WO2012116622A1 - Child car chair - Google Patents

Abstract

Disclosed is a child car chair, which comprises a seat, and a back arranged at the rear of the seat, with the seat comprising a seat body (1), two armrests (2) rotatably connected to the right and left sides of the seat body (1) respectively, and an armrest locking mechanism having a locked position and an unlocked position for locking the armrest (2) at each side respectively in a position relative to the seat body (1), with the lower part of the back being rotatably connected to the rear part of the seat, between the lower part of the back and the rear part of the seat there being provided a back locking mechanism having a locked position and an unlocked position for locking the back in position, and the back comprising a back body (3), two side wings (4) rotatably connected to the right and left sides of the back body (3) respectively, and a wing locking mechanism having a locked position and an unlocked position for locking the side wing (4) at each side respectively in a position relative to the back body (3). The child car chair also comprises a head support, which head support includes a head support body (5) arranged on the back body (3) so as to be slidable along the back body (3) in an up and down direction, two protecting supports (6) rotatably connected to the right and left sides respectively of the head support body (5) at the inside, and a protecting support locking mechanism having a locked position and an unlocked position for locking the protecting support (6) at each side respectively in a position relative to the head support body(5), between the head support body (5) and the back body (3) there being provided an elevation adjusting mechanism having a locked position and an unlocked position for the position to be locked therebetween; when the head support body (5) is slid to the lowest position, the armrest locking mechanism, the back locking mechanism, the side wing locking mechanism and the protecting support locking mechanism are all switched from the locked position to the unlocked position.

Description

 Child car seat

 Technical field

 The invention relates to a child car seat.

 Background technique

Prior art child car seats typically include a seat at the lower portion and a backrest disposed at the rear of the seat. The seat includes a seat body, left and right armrests respectively rotatably coupled to the left and right side portions of the seat body, and an armrest locking mechanism for locking the left and right armrests respectively with respect to the position of the seat body. The lower portion of the backrest is rotatably coupled to the rear of the seat, and the backrest is locked to the seat by a backrest locking mechanism. The backrest includes a backrest body, left and right wings rotatably coupled to the left and right side portions of the backrest body, and a side wing locking mechanism for locking the left and right wings, respectively, relative to the position of the backrest body. Before folding the child's car seat, the armrest locking mechanism, the backrest locking mechanism, and the side wing locking mechanism are separately unlocked, and then the components are rotated.

 Summary of the invention

 The technical problem to be solved by the present invention is to provide a child car seat that can quickly release the lock between the components.

In order to solve the above technical problem, the present invention provides a child car seat including a seat, a backrest disposed at a rear portion of the seat, the seat including a seat body, and two armrests rotatably coupled to left and right sides of the seat body, respectively, for Locking the armrest locking mechanism of each side of the armrest with respect to the position of the seat body, respectively, having a locking position and an unlocking position, the lower portion of the backrest being rotatably coupled to the rear of the seat, and the lower portion of the backrest and the rear of the seat are provided for locking the backrest a backrest locking mechanism having a locked position and an unlocked position, the backrest including a backrest body, two side flaps respectively rotatably coupled to left and right sides of the backrest body, and locking for locking the side flaps of each side with respect to the position of the backrest body A wing locking mechanism with a position and an unlocked position. The child car seat further includes a head rest including a head rest body slidably disposed on the backrest body along an up-and-down direction of the backrest body, and two inner side portions rotatably coupled to the left and right sides of the head rest body a retaining bracket, a retaining locking mechanism for locking the position of the retaining bracket on each side with respect to the position of the headrest body, respectively, having a locking position and an unlocking position, wherein the headrest body and the backrest body are provided with a lock for locking the position therebetween The lifting adjustment mechanism of the locking position and the unlocking position, when the headrest body slides down to the lowest position, the armrest locking mechanism, the backrest locking mechanism, the side wing locking mechanism, and the retaining lock mechanism are all switched from the locked position to the unlocked position.

 In certain embodiments, The headrest body has a locking piece, and one end of the locking piece is fixedly connected with the headrest body, and the lifting and lowering adjustment mechanism comprises a positioning protrusion on the locking piece and a plurality of positioning recesses distributed on the backrest body in the up and down direction. When the head support body moves with the positioning protrusion to make the positioning protrusion face the positioning recess, the positioning protrusion is inserted into the positioning recess, so that the lifting adjustment mechanism enters a locking position for locking the head rest body relative to the backrest body, and the locking piece can be carried. The positioning projections are separated from the positioning recesses, causing the lifting adjustment mechanism to enter an unlocked position in which the headrest body is released.

As an alternative embodiment, the lifting and lowering adjustment mechanism may further include a positioning recess formed on the locking piece and a plurality of positioning protrusions distributed on the backrest body along the up and down direction, and the positioning protrusion is inserted into the positioning recess to make The headstock body is positioned relative to the backrest body.

In some further embodiments, the headrest body is slidably disposed in the up and down direction with an operating handle. When the lifting and lowering mechanism is in the locked position, the operating handle is pressed against the locking piece. When the lifting and lowering mechanism is in the unlocked position, the operating handle is operated. Disengaged from the locking piece, a lifting adjustment elastic member that allows the lifting adjustment mechanism to be stably in the locked position is disposed between the operating handle and the headrest body.

In some embodiments, the backrest locking mechanism includes a backrest locking slider that is slidably disposed only in a rearward direction of the seat, and a backrest locking groove that is formed on the backrest body, and the backrest locking slider has an upwardly protruding The backrest locking protrusion has a locking position and an unlocking position. When the backrest locking mechanism is in the locking position, the backrest locking protrusion is inserted in the backrest locking groove, and when the backrest locking mechanism is in the unlocked position, the backrest locking protrusion is The backrest locking groove is disengaged, and a backrest locking elastic member is provided between the backrest locking projection and the seat such that the backrest locking mechanism is stably in the locked position.

 In certain further embodiments, the lower portion of the backrest body has a backrest guide surface that facilitates entry of the backrest locking projection into the backrest locking slot.

 In some yet further embodiments, The armrest locking mechanism includes an armrest locking slider slidably disposed on the seat only along a trajectory extending in the front-rear direction, and the axis of rotation of the armrest relative to the seat body is parallel or coincident with the sliding trajectory of the armrest locking slider relative to the seat, An armrest lock slot is provided on one of the armrest locking slider and the armrest, and the other of the armrest locking member and the armrest is provided with an armrest lock portion, and the armrest locking mechanism has a locking position and an unlocking position, and the armrest locking mechanism In the locked position, the armrest lock portion is inserted into the armrest lock slot. When the armrest lock mechanism is in the unlocked position, the armrest lock portion is disengaged from the armrest lock slot, and an armrest lock slider is provided between the armrest lock slider and the seat. a force-locking elastic member for stably inserting the armrest portion into the armrest lock groove, and the rear portion of the armrest slider has a function of being able to interfere with the downwardly sliding backrest lock slider so that the armrest lock slider slides forward The armrest locks the slider guide ramp.

 In certain embodiments, the side flap locking mechanism includes along a flank locking slider slidably disposed on the backrest body, the flank of the flank is parallel or coincident with the sliding trajectory of the flank locking slider relative to the backrest body, and the flank locking slider is One of the two side flaps is provided with a side wing lock slot, and the other of the two side flap locking sliders and the side flaps is provided with a side wing lock mechanism, the side wing locking mechanism has a locking position and an unlocking position, when the side wing locking mechanism is in the locked position The side wing lock portion is inserted into the side wing lock groove. When the side wing lock mechanism is in the unlocked position, the side wing lock portion is disengaged from the side wing lock groove, and the side wing lock slider and the back body are provided with a force for the side wing lock slider to The side wing locking elastic member is stably inserted into the side wing lock groove, and the head support body is pressed against the side wing locking slider when the head support body slides down to the extreme position.

 In certain further embodiments, the side flaps have side guide surfaces that facilitate access of the side locks into the side lock slots.

 In certain embodiments, the guard locking mechanism includes along a guard locking slider slidably disposed on the head support body, wherein the rotation axis of the guard relative to the head rest body is parallel or coincident with the sliding trajectory of the guard lock slider relative to the head support body a guard lock slot is opened on one of the guard lock slider and the guard, and the other one of the guard lock slider and the guard is provided with a retainer lock portion, and the guard lock mechanism has a lock Position and unlocking position, when the retaining lock mechanism is in the locked position, the retaining lock portion is inserted in the retaining lock slot, and when the retaining locking mechanism is in the unlocked position, the retaining lock portion is separated from the retaining lock slot, A guard locking elastic member is provided between the bracket locking slider and the backrest body to provide a force for the retaining bracket locking slider to stably insert the retaining latch portion into the retaining lock slot, and the head bracket body slides down to the lowest position. The guard lock slider is hung on the backrest body.

 In certain further embodiments, the retaining guard has a retaining guide surface that facilitates insertion of the retaining lock into the retaining lock slot.

The scope of the present invention is not limited to the specific combination of the above technical features, and other technical solutions formed by any combination of the above technical features or equivalent features thereof are also contemplated. For example, the above features are combined with the technical features disclosed in the present application, but are not limited to the technical features having similar functions, and the like.

Due to the application of the above technical solution, the present invention has the following advantages over the prior art: the armrest locking mechanism, the backrest locking mechanism, the side wing locking mechanism, and the retaining lock mechanism are excited by sliding the head support body to the lowest position, so that the foregoing The locking mechanism is switched from the locked position to the unlocked position, and the components can be relatively rotated between each other, so that the folding operation of the child car seat is more convenient and quick.

 DRAWINGS

 Figure 1 is a perspective view of the present invention (the child's car seat is in the use position);

 Figure 2 is a perspective view 2 of the present invention (the child car seat is in the use position);

 Figure 3 is a perspective view of the present invention (the child car seat is in the process of switching from the use position to the stowed position);

 Figure 4 is a perspective view of the present invention (the child car seat is in the stowed position);

 Figure 5 is a cross-sectional view 1 of the lifting adjustment mechanism;

 Figure 6 is a cross-sectional view 2 of the lifting adjustment mechanism;

 Figure 7 is a cross-sectional view 3 of the lifting adjustment mechanism;

 Figure 8 is an enlarged view of A of Figure 5;

 Figure 9 is a front view of the present invention (omitted part of the backrest body, part of the seat body);

 Figure 10 is a front view 2 of the present invention (a part of the backrest body, part of the seat body is omitted);

 Figure 11 is a front view three of the present invention (a part of the backrest body is omitted);

 Figure 12 is a front view of the present invention (the partial backrest body, part of the headstock body is omitted);

 Figure 13 is a front view view of the present invention (omitted part of the backrest body, part of the headstock body, seat body);

 Figure 14 is a front view view of the present invention (omitted part of the head support body, seat body);

 Figure 15 is a front view view of the present invention (omitted part of the backrest body, part of the headstock body, seat body);

 Figure 16 is a front view view of the present invention (omitted part of the head support body, seat body);

 Figure 17 is a cross-sectional view 4 of the lifting adjustment mechanism;

 Figure 18 is a cross-sectional view 1 of the present invention;

 Figure 19 is a cross-sectional view 5 of the lifting adjustment mechanism;

 Figure 20 is a cross-sectional view 2 of the present invention;

 Figure 21 is a perspective view of the present invention (a part of the backrest body, part of the seat body is omitted);

 Figure 22 is an enlarged view of B of Figure 21;

 Figure 23 is a schematic view of a side wing locking mechanism;

 Figure 24 is a view of the retaining lock slider member;

 Figure 25 is a view of the wing locking slider member;

 Figure 26 is a schematic view showing the connection of the backrest locking slider and the armrest locking slider.

 Among them: 1, seat body; 2, handrails; 3, backrest body; 4, side wings; 5, head support body; 6, support; , locking piece; 8 , positioning protrusion; 9, positioning recess; 10, operating handle; 11 , lifting and adjusting elastic parts; 12, back lock sliding parts; 14 , handrail locking slider; , the armrest locks the elastic member; 16 , the side wing locking slider; 17 , the side wing locking elastic member; 18 , the retaining lock sliding member; 19 , the retaining bracket locking elastic member; 20 , the abutting portion; 21 , the wing guiding surface; 22, side wing lock slot; 23, armrest lock slot; 24, backrest guide surface; 25, armrest lock slider guide slope.

 detailed description

 As shown in the various figures, a child car seat having a use position and a stowed position includes a seat and a backrest disposed at the rear of the seat. Seat including seat body 1 The inner side portion is rotatably connected to the two handrails 2 on the left and right sides of the seat body 1, and the armrests 2 for locking each side are respectively opposite to the seat body 1 a handrail locking mechanism having a locked position and an unlocked position, the lower portion of the backrest being rotatably coupled to the rear of the seat, and a locking position and an unlocking position for locking the backrest position between the lower portion of the backrest and the rear portion of the seat Backrest locking mechanism, backrest including backrest body 3, the inner side portion is rotatably connected to the two side flaps 4 on the left and right sides of the backrest body 3, and the side flaps 4 for locking each side are respectively opposite to the backrest body 3 A wing locking mechanism having a locked position and an unlocked position.

 As shown in Figure 1 - Figure 4 and Figure 9 - Figure 12, the child car seat also includes a headrest that includes the backrest body 3 The headrest body 5 slidably disposed on the backrest body 3 in the up-and-down direction, and the two guards 6 rotatably connected to the left and right sides of the headrest body 5, respectively, for locking the guards on each side 6 a tray locking mechanism having a locking position and an unlocking position relative to the head holder body 5, the headrest body 5 and the backrest body 3 There is provided a lifting adjustment mechanism having a locking position and an unlocking position for locking the position between the two,

 When the lifting adjustment mechanism is in the unlocked position, the headrest body 5 When sliding down to the extreme position, the armrest locking mechanism, the backrest locking mechanism, the side flap locking mechanism, and the retaining lock mechanism are all switched from the locked position to the unlocked position.

 As shown in Figure 5 - Figure 8, Figure 17, and Figure 19, the headstock body 5 has an end portion and a headrest body 5 The locking piece 7 fixedly connected, the lifting adjustment mechanism comprises a positioning protrusion 8 and a positioning recess 9 having a plurality of positioning recesses 9 distributed on the backrest body 3 in the up and down direction, the positioning protrusion 8 Provided on the locking piece 7, the headrest body 5 is slidably disposed in the up and down direction with an operating handle 10, and when the lifting and lowering adjustment mechanism is in the locked position, the corresponding positioning protrusion 8 is inserted in the corresponding positioning recess 9 The operating handle 10 is pressed against the locking piece 7, and when the lifting adjustment mechanism is in the unlocked position, the operating handle 10 is disengaged from the locking piece 7, as shown in Fig. 12 and Fig. 19, the operating handle 10 An elevating adjustment elastic member 11 is provided between the head main body 5 and the elevating adjustment mechanism stably in the locked position.

 Figure 21, Figure 22, Figure 26 As shown, the backrest locking mechanism includes a backrest locking slider 12 that is slidably disposed only in the up and down direction of the seat, and an open backrest locking groove that is opened on the backrest body 3, the backrest locking slider 12 The backrest locking protrusion has an upwardly protruding backrest locking mechanism, and the backrest locking mechanism has a locking position and an unlocking position. When the backrest locking mechanism is in the locked position, the backrest locking protrusion is inserted in the backrest locking groove, and when the backrest locking mechanism is in the unlocked position, The backrest locking protrusion is separated from the backrest locking groove, and the backrest body 3 can be relative to the seat body 1 Rotate forward. Not shown, a backrest locking elastic member is provided between the backrest locking projection and the seat such that the backrest locking mechanism is stably in the locked position, and the backrest locking elastic member causes the backrest locking slider 12 Has a tendency to move up. As shown in Fig. 26, the lower portion of the backrest body 3 has a backrest guide surface 24 for facilitating the backrest locking projection into the backrest locking groove.

 Figure 9, Figure 10, Figure 21, Figure 22, Figure 26 As shown, the armrest locking mechanism includes an armrest locking slider 14 slidably disposed on the seat only along a trajectory extending in the front-rear direction, the axis of rotation of the armrest 2 relative to the seat and the armrest locking slider 14 The sliding rails of the opposite seats are parallel or coincident, and the armrest locking slider 14 is provided with an armrest lock slot 23, and the armrest 2 An armrest lock portion is disposed on the armrest locking mechanism, and the armrest lock mechanism has a locking position and an unlocking position. When the armrest locking mechanism is in the locked position, the armrest lock portion is inserted into the armrest lock slot. Inside, when the armrest locking mechanism is in the unlocked position, the armrest lock portion is disengaged from the armrest lock groove 23, and the armrest lock elastic member is disposed between the armrest lock slider 14 and the seat such that the armrest lock mechanism is stably in the locked position. 15 , as shown in Fig. 26, the rear portion of the armrest slider has an armrest locking slider guiding ramp which is capable of resisting the downwardly sliding backrest locking slider 12 so that the armrest locking slider 14 slides forward. . During the downward sliding of the backrest locking slider 12, under the action of the armrest locking slider guiding ramp 25, the armrest locking slider 14 is slid forward, so that the armrest lock portion and the armrest lock groove 23 When the phase is disengaged, the armrest 2 can be rotated relative to the seat body 1 to both sides.

 Figure 5 - Figure 7 , Figure 11 , Figure 12 , Figure 17 - Figure 20 , Figure 23 , Figure 25 As shown, the side wing locking mechanism includes a side wing locking slide 16 slidably disposed on the backrest body 3 along a trajectory extending in the up and down direction, the side wing 4 being opposite the axis of rotation of the backrest body 3 and the side wing locking slide 16 The sliding rails of the backrest body 3 are parallel or coincident, and the side flap locking sliders 16 are provided with wing locking grooves 22 and side flaps 4 A side flap locking portion is provided, the side wing locking mechanism has a locking position and an unlocking position, and when the side wing locking mechanism is in the locking position, the side wing locking portion is inserted into the side wing locking groove 22 When the side flap locking mechanism is in the unlocked position, the side flap lock portion is disengaged from the side flap lock groove 22, and at this time, the two side flaps 4 are rotatable relative to both sides of the backrest body 3. Flank locking slide 16 and backrest body 3 There is disposed a side flap locking elastic member 17 that causes the side flap locking mechanism to be stably in the locked position, and the head rest body 5 is pressed against the side flap locking slider 16 when the head rest body 5 is slid down to the extreme position. Up, thereby causing the side flap locking mechanism to transition from the locked position to the unlocked position. The side flap locking elastic member 17 causes the side flap locking slider 16 to have a tendency to slide upwardly and reset. Figure 18, Figure 20, and Figure 23, as shown in Fig. 25, the side flap locking slider 16 has an abutting portion 20, and when the headrest body 5 slides down to the extreme position, the headrest body 5 is pressed against the abutting portion 20. As shown in Figure 23 As shown, the side flaps 4 have side guide surfaces 21 that facilitate the entry of the side locks into the side lock grooves 22. When the child car seat is to be switched from the stowed position to the use position, the side flap locks the elastic member at this time. The flank locking slider 16 has been reset so that the user directly rotates the corresponding flank 4 and presses the flank locking slider 16 downwardly under the action of the flank guiding surface 21, thereby facilitating the flank locking portion to enter the flank locking slot 22 inside.

 Figure 13 - Figure 16 and Figure 24 As shown, the retaining lock mechanism includes a retaining lock slide 18 slidably disposed on the headrest body 5 along a trajectory extending in the up and down direction, the guard 6 is locked relative to the axis of rotation of the headstock body 5 and the retainer Slide 18 The sliding rails of the head bracket body 5 are parallel or coincident, and the retaining lock slider 18 is provided with a retaining lock groove, and the retaining bracket 6 Provided with a retaining lock portion, the retaining lock mechanism has a locking position and an unlocking position. When the retaining locking mechanism is in the locked position, the retaining lock portion is inserted in the retaining lock slot, and when the retaining locking mechanism is in the unlocked position, The retaining lock portion is separated from the retaining lock groove, and the retaining lock sliding member 18 is provided between the backrest body 3 and the retaining lock elastic member 19 for stably holding the retaining lock mechanism in the locked position, as shown in Fig. 20, when the headrest body 5 When the slide down to the extreme position, the guard lock slider 18 is hung on the backrest body 3, thereby supporting the lock slider 18 and the head rest body 5 When the displacement occurs, the retaining lock mechanism is switched from the locked position to the unlocked position, and at this time, the two guards 6 are rotatable relative to both sides of the headstock body 5. Support 6 The utility model has a protective guide surface for facilitating the protection of the lock portion into the protection lock groove. When the child car seat is to be switched from the stowed position to the use position, the guard locking elastic member 19 has now locked the retaining lock member 18 The nut is lowered downward, so that the user directly rotates the corresponding guard 6 to press the guard lock slider 18 upward under the action of the guard guide surface, thereby facilitating the protection lock portion to enter the retainer lock groove.

 The folding operation of the child car seat is as follows: First, the head support body 5 is slid down to the lowest position so that the guard locks the slider 18 Pressed on the backrest body 3, at which time the retaining lock portion is disengaged from the retaining lock slot, and the retaining lock mechanism is unlocked; at the same time, other components of the headrest body 5 continue to move downward, and the headrest body 5 is pressed against the abutting portion 20 Upper side, the side flap locking slider 16 is displaced downward so that the side flap lock is disengaged from the side flap lock groove 22, and the side flap locking mechanism is unlocked; at the same time, the lower end portion of the head rest body 5 is pressed against the backrest lock slider 12 Upper, the backrest locking slider 12 is slid downward to be displaced, so that the backrest locking projection is disengaged from the backrest locking groove, the backrest locking mechanism is unlocked, and the backrest body 3 can be rotated forward; at the same time, the backrest locking slider 12 While sliding, the armrest locking slider 14 is driven to slide forward, so that the armrest lock portion is disengaged from the armrest lock groove 23, the armrest locking mechanism is unlocked, and the backrest body 3 is forwarded, so that the child car seat enters as shown in the drawing. 4 The stowed position shown.

The above mentioned upper, lower, left, and right orientation words are defined according to the user's habits when the child's car seat is in the use position, and the position of the seat in the child's car seat is the lower part, and the backrest is located in the seat. Above, when the child sits in the child's car seat and faces forward, the left hand side of the child is the left side of the child's car seat, and the child's right hand side is the right side of the child car seat.

The above embodiments are merely illustrative of the technical concept and the features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the present invention and to implement the present invention, and the scope of the present invention is not limited thereto. Equivalent variations or modifications made in accordance with the spirit of the invention are intended to be included within the scope of the invention.

Claims (10)

1. A children's car seat, including: a seat, the seat includes a seat body (1), and two inner arm portions are rotatably coupled to the left and right sides of the seat body (1) (2) An armrest locking mechanism having a locking position for locking the armrests (2) on each side with respect to the seat body (1) and an unlocking position of the release armrest (2), a backrest, the lower portion of the backrest is rotatably coupled to the rear of the seat, and the backrest includes a backrest body (3), respectively located on the backrest body (3) ) two side flaps ( 4 ) pivotally connected to the left and right sides and to the backrest body ( 3 ), for locking the side flaps of each side with respect to the backrest body ( 3 ) a flank rotation locking mechanism having a locked position and an unlocked position; a backrest locking mechanism having a locking position for locking the backrest relative to the seat and an unlocking position for releasing the backrest; The head rest includes a head rest body (5) slidably disposed on the backrest body (3) along an up-and-down direction of the backrest body (3) And two guards (6) rotatably connected to the left and right sides of the headstock body (5), respectively, for protecting the guards (6) of each side of the headstock body (5) Locking mechanism, head support body (5 Positioning relative to the backrest body (3) by a lifting adjustment mechanism, the headrest body (5) can be opposite to the backrest body (3) The sliding down to the lowest position causes the armrest locking mechanism, the backrest locking mechanism, the side wing locking mechanism, and the guard locking mechanism to be switched from the locked position to the unlocked position. 2. A children's car according to claim 1, wherein the headrest body (5) has a locking piece (7) thereon, the locking piece (7) One end portion is fixedly connected to the head support body (5), and the lifting adjustment mechanism includes a positioning protrusion (8) on the locking piece (7) and a plurality of positioning positions on the backrest body (3) along the up and down direction Depression 9), the head support body (5) is moved with the locking piece (7) to position the positioning protrusion (8) opposite the positioning recess (9), and the positioning protrusion (8) is inserted into the positioning recess (9) The lifting adjustment mechanism is brought into a locking position for locking the headrest body (5) with respect to the backrest body (3), and the locking piece (7) is separated from the positioning recess by the positioning projection (8) (9) The hourly adjustment mechanism enters an unlocked position in which the headstock body (5) is released. 3. The child car seat according to claim 2, wherein an operating handle (10) is slidably disposed in the headstock body in the up and down direction (5) The operating handle (10) is pressed against the locking piece (7) to provide a pressure to the locking piece (7) to stably insert the positioning protrusion (8) when the lifting adjustment mechanism is in the locked position. Positioning depression 9), when the lifting adjustment mechanism is in the unlocked position, the operating handle (10) leaves the locking piece (7), and an operating handle is disposed between the operating handle (10) and the headrest body (5) (10) Providing a force lifting adjustment elastic member (11). 4. The child car seat according to claim 1, wherein the backrest locking mechanism includes a backrest locking slider that is slidably disposed only at a rear portion of the seat in the up and down direction ( 12) a backrest locking groove formed on the backrest body (3), the backrest locking slider (12) ) having an upwardly protruding backrest locking projection, the backrest locking projection being inserted into the backrest locking groove when the backrest locking mechanism is in the locked position, and the backrest locking projection and the backrest locking groove when the backrest locking mechanism is in the unlocked position The detachment, the backrest locking projection and the seat are provided with a backrest locking elastic member that provides a force for the backrest locking projection to be stably inserted in the backrest locking groove. 5. The child car seat according to claim 4, wherein the backrest body (3 The lower portion has a backrest guiding surface (24) for guiding the backrest locking projection into the backrest locking groove. 6. According to claim 4 The child car seat, wherein the armrest locking mechanism comprises an armrest locking slider (14) slidably disposed on the seat only along a trajectory extending in the front-rear direction, the armrest (2) opposite the seat body (1) The axis of rotation is parallel or coincident with the sliding rail of the armrest locking slider (14) relative to the seat, and one of the armrest locking slider (14) and the armrest (2) is provided with a handrail locking slot (23) The other is provided with an armrest lock portion. When the armrest locking mechanism is in the locked position, the armrest lock portion is inserted into the armrest lock groove (23), and when the armrest lock mechanism is in the unlocked position, the armrest lock portion and the armrest lock groove ( twenty three The phase is disengaged, and the armrest locking slider (14) and the seat are provided with an armrest locking elastic member that provides a force for the armrest locking slider (14) to stably insert the armrest portion into the armrest lock groove (23). (15 The rear portion of the armrest locking slider (14) has a guide bevel for sliding forwardly with the downwardly sliding backrest locking slider (12) (25) ). 7. The child car seat according to claim 1, wherein the side wing locking mechanism comprises a slidably disposed on the backrest body along a trajectory extending in the up and down direction (3) The upper wing locking slider (16), the side wing (4) is parallel or coincident with the sliding axis of the side locking sliding member (16) relative to the backrest body (3) with respect to the axis of rotation of the backrest body, and the side flap locking slider ( 16) a wing lock groove (22) is provided on one of the two side flaps (4), and a side wing lock portion is disposed on the other side. When the side wing lock mechanism is in the locked position, the side wing lock portion is inserted into the side wing lock groove ( twenty two The side lock portion is disengaged from the side lock slot (22) when the side flap locking mechanism is in the unlocked position, and a side flap locking slider is disposed between the side flap locking slider (16) and the backrest body (3). Providing a force to cause the side flap lock to be stably inserted into the side flap locking elastic member (17) in the side lock groove (22), and when the head rest body (5) slides down to the lowest position, the head rest body (5) ) pressed against the side flap locking slider ( 16 ). 8. A child car seat according to claim 7, wherein the side wings (4) have side guide faces for guiding the side wing locks into the side wing lock grooves (22) ( twenty one ). 9. The child car seat according to claim 1, wherein the guard lock mechanism comprises a slidably disposed on the head rest body along a trajectory extending in the up and down direction (5) a retaining lock slider (18), the rotation axis of the guard (6) relative to the head support body (5) and the guard lock slider (18) opposite the head support body (5) ) The sliding trajectories are parallel or coincident, and the guard locks the slider (18) and the guard (6) One of the two is provided with a retaining lock groove, and the other is provided with a retaining lock portion. When the retaining locking mechanism is in the locked position, the retaining lock portion is inserted in the retaining lock groove, and the retaining lock is locked. The mechanism is in the unlocked position, the guard lock is separated from the retaining lock slot, and the retaining lock is locked ( 18) Between the backrest body (3), a retaining lock elastic member (19) for providing a force to the retaining lock sliding member (18) for stably inserting the retaining lock portion in the retaining lock groove is provided. Support body (5 When the slide down to the lowest position, the guard lock slider (18) is hung on the backrest body (3). 10. Children's car seat according to claim 9, wherein the care support (6 There is a retaining guide surface for guiding the retaining lock portion into the retaining lock groove.

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