CN201190710Y - Telescopic tube positioning mechanism - Google Patents

Abstract

The utility model discloses a flexible pipe positioning mechanism, including an outer tube, wear to be equipped with the inner tube in the outer tube, its characterized in that the cross-section of outer tube and inner tube is roughly triangle-shaped, install the sleeve pipe at the tip of outer tube, set up the hole on the sleeve pipe, be provided with the hole that corresponds with the sheathed tube hole on the lateral wall of outer tube, the pin joint has a press panel on the sleeve pipe, the downthehole positioner who matches with the inner tube of installing of outer tube and sleeve pipe, be provided with the roof pressure device on press panel or the sleeve pipe, the roof pressure device can make the positioner keep the situation of location between internal and outer tube; the utility model discloses can make the combination between the interior outer tube very firm, difficult not hard up, and fix a position strength big, therefore can reach fine location effect, the cross-section of interior outer tube roughly is the triangle-shaped form simultaneously to do benefit to the relative stability of the position between the interior outer tube, and be favorable to improving the location strength between the interior outer tube.

Description

Telescopic tube positioning mechanism

technical field

The utility model relates to a positioning mechanism for a telescopic tube.

Background technique

The commonly used positioning mechanism of the telescopic tube includes an outer tube fixing seat installed at one end of the outer tube. A base is pierced on the outer tube fixing seat. The base can rotate on the fixing seat. There is a movement seat, and the movement seat can also rotate when the long rod rotates. There is a convex column on the movement seat, and an eccentric section is arranged at the end of the convex column adjacent to the movement seat. An eccentric block is installed on the eccentric section, and the inner tube is inserted into the outer One end of the tube is provided with an inner tube fixing seat, and the convex column is pierced in the inner tube fixing seat. When the telescopic tube connection positioning mechanism of the above structure rotates the base, the base can drive the long rod to rotate, so that the long rod can synchronously drive the movement seat to rotate, and the eccentric block can be pushed against the inner wall of the outer tube through the deflection of the eccentric section on the movement seat , through the friction generated between the eccentric block and the inner wall to achieve the purpose of positioning the inner and outer tubes. However, the positioning force produced by the connection of the telescopic tube with this structure to the positioning mechanism is insufficient, and it is easy to cause loosening of the positioned inner and outer tubes.

Contents of the invention

In order to overcome the deficiencies of the prior art, the utility model provides a telescopic tube positioning mechanism with large positioning force and good positioning effect.

The technical scheme that the utility model solves its technical problem adopts is:

The telescoping tube positioning mechanism includes an outer tube, and an inner tube is pierced inside the outer tube. hole, the side wall of the outer tube is provided with a hole corresponding to the hole of the sleeve, the sleeve is pivotally connected with a pressing plate, and a positioning device matching the inner tube is installed in the hole of the outer tube and the sleeve, and the pressing plate Or the casing is provided with a pressing device, and the pressing device can keep the positioning device in the position of positioning between the inner and outer pipes.

As a preferred embodiment of the present invention, the inner tube is axially provided with several positioning holes, the positioning device is a positioning pin hinged at one end of the pressing plate, and one end of the positioning pin is inserted into the hole of the outer tube and the casing and can be inserted into the positioning hole on the inner tube; the pressing device is a shrapnel with one end fixed on the sleeve and the other end pressed against the bottom of the pressing plate.

As another preferred embodiment of the present invention, the positioning device is a positioning block installed in the hole of the outer tube and the casing, the positioning block is in contact with the outer wall of the inner tube, and the pressing device is arranged on the pivot of the pressing plate. cam on the end.

As an improvement to the above-mentioned embodiment of the present invention, the inner tube is provided with a limiting block that cooperates with the positioning block.

The beneficial effects of the utility model are: the utility model can make the connection between the inner and outer tubes very firm, not easy to loosen, and has a large positioning force, so that a good positioning effect can be achieved.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a three-dimensional exploded schematic view of the first embodiment of the present utility model;

Fig. 2 is a three-dimensional schematic diagram of Fig. 1 in a loosened state;

Fig. 3 is a schematic perspective view of Fig. 1 in a locked state;

Fig. 4 is a three-dimensional exploded schematic diagram of the second embodiment of the present invention.

Detailed ways

With reference to Fig. 1, Fig. 2, Fig. 3, what Fig. 1, Fig. 2, Fig. 3 show is the first kind of embodiment of the present utility model, the telescoping tube positioning mechanism shown in the figure, comprises an outer tube 1, and 1 in the outer tube The inner tube 2 is pierced, and the cross section of the inner and outer tubes is roughly triangular in order to facilitate the relative stability of the position between the inner and outer tubes. One end of the inner tube 2 is equipped with a tail plug 16, and the other end is equipped with a fixed clamp block 17 for fixing garden tools; one end of the outer tube 1 is provided with a handle 11, and the other end is equipped with a sleeve 3. A hole 12 is provided on the top, and a hole 13 corresponding to the sleeve 3 is provided on the side wall of the outer tube 1. A positioning block 4 is arranged in the two holes, and the positioning block 4 contacts the outer wall of the inner tube 2. Press plate 5 is installed on it.

As shown in the figure, a cam 6 is provided on the pressing plate 5, and the cam 6 is in contact with the positioning block 4. Two opposite projections are provided on both sides of the hole 12 on the sleeve 3, and a shaft is provided on the projection and the cam 6. A shaft 7 is installed in the shaft hole 18 , and the pressing plate 5 is connected with the sleeve pipe 3 through the shaft 7 installed on the cam 6 .

In this way, when the telescopic tube is locked by the positioning mechanism, the positioning block is pressed tightly by the cam on the outer wall of the inner tube, so that the combination between the inner and outer tubes is very firm and not easy to loosen, thus achieving a good positioning effect.

Referring to Fig. 1, a limit hole 19 is arranged on the inner tube 2, and a limit block 8 is installed in the limit hole 19. When the telescopic tube is pulled to a certain position, the limit block 8 is pushed against one side of the position block 4 , thereby preventing the inner tube from being pulled out of the outer tube.

With reference to Fig. 4, Fig. 4 is the structural representation of two kinds of embodiments of the present utility model, and the telescoping tube positioning mechanism as shown in the figure comprises an outer tube 1, and the outer tube 1 is pierced with an inner tube 2, wherein the outer tube 1 and The section of the inner tube 2 is roughly triangular in shape, and one end of the inner tube 2 is provided with a fixed clip 17 for fixing garden tools; one end of the outer tube 1 is provided with a handle 11, and the other end is provided with a sleeve 3, which is provided with a There are holes 12, the side wall of the outer tube 1 is provided with a hole 13 corresponding to the hole of the sleeve, the inner tube 2 is axially provided with a number of positioning holes 9, and the sleeve 3 is pivotally connected with a pressing plate through a pivot 10 5. One end of the pressing plate 5 is hinged with a positioning pin 14, and one end of the positioning pin 14 is inserted into the holes of the outer tube 1 and the casing 3 and can be inserted into the positioning hole 9 on the inner tube.

A shrapnel 15 is fixed on the sleeve pipe 3, and one end of the shrapnel 15 presses against the bottom of the pressing plate 5, and the shrapnel 15 can keep the positioning pin in a position between the inner and outer pipes. When the pressing plate is pressed down, the shrapnel is compressed and deformed, the pressing plate rotates, and at the same time, the positioning pin is separated from the positioning hole on the inner tube. At this time, the outer tube can be pulled to adjust the length of the telescopic tube. When the outer tube is pulled to When the positioning pin corresponds to another positioning hole on the inner tube at a certain position, the pressing plate is released, and the shrapnel returns to its original shape. At this time, the pressing plate resets under the action of the shrapnel, and the positioning pin is inserted into the positioning hole, thereby completing Adjust the length of the telescopic tube.

The above descriptions are only preferred embodiments of the present utility model, and the protection scope of the present utility model cannot be limited by them. As long as the equivalent changes and modifications are made according to the protection scope of the present utility model, all should still fall within the scope covered by the present utility model.

Claims (4)

1. Telescopic tube positioning mechanism, comprising an outer tube, the outer tube is pierced with an inner tube, it is characterized in that the cross-section of the outer tube and the inner tube is roughly triangular, and a sleeve is installed at the end of the outer tube, and the sleeve is Holes are provided, the side wall of the outer tube is provided with holes corresponding to the holes of the sleeve, a pressing plate is pivotally connected to the sleeve, and a positioning device matching the inner tube is installed in the holes of the outer tube and the sleeve, A pressing device is arranged on the pressing plate or the sleeve pipe, and the pressing device can keep the positioning device in a state of positioning between the inner and outer pipes. 2. The telescopic tube positioning mechanism according to claim 1, characterized in that several positioning holes are arranged axially on the inner tube, the positioning device is a positioning pin hinged on one end of the pressing plate, and one end of the positioning pin is inserted outside The hole of the tube and the sleeve can be inserted into the positioning hole on the inner tube; the pressing device is a shrapnel with one end fixed on the sleeve and the other end pressed against the bottom of the pressing plate. 3. The telescopic tube positioning mechanism according to claim 1, wherein the positioning device is a positioning block installed in the holes of the outer tube and the casing, the positioning block is in contact with the outer wall of the inner tube, and the pressing device is A cam arranged at the pivotal end of the pressing plate. 4. The telescopic tube positioning mechanism according to claim 3, characterized in that the inner tube is provided with a limit block that cooperates with the positioning block.

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