CN204826895U - Car key - Google Patents

Abstract

The utility model provides a car key, including the first casing and second casing of PCB board and holding PCB board, first casing has along assembling the seal structure that the direction is overlapped each other with the second casing, is provided with the sealing member between the seal structure to form airtight space. The utility model provides a car key adopts the seal structure who overlaps each other, and the sealing member is to the reaction force of sealing load production to on not acting on the installation direction of first casing and second casing, consequently can not exert an influence to the clearance between first casing and the second casing, guarantee that first casing and second casing block are firm, because sealing member and first casing adopt double -shot moulding integrated into one piece, button and sealing member integrated into one piece have reduced the quantity of car key's part, can reduce the frock like this, have also reduced the expense of equipment simultaneously to reduce car key's manufacturing cost.

Description

a car key

technical field

The utility model relates to the field of automobile manufacturing, in particular to an automobile key.

Background technique

As shown in Figure 1, a car key usually includes a button 1, an upper cover 2, a silicone pad 3, a PCB board 4 and a lower cover 5, the PCB board 4 is installed in the space formed by the upper cover 2 and the lower cover 5, and the silicone pad 3 The edge is pressed between the contact surfaces of the upper cover 2 and the lower cover 5 to prevent water from entering the space formed by the upper cover 2 and the lower cover 5 to protect the PCB board 4 .

This structure has the following problems:

The silicone pad 3 will produce a reaction force against the sealing pressure, acting on the gap between the upper cover 2 and the lower cover 5, making the gap between the upper cover 2 and the lower cover 5 uneven, resulting in a gap between the upper cover 2 and the lower cover 5. The snapping of the parts is not firm, which will easily lead to the failure of the drop test.

Contents of the invention

Aiming at the problems existing in the prior art, the problem to be solved by the utility model is to provide a car key, which adopts overlapping sealing structures, and the reaction force generated by the sealing member to the sealing pressure will not cause the upper cover and the lower cover to engage Not solid.

The utility model provides a car key, which includes a PCB board and a first housing and a second housing for accommodating the PCB board. The first housing and the second housing have a sealing structure overlapping with each other along the assembly direction. There is a seal between them to form a closed space.

Further, the sealing member and the first housing are integrally formed by two-color injection molding.

Further, the car key also includes a key, and the key and the sealing member are integrally formed.

Furthermore, arc-shaped protrusions are provided at the part of the sealing member between the sealing structures, which can achieve a better waterproof effect.

Compared with the prior art, the car key provided by the utility model has the following advantages:

(1) The overlapping sealing structure is adopted, and the reaction force generated by the seal against the sealing pressure does not act on the installation direction of the first shell and the second shell, so it will not affect the first shell and the second shell The gap between the bodies is affected to ensure that the first shell and the second shell are firmly engaged;

(2) Since the seal and the first housing are integrally formed by two-color injection molding, and the button and the seal are integrally formed, the number of parts of the car key is reduced, which can reduce tooling and assembly costs, thereby reducing the cost of the car key. manufacturing cost.

Description of drawings

Fig. 1 is an explosion diagram of a car key in the prior art;

Fig. 2 is the explosion diagram of the car key of an embodiment of the present utility model;

Fig. 3 is a sectional view of the car key shown in Fig. 2;

Fig. 4 is a partially enlarged view of the cross-sectional view of the car key shown in Fig. 3;

Fig. 5 is a schematic diagram of the internal structure of the first housing, the sealing member and the button integrally formed of the car key shown in Fig. 2 .

Detailed ways

As shown in Fig. 2 and Fig. 3, the car key of an embodiment of the present invention includes a PCB board 14, and the space formed by the first housing and the second housing accommodates the PCB board 14. In this embodiment, the first housing The body is an upper cover 12, and the second housing is a lower cover 15.

As shown in FIG. 4 , the upper cover 12 and the lower cover 15 have overlapping sealing structures 121 , 151 along the assembly direction, and a sealing member 13 is provided between the sealing structures 121 , 151 to form a closed space for accommodating the PCB 14 .

With overlapping sealing structures 121, 151, the reaction force generated by the sealing member 13 on the sealing pressure is perpendicular to the sealing structure 121 of the upper cover 12 and the sealing structure 151 of the lower cover 15, and does not act on the upper cover 12 and the lower cover 15. Therefore, the gap between the upper cover 12 and the lower cover 15 will not be affected, so as to ensure that the upper cover 12 and the lower cover 15 are firmly engaged.

In this embodiment, the sealing member 13 and the upper cover 12 are integrally formed by two-color injection molding, wherein the upper cover 12 is made of glass fiber reinforced polyamide, and can also be made of other hard rubber materials, such as engineering plastics; the sealing member 13 is made of thermoplastic polyurethane elastic Body (Thermoplasticpolyurethane, TPU) or silica gel, can also be made of other soft rubber materials, the utility model is not limited to this.

The seal 13 is integrally formed with the upper cover 12, reducing the number of parts of the car key, which can reduce tooling and assembly costs, thereby reducing the manufacturing cost of the car key; in addition, it is embedded with a separate seal 12 Compared with the sealing structure 121 , 151 of the lower cover 15 , the assembly with the lower cover 15 is more convenient.

Certainly, the sealing member 13 may also be a separate sealing member, that is, the sealing member 13 is not integrally formed with the upper cover 12 .

As shown in FIG. 4 , the sealing member 13 is located between the sealing structures 121 and 151 and is provided with an arc-shaped protrusion 131 , which can achieve a better waterproof effect. Of course, the protrusion can also be provided on the sealing structure 151 .

The car key in the prior art, as shown in FIG. 1 , requires at least three sets of tooling for the button 1, the upper cover 2 and the silicone pad 3, and requires assembly costs, resulting in higher manufacturing costs.

In this embodiment, the car key includes a button 11, which is made of soft rubber and integrally formed with a seal 13, as shown in Figure 5, that is, the button 1, the upper cover 2 and the silicone pad of the car key in the prior art 3 are combined into one part, which reduces the parts of the car key and reduces the manufacturing cost of the car key. The key 11 made of soft rubber has good elasticity and can meet the requirements of key operation and operating feel. In addition, the number of parts of the car key is further reduced, and the manufacturing cost of the car key is reduced.

Of course, the button in the prior art can also be used, the button is not integrally formed with the sealing member 13, that is, the upper cover 2 and the silicone pad 3 of the car key in the prior art (as shown in Figure 1) are combined into one part.

In this embodiment, the sealing structure of the upper cover 12 is located outside the sealing structure 151 of the lower cover 15. With such a structure, the upper edge of the sealing structure 151 of the lower cover 15 can be directly used to support the PCB board 14, which simplifies the process of the lower cover 15. Structure.

As shown in FIG. 3 , the upper cover 12 is provided with a buckle structure 122 , and the lower cover 15 is provided with a buckle structure 152 , and the buckle structures 122 and 152 are arranged in pairs. In this embodiment, a total of five pairs of buckle structures 122 , 152 are provided, and the upper cover 12 and the lower cover 15 are locked together through the buckle structures 122 , 152 .

Although the utility model has been disclosed above with preferred embodiments, the utility model is not limited thereto. Any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present utility model should be included in the protection scope of the present utility model, so the protection scope of the present utility model should be defined by the claims range prevails.

Claims (10)

1. A car key, comprising a PCB board and a first housing and a second housing for accommodating the PCB board, characterized in that, the first housing and the second housing have mutual Overlapped sealing structures, seals are arranged between the sealing structures to form a closed space for accommodating the PCB board. 2 . The car key according to claim 1 , wherein the sealing member and the first housing are integrally formed by two-color injection molding. 3 . 3. The car key according to claim 2, wherein the sealing member is made of TPU or silica gel. 4. The car key according to claim 2, wherein the first shell is made of glass fiber reinforced polyamide. 5. The car key according to claim 2, characterized in that, the car key further comprises a key, and the key is integrally formed with the sealing member. 6 . The car key according to claim 1 , wherein an arc-shaped protrusion is provided at a portion of the sealing member between the sealing structures. 6 . 7. The car key according to claim 1, wherein the upper edge of the sealing structure of the second housing supports the PCB board. 8 . The car key according to claim 1 , wherein the first housing and the second housing are engaged together by a buckle structure. 9. The car key according to claim 8, characterized in that there are multiple pairs of said buckle structures. 10. The car key according to claim 1, wherein the first housing is an upper cover, and the second housing is a lower cover.