CN219457401U

CN219457401U - Waterproof key structure in remote controller

Info

Publication number: CN219457401U
Application number: CN202223289899.2U
Authority: CN
Inventors: 崔焕朋; 秦文彬; 陈建斌; 卓瑞超; 许磊; 徐琳; 迟硕; 吴永强; 虞磊; 滕修建; 姚山建; 张家鸣
Original assignee: Huaxia Tianxin Intelligent Internet Of Things Co ltd
Current assignee: Huaxia Tianxin Intelligent Internet Of Things Co ltd
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2023-08-01
Anticipated expiration: 2032-12-08

Abstract

The utility model provides a waterproof key structure in a remote controller, which comprises a shell main body and a control circuit board arranged in the shell main body, wherein a switch is arranged on the control circuit board; the shell main body is provided with a mounting hole, a key cap is arranged in the mounting hole, a touch column extending towards the control circuit board is arranged in the key cap, a sleeve is sleeved on the touch column, and the hardness of the sleeve is greater than that of the touch column and the key cap; the key cap is provided with a first sealing ring and a second sealing ring which are arranged at intervals, the position of the first sealing ring is close to one side of the control circuit board, and the outer diameter of the first sealing ring is larger than that of the second sealing ring; the button cap is provided with a cap edge structure which is tightly pressed between the shell main body and the control circuit board; the key cap and the shell main body are provided with a double-layer sealing structure, and the key cap is suitable for the condition that no key is blocked in the mine dust environment.

Description

Waterproof key structure in remote controller

Technical Field

The utility model relates to the field of remote controller key structures, in particular to a waterproof key structure in a remote controller.

Background

The remote controller used in the underground coal mine environment needs to have good dustproof and waterproof effects, and keys can be easily touched under the condition that operators wear thicker gloves; therefore, the key cap and the push switch are mainly push switch keys adopted in the current environment, for example, chinese patent CN101882521B discloses a key cap and a push switch, the publication date is 20141015, and the key cap is specifically described as comprising a cap body provided with a push end, a sealing convex edge annularly arranged in the middle of the peripheral surface of the cap body, and a key column arranged in the cap body and connected with the push end of the cap body. The push switch comprises a shell, a key arranged in the shell and a key cap penetrating through the shell, wherein the key cap comprises a cap body penetrating through the shell, a sealing convex edge arranged in the middle of the peripheral surface of the cap body in a surrounding mode and a key column arranged in the cap body and connected with the cap body, and the key column is abutted with the key when the key cap is pressed. The sealing convex edge can be tightly attached to the surface of the corresponding part (shell) of the switch by adopting the pressing plate, so that the button cap can better seal the switch.

The above-mentioned chinese patent discloses a key cap structure and a pressing plate structure is provided at the edge of the key cap, which is attached to the surface of the switch housing by pressing the pressing plate structure after being mounted in the switch, and the internal switch is touched by the key column; although the corresponding key cap, key column and pressing plate structure are disclosed, the remote controller is in dust after being particularly applied to underground coal mines, the key cap and the remote controller shell main body should have a good sealing structure and ensure that the key cap can have good touch performance so as to ensure that the key cap is suitable for the mine dust environment without blocking keys under the condition of realizing good dust and water resistance.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model provides a waterproof key structure in a remote controller, which is suitable for the condition that a double-layer sealing structure is arranged between a key cap and a shell main body and is not blocked in the mine dust environment.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a waterproof key structure in a remote controller comprises a shell main body and a control circuit board arranged in the shell main body, wherein a switch is arranged on the control circuit board;

the shell main body is provided with a mounting hole, a key cap is arranged in the mounting hole, a touch column extending towards the control circuit board is arranged in the key cap, a sleeve is sleeved on the touch column, and the hardness of the sleeve is greater than that of the touch column and the key cap;

the key cap is provided with a first sealing ring and a second sealing ring which are arranged at intervals, the position of the first sealing ring is close to one side of the control circuit board, and the outer diameter of the first sealing ring is larger than that of the second sealing ring;

the button cap is provided with a cap edge structure which is tightly pressed between the shell main body and the control circuit board.

Preferably, the length of the sleeve is greater than 2/3 of the length of the trigger post.

Preferably, the key cap, the cap edge structure, the touch column, the first sealing ring and the second sealing ring are integrally injection molded key bodies.

Preferably, one end of the sleeve abuts against one side of the trigger post near the key cap, or one end of the sleeve is aligned with the end of the trigger post.

Preferably, the key body is made of silicone rubber, and the sleeve is made of nylon pipe.

Preferably, the shore hardness of the key body is between 40 and 50.

Preferably, the top of the key cap is spaced from the opening edge of the mounting hole.

Preferably, the top surface of the key cap is provided with an indication mark.

Preferably, the sleeve and the touch post are in interference fit.

Preferably, the switch is a dome sheet with elasticity.

Compared with the prior art, the utility model has the following beneficial effects:

the first sealing ring and the second sealing ring are arranged on the key cap and are matched with the mounting hole of the shell main body to form double-layer sealing, and the outer diameter of the first sealing ring is larger than that of the second sealing ring, so that the first sealing ring can be guaranteed to have a good dustproof and waterproof state after the key cap is pressed down, and the second sealing ring can keep dustproof sealing under the condition that the key cap is not pressed down;

meanwhile, a sleeve is sleeved on the touch column, and after the hardness of the touch column is increased through the sleeve, under the condition that the key cap deforms, the whole touch column can touch the switch only with small deformation, namely the deformation is small after the sleeve is sleeved on the touch column, and the condition that the key cap is large in deformation after being pressed but is kept sealed under the action of the first sealing ring and the second sealing ring and is not influenced by dust to cause a clamping key is avoided;

further, the inner and outer sealing is realized on the installation state of the whole key cap through the cap edge structure.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a key body according to an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of FIG. 2;

in the drawing the view of the figure,

the shell comprises a shell main body 1, a control circuit board 2, a switch 3, a mounting hole 4, a key cap 5, a touch column 6, a sleeve 7, a first sealing ring 8, a second sealing ring 9, a cap edge structure 10 and an indication mark 11.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.

As shown in fig. 1 to 3, in the embodiment of the present utility model, a waterproof key structure in a remote controller is provided, the entire key structure is installed in the remote controller, and specifically, a plurality of control keys may be installed in the remote controller to perform corresponding control, and the waterproof key structure specifically includes a housing main body 1 and a control circuit board 2 installed in the housing main body 1, where the control circuit board 2 is provided with a switch 3, the housing main body 1 is a housing structure of the remote controller, the internal control circuit board 2 is a conventional key circuit board, and the switch 3 adopts a dome sheet with elasticity, so that better key feedback is formed when touched. The shell main body 1 is provided with a mounting hole 4, a key cap 5 is arranged in the mounting hole 4, a touch column 6 extending towards the control circuit board 2 is arranged in the key cap 5, a sleeve 7 is sleeved on the touch column 6, the sleeve 7 is in interference fit with the touch column 6, the situation of relative looseness after being pressed is avoided, and the hardness of the sleeve 7 is greater than that of the touch column 6 and the key cap 5; the deformation of the touch column 6 is smaller than that of the key cap 5 by sleeving the sleeve 7 on the touch column 6, so that the switch 3 can be touched by the small deformation of the touch column 6 after the key cap 5 is pressed down.

Meanwhile, a first sealing ring 8 and a second sealing ring 9 are arranged on the key cap 5 at intervals, the position of the first sealing ring 8 is close to one side of the control circuit board 2, the outer diameter of the first sealing ring 8 is larger than that of the second sealing ring 9, and the first sealing ring 8 always maintains a sealing connection state with the mounting hole 4, so that failure of the sealing state is avoided after the key cap 5 is deformed, and good waterproof and dustproof effects are maintained; the second sealing ring 9 is mainly used for keeping the sealing state with the mounting hole 4 in a normal state to realize dust prevention, and the second sealing ring 9 is expanded outwards to keep the sealing state after the key cap 5 is pressed, so that the sealing state of the key cap 5 in the mounting hole 4 can be kept through a double-layer sealing structure, and the condition of dust entering inside cannot be caused in a mine dust environment.

Furthermore, a cap edge structure 10 is arranged on the key cap 5, the cap edge structure 10 is pressed between the shell main body 1 and the control circuit board 2, a good sealing state is further formed between the key cap 5 and the shell main body 1 through the cap edge structure 10, and sealing is achieved between the inside and the outside.

In order to ensure that the hardness of the touch post 6 can be improved after being sleeved by the sleeve 7, the hardness of the touch post is ensured to be higher than that of the key cap 5, the touch post is slightly deformed after being pressed, the length of the sleeve 7 is 2/3 longer than that of the touch post 6, one end part of the sleeve 7 is abutted against one side of the touch post 6 close to the key cap 5, or one end of the sleeve 7 is aligned with the tail end of the touch post 6, wherein the key body is made of silicon rubber, the sleeve 7 is made of nylon pipe, and the hardness of the whole touch post 6 is improved to be higher than that of the key cap 5 after being sleeved on the touch post 6 through the sleeve 7, so that the deformation of the touch post 6 is relatively small after the key cap 5 is pressed, and the condition that the sealing state is damaged after the first sealing ring 8 and the second sealing ring 9 relatively move in the mounting hole 4 is avoided.

In order to facilitate the structural stability of the whole key cap 5, the cap edge structure 10, the touch column 6, the first sealing ring 8 and the second sealing ring 9 are made of a key body which is formed by integral injection molding, and the shore hardness of the adopted silicone rubber material is between 40 and 50, so that the change of the deformation difference is obvious after the sleeve 7 is sleeved on the touch column 6.

Meanwhile, in order to avoid the situation that the key cap 5 is pressed down by being touched by mistake, the top of the key cap 5 and the opening edge of the mounting hole 4 are provided with a distance, so that the key cap 5 can be touched only by extending into the distance.

And the top surface of the key cap 5 is provided with an indication mark 11, so that the functions of keys at different positions can be conveniently identified.

In the description of the present utility model, it should be understood that the terms "orientation" or "positional relationship" are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims

1. A waterproof key structure in a remote controller is characterized in that: the intelligent control device comprises a shell main body (1) and a control circuit board (2) arranged in the shell main body (1), wherein a switch (3) is arranged on the control circuit board (2);

the shell is characterized in that a mounting hole (4) is formed in the shell main body (1), a key cap (5) is mounted in the mounting hole (4), a touch column (6) extending towards the control circuit board (2) is arranged in the key cap (5), a sleeve (7) is sleeved on the touch column (6), and the hardness of the sleeve (7) is greater than that of the touch column (6) and the key cap (5);

the key cap (5) is provided with a first sealing ring (8) and a second sealing ring (9) which are arranged at intervals, the position of the first sealing ring (8) is close to one side of the control circuit board (2), and the outer diameter of the first sealing ring (8) is larger than the outer diameter of the second sealing ring (9);

the key cap (5) is provided with a cap edge structure (10), and the cap edge structure (10) is tightly pressed between the shell main body (1) and the control circuit board (2).

2. The waterproof key structure in a remote controller according to claim 1, wherein: the length of the sleeve (7) is 2/3 longer than the length of the touch column (6).

3. The waterproof key structure in a remote controller according to claim 2, wherein: the key cap (5), the cap edge structure (10), the touch column (6), the first sealing ring (8) and the second sealing ring (9) are integrated injection molded key bodies.

4. A waterproof key structure in a remote controller according to claim 3, wherein: one end of the sleeve (7) is abutted against one side of the touch column (6) close to the key cap (5), or one end of the sleeve (7) is aligned with the tail end of the touch column (6).

5. A waterproof key structure in a remote controller according to claim 3 or 4, characterized in that: the key body is made of silicone rubber, and the sleeve (7) is made of nylon tubes.

6. The waterproof key structure in a remote controller according to claim 5, wherein: the Shore hardness of the key body is between 40 and 50.

7. The waterproof key structure in a remote controller according to claim 5, wherein: the top of the key cap (5) is spaced from the opening edge of the mounting hole (4).

8. The waterproof key structure in a remote controller according to claim 5, wherein: the top surface of the key cap (5) is provided with an indication mark (11).

9. The waterproof key structure in a remote controller according to claim 1, wherein: the sleeve (7) is in interference fit with the touch column (6).

10. The waterproof key structure in a remote controller according to claim 1, wherein: the switch (3) is an elastic dome.