CN220873453U - Waterproof switch and electronic key - Google Patents

Abstract

The application provides a waterproof switch and an electronic key. The waterproof switch comprises a soft membrane, a base, a conductive assembly, a limiting pressing block, a button assembly and a bottom shell, wherein the base is provided with an accommodating cavity, a skirt ring is arranged around the accommodating cavity, the skirt ring is provided with a concave limiting groove, the periphery of the soft membrane is bonded on the skirt ring in a hot melt manner, and the soft membrane is provided with a limiting strip embedded in the concave limiting groove; the limit pressing block is pressed on the periphery of the soft membrane, so that the limit pressing block and the skirt ring jointly extrude the periphery of the soft membrane. Through with the periphery hot melt bonding of soft diaphragm on the apron, spacing embedding is in concave spacing inslot simultaneously for closely and firmly connect between soft diaphragm and the base, the spacing briquetting of reuse and apron co-extrusion soft diaphragm's periphery avoid the soft diaphragm to appear the problem of displacement, make the soft diaphragm better to the sealed effect of holding chamber, avoided steam and dust to get into the holding intracavity, improved waterproof switch's life.

Description

Waterproof switch and electronic key

Technical Field

The utility model relates to the technical field of switches, in particular to a waterproof switch and an electronic key.

Background

Nowadays, with the rapid development of electronic technology, digital electronic products such as digital cameras and mobile phones are also generated, and the electronic products need to use waterproof switches when inputting keys.

The waterproof switch generally comprises a base, a conductive terminal, an elastic sheet, a button and an upper cover, wherein the conductive terminal and the elastic sheet are contained in an inner cavity of the base, and the elastic sheet is pressed by the button to conduct the conductive terminal, so that the switch function is realized. Wherein, in order to realize waterproof switch's waterproof dustproof effect betterly, traditional sealing means is equipped with the silica gel pad between shell fragment and button, utilizes the silica gel pad to carry out the shutoff to the inner chamber of base. But in waterproof switch's removal use, the silica gel pad can take place the problem of displacement for the base, leads to the silica gel pad to be relatively poor to the sealed effect of the inner chamber of base to there is certain clearance between silica gel pad and the base, thereby makes waterproof switch's waterproof dustproof effect relatively poor.

Based on this, waterproof switch among the prior art adopts the mode of scribbling glue at the periphery of silica gel pad for the periphery of silica gel pad closely adheres to the skirt of base, has also eliminated the clearance between silica gel pad and the base, in order to realize the seal to the inner chamber of base.

The waterproof and dustproof effects of the waterproof switch can be conveniently realized in the prior art, but the technical scheme also has the following problems:

Due to the fact that the materials of the glue, the silica gel pad and the base are different, the glue can be aged along with the use of the waterproof switch, after the glue loses viscosity, the connection stability between the silica gel pad and the base is poor, gaps are formed between the silica gel pad and the base, and water vapor and dust enter the inner cavity of the base, so that the service life of the waterproof switch is shortened; in addition, the waterproof switch is required to be glued in the assembly process, the process requirement is high, and the assembly efficiency of the waterproof switch is reduced; glue overflow problem easily occurs in the coating process, and when the glue gets into the inner chamber of base, metal's shell fragment can be adhered to for waterproof switch presses the inefficacy problem.

Disclosure of utility model

The utility model aims to overcome the defects in the prior art and provide a waterproof switch and an electronic key, which can avoid a gap between a silica gel pad and a base and improve the service life and the assembly efficiency.

The aim of the utility model is realized by the following technical scheme:

The waterproof switch comprises a soft membrane, a base, a conductive assembly, a limiting pressing block, a button assembly and a bottom shell, wherein an accommodating cavity is formed in the base, a skirt ring is arranged around the accommodating cavity, an inward concave limiting groove is formed in the skirt ring, the periphery of the soft membrane is bonded on the skirt ring in a hot melt mode, and a limiting strip embedded in the inward concave limiting groove is arranged on the soft membrane; the conductive component comprises a conductive terminal and an elastic sheet, the conductive terminal is arranged on the inner wall of the bottom of the accommodating cavity, and two sides of the elastic sheet are respectively abutted with the conductive terminal and the soft film sheet; the limiting pressing block is pressed on the periphery of the soft membrane, so that the limiting pressing block and the skirt ring jointly extrude the periphery of the soft membrane, and the limiting pressing block is provided with a through hole and a cover-set limiting groove which are communicated with each other; the button assembly comprises a pressing rod and a button, the button is arranged in the center of the soft membrane, the first end of the pressing rod is abutted to the button, the first end of the pressing rod is limited and moves in the cover-arranged limiting groove, and the second end of the pressing rod penetrates through the through hole; the bottom shell is provided with an accommodating groove, the accommodating groove sequentially accommodates the base and the limiting press block in a coating mode, and the bottom shell is detachably connected with the limiting press block.

In one embodiment, the flexible membrane is a PI membrane.

In one embodiment, the number of the limit bars is a plurality.

In one embodiment, the conductive terminal is overmolded on the bottom inner wall of the accommodating cavity.

In one embodiment, the pressing rod includes a pressing portion and an abutting portion connected to each other, and the abutting portion is further abutted with the button.

In one embodiment, the first end of the pressing part is provided with a slider, the slider is connected with the abutting part, the slider is slidably clamped on the inner wall of the cover locating groove, the length of the slider is larger than the aperture of the through hole, and the first end of the pressing part is penetrated through the through hole.

In one embodiment, the pressing portion and the abutting portion are integrally formed.

In one embodiment, two buckling grooves are formed on two sides of one end, which is away from the base, of the limiting pressing block, two buckling protrusions are respectively arranged on top walls of two sides of the containing groove, the two buckling protrusions are respectively arranged in one-to-one correspondence with the two buckling grooves, and each buckling protrusion is in buckling connection with the inner wall of the corresponding buckling groove.

In one embodiment, two clamping grooves are respectively formed in two sides of the skirt ring, two clamping protrusions are respectively formed in two sides, adjacent to one end of the base, of the limiting pressing block, the two clamping protrusions are respectively arranged in one-to-one correspondence with the two clamping grooves, and each clamping protrusion is clamped to the inner wall of the corresponding clamping groove.

An electronic key comprising a waterproof switch as described in any one of the above embodiments.

Compared with the prior art, the utility model has the following advantages:

1. The periphery of the soft membrane is bonded on the skirt by hot melt, and meanwhile, the limiting strips are embedded in the concave limiting grooves, so that the soft membrane and the base are tightly and firmly connected, and the limiting pressing blocks and the skirt are used for extruding the periphery of the soft membrane together, so that a good limiting and fixing effect is achieved on the soft membrane, the problem of displacement of the soft membrane is avoided, a gap is also avoided between the soft membrane and the base, the sealing effect of the soft membrane on the accommodating cavity is good, water vapor and dust are prevented from entering the accommodating cavity, and the service life of the waterproof switch is prolonged;

2. The glue coating process is omitted, the assembly efficiency of the waterproof switch is improved, the problem that glue overflows into the accommodating cavity in the coating process is avoided, and the problem that the waterproof switch is in pressing failure is further prevented.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a waterproof switch in an embodiment;

fig. 2 is another schematic structural view of the waterproof switch shown in fig. 1;

FIG. 3 is a cross-sectional view of the waterproof switch shown in FIG. 2 taken along line A-A;

fig. 4 is an enlarged view of the waterproof switch shown in fig. 3 at b;

FIG. 5 is a schematic diagram showing the connection between the base and the conductive member in the waterproof switch shown in FIG. 1;

Fig. 6 is a schematic structural view of a limit pressing block in the waterproof switch shown in fig. 1;

FIG. 7 is a schematic view of the button assembly of the waterproof switch of FIG. 1;

fig. 8 is a schematic structural view of a bottom case in the waterproof switch shown in fig. 1.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In order to better understand the technical scheme and beneficial effects of the present application, the following describes the present application in further detail with reference to specific embodiments:

Referring to fig. 1 to 8, a waterproof switch 10 according to an embodiment of the utility model includes a flexible membrane 100, a base 200, a conductive component 300, a limit pressing block 400, a button component 500 and a bottom case 600, wherein the base 200 is formed with a receiving cavity 201, the base 200 is provided with a skirt 210 surrounding the receiving cavity, the skirt 210 is formed with a concave limit groove 2101, the periphery of the flexible membrane 100 is thermally bonded on the skirt 210, and the flexible membrane 100 is provided with a limit strip 110 embedded in the concave limit groove 2101; the conductive assembly 300 includes a conductive terminal 310 and a spring piece 320, the conductive terminal 310 is disposed on the bottom inner wall of the accommodating cavity, and two sides of the spring piece 320 are respectively abutted to the conductive terminal 310 and the flexible film 100; the limit pressing block 400 is pressed on the periphery of the soft film sheet 100, so that the limit pressing block 400 and the skirt 210 co-squeeze the periphery of the soft film sheet 100, and the limit pressing block 400 is formed with a through hole 401 and a cover limit groove 402 which are mutually communicated; the button assembly 500 includes a pressing rod 510 and a button 520, the button 520 is disposed at the center of the flexible membrane sheet 100, a first end of the pressing rod 510 abuts against the button 520, the first end of the pressing rod 510 is limited and moves in the cap limiting groove 402, and a second end of the pressing rod 510 is disposed through the through hole 401; the bottom case 600 is formed with a receiving groove 601, the receiving groove 601 sequentially covers and receives the base 200 and the limit pressing block 400, and the bottom case 600 is detachably connected with the limit pressing block 400.

In this embodiment, the base 200 is formed with a receiving cavity, the conductive terminal 310 is disposed on the bottom inner wall of the receiving cavity, and the elastic sheet 320 is abutted to the conductive terminal 310; the base 200 is provided with the apron 210 around the accommodating cavity, the apron 210 is provided with the concave limit groove 2101, the soft membrane 100 is provided with the limit strips 110, and the periphery of the soft membrane 100 is bonded on the apron 210 in a hot melt mode, meanwhile, the limit strips 110 are embedded in the concave limit groove 2101, so that the soft membrane 100 and the base 200 are tightly and firmly connected, a gap is prevented from being formed between the soft membrane 100 and the base 200, the sealing effect of the soft membrane 100 on the accommodating cavity is good, water vapor and dust are prevented from entering the accommodating cavity, and the service life of the waterproof switch 10 is prolonged; when the flexible membrane 100 is covered and sealed in the accommodating cavity, the flexible membrane 100 is also abutted against one side of the elastic sheet 320, which is away from the conductive terminal 310, the button assembly 500 comprises a pressing rod 510 and a button 520, the button 520 is arranged in the center of the flexible membrane 100, the first end of the pressing rod 510 is abutted against the button 520, and since the limiting press block 400 is formed with a through hole 401 and a covered limiting groove 402 which are mutually communicated, the limiting press block 400 is covered on the periphery of the flexible membrane 100, the covered limiting groove 402 is used for limiting and accommodating the first end of the pressing rod 510, and the second end of the pressing rod 510 is penetrated in the through hole 401; it can be understood that the limit pressing block 400 and the skirt 210 jointly squeeze the periphery of the soft membrane 100, so as to play a better role in limiting and fixing the soft membrane 100, so as to avoid the problem of displacement of the soft membrane 100; in addition, since the bottom case 600 is formed with the accommodating groove 601, the accommodating base 200 and the limit pressing block 400 are sequentially covered by the accommodating groove 601, and finally, the bottom case 600 and the limit pressing block 400 are connected to complete the assembly of the waterproof switch 10. The assembled waterproof switch 10 is characterized in that the second end of the pressing rod 510 is pressed, so that the first end of the pressing rod 510 is stressed on the button 520, the button 520 transmits force to the elastic sheet 320 through the flexible film sheet 100, and the elastic sheet 320 is stressed to deform to conduct the conductive terminal 310, thereby realizing a switching function.

In this embodiment, the periphery of the flexible membrane 100 is bonded on the skirt 210 by hot melt, and meanwhile, the limiting strips 110 are embedded in the concave limiting grooves 2101, so that the flexible membrane 100 and the base 200 are tightly and firmly connected, and then the limiting press block 400 and the skirt 210 are used for extruding the periphery of the flexible membrane 100 together, so that the flexible membrane 100 is well limited and fixed, the problem of displacement of the flexible membrane 100 is avoided, a gap is also avoided between the flexible membrane 100 and the base 200, the sealing effect of the flexible membrane 100 on the accommodating cavity is good, water vapor and dust are prevented from entering the accommodating cavity, and the service life of the waterproof switch 10 is prolonged; the gluing process is omitted, the assembly efficiency of the waterproof switch 10 is improved, the problem that glue overflows into the accommodating cavity in the coating process is avoided, and the problem that the waterproof switch 10 is in pressing failure is further prevented.

Further, the soft membrane is bonded to the skirt by ultrasonic hot melt. In another embodiment, the flexible membrane is laser heat fusion bonded to the skirt.

In one embodiment, the flexible membrane is a PI membrane. In this example, the PI Film is a Polyimide Film, which is known as a Polyimide Film. It should be noted that the present application does not protect the particular material of the flexible membrane, but only its structure, so that the flexible membrane can be obtained from other polymeric materials as well. The PI membranes mentioned in this example were purchased from dupont, usa.

In one embodiment, referring to fig. 3 and 4, the number of the limit bars 110 is plural. In this way, the connection stability between the flexible membrane 100 and the base 200 is better.

In one embodiment, the conductive terminal is overmolded on the bottom inner wall of the accommodating cavity.

In one embodiment, referring to fig. 3 and 7, the pressing rod 510 includes a pressing portion 512 and an abutting portion 514 connected to each other, and the abutting portion 514 is also abutted against the button 520.

Further, referring to fig. 3 and 7, a first end of the pressing portion 512 is provided with a slider 5121, the slider 5121 is connected to the abutting portion 514, the slider 5121 is slidably engaged with an inner wall of the cap positioning slot 402, a length of the slider 5121 is greater than an aperture of the through hole 401, and the first end of the pressing portion 512 is disposed through the through hole 401. In this embodiment, the first end of the pressing portion 512 is provided with a slider 5121, the length of the slider 5121 is greater than the aperture of the through hole 401, and the first end of the pressing portion 512 is limited and moved in the capped limiting groove 402 by providing the slider 5121.

In one embodiment, referring to fig. 3, the pressing portion 512 and the abutting portion 514 are integrally formed. In this way, the structural strength of the pressing lever 510 is improved.

In one embodiment, referring to fig. 6 and 8, two fastening grooves 403 are formed on two sides of one end of the limiting pressing block 400 facing away from the base 200, two fastening protrusions 610 are respectively disposed on top walls of two sides of the receiving groove 601, the two fastening protrusions 610 are respectively disposed in one-to-one correspondence with the two fastening grooves 403, and each fastening protrusion 610 is fastened to an inner wall of the corresponding fastening groove 403. In this embodiment, the two fastening protrusions 610 are fastened and connected with the inner walls of the two fastening slots 403 in a one-to-one correspondence manner, so that the connection strength between the limit pressing block 400 and the bottom shell 600 is high.

In one embodiment, referring to fig. 5 and 6, two clamping grooves 202 are respectively formed on two sides of the skirt 210 of the base 200, two clamping protrusions 410 are respectively formed on two sides of one end of the limiting press block 400 adjacent to the base 200, the two clamping protrusions 410 are respectively disposed in one-to-one correspondence with the two clamping grooves 202, and each clamping protrusion 410 is clamped to the inner wall of the corresponding clamping groove 202. In this embodiment, the two clamping protrusions 410 are clamped with the inner walls of the two clamping grooves 202 in a one-to-one correspondence manner, so that the connection strength between the limit pressing block 400 and the base 200 is high.

The utility model also provides an electronic key, which comprises the waterproof switch in any embodiment.

Compared with the prior art, the utility model has the following advantages:

1. The periphery of the soft film sheet 100 is bonded on the skirt 210 in a hot melt mode, meanwhile, the limiting strips 110 are embedded in the concave limiting grooves 2101, so that the soft film sheet 100 is tightly and firmly connected with the base 200, the limiting pressing blocks 400 and the skirt 210 are used for extruding the periphery of the soft film sheet 100 together, a good limiting and fixing effect is achieved on the soft film sheet 100, the problem of displacement of the soft film sheet 100 is avoided, a gap is also avoided between the soft film sheet 100 and the base 200, the sealing effect of the soft film sheet 100 on the accommodating cavity is good, water vapor and dust are prevented from entering the accommodating cavity, and the service life of the waterproof switch 10 is prolonged;

2. The gluing process is omitted, the assembly efficiency of the waterproof switch 10 is improved, the problem that glue overflows into the accommodating cavity in the coating process is avoided, and the problem that the waterproof switch 10 is in pressing failure is further prevented.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A waterproof switch, comprising:

A flexible membrane;

the base is provided with a containing cavity, a skirt ring is arranged around the containing cavity, the skirt ring is provided with a concave limiting groove, the periphery of the soft membrane is bonded on the skirt ring in a hot melt mode, and the soft membrane is provided with a limiting strip embedded in the concave limiting groove;

The conductive component comprises a conductive terminal and an elastic sheet, the conductive terminal is arranged on the inner wall of the bottom of the accommodating cavity, and two sides of the elastic sheet are respectively abutted with the conductive terminal and the soft membrane;

The limiting pressing block is pressed on the periphery of the soft membrane, so that the limiting pressing block and the skirt ring jointly squeeze the periphery of the soft membrane, and the limiting pressing block is provided with a through hole and a cover-set limiting groove which are communicated with each other;

The button assembly comprises a pressing rod and a button, the button is arranged in the center of the soft membrane, the first end of the pressing rod is abutted to the button, the first end of the pressing rod is limited and moves in the cover-arranged limiting groove, and the second end of the pressing rod penetrates through the through hole;

The bottom shell is provided with an accommodating groove, the accommodating groove sequentially accommodates the base and the limiting press block in a coating mode, and the bottom shell is detachably connected with the limiting press block.

2. The waterproof switch of claim 1, wherein the flexible membrane is a PI membrane.

3. The waterproof switch of claim 1, wherein the number of the limit bars is a plurality.

4. The waterproof switch of claim 1, wherein the conductive terminal is overmolded onto a bottom inner wall of the housing cavity.

5. The waterproof switch according to claim 1, wherein the pressing lever includes a pressing portion and an abutting portion connected to each other, the abutting portion further abutting against the button.

6. The waterproof switch according to claim 5, wherein a first end of the pressing portion is provided with a slider, the slider is connected to the abutting portion, the slider is slidably engaged with an inner wall of the cap positioning groove, a length of the slider is greater than an aperture of the through hole, and the first end of the pressing portion is disposed through the through hole.

7. The waterproof switch according to claim 5, wherein the pressing portion and the abutting portion are of an integrally molded structure.

8. The waterproof switch according to claim 1, wherein two buckling grooves are formed on two sides of one end of the limiting pressing block, which is away from the base, respectively, two buckling protrusions are respectively arranged on top walls of two sides of the containing groove, the two buckling protrusions are respectively arranged in one-to-one correspondence with the two buckling grooves, and each buckling protrusion is buckled and connected with the inner wall of the corresponding buckling groove.

9. The waterproof switch of claim 1, wherein two clamping grooves are respectively formed in two sides of the skirt ring, two clamping protrusions are respectively formed in two sides, adjacent to one end of the base, of the limiting pressing block, the two clamping protrusions are respectively arranged in one-to-one correspondence with the two clamping grooves, and each clamping protrusion is clamped to the inner wall of the corresponding clamping groove.

10. An electronic key comprising a waterproof switch as claimed in any one of claims 1 to 9.