CN219778751U

CN219778751U - Push button switch

Info

Publication number: CN219778751U
Application number: CN202321352812.3U
Authority: CN
Inventors: 涂江波
Original assignee: Shenzhen Yingxinke Technology Co ltd
Current assignee: Shenzhen Yingxinke Technology Co ltd
Priority date: 2023-05-30
Filing date: 2023-05-30
Publication date: 2023-09-29
Anticipated expiration: 2033-05-30

Abstract

The utility model discloses a button switch, which comprises a shell, a key, a base, a silica gel sealing piece, a circuit board and a needle seat, wherein the shell is annular; the key is arranged in the shell in a sliding way along the axial direction of the shell; the base is arranged in the shell; the silica gel sealing piece is arranged between the key and the base and is used for separating the inner space of the shell; the circuit board is arranged on the base, the circuit board is positioned between the base and the silica gel sealing piece, and a tact switch is arranged on one side of the circuit board, which is close to the key; the needle seat is provided with a contact pin welded with the circuit board; the circuit board is provided with a through hole for the contact pin to pass through, and the end part of the contact pin protrudes out of the top surface of the circuit board. The tip protrusion of contact pin sets up in the top surface of circuit board, and after circuit board and the needle file welding, contact pin and soldering tin had bigger area of contact for needle file and circuit board can form more stable connection, simultaneously, can improve the rosin joint phenomenon of contact pin and circuit board, do benefit to the plug resistance of improvement needle file, improve button switch's structural stability.

Description

Push button switch

Technical Field

The utility model relates to the technical field of master control appliances, in particular to a button switch.

Background

The button switch is a switch which uses a button to push a transmission mechanism, so that a movable contact and a static contact are pressed on or off, and circuit switching is realized. In an electric automatic control circuit, it is used to manually issue control signals to control contactors, relays, electromagnetic starters, etc.

The Chinese patent application No. 201922296731.6 discloses a button switch, in which, a needle seat is welded with a PCB assembly, specifically, a welding hole is arranged on a circuit board in the PCB assembly, a contact pin on the needle seat is inserted into the welding hole, in order to facilitate welding, generally, the end part of the contact pin does not exceed the top surface of the circuit board, soldering tin only covers the end surface of the contact pin and the welding hole, thus the phenomenon of cold joint is easy to occur, the binding force between the needle seat and the PCB assembly is weak, and the needle seat is not resistant to plugging.

Disclosure of Invention

The technical problems solved by the utility model are as follows: provided is a push button switch having excellent structural stability.

In order to solve the technical problems, the utility model adopts the following technical scheme: a push button switch comprising:

the shell is annular in whole;

the key is arranged in the shell in a sliding manner along the axial direction of the shell;

the base is arranged in the shell;

the silica gel sealing piece is arranged between the key and the base and is used for separating the inner space of the shell;

the circuit board is arranged on the base, the circuit board is positioned between the base and the silica gel sealing piece, and a tact switch is arranged on one side, close to the key, of the circuit board;

the needle seat is provided with a contact pin welded with the circuit board;

the circuit board is provided with a through hole for the contact pin to pass through, and the end part of the contact pin protrudes out of the top surface of the circuit board.

Further, the top surface of the circuit board is provided with soldering tin, and the soldering tin is arranged around the contact pin in a circle.

Further, a partial region of the base is located in a gap between the hub and the circuit board.

Further, the outer wall at the top of the base is provided with a first step part, a second step part is arranged in the shell, and the edge of the silica gel sealing piece is clamped between the first step part and the second step part.

Further, the silica gel sealing member comprises a central part, a skirt part and an outer ring part which are sequentially connected from inside to outside, the central part is a revolving body with a concave section, the key is provided with a lower convex part extending into the central part, and the lower convex part is arranged corresponding to the tact switch.

Further, the skirt portion is flared.

Further, the bottom of the center portion of the silicone seal has a protruding portion protruding downward, and the protruding portion contacts the tact switch.

Further, the bottom surface of the base is provided with stitch marks.

Further, one side of the circuit board, which is close to the keys, is provided with LED lamp beads, the silica gel sealing piece is transparent or semitransparent, and the keys are transparent or semitransparent.

Further, the needle seat is a vertical needle seat or a horizontal needle seat.

The utility model has the beneficial effects that: the tip protrusion of contact pin sets up in the top surface of circuit board, and after circuit board and the needle file welding, contact pin and soldering tin have bigger area of contact to make needle file and circuit board can form more stable connection, simultaneously, can improve the rosin joint phenomenon of contact pin and circuit board, be favorable to improving the plug resistance of needle file, and then improve button switch's structural stability.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a sectional view of a push button switch according to a first embodiment of the present utility model;

FIG. 2 is an exploded view of a push button switch according to a first embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a push button switch according to a first embodiment of the present utility model;

fig. 4 is a cross-sectional view of a push button switch of another construction according to a first embodiment of the present utility model.

Reference numerals illustrate:

1. a housing; 11. a second step portion;

2. a key; 21. a lower protruding part;

3. a base; 31. a first step portion; 32. stitch identification;

4. a silicone seal; 41. a center portion; 42. a skirt portion; 43. an outer ring portion; 44. a protruding portion;

5. a circuit board; 51. touching the switch; 52. perforating; 53. LED lamp beads;

6. a needle stand; 61. a contact pin;

7. waterproof rubber rings;

8. a fixing nut;

9. a cover plate;

10. and (5) soldering tin.

Detailed Description

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, in the embodiment of the present utility model, directional indications such as up, down, left, right, front, and rear … … are referred to, and the directional indication is merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture such as that shown in the drawings, and if the specific posture is changed, the directional indication is changed accordingly.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

In addition, if the meaning of "and/or" is presented throughout this document to include three parallel schemes, taking "and/or" as an example, including a scheme, or a scheme that is satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present 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.

Example 1

Referring to fig. 1 to 4, a first embodiment of the present utility model is as follows: referring to fig. 1 to 3, a push button switch includes: the novel waterproof plastic ring comprises a shell 1, keys 2, a base 3, a silica gel sealing piece 4, a circuit board 5, a needle seat 6, a waterproof plastic ring 7, a fixing nut 8 and a cover plate 9, wherein the shell 1 is in a ring shape as a whole, a threaded part is arranged on the outer wall of the shell 1, the fixing nut 8 is in threaded connection with the shell 1 through the threaded part, an extending part extending outwards is arranged at the top of the shell 1, and the waterproof plastic ring 7 is sleeved on the shell 1 and is located between the extending part and the fixing nut 8.

The button 2 is followed the axial slidable of shell 1 locates in the shell 1, be equipped with first limit structure on the shell 1, be equipped with on the button 2 with first limit structure complex second limit structure, first limit structure with second limit structure's cooperation can prevent button 2 follow shell 1's top is deviate from shell 1, in this embodiment, first limit structure and second limit structure are step structure respectively, in other embodiments, first limit structure can be the bolt, second limit structure is with bolt complex word hole etc..

The cover 9 is disposed at the top of the key 2, and in this embodiment, an embedded portion inserted into the key 2 is disposed at an edge of the cover 9.

The base 3 is arranged in the shell 1, the silica gel sealing element 4 is arranged between the key 2 and the base 3, the silica gel sealing element 4 is used for separating the inner space of the shell 1, and the silica gel sealing element 4 mainly plays a role in preventing water vapor and dust from entering through gaps between the key 2 and the shell 1 so as to pollute the circuit board 5.

The circuit board 5 is installed on the base 3, the circuit board 5 is located between the base 3 and the silica gel sealing member 4, one side of the circuit board 5, which is close to the key 2, is provided with a tact switch 51, and when the key 2 is pressed down, the key 2 indirectly abuts against the tact switch 51 through the silica gel sealing member 4, so that corresponding instructions are triggered.

The needle seat 6 is provided with a pin 61 welded with the circuit board 5, the circuit board 5 is provided with a through hole 52 for the pin 61 to pass through, and the end part of the pin 61 protrudes out of the top surface of the circuit board 5.

Specifically, the top surface of the circuit board 5 has solder 10, and the solder 10 is disposed around the pins 61 in a circle. More specifically, the number of pins 61 and the number of through holes 52 are respectively plural, and the pins 61 and the through holes 52 are in one-to-one correspondence, and a circle of solder 10 surrounds each pin 61.

The partial area of the base 3 is located in the gap between the needle seat 6 and the circuit board 5, and the base 3 area located in the gap between the needle seat 6 and the circuit board 5 is abutted against the circuit board 5 and the needle seat 6 respectively. In the process of manufacturing the push-button switch, the circuit board 5, the base 3 and the needle seat 6 are assembled into an integral structure in the welding procedure of the contact pin 61 and the circuit board 5, and as the partial area of the base 3 is positioned in the gap between the needle seat 6 and the circuit board 5, the base 3 cannot be separated from the integral structure, so that the subsequent assembly work of the push-button switch can be facilitated, the structural stability of the push-button switch can be further improved, and the needle seat 6 is more resistant to plugging.

The silica gel sealing member 4 comprises a central portion 41, a skirt portion 42 and an outer ring portion 43 which are sequentially connected from inside to outside, the central portion 41 is a rotator with a concave section, the key 2 is provided with a lower protruding portion 21 extending into the central portion 41, and the lower protruding portion 21 is arranged corresponding to the tact switch 51. The lower convex part 21 of the key 2 can play a role in positioning the silica gel sealing piece 4, so that the center of the silica gel sealing piece 4 is prevented from shifting after long-time use, and the waterproof effect of the button switch is guaranteed.

As a preferred embodiment, the skirt 42 is horn-shaped, so that the skirt can provide enough deformation allowance for the compressive deformation of the silicone seal 4, and prevent the local area of the silicone seal 4 from being excessively pulled to be damaged or displaced during the pressing process of the key 2, so that the waterproof performance of the push button switch is reduced.

Optionally, the bottom of the central portion 41 of the silicone seal 4 has a downwardly protruding projection 44, said projection 44 contacting the tact switch 51.

The outer wall at the top of the base 3 is provided with a first step part 31, the housing 1 is internally provided with a second step part 11, and the edge of the silica gel sealing member 4 is clamped between the first step part 31 and the second step part 11. The edge of the silica gel sealing member 4 is clamped and fixed by the first step part 31 and the second step part 11, so that the waterproof effect of the push-button switch is further improved. In this embodiment, the outer edge of the outer ring 43 is clamped and fixed between the first step 31 and the second step 11.

Optionally, the bottom surface of the base 3 is provided with a stitch mark 32.

Further, an LED lamp bead 53 is disposed on a side of the circuit board 5, which is close to the key 2, the silica gel sealing member 4 is transparent or semitransparent, and the key 2 is transparent or semitransparent. In this embodiment, the silica gel sealing member 4 is transparent soft silica gel, the LED lamp bead 53 includes a red light lamp bead and a green light lamp bead, and the light emitted by the LED lamp bead 53 can be emitted outwards through the silica gel sealing member 4 and the key 2.

Optionally, the needle seat 6 is a vertical needle seat and is used for being inserted with an external terminal along the vertical direction. Of course, as shown in fig. 4, it is also possible to replace the vertical needle holder with a horizontal needle holder for being inserted into the external terminal in the lateral direction.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. Button switch, its characterized in that: comprising

The shell is annular in whole;

the base is arranged in the shell;

the needle seat is provided with a contact pin welded with the circuit board;

2. The push button switch of claim 1, wherein: the top surface of the circuit board is provided with soldering tin, and the soldering tin surrounds the contact pin in a circle.

3. The push button switch of claim 1, wherein: a partial region of the base is located in a gap between the hub and the circuit board.

4. The push button switch of claim 1, wherein: the outer wall at the top of base is equipped with first step portion, be equipped with second step portion in the shell, the edge centre gripping of silica gel sealing member in between first step portion with second step portion.

5. The push button switch of claim 1, wherein: the silica gel sealing element comprises a central part, a skirt part and an outer ring part which are sequentially connected from inside to outside, the central part is a revolving body with a concave section, the key is provided with a lower convex part extending into the central part, and the lower convex part is arranged corresponding to the tact switch.

6. The push button switch of claim 5, wherein: the skirt portion is horn-shaped.

7. The push button switch of claim 5, wherein: the bottom of the center portion of the silicone seal has a protruding portion protruding downward, which contacts the tact switch.

8. The push button switch of claim 1, wherein: the bottom surface of base is equipped with stitch sign.

9. The push button switch of claim 1, wherein: the LED lamp beads are arranged on one side, close to the keys, of the circuit board, the silica gel sealing piece is transparent or semitransparent, and the keys are transparent or semitransparent.

10. The push button switch of claim 1, wherein: the needle seat is a vertical needle seat or a horizontal needle seat.