Microswitch with embedded terminal structure
By adopting an embedded terminal structure in the micro switch, using the design of arc-surface projections and limit blocks, the problems of easy displacement of the terminal structure and difficult manufacturing are solved, and more compact, stable connection and low cost are achieved Production, improve performance and assembly efficiency.
Patent Information
- Application Number
- CN202420060092.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-10
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-01-10
AI Technical Summary
The terminal structure of existing micro switches is prone to performance changes and poor yields due to external force displacement, and is difficult to match with minor interference and high manufacturing and control costs.
Adopt an embedded terminal structure, by setting arc-surface protrusions and limit blocks on the terminals and housings, and using elastic connections and positioning grooves to increase the interference and elasticity of arc-surface protrusions to ensure compact and stable connections. , avoid loosening and falling off.
The micro switch has a simple structure, stable and reliable performance and low cost, reducing plastic damage and production costs, and improving assembly efficiency and waterproof performance.
Smart Images
Figure CN222260850U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a micro switch, in particular to a micro switch with an embedded terminal structure. Background Art
[0002] A micro switch is a switch with a small contact spacing and a snap-action mechanism, a contact mechanism that performs a switch action with a specified stroke and a specified force, and is covered with a housing with a drive rod on the outside. Because the contact spacing of the switch is relatively small, it is called a micro switch, also known as a sensitive switch. The existing micro switch includes a housing, a first terminal, a second terminal, a third terminal, a moving reed, and a button disposed on the housing and used to drive the moving reed. The existing first terminal, second terminal, and third terminal are mostly clearance fit or slight interference fit.
[0003] The above two methods have the following risks:
[0004] 1. Clearance fit: The first terminal, the second terminal, and the third terminal may be displaced due to external force before sealing, causing the performance of the product to change, resulting in defective products and reducing the qualified rate;
[0005] 2. It is very difficult to control the micro interference, and the dimensional accuracy requirement is very high. If the interference is slightly larger, there is a risk of the shell being squeezed and broken. Therefore, it increases the difficulty of mold manufacturing and the difficulty of controlling the production process, greatly increasing the production cost and control cost. Summary of the invention
[0006] The utility model aims to overcome the defects of the prior art and provide a micro switch with an embedded terminal structure which has a simple structure, stable and reliable performance and low cost.
[0007] To achieve the above-mentioned purpose, the utility model adopts a micro switch with an embedded terminal structure, including a shell, a switch component arranged in the shell, the switch component including a first terminal arranged on the shell, a second terminal arranged on the shell, a third terminal arranged on the shell, a moving spring arranged on the first terminal, and a button arranged on the shell and used to drive the moving spring to move. The second terminal and the third terminal are respectively provided with static contacts that match the moving spring. The first terminal, the second terminal, and the third terminal are respectively provided with an arc-surface protrusion on both sides, and the arc-surface protrusions are respectively abutted on the inclined surface in the insertion hole of the shell. The first terminal, the second terminal, and the third terminal are provided with a through hole between the corresponding two arc-surface protrusions. The first terminal, the second terminal, and the third terminal are provided with two limit blocks abutting in the shell on both sides.
[0008] The beneficial effects of the above structure are as follows: the first terminal, the second terminal, and the third terminal are provided with an arc-surface protrusion that engages with the shell, and the arc-surface protrusion contacts the inclined surface in the socket of the shell, and the arc-surface protrusion will not scratch the shell, reducing the appearance of plastic powder, and the arc-surface protrusion is stuck on the inclined surface in the socket of the shell to prevent the arc-surface protrusion from squeezing the shell, which can ensure that the connection between the first terminal, the second terminal, and the third terminal and the shell is more compact and firm. The first terminal, the second terminal, and the third terminal are elastically connected with the shell, and a through hole is provided between the corresponding two arc-surface protrusions on the first terminal, the second terminal, and the third terminal, so that the elasticity of the first terminal, the second terminal, and the third terminal can be enhanced, and the interference of the arc-surface protrusion can be increased to ensure that the arc-surface protrusion can be clamped in the shell. Two limit blocks that contact the shell are provided on both sides of the first terminal, the second terminal, and the third terminal, and the two limit blocks can play a limiting role, which can prevent the first terminal, the second terminal, and the third terminal from loosening and falling off from the shell. Therefore, the micro switch has the advantages of simple structure, stable and reliable performance and low cost.
[0009] In particular, the number of the through holes is two, and the shape of the through holes is oblong or square. The through holes can increase the elasticity of the first terminal, the second terminal, and the third terminal, and can ensure that the connection between the first terminal, the second terminal, the third terminal and the housing is more compact and firm.
[0010] In particular, the first terminal is provided with a first support arm and a second support arm at one end, and the first support arm and the second support arm are provided with positioning grooves matched with the movable spring piece, and the movable spring piece is engaged with the positioning groove, and the first support arm, the second support arm and the movable spring piece are engaged with each other. The movable spring piece is engaged with the first support arm and the second support arm of the first terminal, so as to facilitate the assembly of the movable spring piece and the first terminal, and the assembly efficiency is higher.
[0011] In particular, a support protrusion is provided in the housing corresponding to the second support arm, one end of the support protrusion abuts against the second support arm, and forms a limit fit between the support protrusion and the second support arm. The support protrusion can enhance the overall strength of the second support arm, which is beneficial to improving the working reliability of the micro switch.
[0012] In particular, the button is provided with a sealing sleeve which is sealed with the housing, and the sealing sleeve can enhance the sealing performance between the button and the housing, which is beneficial to improving the waterproof performance of the micro switch. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is the front view of the embodiment of the utility model.
[0014] Figure 2 for Figure 1 Middle AA section view.
[0015] Figure 3 This is an internal structure diagram of an embodiment of the utility model.
[0016] Figure 4 It is a three-dimensional diagram of the first terminal of an embodiment of the utility model.
[0017] Figure 5 This is an assembly diagram of the first terminal, the second terminal, the third terminal and the housing according to an embodiment of the utility model. DETAILED DESCRIPTION
[0018] like Figures 1 to 5 As shown, the embodiment of the utility model is a micro switch with an embedded terminal structure, including a housing 10, a switch assembly 20 arranged in the housing 10, the switch assembly 20 includes a first terminal 21 arranged on the housing 10, a second terminal 22 arranged on the housing 10, a third terminal 23 arranged on the housing 10, a moving reed 24 arranged on the first terminal 21, and a button 25 arranged on the housing 10 and used to drive the moving reed 24 to move, and the second terminal 22 and the third terminal 23 are respectively provided with a button that is in contact with the moving reed 24. The first terminal 21, the second terminal 22, and the third terminal 23 are provided with a curved surface protrusion 200 on both sides, and the curved surface protrusion 200 respectively contacts the inclined surface 101 in the jack 100 of the housing 10. The first terminal 21, the second terminal 22, and the third terminal 23 are provided with a through hole 201 between two corresponding curved surface protrusions 200. The first terminal 21, the second terminal 22, and the third terminal 23 are provided with two limit blocks 202 on both sides that contact the housing 10. The number of the through holes 201 is two, and the shape of the through holes 201 is oblong or square. The through hole can increase the elasticity of the first terminal, the second terminal, and the third terminal, and can ensure that the connection between the first terminal, the second terminal, and the third terminal and the housing is more compact and firm.
[0019] like Figure 3 and 5As shown, the first terminal 21 is provided with a first support arm 211 and a second support arm 212 at one end, and the first support arm 211 and the second support arm 212 are provided with a positioning groove 213 matched with the moving spring 24, and the moving spring 24 is engaged with the positioning groove 213, and the first support arm 211, the second support arm 212 and the moving spring 24 are engaged. The moving spring is engaged with the first support arm and the second support arm of the first terminal, so as to facilitate the assembly of the moving spring and the first terminal, and the assembly efficiency is higher. A support protrusion 102 is provided in the housing 10 corresponding to the second support arm 212, and one end of the support protrusion 102 abuts against the second support arm 212, and the support protrusion 102 and the second support arm 212 are formed. The support protrusion can enhance the overall strength of the second support arm, which is conducive to improving the working reliability of the micro switch. The button 25 is provided with a sealing sleeve 27 that is sealed with the housing 10. The sealing sleeve can enhance the sealing performance between the button and the housing, which is beneficial to improving the waterproof performance of the micro switch.
[0020] The first terminal, the second terminal, and the third terminal are provided with an arc-surface protrusion that is engaged with the housing. The arc-surface protrusion contacts the inclined surface in the socket of the housing. The arc-surface protrusion will not scratch the housing, reducing the appearance of plastic powder. The arc-surface protrusion is stuck on the inclined surface in the socket of the housing to prevent the arc-surface protrusion from squeezing the housing, which can ensure that the connection between the first terminal, the second terminal, and the third terminal and the housing is more compact and firm. The first terminal, the second terminal, and the third terminal are elastically connected and matched with the housing. A through hole is provided between the corresponding two arc-surface protrusions on the first terminal, the second terminal, and the third terminal, so that the elasticity of the first terminal, the second terminal, and the third terminal can be enhanced, the interference of the arc-surface protrusion can be increased, and the arc-surface protrusion can be clamped in the housing. Two limit blocks that contact the housing are provided on both sides of the first terminal, the second terminal, and the third terminal. The two limit blocks can play a limiting role, which can prevent the first terminal, the second terminal, and the third terminal from loosening and falling off from the housing. Therefore, the micro switch has the advantages of simple structure, stable and reliable performance, and low cost.
Claims
1. A micro switch with an embedded terminal structure, comprising a housing and a switch assembly disposed in the housing, characterized in that: The switch assembly includes a first terminal arranged on the shell, a second terminal arranged on the shell, a third terminal arranged on the shell, a movable spring arranged on the first terminal, and a button arranged on the shell and used to drive the movable spring to move. The second terminal and the third terminal are respectively provided with static contacts that cooperate with the movable spring. An arc-surface protrusion is respectively provided on both sides of the first terminal, the second terminal, and the third terminal. The arc-surface protrusions are respectively abutted on the inclined surfaces in the insertion hole of the shell. A through hole is provided between the corresponding two arc-surface protrusions on the first terminal, the second terminal, and the third terminal. Two limit blocks abutting in the shell are provided on both sides of the first terminal, the second terminal, and the third terminal.
2. The micro switch with embedded terminal structure according to claim 1, characterized in that: The number of the through holes is two, and the shape of the through holes is oblong or square.
3. The micro switch with embedded terminal structure according to claim 1 or 2, characterized in that: The first terminal is provided with a first support arm and a second support arm at one end, respectively, and the first support arm and the second support arm are provided with positioning grooves matching with the movable spring piece, respectively, and the movable spring piece is engaged with the positioning grooves, and the first support arm, the second support arm and the movable spring piece are engaged with each other.
4. The micro switch with embedded terminal structure according to claim 1 or 2, characterized in that: A support protrusion is arranged in the shell at a position corresponding to the second support arm. One end of the support protrusion abuts against the second support arm, and a limiting fit is formed between the support protrusion and the second support arm.
5. The micro switch with embedded terminal structure according to claim 1 or 2, characterized in that: The button is provided with a sealing sleeve which is sealed with the housing.