Key switch

Abstract

The utility model discloses a key switch, which relates to the technical field of key switches and comprises a main body structure, a rubber cover and a rubber seat, the rubber cover and the rubber seat are arranged in the main body structure and are mutually clamped and assembled, the middle part of the rubber seat is connected with a pressing assembly through a spring, and a key reciprocates between the rubber seat and the rubber cover through the spring. A terminal assembly, a first terminal and a second terminal are arranged on the two sides of the rubber base, the second terminal is riveted to the fixing plate, a height difference exists between the second terminal and the first terminal, a movable piece is installed at the lower end of the key, the movable piece abuts against the fixing plate and the first terminal, the movable piece slides downwards to abut against the first terminal and the second terminal at the same time, and the key switch enters a normally-closed state. The design of limiting steps of the rubber cover and the rubber base and the lock catch structure of the side plate form multiple clamping fixation, so that the assembly is prevented from loosening or falling off, and the stability of the whole structure is enhanced; the terminal assembly is integrally formed and bent, and is combined with height difference layout, so that the stability of electrical connection is optimized, and the risk of poor contact is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of key switch, concretely is a kind of key switch. BACKGROUND

[0002] As a common electronic component, key switch is widely used in various electronic devices, and its core function is to realize the on-off control of circuit through mechanical contact. The traditional key switch is usually composed of a shell, a pressing assembly, a terminal and a conductive part, but there are still many problems in practical application. For example, the assembly structure of the existing switch cover and the rubber base is relatively simple, and lacks effective limiting and reinforcing design, which can cause parts to loosen due to stress deformation or vibration after long-term use, affecting the contact stability. At the same time, the terminal assembly is usually designed in a split type, which has complex assembly process and large contact resistance, resulting in reduced conductivity efficiency. In addition, the selection of traditional moving piece material (such as ordinary metal) is prone to elastic fatigue or oxidation due to frequent pressing, which shortens the service life of the switch.

[0003] In the prior art, some improved switches try to improve stability by optimizing spring structure or adding auxiliary fixing parts, but such solutions often lead to complex structure and increased production cost. For example, although the use of multi-stage buckles or independent limiting parts can improve assembly stability, it reduces assembly efficiency. The split terminal design is convenient for maintenance, but the precision requirement of riveting or welding process is high, and contact failure is easily caused by assembly error. In addition, the contact mode between the moving piece and the terminal is usually single-plane contact, which is prone to wear or deviation under frequent pressing, resulting in unresponsive on-off response, and even false triggering problem. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a kind of key switch to solve the problems raised in the above background.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a kind of key switch, including main body structure and the rubber cover and rubber base that are set to the inside of the main body structure and are mutually jointed assembly, the middle part of the rubber base is connected with pressing assembly by spring, the pressing assembly includes key, the key makes reciprocating motion between rubber cover and rubber base by spring, the rubber base both sides are provided with terminal assembly, including terminal one and terminal two, wherein terminal two is riveted in fixed plate and the height difference between terminal two and terminal one, the lower end of the key is equipped with a moving piece, the moving piece is respectively abutted with fixed plate and terminal one, and the key switch enters normal closed state when the moving piece slides down and abuts with terminal one and terminal two at the same time.

[0006] Preferably, the glue cover is provided with an overlapping area on both sides, a step is arranged in the overlapping area, the step forms a limiting relationship between the glue cover and the glue seat, a lock catch one is further arranged in the overlapping area to enhance the clamping effect of the glue cover and the glue seat, and the glue cover is provided with an embedding groove for accommodating the terminal assembly.

[0007] Preferably, the terminal assembly is integrally formed and is provided with a bending corner on one side, the lower end of the bending corner is a pin of the terminal, and the moving piece is made of stainless steel.

[0008] Preferably, the glue cover is internally provided with a cavity for accommodating the pressing assembly, sliding grooves one for allowing the moving piece to move are arranged on both sides of the cavity, sliding grooves two for assembling the terminal assembly are arranged on the outer sides of the sliding grooves one, and the sliding grooves two and the embedding groove are integrally arranged in an L-shaped structure.

[0009] Preferably, the glue seat is extended with a side plate, a groove for clamping the lock catch one of the glue cover is arranged on the side plate, and a lock catch two for clamping the main body structure is arranged below the groove.

[0010] Compared with the prior art, the utility model has the beneficial effects that: through the limiting step design of the glue cover and the glue seat and the side plate lock catch structure, multiple clamping and fixing are formed, the assembly is effectively prevented from loosening or falling off, the stability of the overall structure is enhanced, the terminal assembly is integrally formed and is designed to be bent, the height difference layout is combined, the stability of electrical connection is optimized, and the risk of poor contact is reduced, the stainless steel moving piece has high elasticity and wear resistance, the accuracy and durability of the contact terminal in the reciprocating motion of the key are ensured, and the service life is prolonged.

[0011] The spring-driven pressing assembly is matched with the moving piece sliding groove to realize linear control of the key stroke and improve the consistency of the pressing feeling, and the synchronous contact design of the moving piece and the terminal one and the terminal two ensures that the switching in the normally closed state is sensitive and reliable and reduces the risk of false touch or contact delay. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the embodiment;

[0013] Figure 2 It is a schematic diagram of the internal structure of the embodiment Figure One ;

[0014] Figure 3 It is an exploded view of the embodiment;

[0015] Figure 4 It is a schematic diagram of the glue cover structure of the embodiment;

[0016] Figure 5 It is a schematic diagram of the internal structure of the embodiment Figure Two ;

[0017] Figure 6It is the assembly structure diagram of the key, the moving piece, the fixed plate and the terminal assembly of the embodiment.

[0018] In the figure:

[0019] 10, main body structure; 101, assembly groove; 20, pressing assembly; 201, key; 202, spring; 30, terminal assembly; 301, pin; 302, terminal one; 303, terminal two; 40, glue cover; 401, embedded groove; 402, overlapping area; 403, lock one; 404, sliding groove one; 405, sliding groove two; 50, glue seat; 501, lock two; 502, groove; 60, moving piece; 70, fixed plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Please refer to Figures 1-6 A key switch, comprising a main body structure 10 and a glue cover 40 and a glue seat 50 arranged in the main body structure 10 and mutually clamped and assembled, the middle part of the glue seat 50 is connected with a pressing assembly 20 through a spring 202, the pressing assembly 20 comprises a key 201, the key 201 reciprocates between the glue seat 50 and the glue cover 40 through the spring 202, the glue seat 50 is provided with a terminal assembly 30 on both sides, comprising a terminal one 302 and a terminal two 303, wherein the terminal two 303 is riveted to a fixed plate 70 and has a height difference between the terminal two 303 and the terminal one 302, the lower end of the key 201 is provided with a moving piece 60, the moving piece 60 respectively abuts against the fixed plate 70 and the terminal one 302, the key 201 switch enters a normally closed state when the moving piece 60 slides downward to abut against the terminal one 302 and the terminal two 303 at the same time, the key 201 switch is in a normally open state, i.e. in a disconnected state, in an initial state, when the key 201 is pressed, the moving piece 60 moves downward, the distance that the moving piece 60 moves from the fixed plate 70 to between the terminal two 303 is the stroke of the key 201 switch from a normally open state to a normally closed state, the stroke is about 1mm, in combination with the height difference layout, the stability of electrical connection is optimized, and the risk of poor contact is reduced; the stainless steel moving piece 60 has high elasticity and wear resistance, which ensures the accuracy and durability of the key 201 in reciprocating motion to contact the terminal, and prolongs the service life.

[0022] Specifically, the glue cover 40 is provided with an overlapping area 402 on both sides, a step is arranged in the overlapping area 402, the step forms a limiting relationship between the glue cover 40 and the glue seat 50, a lock buckle 403 is further arranged in the overlapping area 402 to enhance the clamping effect of the glue cover 40 and the glue seat 50, the glue cover 40 is further provided with an embedding groove 401 for accommodating the terminal assembly 30, the step structure of the overlapping area 402 forms mechanical limiting, which can effectively prevent displacement deviation of the glue cover 40 and the glue seat 50 during assembly, improve assembly precision, reduce installation error rate, and is especially suitable for automatic assembly scene, the double locking mechanism of the lock buckle 403 forms a redundant design to meet high vibration conditions, the step limiting and the lock buckle form a modular interface, which can be disassembled without damage through a special tool during maintenance.

[0023] Specifically, the terminal assembly 30 is integrally formed and one side is formed with a bending angle through bending, the lower end of the bending angle is a pin 301 of the terminal, the moving piece 60 is made of stainless steel material, the terminal assembly 30 adopts an integral forming technology to reduce the number of components and assembly steps, reduce production complexity, significantly improve production efficiency, and save material cost, the bending angle and the pin 301 are formed through bending, which saves additional connecting parts, avoids welding or riveting process, and simplifies the manufacturing process.

[0024] Specifically, the glue cover 40 is internally provided with a cavity for accommodating the pressing assembly 20, sliding grooves 404 are arranged on both sides of the cavity for movement of the moving piece 60, sliding grooves 405 are arranged on the outer side of the sliding grooves 404 for assembly of the terminal assembly 30, the sliding grooves 405 and the embedding groove 401 are integrally arranged in an “L” shape, by arranging the cavity for accommodating the pressing assembly 20 in the glue cover 40 and arranging the sliding grooves 404 on both sides of the cavity for movement of the moving piece 60, a stable and flexible movement path of the moving piece 60 is realized. In addition, the outer side of the sliding grooves 404 is further provided with the sliding grooves 405 for assembly of the terminal assembly 30, which not only facilitates installation and positioning of the terminal assembly 30, but also makes the whole structure more compact and orderly by combining with the sliding grooves 404. The sliding grooves 405 and the embedding groove 401 are integrally arranged in an “L” shape, which enhances the stability of the structure, optimizes the layout space of the internal components, and improves the integration and practicability of the overall design.

[0025] Specifically, the glue seat 50 extends with a side plate, a groove 502 for the locking buckle one 403 of the glue cover 40 is opened on the side plate, the locking buckle two 501 for the carding with the main body structure 10 is arranged below the groove 502, the stability and the support of the overall structure are increased by the design that the side plate is extended out of the glue seat 50, the groove 502 opened on the side plate is specially used for the carding of the locking buckle one 403 of the glue cover 40, the fixing process of the glue cover 40 is simplified by this design, the glue cover 40 can be firmly installed on the glue seat 50, is not easy to fall off or looseness, the locking buckle two 501 arranged below the groove 502 is carded with the main body structure 10, further simplifies the installation process.User can easily complete the installation without complex operation steps, improve the convenience of use.

[0026] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims.

Claims

1. A key switch characterized in that: It comprises a main body structure, a glue cover and a glue seat which are assembled with each other by clamping inside the main body structure, a pressing assembly is connected with the glue seat through a spring in the middle of the glue seat, the pressing assembly comprises a key, the key makes reciprocating motion between the glue seat and the glue cover through a spring, terminal assemblies are arranged on both sides of the glue seat, comprising a terminal one and a terminal two, wherein the terminal two is riveted to a fixed plate and has a height difference with the terminal one, a moving piece is arranged at the lower end of the key, the moving piece abuts against the fixed plate and the terminal one respectively, the key switch enters a normally closed state when the moving piece slides down to abut against the terminal one and the terminal two at the same time.

2. The key switch according to claim 1, characterized by: Overlapping areas are arranged on both sides of the glue cover, a step is arranged in the overlapping areas, the step forms a limiting relationship between the glue cover and the glue seat, a lock one which strengthens the clamping effect of the glue cover and the glue seat is further arranged in the overlapping areas, the glue cover is further provided with an embedding groove for accommodating the terminal assembly.

3. The key switch according to claim 1, characterized by: The terminal assembly is integrally formed and one side is formed with a bending angle through bending, the needle of the terminal is arranged at the lower end of the bending angle, the moving piece is made of stainless steel material.

4. The key switch according to claim 2, wherein: A cavity for accommodating the pressing assembly is arranged inside the glue cover, sliding grooves one are arranged on both sides of the cavity for the movement of the moving piece, sliding grooves two for assembling the terminal assembly are arranged outside the sliding grooves one, the sliding grooves two and the embedding groove are integrally arranged in an "L" shape structure.

5. The key switch according to claim 1, wherein: The glue seat extends a side plate, a groove for clamping the lock one of the glue cover is arranged on the side plate, a lock two for clamping the main body structure is arranged below the groove.

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