Convenient-to-assemble button switch

Abstract

The utility model discloses a button switch convenient to assemble, relates to the field of switches, and solves the problem of difficult assembly. A cap cylinder and a movable contact piece are installed below the rotor, the movable contact piece is made of an elastic metal material, the movable contact piece is fixedly connected with the cap cylinder, the jacking spring is installed between the cap cylinder and the base, the cap cylinder abuts against the interior of the rotor, and the rotor can float up and down to drive the movable contact piece to make elastic contact with the static contact piece when the state of the rotor is switched. The movable contact piece and the cap cylinder are integrated into a single assembly, elements of an original pressure spring are reduced, and the elastic performance of the movable contact piece is utilized, so that the number of parts is effectively reduced, the assembly steps are simplified, and the production cost and the assembly complexity are reduced; the movable contact piece is made of an elastic metal material, and the design that the movable contact piece is fixedly connected with the cap cylinder ensures that tight and reliable contact pressure can be realized between the movable contact piece and the static contact piece when the rotor floats up and down, so that good electric contact performance can still be kept even after long-term use and repeated pressing, and the service life of the switch is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of switches, in particular to a push button switch which is easy to assemble. Background Art

[0002] A push button switch is a switch that is used to connect and disconnect a small current circuit and is activated when pressed and reset when released. It is widely used. The push button switch of the existing structure generally relies on the upper shell and the lower shell to form a housing assembly, the button and the push rod to form a driving part, the pin and the shaft to form a conductive part, and is equipped with a spring. Taking CN201185146Y, a Chinese utility model patent for a push button self-locking switch, as an example, it discloses that a pressure spring is arranged on the outer periphery of a hollow brass shaft column, and the force effect of the pressure spring causes the metal center contact disc (moving contact piece) to fit closely with the corresponding metal contact terminal (static contact piece), thereby ensuring excellent conductive performance. However, this method requires the coordinated use of three independent components, namely, the pressure spring, the hollow brass shaft column, and the metal center contact disc, and each component needs to be installed separately. This multi-component structural design undoubtedly increases the complexity and cost of manufacturing and assembly. In particular, the assembly of the pressure spring is located at the assembly boundary between the housing part and the base part, and it is easy to fall off during the assembly process. Improper assembly may lead to uneven product quality. Summary of the invention

[0003] Purpose of the utility model: In order to overcome the defects of the prior art, the utility model provides a push button switch which is easy to assemble and solves the problem of difficult assembly.

[0004] The technical solution of the utility model includes a base, an upper spring, a rotor and a static contact piece. A cap barrel and a moving contact piece are installed below the rotor. The moving contact piece is made of an elastic metal material. The moving contact piece is fixedly connected to the cap barrel. The upper spring is installed between the cap barrel and the base. The cap barrel is pressed against the inside of the rotor. The rotor can float up and down when switching states to drive the moving contact piece to elastically contact the static contact piece.

[0005] By adopting the above technical solution, the moving contact piece and the cap barrel are integrated into a single component, and the original pressure spring components are reduced. Instead, the elastic properties of the moving contact piece are utilized, the number of parts is effectively reduced, the assembly steps are simplified, the production cost and assembly complexity are reduced, and assembly problems such as the pressure spring falling off are avoided, and the failure rate caused by improper assembly is reduced; the moving contact piece is made of elastic metal material, and the design of fixed connection with the cap barrel ensures that when the rotor floats up and down, the moving contact piece and the static contact piece can achieve close and reliable contact pressure, and even after long-term use and multiple presses, it can still maintain good electrical contact performance, thereby extending the service life of the switch.

[0006] In one possible design, the bottom of the hat tube has a brim, and a clamping block is arranged above the brim. The clamping block and the brim are arranged at an interval. A center hole is opened at the center position of the moving contact piece. The moving contact piece is sleeved on the outer periphery of the hat tube through the center hole and is placed between the clamping block and the brim.

[0007] With the above design, the brim at the bottom of the hat barrel and the clamping block above together constitute a stable structure for fixing the moving contact piece. The spaced arrangement of the brim and the clamping block forms a double clamping of the moving contact piece, thereby enhancing the fixing stability of the moving contact piece on the hat barrel. The moving contact piece is directly sleeved on the outer periphery of the hat barrel through the center hole and is clamped and fixed by the brim and the clamping block, thereby simplifying the assembly steps of the moving contact piece, eliminating the need for additional fasteners or complex assembly tools, and improving assembly efficiency. A constant and appropriate contact pressure can be maintained between the moving contact piece and the static contact piece, thereby ensuring low resistance and high reliability when the circuit is connected, and improving the stability of the electrical connection.

[0008] In a possible design, the cross section of the moving contact piece is an arched structure that arches toward the rotor.

[0009] With the above design, the arched structure can enhance the natural elastic performance of the moving contact piece, ensure that the contact between the moving contact piece and the static contact piece is closer, alleviate the elastic fatigue problem of the moving contact piece, reduce the poor contact phenomenon caused by elastic attenuation, and enable the moving contact piece to maintain a longer-lasting elastic force.

[0010] In one possible design, the moving contact piece is made of beryllium copper material.

[0011] With the above design, beryllium bronze is an alloy material with high elastic limit and good elastic recovery, which means that the moving contact piece can maintain good elasticity even under long-term, high-frequency pressing operations and is not prone to permanent deformation, ensuring stable contact of the contacts and extending the service life of the switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the switch of the utility model in the closed state;

[0013] Figure 2 This is a structural schematic diagram of the switch of the utility model in the open state;

[0014] Figure 3 It is an exploded view of a specific embodiment of the utility model;

[0015] Among them, 1. base; 2. top spring; 3. rotor; 4. static contact piece; 5. cap tube; 6. moving contact piece; 51. brim; 52. clamping block; 61. center hole. DETAILED DESCRIPTION

[0016] like Figure 1-3The push button switch shown is easy to assemble, including a base 1, a top spring 2, a rotor 3 and a static contact piece 4. A cap barrel 5 and a moving contact piece 6 are installed below the rotor 3. The moving contact piece 6 is made of elastic metal material. The moving contact piece 6 is fixedly connected to the cap barrel 5. The cap barrel 5 is a cylindrical shape with a closed top and an open bottom. The top spring 2 is installed between the cap barrel 5 and the base 1. One end of the top spring 2 presses inside the cap barrel 5, and the other end presses on the base 1. The cap barrel 5 presses inside the rotor 3. The rotor 3 floats up and down when switching the pressing state. Due to the action of the top spring 2, the cap barrel 5 floats with the rotor 3, thereby driving the moving contact piece 6 to descend and elastically contact the static contact piece 4 or to rise and return to a position to break away from the contact with the static contact piece 4. In fact, the moving contact piece 6 and the cap barrel 5 are integrated into a single component, which is assembled on the base 1, and the original pressure spring components are reduced, the number of parts and assembly links are reduced, and the assembly error rate is reduced. At the same time, it is beneficial to reduce the volume of the switch, optimize the internal space layout, and make the product design more compact. The moving contact piece 6 is made of elastic metal material, which can achieve close contact with the stationary contact piece 4 to ensure good electrical contact performance. Silver dots are installed on both the moving contact piece 6 and the stationary contact piece 4 to improve the electrical contact performance.

[0017] The bottom of the cap barrel 5 has an annular brim 51, and a wedge-shaped clamping block 52 is arranged above the brim 51. The clamping block 52 is small at the top and large at the bottom. There is a gap of the thickness of the movable contact piece 6 between the clamping block 52 and the brim 51. A center hole 61 is opened at the center position of the movable contact piece 6. The movable contact piece 6 is covered on the outer periphery of the cap barrel 5 through the center hole 61 and is placed between the clamping block 52 and the brim 51. During assembly, the cap barrel 5 is inserted into the center hole 61 from top to bottom. By utilizing the elasticity of the movable contact piece 6 and the shape of the clamping block 52, the center hole 61 is passed over the clamping block 52 and entered into the gap, so that the movable contact piece 6 is limitedly clamped between the clamping block 52 and the brim 51, thereby forming a component. In this way, the assembly is simplified, and the stability and accurate positioning of the component are ensured through the close cooperation of the brim 51, the wedge-shaped clamping block 52 and the movable contact piece 6, while improving the assembly efficiency and stability in use. The elastic installation of the moving contact piece 6 simplifies maintenance and optimizes electrical contact, thereby improving the reliability and practicality of the switch as a whole.

[0018] The cross section of the moving contact piece 6 is an arched structure that arches toward the rotor 3, that is, it arches slightly upward as shown in the figure. The moving contact piece 6 with an arched structure helps to enhance elasticity, promote close contact point contact, effectively relieve elastic fatigue, reduce poor contact, ensure long-term elasticity, and improve switch performance and life.

[0019] The moving contact piece 6 is made of beryllium bronze material, which takes advantage of the excellent elasticity, good electrical conductivity, and high fatigue resistance of beryllium bronze material, so that the moving contact piece 6 maintains good elasticity and ensures stable contact with the stationary contact piece 4.

Claims

1. A push button switch that is easy to assemble, comprising a base (1), an upper spring (2), a rotor (3) and a stationary contact piece (4), characterized in that: A cap barrel (5) and a moving contact piece (6) are installed below the rotor (3); the moving contact piece (6) is made of an elastic metal material; the moving contact piece (6) is fixedly connected to the cap barrel (5); the upper spring (2) is installed between the cap barrel (5) and the base (1); the cap barrel (5) is pressed against the inside of the rotor (3); and the rotor (3) can float up and down when switching states to drive the moving contact piece (6) to elastically contact the static contact piece (4).

2. The push button switch that is easy to assemble according to claim 1, characterized in that: The bottom of the hat barrel (5) is provided with a brim (51), a clamping block (52) is arranged above the brim (51), the clamping block (52) and the brim (51) are arranged at a distance, a center hole (61) is opened at the center position of the movable contact piece (6), and the movable contact piece (6) is sleeved on the outer periphery of the hat barrel (5) through the center hole (61) and is placed between the clamping block (52) and the brim (51).

3. The push button switch that is easy to assemble according to claim 1 or 2, characterized in that: The cross section of the moving contact piece (6) is an arched structure that arches in the direction of the rotor (3).

4. The push button switch that is easy to assemble according to claim 1 or 2, characterized in that: The moving contact piece (6) is made of beryllium bronze material.

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