CN212113516U

CN212113516U - Hollow micro switch

Info

Publication number: CN212113516U
Application number: CN202020831616.4U
Authority: CN
Inventors: 杨永龙; 鲁涛; 龙全明
Original assignee: Zhejiang Jialong Electronic Co ltd
Current assignee: Zhejiang Jialong Electronic Co ltd
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2020-12-08
Anticipated expiration: 2030-05-18

Abstract

The utility model discloses a hollow micro-gap switch solves the numerous and diverse, the unstable scheduling problem of structure of current micro-gap switch circuit. Including button, casing, base and actuating mechanism, the button activity sets up on the casing, the casing is fixed to be set up on the base, still be fixed with normally open contact, normally closed contact and support contact on the base, set up the well cavity that supplies the external circuit to pass between button to the base, well cavity sets up along the activity direction of button, the periphery of well cavity forms the encircleing inner chamber between button and the base, actuating mechanism sets up in encircleing the inner chamber. The cavity is connected in the circuit accessible, need not to bypass micro-gap switch, and button and base can also retrain the circuit spacing, effectively solve the numerous and diverse problem of near micro-gap switch circuit, and circuit layout can be more standard.

Description

Hollow micro switch

Technical Field

The utility model belongs to the technical field of the switch and specifically relates to a hollow micro-gap switch.

Background

At present, micro switches are widely applied to the fields of electronic equipment, instruments, mines, power systems, household appliances, electrical equipment and the like, and the principle of the micro switches is that external mechanical force acts on an action reed through a transmission element (a press pin, a button, a lever, a roller and the like), and when the action reed is displaced to a critical point, instantaneous action is generated, so that a movable contact at the tail end of the action reed is quickly connected with or disconnected from a fixed contact. The wiring end and the button end of micro-gap switch are usually at different both ends, and general wiring end is located the bottom, and the button end is located the top, and under some circumstances, external connection need be walked around micro-gap switch from the wiring end of bottom and connect the position above the micro-gap switch, and the wiring connected mode is so walked around and is easily caused the circuit to be complicated, still need additionally to process if set up fixed circuit part externally, has increased the processing cost undoubtedly. In addition, the stability of the target action realized through the reed structure is poor, the service life of the reed is short due to the influence of factors such as reed material, heat treatment process and punch forming, and the reed is greatly deformed after being used for a long time and is difficult to restore to the original state.

Disclosure of Invention

The utility model aims at: in order to overcome the defects of the prior art, the utility model provides a hollow micro-gap switch solves the problems that the existing micro-gap switch circuit is complicated, the structure is unstable and the like.

The technical scheme of the utility model: including button, casing, base and actuating mechanism, the button activity sets up on the casing, the casing is fixed to be set up on the base, still be fixed with normally open contact, normally closed contact and support contact on the base, set up the well cavity that supplies the external circuit to pass between button to the base, well cavity sets up along the activity direction of button, the periphery of well cavity forms the encircleing inner chamber between button and the base, actuating mechanism sets up in encircleing the inner chamber.

By adopting the technical scheme, the hollow cavities in the circuit can be connected without bypassing the micro switch, the button and the base can also restrict the circuit to be limited, the problem of complexity of the circuit near the micro switch is effectively solved, and the circuit layout can be more standard.

The utility model discloses a further setting: guide rail matching structures are respectively arranged on the opposite sides of the surrounding inner cavity, wherein the guide rail matching structure on one side is a single guide rail structure, and the guide rail matching structure on the other side is a double guide rail structure; the single guide rail structure comprises a T-shaped guide rail strip positioned on the base and a T-shaped sliding groove strip positioned on the button, and a first return spring and a second return spring are respectively arranged on two sides of the single guide rail structure; the double-strip guide rail structure comprises a double-strip with two side rails and a double-groove strip with two sliding grooves, the double-strip and the double-groove strip are respectively positioned on the button and the base, and third return springs are arranged in the middle positions of the double-strip and the double-groove strip; and two ends of the first return spring, the second return spring and the third return spring are respectively abutted against the button and the base.

By adopting the further arrangement, the button is more stably pressed, the pressing action is more balanced, and the phenomenon of jamming or deflection is not easy to occur.

The utility model discloses a further setting again: the area of the hollow cavity of the button is gradually reduced from the opening of the hollow cavity inwards.

Adopt above-mentioned further setting again, the circuit penetrates more smoothly in the cavity, reduces and encircles the inside contact of inner chamber.

The utility model discloses a still further set up: action mechanism is including extension spring, movable contact spring, swing arm and support arm, movable contact spring and swing arm are located the front and back side of support arm respectively, V-arrangement fulcrum groove and back V-arrangement fulcrum groove before having seted up on the support arm, movable contact spring, swing arm activity respectively are pegged graft in preceding V-arrangement fulcrum groove, back V-arrangement fulcrum groove duplex winding corresponding fulcrum swing that forms, extension spring one end hook joint is on the movable contact spring, and the other end hook joint is on the swing arm, the swing arm counterbalance with extension spring one end when the button is pressed, the movable contact spring is located between normally open contact and the normally closed contact, the support arm with support contact body coupling.

Adopt above-mentioned still further setting, after the swing arm is pressed to the button, the position of movable contact can take place to remove, movable contact and normally open contact or normally closed contact to realize the switching function of switch, utilize the elasticity of extension spring to come change over switch's action, because the deflection is little, stress is little, makes the fatigue of extension spring not too big, and the extension spring uses the deformation to diminish for a long time, and the stability of structure is higher, the life extension.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a top view of an embodiment of the present invention;

FIG. 3 is a cross-sectional view of an embodiment of the present invention;

fig. 4 is a schematic structural view of the hidden casing of the present invention;

the button comprises a button 1, a shell 2, a base 3, an action mechanism 4, a normally open contact 51, a normally closed contact 52, a support contact 53, a hollow cavity 61, a surrounding inner cavity 62, a single guide rail structure 7, a double guide rail structure 8, a T-shaped guide rail strip 71, a T-shaped sliding groove strip 72, a first reset spring 73, a second reset spring 74, a double guide rail strip 81, a double groove strip 82, a third reset spring 83, a tension spring 41, a movable contact 42, a swing arm 43, a support arm 44, a front V-shaped support point groove 441 and a rear V-shaped support point groove 442.

Detailed Description

As shown in fig. 1-3, a hollow micro switch includes a button 1, a housing 2, a base 3 and an actuating mechanism 4, the button 1 is movably disposed on the housing 2, the housing 2 is fixedly disposed on the base 3, the base 3 is further fixed with a normally open contact 51, a normally closed contact 52 and a support contact 53, a hollow cavity 61 for external lines to pass is disposed between the button 1 and the base 3, the hollow cavity 61 is disposed along a moving direction of the button 1, a surrounding inner cavity 62 between the button 1 and the base 3 is formed at the periphery of the hollow cavity 61, and the actuating mechanism 4 is disposed in the surrounding inner cavity 62. The lines connecting the normally open contact 51, the normally closed contact 52 and the supporting contact 53 can pass through the hollow cavity 61, even some external lines can pass through the hollow cavity, a passage for the lines to pass through is provided, the passing lines are restrained, and the line layout is simpler and clearer.

As shown in fig. 3 and 4, the opposite directions around the inner cavity 62 are respectively provided with a guide rail engaging structure, that is, two guide rail engaging structures are respectively arranged on the left and right sides, which can make the pressing action more balanced and avoid the jamming phenomenon. Wherein the guide rail cooperation structure of one side is list guide rail structure 7, and the guide rail cooperation structure of opposite side is two guide rail structure 8, and list guide rail structure 7 has that the axial spacing nature is good, but button 1 presses the characteristics of easy skew, and two guide rail structure 8 have the balanced advantage of sliding, and both have the setting and can balance both advantages and disadvantages to make the great button 1 in cross-section press, reset more smoothly steady. The single guide rail structure 7 comprises a T-shaped guide rail bar 71 positioned on the base 3 and a T-shaped sliding groove bar 72 positioned on the button 1, and a first return spring 73 and a second return spring 74 are respectively arranged at two sides of the single guide rail structure 7; the double-bar guide rail structure 8 comprises a double-rail 81 with two side rails and a double-groove 82 with two sliding grooves, the double-rail 81 and the double-groove 82 are respectively positioned on the button 1 and the base 3, and third return springs 83 are arranged in the middle positions of the double-rail 81 and the double-groove 82; two ends of the first return spring 71, the second return spring 72 and the third return spring 83 are respectively abutted against the button 1 and the base 3. It can be known from the above that, the surrounding inner cavity 62 has the single guide rail structure 7 and two return springs on one side thereof, and the double guide rail structure 8 and the third return spring 83 located in the middle on the other side thereof, so that the two sides can form an integral acting surface around the inner cavity 62, the button 1 can be pressed down stably at any position, the pressing effect of four-level and eight-level stability can be achieved, and the phenomenon of jamming or deflection is not easy to occur.

As shown in fig. 1 and 2, the area of the hollow cavity 61 of the button 1 is gradually reduced from the opening of the hollow cavity 61, and the button 1 is in a hopper shape, so as to facilitate the insertion of a line.

As shown in fig. 3 and 4, the actuating mechanism 4 includes a tension spring 41, a movable contact 42, a swing arm 43 and a support arm 44, the movable contact 42 and the swing arm 43 are respectively located at the front and rear sides of the support arm 44, the support arm 44 is provided with a front V-shaped support groove 441 and a rear V-shaped support groove 442, the movable contact 42 and the swing arm 43 are respectively movably inserted into the front V-shaped support groove 441 and the rear V-shaped support groove 442 and swing around a correspondingly formed support point, one end of the tension spring 41 is hooked on the movable contact 42, the other end is hooked on the swing arm 43, the push button 1 abuts against the swing arm 43 at one end of the tension spring 41 when being pressed, the movable contact 42 is located between a normally open contact 51 and a normally closed contact 52, and the support arm 44 is integrally. Taking the case that the normally open contact 51 is located above the movable contact 42 and the normally closed contact 53 is located below the movable contact 42 as an example, the movable contact 42 is firstly contacted and conducted with the normally open contact, after the button 1 presses the swing arm 43, the swing arm 43 swings downwards around the fulcrum contacted with the front V-shaped fulcrum groove 441, the tension spring 41 deforms, the stress direction of the movable contact 42 is changed from the upward direction of the rear V-shaped fulcrum groove 442 to the downward direction, then the position of the movable contact 42 swings, and the movable contact 42 is contacted and conducted with the normally closed contact, so that the switching function of the switch is realized.

Claims

1. The utility model provides a hollow micro-gap switch, is including button, casing, base and actuating mechanism, the button activity sets up on the casing, the casing is fixed to be set up on the base, still be fixed with normally open contact, normally closed contact and support contact, its characterized in that on the base: the button is characterized in that a hollow cavity for external circuits to pass through is formed between the button and the base, the hollow cavity is arranged along the moving direction of the button, a surrounding inner cavity is formed between the button and the base at the periphery of the hollow cavity, and the action mechanism is arranged in the surrounding inner cavity.

2. The hollow microswitch of claim 1, wherein: guide rail matching structures are respectively arranged in opposite side directions of the surrounding inner cavity, wherein the guide rail matching structure on one side is a single guide rail structure, and the guide rail matching structure on the other side is a double guide rail structure; the single guide rail structure comprises a T-shaped guide rail strip positioned on the base and a T-shaped sliding groove strip positioned on the button, and a first return spring and a second return spring are respectively arranged on two sides of the single guide rail structure; the double-strip guide rail structure comprises a double-strip with two side rails and a double-groove strip with two sliding grooves, the double-strip and the double-groove strip are respectively positioned on the button and the base, and third return springs are arranged in the middle positions of the double-strip and the double-groove strip; and two ends of the first return spring, the second return spring and the third return spring are respectively abutted against the button and the base.

3. The hollow microswitch of claim 1 or 2, wherein: the area of the hollow cavity of the button is gradually reduced from the opening of the hollow cavity inwards.

4. The hollow microswitch of claim 1 or 2, wherein: action mechanism is including extension spring, movable contact spring, swing arm and support arm, movable contact spring and swing arm are located the front and back side of support arm respectively, V-arrangement fulcrum groove and back V-arrangement fulcrum groove before having seted up on the support arm, movable contact spring, swing arm activity respectively are pegged graft in preceding V-arrangement fulcrum groove, back V-arrangement fulcrum groove and the corresponding fulcrum swing that forms of duplex winding, extension spring one end hook joint is on the movable contact spring, and the other end hook joint is on the swing arm, the swing arm with extension spring one end offsets when the button is pressed, the movable contact spring is located between normally open contact and the normally closed contact, the support arm with support contact body coupling.