Momentary action push button switch

Abstract

The present disclosure provides a push button switch with instantaneous action, which includes a base body, an upper cover, and a push shaft, one end of the push shaft is arranged in a box body formed by the base body and the upper cover, and the other end extends out of the box body, and a return spring is arranged at one end of the push shaft arranged in the box body; a moving contact slider connected to the push shaft is arranged on one side of the push shaft, and cavities are arranged on both sides of the moving contact slider, and a moving contact assembly is arranged in the cavity; a static contact foot assembly matched with the moving contact assembly is arranged on the base body. The dustproof push button switch disclosed in the present disclosure has an instantaneous action structure, so that the contact pressure of the contact point is relatively large when the switch is just turned on, and when a large current passes through the switch, it will not cause the silver contacts of the switch to stick, so that the switch can be quickly disconnected.

Description

Technical Field

[0001] The present disclosure relates to a push button switch, and in particular to a momentary action push button switch. Background Art

[0002] The functions of such push button switches currently on the market are basically similar, but they have the following functional defects:

[0003] 1. Commonly used push button switches of this type are generally seesaw structures. The switch on and off actions are not instantaneous. Therefore, the contact pressure is small when the switch is just turned on. If a large current passes through the switch at this time, it will cause the silver contacts of the switch to stick. In severe cases, the power tool cannot be disconnected. It does not meet the GB15092.1 standard and poses a major safety hazard to human life.

[0004] 2. Commonly used push button switches of this type are generally seesaw structures, which realize the switch on and off through the friction between the plastic ball and the copper moving contact. Every friction between the plastic ball and the copper moving contact will produce extremely fine copper powder. When the copper powder inside the switch reaches a certain amount, it will cause a short circuit between the two poles inside the switch. In severe cases, it will cause the power tool to burn or even cause a fire. It also does not meet the GB15092.1 standard and poses a major safety hazard to human life.

[0005] For this reason, it is imperative to design a push button switch with instantaneous action. Summary of the invention

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a push button switch with momentary action.

[0007] The present disclosure provides a momentary action push button switch, and its technical solution is:

[0008] It includes a base body, an upper cover, and a push shaft, one end of the push shaft is arranged in a box body formed by the base body and the upper cover, and the other end extends out of the box body, and a return spring is arranged at one end of the push shaft arranged in the box body;

[0009] A moving contact slider connected to the push shaft is disposed on one side of the push shaft, cavities are disposed on both sides of the moving contact slider, and a moving contact assembly is disposed in the cavity;

[0010] The base body is provided with a stationary contact foot assembly which cooperates with the moving contact assembly.

[0011] The instantaneous action push button switch provided by the present disclosure also includes the following technical solutions:

[0012] Wherein, a central axis component is arranged between the push shaft and the moving contact slider; one end of the central axis component is clamped on the push shaft, and the other end is clamped on the moving contact slider.

[0013] Wherein, the central axis assembly includes a central axis, a central axis spring installed on the central axis, and a first connecting rod and a second connecting rod arranged at both ends of the central axis;

[0014] Both ends of the central axis are provided with central axis grooves, a first clamping groove is provided on a side of the push shaft close to the moving contact slider, and a second clamping groove is provided on a side of the moving contact slider close to the push shaft;

[0015] The first connecting rod is arranged in the groove at one end of the central axis, and its two ends are clamped in the first clamping groove of the push shaft; the second connecting rod is arranged in the groove at the other end of the central axis, and its two ends are clamped in the second clamping groove of the moving contact slider.

[0016] Wherein, the central axis includes an inner central axis and an outer central axis;

[0017] The tail of the inner center axis is provided with a barb, the outer center axis is provided with a center axis through hole, a guide groove is provided in the center axis through hole, and the barb can be hooked in the guide groove so that the center axis spring is fixed between the inner center axis and the outer center axis.

[0018] Wherein, the moving contact assembly comprises a moving contact spring group, a moving contact group arranged on the top of the moving contact spring group, and a moving contact point group arranged on the top of the moving contact group;

[0019] The stationary contact foot assembly comprises an input stationary contact foot group and an output stationary contact foot group. Both the input stationary contact foot group and the output stationary contact foot group are provided with a stationary contact point group cooperating with the moving contact point group.

[0020] Wherein, a gasket group is also arranged at the bottom of the moving contact spring group, and a boss rib group is arranged on the base body;

[0021] When the switch is in an off state, the gasket group is pressed on the boss rib group, and the boss rib group supports the gasket group;

[0022] When the switch is turned on, the boss rib group applies an auxiliary upward thrust to the gasket group, so that the switch is quickly turned on.

[0023] Wherein, a first metal sliding sheet is arranged between the moving contact slider and the base body, a second metal sliding sheet is arranged between the push shaft and the base body, and the first metal sliding sheet and the second metal sliding sheet are both arranged on the base body;

[0024] The moving contact slider can slide up and down on the first metal sliding sheet, and the push shaft can slide up and down on the second metal sliding sheet.

[0025] Wherein, a base body groove group is arranged on the base body, and the input static contact foot group and the output static contact foot group are both installed on the base body groove group.

[0026] Wherein, a T-shaped groove group is arranged on the base body, and the bolt passes through the through hole on the input static contact foot group and cooperates with the nut arranged in the T-shaped groove group.

[0027] Wherein, a dust cover is arranged at one end of the push shaft extending out of the box body, a circular boss is arranged on the upper cover, and the dust cover is sleeved on the circular boss.

[0028] The implementation of this disclosure includes the following technical effects:

[0029] 1. The dustproof push button switch disclosed in the present invention has an instantaneous action structure, so that the contact pressure of the contacts is relatively large when the switch is just turned on. When a large current passes through the switch, the silver contacts of the switch will not stick, so that the switch can be quickly disconnected.

[0030] 2. The disclosed invention has a novel structure and a simple process, and is suitable for electric tools such as AC angle grinders, AC mold electric grinders, and DC rechargeable angle grinders, and complies with national safety standards.

[0031] 3. The present invention provides a first metal slide between the moving contact slider and the base body, and utilizes the high smoothness of the slide surface to convert the plastic-to-plastic friction between the moving contact slider and the plastic base body into the plastic-to-metal friction between the moving contact slider and the metal slide, so as to reduce the friction coefficient and increase the agility of the slider moving up and down; and provides a second metal slide between the push shaft and the base body to convert the metal-to-plastic friction between the push shaft and the plastic base body into the plastic-to-metal friction between the push shaft and the metal slide, and utilizes the high smoothness of the slide surface to further reduce the friction coefficient and increase the agility of the push shaft moving up and down. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A perspective view of a momentary action push button switch disclosed in the present invention;

[0033] Figure 2 for Figure 1 A partial cross-sectional view of

[0034] Figure 3 for Figure 1 A partial cross-sectional view of

[0035] Figure 4 It is a schematic diagram of the exploded structure of a momentary action push button switch disclosed in the present invention;

[0036] Figure 5 The present invention is a schematic diagram of an assembly structure of a moving contact slider assembly of a momentary action push button switch.

[0037] Figure 6 The present invention is a schematic diagram of an assembly structure of a push shaft and a moving contact slider assembly of a momentary action push button switch, which includes a central shaft assembly.

[0038] Figure 7 The present invention is a cross-sectional view of a momentary action push button switch in an off state.

[0039] Figure 8 The present invention is a cross-sectional view of a momentary action push button switch in an on state.

[0040] In the figure, 1-base body, 2-upper cover, 3-push shaft, 4-reset spring, 5-moving contact slider group, 6-moving contact assembly, 7-static contact foot assembly, 8-central shaft assembly, 9-first metal slide, 10-second metal slide, 11-bolt, 12-nut, 13-dust cover, 31-first slot, 51-cavity, 52-second slot, 61-moving contact spring group, 62-moving contact group, 63-moving contact group, 6 4-gasket group, 65-positioning column, 71-input static contact foot group, 72-output static contact foot group, 73-static contact point group, 81-central axis, 82-central axis spring, 83-first connecting rod, 84-second connecting rod, 811-central axis groove, 812-inner central axis, 813-outer central axis, 814-hook, 101-boss rib position group, 102-base body groove group, 103-T-shaped groove group, 201-circular boss. DETAILED DESCRIPTION

[0041] The present disclosure will be described in detail below in conjunction with the embodiments and drawings. It should be noted that the embodiments described are only intended to facilitate the understanding of the present disclosure and do not have any limiting effect on it. The directions described in this application, such as up, down, left, and right, are used for the convenience of describing with reference to the drawings and do not constitute a limitation on the scope of protection.

[0042] like Figure 1-6 As shown, the instantaneous action push button switch provided by the present disclosure comprises a base body 1, an upper cover 2, and a push shaft 3, one end of the push shaft 3 is arranged in a box body formed by the base body 1 and the upper cover 2, and the other end extends out of the box body, and a return spring 4 is arranged at one end of the push shaft 3 arranged in the box body;

[0043] A moving contact slider group 5 connected to the push shaft 3 is disposed on one side of the push shaft 3, and cavities 51 are disposed on both sides of the moving contact slider group 5, and a moving contact assembly 6 is disposed in the cavity 51;

[0044] The base body 1 is provided with a stationary contact foot assembly 7 that cooperates with the moving contact assembly 6 .

[0045] The dustproof push button switch disclosed in the present invention has an instantaneous action structure, so that the contact pressure of the contact point is relatively large when the switch is just turned on. When a large current passes through the switch, the silver contact of the switch will not stick, so that the switch can be quickly disconnected. In addition, the disclosed structure is novel and the process is simple. It is suitable for power tools such as AC angle grinders, AC mold electric grinders, and DC rechargeable angle grinders, and meets national safety standards.

[0046] In one embodiment, Figure 3 , 4 As shown in , 6 , a central axis assembly 8 is provided between the push shaft 3 and the moving contact slider group 5 ; one end of the central axis assembly 8 is clamped on the push shaft 3 , and the other end is clamped on the moving contact slider group 5 .

[0047] In one embodiment, Figure 4 , 6 As shown, the central axis assembly 8 includes a central axis 81, a central axis spring 82 mounted on the central axis 81, and a first connecting rod 83 and a second connecting rod 84 disposed at both ends of the central axis 81;

[0048] Both ends of the central axis 81 are provided with central axis grooves 811, a first clamping groove 31 is provided on the side of the push shaft 3 close to the moving contact slider group 5, and a second clamping groove 52 is provided on the side of the moving contact slider group 5 close to the push shaft 3;

[0049] The first connecting rod 83 is arranged in the groove 811 at one end of the central axis 81, and its two ends are clamped in the first clamping groove 31 of the push shaft 3; the second connecting rod 84 is arranged in the groove 811 at the other end of the central axis 81, and its two ends are clamped in the second clamping groove 52 of the moving contact slider group 5.

[0050] In one embodiment, Figure 4 , 6 As shown, the central axis 81 includes an inner central axis 812 and an outer central axis 813;

[0051] The tail of the inner center axis 812 is provided with a barb 814 , the outer center axis 813 is provided with a center axis through hole, the center axis through hole is provided with a guide groove, and the barb 814 can be hooked in the guide groove so that the center axis spring 82 is fixed between the inner center axis 812 and the outer center axis 813 .

[0052] In one embodiment, Figure 2-6 As shown, the moving contact assembly 6 includes a moving contact spring group 61, a moving contact group 62 arranged on the top of the moving contact spring group 61, and a moving contact point group 63 arranged on the top of the moving contact group 62;

[0053] The stationary contact foot assembly 7 includes an input stationary contact foot group 71 and an output stationary contact foot group 72 . Both the input stationary contact foot group 71 and the output stationary contact foot group 72 are provided with a stationary contact point group 73 that cooperates with the moving contact point group 63 .

[0054] In one embodiment, Figure 7 , 8 As shown, a gasket group 64 is also provided at the bottom of the moving contact spring group 61, and a boss rib group 101 is provided on the base body 1;

[0055] When the switch is in the off state, the gasket set 64 is pressed on the boss rib set 101, and the boss rib set 101 supports the gasket set 64;

[0056] When the switch is turned on, the boss rib group 101 applies an auxiliary upward thrust to the gasket group 64, so that the switch is turned on quickly.

[0057] In one embodiment, Figure 5 , 6 As shown, the cavities 51 on both sides of the moving contact slider group 5 are provided with positioning columns 65 , and the gasket group 64 and the moving contact spring group 61 are both mounted on the positioning columns 65 .

[0058] In one embodiment, Figure 2 , 4 As shown, a first metal slide sheet 9 is provided between the moving contact slider group 5 and the base body 1, and a second metal slide sheet 10 is provided between the push shaft 3 and the base body 1, and both the first metal slide sheet 9 and the second metal slide sheet 10 are provided on the base body 1;

[0059] The moving contact slider group 5 can slide up and down on the first metal sliding sheet 9 , and the push shaft 3 can slide up and down on the second metal sliding sheet 10 .

[0060] The present invention provides a first metal slide plate between the moving contact slider and the base body to convert the plastic-to-plastic friction between the moving contact slider and the plastic base body into the metal-to-metal friction between the moving contact slider and the metal slide plate, and utilizes the high smoothness of the slide plate surface to reduce the friction coefficient and increase the agility of the slider moving up and down; and provides a second metal slide plate between the push shaft and the base body to convert the plastic-to-plastic friction between the push shaft and the plastic base body into the plastic-to-metal friction between the push shaft and the metal slide plate, and similarly utilizes the high smoothness of the slide plate surface to further reduce the friction coefficient and increase the agility of the push shaft moving up and down.

[0061] It should be noted that the first metal sliding sheet and the second metal sliding sheet in this embodiment can both be made of stainless steel.

[0062] In one embodiment, Figure 4 As shown, the base body 1 is provided with a base body groove group 102 , and the input static contact pin group 71 and the output static contact pin group 72 are both installed on the base body groove group 102 .

[0063] In one embodiment, Figure 4 As shown, a T-shaped groove group 103 is provided on the base body 1 , and the bolt 11 passes through the through hole on the input static contact pin group 71 and cooperates with the nut 12 provided in the T-shaped groove group 103 .

[0064] In one embodiment, Figure 1 , 4 As shown, a dust cover 13 is provided at one end of the push shaft 3 extending out of the box body, a circular boss 201 is provided on the upper cover 2, and the dust cover 13 is sleeved on the circular boss 201.

[0065] The instantaneous action push button switch provided by the present invention has the following functional working process for realizing the on-off function:

[0066] When push shaft 3 is pressed, Figure 7 As shown, the push shaft 3 moves downward, thereby driving the central axis assembly 8 connected to the push shaft 3 to move downward. When it moves down to a certain extent - when the first connecting rod 83 and the second connecting rod 84 are at the same horizontal position, the central axis 81 flips upward under the action of the central axis spring 82, thereby driving the moving contact slider group 5 connected to the central axis assembly 8 to jump upward. The moving contact slider group 5 drives the moving contact group 62 arranged in the cavity 51 of the moving contact slider group 5 to move upward, thereby driving the moving contact group 63 arranged on the moving contact group 62 to combine with the static contact 711 on the static contact foot assembly 7, thereby realizing the switch-on function.

[0067] When the push shaft is released, Figure 8 As shown, the push shaft 3 moves upward under the reset of the reset spring 4, and the central axis 81 flips downward under the action of the central axis spring 82, thereby driving the moving contact slider group 5 connected to the central axis assembly 8 to jump downward, and the moving contact slider group 5 drives the moving contact group 62 arranged in the cavity 51 of the moving contact slider group 5 to move downward, thereby driving the moving contact group 63 arranged on the moving contact group 62 to disconnect from the static contact 711 on the static contact foot assembly 7, thereby realizing the disconnection function of the switch.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present disclosure, rather than to limit the protection scope of the present disclosure. Although the present disclosure has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present disclosure can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present disclosure.

Claims

1. A momentary action push button switch, comprising a base body, an upper cover, and a push shaft, wherein one end of the push shaft is arranged in a box body formed by the base body and the upper cover, and the other end extends out of the box body, and a return spring is arranged at one end of the push shaft arranged in the box body; characterized in that: A moving contact slider connected to the push shaft is disposed on one side of the push shaft, cavities are disposed on both sides of the moving contact slider, and a moving contact assembly is disposed in the cavity; The base body is provided with a stationary contact foot assembly that cooperates with the moving contact assembly; A central axis component is provided between the push shaft and the moving contact slider; one end of the central axis component is clamped on the push shaft, and the other end is clamped on the moving contact slider; The central axis assembly includes a central axis, a central axis spring installed on the central axis, and a first connecting rod and a second connecting rod arranged at two ends of the central axis; Both ends of the central axis are provided with central axis grooves, a first clamping groove is provided on a side of the push shaft close to the moving contact slider, and a second clamping groove is provided on a side of the moving contact slider close to the push shaft; The first connecting rod is arranged in the groove at one end of the central axis, and its two ends are clamped in the first clamping groove of the push shaft; the second connecting rod is arranged in the groove at the other end of the central axis, and its two ends are clamped in the second clamping groove of the moving contact slider.

2. A momentary action push button switch according to claim 1, characterized in that: The central axis includes an inner central axis and an outer central axis; The tail of the inner center axis is provided with a barb, the outer center axis is provided with a center axis through hole, a guide groove is provided in the center axis through hole, and the barb can be hooked in the guide groove so that the center axis spring is fixed between the inner center axis and the outer center axis.

3. A momentary action push button switch according to claim 1 or 2, characterized in that: The moving contact assembly includes a moving contact spring group, a moving contact group arranged on the top of the moving contact spring group, and a moving contact point group arranged on the top of the moving contact group; The stationary contact foot assembly comprises an input stationary contact foot group and an output stationary contact foot group. Both the input stationary contact foot group and the output stationary contact foot group are provided with a stationary contact point group cooperating with the moving contact point group.

4. A momentary action push button switch according to claim 3, characterized in that: A gasket group is also provided at the bottom of the moving contact spring group, and a boss rib group is provided on the base body; When the switch is in an off state, the gasket group is pressed on the boss rib group, and the boss rib group supports the gasket group; When the switch is turned on, the boss rib group applies an auxiliary upward thrust to the gasket group, so that the switch is quickly turned on.

5. A momentary action push button switch according to claim 1 or 2, characterized in that: A first metal sliding sheet is arranged between the moving contact slider and the base body, a second metal sliding sheet is arranged between the push shaft and the base body, and both the first metal sliding sheet and the second metal sliding sheet are arranged on the base body; The moving contact slider can slide up and down on the first metal sliding sheet, and the push shaft can slide up and down on the second metal sliding sheet.

6. A momentary action push button switch according to claim 3, characterized in that: The base body is provided with a base body groove group, and the input static contact foot group and the output static contact foot group are both installed on the base body groove group.

7. A momentary action push button switch according to claim 5, characterized in that: The base body is provided with a T-shaped groove group, and the bolt passes through the through hole on the input static contact foot group and then cooperates with the nut arranged in the T-shaped groove group.

8. A momentary action push button switch according to claim 1 or 2, characterized in that: One end of the push shaft extending out of the box body is provided with a dust cover, and the upper cover is provided with a circular boss, and the dust cover is sleeved on the circular boss.

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