Self-reset switch

Abstract

The utility model discloses a self-reset switch which comprises a switch function assembly, the switch function assembly comprises an inner button, a shifting block, a switch switching kit and a reset spring used for applying forward thrust to the inner button, the inner button is arranged in a front-back sliding mode, the front end of the reset spring is connected with the inner button, and the switch switching kit comprises a shifting arm. The rear end part of the shifting block is in driving connection with the shifting arm, a hinge limiting hole is formed in the inner key, a hinge shaft head is formed at the front end part of the shifting block, the hinge shaft head is movably arranged in the corresponding hinge limiting hole, and positioning convex columns are respectively formed at the upper end and the lower end of the shifting block; the positioning convex columns are respectively arranged in one ends of the corresponding balance springs, and the inner key support is connected with the other corresponding ends of the balance springs. The self-reset switch provided by the utility model facilitates flexible and stable switch operation.

Description

Technical Field

[0001] The utility model relates to the field of wall switches, in particular to a self-resetting switch. Background Art

[0002] At present, most of the control switches of electric lights are push-button switches, that is, the movement of the switch is controlled by toggling or pressing, so as to control the on and off state of the electric light circuit. However, the button cannot be reset automatically, resulting in different shapes of the button on and off, affecting the appearance coordination of the wall switch. Some existing switch products have a self-resetting structure to improve user experience. For example, refer to the "self-resetting switch" with Chinese invention patent publication number CN108039299B. However, since the structure of the parts related to the switch action of the existing self-resetting switch is relatively complex, and there are errors in the size of the parts, if the gap between the parts is set too small, it is easy to cause the switch to get stuck. If the gap between the parts is set too large, it will cause the operating switch to feel loose, which is easy to cause switch failure and it is not easy to ensure user experience. Therefore, it is necessary to improve the self-resetting switch structure of the prior art. Summary of the invention

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a self-resetting switch, which is conducive to making the switch operation flexible and stable.

[0004] The purpose of the utility model is achieved through the following technical solutions.

[0005] The self-resetting switch disclosed in the utility model comprises a switch function component, wherein the switch function component comprises an inner button, a dial block, a switch switching kit and a reset spring for applying a forward thrust to the inner button, wherein the inner button is arranged to slide back and forth, the front end of the reset spring is connected to the inner button, the switch switching kit comprises a dial arm, the rear end of the dial block is drivingly connected to the dial arm, wherein the inner button is formed with a hinged limit hole, the front end of the dial block is formed with a hinged shaft head, the hinged shaft head is movably arranged in the corresponding hinged limit hole, the upper and lower ends of the dial block are respectively formed with positioning bosses, the switch function component comprises a balance spring, the positioning bosses are respectively arranged in one end of the corresponding balance spring, and the inner button supports and connects the other end corresponding to the balance spring.

[0006] Preferably, the self-resetting switch of the utility model includes a face frame and a button assembly, the button assembly includes an outer button and a transmission arm, the transmission arm swings back and forth and is hinged to the outer button, the transmission arm is symmetrically arranged on the rear side of the outer button, one end of the transmission arm is formed with a touch end for pushing the inner button backward, and the other corresponding end of the transmission arm is formed with a passive end, the touch end is arranged on the front side of the middle part of the inner button, the passive end is abutted against the front side of the face frame, and the hinge point between the transmission arm and the outer button is located between the touch end and the passive end.

[0007] Preferably, the gap between the upper and lower touch ends is within one tenth of the distance between the upper and lower transmission arms and the hinge point of the external button.

[0008] Preferably, the transmission arm is formed with an elastic bow portion for generating elastic restoring force in the up and down directions, one end of the elastic bow portion is integrally connected to the transmission arm body, and the other end corresponding to the elastic bow portion is formed with a slider portion, and the slider portion is connected to the face frame in a front-rear linear sliding manner.

[0009] Preferably, the shift arm is set to swing up and down, a pit is formed in the front end of the shift arm, and the upper and lower ends of the pit are respectively formed with pushed inner steps, and the rear end of the shift block is formed with fork feet, which can be adapted and connected with the corresponding pushed inner steps.

[0010] Preferably, the switch function component includes an indicator light module, which is arranged on the rear side of the inner button. A light-through hole is formed on the inner button, and the position of the light-through hole corresponds to the indicator light module. A light-transmitting portion is provided on the outer button, and the position of the light-transmitting portion corresponds to the light-through hole.

[0011] Compared with the prior art, the utility model has the following beneficial effects: an articulated limiting hole is formed by setting an inner button, an articulated shaft head is formed at the front end of the shift block, the articulated shaft head is movably arranged in the corresponding articulated limiting hole, positioning bosses are respectively formed at the upper and lower ends of the shift block, the switch function component includes a balance spring, the positioning bosses are respectively arranged in one end of the corresponding balance spring, and the inner button supports the other end corresponding to the connection balance spring, so that the shift block and the inner button are floatingly hinged, which is conducive to making the switch operation flexible and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front three-dimensional structural schematic diagram of the self-resetting switch of the utility model.

[0013] Figure 2 It is a schematic cross-sectional structure diagram of the self-resetting switch of the utility model as viewed from the right.

[0014] Figure 3This is a front exploded schematic diagram of the self-resetting switch of the utility model.

[0015] Figure 4 It is a back exploded schematic diagram of the self-resetting switch of the utility model.

[0016] Figure 5 It is a front exploded schematic diagram of the switch function component of the present invention.

[0017] Figure 6 It is a back exploded schematic diagram of the switch function component of the present invention.

[0018] Figure 7 The utility model is a cross-sectional structural diagram of the balance spring, the shift block and the shift arm combination.

[0019] Figure 8 It is a three-dimensional structural schematic diagram of the switch switching kit of the utility model.

[0020] Fig. 9 It is a rear view stereoscopic structural schematic diagram of the assembled face frame and key assembly of the utility model.

[0021] Fig.10 It is a three-dimensional structural schematic diagram of the transmission arm of the utility model.

[0022] Fig.11 It is a three-dimensional structural schematic diagram of the inner button and the shift block of the utility model.

[0023] Explanation of reference numerals: face frame 1; button assembly 2; outer button 21; hinged support shaft 211; light-transmitting portion 212; transmission arm 22; touch end 221; slider portion 222; elastic bow portion 223; passive end 224; support frame 3; switch function assembly 4; bottom shell 41; cover shell 42; inner button 43; supporting boss 431; hinged limit hole 432; light-through hole 433; shift block 44; fork foot 4411; balance spring 441; hinged shaft head 442; positioning boss 443; switch switching kit 45; shift arm 451; pushed inner step 4511; switch swing piece 452; moving contact 4521; shift spring 453; swing support piece 454; static contact 455; reset spring 46; indicator light module 47. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings.

[0025] The self-resetting switch of the utility model is as follows Figures 1 to 4 As shown, it includes a switch function component 4, such as Figure 5 and Figure 6As shown, the switch function assembly 4 includes an inner button 43, a dial block 44, a switch switching kit 45, and a return spring 46 for applying a forward thrust to the inner button 43 (it should be noted that only Figure 2 The return spring 46 is schematically drawn), and the inner button 43 is arranged to slide back and forth. Figure 2 As shown, the front end of the return spring 46 is connected to the inner button 43, as shown in FIG. Figure 8 As shown, the switch switching kit 45 includes a lever arm 451. Figure 2 and Figure 7 As shown, the rear end of the shift block 44 drives the connecting shift arm 451. Specifically, as Figure 2 and Figure 8 As shown, the switch switching kit 45 also includes a switch swing piece 452, a toggle spring 453, a swing support piece 454 and a static contact 455. The toggle spring 453 is a compression spring. The front part of the toggle spring 453 is arranged in the toggle arm 451. The rear end of the toggle spring 453 is sleeved outside the convex piece at the front end of the switch swing piece 452. The rear end of the switch swing piece 452 is close to the front side of the swing support piece 454. The front end of the switch swing piece 452 is also provided with a moving contact 4521. Specifically, as shown in FIG. Figure 5 and Figure 6 As shown, the switch function assembly 4 also includes a bottom shell 41 and a cover shell 42. Figure 4 As shown, the cover shell 42 is buckled with the front portion of the bottom shell 41, as shown in FIG. Figure 2 As shown, the switch switching kit 45 is arranged in the bottom shell 41, and the lever arm 451 swings up and down and is hinged to the cover shell 42. Specifically, the lever block 44 pushes the lever arm 451 backward to make the lever arm 451 swing up and down, and the inner button 43 slides forward and backward in the cover shell 42. That is to say, the inner wall of the cover shell 42 guides the forward and backward movement of the inner button 43. Figure 2 As shown, the rear end of the return spring 46 contacts the rear inner structure of the connection cover shell 42 .

[0026] like Figure 5 As shown, the inner button 43 is formed with a hinged limit hole 432, and the front end of the shift block 44 is formed with a hinged shaft head 442. In order to balance the force, the left and right sides of the shift block 44 are respectively formed with the above-mentioned hinged shaft heads 442. Fig.11 As shown, the hinge shaft head 442 is movably arranged in the corresponding hinge limit hole 432, that is, the diameter of the hinge limit hole 432 is slightly larger than the diameter of the hinge shaft head 442, so that the hinge shaft head 442 can move radially within the hinge limit hole 432 to a certain extent. More specifically, the diameter of the hinge limit hole 432 is 0.2 to 0.3 mm larger than the diameter of the hinge shaft head 442. Figure 7 As shown, the upper and lower ends of the shift block 44 are respectively formed with positioning protrusions 443, the switch function component 4 includes a balance spring 441, and the positioning protrusions 443 are respectively arranged in one end of the corresponding balance spring 441, as shown in FIG. Figure 2As shown, the inner button 43 supports and connects the other end of the balance spring 441, and the axis of the balance spring 441 is extended in the up-down direction. Specifically, as shown in FIG. Figure 2 and Figure 6 As shown, a supporting boss 431 is formed inside the inner button 43, and the other ends of the upper and lower balance springs 441 are respectively sleeved outside the corresponding supporting bosses 431 to prevent the balance springs 441 from leaving the working position. That is to say, the shift block 44 is clamped between the upper and lower balance springs 441. It can also be understood that the upper and lower balance springs 441 suspend the shift block 44 in the hinged limit hole 432, that is, the shift block 44 is floatingly set; and because the connection between the shift block 44 and the inner button 43 is an inner and outer circle connection, the micro-activity performance of the shift block 44 relative to the inner button 43 is better.

[0027] like Figure 7 and Figure 8 As shown in FIG. 1 , since the toggle spring 453 generates a component force on the switch swing piece 452 along the swing direction of the switch swing piece 452, the moving contact 4521 is pressed against one of the two stationary contacts 455 by the elastic force of the toggle spring 453, as shown in FIG. Figure 2 As shown in FIG. 1 , when the inner button 43 is pressed backward, the inner button 43 moves backward, causing the return spring 46 to be elastically compressed and deformed. Since the hinge shaft head 442 is movably arranged in the corresponding hinge limit hole 432, the inner button 43 can drive the shift block 44 to move backward, as shown in FIG. Figure 7 As shown, at this time, the lever arm 451 is in an inclined state relative to the horizontal plane, so that the front upper end of the lever arm 451 is located at the front side of the front lower end of the lever arm 451 (for example), so that the rear end of the lever block 44 first contacts the front upper end of the lever arm 451, and the swing center of the lever block 44 is roughly set at the same height as the swing center of the lever arm 451, so that the backward thrust of the inner button 43 on the lever arm 451 generates a clockwise torque on the lever arm 451 (for example), so that the rear end of the lever arm 451 swings downward, and the lever arm 451 drives the toggle spring 453 to swing downward, and the toggle spring 453 can toggle the switch swing piece 452, so that the moving contact 4521 switches to contact the static contact 455. When the inner button 43 is released, the elastic restoring force of the reset spring 46 pushes the inner button 43 forward. Specifically, the upper part of the inner button 43 and the lower part of the inner button 43 are respectively provided with reset springs 46, which is conducive to balancing the upper and lower forces of the inner button 43 and facilitating the flexible reset of the inner button 43. As can be seen from the above, it is actually the shift block 44 that drives the shift arm 451 to swing to realize the switch action. By setting the shift block 44 to a floating setting, when the shift block 44 and the shift arm 451 are in contact with each other, the shift block 44 can elastically give way to avoid the shift block 44 hindering the movement of the shift arm 451, that is, the movement of the shift arm 451 is made more flexible, which is conducive to flexible switch operation. Since the elastic restoring force of the balance spring 441 supports the shift block 44 and prevents the shift block 44 from loosening, it is conducive to effective force transmission, thereby facilitating the stability of the switch function.

[0028] Furthermore, if Figures 1 to 4 As shown, the self-reset switch of the utility model includes a face frame 1 and a button assembly 2. Fig. 9 As shown, the button assembly 2 includes an outer button 21 and a transmission arm 22. The transmission arm 22 is hinged to the outer button 21 for swinging forward and backward. The transmission arm 22 is symmetrically arranged at the rear side of the outer button 21. One end of the transmission arm 22 is formed with a touch end 221 for pushing the inner button 43 backward, and the other end of the transmission arm 22 is formed with a passive end 224. Figure 2 Combination Figure 4 As shown, the pressing end 221 is arranged at the front side of the middle part (middle part in the vertical direction) of the inner button 43, so the transmission arm 22 is symmetrically distributed up and down about the horizontal plane at the swing axis of the shift block 44, the passive end 224 is close to the front side of the face frame 1, and the hinge point of the transmission arm 22 and the outer button 21 is located between the pressing end 221 and the passive end 224. Specifically, as Fig. 9 As shown, a hinge support shaft 211 is formed behind the outer button 21, and the V-shaped groove in the middle of the transmission arm 22 in the vertical direction is engaged with the hinge support shaft 211. In fact, the arc-shaped bottom of the V-shaped groove contacts the hinge support shaft 211, so the transmission arm 22 forms a seesaw structure with respect to the hinge support shaft 211. Figure 2 and Figure 4 As shown, the rear portion of the face frame 1 is buckled with the support frame 3, the front portion of the cover shell 42 is disposed in the support frame 3, and the cover shell 42 is buckled with the support frame 3. Figure 2 In the case of a self-resetting switch, the switch is in a free state (reset state). Figure 1 As shown, at this time, the outer button 21 is flush with the front of the face frame 1. When a person presses the middle part of the outer button 21 in the up-down direction backward with a finger, since the transmission arms 22 are symmetrically arranged on the rear side of the outer button 21, the touch ends 221 of the upper and lower transmission arms 22 move backward roughly synchronously, and since the passive end 224 is close to the front side of the face frame 1, the face frame 1 pushes the passive end 224 forward relatively, so that the touch end 221 swings backward relative to the outer button 21, so that the touch end 221 contacts and pushes the inner button 43 backward, thereby realizing the switch switching; when the finger releases the outer button 21, the inner button 43 moves forward and resets through the elastic restoring force of the reset spring 46, so that the front of the inner button 43 pushes the touch end 221 forward, so that the button assembly 2 is reset forward, and during the reset process of the button assembly 2, since the transmission arms 22 are symmetrically arranged on the rear side, the outer button 21 is restored to its original position due to force balance. Figure 2For example, when a person's finger reaches backward to touch and press the lower part of the outer button 21, since the front part of the face frame 1 blocks the passive end 224, the hinged support shaft 211 at the lower position can push the transmission arm 22 at the lower position backward, so that the touch end 221 of the transmission arm 22 at the lower position obviously swings backward relative to the outer button 21, so the touch end 221 at the lower position presses the inner button 43 backward, thereby realizing the switch switching, when the person releases the outer button 21, the inner button 43 pushes the touch end 221 at the lower position forward, and since the passive end 224 at the lower position is supported by the face frame 1, the transmission arm 22 at the lower position can push the hinged support shaft 211 at the lower position forward, and finally the outer button 21 is reset to the position. Figure 2 The state shown in FIG. 1 can also be understood as follows: since the hinge support shaft 211 is symmetrically distributed up and down, the external button 21 in the free state is prevented from being biased up and down, so that the external button 21 can always be reset to the position. Figure 2 The equilibrium state is shown.

[0029] As described above, since the transmission arm 22 is symmetrically arranged at the rear side of the outer button 21 and the touch end 221 is arranged at the front side of the middle of the inner button 43, the thrust applied to the upper part of the outer button 21 or the lower part of the outer button 21 can be transmitted to the middle position of the inner button 43 through the corresponding transmission arm 22, thereby avoiding the inner button 43 from being obviously biased, so that the inner button 43 can move forward and backward flexibly and stably, which is conducive to flexible and stable switch switching. The utility model can transfer the biased force of the outer button 21 to the middle of the inner button 43 by arranging a swing structure (that is, the transmission arm 22) at the top and bottom, so the transmission structure is relatively simple, which is conducive to the functional stability of the self-reset switch.

[0030] Furthermore, the gap between the upper and lower touch ends 221 (i.e. Figure 2 The dimension "X" in the figure is the distance between the upper and lower transmission arms 22 and the hinge points of the external button 21 (i.e. Figure 2 When the self-reset switch is in a free state, the above-mentioned dimension "X" is approximately the minimum value. After the outer button 21 is pressed, the touch end 221 swings backward, so the dimension "X" increases accordingly. In other words, the dimension "X" is between greater than zero and less than one tenth of the dimension "D", which is beneficial for the touch end 221 to be closer to the middle position of the inner button 43 in the vertical direction, further avoiding the inner button 43 from being biased by force, thereby facilitating the flexible switching action and reset of the self-reset switch.

[0031] Furthermore, if Fig.10As shown, the transmission arm 22 is formed with an elastic bow portion 223 for generating elastic restoring force in the up-down direction, one end of the elastic bow portion 223 is integrally connected to the transmission arm 22 body, and the other end of the elastic bow portion 223 is formed with a slider portion 222, as shown in FIG. Fig. 9 As shown, the slider portion 222 is connected to the face frame 1 in a straight line sliding manner in the front and rear directions, that is, the slider portion 222 is guided by the face frame 1. Specifically, a groove extending in the front and rear directions is formed on the back of the face frame 1, and the slider portion 222 is adapted to be slidably arranged in the corresponding groove. Since the elastic bow portion 223 has a tendency to elastically open, that is, the elastic restoring force of the elastic bow portion 223 generates a thrust in the up and down directions on the groove. Relatively, the thrust is supported by the hinge support shaft 211. Since the transmission arm 22 is arranged symmetrically in the upper and lower directions, the outer button 21 can be floated and positioned in the up and down directions. That is to say, when the outer button 21 moves relative to the face frame 1, the elastic bow portion 223 can produce elastic deformation accordingly, which not only prevents the outer button 21 from loosening, but also allows the outer button 21 to move flexibly relative to the face frame 1.

[0032] Furthermore, if Figure 2 and Figure 7 As shown, the lever arm 451 is arranged to swing up and down, a pit is formed in the front end of the lever arm 451, and the upper and lower ends of the above-mentioned pit are respectively formed with pushed inner steps 4511, and the rear end of the lever block 44 is formed with a fork foot 4411, and the fork foot 4411 can be adapted to be connected with the corresponding pushed inner step 4511. In other words, when the self-resetting switch is in a free state after the switch is switched, for example, the fork foot 4411 located in the upper position is adapted to be connected with the pushed inner step 4511 located in the upper position. At this time, the inner button 43 moves backward and drives the lever block 44 to move backward, and the fork foot 4411 located in the upper position pushes the pushed inner step 4511 located in the upper position backward, so that the lever arm 451 swings clockwise (in Figure 7 The fork leg 4411 is switched to the lower position to adapt to the pushed inner step 4511 located at the lower position. The pushed inner step 4511 can prevent the rear end of the shift block 44 from being separated from the shift arm 451, which is conducive to making the function of the self-reset switch of the utility model stable and reliable. As mentioned above, since the shift block 44 and the inner button 43 are floatingly hinged, when the fork leg 4411 and the pushed inner step 4511 are in contact with each other, the shift block 44 can be elastically floated in a small range to avoid the occurrence of a stuck situation.

[0033] Furthermore, if Figure 5 and Figure 6 As shown, the switch function component 4 includes an indicator light module 47, and the indicator light module 47 includes a circuit board and an LED indicator light. Figure 2 and Figure 5As shown, the indicator light module 47 is disposed on the rear side of the inner button 43. Specifically, the indicator light module 47 is located on the front side of the cover shell 42. Figure 5 As shown, a light hole 433 is formed on the inner button 43, and the position of the light hole 433 corresponds to the indicator light module 47. Figure 3 As shown, a light-transmitting portion 212 is provided on the outer button 21, and the light-transmitting portion 212 can be a transparent plastic strip. The outer button 21 is provided with a strip-shaped through groove, and the light-transmitting portion 212 is embedded in the above-mentioned strip-shaped through groove. The position of the light-transmitting portion 212 corresponds to the light-through hole 433. The LED indicator emits light through the light-through hole 433 and through the light-transmitting portion 212, so that people in front of the self-resetting switch can see the light-transmitting portion 212 glowing. The indicator light module 47 is electrically connected to the switch switching kit 45, so that the indicator light module 47 can display different indicator color lights according to the switching state of the switch switching kit 45.

[0034] like Fig. 9 and Fig.10 As shown, each transmission arm 22 is provided with two touch ends 221 distributed on the left and right and two passive ends 224 distributed on the left and right, which is beneficial to increase the force range of the inner button 43 in the left and right directions, avoid the inner button 43 being obviously biased in the left and right directions, and thus facilitate the flexible movement of the inner button 43 forward and backward.

Claims

1. A self-resetting switch, comprising a switch function assembly (4), the switch function assembly (4) comprising an inner button (43), a shift block (44), a switch switching kit (45), and a return spring (46) for applying a forward thrust to the inner button (43), the inner button (43) being arranged to slide forward and backward, the front end of the return spring (46) being connected to the inner button (43), the switch switching kit (45) comprising a shift arm (451), the rear end of the shift block (44) being drivingly connected to the shift arm (451), characterized in that: The inner button (43) is formed with a hinged limit hole (432), the front end of the shift block (44) is formed with a hinged shaft head (442), the hinged shaft head (442) is movably arranged in the corresponding hinged limit hole (432), the upper and lower ends of the shift block (44) are respectively formed with positioning bosses (443), the switch function component (4) includes a balance spring (441), the positioning bosses (443) are respectively arranged in one end of the corresponding balance spring (441), and the inner button (43) supports and connects the other end of the balance spring (441) corresponding to the balance spring (441).

2. The self-resetting switch according to claim 1, characterized in that: The invention comprises a face frame (1) and a key assembly (2), wherein the key assembly (2) comprises an outer key (21) and a transmission arm (22), wherein the transmission arm (22) is hinged to the outer key (21) so as to swing forward and backward, and the transmission arm (22) is symmetrically arranged at the rear side of the outer key (21) from top to bottom, and a touch end (221) for pushing the inner key (43) backward is formed at one end of the transmission arm (22), and a passive end (224) is formed at the other corresponding end of the transmission arm (22), wherein the touch end (221) is arranged at the front side of the middle part of the inner key (43), and the passive end (224) is abutted against the front side of the face frame (1), and the hinge point between the transmission arm (22) and the outer key (21) is located between the touch end (221) and the passive end (224).

3. The self-resetting switch according to claim 2, characterized in that: The gap between the upper and lower touch ends (221) is within one tenth of the distance between the upper and lower transmission arms (22) and the hinge points of the external button (21).

4. The self-resetting switch according to claim 2 or 3, characterized in that: The transmission arm (22) is formed with an elastic bow portion (223) for generating an elastic restoring force in the up-down direction, one end of the elastic bow portion (223) is integrally connected to the transmission arm (22) body, and the other end of the elastic bow portion (223) is formed with a sliding block portion (222), and the sliding block portion (222) is connected to the face frame (1) in a front-rear linear sliding manner.

5. The self-resetting switch according to any one of claims 1 to 3, characterized in that: The lever arm (451) is arranged to swing up and down, a pit is formed in the front end of the lever arm (451), and the upper and lower ends of the pit are respectively formed with pushed inner steps (4511), and the rear end of the lever block (44) is formed with a fork foot (4411), and the fork foot (4411) can be adapted to connect with the corresponding pushed inner step (4511).

6. The self-resetting switch according to claim 2 or 3, characterized in that: The switch function component (4) comprises an indicator light module (47), the indicator light module (47) being arranged at the rear side of the inner button (43), a light through hole (433) being formed on the inner button (43), the position of the light through hole (433) corresponding to the indicator light module (47), and a light-transmitting portion (212) being provided on the outer button (21), the position of the light-transmitting portion (212) corresponding to the light through hole (433).

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