Sequential trigger type double-switch button mechanism

Abstract

The utility model relates to a sequential trigger type double-switch button mechanism, which comprises an operation button, a bottom shell and a switch module, the middle part of the operation button is hinged to the bottom shell, two ends of the operation button are a first end and a second end, the first end is provided with a pressure bearing part, and a reset elastic piece is arranged between the first end and the bottom shell; the two microswitches are electrically connected with the circuit board and are respectively arranged below the first end and the second end, when the pressure-bearing part is driven to be pressed downwards, the operation button rotates, the second end is lifted up to release the second microswitch, the first end presses the first microswitch, and the double microswitches are simultaneously in a first trigger state; the pressure-bearing part is loosened, the operation button rotates reversely, the first end is lifted to release the first microswitch, then the second end presses the second microswitch downwards, the double microswitches are reset to a second triggering state, the mechanism realizes sequential triggering of the two microswitches through single pressing operation, and the requirement for time sequence control of special functions is met.

Description

Technical Field

[0001] This utility model relates to the field of push button switch technology, specifically to a sequentially triggered double switch button mechanism. Background Technology

[0002] Push-button switches, as core signal triggering components, are widely used in automobiles, motorcycles, electric vehicles, and various intelligent electronic devices. Motorcycles and electric vehicles, due to their limited handlebar control area, and automobiles, due to their limited interior space, place particularly stringent requirements on the compactness, operational precision, and integration of switch structures. For example, the automotive central locking switch structure disclosed in patent number CN201521141695.1 includes a housing, a circuit board housed within the housing, two microswitches mounted on the circuit board, a button base connected to a pin in the housing, and a button mounted on the button base. A cantilever beam is mounted on each of the two side walls of the housing, with pressure plates at the ends of the cantilever beams, positioned above the microswitches. The button base has two push rods that press down on the pressure plates. When the button is pressed, the button and button base rotate together around the pin, thereby driving one of the push rods to press down on the pressure plate on one of the cantilever beams, activating the microswitch located under that pressure plate and realizing the button function. This switch occupies little space and can meet the requirements for placement in confined spaces. However, this type of structure is a single independent trigger design. Its operation logic is that pressing one end of the button can only trigger the corresponding side rod to press down and trigger the micro switch on one side. Only by pressing the other end of the button can the other side rod be triggered to press down and trigger the other micro switch. It is necessary to achieve the on and off control of the two micro switches through two independent pressing actions. It is impossible to achieve the sequential action and linkage control of the two micro switches by pressing a single end of the button. It is difficult to meet the usage requirements of dual-switch timing trigger in some functions of automobiles, motorcycles, electric vehicles and other equipment. Moreover, the operation steps are cumbersome. When operating the vehicle while it is in motion, multiple operations can easily affect the operating efficiency and even cause safety hazards. Utility Model Content

[0003] To address the aforementioned deficiencies in the existing technology, the purpose of this utility model is to provide a sequentially triggered dual-switch button mechanism that can achieve the sequential triggering of two microswitches through a single pressing operation, thereby meeting the timing control requirements of special functions.

[0004] The technical solution of this utility model is: a sequentially triggered dual-switch button mechanism, including an operation button, a base shell, and a switch module;

[0005] The operation button is hinged to the bottom shell in the middle, and the two ends of the button relative to the hinge point form a first end and a second end, respectively. The first end of the operation button is provided with a pressure bearing part. A reset elastic element is provided between the operation button and the bottom shell to drive the operation button to rotate around the hinge point to reset.

[0006] The switch module includes a circuit board, a first micro switch and a second micro switch. The circuit board is mounted on the bottom shell. The first micro switch and the second micro switch are both electrically connected to the circuit board and are respectively located below the first and second ends of the operation button.

[0007] When the pressure-bearing part of the operation button is pressed down, it causes the operation button to rotate around the hinge point. Its second end rises and releases the pressure on the second micro switch. The second micro switch is released to trigger circuit switching. Then, as the pressure-bearing part continues to press down, the first end of the operation button presses the first micro switch to trigger circuit switching, thereby making both micro switches simultaneously in the first trigger state.

[0008] After the pressure part of the operation button is released, the operation button rotates in the opposite direction under the action of the reset elastic element. Its first end rises to release the pressure on the first micro switch, and the first micro switch is released to trigger circuit switching. Then the second end presses down on the second micro switch to trigger circuit switching, thereby resetting the dual micro switches to the second trigger state.

[0009] Using the above technical solution, two triggering actions in different sequences can be achieved with a single operation button. The operation button adopts a lever structure with its middle hinged to the bottom shell, allowing it to rotate stably around the hinge point when the pressure part is pressed down. The first end moves downward and the second end moves upward, realizing the reverse linkage action of the two ends. By setting the first micro switch and the second micro switch respectively below the first and second ends of the operation button, when the second end of the button moves upward, it can first release the pressure on the second micro switch, realizing the release of the second micro switch. When the first end continues to move downward, it can press the first micro switch, realizing the timing control of synchronous triggering of the two switches. The action is smooth during the triggering process, and there will be no problem of the two micro switches being accidentally triggered or the triggering sequence being disordered. The reset elastic element can drive the operation button to rotate in the opposite direction after the external force is removed, so that the first end resets and disengages from the first micro switch first, and the second end resets downward and presses the second micro switch. This ensures that the mechanism resets reliably in the set sequence. The overall action transmission is direct, the triggering sequence is stable, and the reliability of repeated use is high.

[0010] A further feature of this invention includes a gear position reminder component;

[0011] The gear position reminder component includes a gear position component and a gear position elastic component disposed in the middle of the operation button, and a gear position track disposed at the upper end of the bottom shell. The gear position elastic component is used to push the gear position component so that the gear position component and the gear position track maintain elastic contact and cooperation. When the operation button is rotated, the gear position component can be driven to move on the gear position track.

[0012] The upper surface of the gear rail is provided with a recessed first stop and a second stop. When the dual micro switch is in the second trigger state, the gear component and the first stop form a locking engagement for positioning. When the operation button is rotated to the second micro switch in the release position, the gear component and the second stop form a locking engagement to provide tactile feedback of the operation being in place.

[0013] With the above-mentioned further configuration, the gear position reminder component continuously pushes the gear position component through the gear position elastic element, keeping the gear position component in elastic contact with the gear position track. When the operation button is turned, it can drive the gear position component to move synchronously along the gear position track. In the initial state, the gear position component cooperates with the first locking position to achieve stable positioning of the operation button's initial position and prevent free shaking. When the operator presses, the gear position component will disengage from the first locking position and slide smoothly along the gear position track. During the process of locking into the second locking position, it will bring a clear tactile feedback, allowing the operator to intuitively perceive that it has been triggered. At the same time, the elastic pushing locking structure can allow the gear position component to slide smoothly out from the second locking position when the operation button continues to be turned, so that a stable feedback can be obtained for each operation.

[0014] A further feature of this invention is as follows: the first locking position is formed by the recess of the gear rail below the center of the corresponding operation button; the upper surface of the gear rail extends from one end of the first locking position to form a rail surface, the rail surface extends upward at an incline away from the pressure bearing part, and a second locking position is formed in the rail surface; the side of the gear member that cooperates with the gear rail has a round head structure.

[0015] With the above-mentioned further design, the gear shift rail adopts a rail surface that extends upward from the first stop position, allowing the gear shift component to move smoothly along the inclined surface as the button is rotated. When the operation button is pressed, the gear shift component will smoothly climb up along the inclined rail surface without any jamming or sticking, making the entire operation process smoother. At the same time, the end of the gear shift component is designed with a rounded head structure, forming an arc contact with the rail surface, which can effectively reduce sliding friction, making the gear shifting process smooth and without jamming, while reducing component wear. The first stop position is set at the corresponding position below the middle of the operation button, which matches the initial unpressed state. In the initial state, it can firmly lock the gear shift component, preventing the operation button from shifting or shaking during transportation or idle time, further improving the stability of the structure.

[0016] A further feature of this invention is that both the first and second locking positions are V-shaped and concave.

[0017] With the above-mentioned further settings, the first and second locking positions adopt a V-shaped concave structure. When the locking component enters the locking position, it can automatically center along the V-shaped inclined surface, improving the gear positioning effect. The V-shaped structure can constrain the locking component from both sides, enhance the holding force of the locking engagement, and make the mechanism less prone to gear jumps or loosening in a vibration environment. It can significantly improve the tactile feedback when switching gears, allowing the operator to clearly perceive the positioning status.

[0018] A further feature of this invention is that the operation button has a downwardly extending linkage rod in the middle, and the linkage rod has a receiving groove with an opening at the lower end, in which the stop member and the stop elastic member are received; side baffles extend downward on opposite sides of the lower end of the linkage rod, and the two side baffles are respectively located on both sides of the stop track.

[0019] With the above-mentioned further design, the linkage rod in the middle of the operation button can rotate synchronously with the button, ensuring that the movement of the gear component is synchronized with the button action. Moreover, the receiving groove inside the linkage rod can house the gear component and the gear elastic component, which simplifies the assembly structure and provides protection for the internal elastic components. The side baffles on both sides of the lower end of the linkage rod are located on both sides of the gear track, which can provide lateral limit to the gear component, preventing it from shifting left or right during movement and ensuring that the gear component always moves stably along the center of the track.

[0020] A further feature of this invention is that the bottom shell includes an upper cover and a base, the upper cover and the base are detachably connected to form a receiving cavity, and the switch module is assembled in the receiving cavity;

[0021] The upper cover is provided with a first clearance hole and a second clearance hole for the trigger ends of the first micro switch and the second micro switch to be exposed and extended respectively.

[0022] The upper cover is provided with brackets on both sides, and the operation button is provided with hinged lugs on opposite sides of the center, which are hinged to the corresponding brackets.

[0023] The stop rail is located on the upper cover and within the gap space formed between the two supports.

[0024] With the above-mentioned further design, the bottom shell is formed by a detachable connection between the top cover and the base to create an accommodating cavity, which can provide closed protection for the switch module and reduce the impact of dust and impurities on the internal electrical components. The first and second clearance holes on the top cover allow the trigger ends of the first and second microswitches to be exposed, ensuring direct and effective contact with the operation button. The brackets on both sides of the top cover form a hinged engagement with the hinged lugs of the operation button, providing a stable rotation fulcrum for the button and ensuring smooth and reliable swinging action. The position rail is set in the gap space between the two brackets, making full use of the internal space for installation and making the overall structural layout more compact.

[0025] A further feature of this invention is as follows: the first end of the operation button is provided with a downwardly extending first contact rod, which acts on the trigger end of a first micro switch; the second end of the operation button is provided with a downwardly extending second contact rod, which acts on the trigger end of a second micro switch; the first end of the operation button is provided with a first positioning post, and the upper cover is provided with a second positioning post corresponding to the lower part of the first positioning post; the two ends of the reset elastic member are respectively sleeved on the first positioning post and the second positioning post.

[0026] With the above-mentioned further configuration, the first contact rod on the first end of the operation button can move downward with the end and directly press the first micro switch, while the second contact rod on the second end can move upward with the end to release the pressure on the second micro switch. The two contact rods at both ends respectively realize the triggering and release of the two micro switches, with precise action transmission and sensitive response. The first positioning post and the second positioning post respectively position the upper and lower ends of the reset elastic element, which can effectively limit the movement and deformation of the elastic element during the extension and contraction process, ensure the stability of the reset elastic force direction, make the operation button reset action consistent each time, and improve the stability of the mechanism in long-term use. Attached Figure Description

[0027] Figure 1 This is a structural diagram of a specific embodiment of the present utility model;

[0028] Figure 2 This is an internal structural diagram of a specific embodiment of the present utility model;

[0029] Figure 3 This is a structural diagram of the operation button in a specific embodiment of the present utility model;

[0030] Figure 4 This is a structural diagram of the upper cover of a specific embodiment of the present utility model;

[0031] Figure 5 This is a structural diagram of the base according to a specific embodiment of the present utility model.

[0032] In the diagram: Operation button 1, bottom shell 2, switch module 3, first end 11, second end 12, pressure bearing part 13, reset elastic element 4, circuit board 31, first micro switch 32, second micro switch 33, gear position reminder component 5, gear position component 51, gear position elastic element 52, gear position rail 53, first stop position 531, second stop position 532, rail surface 533, linkage rod 14, receiving groove 141, side baffle 142, top cover 21, base 22, receiving cavity 20, first clearance hole 211, second clearance hole 212, bracket 213, hinged support ear 15, gap space 210, first touch rod 16, second touch rod 17, first positioning post 18, second positioning post 214. Detailed Implementation

[0033] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] like Figure 1-5 As shown, the present invention provides a sequentially triggered dual-switch button mechanism, which includes an operation button 1, a bottom shell 2, and a switch module 3.

[0035] The operation button 1 is hinged to the bottom shell 2 in the middle to form a lever structure that can rotate around the hinge point. The two ends of the operation button 1 relative to the hinge point are the first end 11 and the second end 12, respectively. The first end 11 of the operation button 1 is integrally provided with a pressure bearing part 13, which is used to allow external pressing force to be applied. A reset elastic element 4 is provided between the operation button 1 and the bottom shell 2. The reset elastic element 4 is a compression spring, one end of which abuts against the operation button 1 and the other end of which abuts against the bottom shell 2, for driving the operation button 1 to rotate around the hinge point to reset.

[0036] The switch module 3 includes a circuit board 31, a first micro switch 32, and a second micro switch 33. The circuit board 31 is fixedly installed inside the bottom shell 2. The first micro switch 32 and the second micro switch 33 are both soldered to the circuit board 31 and electrically connected to the circuit board 31. The first micro switch 32 is located below the first end 11 of the operation button 1, and the second micro switch 33 is located below the second end 12 of the operation button 1. When the operation button 1 is rotated, its first end 11 and second end 12 can respectively act on the corresponding micro switches.

[0037] When the pressure-bearing part 13 of the operation button 1 is pressed down, it causes the operation button 1 to rotate around the hinge point, and its second end 12 is raised and releases the pressure on the second micro switch 33. The second micro switch 33 is released to trigger circuit switching. Then, as the pressure-bearing part 13 continues to press down, the first end 11 of the operation button 1 presses the first micro switch 32 to trigger circuit switching, thereby making both micro switches simultaneously in the first trigger state.

[0038] After the pressure part 13 of the operation button 1 is released, the operation button 1 rotates in the opposite direction under the action of the reset elastic element 4. Its first end 11 is raised to release the pressure on the first micro switch 32. The first micro switch 32 is released to trigger circuit switching. Then the second end 12 presses down on the second micro switch 33 to trigger circuit switching, thereby resetting the dual micro switches to the second trigger state.

[0039] Specifically, it also includes a gear position reminder component 5; the gear position reminder component 5 includes a gear position member 51 and a gear position elastic member 52 disposed in the middle of the operation button 1, and a gear position track 53 fixed or integrally disposed on the upper end of the bottom shell 2. The gear position elastic member 52 is used to push the gear position member 51 so that the gear position member 51 and the gear position track 53 maintain elastic contact and cooperation. When the operation button 1 is rotated, the gear position member 51 can be driven to move on the gear position track 53.

[0040] The upper surface of the stop rail 53 is provided with a recessed first stop 531 and a second stop 532. When the dual micro switch is in the second trigger state, the stop member 51 and the first stop 531 form a locking engagement for positioning. When the operation button 1 is rotated to make the second micro switch 33 in the release position, the stop member 51 and the second stop 532 form a locking engagement to provide tactile feedback of the operation being in place.

[0041] Specifically, the first stop position 531 is formed by the recess of the stop rail 53 below the center of the corresponding operation button 1, and this first stop position corresponds to the initial state position of the mechanism; the upper surface of the stop rail 53 extends from one end of the first stop position 531 to form a rail surface 533, the rail surface 533 extends upward at an incline away from the pressure bearing part 13, and a recessed second stop position 532 is formed on the rail surface 533, the second stop position 532 corresponds to the trigger position when the second micro switch 33 is released. Both the first stop position 531 and the second stop position 532 are V-shaped and recessed. The stop component is a sphere or a ball cylinder, and the side that mates with the stop rail 53 has a rounded head structure.

[0042] Specifically, the operation button 1 has a downwardly extending linkage rod 14 in the middle. The linkage rod 14 has a receiving groove 141 with an open lower end. The stop member 51 and the stop elastic member 52 are housed in the receiving groove 141. The stop elastic member 52 is a compression spring, with one end abutting against the inner wall of the receiving groove 141 and the other end pushing against the stop member 51, so that the stop member 51 and the stop track 53 maintain elastic contact. Side baffles 142 extend downward integrally from opposite sides at the lower end of the linkage rod 14. The two side baffles 142 are located on both sides of the stop track 53, and are used to laterally limit the stop member 51.

[0043] Specifically, the bottom shell 2 includes an upper cover 21 and a base 22. The upper cover 21 and the base 22 are detachably connected by a snap or screw to form a receiving cavity 20. The switch module 3 is installed in the receiving cavity 20.

[0044] The top cover 21 has a first clearance hole 211 and a second clearance hole 212. The trigger end of the first micro switch 32 extends upward from the first clearance hole 211, and the trigger end of the second micro switch 33 extends upward from the second clearance hole 212, so as to correspond and cooperate with the operation button 1 respectively.

[0045] The upper cover 21 has brackets 213 extending upward on both sides of the upper cover 21. The operation button 1 has hinge ears 15 on both sides of the middle part, which are hinged to the corresponding brackets 213. The hinge ears have shaft holes and the brackets have pins, or the hinge ears have pins and the brackets have shaft holes, and the pins pass through the corresponding shaft holes to realize the rotational hinged cooperation between the operation button and the brackets.

[0046] The stop rail 53 is integrally formed on the upper end of the cover 21 and is located in the gap space 210 formed between the two supports 213.

[0047] Specifically, the first end 11 of the operation button 1 is provided with an integrally extended downward first contact rod 16, which corresponds vertically to the trigger end of the first micro switch 32 and is used to press down the trigger end of the first micro switch 32; the second end 12 of the operation button 1 is provided with an integrally extended downward second contact rod 17, which corresponds vertically to the trigger end of the second micro switch 33 and is used to press down the trigger end of the second micro switch 33; the first end 11 of the operation button 1 is integrally provided with a first positioning post 18, and the upper cover 21 is provided with a second positioning post 214 corresponding to the lower part of the first positioning post 18; the two ends of the reset elastic member 4 are respectively sleeved on the first positioning post 18 and the second positioning post 214.

[0048] The working process of this utility model is as follows:

[0049] Under normal conditions, the operation button is in its initial position under the action of the reset elastic element, the stop element is engaged in the first stop position, the second contact rod presses down on the second micro switch (in the pressed state), and the first contact rod separates from the first micro switch (in the released state); the first micro switch and the second micro switch can be independently configured as normally open or normally closed, and the initial state corresponds to their respective preset circuit logic.

[0050] When the pressure bearing part is pressed, the operating button rotates around the hinge point, the second end rises upward, the second contact rod releases the pressure on the trigger end of the second micro switch, the trigger end of the second micro switch changes from the pressed state to the released state, the circuit state changes accordingly, and at the same time the stop component slides upward along the track surface and locks into the second stop position, forming a tactile feedback; if the pressure bearing part is pressed down further, the first end of the operating button continues to move downward, the first contact rod presses down on the trigger end of the first micro switch, so that the trigger end of the first micro switch changes from the released state to the pressed state, the circuit state changes accordingly, thus completing the circuit switching of two sequential triggers, realizing the preset stop function, and both micro switches are simultaneously in the first trigger state;

[0051] When a reset is required, release the pressure part, and the reset elastic element pushes the first end of the operation button upward, causing the operation button to rotate in the opposite direction around the hinge point. The first end rises upward, and the first contact rod releases the pressure on the trigger end of the first micro switch, completing the circuit state switch. Then, the operation button continues to rotate in the opposite direction, and the second end moves downward. The second contact rod presses the trigger end of the second micro switch again, completing the circuit state switch. During this process, the positioner slides out from the second stop position, falls back along the inclined track surface, and re-locks into the first stop position. The operation button returns to its initial position, completing the reset of the dual micro switches to the second trigger state.

[0052] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a number" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "installation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A sequential trigger dual switch button mechanism, characterized by, It includes operation buttons (1), a bottom shell (2), and a switch module (3); The operation button (1) is hinged to the bottom shell (2) in the middle, and the two ends of the button (1) opposite to the hinge point form a first end (11) and a second end (12) respectively. The first end (11) of the operation button (1) is provided with a pressure bearing part (13). A reset elastic element (4) is provided between the operation button (1) and the bottom shell (2) for driving the operation button (1) to rotate and reset around the hinge point. The switch module (3) includes a circuit board (31), a first micro switch (32) and a second micro switch (33). The circuit board (31) is mounted on the bottom shell (2). The first micro switch (32) and the second micro switch (33) are both electrically connected to the circuit board (31) and are respectively located below the first end (11) and the second end (12) of the operation button (1). When the pressure-bearing part (13) of the operation button (1) is driven to press down, it drives the operation button (1) to rotate around the hinge point. Its second end (12) is raised and releases the pressure on the second micro switch (33). The second micro switch (33) is released to trigger circuit switching. As the pressure-bearing part (13) continues to press down, the first end (11) of the operation button (1) presses the first micro switch (32) to trigger circuit switching, thereby making both micro switches simultaneously in the first trigger state. After the pressure part (13) of the operation button (1) is released, the operation button (1) rotates in the opposite direction under the action of the reset elastic member (4). Its first end (11) is raised to release the pressure on the first micro switch (32). The first micro switch (32) is released to trigger the circuit switching. Then the second end (12) is pressed down to the second micro switch (33) to trigger the circuit switching, thereby resetting the dual micro switches to the second trigger state.

2. The sequence-triggered dual-switch button mechanism of claim 1, wherein, It also includes a gear position indicator component (5); The gear position reminder component (5) includes a gear position member (51) and a gear position elastic member (52) disposed in the middle of the operation button (1), and a gear position track (53) disposed at the upper end of the bottom shell (2). The gear position elastic member (52) is used to push the gear position member (51) so that the gear position member (51) and the gear position track (53) maintain elastic contact. When the operation button (1) is rotated, the gear position member (51) can be driven to move on the gear position track (53). The upper surface of the gear rail (53) is provided with a recessed first stop (531) and a second stop (532). When the dual micro switch is in the second trigger state, the gear member (51) and the first stop (531) form a locking engagement for positioning. When the operation button (1) is rotated to make the second micro switch (33) in the release position, the gear member (51) and the second stop (532) form a locking engagement to provide tactile feedback of the operation being in place.

3. The sequence-triggered dual-switch button mechanism of claim 2, wherein, The first stop (531) is formed by the recess of the stop rail (53) at the position below the middle of the corresponding operation button (1); the upper surface of the stop rail (53) extends from one end of the first stop (531) to form a rail surface (533), the rail surface (533) extends upward at an incline away from the pressure bearing part (13), and a recessed second stop (532) is formed on the rail surface (533); the side of the stop member (51) that cooperates with the stop rail (53) has a round head structure.

4. A sequence-triggered dual-switch button mechanism according to claim 2 or 3, characterized in that Both the first stop (531) and the second stop (532) are V-shaped and concave.

5. The sequence-triggered dual-switch button mechanism of claim 2 or 3, wherein, The operation button (1) has a downwardly extending linkage rod (14) in the middle. The linkage rod (14) has a receiving groove (141) with an opening at the lower end. The stop member (51) and the stop elastic member (52) are housed in the receiving groove (141). Side baffles (142) extend downward on opposite sides at the lower end of the linkage rod (14). The two side baffles (142) are located on both sides of the stop track (53).

6. The sequence-triggered dual-switch button mechanism of claim 2 or 3, wherein, The bottom shell (2) includes an upper cover (21) and a base (22). The upper cover (21) and the base (22) are detachably connected to form a receiving cavity (20). The switch module (3) is installed in the receiving cavity (20). The upper cover (21) is provided with a first clearance hole (211) and a second clearance hole (212) for the trigger ends of the first micro switch (32) and the second micro switch (33) to be exposed and extended respectively; The upper cover (21) is provided with brackets (213) on both sides, and the operation button (1) is provided with hinged lugs (15) on the opposite sides of the middle part, which are hinged to the corresponding brackets (213); The stop rail (53) is located on the upper cover (21) and within the gap space (210) formed between the two supports (213).

7. The sequentially triggered dual-switch button mechanism according to claim 6, characterized in that, The first end (11) of the operation button (1) is provided with a downwardly extending first contact rod (16), which acts on the trigger end of the first micro switch (32); the second end (12) of the operation button (1) is provided with a downwardly extending second contact rod (17), which acts on the trigger end of the second micro switch (33); the first end (11) of the operation button (1) is provided with a first positioning post (18), and the upper cover (21) is provided with a second positioning post (214) corresponding to the lower part of the first positioning post (18), and the two ends of the reset elastic member (4) are respectively sleeved on the first positioning post (18) and the second positioning post (214).

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