switch

Abstract

This application relates to a switch, belonging to the field of electrical technology. The switch includes a base box, a button, a micro switch, and a reset element. The micro switch is located in the base box, the button is mounted on the base box and rotatably connected to it, and the reset element is located between the button and the base box. The button is used to press the micro switch; when the button presses the micro switch, the micro switch is locked in a pressed state; when the button is pressed again, the micro switch is locked in a released state. The micro switch is used to connect to the circuit between the power supply line and the controlled electrical appliance, and controls the on / off state of the circuit by switching between the pressed and released states. Using this application can reduce the dialing noise of mechanical switches.

Description

Technical Field

[0001] This application relates to the field of electrical technology, and in particular to a switch. Background Technology

[0002] Switches, such as wall switches installed on the wall, are the main electrical components for controlling the on / off of lighting and electrical appliances. Most switches on the market today adopt a rocker or swing-type mechanical structure or are electronic switches with internal circuit components.

[0003] A mechanical switch uses a button that works in conjunction with an internal rocker or oscillating mechanism. When the user presses the first side of the button, it causes the first side of the internal rocker to drop, engaging the moving contact on the rocker with the stationary contact below to connect the circuit. At this time, the second side of the button tilts upward, maintaining the button in this tilted state to ensure contact pressure between the moving contact on the rocker and the stationary contact below, keeping them engaged. When the user needs to disconnect the circuit, pressing the tilted second side of the button causes it to drop, rotating the rocker in the opposite direction and engaging the stationary contact above. The first side of the button then tilts upward and remains in this tilted state. During the power-on / off process, the contact and separation of the internal rocker or oscillating moving and stationary contacts can result in a loud dialing sound, which may disturb users' rest at night.

[0004] The internal electronic switch can be controlled by touch, but the cost of the switch is high due to the built-in circuit components. Summary of the Invention

[0005] To address the problems of the prior art, this application provides a switch. The technical solution is as follows: The switch includes a base box, a button, a micro switch, and a reset component; The micro switch is located in the base box, the button is disposed on the base box and rotatably connected to the base box, and the reset component is located between the button and the base box; The button is used to press the micro switch. When the button presses the micro switch, the micro switch is locked in the pressed state. When the button presses the micro switch again, the micro switch is locked in the released state. The micro switch is used to connect to the circuit between the power supply line and the control appliance, and controls the on / off state of the circuit by switching between the pressed state and the released state.

[0006] In one implementation, when the button is pressed, the reset member is in a compressed state; when the button is released from pressure, the button is reset to be parallel to the mounting surface where the switch is located under the action of the reset member.

[0007] In one implementation, the switch further includes a travel amplification structure, which is rotatably mounted between the button and the base box. The button presses the button of the micro switch through the travel amplification structure, and the travel amplification structure is used to reduce the pressing travel of the button.

[0008] In one implementation, the bottom box includes a cover plate having a perforation. The cover plate covers the micro switch, and the button is exposed through a cutout; The stroke amplification structure is located in the hollow space, with one end located on the button of the micro switch for pressing the button, and the other end rotatably connected to the cover plate or the button. The button is mounted on the cover plate and is rotatably connected to the cover plate.

[0009] In one implementation, a first pressing protrusion is provided between the contact position between the travel amplification structure and the button and the position of the pivot that rotates the travel amplification structure, and the button presses the travel amplification structure at the first pressing protrusion. The first pressing protrusion is disposed on the surface of the button facing the travel amplification structure, or on the surface of the travel amplification structure facing the button, or on both the surfaces of the button and the travel amplification structure facing each other.

[0010] In one implementation, the travel amplification structure has a second pressing protrusion on the surface facing the button, and / or the button has a second pressing protrusion on the surface facing the travel amplification structure, the travel amplification structure pressing the button at the second pressing protrusion.

[0011] In one implementation, the stroke amplification structure includes a first part and a second part connected together, the first part being used for rotational connection, and the second part being used for pressing the button of the micro switch; The thickness of the first part is greater than the thickness of the second part, and the thickness of the part between the first part and the second part gradually changes.

[0012] In one implementation, the reset element and the stroke amplification structure are located adjacent to each other. The reset member is located on the side of the travel amplification structure in the width direction and abuts between the button and the cover plate, wherein the width direction of the travel amplification structure is perpendicular to the axis of rotation that causes the travel amplification structure to rotate; Alternatively, one end of the reset element abuts against the button, and the other end passes through the travel amplification structure and abuts against the structure inside the base box.

[0013] In one implementation, the stroke amplification structure is a plate-shaped oscillating plate, the portion of which near the end covers the button of the micro switch.

[0014] In one implementation, the micro switch includes a button mechanism with a mechanical self-locking function and a contact mechanism with a circuit switching function; The contact mechanism includes a movable contact and a first stationary contact, and the button mechanism is drivenly connected to the movable contact; The button is used to press the button mechanism, causing the button mechanism to switch between the pressed state and the released state, so as to control the moving contact and the first stationary contact to switch between engagement and disengagement, thereby realizing the on / off state of the circuit.

[0015] In one implementation, the button mechanism includes a button and a locking member with ratchet teeth. The button is used to press the ratchet teeth of the locking member to lock the locking member in a first position or a second position. The locking member and the moving contact are kinetically connected. When the locking member is locked in the first position, the button is in the pressed state, and the moving contact piece is engaged with the first stationary contact piece; When the locking member is locked in the second position, the button is in the pop-up state, and the moving contact is separated from the first stationary contact.

[0016] In one implementation, the locking member has a mounting hole at its bottom facing the movable contact piece, a roller is arranged in the mounting hole, a lubricant is filled between the roller and the wall of the mounting hole, and the bottom end face of the roller extends out of the mounting hole and abuts against the movable contact piece.

[0017] In one implementation, the bottom box includes a cover plate, and the button is disposed on the cover plate; The first side of the button is rotatably connected to the cover plate, and the second side of the button is used to press the micro switch. The first side and the second side of the button are opposite to each other. There is a gap between the button and the cover plate that allows the button to rotate, and the gap gradually increases from the first side of the button to the second side of the button.

[0018] The beneficial effects of the technical solutions provided in this application are: The internal structure of a switch that controls the on / off state of a circuit is a microswitch. A microswitch is a microswitch with a mechanical self-locking function. Pressing the microswitch once locks it in one state (called the pressed state), and pressing it again locks it in another state (called the released state). When this microswitch is connected to the circuit between the power supply and the control appliance, the circuit can be controlled to switch between the on and off states by switching between the pressed and released states.

[0019] In this way, the button acts as the transmission component that triggers the microswitch, and immediately resets after being triggered. The on / off state of the circuit is entirely maintained by the self-locking mechanism inside the microswitch, decoupling the switch triggering from the circuit on / off state. Moreover, the collision sound between the moving and stationary contacts inside the microswitch is gentle, avoiding the problem of loud dialing sounds from traditional switches.

[0020] Furthermore, since the button only serves as a transmission component to trigger the micro switch and not as a structural component to maintain the circuit's on / off state, it can reset to its initial state after triggering the micro switch. For example, it can reset to be parallel to the mounting surface, making the switch a perfectly flat switch. This enhances the overall aesthetics of the wall and meets the modern interior decoration's aesthetic requirements for a simple and neat appearance.

[0021] Furthermore, the micro switch, assembled as an independent module within the switch, is easier to assemble than a rocker assembly, facilitating automated assembly and thus reducing assembly costs. Moreover, placing the micro switch inside the switch also reduces overall switch cost compared to touch-sensitive controls. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is an exploded view of a switch provided in an exemplary embodiment of this application; Figure 2 This is a schematic diagram of the assembled switch provided in an exemplary embodiment of this application; Figure 3 This is a schematic diagram of a micro switch inside a switch provided in an exemplary embodiment of this application; Figure 4 This is a schematic diagram of a micro switch in a pop-up state and a pressed state provided in an exemplary embodiment of this application; Figure 5This is an exploded view of the button mechanism of a micro switch provided in an exemplary embodiment of this application; Figure 6 This is a schematic diagram illustrating the process of a micro switch switching between an off state and an on state according to an exemplary embodiment of this application; Figure 7 This is a cross-sectional schematic diagram of the button mechanism of a micro switch provided in an exemplary embodiment of this application; Figure 8 This is a schematic diagram of a switch with the button in an detached state according to an exemplary embodiment of this application; Figure 9 This is a schematic diagram of a button pressing a micro switch via a travel amplification structure, provided in an exemplary embodiment of this application; Figure 10 This is a schematic diagram illustrating the amplification of the pressing stroke of a button through a stroke amplification structure, provided in an exemplary embodiment of this application. Figure 11 This is a schematic diagram of a stroke amplification structure provided in an exemplary embodiment of this application; Figure 12 This is a schematic cross-sectional view of a switch in the yz plane provided in an exemplary embodiment of this application; Figure 13 This is a cross-sectional view of the switch on the xz plane when the button is in a non-pressed state and the micro switch is in an open state, according to an exemplary embodiment of this application. Figure 14 This is a cross-sectional view of the switch on the xz plane when the button is in a pressed state and the micro switch is in an on state, according to an exemplary embodiment of this application. Figure 15 This is a cross-sectional view of the switch on the xz plane when the button is in a non-pressed state and the micro switch is in an on state, according to an exemplary embodiment of this application. Figure 16 This is a circuit diagram illustrating a single switch arranged in a circuit to achieve single-control, as provided in an exemplary embodiment of this application. Figure 17 This is a circuit diagram illustrating two switches arranged in a circuit to achieve dual control, provided by an exemplary embodiment of this application.

[0024] Explanation of reference numerals in the attached figures 1. Base box; 11. Base; 12. Pressure plate; 13. Fixing bracket; 14. Cover plate; 141. Cutout; 2. Button; 21. First press protrusion; 3. Micro switch; 31. Button base; 32. Button; 33. Locking element; 34. Roller; 35. Moving contact; 36. First stationary contact; 37. Second stationary contact; 311, track; 321, pressing tooth; 322, first slide groove; 331, ratchet tooth; 332, second slide groove; L, common end; L1, NO end; L2, NC end; 4. Reset component; 5. Stroke amplification structure; 51. First part; 52. Second part; 521. Second pressing protrusion; 101, First hook; 201, Second hook. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0026] This embodiment relates to a switch, specifically a mechanical push-button switch. Currently, most of these switches use a rocker or oscillating mechanism to achieve on / off switching. These mechanisms are prone to overheating under high current, potentially causing arcing and burning of the contacts, thus reducing the switch's lifespan. Furthermore, the contact or separation of the internal rocker or oscillating moving and stationary contacts during power switching results in a loud dialing sound, which can disturb users' rest at night.

[0027] In addition, regardless of whether the rocker switch is on or off, the button always tilts up on one side and sinks down on the other, which affects the appearance and is accompanied by various problems such as large pressing distance and loud dialing sound.

[0028] If the electronic switch inside the switch adopts touch control, the cost of the switch will increase because some circuit components need to be built in.

[0029] Therefore, this embodiment provides a switch, which is also a mechanical push-button switch. The internal structure for achieving on / off switching is a micro switch. Traditional micro switches are momentary switches or sensitive switches; pressing them turns the circuit on, and releasing them turns it off. However, the micro switch in this embodiment has a mechanical self-locking function. Pressing the micro switch once locks it in one state (denoted as the pressed state), and pressing it again locks it in another state (denoted as the released state). The micro switch is connected in the circuit between the power supply and the controlled electrical appliance. Thus, by switching between the pressed and released states, the circuit can be controlled to switch between on and off states.

[0030] Because the micro switch has a self-locking function, the micro switch and the button do not need to be linked. After the button presses the micro switch, it can be reset by the action of the reset component, and the button does not need to be pressed down on the micro switch.

[0031] Thus, the button, acting as the transmission component that triggers the microswitch, immediately resets after being triggered, and the on / off state of the circuit is entirely maintained by the self-locking mechanism inside the microswitch. The collision sound between the moving and stationary contacts inside the microswitch is gentle, avoiding the loud clicking sound of traditional switches. Furthermore, the instantaneous action mechanism of the microswitch reduces arcing, slows down contact erosion, and extends the switch's lifespan.

[0032] Moreover, since the button only serves as a transmission component to trigger the micro switch and not as a structural component to maintain the circuit's on / off state, it can reset to its initial state after triggering the micro switch. For example, it can reset to be parallel to the mounting surface, making the switch a perfectly flat switch. This enhances the overall aesthetics of the wall and meets the modern interior decoration's aesthetic requirements for a simple and neat appearance.

[0033] The specific features of the switch provided in this embodiment are described below.

[0034] The switch provided in this embodiment can be installed on a wall or a desktop, etc. This type of switch is generally called a wall switch, or simply a wall switch.

[0035] If a switch is installed on a wall, then the surface on which the switch is installed is the wall. If a switch is installed on a desktop, then the surface on which the switch is installed is the desktop.

[0036] The switch provided in this embodiment can be a switch for controlling the on / off state of electrical appliances, such as a switch for controlling the on / off state of lighting, bathroom heaters, etc. The switch panel can have sockets, such as AC power sockets, DC power sockets, and various types of USB sockets. The switch provided in this embodiment can also be a switch for controlling the on / off state of a socket. For example, the switch button is arranged near the socket on the socket panel to control the on / off state of the socket. However, this embodiment does not limit the scope of the switch.

[0037] The switch provided in this embodiment can be a single switch or a multi-position switch. This embodiment does not limit this. In a single switch, the switch includes one button. In a multi-position switch, the switch includes multiple independent buttons. These buttons can be mounted side by side on the switch's base box.

[0038] like Figure 1 The diagram shown is an exploded view of the switch. Figure 2 The diagram shown is a schematic of the switch after assembly. Figure 1 and Figure 2 The same reference coordinate system is used in the schematic diagrams of the switches and subsequent switches. In this coordinate system, the thickness direction of the switch is the z-axis, and the plane where the button is in a flat state is the xy plane.

[0039] like Figure 1 And refer to Figure 2As shown, the switch includes a base box 1 and a button 2. The base box 1 is used to house the various components of the switch and is used to install it in a concealed box inside the wall.

[0040] like Figure 1 And refer to Figure 2 As shown, the base box 1 includes a base 11, a pressure plate 12, a fixing frame 13, and a cover plate 14. The base 11 has an open box-like structure, and the pressure plate 12 sits on the open part of the base 11. Generally, the side wall of the pressure plate 12 can be coplanar with the side wall of the base 11. The fixing frame 13 is fitted over the pressure plate 12 and has a mounting surface with mounting holes for installing the base box 1 in a recessed box inside the wall. The cover plate 14, also called an inner panel, face cover, or frame, covers the fixing frame 13 and is snap-fitted to the fixing frame 13 for easy disassembly.

[0041] Button 2 is sometimes also called a button, button panel, or switch button. Button 2 is mounted on the base box 1 and rotatably connected to the base box 1. For example, button 2 is mounted on the cover plate 14 and rotatably connected to the cover plate 14. In the rotatable connection between button 2 and cover plate 14, the pivot can be mounted on the cover plate 14, and the pivot hole can be located on the inner surface of button 2; or, the pivot can be mounted on the inner surface of button 2, and the pivot hole can be located on the cover plate 14.

[0042] It should be noted that the base 11 and the fixing frame 13 can also be integrated together. In the solution where the base 11 and the fixing frame 13 are integrated together, the pressure plate 12 is located in the base 11, and the outer surface of the side wall of the pressure plate 12 is not coplanar with the outer surface of the side wall of the base 11.

[0043] In one example, the switch also includes a functional device for performing the switching function, see reference. Figure 1 As shown, these functional devices may include a micro switch 3 and a terminal block. Both the micro switch 3 and the terminal block are located in the base 11. The side wall of the base 11 has a wiring hole, and the terminal of the terminal block is positioned opposite the wiring hole so that the power cord inside the wall passes through the wiring hole and is connected to the terminal block. Of course, the side wall of the base 11 also has an operating hole, and the terminal screw of the terminal block is positioned opposite the operating hole, making it convenient for the user to tighten the terminal screw.

[0044] Among them, the micro switch 3 is electrically connected to the terminal block. The micro switch 3 is connected to the circuit between the power supply line and the control appliance through the terminal block, and is used to control the connection and disconnection of the circuit.

[0045] In one example, microswitch 3 is a microswitch with a mechanical self-locking function. Pressing microswitch 3 once locks it in one state (such as the pressed state), and pressing it again switches it to another state (such as the released state). The switching between the pressed and released states allows the circuit to switch between an on and off state.

[0046] For example, a microswitch in the pressed state connects the connected circuit, and in the released state, it disconnects the connected circuit. Alternatively, a microswitch in the pressed state can disconnect the connected circuit, and in the released state, it can connect the connected circuit. Typically, a pressed microswitch indicates a connected circuit, and a released microswitch indicates a disconnected circuit. Therefore, in the following explanation, we can use the example of a microswitch in the pressed state connecting the connected circuit and in the released state disconnecting it (this is in a single-switch control circuit scenario; in a dual-switch control scenario, the circuit is connected when both switches are in the same state and disconnected when their states are opposite, which will be explained later).

[0047] Thus, button 2 can cover micro switch 3, serving as the trigger for the micro switch, used to press micro switch 3, causing micro switch 3 to switch between a pressed state and a released state. For example, when button 2 presses micro switch 3, micro switch 3 is locked in the pressed state; when button 2 presses micro switch 3 again, micro switch 3 is locked in the released state.

[0048] It should be noted that when button 2 presses microswitch 3, and when button 2 presses microswitch 3 again, it means that button 2 presses microswitch 3 once and then releases it, not that button 2 is continuously pressed on microswitch 3. For example, if the user presses button 2 once and then releases it, then button 2 will also release microswitch 3 by pressing it once.

[0049] In one example, a reset element 4 is arranged between the button 2 and the base box 1. The reset element 4 can be a telescopic spring, a metal spring, a plastic spring, a torsion spring, or some other elastic structure such as foam. The reset element 4 serves two purposes: it resets the button 2 and it provides a pressing feel. One end of the reset element 4 contacts the inner surface of the button 2, and the other end contacts the base box 1. For example, one end of the reset element 4 abuts against the inner surface of the button 2, and the other end abuts against the cover plate 14; or, one end of the reset element 4 abuts against the inner surface of the button 2, and the other end passes through the cover plate 14 and abuts against the internal structure of the base box 1. The arrangement of the reset element 4 will be described in detail later.

[0050] Based on the above, in a scenario where the user presses button 2 twice consecutively, the first press triggers button 2 to press microswitch 3, locking the microswitch in a certain state (e.g., the pressed state). The circuit containing the microswitch switches to the ON state, and after the external force on button 2 is released, it resets to its initial state under the action of reset component 4. The second press triggers button 2 to press microswitch 3, locking the microswitch in another state (e.g., the popped state). The circuit containing the microswitch switches to the OFF state, and after the external force on button 2 is released, it resets to its initial state under the action of reset component 4.

[0051] It is evident that the state of button 2 is independent of the circuit's on / off state, and button 2 can be reset to its initial state without external force.

[0052] In one example, after the switch is installed, button 2 can be parallel to the mounting surface. After the button 2 is released from pressure, button 2 can return to being parallel to the mounting surface.

[0053] The above is an overview of the overall characteristics of the switch. The following section introduces the characteristics of the microswitch inside the switch.

[0054] In one example, the micro switch includes a button mechanism with a mechanical self-locking function and a contact mechanism with a circuit switching function. The mechanical self-locking function refers to the self-locking function achieved through a mechanical structure.

[0055] Button 2 is used to press the button mechanism, while the contact mechanism is used to connect to the circuit between the power supply and the control appliance, for example, through a terminal block. The button mechanism and the contact mechanism are connected by a drive mechanism. When the button mechanism switches between the pressed and released states, it controls the contacts within the contact mechanism to switch between engagement and disengagement.

[0056] For example, the contact mechanism includes a movable contact and a first stationary contact. The button mechanism is connected to the movable contact in a driving manner. When the button mechanism switches between the pressed state and the released state, it can control the movable contact and the first stationary contact to switch between engagement and disengagement.

[0057] As an example, when the button mechanism is in the pressed state, the moving contact is engaged with the first stationary contact, and the circuit is in the on state. When the button mechanism is in the released state, the moving contact is disengaged from the first stationary contact, and the circuit is in the off state.

[0058] The contact mechanism may include only one stationary contact, namely the first stationary contact, or it may include two stationary contacts, referred to as the first stationary contact and the second stationary contact, respectively. Then, the movable contact can switch between engaging with the first stationary contact and engaging with the second stationary contact. In this case, switching the movable contact to engage with the second stationary contact is equivalent to switching it to disengage from the first stationary contact.

[0059] An example of a contact mechanism can be given, comprising a moving contact, a first stationary contact, and a second stationary contact. (See reference.) Figure 3 and Figure 4 As shown, the micro switch 3 includes a housing, a button mechanism, a moving contact 35, a first stationary contact 36, and a second stationary contact 37. The housing includes a left housing and a right housing, which are mounted together to form a cavity. The moving contact 35 and the two stationary contacts are mounted in the cavity formed by the left and right housings. The moving contact 35 has a moving contact, the first stationary contact 36 has a stationary contact on its surface facing the moving contact, and the second stationary contact 37 has a stationary contact on its surface facing the moving contact. The button mechanism is used to drive the moving contact 35 to swing, causing the moving contact on the moving contact 35 to contact the stationary contact on the first stationary contact 36 or the stationary contact on the second stationary contact 37, thereby switching the circuit on or off.

[0060] The contact mechanism includes a scheme with two stationary contacts, which can be applied in a single-switch, single-control scenario, where one switch controls the circuit's on / off state, or in a two-switch, dual-control scenario, where two switches control the circuit's on / off state.

[0061] refer to Figure 16 The circuit diagram shown illustrates a single-switch, single-control scenario. The moving contact 35 (represented by L in the diagram) is connected to the live wire of the power supply, the first stationary contact 36 (represented by L1 in the diagram) is connected to the wire of the controlled appliance, and the second stationary contact 37 (represented by L2 in the diagram) is idle and not connected. (Reference) Figure 17 The circuit diagram shown illustrates a two-way control scenario with two switches. The moving contact of switch A is connected to the live wire of the power supply, and the moving contact of switch B is connected to the wire of the controlled appliance. The first stationary contact 36 of switch A (represented by L1 in the diagram) is connected to the first stationary contact 36 of switch B, and the second stationary contact 37 of switch A (represented by L2 in the diagram) is connected to the second stationary contact 37 of switch B. When the two switches are in the same state—for example, both are pressed or both are released—the circuit is closed. When the two switches are in different states—for example, one is pressed and the other is released—the circuit is open.

[0062] Of course, in a dual-control scenario, if the stationary contacts of the two switches are cross-connected during wiring, that is, the first stationary contact of switch A is connected to the second stationary contact of switch B, and the second stationary contact of switch A is connected to the first stationary contact of switch B, then when the states of the two switches are opposite, the circuit is connected, and when the states of the two switches are the same, the circuit is disconnected.

[0063] It should be pointed out that, Figure 16 and Figure 17The diagram illustrates a switch connected to the live wire of a power supply. It's understood that the switch can also be connected to the neutral wire. For safety reasons, the switch can be placed on the live wire.

[0064] For ease of explanation, we can take a single-switch, single-control scenario as an example.

[0065] like Figure 4 And refer to Figure 3 As shown, one end of the conductive piece electrically connected to the moving contact 35 extends out of the housing of the microswitch 3, serving as the common terminal L. One end of the first stationary contact 36 extends out of the housing of the microswitch 3, serving as the normally open (NO) terminal. One end of the second stationary contact 37 extends out of the housing of the microswitch 3, serving as the normally closed (NC) terminal. Therefore, in the wiring, the common terminal L is connected to the live wire inside the wall, the wire connected to the controlled appliance is connected to the NO terminal L1, and the NC terminal L2 is unconnected.

[0066] So, reference Figure 4 As shown in (a), button 32 of the button mechanism is in the pop-up state, and the moving contact on the moving contact 35 is engaged with the stationary contact on the second stationary contact 37. At this time, the circuit is in the open state. (Reference) Figure 4 As shown in (b), button 32 is in the pressed state at this time, and the moving contact on the moving contact 35 is engaged with the stationary contact on the first stationary contact 36. At this time, the circuit is in the connected state.

[0067] Features of the button mechanism.

[0068] In one example, the button mechanism can achieve self-locking in two states through a ratchet mechanism. In another example, the button mechanism can also be achieved through a slider and locking groove mechanism. For example, when the button presses the slider, the elastic protrusion on the slider engages in a limiting hole on the inner wall of the groove, locking the button mechanism in one state (such as the pressed state). When the slider is pressed again, the elastic protrusion on the slider disengages from the original limiting hole and enters another limiting hole, locking the button mechanism in another state (such as the released state).

[0069] The following explanation uses the button mechanism as an example of a ratchet mechanism.

[0070] like Figure 5 The diagram shown is an exploded view of the button mechanism of micro switch 3. (Refer to...) Figure 5As shown, the button mechanism includes a button base 31, a button 32, and a locking member 33. The button base 31 is cylindrical with an opening at the top and an open bottom. The button 32 is located inside the button base 31, and the top of the button 32 extends beyond the top of the button base 31. The locking member 33 is located inside the button base 31, and the top of the locking member 33 is drivenly connected to the bottom of the button 32. The bottom of the locking member 33 is used to drively connect to the moving contact 35 to drive the moving contact 35 to swing. The button base 31, the button 32, and the locking member 33 are assembled coaxially.

[0071] The button 32 can move linearly relative to the button base 31, such as moving up and down along the pressing direction, which is parallel to the axis of the button 32. The locking member 33 can move up and down along the pressing direction and also rotate around its axis.

[0072] For example, when the user presses button 2, the drive button 32 moves linearly, and the locking member 33 first moves linearly and then rotates. When the external force is released and equilibrium is reached, the locking member 33 locks in the first position. At this time, the micro switch 3 is in the pressed state, that is, the button 32 is in the pressed state. When the user presses button 2 again, the drive button 32 moves linearly, and the locking member 33 first moves linearly and then rotates. When the external force is released and equilibrium is reached, the locking member 33 locks in the second position. At this time, the micro switch 3 is in the released state, that is, the button 32 is in the released state.

[0073] The above process is a cyclical process. When the user presses button 2, micro switch 3 switches to the pressed state. When the user presses button 2 again, micro switch 3 switches to the released state. Alternatively, the user presses button 2 once, micro switch 3 switches to the released state, and the user presses button 2 again, micro switch 3 switches to the pressed state. This micro switch 3 has a self-locking function. For example, when the user presses button 2, the drive button 32 moves linearly, and the locking member 33 first moves linearly and then rotates. When the external force is released and equilibrium is reached, the locking member 33 locks in the second position, at which point micro switch 3 is in the released state. When the user presses button 2 again, the drive button 32 moves linearly, and the locking member 33 first moves linearly and then rotates. When the external force is released and equilibrium is reached, the locking member 33 locks in the first position, at which point micro switch 3 is in the pressed state.

[0074] refer to Figure 5 As shown, the inner wall of the button base 31 has a track 311. The track 311 extends from the top wall of the button base 31 along the axial direction to the bottom and is shorter than the length of the button base 31. The bottom end of the track 311 does not extend to the bottom end of the button base 31.

[0075] refer to Figure 5As shown, the outer wall of button 32 has a groove (denoted as the first groove 322) and a pressing tooth 321. For example, the outer diameter of the part of button 32 near the bottom is larger, and the pressing tooth 321 and the first groove 322 extending through the height of this part are provided on this part. The first groove 322 is provided next to the pressing tooth 321, and the tip of the pressing tooth 321 faces the locking member 33.

[0076] refer to Figure 5 As shown, the outer wall of the locking member 33 also has a groove (denoted as the second groove 332) and a ratchet tooth 331. For example, the cylindrical locking member 33 has a smaller outer diameter near the top and a larger outer diameter near the bottom. A ratchet tooth 331 and a second groove 332 extending through the height of the larger outer diameter portion are provided on the larger outer diameter portion. The second groove 332 is also provided next to the ratchet tooth 331, and the tip of the ratchet tooth 331 faces the button 32.

[0077] The ratchet teeth differ from ordinary teeth. Ordinary teeth are symmetrical, while ratchet teeth are significantly asymmetrical, with a serrated shape. One side is a steep, straight surface, while the other side is a gentle slope, which can be spiral-shaped.

[0078] refer to Figure 5 As shown, the ratchet teeth 331 are in pairs, so that a recess can be formed between the roots of the two ratchet teeth 331 in a set of ratchet teeth 331.

[0079] like Figure 6 The image shows a scenario where button 32 switches between its pop-up and pressed states. (Reference) Figure 6 As shown in (a), (b), (c) and (d), the first groove 322 of the button 32 is always locked on the track 311 of the button seat 31, so the button 32 is limited to move up and down along the axis.

[0080] like Figure 6 And refer to Figure 5 As shown, button 32 is fitted over the small outer diameter portion of locking member 33. The pressing teeth 321 of button 32 are connected to the ratchet teeth 331 of locking member 33. For example, the tip of the pressing teeth 321 abuts against the inclined surface of ratchet teeth 331. The abutting is due to the bottom of locking member 33 abutting against moving contact piece 35, which has a certain elasticity, causing locking member 33 to provide force to button 32.

[0081] Among them, the pressing tooth 321 and the ratchet tooth 331 are not fully engaged. The tip of the pressing tooth 321 abuts against the inclined surface of the ratchet tooth 331. When the button 32 presses the locking member 33 in a linear motion, the locking member 33 will be subjected to a downward oblique force. When the locking member 33 releases the circumferential limit from the button seat 31, this downward oblique force can cause the locking member 33 to rotate.

[0082] The process of button 32 switching from the pop-up state to the pressed state can be referred to Figure 6 (a), (b), (c), and (d) in the example.

[0083] refer to Figure 6 As shown in (a), button 32 is in the pop-up state at this time, which can be referred to Figure 5 As shown, button 32 is hung on the top wall of button base 31 at the bottom with a large outer diameter portion, so button 32 will not detach from button base 31.

[0084] The user presses button 2, for reference. Figure 6 As shown in (a) and (b), button 32, pressed by button 2, moves downward along the axial direction, pushing locking member 33 downward along the axial direction. (Reference) Figure 6 As shown in (b), when the locking member 33 moves to the bottom end of the track 311 on the button seat 31 and disengages from the second slide groove 332 on the locking member 33, the locking member 33 and the button seat 31 are released from circumferential restriction. The button 32 continues to press the locking member 33, refer to... Figure 6 As shown in (b) and (c), the locking member 33 rotates until the bottom end of the track 311 aligns with the recess between the roots of the two ratchet teeth 331. Even if initially misaligned, it will align under the action of the inclined plane. The user can release the button by pressing it once; the external force is released, the button 32 stops pressing the locking member 33, and the locking member 33 returns to its axial position under the force of the moving contact 35. (Reference) Figure 6 As shown in (c) and (d), the locking member 33 is reset upwards until the bottom end of the track 311 abuts against the recess of the two ratchet teeth 331 of the locking member 33. At this time, the button seat 31 limits the locking member 33 axially and circumferentially, so that the locking member 33 cannot continue to reset upwards or rotate. Therefore, the locking member 33 is locked at the current position (i.e., the first position mentioned above). At this time, the button 32 is locked in the pressed state.

[0085] The process of button 32 switching from the pressed state to the released state can be referred to Figure 6 (d), (c), (b) and (a) in the example.

[0086] The user presses button 2, see reference. Figure 6 As shown in (d) and (c), button 32, pressed by button 2, moves downward along the axial direction, pushing locking member 33 downward along the axial direction. (Reference) Figure 6 As shown in (c), the bottom end of track 311 disengages from the recess between the two ratchet teeth 331, and the locking member 33 is released from its circumferential restraint on the button seat 31. Button 32 continues to press the locking member 33, refer to... Figure 6As shown in (c) and (b), the locking member 33 undergoes rotational movement, referencing... Figure 6 As shown in (b), the locking member 33 will rotate until the track 311 and the second slide groove 332 are approximately aligned axially. Even if they are not aligned, they will rotate to alignment under the action of the inclined plane. When the user presses the button and releases it, the external force is released, the button 32 stops pressing the locking member 33, and under the force of the moving contact piece 35 and the constraint of the track 311 and the second slide groove 332, the locking member 33 resets upward along the axial direction, pushing the button 32 upward during the upward reset. (Reference) Figure 6 As shown in (b) and (a), when button 32 moves upward to abut against the top wall of button seat 31, it stops moving. At this time, locking member 33 cannot continue to move upward or rotate, and is locked in the current position (i.e., the second position mentioned above). At this time, button 32 is locked in the pop-up state.

[0087] In one example, reference Figure 6 As shown, the bottom end face of the track 311 is an inclined surface, so that when the track 311 is not aligned with the second slide groove 332, the inclined surface of the track 311 and the inclined surface of the ratchet tooth 331 cooperate to allow the track 311 to enter the second slide groove 332. Similarly, also so that when the track 311 is not aligned with the recesses of the two ratchet teeth 331, the inclined surface of the track 311 and the inclined surface of the ratchet tooth 331 cooperate to allow the bottom end of the track 311 to be locked in the recess.

[0088] It should be pointed out that, Figure 6 The process from (d) to (a) is not the reverse process from (a) to (d). The process from (d) to (a) is the engagement process of the next set of pressing teeth, ratchet teeth, track, and slide.

[0089] refer to Figure 5 As shown, there are multiple pressing teeth 321 on the button 32. These multiple pressing teeth 321 are distributed discretely along the circumferential direction. A first groove 322 is arranged next to one side of each pressing tooth 321. The purpose of each pressing tooth 321 is to press the locking member 33, so that the locking member 33 moves.

[0090] The locking member 33 has multiple sets of ratchet teeth 331. Each set of ratchet teeth 331, as described above, includes two adjacent ratchet teeth 331. These multiple sets of ratchet teeth 331 are discretely distributed along the circumferential direction. A second groove 332 is arranged on one side of each set of ratchet teeth 331, adjacent to the ratchet teeth 331. The number of pressing teeth 321 is equal to the number of sets of ratchet teeth 331. The purpose of the ratchet teeth 331 is to rotate the locking member 33 to change the limiting state between the locking member 33 and the button seat 31, so that the locking member 33 can be locked in different positions. The number of first grooves 322 and second grooves 332 is equal.

[0091] The button base 31 has multiple tracks 311, which are discretely distributed along the circumference. The number of tracks 311 is equal to the number of first grooves 322.

[0092] For example, there are four tracks 311, evenly distributed along the circumference. There are four first grooves 322, evenly distributed along the circumference. There are four second grooves 332, evenly distributed along the circumference. There are four pressing teeth 321, evenly distributed along the circumference, arranged adjacent to the first grooves 322. There are four sets of ratchet teeth 331, evenly distributed along the circumference, with one set of ratchet teeth 331 adjacent to one second groove 332.

[0093] In one example, the locking element 33 always rotates in one direction within the button seat 31, see reference. Figure 6 As shown, the locking member 33 rotates counterclockwise during rotation. Whether the locking member 33 rotates counterclockwise or clockwise depends mainly on the inclination of the ratchet teeth 331. This embodiment does not limit whether the locking member 33 rotates counterclockwise or clockwise.

[0094] As described above, the locking member 33 is connected to the moving contact 35. For example, when the locking member 33 is at the bottom facing away from the button 32 and abuts against the moving contact 35, and the locking member 33 is locked in the first position, the moving contact 35 swings until the moving contact engages with the stationary contact of the first stationary contact 36, and the NO terminal L1 is on the first stationary contact 36. Therefore, at this time, the micro switch 3 is in the ON state. When the locking member 33 is locked in the second position, the moving contact 35 swings until the moving contact engages with the stationary contact of the second stationary contact 37, and the NC terminal L2 is on the second stationary contact 37. Therefore, at this time, the micro switch 3 is in the OFF state.

[0095] Since the locking member 33 is in direct contact with the moving contact 35, the moving contact 35 will generate significant frictional resistance to the rotation of the locking member 33. Therefore, refer to... Figure 7As shown, the micro switch 3 also includes a roller 34. The bottom end of the locking member 33 has a mounting hole. The roller 34 is inserted into the mounting hole, and the bottom end face of the roller 34 extends out of the mounting hole but is lower than the bottom end face of the locking member 33. The bottom end of the roller 34 abuts against the moving contact 35, so that the locking member 33 abuts against the moving contact 35 through the roller 34. The mounting hole is also filled with lubricant, for example, the gap between the outer wall of the roller 34 and the inner wall of the mounting hole is filled with lubricant. Therefore, the locking member 33 will not generate frictional resistance with the moving contact 35 during rotation. Although the locking member 33 will rotate relative to the roller 34, the frictional resistance between the locking member 33 and the roller 34 is small under the action of lubricant, making the rotation of the locking member 33 smoother and improving the service life of the micro switch 3.

[0096] In one example, since there is lubricant inside the mounting hole where roller 34 is located, to prevent the lubricant from flowing out of the mounting hole, the following can be referred to: Figure 7 As shown, the gap between the outer wall of the roller 34 and the inner wall of the mounting hole is smaller at the opening of the mounting hole to prevent lubricant from flowing out at the opening. For example, see reference... Figure 7 As shown, the inner diameter of the mounting holes is the same at all positions, while the outer diameter of the roller 34 is larger at both ends.

[0097] The above is an introduction to the features of micro switch 3. The following section will introduce the flat characteristics of the switch in conjunction with micro switch 3.

[0098] In one example, button 2 can directly press button 32. In another example, button 2 can also indirectly press button 32. Because the micro switch 3 is located below the cover plate 14, whether button 2 directly or indirectly presses button 32, the cover plate 14 has a cutout 141 at the position corresponding to button 32, so that button 32 is exposed from below the cover plate 14 through the cutout 141.

[0099] In the scheme where button 2 directly presses button 32, button 2 has a first pressing protrusion 21 on the surface facing button 32. Alternatively, button 32 has a first pressing protrusion 21 on the surface facing button 2. Alternatively, both button 2 and button 32 have first pressing protrusions 21 on their facing surfaces. Button 2 presses button 32 at the first pressing protrusion 21.

[0100] In the scheme where button 2 indirectly presses button 32, refer to Figure 8 As shown, the switch also includes a travel amplification structure 5. (Reference) Figure 11As shown, the stroke amplification structure 5 can be sheet-like, making it a swing plate. In another example, the stroke amplification structure 5 can also be strip-like, making it a swing arm. The sheet-like shape of the stroke amplification structure 5 allows it to cover the button 32, making it easier to press. This embodiment does not limit the specific shape of the stroke amplification structure 5; the figures may show... Figure 11 The sheet-like example shown.

[0101] refer to Figure 8 As shown, the stroke amplification structure 5 is located within the hollow area 141 of the cover plate 14, for reference. Figure 9 As shown, one end of the travel amplification structure 5 is rotatably connected to the cover plate 14, and the other end is used to press the button 32. Therefore, when the user presses button 2, button 2 presses button 32 through the travel amplification structure 5. This allows button 2 to drive the micro switch 3 to switch on and off with a relatively small pressing stroke.

[0102] It should be noted that the stroke amplification structure 5 can be rotatably connected to the cover plate 14. Alternatively, the stroke amplification structure 5 can be rotatably connected to the button 2. This embodiment does not limit this; the stroke amplification structure 5 can rotate to press the button 32. The following illustration shows the rotatable connection between the stroke amplification structure 5 and the cover plate 14. This can be achieved by having a rotating shaft on the stroke amplification structure 5 and a rotating shaft hole on the cover plate 14, or vice versa, with the stroke amplification structure 5 having a rotating shaft hole and the cover plate 14 having a rotating shaft. Alternatively, both the stroke amplification structure 5 and the cover plate 14 may have rotating shaft holes, with the rotating shaft passing through the rotating shaft holes of the stroke amplification structure 5 and the cover plate 14. This embodiment does not limit how the stroke amplification structure 5 and the cover plate 14 achieve the rotatable connection.

[0103] In the scheme where button 2 presses button 32 of micro switch 3 via travel amplification structure 5, a first pressing protrusion 21 can be provided on the surface of button 2 facing travel amplification structure 5, or the first pressing protrusion 21 can be provided on the surface of travel amplification structure 5 facing button 2, or the first pressing protrusion 21 can be provided on both the surfaces of button 2 and travel amplification structure 5 facing each other. Button 2 presses travel amplification structure 5 at the first pressing protrusion 21, driving travel amplification structure 5 to press button 32. This embodiment does not limit the location of the first pressing protrusion 21; the attached figure shows an example where it is located on the surface of button 2.

[0104] In one example, reference Figure 9 As shown, the cross-sectional shape of the first pressing protrusion 21 is triangular, wherein the plane containing the cross-section of the first pressing protrusion 21 is perpendicular to the axis of rotation that causes the stroke amplification structure 5 to rotate.

[0105] In the scheme where the travel amplification structure 5 presses the micro switch 3, a second pressing protrusion 521 can be provided on the button 32 of the travel amplification structure 5 and / or the micro switch 3. For example, refer to Figure 9 As shown, a second pressing protrusion 521 is provided on the surface of the travel amplification structure 5 facing the button 32. Alternatively, the second pressing protrusion can also be provided on the surface of the button 32 facing the travel amplification structure 5. Or, for example, the second pressing protrusion can be provided on both the surfaces of the travel amplification structure 5 and the button 32 that face each other. In this way, the travel amplification structure 5 presses the button 32 at the second pressing protrusion. This embodiment does not limit the location of the second pressing protrusion 521; the accompanying drawings show an example where it is located on the surface of the travel amplification structure 5.

[0106] In one example, reference Figure 9 As shown, the cross-sectional shape of the second pressing protrusion 521 can be trapezoidal, such as an inverted trapezoid, to increase the contact area between the travel amplification structure 5 and the button 32. The plane containing the cross-section of the second pressing protrusion 521 is perpendicular to the axis of rotation that causes the travel amplification structure 5 to rotate.

[0107] It should be noted that you can refer to Figure 9 As shown, the second pressing protrusion 521 can penetrate through the width direction of the stroke amplification structure 5, which is the y-axis direction in the figure.

[0108] like Figure 9 And refer to Figure 10 As shown, the pressing position of button 2 on the surface of travel amplification structure 5 is located between the pivot position between travel amplification structure 5 and cover plate 14, and the contact position between travel amplification structure 5 and button 32. That is, the contact position between the first pressing protrusion 21 and travel amplification structure 5 is located between the pivot position that causes travel amplification structure 5 to rotate and the contact position between the second pressing protrusion 521 and button 32.

[0109] Therefore, based on the lever principle, F1×L1=F2×L2, where F1 is the power source, which comes from the user's pressing, F2 is the resistance, L1 is the power arm, and L2 is the resistance arm.

[0110] refer to Figure 10 As shown, the micro switch 3 is switched to the pressed state. The pressing stroke of the stroke amplification structure 5 is approximately the pressing stroke of the button 32, denoted as S2, while the pressing stroke of the button 2 is approximately the pressing stroke of the first pressing protrusion 21, denoted as S1. Figure 10 The solid line represents the center line of the travel amplification structure 5 before pressing, and the dashed line represents the center line of the travel amplification structure 5 when the micro switch is turned on by pressing.

[0111] refer to Figure 10As shown, the closer the first pressing protrusion 21 is to the pivot point of the travel amplification structure 5, the shorter the press travel of button 2, but the greater the pressing force required to press button 2. Conversely, the farther the first pressing protrusion 21 is from the pivot point, the lighter the force required to press button 2, but the greater the press travel of button 2. Therefore, the position of the first pressing protrusion 21 on button 2 is crucial to achieve a balance between pressing travel and pressing force.

[0112] For example, you can refer to Figure 10 As shown, the first pressing protrusion 21 on button 2 can be positioned in the middle or near the middle of the travel amplification structure 5. This achieves both a shorter travel distance for dialing button 2 and effortless dialing for the user. Furthermore, the shorter dialing travel of button 2 also reduces the noise produced during dialing.

[0113] Continue to refer to Figure 9 As shown, the stroke amplification structure 5 may include an adjacent first part 51 and a second part 52. The first part 51 is used to realize a rotational connection, and the second part 52 is used to realize the pressing button 32. The second pressing protrusion 521 mentioned above is provided on the surface of the second part 52 facing the button 32. The thickness of the first part 51 is greater than the thickness of the second part 52, and the thickness of the part between the first part 51 and the second part 52 gradually changes.

[0114] The first part 51 is used to realize the rotational connection. It is the area where the stroke amplification structure is most concentrated when rotating and under stress. The first part 51 is thicker, which can reduce stress concentration and prevent fatigue fracture of the stroke amplification structure 5 under high-frequency rotation and pressure.

[0115] like Figure 11 And refer to Figure 9 As shown, the thickness of the first part 51 of the stroke amplification structure 5 also exhibits a gradual change, with a relatively gentle gradient. The thickness of the first part 51 of the stroke amplification structure 5 is greatest at the position corresponding to the first pressing protrusion 21 and smallest at the position corresponding to the pivot. The stroke amplification structure 5 experiences the strongest force at the position corresponding to the first pressing protrusion 21. Designing the thickness of the stroke amplification structure 5 at this position as the thickest provides the maximum bending section modulus and effectively resists the maximum bending stress. The pivot is the rotation center of the stroke amplification structure 5. Designing the thickness of the area near the pivot reduces the mass of the stroke amplification structure 5 near the pivot to the greatest extent. According to the principles of physics, this significantly reduces the overall rotational inertia of the stroke amplification structure 5. The smaller the rotational inertia, the faster the response of the stroke amplification structure 5 when pressed by the user, the lighter the feel, and it also reduces the impact wear on the pivot and microswitch.

[0116] The gradual change in thickness between the first part 51 and the second part 52 can guide the smooth transmission of stress, avoid local stress peaks caused by abrupt changes in cross-section, and further improve the overall structural strength and service life.

[0117] The main function of the second part 52 is to trigger the microswitch 3. It bears a relatively small mechanical load, and its thin design significantly reduces unnecessary material redundancy while still meeting triggering strength requirements. This effectively reduces the overall weight and rotational inertia of the stroke amplification structure 5, making it more flexible and faster in rotation.

[0118] The second part 52 used to press the micro switch is thinner, which can save space in the thickness direction, which is conducive to the compact layout inside the switch, and can leave more installation space for the micro switch, which is conducive to the overall thin and light design of the switch.

[0119] In one example, the switch can be either a full-area pressable switch or a one-sided pressable switch. A full-area pressable switch means that when the user presses button 2 from any position, button 2 transmits the pressure to the travel amplification structure 5, which then triggers the micro switch 3 to switch. A one-sided pressable switch means that the user presses button 2 from only one side, and button 2 only transmits the pressure to the travel amplification structure 5, which then triggers the micro switch 3 to switch.

[0120] In the full-area pressing scheme, button 2 can press the travel amplification structure 5 through a transmission component. The transmission component is located between button 2 and travel amplification structure 5. The transmission component is used to enable button 2 to be pressed at any position, and button 2 can transmit the force to travel amplification structure 5.

[0121] This embodiment does not limit whether the switch is pressed across the entire area or on one side; it can be used as an example of pressing on one side.

[0122] You can refer to this. Figure 8 and Figure 9 As shown, in the single-sided pressing design, one side of button 2 is rotatably connected to cover plate 14, and the opposite side is used for pressing the travel amplification structure 5. Thus, button 2 can have a rotating side and a pressing side. The first pressing protrusion 21 mentioned above is located on the pressing side, and the travel amplification structure 5 is also arranged on the pressing side of button 2. The rotating side and the pressing side can be divided along the center line of button 2 along the y-axis direction, with one side of this center line being the rotating side and the opposite side being the pressing side.

[0123] Since the reset component 4 is used to reset the button 2 after it is released from pressure, in the single-sided pressing scheme, the reset component 4 resets the part of the button 2 that was pressed. Therefore, the reset component 4 is arranged on the pressing side of the button 2.

[0124] Both the travel amplification structure 5 and the reset element 4 are arranged on the pressing side of the button 2, and their positions are adjacent. For a single reset element 4: (1) The reset element 4 can be arranged on the side in the width direction of the travel amplification structure 5. In this case, one end of the reset element 4 abuts against the surface of the button 2, and the other end abuts against the surface of the cover plate 14; (2) One end of the reset element 4 can abut against the surface of the button 2, and the other end passes through the travel amplification structure 5 and abuts against the structure inside the bottom box 1.

[0125] refer to Figure 8 and Figure 12 As shown, the switch is a three-position switch, including three buttons 2. Below each button 2, on the pressing side, are two reset elements 4. Thus, the number of reset elements 4 is multiple. (Reference) Figure 8 and Figure 12 As shown, a portion of the reset element 4 abuts between the button 2 and the cover plate 14. These reset elements 4 are all located on the side of the travel amplification structure 5, and the reset elements 4 and the travel amplification structure 5 do not interfere with each other. (Continue to refer to...) Figure 8 and Figure 12 As shown, another part of the reset component 4 abuts against the button 2 at one end, and passes through the travel amplification structure 5 at the other end, abutting against the structure inside the base box 1. In order for the reset component 4 to pass through the travel amplification structure 5, as shown in the figure, the travel amplification structure 5 has a through-thickness cutout.

[0126] In one example, to allow the reset member 4 to abut against the interior of the base box 1, the base box 1 may have a pillar extending to the cutout of the stroke amplification structure 5 for the reset member 4 to abut against. (See reference...) Figure 12 As shown, below the cover plate 14 is the pressure plate 12, which has an upwardly extending column that extends all the way to the cutout of the stroke amplification structure 5.

[0127] refer to Figure 8 As shown, the surface of the cover plate 14 may have a recess, and the reset member 4 can be arranged in the recess. The recess limits and positions the reset member 4, facilitating assembly. In one example, refer to... Figure 12 As shown, the inner surface of button 2 may have a spring post, and the elastic element of the spring can be sleeved on the spring post on the inner surface of button 2.

[0128] refer to Figure 8 As shown, the reset piece 4 is not arranged within the cutout of the travel amplification structure 5 in the middle position. This cutout may be to prevent the button 2 from being fastened to the internal structure of the base box 1. For example, refer to Figure 12As shown, the inner surface of button 2 has a second hook 201, and the inside of the base box 1 has a first hook 101. The second hook 201 on button 2 is opposite to the first hook 101 inside the base box 1. The first hook 101 inside the base box 1 extends upward to the hollow of the stroke amplification structure 5 at the middle position. In this way, the second hook 201 on button 2 and the first hook 101 of the base box 1 are interlocked. Therefore, when the reset member 4 causes button 2 to reset, it will not cause button 2 to reset too much, causing button 2 to reset to the point where the pressing side is tilted up relative to the mounting surface. Thus, it is beneficial to reset button 2 to be parallel to the mounting surface.

[0129] The button 2 and the base box 1 have a first hook 101 and a second hook 201 on the pressing side for mutual positioning. Then, the reset piece 4 can abut between the button 2 and the base box 1. When the button 2 is parallel to the mounting surface, the reset piece 4 is also in a compressed state.

[0130] In one example, to allow button 2 to rotate, one can refer to... Figure 2 As shown, there is a gap H between the button 2 and the cover plate 14 that allows the button 2 to rotate. The gap H gradually increases from the rotation side of the button 2 to the pressing side.

[0131] In one example, reference Figure 2 As shown, button 2 is a flat plate, and cover plate 14 has side walls around its perimeter. Therefore, the gap between button 2 and cover plate 14 is the gap between button 2 and the side wall of cover plate 14.

[0132] In another example, button 2 has a sidewall and cover plate 14 is a flat plate. Then, the gap between button 2 and cover plate 14 is the gap between the sidewall of button 2 and cover plate 14.

[0133] This embodiment does not limit whether the sidewall is provided on the button 2 or on the cover plate 14; it can be exemplified by the cover plate 14 having a sidewall.

[0134] The two sidewalls of the cover plate 14 in the x-axis direction can be referred to as the first sidewall and the second sidewall, respectively. The first sidewall is on the rotating side of the button 2, and the second sidewall is on the pressing side of the button 2. The sidewalls of the cover plate 14 in the y-axis direction can be referred to as the third sidewall and the fourth sidewall.

[0135] Therefore, the height of the first sidewall of the cover plate 14 is greater than the height of the second sidewall, and the heights of the third and fourth sidewalls are the same, and both gradually decrease from the rotating side of the button 2 to the pressing side.

[0136] It should be noted that the cover plate 14 may also be without a side wall on the pressing side of the button 2, that is, the cover plate 14 has only a first side wall in the x-axis direction and no second side wall.

[0137] In this way, when the pressing side of button 2 is pressed compared to the rotating side, the side wall of cover plate 14 on the pressing side will not interfere with the pressing of button 2.

[0138] like Figures 13 to 15 The diagram shows the three states of the switch. (As shown...) Figure 13 As shown, the switch 2 is in cross-sectional view on the xz plane before it is pressed. Figure 14 As shown, this is a cross-sectional view of the switch in the xz plane when button 2 is pressed and the user has not yet lifted their hand. Figure 15 As shown, button 2 was pressed and the user has lifted their hand, button 2 has been reset, and the switch is shown in a cross-sectional view on the xz plane.

[0139] refer to Figure 13 As shown, under the limit of the reset piece 4 and the first hook and the second hook, the button 2 is in a flat state. At this time, the button 32 of the micro switch 3 is in a pop-up state, the moving contact on the moving contact piece 35 is in contact with the stationary contact on the second stationary contact piece 37 which is not connected to the circuit, and the circuit where the switch is located is in an open state.

[0140] When the user presses button 2, refer to Figure 14 As shown, when button 2 is pressed on the pressing side, the drive stroke amplification structure 5 presses button 32 of micro switch 3, causing button 32 to be pressed. Roller 34 pushes moving contact 35 downward, and the moving contact on moving contact 35 switches to contact with the stationary contact on the first stationary contact 36 connected to the circuit. At this time, the circuit where the switch is located is in the on state. After the user lifts their hand, the pressure on button 2 is released. (Refer to...) Figure 15 As shown, button 2 is reset to a flat state under the action of reset component 4. However, because the locking component 33 of micro switch 3 can be locked in the first position, the circuit where the switch is located remains in the on state, while the stroke amplification structure 5 remains in the downward state.

[0141] switch in Figure 15 In the state shown, when the user presses button 2 again, it can be referred to Figure 14 As shown, button 2 first travels a short distance without contacting the travel amplification structure 5 (because the first pressing protrusion 21 of button 2 is not in contact with the travel amplification structure 5, it needs to make contact first before the travel amplification structure 5 can be pressed). After button 2 completes its short travel, the first pressing protrusion 21 of button 2 presses the travel amplification structure 5, which in turn presses button 32, causing button 32 to be pressed down first to release the limit on the locking member 33. After the locking member 33 is released, the moving contact 35 will spring back upward, causing the moving contact on the moving contact 35 to switch to contact the stationary contact on the second stationary contact 37, which is not connected to the circuit. At this time, the circuit where the switch is located is disconnected. During the upward spring of the moving contact 35, the button 32 will be reset to the pop-up state. Because the locking member 33 can be locked in the second position, the circuit where the switch is located can remain in the disconnected state.

[0142] In this embodiment, the internal circuit switching mechanism of the switch is a microswitch. This microswitch has a mechanical self-locking function. Pressing the microswitch once locks it in one state (denoted as the pressed state), and pressing it again locks it in another state (denoted as the released state). When this microswitch is connected to the circuit between the power supply and the controlled appliance, the switching between the pressed and released states of the microswitch controls the switching between the on and off states of the circuit. Thus, the button acts as the actuator to trigger the microswitch, immediately resetting after triggering. The on / off state of the circuit is entirely maintained by the internal self-locking mechanism of the microswitch.

[0143] The collision between the moving and stationary contacts inside the micro switch produces a soft sound, avoiding the loud noise of traditional mechanical switches.

[0144] Moreover, since the button only serves as a transmission component to trigger the micro switch and not as a structural component to maintain the circuit's on / off state, it can reset to its initial state after triggering the micro switch. For example, it can reset to be parallel to the mounting surface, making the switch a perfectly flat switch. This enhances the overall aesthetics of the wall and meets the modern interior decoration's aesthetic requirements for a simple and neat appearance.

[0145] In addition, the micro switch is assembled as an independent module inside the switch, which is easier to assemble than the rocker assembly. This facilitates automated assembly and thus helps reduce assembly costs.

[0146] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this application should be included within the protection scope of this application.

Claims

1. A switch, characterized by The switch comprises a bottom box (1), a key (2), a micro switch (3) and a reset member (4); The micro switch (3) is located in the bottom box (1), the key (2) is arranged on the bottom box (1) and is rotationally connected with the bottom box (1), and the reset member (4) is located between the key (2) and the bottom box (1); The key (2) is used for pressing the micro switch (3), when the key (2) presses the micro switch (3), the micro switch (3) is locked in a pressed state, and when the key (2) presses the micro switch (3) again, the micro switch is locked in a popped-up state; The micro switch (3) is used for being connected into a circuit between a power line and a controlled electrical appliance, and by switching between the pressed state and the popped-up state, the micro switch controls the on-off of the circuit.

2. The switch of claim 1, wherein When the key (2) is pressed, the reset member (4) is in a compressed state, and when the pressing on the key (2) is released, the key (2) is reset to be parallel to the installation surface of the switch under the action of the reset member (4).

3. The switch of claim 1, wherein The switch further comprises a stroke amplification structure (5), the stroke amplification structure (5) is rotationally installed between the key (2) and the bottom box (1), the key (2) presses a button (32) of the micro switch (3) through the stroke amplification structure (5), and the stroke amplification structure is used for reducing the pressing stroke of the key (2).

4. The switch of claim 3, wherein The bottom box (1) comprises a cover plate (14), and the cover plate (14) has a hollow portion (141); The cover plate (14) covers the micro switch (3), and the button (32) is exposed through the hollow portion (141); The stroke amplification structure (5) is located in the hollow portion (141), one end of the stroke amplification structure (5) is located on the button (32) of the micro switch (3) and is used for pressing the button (32), and the other end of the stroke amplification structure (5) is rotationally connected with the cover plate (14) or the key (2); The key (2) covers the cover plate (14) and is rotationally connected with the cover plate (14).

5. The switch of claim 3, wherein A first pressing protrusion (21) is arranged between a contact position between the stroke amplification structure (5) and the button (32) and a position of a rotation shaft for rotating the stroke amplification structure (5), and the key (2) presses the stroke amplification structure at the first pressing protrusion (21). The first pressing protrusion (21) is arranged on a surface of the key (2) facing the stroke amplification structure (5), or is arranged on a surface of the stroke amplification structure facing the key (2), or the first pressing protrusion (21) is arranged on the surfaces of the key (2) and the stroke amplification structure facing each other.

6. The switch of claim 3, wherein A second pressing protrusion is arranged on a surface of the stroke amplification structure (5) facing the button (32) and / or a surface of the button (32) facing the stroke amplification structure, and the stroke amplification structure (5) presses the button (32) at the second pressing protrusion.

7. The switch of claim 3, wherein The stroke amplification structure (5) comprises a first part (51) and a second part (52) connected to each other, the first part (51) is used for rotary connection, and the second part (52) is used for pressing the button (32) of the micro switch (3); The thickness of the first part (51) is greater than the thickness of the second part (52), and the thickness of the part between the first part (51) and the second part (52) gradually changes.

8. The switch of claim 4, wherein The reset member (4) and the stroke amplification structure (5) are located adjacent to each other; The reset member (4) is located at the side of the stroke amplification structure (5) in the width direction and abuts between the key (2) and the cover plate (14), wherein the width direction of the stroke amplification structure (5) is perpendicular to the rotation axis of the stroke amplification structure (5); Alternatively, one end of the reset member (4) abuts on the key (2), and the other end passes through the stroke amplification structure (5) and abuts on the structure inside the bottom box (1).

9. A switch according to any one of claims 3 to 8, characterised in that, The stroke amplification structure (5) is a swing piece in a sheet shape, and the stroke amplification structure (5) covers the button (32) of the micro switch (3) at the part close to the end.

10. The switch of claim 1, wherein The micro switch comprises a button mechanism with a mechanical self-locking function and a contact piece mechanism with a circuit on-off function; The contact piece mechanism comprises a moving contact piece (35) and a first stationary contact piece (36), and the button mechanism and the moving contact piece (35) are in transmission connection; The key (2) is used for pressing the button mechanism, so that the button mechanism is switched between the pressed state and the popped-up state, so as to control the moving contact piece (35) and the first stationary contact piece (36) to be switched between combination and separation, thereby realizing the on-off of the circuit.

11. The switch of claim 10, wherein The button mechanism comprises a button (32) and a locking member (33) with ratchet teeth, the button (32) is used for pressing the ratchet teeth of the locking member (33), so that the locking member (33) is locked in a first position or a second position, and the locking member (33) and the moving contact piece (35) are in transmission connection; When the locking member (33) is locked in the first position, the button (32) is in the pressed state, and the moving contact piece (35) is combined with the first stationary contact piece (36); When the locking member (33) is locked in the second position, the button (32) is in the popped-up state, and the moving contact piece (35) is separated from the first stationary contact piece (36).

12. The switch of claim 11, wherein, The bottom of the locking member (33) facing the moving contact piece (35) has a mounting hole, a roller (34) is arranged in the mounting hole, a lubricant is filled between the roller (34) and the hole wall of the mounting hole, the bottom end face of the roller (34) protrudes out of the mounting hole and abuts on the moving contact piece (35).

13. The switch of claim 1, wherein The bottom box (1) comprises a cover plate (14), and the key (2) covers the cover plate (14); The first side of the key (2) is in rotary connection with the cover plate (14), the second side of the key (2) is used for pressing the micro switch (3), and the first side and the second side of the key (2) are opposite to each other. There is a gap (H) between the button (2) and the cover plate (14) to allow the button (2) to rotate, and the gap (H) gradually increases from the first side of the button (2) to the second side of the button (2).

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