Push type switch with level linkage function

Abstract

The invention provides a push type switch with a level linkage function, which comprises a shell, a push assembly, a contact module and a locking reset module, and is characterized in that the push assembly comprises a push button, a connecting rod and a convex clamping block, and the push button is arranged at the top end of the connecting rod; the connecting rod is arranged in the cavity of the shell in the axis direction of the shell and can reciprocate in the axis direction of the shell. The protruding clamping block is located on the outer side wall of the connecting rod and used for being clamped with the first clamping groove or the second clamping groove. The contact module comprises a first contact group and a second contact group which are arranged at an interval along the axis direction of the shell; the locking reset module is connected with the pressing button and used for locking the state of the pressing assembly when the pressing assembly moves to different positions and controlling the on-off state of the first contact set and the second contact set in cooperation with movement of the pressing assembly. The technical problem that in the prior art, a push type switch cannot achieve high and low level switching in a closed state can be solved.

Description

Technical Field

[0001] This invention belongs to the field of electrical switch technology, and particularly relates to a push-button switch with level linkage function. Background Technology

[0002] In electrical control, electronic equipment, and other fields, push-button switches are a commonly used control element, widely used for circuit on / off control. Most existing push-button switches operate on a dual-state cycle of "press once to close, press again to open," meaning the switch can only switch between the on and off states of the circuit, and cannot switch between different signal output levels while maintaining the circuit closed.

[0003] In certain applications, such as intelligent sensor control circuits and small household appliance control modules, it is necessary not only to control the on / off state of the circuit via a switch, but also to switch between high and low level signals when the circuit is closed, according to actual needs, to achieve different control functions. Existing push-button switches, due to structural design limitations, cannot meet this multi-state control requirement of "closed-level switching-open". To achieve this function, it is often necessary to add a complex level adjustment circuit, which not only increases the size and cost of the device, but may also reduce the stability and reliability of the circuit. Therefore, there is an urgent need for a push-button switch that can switch between high and low levels when closed to solve these problems. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] This invention provides a push-button switch with level linkage function, comprising: a housing, a pressing assembly, a contact module, and a locking / resetting module.

[0006] The housing has a cavity for accommodating the pressing component, the contact module and the locking and resetting module. The inner sidewall of the housing is provided with an annular first slot and a second slot, which are arranged sequentially along the axial direction of the housing.

[0007] The pressing assembly includes a pressing button, a connecting rod, and a protruding locking block. The pressing button is located at the top of the connecting rod and extends to the outside of the housing. The connecting rod is disposed in the cavity of the housing along the axial direction of the housing and can reciprocate along the axial direction of the housing. The protruding locking block is located on the outer wall of the connecting rod and is used to engage with the first or second locking slot to lock the position of the pressing assembly.

[0008] The contact module is located at the bottom of the housing cavity and includes a first contact group and a second contact group spaced apart along the axial direction of the housing. The first contact group and the second contact group open and close as the connecting rod moves, thereby controlling the on and off of the circuit.

[0009] The locking and reset module is connected to the pressing button and is used to lock the state of the pressing component when it moves to different positions, and to control the on / off state of the first contact group and the second contact group in conjunction with the movement of the pressing component.

[0010] When the pressing component is in the initial unpressed position, the locking and reset module locks the pressing component in the initial unpressed position, and both the first contact group and the second contact group are in the open state, and the switch as a whole is in the open state.

[0011] When the first pressing operation is applied to the pressing component, the pressing component moves to the first pressing position along the axis of the housing. The protruding block is engaged in the first slot of the housing. The locking and reset module locks the position of the pressing component. The first contact group is closed, the second contact group remains open, the switch is closed as a whole and outputs a high level.

[0012] When a second pressing operation is applied to the pressing component in the first pressing position, the pressing component resets from the first pressing position to the second position. The protruding locking block disengages from the first locking slot and locks into the second locking slot on the housing. The locking reset module locks the position of the pressing component, the first contact group is opened, the second contact group is closed, the switch as a whole remains closed and outputs a low level.

[0013] When a third press is applied to the pressing component in the second position, the pressing component resets to the initial unpressed position. The locking reset module then locks the pressing component back to the initial unpressed position, and both the first contact group and the second contact group return to the open state, thus disconnecting the entire switch.

[0014] Furthermore, the first contact group includes a first stationary contact and a first moving contact. The first stationary contact is fixed on the inner wall of the bottom of the housing and connected to an external high-level power supply. The first moving contact is fixed at the bottom end of the connecting rod. When the pressing component moves to the first pressing position, the first moving contact contacts the first stationary contact, causing the first contact group to close and the circuit to be connected to a high level.

[0015] The second contact group includes a second stationary contact and a second moving contact. The second stationary contact is fixed on the inner wall of the bottom of the housing, spaced apart from the first stationary contact, and connected to an external low-level power supply. The second moving contact is fixed on the side wall of the bottom end of the connecting rod, spaced apart from the first moving contact. When the pressing component moves to the second pressing position, the second moving contact contacts the second stationary contact, causing the second contact group to close and the circuit to be connected to a low level.

[0016] Furthermore, the first moving contact and the second moving contact are distributed vertically on the bottom of the pressing component, and there is a gap between them.

[0017] Furthermore, the high-level power supply has a voltage of 5-12V DC, and the low-level power supply has a voltage of 0-3V DC.

[0018] Furthermore, the locking reset module includes an elastic reset component, which is sleeved on the outside of the connecting rod. The top end of the elastic reset component abuts against the bottom of the pressing button, and the bottom end of the elastic reset component abuts against the bottom of the housing cavity.

[0019] Furthermore, the elastic reset component is a helical spring, and the spring constant satisfies the following: under the action of pressing operation, it can overcome the spring force to move the pressing component, and after the pressing operation is canceled, it can drive the pressing component to reset to the corresponding position.

[0020] Furthermore, the casing is made of insulating material.

[0021] This invention provides a push-button switch with level linkage function. The push-button switch includes a housing, a pressing component, a contact module, and a locking / reset module. By pressing the pressing component three times, the opening and closing states of the first and second contact groups in the contact module are changed, thus achieving a complete working cycle of "open-high-level closing-low-level closing-open". This invention can achieve high-low level switching while maintaining a closed circuit, meeting the multi-state control requirements in specific scenarios. It eliminates the need for additional level adjustment circuits, simplifying the device structure and reducing costs. Compared with existing technologies, this invention solves the technical problem that existing push-button switches cannot achieve high-low level switching while in a closed state. Attached Figure Description

[0022] The accompanying drawings, which form part of this specification, are provided to further illustrate embodiments of the invention and, together with the textual description, explain the principles of the invention. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0023] Figure 1 A schematic diagram of a push-button switch with level linkage function provided according to a specific embodiment of the present invention is shown.

[0024] The above figures include the following reference numerals:

[0025] 1. Housing; 11. First slot; 12. Second slot; 2. Pressing assembly; 21. Press button; 22. Connecting rod; 23. Protruding locking block; 3. Contact module; 31. First contact group; 311. First stationary contact; 312. First moving contact; 32. Second contact group; 321. Second stationary contact; 322. Second moving contact; 4. Locking reset module; 41. Elastic reset component. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0029] like Figure 1As shown, a push-button switch with level linkage function is provided according to a specific embodiment of the present invention. The push-button switch includes: a housing 1, a pressing component 2, a contact module 3, and a locking and reset module 4. The housing 1 has a cavity for accommodating the pressing component 2, the contact module 3, and the locking and reset module 4. An annular first slot 11 and a second slot 12 are provided on the inner side wall of the housing 1. The first slot 11 and the second slot 12 are arranged sequentially along the axial direction of the housing.

[0030] The pressing assembly 2 includes a pressing button 21, a connecting rod 22, and a protruding locking block 23. The pressing button 21 is located at the top of the connecting rod 22 and extends to the outside of the housing 1. The connecting rod 22 is located in the cavity of the housing 1 along the axial direction of the housing 1 and can reciprocate along the axial direction of the housing 1. The protruding locking block 23 is located on the outer wall of the connecting rod 22 and is used to engage with the first locking groove 11 or the second locking groove 12 to lock the position of the pressing assembly 2.

[0031] The contact module 3 is located at the bottom of the cavity of the housing 1, and includes a first contact group 31 and a second contact group 32 spaced apart along the axial direction of the housing 1. The first contact group 31 and the second contact group 32 open and close as the connecting rod 22 moves, thereby controlling the circuit's on and off.

[0032] The locking and reset module 4 is connected to the pressing button 21 and is used to lock the state of the pressing component 2 when it moves to different positions. It also controls the on / off state of the first contact group 31 and the second contact group 32 in conjunction with the movement of the pressing component 2.

[0033] When the pressing component 2 is in the initial unpressed position, the locking and reset module 4 locks the pressing component 2 in the initial unpressed position, and both the first contact group 31 and the second contact group 32 are in the open state, and the switch as a whole is in the open state.

[0034] When the first pressing operation is applied to the pressing component 2, the pressing component 2 moves to the first pressing position along the axis of the housing 1. The protruding locking block 2 is inserted into the first locking groove 11 of the housing 1. The locking and reset module 4 locks the position of the pressing component 2. The first contact group 31 is closed, the second contact group 32 remains open, the switch is closed as a whole and outputs a high level.

[0035] When a second pressing operation is applied to the pressing component 2 which is in the first pressing position, the pressing component 2 is reset from the first pressing position to the second position. The protruding locking block 23 disengages from the first locking groove 11 and locks into the second locking groove 12 on the housing 1. The locking reset module 4 locks the position of the pressing component 2. The first contact group 31 is opened and the second contact group 32 is closed. The switch as a whole remains closed and outputs a low level.

[0036] A third pressing operation is applied to the pressing component 2, which is in the second position. The pressing component 2 is reset to the initial unpressed position. The locking reset module 4 locks the pressing component 2 back to the initial unpressed position. The first contact group 31 and the second contact group 32 are both restored to the open state, and the switch is completely disconnected.

[0037] This configuration provides a push-button switch with level-linked functionality. The push-button switch includes a housing 1, a pressing component 2, a contact module 3, and a locking / resetting module 4. By pressing the pressing component 2 three times, the opening and closing states of the first contact group 31 and the second contact group 32 in the contact module 3 are changed, thus achieving a complete working cycle of "open-high level closed-low level closed-open". This invention can achieve high-low level switching while maintaining a closed circuit, meeting the multi-state control requirements in specific scenarios. It eliminates the need for additional level adjustment circuits, simplifying the device structure and reducing costs.

[0038] In this invention, a protruding locking block 23 disposed on the outer side wall of the pressing component and two locking slots disposed on the inner side wall of the housing 1 form a locking structure. The two locking slots correspond to the first pressing position and the first pressing position, respectively. The protruding locking block 23 can engage with the corresponding locking slot to lock the pressing component at different positions.

[0039] Preferably, the housing 1 is made of an insulating material, such as ABS plastic or polycarbonate, to prevent short circuits.

[0040] Furthermore, in this invention, in order to enable the first contact group 31 and the second contact group 32 to open and close as the connecting rod 22 moves, the first contact group 31 can be configured to include a first stationary contact 311 and a first moving contact 312. The first stationary contact 311 is fixed on the inner wall of the bottom of the housing 1 and connected to an external high-level power supply; the first moving contact 312 is fixed on the bottom end of the connecting rod 22; when the pressing component 2 moves to the first pressing position, the first moving contact 312 contacts the first stationary contact 311, causing the first contact group 31 to close and the circuit to be connected to a high level.

[0041] The second contact group 32 includes a second stationary contact 321 and a second moving contact 322. The second stationary contact 321 is fixed on the inner wall of the bottom of the housing 1, spaced apart from the first stationary contact 311, and connected to an external low-level power supply. The second moving contact 322 is fixed on the side wall of the bottom end of the connecting rod 22, spaced apart from the first moving contact 312. When the pressing component 2 moves to the second pressing position, the second moving contact 322 contacts the second stationary contact 321, causing the second contact group 32 to close and the circuit to be connected to a low level.

[0042] By setting the first stationary contact 311 and the second stationary contact 321, the push-button switch is connected to an external high and low level power supply; by setting the first moving contact 312 and the second moving contact 322 on the connecting rod 22, the circuit can be switched on and off as the push-button assembly 2 moves, thereby enabling the push-button assembly 2 to switch between high and low levels when it is closed.

[0043] Preferably, the voltage of the high-level power supply is 5-12V DC voltage, and the voltage of the low-level power supply is 0-3V DC voltage.

[0044] Furthermore, in this invention, to achieve state locking of the pressing component 2 by the locking reset module 4, the locking reset module 4 may be configured to include an elastic reset member 41. The elastic reset member 41 is sleeved on the outside of the connecting rod 22, with its top end abutting against the bottom of the pressing button 21 and its bottom end abutting against the bottom of the cavity of the housing 1. In this invention, the elastic reset member 41 is used to provide a reset driving force for the pressing component to reset from the first pressed position to the initial unpressed position.

[0045] When a pressing force is applied to the button 21, the elastic reset member 41 is compressed and the pressing assembly 2 moves downward; when the pressing force is removed, the elastic reset member 41 returns to its original shape, providing an upward reset driving force for the pressing assembly 2.

[0046] Preferably, the elastic reset element can be a helical spring, and the spring constant satisfies the following: under the action of pressing operation, it can overcome the spring force to move the pressing component 2, and after the pressing operation is cancelled, it can drive the pressing component 2 to reset to the corresponding position.

[0047] Using the above configuration, in the initial state, the pressing component 2 is in the initial unpressed position, the locking and reset module 4 locks the pressing component 2 in the current position, the first contact group 31 and the second contact group 32 are both in the open state, and the switch as a whole is in the open state.

[0048] When the first pressing operation is applied to the pressing component 2, the locking and reset module 4 releases the lock on the initial position of the pressing component 2. The pressing component 2 moves to the first pressing position along the axis of the housing 1. The protruding locking block 2 is inserted into the first locking groove 11 of the housing 1. The locking and reset module 4 locks the pressing component 2 in the first pressing position. At the same time, the first contact group 31 is closed, the second contact group 32 remains open, the switch is closed as a whole and outputs a high level.

[0049] A second pressing operation is applied to the pressing component 2, which is in the first pressing position. Under the action of the locking and reset module 4, the pressing component 2 is reset from the first pressing position to the second position. The protruding block 23 disengages from the first slot 11 and is locked into the second slot 12 on the housing 1. The locking and reset module 4 locks the pressing component 2 in the second position. The first contact group 31 is opened and the second contact group 32 is closed. The switch as a whole remains closed and outputs a low level.

[0050] A third pressing operation is applied to the pressing component 2, which is in the second position. The locking and reset module 4 releases the locking of the pressing component 2 in the second position, and the pressing component 2 is reset to the initial unpressed position. The locking and reset module 4 then relocks the pressing component 2 in the initial unpressed position. The first contact group 31 and the second contact group 32 are both restored to the open state, and the switch is completely disconnected.

[0051] The push-button switch of the present invention achieves a complete working cycle of "disconnect-high level closure-low level closure-disconnect" through three pressing operations. It can switch between high and low levels while keeping the circuit closed, meeting the multi-state control requirements in specific scenarios. It eliminates the need for additional level adjustment circuits, simplifies the device structure, and reduces costs.

[0052] The locking and reset module adopts a design that combines an elastic reset component with a locking structure, which can accurately control the locking and reset of the pressing component in different positions, ensuring the stability and reliability of the switch's working state, making it easy to operate and with a long service life.

[0053] The two sets of contacts in the contact module are designed with an upper and lower distribution and a preset distance between them, which effectively avoids circuit failure caused by the simultaneous closure of the two sets of contacts and improves the safety of the switch.

[0054] To gain a further understanding of the present invention, the push-button switch with level linkage function of the present invention will be described in detail below with reference to specific embodiments.

[0055] like Figure 1 As shown, a push-button switch with level linkage function is provided according to a specific embodiment of the present invention, including: a housing 1, a push-button assembly 2, a contact module 3, and a locking and reset module 4.

[0056] The switch housing 1 is made of ABS plastic and has a cylindrical structure. Internally, it has a cavity to accommodate the pressing assembly 2, the contact module 3, and the locking / resetting module 4. Two annular slots are provided on the inner wall of the housing 1: a first slot 11 and a second slot 12. The first slot 11 is located near the top of the housing 1, corresponding to the first pressing position of the pressing assembly 2. The second slot 12 is located in the middle of the housing 1, corresponding to the second position of the pressing assembly 2. The second position is the position after the pressing assembly has reset and protruded from the first pressing position.

[0057] The pressing assembly 2 includes a pressing button 21 and a connecting rod 22. The pressing button 21 is circular and is located at the top of the connecting rod 22, extending outward from the outside of the switch housing 1 for easy pressing by the user. The connecting rod 22 is cylindrical and is located in the internal cavity of the housing 1 along the axial direction, allowing it to reciprocate along the axial direction. A protruding locking block 23 is provided on the outer wall of the connecting rod 22. The protruding locking block 23 can engage with the first locking groove 11 or the second locking groove 12 on the housing 1 to lock the position of the pressing assembly 2.

[0058] The contact module 3 is located at the bottom of the switch housing 1 and includes a first contact group 31 and a second contact group 32. The first contact group 31 consists of a first stationary contact 311 and a first moving contact 312. The first stationary contact 311 is fixed on the inner wall of the bottom of the housing 1 and is connected to an external 5V DC high-level power supply through a wire. The first moving contact 312 is fixed at the bottom end of the connecting rod 22 and has a metal conductive sheet structure. When the pressing assembly 2 moves to the first pressing position, the first moving contact 312 contacts the first stationary contact 311, causing the first contact group 31 to close. The second contact group 32 consists of a second stationary contact 321 and a second moving contact 322. The second stationary contact 321 is also fixed on the inner wall of the bottom of the housing 1, spaced apart from the first stationary contact 311, and connected to an external 1.8V DC low-level power supply via a wire. The second moving contact 322 is fixed on the side wall of the bottom end of the connecting rod 22, located above the first moving contact 312, with a distance of 5mm between them. When the pressing component 2 moves to the second position, the second moving contact 322 contacts the second stationary contact 321, causing the second contact group 32 to close. Since the first moving contact 312 and the second moving contact 322 are distributed vertically and have a gap, the simultaneous closure of the first contact group 31 and the second contact group 32 can be effectively prevented.

[0059] The locking and reset module 4 includes a helical spring 41, which is sleeved on the outside of the connecting rod 22. The top end of the spring 41 abuts against the bottom of the push button 21, and the bottom end of the spring 41 abuts against the annular step inside the switch housing 1. The spring constant of the helical spring 41 is 5 N / m. When a pressing force is applied to the push button 21, the spring 41 is compressed, and the pressing assembly 2 moves downward. When the pressing force is removed, the spring 41 returns to its original deformation, providing an upward reset driving force for the pressing assembly 2.

[0060] In this embodiment, the switch operates as follows:

[0061] Initial state: The pressing component 2 is in the initial unpressed position. At this time, the helical spring 41 is in the naturally extended state, the protruding block 23 on the connecting rod 22 is not engaged with any slot, the first contact group 31 and the second contact group 32 of the contact module 3 are both in the open state, and the switch as a whole is in the open state.

[0062] First press operation: The user presses down the press button 21, and the pressing component 2 moves downward along the axis of the housing 1, compressing the helical spring 41. When the pressing component 2 moves to the first pressing position, the protruding locking block 23 on the connecting rod 22 engages with the first locking groove 11 on the housing 1, and the locking and reset module 4 locks the pressing component 2 in this position. At this time, the first moving contact 312 at the bottom of the connecting rod 22 contacts the first stationary contact 311 at the bottom of the housing 1, the first contact group 31 closes, the second contact group 32 remains open, the switch is closed as a whole, the circuit is connected to a 5V high-level power supply, and a high-level signal is output.

[0063] Second press operation: The user continues to press the button 21 downwards. The applied pressing force overcomes the engaging force between the protruding latch 23 and the first slot 11, causing the protruding latch 23 to disengage from the first slot 11. If the pressing force is then released, the coil spring 41 returns to its original deformation, pushing the pressing assembly 2 upwards. When the user continues to press the button 21 downwards and moves it to the second position, the protruding latch 23 engages in the second slot 12 on the housing 1, and the pressing assembly 2 is locked in this position. At this time, the first moving contact 312 separates from the first stationary contact 311, the first contact group 31 is disconnected, and the second moving contact 322 on the side wall of the connecting rod 22 contacts the second stationary contact 321, the second contact group 32 is closed, the switch remains closed, the circuit is connected to a 1.8V low-level power supply, and a low-level signal is output.

[0064] The third press operation: The user presses the press button 21 down again, the protruding block 23 disengages from the second slot 12, and after the press force is released, the coil spring 41 continues to push the press component 2 upward until the press component 2 returns to the initial unpressed position. At this time, the first contact group 31 and the second contact group 32 are both restored to the open state, the switch is completely disconnected, and a complete working cycle is completed.

[0065] In summary, this invention provides a push-button switch with level-linked functionality. The push-button switch includes a housing, a pressing component, a contact module, and a locking / reset module. By pressing the pressing component three times, the opening and closing states of the first and second contact groups in the contact module are changed, thus achieving a complete working cycle of "open-high-level closing-low-level closing-open". This invention can switch between high and low levels while maintaining a closed circuit, meeting the multi-state control requirements in specific scenarios. It eliminates the need for additional level adjustment circuits, simplifying the device structure and reducing costs.

[0066] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0067] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0068] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A push-button switch with level linkage function, characterized in that, The push-button switch with level linkage function includes: a housing (1), a push-button assembly (2), a contact module (3), and a locking and reset module (4). The housing (1) has a cavity for accommodating the pressing assembly (2), the contact module (3) and the locking reset module (4). The inner sidewall of the housing (1) is provided with an annular first slot (11) and a second slot (12), and the first slot (11) and the second slot (12) are arranged sequentially along the axial direction of the housing. The pressing assembly (2) includes a pressing button (21), a connecting rod (22), and a protruding locking block (23). The pressing button (21) is located at the top of the connecting rod (22) and extends to the outside of the housing (1). The connecting rod (22) is located in the cavity of the housing (1) along the axial direction of the housing (1) and can reciprocate along the axial direction of the housing (1). The protruding locking block (23) is located on the outer wall of the connecting rod (22). The protruding locking block (2) is used to engage with the first slot (11) or the second slot (12) to lock the position of the pressing assembly (2). The contact module (3) is located at the bottom of the cavity of the housing (1) and includes a first contact group (31) and a second contact group (32) spaced apart along the axial direction of the housing (1). The first contact group (31) and the second contact group (32) open and close as the connecting rod (22) moves, thereby controlling the circuit. The locking reset module (4) is connected to the pressing button (21) and is used to lock the state of the pressing component (2) when the pressing component (2) moves to different positions, and to control the on / off state of the first contact group (31) and the second contact group (32) in conjunction with the movement of the pressing component (2). When the pressing component (2) is in the initial unpressed position, the locking reset module (4) locks the pressing component (2) in the initial unpressed position, and the first contact group (31) and the second contact group (32) are both in the open state, and the switch as a whole is in the open state. When the first pressing operation is applied to the pressing component (2), the pressing component (2) moves to the first pressing position along the axial direction of the housing (1). The protruding locking block (2) is engaged in the first locking groove (11) of the housing (1). The locking and reset module (4) locks the position of the pressing component (2). The first contact group (31) is closed, the second contact group (32) remains open, the switch is closed as a whole and outputs a high level. When a second pressing operation is applied to the pressing component (2) which is in the first pressing position, the pressing component (2) is reset from the first pressing position to the second position. The protruding locking block (23) disengages from the first locking groove (11) and locks into the second locking groove (12) on the housing (1). The locking reset module (4) locks the position of the pressing component (2). The first contact group (31) is disconnected, the second contact group (32) is closed, and the switch remains closed and outputs a low level. When a third pressing operation is applied to the pressing component (2) which is in the second position, the pressing component (2) is reset to the initial unpressed position. The locking reset module (4) locks the pressing component (2) back to the initial unpressed position. The first contact group (31) and the second contact group (32) are both restored to the open state, and the switch is completely disconnected.

2. The push-button switch with level linkage function according to claim 1, characterized in that, The first contact group (31) includes a first stationary contact (311) and a first moving contact (312). The first stationary contact (311) is fixed on the inner wall of the bottom of the housing (1) and connected to an external high-level power supply. The first moving contact (312) is fixed at the bottom end of the connecting rod (22). When the pressing assembly (2) moves to the first pressing position, the first moving contact (312) contacts the first stationary contact (311), causing the first contact group (31) to close and the circuit to be connected to a high level. The second contact group (32) includes a second stationary contact (321) and a second moving contact (322). The second stationary contact (321) is fixed on the inner wall of the bottom of the housing (1), spaced apart from the first stationary contact (311), and connected to an external low-level power supply. The second moving contact (322) is fixed on the side wall of the bottom end of the connecting rod (22), spaced apart from the first moving contact (312). When the pressing assembly (2) moves to the second pressing position, the second moving contact (322) contacts the second stationary contact (321), causing the second contact group (32) to close and the circuit to be connected to a low level.

3. The push-button switch with level linkage function according to claim 2, characterized in that, The first moving contact (312) and the second moving contact (322) are distributed vertically at the bottom of the pressing component (2), and there is a gap between them.

4. The push-button switch with level linkage function according to claim 2, characterized in that, The high-level power supply has a voltage of 5-12V DC, and the low-level power supply has a voltage of 0-3V DC.

5. The push-button switch with level linkage function according to claim 1, characterized in that, The locking reset module (4) includes an elastic reset member (41), which is sleeved on the outside of the connecting rod (22). The top end of the elastic reset member (41) abuts against the bottom of the pressing button (21), and the bottom end of the elastic reset member (41) abuts against the bottom of the cavity of the housing (1).

6. The push-button switch with level linkage function according to claim 5, characterized in that, The elastic reset component (41) is a helical spring, and the spring constant satisfies the following: under the action of pressing operation, it can overcome the spring force to move the pressing component (2), and after the pressing operation is cancelled, it can drive the pressing component (2) to reset to the corresponding position.

7. The push-button switch with level linkage function according to claim 1, characterized in that, The housing (1) is made of insulating material.

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