push-pull switch

Abstract

The application relates to the technical field of electrical switches, in particular to a push-pull switch, which comprises a switch housing, a terminal component arranged in the switch housing, the terminal component comprising at least one group of electrical terminals; an execution rod configured for push-pull movement between a first position and a second position through an aperture in the switch housing; an actuator operably connected with the execution rod, the actuator being configured to be slidably moved in the switch housing in a direction parallel or intersecting with the movement direction of the execution rod in response to the push-pull movement of the execution rod; the actuator comprising at least one plunger, the plunger being slidably moved in the switch housing in response to the slidable movement of the actuator in the switch housing; a bridging component operably connected with the plunger, the bridging component being configured to be swept between open and closed positions relative to the at least one group of electrical terminals in response to the slidable movement of the plunger in the switch housing.

Description

Technical Field

[0001] This application relates to the field of electrical switch technology, specifically to a push-pull switch. Background Technology

[0002] A push-button switch is a switch that uses a button to push a transmission mechanism to control the connection or disconnection of the moving contact and the stationary contact, thereby switching the circuit. Push-button switches are widely used in electrical automatic control circuits.

[0003] Push-pull push-button switches can be used in low-voltage control circuits. Generally, during operation, pushing the button forward initiates the operation, and pulling it out ends it. However, the pulling-out speed is slower than the pushing-out speed in human reaction time. Chinese utility model patent CN2765306Y discloses a push-pull push-button switch, including a push-pull button and switch contacts. The end cap at the top of the push-pull button directly contacts the switch contact assembly. Pulling the button out initiates the operation, and pushing the button forward ends the operation. This not only solves the problem of slow human reaction time but also eliminates the unreliability of push-button switches in emergency situations. However, existing push-pull push-button switches lack instantaneous operation and are prone to generating sparks when switched on. Summary of the Invention

[0004] This application aims to alleviate at least one of the aforementioned problems.

[0005] This application may relate to several broad forms. Embodiments of this application may include one or any combination of the various broad forms described herein.

[0006] In its first broad form, this application provides a push-pull switch, comprising:

[0007] A switch housing, wherein terminal components are arranged in the switch housing, and the terminal components include at least one set of electrical terminals;

[0008] An actuator is configured for push-pull movement between a first position and a second position through an orifice in the switch housing. In the first position, the actuator is pulled out of the switch housing relative to the interior through the orifice, and in the second position, the actuator is pushed out of the switch housing relative to the interior through the orifice.

[0009] An actuator, operably connected to an actuator rod, is configured to slidably move within a switch housing in a direction parallel or intersecting the direction of movement of the actuator rod in response to a push-pull motion of the actuator; the actuator includes at least one plunger, which slidably moves within the switch housing in response to the slidable movement of the actuator within the switch housing.

[0010] A bridging component, operably connected to a plunger, is configured to slidably move the plunger within a switch housing to sweep the bridging component relative to at least one set of electrical terminals between normally open and normally closed positions.

[0011] Preferably, the actuator includes a first rack arranged along the direction of movement of the actuator, and the actuator includes a second rack arranged in a direction parallel or intersecting the direction of movement of the actuator. A gear member is disposed in the switch housing and meshes with the first rack and the second rack respectively. In response to the push-pull movement of the actuator, the first rack moves slidably along the direction of movement of the actuator, thereby driving the gear member to rotate. The gear member further drives the second rack to move slidably along the direction of movement of the actuator in a direction parallel or intersecting the direction of movement of the actuator, so that the actuator can move slidably within the switch housing in a direction parallel or intersecting the direction of movement of the actuator.

[0012] Typically, the gear assembly includes a first gear and a second gear fixed coaxially. The first gear meshes with a first rack, and the second gear meshes with a second rack. In response to a push-pull motion of the actuator, the first rack slides along the direction of motion of the actuator, thereby driving the first gear to rotate. The second gear rotates synchronously with the first gear, further driving the second rack to slide in a direction parallel or intersecting the direction of motion of the actuator, so that the actuator can slide within the switch housing in a direction parallel or intersecting the direction of motion of the actuator.

[0013] Preferably, the actuator is configured to be slidably movable within the switch housing in a direction substantially perpendicular to the direction of movement of the actuator rod.

[0014] Preferably, the push-pull switch further includes a first sealing element configured to be arranged around the actuating rod to prevent particles, dust and water from entering the switch housing through the orifice.

[0015] Preferably, the switch housing includes a first housing component and a second housing component detachably mounted on the bottom of the first housing component. The push-pull switch also includes a closed cavity disposed within the first housing component. A first rack and a first gear are located outside the closed cavity, while an actuator and a second gear are located inside the closed cavity. The first gear and the second gear are coaxially fixed together by a drive shaft. The drive shaft passes through the side wall of the closed cavity and is provided with a second sealing element. The second sealing element is configured to prevent particles, dust, and water from entering the closed cavity through the connection between the drive shaft and the closed cavity.

[0016] Preferably, a return spring is disposed between the switch housing and the actuator rod, and the return spring is configured to return the actuator rod to the starting position after it is pushed inward.

[0017] Preferably, a contact spring is provided between the actuator and the plunger, the contact spring being configured to maintain pressure on the bridging component throughout the plunger's oscillation.

[0018] Preferably, each set of electrical terminals includes a normally closed terminal and a normally open terminal. In response to the plunger's slidable movement within the switch housing, the bridging component is configured to contact the normally closed terminal at one end and to contact or disconnect the normally open terminal at the other end.

[0019] Typically, a push-pull switch also includes a connector, which includes at least one set of terminals, each set of terminals corresponding to a set of electrical terminals, and each terminal is connected to the corresponding electrical terminal via a cable.

[0020] In a second, broader form, this application provides a push-pull switch, comprising:

[0021] A switch housing, wherein terminal components are arranged in the switch housing, and the terminal components include at least one set of signal terminals;

[0022] An actuator is configured for push-pull movement between a first position and a second position through an orifice in the switch housing. In the first position, the actuator is pulled out of the switch housing relative to the interior through the orifice, and in the second position, the actuator is pushed out of the switch housing relative to the interior through the orifice.

[0023] An actuator, operably connected to an actuator rod, is configured to slidably move within a switch housing in a direction parallel or intersecting the direction of movement of the actuator rod in response to a push-pull motion of the actuator rod.

[0024] The signaling module includes a signaling circuit for sensing the movement of an actuator and outputting a signaling module signal indicating the sensed movement or position of the actuator through at least one set of signal terminals.

[0025] Preferably, the actuator includes a first rack arranged along the direction of movement of the actuator, and the actuator includes a second rack arranged in a direction parallel or intersecting the direction of movement of the actuator. A gear member is disposed in the switch housing and meshes with the first rack and the second rack respectively. In response to the push-pull movement of the actuator, the first rack moves slidably along the direction of movement of the actuator, thereby driving the gear member to rotate. The gear member further drives the second rack to move slidably along the direction of movement of the actuator in a direction parallel or intersecting the direction of movement of the actuator, so that the actuator can move slidably within the switch housing in a direction parallel or intersecting the direction of movement of the actuator.

[0026] Typically, the gear assembly includes a first gear and a second gear fixed coaxially. The first gear meshes with a first rack, and the second gear meshes with a second rack. In response to a push-pull motion of the actuator, the first rack slides along the direction of motion of the actuator, thereby driving the first gear to rotate. The second gear rotates synchronously with the first gear, further driving the second rack to slide in a direction parallel or intersecting the direction of motion of the actuator, so that the actuator can slide within the switch housing in a direction parallel or intersecting the direction of motion of the actuator.

[0027] Preferably, the actuator is configured to be slidably movable within the switch housing in a direction substantially perpendicular to the direction of movement of the actuator rod.

[0028] Preferably, the signaling circuitry is at least partially formed on the circuit board and includes a variable resistor element disposed on the circuit board, the variable resistor element having a variable resistor element contact surface; the actuator includes a moving member configured to move relative to the variable resistor element contact surface in response to movement of the actuator, enabling the moving member to make contact with the variable resistor element contact surface in a plurality of contact point configurations, whereby the effective resistance of the variable resistor element is configured to vary in response to causing the moving member to make contact with the variable resistor element contact surface in each of the plurality of contact point configurations.

[0029] Preferably, the push-pull switch further includes a first sealing element configured to be arranged around the actuating rod to prevent particles, dust and water from entering the switch housing through the orifice.

[0030] Preferably, the switch housing includes a first housing component and a second housing component detachably mounted on the bottom of the first housing component. The push-pull switch also includes a closed cavity disposed within the first housing component. A first rack and a first gear are located outside the closed cavity, while an actuator and a second gear are located inside the closed cavity. The first gear and the second gear are coaxially fixed together by a drive shaft. The drive shaft passes through the side wall of the closed cavity and is provided with a second sealing element. The second sealing element is configured to prevent particles, dust, and water from entering the closed cavity through the connection between the drive shaft and the closed cavity.

[0031] Preferably, a return spring is disposed between the switch housing and the actuator rod, and the return spring is configured to return the actuator rod to the starting position after it is pushed inward.

[0032] Preferably, a contact spring is provided between the actuator and the plunger, the contact spring being configured to maintain pressure on the bridging component throughout the plunger's oscillation.

[0033] Preferably, each group of signal terminals includes a common terminal, a first signal terminal, and a second signal terminal. In response to the actuator sliding within the switch housing, the common terminal is sequentially connected to or disconnected from the first signal terminal and the second signal terminal. Attached Figure Description

[0034] This application will be more fully understood from the following detailed description of preferred but non-limiting embodiments described in conjunction with the accompanying drawings, in which:

[0035] Figure 1A-1E The front view, side view, top view, bottom view and exploded perspective view of the push-pull switch of the first embodiment of this application are shown respectively, wherein the push-pull switch includes a switch housing, an actuator, a bridging component and a terminal component;

[0036] Figure 2A-2B The following are perspective views of the push-pull switch of the first embodiment of this application when it is pulled out from different angles: Figure 2A The first shell component was concealed; Figure 2B The first shell component and the enclosed cavity were concealed;

[0037] Figures 3A-3B The following are longitudinal cross-sectional views of the push-pull switch of the first embodiment of this application when it is pushed forward and pulled out, respectively. Figure 3A When the actuator is in the first position, the actuator is pulled outward from the switch housing through the orifice. Figure 3B When the actuator is in the second position, the actuator is pushed inward from the switch housing through the orifice. Figure 3A and Figure 3B The first shell component was concealed in all of them;

[0038] Figure 3C-3D The following are vertical cross-sectional views of the push-pull switch of the first embodiment of this application when it is pushed in and pulled out, respectively. Figure 3C When the actuator is in the first position, the actuator is pulled outward from the switch housing through the orifice. Figure 3D When the actuator is in the second position, the actuator is pushed inward from the switch housing through the orifice.

[0039] Figures 4A-4B Perspective views of the gear component, actuator, bridging component, and terminal component in the first embodiment of this application are shown when the actuator rod is in different positions. Figure 4A When the actuator is in the first position, the gear component drives the actuator to move to the right end, and the electrical terminals on the front side of the two sets of electrical terminals are disconnected, while the electrical terminals on the rear side are in contact. Figure 4B When the actuator lever is in the second position, the gear component drives the actuator to move to the left end, and the rear electrical terminal of the two sets of electrical terminals disconnects, while the front electrical terminal makes contact.

[0040] Figure 4C-4D Perspective views of the terminal component in the first embodiment of this application are shown when the actuator is in different positions, wherein Figure 4A When the actuator is in the first position, the front electrical terminal of the two sets of electrical terminals is disconnected, and the rear electrical terminal is in contact. Figure 4B When the actuator is in the second position, the rear electrical terminal of the two sets of electrical terminals is disconnected, and the front electrical terminal is in contact.

[0041] Figures 5A-5C The front view, side view and bottom view of the push-pull switch of the alternative embodiment of this application are shown respectively. The push-pull switch also includes a connector, and the wiring terminals of the connector are connected to the corresponding electrical terminals through cables.

[0042] Figure 6 The control circuit diagram of the push-pull switch in the alternative embodiment of this application is shown;

[0043] Figures 7A-7B The bottom view and exploded perspective view of the push-pull switch of the second embodiment of this application are shown respectively. The front view, side view and top view of the push-pull switch of this embodiment are the same as those of the first embodiment. The push-pull switch includes a switch housing, an actuator, a bridging component, a circuit board, a moving component and a terminal component.

[0044] Figures 8A-8B Perspective views of the gear component, actuator, circuit board, moving component, bridging component, and terminal component in the second embodiment of this application are shown when the actuator rod is in different positions. Figure 8A When the actuator is in the first position, the gear component drives the actuator to move to the right end, the electrical terminals are disconnected, and the moving component only contacts the uppermost variable resistor element; Figure 8B When the actuator lever is in the second position, the gear component drives the actuator to move to the left end, the electrical terminals make contact, and the moving component makes contact with the three variable resistor elements respectively;

[0045] Figure 8C-8D Perspective views of the circuit board, moving member, and terminal member in the second embodiment of this application are shown when the actuator is in different positions, wherein... Figure 8A When the actuator is in the first position, the electrical terminals are disconnected, and the moving component only contacts the uppermost variable resistor element; Figure 8B When the actuator is in the second position, the electrical terminals are in contact, and the moving component is in contact with the three variable resistor elements respectively;

[0046] Figure 9 The control circuit diagram of the push-pull switch according to the second embodiment of this application is shown. Detailed Implementation

[0047] To facilitate understanding by those skilled in the art, the present application will be further described below with reference to the embodiments and figures 1-9. The content mentioned in the embodiments is not intended to limit the present application.

[0048] Preferred embodiments of this application will be described herein with reference to Figures 1 to 12. Figure 9 The following description is provided. Embodiments include push-pull switches for use with power tools, electric gardening tools, or household appliances, such as power tools like drills, grinders, sanders, saws, and rotary tools; electric gardening tools like electric lawnmowers, electric saws, electric hair dryers, and electric lawn trimmers; and household appliances like drills, angle grinders, and hammer drills. It should be understood that while this embodiment is described as being used with power tools, electric gardening tools, and household appliances, this is merely for illustrative purposes, and alternative embodiments of this application can certainly be used with other types of electrical equipment.

[0049] like Figure 1A-1E , Figure 2A-2B , Figures 3A-3B and Figures 4A-4D The illustration shows a first embodiment of the push-pull switch of this application, including a switch housing 100. The switch housing 100 includes a first housing member 100A and a second housing member 100B detachably mounted to the bottom of the first housing member 100A. The first housing member 100A and the second housing member 100B can be connected together by snap-fit ​​or thread to substantially enclose at least some of the components of the push-pull switch. Figure 1E and Figure 3C-3D As shown, optionally, the push-pull switch also includes a first sealing element 110, which is arranged around the actuating rod 130 to prevent particles, dust, and water from entering the switch housing 100 through the orifice. Specifically, the first sealing element 110 is an O-ring that fits onto the actuating rod 130, and the outer edge of the O-ring has a first annular groove 110A circumferentially formed, which engages with the orifice in the switch housing 100. Figure 1E and Figures 3A-3BAs shown, to further improve the waterproof performance of the push-pull switch, the push-pull switch also includes a closed cavity 120 disposed within the first housing member. The closed cavity 120 is configured to prevent particles, dust, and water from entering the closed cavity 120 through the opening. Optionally, the bottom of the first housing member 100A has a generally square receiving groove 100C, and the closed cavity 120 is embedded in the upper middle part of the receiving groove 100C. The top of the second housing member 100B has a protrusion 100D that mates with the receiving groove 100C, and the protrusion 100D is embedded in the lower part of the receiving groove 100C. In this embodiment, the first housing member 100A and the second housing member 100B are connected together by multiple snap-fit ​​connections. Similarly, the closed cavity 120 and the protrusion 100D on the top of the second housing member 100B are connected together by multiple snap-fit ​​connections. Specifically, the bottom outer edge of the first housing component 100A is provided with a plurality of first insert blocks 100E protruding downwards. The top of the second housing component 100B is provided with a first slot 100F corresponding to the position of each first insert block 100E. A first locking block 100G is fixed in the middle of each first slot 100F. Each first insert block 100E is provided with a first locking hole 100H that cooperates with the first locking block 100G. When the plurality of first insert blocks 100E are inserted into the corresponding first slot 100F, each first locking block 100G is locked into the corresponding first locking hole 100H. Similarly, a plurality of second insert blocks 120A are provided on the bottom outer edge of the closed cavity 120. A second slot 100I is provided on the top of the protrusion 100D corresponding to the position of each second insert block 120A. A second locking block 100J is fixed in the middle of each second slot 100I. A second locking hole 120B is provided on each second insert block 120A to cooperate with the second locking block 100J. When a plurality of second insert blocks 120A are inserted into the corresponding second slot 100I, each second locking block 100J is locked into the corresponding second locking hole 120B. Optionally, both the first locking block 100G and the second locking block 100J have a gradually sloping surface that slopes from top to bottom and from the inside out. Simultaneously, the first insert block 100E and the second insert block 120A have a certain degree of elasticity, facilitating the insertion of the first locking block 100G and the second locking block 100J into the first locking hole 100H of the first insert block 100E and the second locking hole 120B of the second insert block 120A, respectively. It is understood that in other embodiments, the positions of the first locking block 100G and the first locking hole 100H can be interchanged, and the positions of the second locking block 100J and the second locking hole 120B can be interchanged.

[0050] Actuating lever 130 is configured for push-pull movement between a first position and a second position through an orifice in the switch housing 100, such as... Figure 2A-2B and Figures 3A-3BAs shown, in the first position, the actuator 130 is pulled out from the switch housing 100 towards the interior through the orifice; in the second position, the actuator 130 is pushed in from the switch housing 100 towards the interior through the orifice. Figures 3A-3B As shown, the top of the actuator 130 passes upward through the first sealing element 110, allowing the actuator 130 to move in a push-pull motion between the first position and the second position through an opening in the switch housing 100. Figure 2A-2B As shown, specifically, a sliding seat 130A is fixed to the bottom of the actuator 130. Guide grooves 130B are vertically formed on both sides of the sliding seat 130A. Guide blocks 120C, which cooperate with the guide grooves 130B, protrude upwards from the top of the enclosed cavity 120 on both sides. The two guide blocks 120C are slidably connected within the guide grooves 130B on both sides of the sliding seat 130A, used to limit the pushing and pulling movement of the actuator 130, ensuring smooth movement. Furthermore, a stop block 120D is fixed to the top of each of the two guide blocks 120C. Correspondingly, a stop groove 130C is formed on the top of each of the two guide grooves 130B. When the actuator 130 is pulled to its highest point, the two stop blocks 120D are respectively embedded in the corresponding stop grooves 130C, used to limit the pushing and pulling stroke of the actuator 130. Figures 3A-3B As shown, in this embodiment, a return spring 130D is disposed between the switch housing 100 and the actuator 130. The return spring 130D is configured to return the actuator 130 to its initial position after being pulled outward. The placement of the return spring 130D provides an instantaneous function for the push-pull switch of this application. Specifically, a sleeve 120E protrudes upward from the center of the top of the enclosed cavity 120. A sliding groove 130E that mates with the sleeve 120E is formed inside the actuator 130 and in the middle of the sliding seat 130A. The sleeve 120E is slidably connected within the sliding groove 130E. The bottom of the return spring 130D is placed inside the sleeve 120E, and the top of the return spring 130D abuts against the top surface of the sliding groove 130E.

[0051] Actuator 140, operably connected to actuator 130, is configured to slidably move within switch housing 100 in a direction parallel or intersecting the direction of movement of actuator 130 in response to a push-pull movement of actuator 130. In this embodiment, actuator 140 is configured to slidably move within switch housing 100 in a direction substantially perpendicular to actuator 130. It is understood that in other embodiments, actuator 140 may also be configured to slidably move within switch housing 100 in a direction parallel to or at other angles to actuator 130. The direction of movement of actuator 130 is very flexible; it can move vertically, horizontally, or even at different angles, and can engage gear designs at different angles as needed. In this embodiment, as... Figure 2A-2BAs shown, the actuator 130 includes a first rack 130F arranged along the direction of movement of the actuator 130, and the actuator 140 includes a second rack 140A arranged in a direction substantially perpendicular to the direction of movement of the actuator 130. A gear member 150 is disposed in the switch housing 100, which meshes with the first rack 130F and the second rack 140A respectively. In response to the push-pull movement of the actuator 130, the first rack 130F moves slidably along the direction of movement of the actuator 130, thereby driving the gear member 150 to rotate. The gear member 150 further drives the second rack 140A to move slidably in a direction substantially perpendicular to the direction of movement of the actuator 130, so that the actuator 140 can move slidably within the switch housing 100 in a direction substantially perpendicular to the direction of movement of the actuator 130. Alternatively, the gear assembly 150 includes a first gear 150A and a second gear 150B coaxially fixed. The first gear 150A meshes with a first rack 130F, and the second gear 150B meshes with a second rack 140A. In response to the push-pull movement of the actuator 130, the first rack 130F slides along the movement direction of the actuator 130, thereby driving the first gear 150A to rotate. The second gear 150B rotates synchronously with the first gear 150A, further driving the second rack 140A to slide in a direction substantially perpendicular to the movement direction of the actuator 130, so that the actuator 140 can slide within the switch housing 100 in a direction substantially perpendicular to the movement direction of the actuator 130. Specifically, the first rack 130F is vertically fixed to one side of the bottom of the sliding seat 130A, and the second rack 140A is horizontally fixed to the top of the actuator 140. In this embodiment, the first rack 130F and the first gear 150A are located outside the closed cavity, and the actuator 140 and the second gear 150B are located inside the closed cavity 120. The closed cavity 120 has a vertically formed receiving groove 120F corresponding to the position of the first rack 130F, and the first rack 103E can move up and down within the receiving groove 120F. The top of the second housing component 100B has a bracket 100K protruding upwards corresponding to the position of the receiving groove 120F. The top of the bracket 100K has an arc-shaped support groove 100L, and the closed cavity 120 has a first through hole 120G corresponding to the position of the support groove 100L. The first gear 150A and the second gear 150B are coaxially fixed together by a transmission shaft 150C. The middle part of the transmission shaft 150C is rotatably connected to the first through hole 120G of the closed cavity 120. One end of the transmission shaft 150C protrudes out of the outside of the first gear 150A and is mounted in the support groove 100L on the top of the bracket 100K.Alternatively, a receiving cavity 120H is provided within the enclosed cavity 120 at the position corresponding to the second gear 150B. A second through hole 120I is provided on one side of the receiving cavity 120H corresponding to the first gear 150A. The middle part of the drive shaft 150C is rotatably connected to the second through hole 120I to facilitate the synchronous rotation of the first gear 150A and the second gear 150B. To facilitate the stable movement of the actuator 140, the actuator 140 is provided with at least one sliding groove 140B along its moving direction. A limiting strip 120J is protruding within the enclosed cavity 120 at the position corresponding to each sliding groove 140B. Each limiting strip 120J is embedded in the corresponding sliding groove 140B. The actuator 140 moves along the limiting strip 120J through the sliding groove 140B at its top. In this embodiment, there are two slide grooves 140B, which are parallel and spaced apart on both sides of the top of the actuator 140 corresponding to the second rack 140A. Correspondingly, there are two limiting strips 120J, which protrude from the bottom sides of the receiving cavity 120H to make the movement of the actuator 140 smoother. It is understood that in other embodiments, the gear component 150 can also be replaced by a bevel gear structure. Of course, the transmission structure of the first rack 130F, the gear component 150 and the second rack 140A can also be replaced by other transmission structures.

[0052] In traditional switch push rods, there is a process of air compression and release within the sealed cavity of the switch during operation. When the push rod is pressed, the air inside the sealed cavity is compressed, and gas overflows from the cavity. When the push rod is released, a negative pressure is created inside the sealed cavity, which can draw in external moisture, leading to waterproofing failure. Furthermore, the traditional push rod and sealing ring move axially in a pulling motion, which can easily cause the sealing ring to loosen and fail due to friction. Also, during the movement of the traditional switch push rod, it directly rubs against the sealing housing, which can easily lead to failure of the internal structural fit. To solve the above technical problems, this application provides a second sealing element 150D at the connection between the drive shaft 150C and the closed cavity 120. The second sealing element 150D is configured to prevent particles, dust, and water from entering the closed cavity 120 through the connection between the drive shaft 150C and the closed cavity 120. Specifically, the second sealing element 150D is an O-ring that fits onto the drive shaft 150C. A second annular groove 150E is circumferentially formed along the outer edge of the O-ring, and the second annular groove 150E engages with the first through hole 120G in the closed cavity 120. Driven by the drive shaft 150C, negative pressure is prevented from forming inside the sealed cavity, thus avoiding the intake of external moisture. Furthermore, the rotation of the drive shaft 150C via the first gear 150A significantly reduces friction caused by the axial pulling of the existing sealing ring, and effectively reduces the failure of internal components due to friction during the axial movement of the existing push rod, thus extending its service life. As can be seen, this application provides inlet protection for the opening of the switch housing 100 through the first sealing element 110, and separates the top actuator 130 from the sealed contact portion inside the sealed cavity 120 through the closed cavity 120. A second sealing element 150D is arranged at the connection between the drive shaft 150C and the closed cavity 120, so that the sealed contact portion inside the closed cavity 120 can be waterproof and dustproof, thereby enabling the push-pull switch of this application to reach the IP67 protection safety level. In addition, the second sealing element 150D can also reduce the friction between the closed cavity 120 and the drive shaft 150C.

[0053] Actuator 140 includes at least one plunger 140C, which slidably moves within switch housing 100 in response to actuator 140 being slidably moved within switch housing 100. For example... Figure 1EAs shown, optionally, a contact spring 140D is disposed between the actuator 140 and the plunger 140C. The contact spring 140D is configured to maintain pressure on the bridging component 160 during the oscillation of the plunger 130B. Specifically, a fixing seat 140E protrudes downward from the bottom of the actuator 140, and a groove 140F is formed in the middle of the fixing seat 140E. The top of the plunger 140C is located in the groove 140F, and the bottom of the plunger 140C protrudes outside the groove 140F. The contact spring 140D is placed in the groove 140F, and the top of the contact spring 140D abuts against the top of the groove 140F, and the bottom of the contact spring 140D abuts against the top of the plunger 140C. In this embodiment, there are two plungers 140C, and correspondingly two fixing seats 140E and two contact springs 140D. The two fixing seats 140E are respectively fixed to both sides of the bottom of the actuator 140.

[0054] A bridging member 160, operably connected to a plunger 140C, is configured to slidably move the plunger 140C within the switch housing 100 to sweep the bridging member 160 relative to at least one set of electrical terminals between normally open and normally closed positions. Figures 4A-4D As shown, in this embodiment, the bridging component 160 is V-shaped, with its middle portion serving as a fulcrum. When the plunger 140C sweeps across one end of the bridging component 160, the other end of the bridging component 160 tilts up; conversely, when the plunger 140C sweeps across the other end of the bridging component 160, one end of the bridging component 160 tilts up. The number of bridging components 160 can be rationally configured according to the number of electrical terminal groups to be operated, such as being the same as the number of electrical terminal groups to be operated; alternatively, the number of plungers 140C can be the same as the number of bridging components 160 to achieve separate control of each electrical terminal group. To facilitate sliding of the plunger 160, the bottom of the plunger 160 is configured as an arc shape. By using a plunger 140C with a contact spring 140D to sweep across the bridging component 160 to open and close, friction between contacts is reduced, thereby reducing contact material loss and increasing mechanical life.

[0055] In this embodiment, as Figures 4A-4DAs shown, a terminal member 170 is arranged in the switch housing 100. The terminal member 170 includes at least one set of electrical terminals. Each set of electrical terminals includes a normally closed terminal 170A (NC terminal) and a normally open terminal 170B (NO terminal). In response to the plunger 140C being slidably moved within the switch housing 100, the bridging member 160 is configured to contact the normally closed terminal 170A at one end and to contact or disconnect the normally open terminal 170B at the other end. In this embodiment, a support seat 170C is provided on the front and rear sides of the top of each normally closed terminal 170A. A slot 170D is vertically opened in the middle of the top of each support seat 170C. A hinge shaft 160A is provided on the front and rear sides of the middle of the bridging member 160. The hinge shafts 160A on the front and rear sides of the middle of the bridging member 160 are embedded in the corresponding slots 170D to realize the sweeping of the plunger 140C on the top surface of the bridging member 160. Specifically, a stationary contact 170E is fixed to the top of the normally open terminal 170B, and a moving contact 160B is fixed to the side of the bridging component 160 opposite to the stationary contact 170E. When the plunger 140C sweeps past one end of the bridging component 160, the other end of the bridging component 160 tilts up, the moving contact 160B separates from the stationary contact 170E, and the circuit is broken; when the plunger 140C sweeps past the other end of the bridging component 160, the moving contact 160B contacts the stationary contact 170, and the circuit is connected. In this embodiment, there are two sets of electrical terminals, and correspondingly, there are two sets of bridging components 160. That is, two plungers 140 operate the two bridging components 160 to sweep between the normally open and normally closed positions relative to the two sets of electrical terminals. Specifically, the two sets of electrical terminals are arranged in opposite directions, that is, when one set of electrical terminals is in contact, the other set of electrical terminals is disconnected. Figures 4A-4B As shown, when the actuator 130 is in the first position, the gear component 150 drives the actuator 140 to move to the right end, and the front electrical terminal of the two sets of electrical terminals disconnects, while the rear electrical terminal contacts; as Figure 4C-4D As shown, when the actuator 130 is in the second position, the gear assembly 150 drives the actuator 140 to move to the left end, and the rear electrical terminal of the two sets of electrical terminals disconnects while the front electrical terminal contacts. Its control circuit diagram is shown below. Figure 6 As shown, when the actuator 130 is in the first position, the first electrical switch SW1 is turned on and the second electrical switch SW2 is turned off. When the actuator 130 is in the second position, the first electrical switch SW1 is turned off and the second electrical switch SW2 is turned on. It is understood that in other embodiments, each set of electrical terminals may also include a common terminal. In response to the plunger 140 being slidably movable within the switch housing 100, the bridging member 160 is configured to contact the common terminal at one end and the normally closed terminal 170A or normally open terminal 170B at the other end. Of course, in other alternative embodiments, the terminal member 190 may be configured with only one set of electrical terminals or two or more sets of electrical terminals as needed. The terminal design is very flexible and can be modified according to user requirements.

[0056] In alternative embodiments, such as Figures 5A-5C As shown, the push-pull switch may further include a connector 180, which includes at least one set of terminals 180A. Each set of terminals 180A corresponds one-to-one with each set of electrical terminals, and each terminal 180A is connected to the corresponding electrical terminal via a cable 180B. In this embodiment, the number of terminals 180A and electrical terminals corresponds to two sets, totaling four, labeled as serial numbers 1-4, as follows: Figure 6 As shown. Of course, it is understandable that when the number of electrical terminals is two in a set, the terminal block 180A is also configured as two in a set, that is, the number of terminal blocks 180A corresponds to the number of electrical terminals.

[0057] like Figures 7A-7B , Figures 8A-8D and Figure 9 The illustration shows a second embodiment of the push-pull switch of this application. The difference from the first embodiment is that the push-pull switch further includes a signaling module, which includes a signaling circuit. The signaling circuit senses the movement of the actuator 140 and outputs a signaling module signal indicating the sensed movement or position of the actuator 140 through at least one set of signal terminals. This signaling module signal can be an indication of the sensed movement or position of the actuator 140 and thus an indication of the motor's desired operating speed or signal. The signaling circuitry is at least partially formed on the circuit board 190 and includes a variable resistor element 190A disposed on the circuit board 190, the variable resistor element 190A having a variable resistor element contact surface 190B; the actuator 140 includes a moving member 200 configured to move relative to the variable resistor element contact surface 190B in response to movement of the actuator 140, thereby causing the moving member 200 to contact the variable resistor element contact surface 190B in a plurality of contact point configurations, whereby the effective resistance of the variable resistor element 190A is configured to vary in response to causing the moving member 200 to contact the variable resistor element contact surface 190B in each of the plurality of contact point configurations. In this embodiment, three variable resistor elements 190A are disposed on the circuit board 190, and the variable resistor elements 190A may be made of conductive materials such as carbon film or copper sheet. Each of the three variable resistor elements 190A can be composed of elongated parallel side strips of conductive material at least about 0.5 mm thick, arranged parallel to each other on the circuit board 190, but with varying lengths, for example... Figure 8C-8D As shown in the example. The variable resistor element contact surface 190B of the three variable resistor elements 190A is also configured to form as shown in the example. Figure 9The electrical switch contacts of the first electrical switch SW4 and the second electrical switch element SW5 shown can be moved by the moving member 200 to contact multiple corresponding electrical switch contacts in each of multiple different contact point configurations that contact the variable resistor element contact surfaces 190B of multiple variable resistor elements 190A, and are electrically connected according to a predetermined switching sequence. The first electrical switch element SW4 and the second electrical switch element SW5 can be connected in series with different resistor components in a set of resistors, thereby allowing the effective resistance of the variable resistor element 190A to be controllably changed by switching on the first electrical switch element SW4 and the second electrical switch element SW5 according to a predetermined switching sequence. In this embodiment, the moving member 200 includes a conductive brush 200A, and each of the conductive brushes 200A is provided with a curved conductive contact 200B at the position corresponding to each variable resistor element 190A, which can electrically bridge the respective electrical switch contacts of each of the first electrical switch elements SW4 and the second electrical switch elements SW5 formed by the variable resistor element contact surfaces 190B of the three variable resistor elements 190A. Specifically, a mounting plate 140G is vertically fixed to the bottom of the actuator 140. A mounting groove 140H, which mates with the conductive brush 200A, is formed in the middle of the mounting plate 140G. At least one fixing pin 140I protrudes from the inner side of the mounting groove 140H. An orifice 200C is formed on the conductive brush 200A corresponding to each fixing pin 140I. Through the interference fit between the fixing pins 140I on the actuator 140 and the orifices 200C on the conductive brush 200A, the conductive brush 200A can be releasably attached to the actuator 140. In other embodiments, the moving member 200 can also be configured as a slider or a roller, as needed, as long as it can move on the contact surface 190B of the variable resistor element. The signaling module of this embodiment can achieve dual-speed control in the power tool by switching the first electrical switching element SW4 and the second electrical switching element SW5. However, in alternative embodiments, additional speed levels can be achieved as needed based on the above construction principle. This embodiment uses a contact structure similar to a potentiometer to sense the movement of the actuator and output a signaling module signal. However, in other embodiments, a non-contact structure can be used instead. For example, a magnetic element can be configured on the actuator 140, and a magnetic sensor can be configured on the circuit board 190. The magnetic sensor controls the motor speed by sensing changes in magnetic flux, or by sensing changes in logic signals to control the motor speed or commutation operation. Alternatively, a shielding block can be configured on the actuator 140, and an optical sensor can be configured on the circuit board 190. The optical sensor controls the motor speed by sensing changes in the amount of light received, or by sensing the shielding state of the optical sensor to control the motor speed or commutation operation. However, the invention is not limited to these methods; various non-contact sensors such as proximity sensors and capacitive sensors can also be used instead.

[0058] In this embodiment, a terminal member 170 is arranged in the switch housing 100. The terminal member 170 includes at least one set of electrical terminals and at least one set of signal terminals. Each set of electrical terminals includes a normally closed terminal 170A (NC terminal) and a normally open terminal 170B (NO terminal). In response to the plunger 140C slidably moving within the switch housing 100, the bridging member 160 is configured to contact the normally closed terminal 170A at one end and contact or disconnect the normally open terminal 170B at the other end. Each set of signal terminals includes a common terminal 170F, a first signal terminal 170G, and a second signal terminal 170H. In response to the actuator 140 slidably moving within the switch housing, the common terminal 170F is sequentially connected or disconnected from the first signal terminal 170G and the second signal terminal 170H. In this embodiment, both electrical terminals and signal terminals are in one set. However, in other embodiments, electrical terminals and signal terminals may be configured as two or more sets as needed. Specifically, for example... Figures 8A-8B and Figure 9 As shown, when the actuator 130 is in the first position, the gear component 150 drives the actuator 140 to move to the right end, and the bridging component 160 on the normally closed terminal 170A is disconnected from the normally open terminal 170B. This disconnects the main electrical switch SW3, and both the first electrical switch element SW4 and the second electrical switch element SW5 are in the off state. Figure 8C-8D and Figure 9 As shown, when the actuator 130 is in the second position, the gear member 150 drives the actuator 140 to move to the left end, and the bridging member 160 on the normally closed terminal 170A contacts the normally open terminal 170B to turn on the main electrical switch SW3, thereby connecting power from the power source to the motor. The first electrical switch element SW4 and the second electrical switch element SW5 are both in the open state to indicate the user's desired motor operating speed. In this embodiment, the moving member 200 is operatively connected to the actuator 140 such that, during operation, after the actuator 140 has contacted the bridging member 160 on the normally closed terminal 170A with the normally open terminal 170B to turn on the main electrical switch SW1, further linear movement of the actuator 140 causes the moving member 200 to move to contact the electrical switch contacts of the first electrical switch element SW4 and the second electrical switch element SW5 in a predetermined sequence with various contact points. Specifically, as... Figure 8C-8D and Figure 9As shown, actuator 140 is configured such that the main electrical switch SW1 is first turned on after actuator 140 has moved linearly from the OFF position to the ON position by approximately 1.5 ± 0.3 mm. Then, when actuator 140 moves further linearly to a distance of approximately 2.8 ± 0.3 mm from the OFF position, the first electrical switch element SW4 is turned on by the moving member 200 to change the effective resistance of the variable resistor element 190A to a first resistance value. Subsequently, when actuator 140 moves further linearly to a distance of approximately 4.3 ± 0.3 mm from the OFF position, the second electrical switch element SW5 is further turned on by the moving member 200 to change the effective resistance of the variable resistor element 190A to a second resistance value. Accordingly, the variable voltage signal will change, thereby indicating the user-desired motor operating speed or signal.

[0059] In view of the above, it should be understood that the embodiments of this application can provide various advantages over the prior art. First, the use of a plunger 140C with a contact spring 140D to sweep the bridging component 160 for opening and closing reduces friction between contacts, thereby reducing contact material loss and increasing mechanical life. Second, the bridging component 160 has two independent contacts that can be interchanged as needed, and the contact distance can be changed; even the contacts can be replaced with a circuit board to obtain signals or speed changes. Third, the lengths of the actuator 130, the first rack 130F, and the second rack 140A are specific because they can control the activation point and travel distance of the switch, which is achieved through the placement of the first rack 130F and the second rack 140A and the length of the actuator 130. The movement direction of the actuator 130 is very flexible and can move vertically, horizontally, or even at different tilt angles according to user needs because the gear design can mesh at different angles. Finally, the first sealing element 110 provides inlet protection for the opening of the switch housing 100, and the closed cavity 120 separates the top actuator 130 from the sealed contact portion inside the closed cavity 120. A second sealing element 150D is arranged at the connection between the drive shaft 150C and the closed cavity 120, so that the sealed contact portion inside the closed cavity 120 can be waterproof and dustproof, thereby enabling the push-pull switch of this application to reach the IP67 protection safety level. The second sealing element 150D can also reduce the friction between the closed cavity 120 and the drive shaft 150C.

[0060] Those skilled in the art will understand that the application described herein is susceptible to variations and modifications beyond those specifically described, without departing from the scope of this application. All such variations and modifications that are obvious to those skilled in the art should be considered to fall within the spirit and scope of this application as broadly described above. It should be understood that this application includes all such variations and modifications. This application also includes all steps and features individually or collectively referenced or indicated in the specification, as well as any combination and all combinations of any two or more steps or features.

[0061] Any reference to prior art in this specification is not, and should not be construed as, an admission or in any way an implication that such prior art is part of common general knowledge.

[0062] The above embodiments are preferred implementations of this application. In addition, this application can be implemented in other ways. Any obvious substitutions without departing from the concept of this application are within the protection scope of this application.

Claims

1. A push-pull switch, characterized in that, include: A switch housing, wherein terminal components are arranged in the switch housing, and the terminal components include at least one set of electrical terminals; An actuator is configured for push-pull movement between a first position and a second position through an orifice in the switch housing, wherein in the first position the actuator is pulled out of the switch housing relative to the interior through the orifice, and in the second position the actuator is pushed out of the switch housing relative to the interior through the orifice. An actuator, operably connected to the actuator rod, is configured to slidably move within the switch housing in a direction parallel or intersecting the direction of movement of the actuator rod in response to a push-pull movement of the actuator; the actuator includes at least one plunger, which slidably moves within the switch housing in response to the slidable movement of the actuator within the switch housing. A bridging member, operably connected to the plunger, is configured to slidably move the plunger within the switch housing to sweep the bridging member relative to at least one set of the electrical terminals between normally open and normally closed positions.

2. The push-pull switch according to claim 1, characterized in that: The actuator includes a first rack arranged along the direction of movement of the actuator, and the actuator includes a second rack arranged parallel or intersecting the direction of movement of the actuator. A gear member is disposed within the switch housing, meshing with the first rack and the second rack respectively. In response to a push-pull movement of the actuator, the first rack slidably moves along the direction of movement of the actuator, thereby driving the gear member to rotate. The gear member further drives the second rack to slidably move along the direction of movement of the actuator, parallel or intersecting the direction of movement of the actuator, so that the actuator can slidably move within the switch housing in a direction parallel or intersecting the direction of movement of the actuator.

3. The push-pull switch according to claim 2, characterized in that: The gear assembly includes a first gear and a second gear fixed coaxially. The first gear meshes with the first rack, and the second gear meshes with the second rack. In response to the push-pull movement of the actuator, the first rack can slide along the movement direction of the actuator, thereby driving the first gear to rotate. The second gear rotates synchronously with the first gear, further driving the second rack to slide in a direction parallel or intersecting the movement direction of the actuator, so that the actuator can slide within the switch housing in a direction parallel or intersecting the movement direction of the actuator.

4. The push-pull switch according to any one of claims 1-3, characterized in that: The actuator is configured to slide within the switch housing in a direction substantially perpendicular to the direction of movement of the actuator rod.

5. The push-pull switch according to any one of claims 1-3, characterized in that: The push-pull switch also includes a first sealing element configured to be arranged around the actuator to prevent particles, dust and water from entering the switch housing through the orifice.

6. The push-pull switch according to claim 3, characterized in that: The switch housing includes a first housing component and a second housing component detachably mounted on the bottom of the first housing component. The push-pull switch also includes a closed cavity disposed within the first housing component. The first rack and the first gear are located outside the closed cavity, and the actuator and the second gear are located inside the closed cavity. The first gear and the second gear are coaxially fixed together by a drive shaft. The drive shaft passes through the side wall of the closed cavity and is provided with a second sealing element. The second sealing element is configured to prevent particles, dust, and water from entering the closed cavity through the connection between the drive shaft and the closed cavity.

7. The push-pull switch according to any one of claims 1-3, characterized in that: A return spring is disposed between the switch housing and the actuator rod. The return spring is configured to return the actuator rod to its starting position after it is pushed inward.

8. The push-pull switch according to any one of claims 1-3, characterized in that: A contact spring is disposed between the actuator and the plunger, the contact spring being configured to maintain pressure on the bridging component throughout the oscillation of the plunger.

9. The push-pull switch according to any one of claims 1-3, characterized in that: Each set of electrical terminals includes a normally closed terminal and a normally open terminal. In response to the plunger being slidably moved within the switch housing, the bridging member is configured to contact the normally closed terminal at one end and to contact or disconnect the normally open terminal at the other end.

10. The push-pull switch according to claim 9, characterized in that: The push-pull switch also includes a connector, which includes at least one set of terminals, each set of terminals corresponding to each set of electrical terminals, and each terminal is connected to the corresponding electrical terminal via a cable.

11. A push-pull switch, characterized in that, include: A switch housing, wherein terminal components are arranged in the switch housing, the terminal components including at least one set of electrical terminals and at least one set of signal terminals; An actuator is configured for push-pull movement between a first position and a second position through an orifice in the switch housing, wherein in the first position the actuator is pulled out of the switch housing relative to the interior through the orifice, and in the second position the actuator is pushed out of the switch housing relative to the interior through the orifice. An actuator, operably connected to the actuator rod, is configured to slidably move within the switch housing in a direction parallel or intersecting the direction of movement of the actuator rod in response to a push-pull movement of the actuator; the actuator includes at least one plunger, which slidably moves within the switch housing in response to the slidable movement of the actuator within the switch housing. A bridging member, operably connected to the plunger, is configured to slidably move the plunger within the switch housing to allow the bridging member to sweep between normally open and normally closed positions relative to at least one set of the electrical terminals. A signaling module includes a signaling circuit for sensing the movement of the actuator and outputting a signaling module signal indicating the sensed movement or position of the actuator through at least one set of signal terminals.

12. The push-pull switch according to claim 11, characterized in that: The actuator includes a first rack arranged along the direction of movement of the actuator, and the actuator includes a second rack arranged parallel or intersecting the direction of movement of the actuator. A gear member is disposed within the switch housing, meshing with the first rack and the second rack respectively. In response to a push-pull movement of the actuator, the first rack slidably moves along the direction of movement of the actuator, thereby driving the gear member to rotate. The gear member further drives the second rack to slidably move along the direction of movement of the actuator, parallel or intersecting the direction of movement of the actuator, so that the actuator can slidably move within the switch housing in a direction parallel or intersecting the direction of movement of the actuator.

13. The push-pull switch according to claim 12, characterized in that: The gear assembly includes a first gear and a second gear fixed coaxially. The first gear meshes with the first rack, and the second gear meshes with the second rack. In response to the push-pull movement of the actuator, the first rack can slide along the movement direction of the actuator, thereby driving the first gear to rotate. The second gear rotates synchronously with the first gear, further driving the second rack to slide in a direction parallel or intersecting the movement direction of the actuator, so that the actuator can slide within the switch housing in a direction parallel or intersecting the movement direction of the actuator.

14. The push-pull switch according to any one of claims 11-13, characterized in that: The actuator is configured to slide within the switch housing in a direction substantially perpendicular to the direction of movement of the actuator rod.

15. The push-pull switch according to any one of claims 11-13, characterized in that: The signaling circuit is at least partially formed on a circuit board and includes a variable resistor element disposed on the circuit board, the variable resistor element having a variable resistor element contact surface; The actuator includes a movable member configured to move relative to the contact surface of the variable resistor element in response to movement of the actuator, thereby causing the movable member to make contact with the contact surface of the variable resistor element in a plurality of contact point configurations, whereby the effective resistance of the variable resistor element is configured to vary in response to causing the movable member to make contact with the contact surface of the variable resistor element in each of the plurality of contact point configurations.

16. The push-pull switch according to any one of claims 11-13, characterized in that: The push-pull switch also includes a first sealing element configured to be arranged around the actuator to prevent particles, dust and water from entering the switch housing through the orifice.

17. The push-pull switch according to claim 13, characterized in that: The switch housing includes a first housing component and a second housing component detachably mounted on the bottom of the first housing component. The push-pull switch also includes a closed cavity disposed within the first housing component. The first rack and the first gear are located outside the closed cavity, and the actuator and the second gear are located inside the closed cavity. The first gear and the second gear are coaxially fixed together by a drive shaft. The drive shaft passes through the side wall of the closed cavity and is provided with a second sealing element. The second sealing element is configured to prevent particles, dust, and water from entering the closed cavity through the connection between the drive shaft and the closed cavity.

18. The push-pull switch according to any one of claims 11-13, characterized in that: A return spring is disposed between the switch housing and the actuator rod. The return spring is configured to return the actuator rod to its starting position after it is pushed inward.

19. The push-pull switch according to any one of claims 11-13, characterized in that: A contact spring is disposed between the actuator and the plunger, the contact spring being configured to maintain pressure on the bridging component throughout the oscillation of the plunger.

20. The push-pull switch according to any one of claims 11-13, characterized in that: Each set of electrical terminals includes a normally closed terminal and a normally open terminal. In response to the plunger being slidably moved within the switch housing, the bridging member is configured to contact the normally closed terminal at one end and to contact or disconnect the normally open terminal at the other end.

21. The push-pull switch according to any one of claims 11-13, characterized in that: Each group of signal terminals includes a common terminal, a first signal terminal, and a second signal terminal. In response to the actuator being slidably moved within the switch housing, the common terminal is sequentially connected or disconnected from the first signal terminal and the second signal terminal.

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