Push type contact switch

Abstract

The utility model relates to the technical field of switches, in particular to a push type contact switch, which comprises a rubber shell, a push mechanism, a movable contact piece and a static contact piece, the rubber shell comprises a cover body and a bottom plate, the top of the bottom plate is concavely provided with a mounting groove penetrating through the bottom plate, the static contact piece is mounted in the mounting groove from one port of the mounting groove to be limited, and the movable contact piece is fixed on the cover body. The cover body is buckled on the bottom plate and presses the movable contact piece and the static contact piece downwards, so that the movable contact piece and the static contact piece are pressed and fixed in the mounting groove, the operation of twisting a bolt is not needed, the production efficiency of an enterprise is improved, and meanwhile, the switch is convenient to maintain in the later period. The pushing and pressing mechanism is movably arranged between the cover body and the bottom plate, and contact and separation of the movable contact piece and the static contact piece are achieved through movement of the pushing and pressing mechanism.

Description

Technical Field

[0001] The present application relates to the technical field of switches, and more particularly, to a push-type contact switch. Background Art

[0002] A switch is used in a circuit to conduct current to power electrical appliances or to block current flow to stop the appliances from working. Switches include electronic switches and mechanical switches. A push-type contact switch is a type of mechanical switch. The working principle of a push-type contact switch is to control the on and off of the circuit based on the physical contact and separation of its contacts.

[0003] In the related art, a push-type contact switch usually includes a plastic shell, a static contact piece, a moving contact piece and a pushing mechanism. The moving contact piece and the static contact piece are both metal sheets and are usually locked and fixed by bolts with a pressing platform. Specifically, the plastic shell is provided with two threaded holes, the pressing platform is fixed with the bolts, and the combination of the pressing platform and the bolts is two groups of corresponding moving contact pieces and static contact pieces. The bolts are threadedly connected and fixed in the threaded holes. The moving contact piece and the static contact piece are fixed to the plastic shell by pressing down the pressing platform. The moving contact piece and the static contact piece have overlapping positions. The moving contact piece is pressed into contact with the static contact piece by pushing the pushing mechanism to move, so that the moving contact piece and the static contact piece are connected and conductive.

[0004] When adopting the above-mentioned related technologies, tools are needed to twist the bolts when producing and installing the moving contact piece and the stationary contact piece through bolt locking, which is troublesome and leads to low production efficiency, and is also inconvenient during later disassembly and maintenance. Utility Model Content

[0005] In order to solve the problem in the related art that the moving contact piece and the stationary contact piece are fixed on the plastic shell by bolt locking, which requires tools to twist the bolts during production and installation, which is troublesome and reduces production efficiency and is inconvenient during later disassembly and maintenance, the present application provides a push contact switch.

[0006] A push-type contact switch, comprising a plastic shell, a pushing mechanism, a moving contact piece, and a stationary contact piece, wherein the plastic shell comprises a cover body and a bottom plate, wherein a mounting groove penetrating the bottom plate is concavely arranged on the top of the bottom plate, wherein the stationary contact piece is inserted into the mounting groove through one end of the mounting groove to be limited, and one end of the stationary contact piece is exposed from the bottom plate, wherein the moving contact piece is inserted into the mounting groove through the other end of the mounting groove to be limited, and one end of the moving contact piece is exposed from the bottom plate, and the other end of the moving contact piece is arranged to be an elastic contact piece inclined upward The elastic contact arm is suspended above the static contact piece, the cover body is buckled on the bottom plate and presses down the movable contact piece and the static contact piece, the pushing mechanism is movably arranged between the cover body and the bottom plate, the cover body is provided with a through hole for the pushing mechanism to partially pass through and move, the elastic contact arm of the movable contact piece is pressed down by the pushing mechanism through horizontal movement so that the elastic contact arm contacts the static contact piece to conduct current, and the elastic contact arm is rebounded and reset by the return of the pushing mechanism to block the current conduction.

[0007] By adopting the above technical scheme, the installation groove limits the moving contact piece and the static contact piece so that the moving contact piece and the static contact piece are in the same straight line during installation, which is convenient for positioning; the cover body snaps together with the bottom plate and presses down the moving contact piece and the static contact piece to press the moving contact piece and the static contact piece into the installation groove so that the moving contact piece and the static contact piece are not easy to move out of the installation groove to achieve fixed installation of the moving contact piece and the static contact piece, and there is no need to twist the bolt operation, which is more convenient and beneficial for enterprises to improve production efficiency; the cover body snaps together with the bottom plate as a detachable connection method, which is convenient for removing and repairing the moving contact piece, the static contact piece and the pushing mechanism during the later maintenance of the switch.

[0008] Preferably, the cover body includes a main body, a movable groove recessed at the bottom of the main body, and buckle plates protruding at opposite sides of the bottom of the main body, the through hole is arranged at the top of the main body and connected with the movable groove, the two buckle plate side walls are provided with snap-fitting grooves, and the two pairs of sides of the bottom plate are provided with buckle bodies matching the snap-fitting grooves, and the bottom plate and the cover body are snapped and fixed by the buckle bodies being snapped into the snap-fitting grooves, and the bottom surface of the main body is provided with a first protrusion that penetrates into the installation groove and presses against the moving contact piece, and a second protrusion that penetrates into the installation groove and presses against the static contact piece, the elastic contact arm is in a position corresponding to the movable groove, and the pushing mechanism is movable in the movable groove.

[0009] By adopting the above technical scheme, the two buckle plates are slightly opened to allow the bottom plate to be inserted between the two buckle plates. When the first protrusion presses the moving contact piece and the second protrusion presses the static contact piece, the buckle body is in the position of the aligned buckle groove to release the two buckle plates. The buckle body is inserted into the buckle groove to limit the cover body to achieve rapid buckling and fixing of the cover body and the bottom plate and to enable the cover body to press the moving contact piece and the static contact piece into the installation groove. By prying the two buckle plates to make them slightly open, it is convenient to quickly separate the cover body and the bottom plate. The cover body and the bottom plate can be fixed and disassembled quickly, which is beneficial to improving the production efficiency and later maintenance efficiency of the enterprise.

[0010] Preferably, a first boss and a second boss are respectively provided at both ends of the mounting groove, the moving contact piece is provided with a first opening matching the first boss, the moving contact piece is inserted into the first boss through the first opening, the stationary contact piece is provided with a second opening matching the second boss, the stationary contact piece is inserted into the second boss through the second opening.

[0011] By adopting the above technical solution, the first boss cooperates with the first opening to position the moving contact piece in the installation groove, and the second boss cooperates with the second opening to position the moving contact piece in the installation groove. At the same time, through the limitation of the first boss and the second boss, the moving contact piece and the static contact piece are more stable in the installation groove and not easy to deflect.

[0012] Preferably, the bottom surface of the installation groove is provided with slots on opposite sides of the first convex column, and the movable contact piece is provided with plugs matching the slots extending downward on opposite sides of the first opening, and the two plugs are respectively inserted into the two slots.

[0013] By adopting the above technical solution, the insert is inserted into the slot to obtain a limit to further locate the position of the moving contact piece, making the position of the moving contact piece more accurate. At the same time, the deflection of the moving contact piece is further limited to make the moving contact piece more stable. When the pushing mechanism is pressed down, the elastic contact arm is in stable contact with the static contact piece, so that the current flows stably.

[0014] Preferably, the pushing mechanism comprises a pushing handle, a movable plate, a pressing block, a spring, and a steel ball, the movable plate is movable in the movable groove, the pushing handle is fixedly connected to the top of the movable plate and passes through the through hole to the outside of the cover body, the pressing block is fixed to the bottom surface of the movable plate and abuts against the movable contact piece, the bottom surface of the movable plate is concavely provided with a receiving groove on one side of the pressing block, the spring is installed in the receiving groove, the steel ball is stuck in the bottom end of the spring to act on the spring, the top of the bottom plate is concavely provided with a "W"-shaped groove, the "W"-shaped groove has two groove bottoms to form two limiting positions, the steel ball is reciprocated to two limiting positions by the movable plate, when the steel ball is in one limiting position, the pressing block is on the side of the movable contact piece away from the elastic contact arm, when the steel ball moves to the other limiting position, the pressing block moves to the elastic contact arm and gradually presses the elastic contact arm down, and when the steel ball is in place, the elastic contact arm contacts with the static contact piece.

[0015] By adopting the above technical scheme, the push handle passes through the cover body to facilitate manual pushing to realize the movement of the movable plate. The horizontal movement of the movable plate drives the lower pressure block to move horizontally. The lower pressure block moves to the elastic contact arm to realize pressing the elastic contact arm downward to contact the static contact piece. The lower pressure block returns to the side of the moving contact piece away from the elastic contact arm to release the pressure on the elastic contact arm, so that the elastic contact arm rebounds to the original position and separates from the static contact piece. The steel ball is restricted in both limit positions. In the absence of external force, the steel ball and the spring cooperate to move the limit movable plate, so that the moving contact piece and the static contact piece are relatively stable in the contact state and the non-contact state. The spring moves the steel ball upward and resets it to realize the movement of the steel ball in the "W"-shaped groove when the movable plate moves.

[0016] Preferably, the main body of the cover body is provided with a guide groove parallel to the installation groove on the bottom surface of the movable groove, and the top surface of the movable plate is provided with a guide bar matching the guide groove, and the guide bar is inserted into the installation groove for movement.

[0017] By adopting the above technical solution, the guide groove and the guide strip cooperate with the moving direction of the limiting movable plate, so that the movable plate is not easily deviated during movement, and the pressing block moves on a stable route to act on the movable contact piece.

[0018] The beneficial technical effects of this application are:

[0019] 1. The installation groove limits the moving contact and the static contact so that they are in the same straight line during installation, which is convenient for positioning. The cover body is buckled with the bottom plate and presses down the moving contact and the static contact to press the moving contact and the static contact into the installation groove so that the moving contact and the static contact are not easy to move out of the installation groove to achieve fixed installation of the moving contact and the static contact. There is no need to twist the bolts, which is more convenient and beneficial to enterprises to improve production efficiency. The cover body is buckled with the bottom plate for a detachable connection, which is convenient for removing and repairing the moving contact, the static contact and the pushing mechanism during the later maintenance of the switch.

[0020] 2. The first boss cooperates with the first opening to position the moving contact piece in the installation groove, and the second boss cooperates with the second opening to position the moving contact piece in the installation groove. At the same time, the first boss and the second boss limit the moving contact piece and the static contact piece in the installation groove, which is more stable and less likely to deviate. The insert piece is inserted into the slot to obtain a limit to further position the moving contact piece, making the position of the moving contact piece more accurate. At the same time, the deflection of the moving contact piece is further limited to make the moving contact piece more stable. When the pushing mechanism is pressed down, the elastic contact arm is in stable contact with the static contact piece, so that the current flows stably.

[0021] 3. In the absence of external force, the steel ball and the spring cooperate with the limit movable plate to move, so that the moving contact piece and the static contact piece are in a relatively stable contact state and non-contact state. The spring moves the steel ball upward and resets it to achieve the movement of the steel ball in the "W"-shaped groove when the movable plate moves. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The figure is a schematic diagram of the combined structure of a push-type contact switch of this embodiment.

[0023] Figure 2 This is a schematic diagram of the combined structure of a push-type contact switch of this embodiment from another angle.

[0024] Figure 3 The figure is an exploded view of a push-type contact switch of the present embodiment.

[0025] 1. Plastic shell; 11. Cover body; 111. Through hole; 112. Main body; 113. Movable groove; 114. Buckle plate; 115. Snap-fit ​​groove; 116. First protrusion; 117. Second protrusion; 118. Guide groove; 12. Bottom plate; 121. Mounting groove; 122. Buckle body; 123. First protrusion; 124. Second protrusion; 125. Slot; 126. Support protrusion; 127. "W"-shaped groove; 2. Push mechanism; 21. Push handle; 22. Movable plate; 221. Accommodating groove; 222. Guide strip; 23. Pressing block; 24. Spring; 25. Steel ball; 3. Moving contact piece; 31. Elastic contact arm; 311. Contact block; 32. First opening; 33. Insert piece; 4. Static contact piece; 41. Second opening; 42. Fitting groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] Reference Figure 1 , Figure 2 and Figure 3 A push-type contact switch, comprising a plastic shell 1, a pushing mechanism 2, a moving contact piece 3, and a stationary contact piece 4. The plastic shell 1 comprises a cover body 11 and a bottom plate 12. The top of the bottom plate 12 is concavely provided with a mounting groove 121 penetrating the bottom plate 12. The number of the mounting grooves 121 is three, and the three mounting grooves 121 are evenly spaced in the width direction of the bottom plate 12. The moving contact piece 3 and the stationary contact piece 4 are both made of conductive metal and the number of both is three corresponding to the three mounting grooves 121. The stationary contact piece 4 is limited by being installed in the mounting groove 121 by one end of the mounting groove 121, and one end of the stationary contact piece 4 is The bottom plate 12 is exposed and the end is bent close to the side wall of the bottom plate 12 for inserting into the external electrical connection hole. The other end of the moving contact piece 3 is inserted into the mounting groove 121 to be limited. One end of the moving contact piece 3 is exposed to the bottom plate 12 and the end is bent close to the side wall of the bottom plate 12 for inserting into the external electrical connection hole. The other end of the moving contact piece 3 is set to an elastic contact arm 31 inclined upward. The elastic contact arm 31 is suspended above the static contact piece 4 and moves downward under pressure to contact with the static contact piece 4 to conduct current. When the contact pressure is applied, the elastic contact arm 31 can rebound and reset and separate from the static contact piece 4 to block the current conduction. The cover body 11 is buckled on the bottom plate 12 and presses down the three moving contact pieces 3 and the three static contact pieces 4 to press the three moving contact pieces 3 and the three static contact pieces 4 into the three installation grooves 121 respectively, so as to realize the fixed installation of the moving contact piece 3 and the static contact piece 4. This installation method does not require twisting the bolts and is more convenient to operate, which is conducive to improving the production efficiency of the enterprise. The pushing mechanism 2 is movably arranged between the cover body 11 and the bottom plate 12. The cover body 11 is provided with a through hole 111 for the pushing mechanism 2 to partially penetrate and move. 2 horizontally moves and presses down the elastic contact arms 31 of the three moving contact pieces 3 at the same time, so that the three elastic contact arms 31 are respectively in contact with the corresponding static contact pieces 4 to conduct current, and the elastic contact arms 31 rebound and reset to block the current conduction through the return of the pushing mechanism 2. In this embodiment, the cover body 11 is buckled with the bottom plate 12 to form a detachable connection mode, which is convenient for removing and maintaining the moving contact piece 3, the static contact piece 4 and the pushing mechanism 2 during the later maintenance of the switch. The arrangement of the three moving contact pieces 3 and the three static contact pieces 4 can realize the simultaneous control of the conduction and blocking of three currents, which is suitable for the scene of synchronous operation of three electrical appliances.

[0028] Reference Figure 2 and Figure 3 The cover body 11 includes a body 112, a movable groove 113 recessed at the bottom of the body 112, and buckle plates 114 protruding at opposite sides of the bottom of the body 112. The through hole 111 is arranged at the top of the body 112 and communicates with the movable groove 113. The side walls of the two buckle plates 114 are provided with buckle grooves 115. The spacing between the two buckle plates 114 is equal to the width of the bottom plate 12. Buckle bodies 122 matching the buckle grooves 115 are arranged on opposite sides of the bottom plate 12. The upper part of the buckle body 122 is arranged with an inclined surface. The bottom surface of the body 112 is provided with three first protrusions 116 arranged at intervals in the width direction thereof, and the three first protrusions 116 are respectively aligned with the positions of the moving contact pieces 3 in the three mounting grooves 121. The bottom surface of the body 112 is also provided with three second protrusions 117 arranged at intervals in the width direction thereof, and the three second protrusions 117 are respectively aligned with the positions of the stationary contact pieces 4 in the three mounting grooves 121. When assembling, the pushing mechanism 2 is placed into the movable groove 113, and the bottom plate 12 is inserted into the two The two buckle plates 114 are between the buckle plates 114, and the inclined surface makes the two buckle plates 114 slightly open when the two buckle plates 114 contact the buckle body 122. When the buckle groove 115 is aligned with the buckle body 122, the buckle body 122 is inserted into the buckle groove 115 to realize the quick buckling and fixing of the cover body 11 and the bottom plate 12. At this time, the three first protrusions 116 are respectively inserted into the three installation grooves 121 to press the moving contact piece 3 in the installation groove 121, and the three second protrusions 117 are respectively inserted into the three installation materials to press the moving contact piece 3 in the installation groove 121 The movable contact piece 3, the pushing mechanism 2 abuts against the bottom surface of the movable groove 113 and the movable contact piece 3 is restricted by the movable groove 113 and can only move horizontally in the movable groove 113. This buckling method makes the installation efficiency of the cover body 11 and the bottom plate 12 high, which is convenient for improving the production efficiency of the enterprise. When removing the cover body 11, it is only necessary to pry the two buckle plates 114 to make the two buckle plates 114 slightly open and then pull the bottom plate 12 out from between the two buckle plates 114 to realize the disassembly of the cover body 11 and the bottom plate 12. The disassembly is fast, which is beneficial to improving the efficiency of later maintenance.

[0029] Reference Figure 3 Furthermore, both ends of each mounting groove 121 are provided with a first boss 123 and a second boss 124, each movable contact piece 3 is provided with a first opening 32 matching the first boss 123, and the movable contact piece 3 is inserted into the first boss 123 through the first opening 32 when being installed, and each static contact piece 4 is provided with a second opening 41 matching the second boss 124, and the static contact piece 4 is inserted into the second boss 124 through the second opening 41 when being installed, and the first boss 123 cooperates with the first opening 32 to position the movable contact piece 3 in the mounting groove 121, and the second boss 124 cooperates with the second opening 41 to position the movable contact piece 3 in the mounting groove 121, and at the same time, through the limiting of the first boss 123 and the second boss 124, the movable contact piece 3 and the static contact piece 4 are more stable and not easy to deflect in the mounting groove 121.

[0030] Reference Figure 3 Furthermore, each mounting groove 121 has two pairs of recessed slots 125 on both sides of the first convex column 123 on the bottom surface, and each movable contact piece 3 has insert pieces 33 matching the slots 125 extending downward on the opposite sides of the first opening 32. The two insert pieces 33 on a movable contact piece 3 are respectively inserted into the two recessed slots 125 on the bottom surface of the corresponding mounting groove 121. The insert pieces 33 are inserted into the slots 125 to obtain a limit to further position the movable contact piece 3, making the position of the movable contact piece 3 more accurate. At the same time, the deflection of the movable contact piece 3 is further limited to make the movable contact piece 3 more stable. When the pushing mechanism 2 is pressed down, the elastic contact arm is in stable contact with the static contact piece 4, so that the current flows stably.

[0031] Reference Figure 3 Furthermore, a supporting protrusion 126 is provided in each mounting groove 121, and the portion of each static contact piece 4 in the mounting groove 121 is bent to form a fitting groove 42 matching the supporting protrusion 126 in the mounting groove 121. The static contact piece 4 is supported by fitting the supporting protrusion 126 through the fitting groove 42, making the static contact piece 4 more stable in that it is not easy to swing out of position during the contact process of the moving contact piece 3 and the installation process. The supporting protrusion 126 further positions the static contact piece 4 in the mounting groove 121.

[0032] Reference Figure 2 and Figure 3The pushing mechanism 2 includes a push handle 21, a movable plate 22, a pressing block 23, a spring 24, and a steel ball 25. The movable plate 22 is movable in the movable groove 113. The push handle 21 is fixedly connected to the top of the movable plate 22 and penetrates into the outside of the cover body 11 through the through hole 111 for manual pushing to make the movable plate 22 movable. The number of the pressing blocks 23 is three, and the three pressing blocks 23 are arranged at intervals in the width direction of the movable plate 22. When the movable plate 22 is installed in the movable groove 113, the three pressing blocks 23 respectively abut against the three moving contact pieces 3. The bottom surface of the movable plate 22 is concavely provided with a accommodating groove 221 matching the spring 24 between two adjacent pressing blocks 23. The number of the springs 24 is two, and the two springs 24 are respectively installed in the two accommodating grooves 221 to be limited. The number of the steel balls 25 is two, and the two steel balls 25 are respectively stuck in the bottom ends of the two springs 24 and act on the springs 24. The top of the bottom plate 12 is concave between two adjacent mounting grooves 121 A "W"-shaped groove 127 is provided, each of which has two groove bottoms to form two limit positions, and each of which corresponds to a combination of a spring 24 and a steel ball 25. When the steel ball 25 is in one limit position, the pressing block 23 is on the side of the movable contact piece 3 away from the elastic contact arm 31, and the elastic contact arm 31 and the static contact piece 4 are in a separated state. When the steel ball 25 is in the other limit position, the pressing block 23 is in a state of pressing the elastic contact arm 31 to make the elastic contact arm 31 contact with the static contact piece 4. The steel ball 25 is restricted in both limit positions. In the absence of external force, the steel ball 25 and the spring 24 cooperate with the limit movable plate 22 to move, so that the movable contact piece 3 and the static contact piece 4 are in a contact state and a non-contact state. The horizontal movement of the movable plate 22 drives the pressing block 23, the spring 24 and the steel ball 25 to move horizontally, and the spring 24 moves the steel ball 25 upward and resets the steel ball 25 to realize the movement of the steel ball 25 from one limit position to another limit position.

[0033] Reference Figure 2 and Figure 3 The width of the through hole 111 is set to match the width of the push handle 21, and the length of the through hole 111 is adjusted so that when the push handle 21 abuts against one side wall of the through hole 111, the steel ball 25 is in a restricted position, and when the push handle 21 abuts against the other side wall of the through hole 111, the steel ball 25 is in another restricted position. This setting is beneficial to reducing the situation where the lower pressing block 23 moves too far.

[0034] Reference Figure 3 Each elastic contact arm 31 is provided with a contact block 311, and the contact block 311 is wider and thicker than the elastic contact arm 31. The contact block 311 is in contact with the static contact piece 4, which is conducive to the passage of a larger current.

[0035] Reference Figure 3Furthermore, the main body 112 of the cover body 11 is provided with a guide groove 118 (not shown in the figure) parallel to the mounting groove 121 on the bottom surface of the movable groove 113, and the top surface of the movable plate 22 is provided with a guide bar 222 matching the guide groove 118, and the guide bar 222 is inserted into the mounting groove 121 for movement. The number of guide grooves 118 is two, and the number of guide bars 222 is correspondingly two. The guide groove 118 and the guide bar 222 cooperate to limit the movable direction of the movable plate 22, so that the movable plate 22 is not easily displaced when it moves, so that the lower pressing block 23 moves on a stable route to act on the movable contact piece 3.

[0036] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A push-type contact switch, characterized in that: The invention comprises a plastic shell, a pushing mechanism, a moving contact piece and a static contact piece, wherein the plastic shell comprises a cover body and a bottom plate, the top of the bottom plate is concavely provided with a mounting groove which runs through the cover body, the static contact piece is installed in the mounting groove by one end of the mounting groove to be limited, and one end of the static contact piece is exposed from the bottom plate, the moving contact piece is installed in the mounting groove by the other end of the mounting groove to be limited, and one end of the moving contact piece is exposed from the bottom plate, the other end of the moving contact piece is arranged to be an elastic contact arm inclined upward, the elastic contact arm is suspended above the static contact piece, the cover body is buckled on the bottom plate and presses down the moving contact piece and the static contact piece, the pushing mechanism is movably arranged between the cover body and the bottom plate, the cover body is provided with a through hole for the pushing mechanism to partially pass through and move, the elastic contact arm of the moving contact piece is pressed down by the pushing mechanism horizontally so that the elastic contact arm contacts with the static contact piece to conduct current, and the elastic contact arm is rebounded and reset to block current conduction through the return of the pushing mechanism.

2. A push-type contact switch according to claim 1, characterized in that: The cover body includes a main body, a movable groove recessed at the bottom of the main body, and buckle plates protruding at opposite sides of the bottom of the main body, the through hole is arranged at the top of the main body and connected with the movable groove, the two buckle plate side walls are provided with snap-fitting grooves, and the two pairs of sides of the bottom plate are provided with buckle bodies matching the snap-fitting grooves, and the bottom plate and the cover body are snapped and fixed by the buckle bodies being snapped into the snap-fitting grooves, and the bottom surface of the main body is provided with a first protrusion that penetrates into the installation groove and presses against the moving contact piece and a second protrusion that penetrates into the installation groove and presses against the static contact piece, the elastic contact arm is in a position corresponding to the movable groove, and the pushing mechanism is active in the movable groove.

3. A push-type contact switch according to claim 1, characterized in that: The two ends of the mounting groove are respectively provided with a first boss and a second boss, the moving contact piece is provided with a first opening hole matching the first boss, the moving contact piece is inserted into the first boss through the first opening, the stationary contact piece is provided with a second opening hole matching the second boss, the stationary contact piece is inserted into the second boss through the second opening.

4. A push-type contact switch according to claim 3, characterized in that: The bottom surface of the installation groove is provided with slots on opposite sides of the first convex column, and the movable contact piece is provided with inserting pieces matching the slots extending downward on opposite sides of the first opening, and the two inserting pieces are respectively inserted into the two slots.

5. A push-type contact switch according to claim 2, characterized in that: The pushing mechanism comprises a pushing handle, a movable plate, a pressing block, a spring, and a steel ball, the movable plate is movable in the movable groove, the pushing handle is fixedly connected to the top of the movable plate and passes through the through hole to the outside of the cover body, the pressing block is fixed to the bottom surface of the movable plate and abuts against the movable contact piece, the bottom surface of the movable plate is concavely provided with a receiving groove on one side of the pressing block, the spring is installed in the receiving groove, the steel ball is stuck in the bottom end of the spring to act on the spring, the top of the bottom plate is concavely provided with a "W"-shaped groove, the "W"-shaped groove has two groove bottoms to form two limiting positions, the steel ball is reciprocated to two limiting positions by the movable plate, when the steel ball is in one limiting position, the pressing block is on the side of the movable contact piece away from the elastic contact arm, when the steel ball moves to the other limiting position, the pressing block moves to the elastic contact arm and gradually presses the elastic contact arm down, and when the steel ball is in place, the elastic contact arm contacts the static contact piece.

6. A push-type contact switch according to claim 5, characterized in that: The main body of the cover body is provided with a guide groove parallel to the installation groove on the bottom surface of the movable groove, and the top surface of the movable plate is provided with a guide bar matching the guide groove, and the guide bar is inserted into the installation groove and moves.

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