Impact resistant push button switch

Abstract

The application provides an anti-impact button switch, which comprises a mounting assembly; an operating assembly and a switch assembly are respectively mounted on both ends of the mounting assembly through buckles and clamps; the moving contact is pressed on the push rod, and the moving contact is compressed by a compression spring; the compression sleeve in the switch has a guide structure, so that the anti-impact capacity of the switch is greatly improved; the operating part and the switch part are fixed through the buckles or the clamps which are easy to bleed, and are easy to disassemble; the internal elements of the operating part and the switch part are only in contact and have no fixed connection relationship, so that the operating part, the mounting seat and the switch part can be independently replaced as maintenance elements; in the process of switch failure, the failure part can be directly disassembled and replaced.

Description

Technical Field

[0001] This invention relates to an impact-resistant push button switch. Background Technology

[0002] Existing push-button switches are all one-piece structures, directly mounted on the mounting panel. When a malfunction occurs, the entire switch must be disassembled for repair. Furthermore, the moving contact inside the switch has poor impact resistance, limiting its application range. For example, a high-current industrial push-button switch disclosed in CN214123746U includes a switch button, a push rod, a moving contact, a compression spring, and two stationary contact feet extending through the base. Under pressure, the push rod pushes the moving contact downwards along the switch's axis, causing it to contact the stationary contact and close the switch. However, the moving contact is connected to the middle and both ends of the push rod by springs, preventing the moving contact from falling off. During the downward movement of the push rod, only the spring pressure applies force to the moving contact. When subjected to external impact, the moving contact will wobble, resulting in poor switch stability. Moreover, its installation method, being a single unit mounted on the mounting panel, necessitates complete disassembly and replacement or repair when the switch malfunctions, which is time-consuming and labor-intensive. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides an impact-resistant push button switch.

[0004] The present invention is achieved through the following technical solutions.

[0005] The present invention provides an impact-resistant push button switch, including a mounting assembly; an operating assembly and a switch assembly are respectively mounted on both ends of the mounting assembly via latches and snaps;

[0006] The switch assembly includes a moving contact and a stationary contact, with vertically opposite contacts mounted on the moving and stationary contacts respectively. The moving contact is mounted on a push rod, and the bottom of the push rod is supported at the center of the contact base by a lower return spring. The stationary contact is fixed to both ends of the contact base by terminals.

[0007] The operating components include a handle and a pressure sleeve. The top of the handle and the pressure sleeve are connected, the bottom of the pressure sleeve is fitted onto the pressure block, the center of the pressure block is connected to the push rod, and the pressure sleeve is installed inside the handle locking sleeve.

[0008] The mounting assembly includes an upper mounting base and a lower mounting base. The upper mounting base is fixed to the upper end of the lower mounting base. The top of the upper mounting base and the mounting nut fixed to the top of the push handle lock sleeve clamp the switch onto the mounting panel.

[0009] The top of the pressure sleeve is machined with a limiting step, and the middle is machined with a compression spring limiting platform. The outer end of the limiting step is machined with threads for installing the handle. The top of the handle locking sleeve is machined with an installation protrusion ring, and the middle is installed with a spring washer. The outer wall of the installation protrusion ring is machined with threads for installing the installation nut. An upper reset spring is sleeved on the pressure sleeve between the compression spring limiting platform and the spring washer.

[0010] The lower end of the pressure sleeve is machined with a guide hole, and the lower inner wall of the push handle lock sleeve is machined with a guide protrusion. The upper section of the guide protrusion is a slope, and the lower end face is a right angle. The guide protrusion extends into the guide hole.

[0011] A pressure ring is fixed to the lower end of the guide hole. The inner diameter of the pressure ring is smaller than the inner diameter of the guide hole. The guide hole is fitted into a groove machined in the middle of the outer wall of the pressure block. The outer side of the upper end face of the pressure ring contacts the lower end face of the guide protrusion. A tapered groove is machined in the center of the lower end face of the pressure block.

[0012] The top of the push rod is machined into a tapered shape, and a spring groove is machined at the upper end of the push rod. A compression spring is installed in the spring groove. The moving contact is installed at the lower end of the spring groove. The upper part and the bottom of the push rod are respectively installed in the circular through hole at the top and the circular groove at the bottom of the contact seat. A movable cavity is machined in the middle of the side wall of the contact seat, and the ends of the moving contact and the stationary contact are placed in the movable cavity.

[0013] The bottom of the contact holder is machined with opposing inclined walls, and the terminal block is fixed on the inclined wall and extends into the contact holder to connect with the stationary contact.

[0014] The bottom of the upper mounting base is machined with a mating groove, and the top of the lower mounting base is machined with a mating boss. The mating boss extends into the mating groove. The upper mounting base and the lower mounting base are fixed together by rivets. The top of the outer wall of the upper mounting base is also machined with a mounting platform. The mounting platform is machined with threaded holes and is fitted with adjusting screws.

[0015] The bottom of the mounting platform is sloped, and the adjusting screw is perpendicular to the bottom of the mounting platform.

[0016] The latch includes a latch and a latch groove. The latch is machined on the lower end of the outer wall of the pressure sleeve, and the latch groove is machined on the inner wall of the upper mounting base. The number and position of the latch and the latch groove are corresponding.

[0017] The buckle includes a snap-fit ​​ear and a snap-fit ​​groove. The snap-fit ​​ear is fixed to the lower end of the outer wall of the lower mounting base, and the snap-fit ​​groove is fixed to the top of the contact plate base. A square through hole is machined at the connection point between the snap-fit ​​ear and the lower mounting base. A trapezoidal groove is machined above the square through hole. The snap-fit ​​groove passes through the square through hole, and the clip at the top of the groove is engaged in the slot machined at the top of the snap-fit ​​ear.

[0018] The beneficial effects of this invention are as follows: by pressing the moving contact piece onto the push rod and using a compression spring to press it tightly, the pressure sleeves in the switch all have guiding structures, which greatly improves the shock resistance of the switch. Furthermore, the operating part and the switch part are both fixed by easy-to-access buckles or clips, making them easy to disassemble. The internal components of the operating part and the switch part are only in contact with each other and not in a fixed connection relationship. The operating part, the mounting base, and the switch part can be independently replaced as maintenance components. In the event of a switch failure, the faulty part can be directly disassembled and replaced. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the side snap-fit ​​structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the operating component structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the mounting base structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the switching assembly structure of the present invention;

[0024] In the diagram: 1-Button, 2-Pressure sleeve, 3-Mounting nut, 4-Button locking sleeve, 5-Mounting panel, 6-Upper mounting base, 7-Lower mounting base, 8-Pressure block, 9-Push rod, 10-Moving contact piece, 11-Stationary contact piece, 12-Contact piece seat, 13-Terminal, 14-Snap-fit ​​ear, 15-Trapezoidal groove, 16-Bottom post, 17-Snap-fit ​​groove, 18-Encoder disc, 19-Lower return spring, 20-Limit step, 21-Mounting protrusion ring, 22-Outer sealing gasket, 23 - Spring limiting platform, 24- Upper return spring, 25- Spring washer, 26- Guide hole, 27- Guide protrusion, 28- Pressure ring, 29- Conical groove, 30- Marker 1, 31- Buckle, 32- Adjusting screw, 33- Docking groove, 34- Docking boss, 35- Pressure plate, 36- Marker 2, 37- Buckle groove, 38- Limiting protrusion, 39- Mounting platform, 40- Rivet, 41- Plastic sealant, 42- Limiting groove, 43- Movable cavity, 44- Spring. Detailed Implementation

[0025] The technical solution of the present invention is further described below, but the scope of protection is not limited to what is described.

[0026] An impact-resistant push button switch includes a mounting assembly; an operating assembly and a switch assembly are respectively mounted on both ends of the mounting assembly via latches and snap-fits; the switch assembly and the operating assembly can be mounted or fixed on the mounting assembly via latches and snap-fits.

[0027] Furthermore, the switch assembly includes a moving contact 10 and a stationary contact 11. Vertically opposite contacts are installed on the moving contact 10 and the stationary contact 11 respectively. During the downward movement of the moving contact, the contacts on it and the contacts on the stationary contact make contact, thus turning on the switch. In order to ensure the stability of the moving contact when subjected to impact, the moving contact 10 is mounted on a push rod 9. The bottom of the push rod 9 is supported at the center of the contact base 12 by a lower return spring 19. After the push rod moves down, it compresses the return spring. When the external force is removed, the elastic force of the lower return spring causes the push rod to return to its original position. The stationary contact 11 is fixed to both ends of the contact base 12 by a terminal block 13.

[0028] Furthermore, in order to drive the push rod from the top of the switch, the operating assembly includes a handle 1 and a pressure sleeve 2. The top of the handle 1 and the pressure sleeve 2 are connected, and the bottom of the pressure sleeve 2 is fitted onto the pressure block 8. The center of the pressure block 8 is connected to the push rod 9. When the handle is subjected to external force, it pushes the pressure sleeve down so that the pressure block presses down the push rod. The pressure sleeve 2 is installed in the handle locking sleeve 4.

[0029] Furthermore, in order to ensure the strength of the switch housing, the mounting components include an upper mounting base 6 and a lower mounting base 7. The upper mounting base 6 is made of metal, and the lower mounting base 7 is made of plastic insulating material. The plastic material has a certain degree of flexibility and can deform to a certain extent when assembled with the push handle lock sleeve and contact plate seat, making the latch and snap-fit ​​installation more convenient. The upper mounting base 6 is fixed to the upper end of the lower mounting base 7.

[0030] Furthermore, in order to secure the push handle lock sleeve within the mounting base, the top of the upper mounting base 6 and the mounting nut 3 fixed to the top of the push handle lock sleeve 4 clamp the switch onto the mounting panel 5. The upper mounting base 6 is fixed to the mounting panel with screws. When the operating component is installed in the mounting base 6, by rotating the locking nut, since the lower end of the push handle lock sleeve is inside the mounting base, the locking nut and the mounting panel come into contact and generate a reverse thrust, causing the operating component and the mounting base to pull together.

[0031] Furthermore, to fix the stroke of the pressure sleeve, a limiting step 20 is machined on the top of the pressure sleeve 2, and a mounting protrusion 21 is machined on the top of the handle locking sleeve 4. The limiting step 20 is blocked by the mounting protrusion 21 during the downward movement of the pressure sleeve, thus limiting its downward stroke. The compression spring limiting platform 23 machined on the pressure sleeve and the spring washer 25 installed in the middle of the handle locking sleeve make indirect contact between the pressure sleeve and the handle locking sleeve. An upper return spring 24 is sleeved on the pressure sleeve 2 between the compression spring limiting platform 23 and the spring washer 25. After the pressure sleeve moves downward under the force of the handle, it compresses the upper return spring. After the external force is removed, the spring force can return the pressure sleeve to its original position. The outer end of the limiting step 20 is machined with threads for mounting the handle 1; the outer wall of the mounting protrusion 21 is machined with threads for mounting the mounting nut 3.

[0032] Furthermore, the lower end of the pressure sleeve 2 is machined with a guide hole 26, and the inner wall of the lower end of the push handle lock sleeve 4 is machined with a guide protrusion 27. The guide protrusion 27 extends into the guide hole 26. During the downward movement of the pressure sleeve, it is restricted by the guide protrusion and will not rotate. The upper section of the guide protrusion 27 is a slope, and the right angle surface of the lower end face contacts the upper end face of the pressure ring 28, thus restricting the stroke of the pressure sleeve during reset.

[0033] Furthermore, a pressure ring 28 is fixedly connected to the lower end of the guide hole 26. The inner diameter of the pressure ring 28 is smaller than the inner diameter of the guide hole 26. The guide hole 26 is fitted into the groove machined in the middle of the outer wall of the pressure block 8, so the upper end of the pressure ring can contact the upper end of the groove. When the pressure sleeve is reset, it drives the pressure block to reset. The outer side of the upper end face of the pressure ring 28 contacts the lower end face of the guide protrusion 27. When the pressure sleeve is pressed down, it can apply pressure to the pressure block to make it move down. A tapered groove 29 is machined in the center of the lower end face of the pressure block 8. The tapered groove 29 and the tapered fit of the top of the push rod 9 can prevent the push rod from coming out of the tapered groove.

[0034] Furthermore, a spring groove is machined on the upper end of the push rod 9, and a compression spring 44 is installed in the spring groove. The moving contact piece 10 is installed at the lower end of the spring groove. The compression spring 44 presses the moving contact piece onto the push rod. Under the elastic force of the compression spring, the moving contact piece will not shake when subjected to external impact. The upper part and the bottom of the push rod 9 are respectively installed in the circular through hole at the top and the circular groove at the bottom of the contact piece seat 12. The circular through hole and the circular groove at the bottom limit the shaking of the upper and lower parts of the push rod, ensuring accurate contact between the moving contact piece and the stationary contact piece. A movable cavity 43 is machined in the middle of the side wall of the contact piece seat 12 to provide space for the movement of the moving contact piece 10. The ends of the moving contact piece 10 and the stationary contact piece 11 are placed in the movable cavity 43.

[0035] Furthermore, the bottom of the contact base 12 is machined with a relative sloping wall, and the terminal block 13 is fixed on the sloping wall and extends into the contact base 12 to connect with the stationary contact 11, so that the terminal block is sloping towards the axis of the switch. In a confined space, this can provide some space for the installer's tools. In the bucket, the bottom of the mounting platform 39 is sloping, and the adjusting screw 32 is perpendicular to the bottom of the mounting platform 39.

[0036] Furthermore, to ensure the strength of the mounting base, the bottom of the upper mounting base 6 is machined with a mating groove 33, and the top of the lower mounting base 7 is machined with a mating boss 34. The mating boss 34 extends into the mating groove 33. The upper mounting base 6 and the lower mounting base 7 are fixed together by rivets 40. The top of the outer wall of the upper mounting base 6 is also machined with a mounting platform 39. The mounting platform 39 has threaded holes and is fitted with adjusting screws 32.

[0037] Furthermore, the latch includes a latch 31 and a latch groove 37. The latch 31 is machined on the lower end of the outer wall of the pressure sleeve 2, and the latch groove 37 is machined on the inner wall of the upper mounting base 6. The number and position of the latch 31 and the latch groove 37 are corresponding.

[0038] The buckle includes a snap-fit ​​ear 14 and a snap-fit ​​groove 17. The snap-fit ​​ear 14 is fixed to the lower end of the outer wall of the lower mounting base 7, and the snap-fit ​​groove 17 is fixed to the top of the contact plate base 12. A square through hole is machined at the connection point between the snap-fit ​​ear 14 and the lower mounting base 7. A trapezoidal groove 15 is machined above the square through hole. The snap-fit ​​groove 17 passes through the square through hole, and the clip at the top of the groove is engaged in the slot machined at the top of the snap-fit ​​ear 14.

[0039] During installation, the mounting base is first fixed on the control panel. Then, the push handle locking sleeve and the contact plate seat are respectively inserted into both ends of the mounting base. By pressing the mushroom-shaped push handle to lock it, the pressure sleeve is pushed to apply force to the push rod of the switch unit (the push rod drives the contact of the contact plate assembly to move downward and contact the contact of the conductive component assembly). This makes the switch unit achieve the closed state. When the external force is removed, under the action of the pressure spring in the operator and the pressure spring in the switch unit, the operator and the switch unit return to the initial state.

Claims

1. An impact-resistant push-button switch, comprising a mounting assembly, characterized in that: The two ends of the mounting assembly are respectively equipped with operating components and switch components via latches and clips; The switch assembly includes a moving contact (10) and a stationary contact (11). Vertically opposite contacts are installed on the moving contact (10) and the stationary contact (11). The moving contact (10) is mounted on a push rod (9). The bottom of the push rod (9) is supported at the center of the contact seat (12) by a lower return spring (19). The stationary contact (11) is fixed at both ends of the contact seat (12) by a terminal block (13). The operating components include a handle (1) and a pressure sleeve (2). The tops of the handle (1) and the pressure sleeve (2) are connected, and the bottom of the pressure sleeve (2) is fitted onto the pressure block (8). The center of the pressure block (8) is connected to the push rod (9), and the pressure sleeve (2) is installed inside the handle lock sleeve (4). The mounting assembly includes an upper mounting base (6) and a lower mounting base (7). The upper mounting base (6) is fixed to the upper end of the lower mounting base (7). The top of the upper mounting base (6) and the mounting nut (3) fixed to the top of the push handle lock sleeve (4) clamp the switch onto the mounting panel (5). The top of the pressure sleeve (2) is machined with a limiting step (20), and the middle is machined with a compression spring limiting platform (23). The outer end of the limiting step (20) is machined with a thread for installing the handle (1). The top of the handle lock sleeve (4) is machined with an installation protrusion ring (21), and the middle is machined with a spring pad (25). The outer wall of the installation protrusion ring (21) is machined with a thread for installing the installation nut (3). There is an upper return spring (24) between the compression spring limiting platform (23) and the spring pad (25) on the pressure sleeve (2). The lower end of the pressure sleeve (2) is machined with a guide hole (26), and the lower end of the handle lock sleeve (4) is machined with a guide protrusion (27). The upper section of the guide protrusion (27) is a slope, and the lower end surface is a right angle surface. The guide protrusion (27) extends into the guide hole (26). A pressure ring (28) is fixed to the lower end of the guide hole (26). The inner diameter of the pressure ring (28) is smaller than the inner diameter of the guide hole (26). The guide hole (26) is fitted into the groove machined in the middle of the outer wall of the pressure block (8). The outer side of the upper end face of the pressure ring (28) contacts the lower end face of the guide protrusion (27). A tapered groove (29) is machined in the center of the lower end face of the pressure block (8).

2. The shockproof push-button switch as described in claim 1, characterized in that: The top of the push rod (9) is machined into a cone shape, and a spring groove is machined at the upper end of the push rod (9). A compression spring (44) is installed in the spring groove. The moving contact piece (10) is installed at the lower end of the spring groove. The upper part and the bottom of the push rod (9) are respectively installed in the circular through hole at the top and the circular groove at the bottom of the contact piece seat (12). A movable cavity (43) is machined in the middle of the side wall of the contact piece seat (12). The ends of the moving contact piece (10) and the stationary contact piece (11) are placed in the movable cavity (43).

3. The shockproof push-button switch as described in claim 2, characterized in that: The bottom of the contact base (12) is machined with opposing inclined walls, and the terminal (13) is fixed on the inclined wall and extends into the contact base (12) to connect with the stationary contact (11).

4. The shockproof push-button switch as described in claim 1, characterized in that: The bottom of the upper mounting base (6) is machined with a mating groove (33), and the top of the lower mounting base (7) is machined with a mating boss (34). The mating boss (34) extends into the mating groove (33). The upper mounting base (6) and the lower mounting base (7) are fixed together by rivets (40). The top of the outer wall of the upper mounting base (6) is also machined with a mounting platform (39). The mounting platform (39) has threaded holes and is equipped with adjusting screws (32).

5. The shockproof push-button switch as described in claim 4, characterized in that: The bottom of the mounting platform (39) is sloped, and the adjusting screw (32) is perpendicular to the bottom of the mounting platform (39).

6. The shockproof push-button switch as described in claim 1, characterized in that: The latch includes a latch (31) and a latch groove (37). The latch (31) is machined on the lower end of the outer wall of the pressure sleeve (2), and the latch groove (37) is machined on the inner wall of the upper mounting base (6). The number and position of the latch (31) and the latch groove (37) are corresponding.

7. The shockproof push-button switch as described in claim 1, characterized in that: The buckle includes a snap-fit ​​ear (14) and a snap-fit ​​groove (17). The snap-fit ​​ear (14) is fixed to the lower end of the outer wall of the lower mounting base (7), and the snap-fit ​​groove (17) is fixed to the top of the contact plate base (12). A square through hole is machined at the connection point between the snap-fit ​​ear (14) and the lower mounting base (7). A trapezoidal groove (15) is machined above the square through hole. The snap-fit ​​groove (17) passes through the square through hole and its top clip is inserted into the slot machined at the top of the snap-fit ​​ear (14).

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