Handheld switch

Abstract

The utility model belongs to the technical field of switches, and particularly relates to a handheld switch. Comprising a shell and a micro-motion rod, a cavity is formed in the shell, an upper switch assembly and a lower switch assembly are arranged in the cavity, the micro-motion rod is arranged in the cavity through a double-thread screw, the lower end of the shell is connected with a lifting hook assembly through a middle shaft, the middle shaft is sleeved with a handle, the lower end of the double-thread screw extends out of the shell to be connected with the handle, and the handle is connected with the shell. The handle drives the double-thread screw to move upwards or downwards under the action of external force so as to drive the micro-motion rod to trigger the upper switch assembly and the lower switch assembly, and the double-thread screw is reset through the reset device. According to the utility model, the switch and the lifting hook assembly are integrated, so that the structure is more compact, and the interference of a suspended switch and a control wire in the prior art on field operation can be avoided.

Description

Technical field:

[0001] The utility model belongs to the technical field of switches, in particular to a handheld switch. Background technology:

[0002] In some light and small hanging occasions, such as: assembly of machine tools, assembly of engines, up and down transportation of wheel hubs, etc., a hanging device is required to facilitate the movement and transportation of parts with a certain weight. The existing hanging device includes a chain, a hook assembly is arranged at the lower end of the chain, and the upper end of the chain is connected to the winding device. The winding device is usually arranged at a high place. The drive of the winding device needs to be equipped with a separate handheld switch, which is led out by the control wire, and a switch is arranged at the end of the control wire. The control wire and the handheld switch will cause certain interference to the operation site. Summary of the invention:

[0003] The utility model aims to provide a handheld switch which has a compact structure and reduces interference to an operation site.

[0004] The utility model is achieved in this way:

[0005] A handheld switch comprises a shell and a micro-movement rod. The shell has a cavity inside, and an upper switch assembly and a lower switch assembly are arranged in the cavity. The micro-movement rod is arranged in the cavity through a double-headed screw. The lower end of the shell is connected to the hook assembly through an intermediate shaft. A handle is mounted on the intermediate shaft. The lower end of the double-headed screw extends out of the shell and is connected to the handle. Under the action of external force, the handle drives the double-headed screw to move upward or downward, thereby driving the micro-movement rod to trigger the upper switch assembly and the lower switch assembly. The double-headed screw is reset by a reset device.

[0006] In the above-mentioned handheld switch, a first window is provided on the shell, the upper switch assembly and the lower switch assembly are arranged on the switch seat, the switch seat is connected to the first electrical installation board through a fastener, the first electrical installation board is fixed on the shell to block the first window, and the upper switch assembly and the lower switch assembly are located in the cavity.

[0007] In the above-mentioned handheld switch, a second window is provided on the shell, the wiring terminal is connected to the second electrical installation board through a fastener, the second electrical installation board is fixed on the shell and blocks the second window, and the wiring terminal is located in the cavity.

[0008] In the above-mentioned handheld switch, a speed regulating switch and / or an emergency stop switch is arranged on the housing, the speed regulating switch is connected to the control system, and the emergency stop switch is connected to the control system.

[0009] In the above-mentioned handheld switch, the reset device includes a first reset spring and a second reset spring, and the handle includes a first inner hole, a second inner hole and a third inner hole. The aperture of the second inner hole is smaller than the apertures of the first inner hole and the third inner hole. A first step surface is formed between the first inner hole and the second inner hole, and a second step surface is formed between the second inner hole and the third inner hole. The first reset spring and the second reset spring are sleeved on the intermediate shaft, the upper end of the first reset spring is tightly pressed against the bottom surface of the shell, and the lower end is tightly pressed against the first step surface, and the upper end of the second reset spring is tightly pressed against the second step surface, and the lower end is tightly pressed against the hook shell.

[0010] In the above-mentioned handheld switch, the first return spring is pressed against the bottom surface of the housing through the first upper spring seat, and is pressed against the first step surface through the first lower spring seat; the second return spring is pressed against the second step surface through the second upper spring seat, and the lower end is pressed against the hook housing through the second lower spring seat.

[0011] In the above-mentioned handheld switch, an upper sleeve is arranged between the first lower spring seat and the first step surface, and a lower sleeve is arranged between the second upper spring seat and the second step surface.

[0012] In the above-mentioned handheld switch, the lower end of the housing is a cylinder, an upper corrugated sleeve is sleeved between the cylinder and the upper end of the handle, a first annular groove is provided on the outer wall of the cylinder and the outer wall of the upper end of the handle, and first annular convex edges are respectively provided at the upper and lower ends of the upper corrugated sleeve, and the first annular convex edges are arranged in the corresponding first annular grooves;

[0013] A lower corrugated sleeve is mounted between the lower end of the handle and the upper end of the hook assembly, a second annular groove is arranged on the outer wall of the lower end of the handle and the outer wall of the upper end of the hook assembly, and second annular ridges are respectively arranged at the upper and lower ends of the lower corrugated sleeve, and the second annular ridges are arranged in the corresponding second annular grooves.

[0014] In the above-mentioned handheld switch, the upper switch assembly includes an upper fast switch assembly and an upper slow switch assembly, and the lower switch assembly includes a lower fast switch assembly and a lower slow switch assembly. The upper fast switch assembly and the upper slow switch assembly and the lower fast switch assembly and the lower slow switch assembly are located on both sides of the micro-movement rod, and there is a height difference between the upper fast switch assembly and the upper slow switch assembly, and there is a height difference between the lower fast switch assembly and the lower slow switch assembly to realize the sequential triggering of the micro-movement rod.

[0015] In the above-mentioned handheld switch, a bearing is provided at one end of the micro-motion rod, and the bearing moves with the micro-motion rod to act on the upper switch assembly and the lower switch assembly respectively.

[0016] The outstanding advantages of the utility model compared with the prior art are:

[0017] 1. The utility model integrates the switch and the hook assembly to make the structure more compact, which can avoid the interference of the hanging switch and control wires in the prior art on the on-site operation;

[0018] 2. The handle of the utility model is labor-saving to operate and has good control effect. Description of the drawings:

[0019] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0020] Figure 2 It is the front view of the utility model;

[0021] Figure 3 yes Figure 2 AA section view;

[0022] Figure 4 yes Figure 3 A partial enlarged schematic diagram of

[0023] Figure 5 It is a top view of the utility model;

[0024] Figure 6 yes Figure 5 BB cross-sectional view;

[0025] Figure 7 yes Figure 6 A partial enlarged schematic diagram of

[0026] Figure 8 It is a schematic diagram of the utility model provided with control wires;

[0027] Fig. 9 It is a schematic diagram of the housing of the utility model.

[0028] In the figure: 1. housing; 2. micro-movement rod; 3. cavity; 4. double-headed screw; 5. hook assembly; 6. intermediate shaft; 7. handle; 8. hook housing; 9. hook; 10. chain; 11. switch seat; 12. first electrical installation board; 13. terminal; 14. second electrical installation board; 15. emergency stop switch; 16. speed control switch; 17. aviation plug; 18. first return spring; 19. second return spring; 20. first inner hole; 21. third inner hole; 22. first upper spring seat; 23. first lower spring seat; 24. second upper spring seat; 25. second lower spring seat; 26. upper sleeve; 27. lower sleeve; 28. upper corrugated sleeve; 29. ​​lower corrugated sleeve; 30. upper fast gear switch assembly; 31. upper slow gear switch assembly; 32. lower slow gear switch assembly; 33. lower fast gear switch assembly; 34. bearing; 35. control wire. Specific implementation method:

[0029] The present invention is further described below with reference to specific embodiments. Figure 1 —9:

[0030] The utility model provides a handheld switch, which includes a housing 1 and a micro-rod 2. The housing 1 has a cavity 3, and an upper switch assembly and a lower switch assembly are arranged in the cavity 3. In this embodiment, an upper micro-switch and a lower micro-switch are preferably used. The micro-rod 2 is arranged in the cavity 3 through a double-headed screw 4. The lower end of the housing 1 is connected to a hook assembly 5 through an intermediate shaft 6. A handle 7 is mounted on the intermediate shaft 6. The lower end of the double-headed screw 4 extends out of the housing 1 and is connected to the handle 7. Under the action of an external force, the handle 7 drives the double-headed screw 4 to move upward or downward, thereby driving the micro-rod 2 to trigger the upper switch assembly and the lower switch assembly, thereby realizing the upward or downward movement of the hook assembly. The double-headed screw 4 is reset by a reset device. Among them, the hook assembly 5 includes a hook housing 8 and a hook 9. The lower end of the intermediate shaft 6 is T-shaped, and a T-shaped hole is arranged on the hook housing 8. The lower end of the intermediate shaft 6 is arranged in the T-shaped hole.

[0031] The upper end of the housing 1 is connected to a chain 10, which is driven by the winding device to wind up the hook assembly 5, or to release the chain 10 to move the hook assembly 5 downward. The action of the winding device is controlled by the upper switch assembly and the lower switch assembly. When the micro-moving rod 2 triggers the upper switch assembly, the control system controls the motor of the winding device to rotate the winding chain 8, and when the micro-moving rod 2 triggers the lower switch assembly, the control system controls the motor of the winding device to rotate in the opposite direction to release the chain 8.

[0032] The utility model integrates the switch on the hanging device, thus the existing switch can be eliminated, making the site more concise and convenient for operation.

[0033] As described above, the lower end of the double-headed screw rod 4 is screwed to the handle 7, and the upper end extends into the inner cavity 3 of the housing 1. The micro-movement rod 2 is provided with a through hole, and the upper end of the double-headed screw rod 4 passes through the through hole and is limited in the upper and lower directions by the limiting member. The limiting member in this embodiment is a nut and a stepped surface located on the double-headed screw rod 4.

[0034] In the present utility model, the specific installation structure of the upper switch assembly and the lower switch assembly is as follows: the housing 1 is provided with a first window, the upper switch assembly and the lower switch assembly are arranged on a switch seat 11, the switch seat 11 is connected to a first electrical installation board 12 through a fastener, the first electrical installation board 12 is fixed on the housing 1 to block the first window, and the upper switch assembly and the lower switch assembly are located in the cavity 3. This structure is convenient for disassembly, assembly and replacement.

[0035] Furthermore, the housing 1 is provided with a second window, the connection terminal 13 is connected to the second electrical installation board 14 through a fastener, the second electrical installation board 14 is fixed to the housing 1 and blocks the second window, and the connection terminal 13 is located in the cavity 3. This structure is also convenient for the disassembly, assembly and replacement of the connection terminal 13.

[0036] In order to improve safety, the utility model is provided with an emergency stop switch 15 on the housing 1, and the emergency stop switch 15 is connected to the control system. In some critical situations, the winding device can be stopped by pressing the emergency stop switch 15.

[0037] When hoisting different products, different lifting and lowering speeds can be selected. Therefore, the utility model also provides a speed regulating switch 16 on the housing 1. The speed regulating switch 16 is connected to the control system, and the speed regulation is fast and convenient.

[0038] In addition, the housing 1 is also provided with an aviation plug 17. The electrical components (such as the upper switch assembly, the lower switch assembly, the emergency stop switch 15, the terminal block 13, and the speed regulating switch 16) in the cavity 3 are connected through the aviation plug 17, so that the circuit in the cavity 3 is kept clean and easy to maintain. The aviation plug 17 is connected to the control wire 35, which is spirally arranged to form a cylindrical structure and is sheathed outside the chain 10.

[0039] Specifically, the reset device includes a first reset spring 18 and a second reset spring 19, and the handle 7 includes a first inner hole 20, a second inner hole and a third inner hole 21. The aperture of the second inner hole is smaller than the apertures of the first inner hole 20 and the third inner hole 21. A first step surface is formed between the first inner hole 20 and the second inner hole, and a second step surface is formed between the second inner hole and the third inner hole 21. The first reset spring 18 and the second reset spring 19 are mounted on the intermediate shaft 6. The upper end of the first reset spring 18 is pressed against the bottom surface of the shell 1, and the lower end is pressed against the first step surface. The upper end of the second reset spring 19 is pressed against the second step surface, and the lower end is pressed against the hook shell 8.

[0040] In order to improve the stability of the first return spring 18 and the second return spring 19, the first return spring 18 is pressed against the bottom surface of the housing 1 through the first upper spring seat 22, and is pressed against the first step surface through the first lower spring seat 23; the second return spring 19 is pressed against the second step surface through the second upper spring seat 24, and the lower end is pressed against the hook housing 8 through the second lower spring seat 25.

[0041] In the present invention, an upper sleeve 26 is arranged between the first lower spring seat 22 and the first step surface, and a lower sleeve 27 is arranged between the second upper spring seat 24 and the second step surface. The upper sleeve 26 and the lower sleeve 27 can reduce the friction force of the intermediate shaft 6 moving up and down and improve the sensitivity.

[0042] Of course, the reset device can also be arranged on the double-headed screw 4. Specifically, a reset spring is sleeved on the double-headed screw 4, one end of the reset spring is pressed tightly against the micro-movement rod 2, and the other end is pressed tightly against the bottom surface of the inner cavity of the housing 1.

[0043] In order to prevent some particles in the workshop environment from entering between the handle 7 and the intermediate shaft 6, the lower end of the housing 1 is a cylinder, and an upper corrugated sleeve 28 is installed between the cylinder and the upper end of the handle 7. The outer wall of the cylinder and the outer wall of the upper end of the handle 7 are both provided with a first annular groove, and the upper and lower ends of the upper corrugated sleeve 28 are respectively provided with first annular convex edges, and the first annular convex edges are arranged in the corresponding first annular grooves;

[0044] A lower corrugated sleeve 29 is mounted between the lower end of the handle 7 and the upper end of the hook housing 8. A second annular groove is provided on the outer wall of the lower end of the handle 7 and the outer wall of the upper end of the hook housing 8. Second annular convex edges are respectively provided at the upper and lower ends of the lower corrugated sleeve 29, and the second annular convex edges are arranged in the corresponding second annular grooves.

[0045] It should be noted that the utility model can also realize the switching between fast gear and slow gear. Specifically, the upper switch assembly includes an upper fast gear switch assembly 30 and an upper slow gear switch assembly 31, and the lower switch assembly includes a lower fast gear switch assembly 33 and a lower slow gear switch assembly 32. The upper fast gear switch assembly 30 and the upper slow gear switch assembly 31 as well as the lower fast gear switch assembly 33 and the lower slow gear switch assembly 32 are located on both sides of one end of the micro-motion rod 2, and there is a height difference between the upper fast gear switch assembly 30 and the upper slow gear switch assembly 31, and there is a height difference between the lower fast gear switch assembly 33 and the lower slow gear switch assembly 32 to realize the sequential triggering of the micro-motion rod 2.

[0046] For example, the upper fast gear switch assembly 30 is slightly higher than the upper slow gear switch assembly 31. When the micro-movement rod 2 moves upward, it first acts on the upper slow gear switch assembly 31. At this time, the motor of the winding device rotates slowly. When fast rotation is required, continue to push the handle 7 to move upward.

[0047] Similarly, the lower slow gear switch assembly 32 is slightly higher than the lower fast gear switch assembly 33, and it first descends slowly, and then a relatively fast speed can be obtained by continuously pushing the handle 7 downward.

[0048] The utility model also has a bearing 34 at one end of the micro-movement rod 2, and the bearing 34 acts on the upper switch assembly and the lower switch assembly respectively as the micro-movement rod 2 moves, which can reduce friction and improve the sensitivity of the switch. The upper switch assembly and the lower switch assembly are also provided with guide grooves, and the bearing 34 rolls along the guide grooves to prevent shaking.

[0049] When in use, hang the object on the hook 9. When the object needs to be lifted upward, the operator holds the handle 7 and gently moves it upward. At this time, the micro-rod 2 triggers the upper switch assembly, and the upper switch assembly sends a signal to the control system, which controls the winding device to wind the chain 10. When it moves up to the required position, release the handle 7, the handle 7, the double-headed screw 4, and the micro-rod 2 are reset, the upper switch assembly is disconnected, and a signal is sent to the control system, which controls the winding device to stop.

[0050] When it is necessary to move the object downward, the operator holds the handle 7 again and moves it downward gently. At this time, the micro-motion rod 2 triggers the lower switch assembly, and the lower switch assembly sends a signal to the control system, which controls the winding device to rotate in the opposite direction to lower the wound chain 10 until it drops to the required height. The handle 7 is released, the handle 7, the double-headed screw 4, and the micro-motion rod 2 are reset, the lower switch assembly is disconnected, and a signal is sent to the control system, which controls the winding device to stop.

[0051] The above embodiment is only one of the preferred embodiments of the present utility model, and is not intended to limit the scope of implementation of the present utility model. Therefore, any equivalent changes made based on the shape, structure, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A handheld switch, characterized in that: The invention comprises a housing (1) and a micro-movement rod (2). The housing (1) has a cavity (3) in it. An upper switch assembly and a lower switch assembly are arranged in the cavity (3). The micro-movement rod (2) is arranged in the cavity (3) via a double-headed screw (4). The lower end of the housing (1) is connected to a hook assembly (5) via an intermediate shaft (6). A handle (7) is mounted on the intermediate shaft (6). The lower end of the double-headed screw (4) extends out of the housing (1) and is connected to the handle (7). Under the action of an external force, the handle (7) drives the double-headed screw (4) to move upward or downward, thereby driving the micro-movement rod (2) to trigger the upper switch assembly and the lower switch assembly. The double-headed screw (4) is reset by a reset device.

2. A handheld switch according to claim 1, characterized in that: The housing (1) is provided with a first window, the upper switch assembly and the lower switch assembly are arranged on a switch seat (11), the switch seat (11) is connected to a first electrical installation board (12) via a fastener, the first electrical installation board (12) is fixed on the housing (1) to block the first window, and the upper switch assembly and the lower switch assembly are located in the cavity (3).

3. A handheld switch according to claim 1, characterized in that: The housing (1) is provided with a second window, the connection terminal (13) is connected to a second electrical installation board (14) via a fastener, the second electrical installation board (14) is fixed on the housing (1) and blocks the second window, and the connection terminal (13) is located in the cavity (3).

4. A handheld switch according to claim 1, characterized in that: The housing (1) is provided with a speed regulating switch (16) and / or an emergency stop switch (15); the speed regulating switch (16) is connected to a control system, and the emergency stop switch (15) is connected to a control system.

5. A handheld switch according to any one of claims 1 to 4, characterized in that: The reset device comprises a first reset spring (18) and a second reset spring (19); the handle (7) comprises a first inner hole (20), a second inner hole and a third inner hole (21); the aperture of the second inner hole is smaller than the apertures of the first inner hole (20) and the third inner hole (21); a first step surface is formed between the first inner hole (20) and the second inner hole, and a second step surface is formed between the second inner hole and the third inner hole (21); the first reset spring (18) and the second reset spring (19) are sleeved on the intermediate shaft (6); the upper end of the first reset spring (18) is pressed against the bottom surface of the shell (1) and the lower end is pressed against the first step surface; the upper end of the second reset spring (19) is pressed against the second step surface and the lower end is pressed against the hook shell (1).

6. A handheld switch according to claim 5, characterized in that: The first return spring (18) is pressed against the bottom surface of the housing (1) through a first upper spring seat (22), and is pressed against the first step surface through a first lower spring seat (23); the second return spring (19) is pressed against the second step surface through a second upper spring seat (24), and the lower end is pressed against the hook housing (1) through a second lower spring seat (25).

7. A handheld switch according to claim 6, characterized in that: An upper sleeve (26) is arranged between the first lower spring seat (23) and the first step surface, and a lower sleeve (27) is arranged between the second upper spring seat (24) and the second step surface.

8. A handheld switch according to claim 1, characterized in that: The lower end of the housing (1) is a cylinder, an upper corrugated sleeve (28) is sleeved between the cylinder and the upper end of the handle (7), a first annular groove is provided on the outer wall of the cylinder and the outer wall of the upper end of the handle (7), and first annular convex edges are respectively provided at the upper and lower ends of the upper corrugated sleeve (28), and the first annular convex edges are arranged in the corresponding first annular grooves; A lower corrugated sleeve (29) is sleeved between the lower end of the handle (7) and the upper end of the hook assembly (5); a second annular groove is provided on the outer wall of the lower end of the handle (7) and the outer wall of the upper end of the hook assembly (5); and second annular convex edges are respectively provided at the upper and lower ends of the lower corrugated sleeve (29), and the second annular convex edges are arranged in the corresponding second annular grooves.

9. A handheld switch according to claim 1, characterized in that: The upper switch assembly comprises an upper fast-shift switch assembly (30) and an upper slow-shift switch assembly (31); the lower switch assembly comprises a lower fast-shift switch assembly (33) and a lower slow-shift switch assembly (32); the upper fast-shift switch assembly (30) and the upper slow-shift switch assembly (31) as well as the lower fast-shift switch assembly (33) and the lower slow-shift switch assembly (32) are located on both sides of the micro-motion rod (2); there is a height difference between the upper fast-shift switch assembly (30) and the upper slow-shift switch assembly (31); and there is a height difference between the lower fast-shift switch assembly (33) and the lower slow-shift switch assembly (32) to achieve sequential triggering of the micro-motion rod (2).

10. A handheld switch according to claim 1 or 9, characterized in that: A bearing (34) is provided at one end of the micro-motion rod (2), and the bearing (34) moves with the micro-motion rod (2) to act on the upper switch assembly and the lower switch assembly respectively.

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