A toggle switch group lock assembly with positioning device

Abstract

The present invention discloses a toggle switch group lock head assembly with a positioning device, comprising a lock head, a lock core and a key matched with the lock core, the lock core is arranged inside the lock head, and a handle, a lock fork and a mounting seat are sequentially sleeved on the outside of the lock head from top to bottom, the handle and the lock fork are connected to the lock head through axial serrations, a retractable lock tongue is arranged at the bottom of the lock core, a lock tongue groove matched with the lock tongue is provided on the lock head and the mounting seat, a positioning hole is arranged inside the mounting seat, a positioning steel ball, a spring A and a set screw C are arranged in the positioning hole from inside to outside, and a positioning groove matched with the positioning steel ball is provided on the outside of the lock head. The toggle switch group lock head assembly of the present invention is composed of a lock head, a lock core, a lock tongue, a key, a handle, a lock fork and a mounting seat, and has a simple structure. The lock tongue is driven to retract and retract by twisting the key, thereby changing the state of the lock head assembly, realizing the control of the toggle switch group, and improving the reliability of the lock switch action.

Description

Technical Field

[0001] The invention belongs to the technical field of locomotive components and relates to a toggle switch group lock assembly with a positioning device. Background Art

[0002] A locomotive is a self-propelled vehicle that pulls or pushes railway vehicles and does not carry any business load. It is commonly known as a locomotive. Locomotives are generally driven directly or through a transmission device by power machinery such as steam engines, diesel engines, gas turbines, and traction motors.

[0003] The toggle switch group is the main controller used by the railway locomotive driver to operate the locomotive. It is an electrical device that indirectly controls the main circuit through the low-voltage electrical appliances of the control circuit. The toggle switch group of the railway electric locomotive is equipped with an electric key unit, which mainly controls the power on and off of the electrical appliances on the control panel of the electric locomotive. The electric key unit is equipped with a lock assembly.

[0004] At present, the lock assembly on the toggle switch group has a complex structure. Turning the key allows the lock core to rotate, and then turning the lock core handle, the lock core handle drives the lock, the lock core drives the handle shaft, the gear on the handle shaft drives the camshaft, the camshaft drives the cam, the cam drives the slider assembly, the slider assembly drives the auxiliary contact to move, and too many transmission links reduce the reliability of the lock switch action. In addition, the locomotive vibrates greatly during operation, and the lock core is easily disengaged due to misoperation during use, causing frequent failure of the lock switch, resulting in unstable output signals, which brings great hidden dangers to the safe operation of the locomotive. Summary of the invention

[0005] The purpose of the present invention is to provide a toggle switch group lock head assembly with a positioning device, which solves the problem that the existing toggle switch group lock head assembly has a complex structure and causes low reliability of the lock switch action.

[0006] The technical solution adopted by the present invention is a toggle switch group lock assembly with a positioning device, including a lock head, a lock core and a key matching the lock core, the lock core is arranged inside the lock head, and the outside of the lock head is sequentially sleeved with a handle, a lock fork and a mounting seat from top to bottom, the handle and the lock fork are connected to the lock head through axial serrations, a retractable lock tongue is arranged at the bottom of the lock core, and a lock tongue groove matching the lock tongue is opened on the lock head and the mounting seat; a positioning hole is arranged inside the mounting seat, and a positioning steel ball, a spring A and a set screw C are arranged in the positioning hole from the inside to the outside, and a positioning groove matching the positioning steel ball is opened on the outside of the lock head.

[0007] The beneficial effects of the present invention are also that:

[0008] A circumferential groove a is provided on the outer surface of the bottom end of the lock head, an annular gasket and a retaining spring are embedded in the circumferential groove a, and a lock head fixing hole matching with the gasket and the retaining spring is provided at the bottom of the mounting seat.

[0009] A limit platform for limiting the downward movement of the handle is arranged on the outer side of the lock head, and a groove b cooperating with the limit platform is opened on the inner wall of the handle.

[0010] A marble hole is provided inside the lock head, and a marble B, a spring B and a screw D are arranged in the marble hole from the inside to the outside in sequence. A guide hole communicating with the marble hole 15 is provided inside the lock core, and the diameter of the guide hole is the same as that of the marble hole. A marble A is arranged in the guide hole, and a groove c is provided on one side of the key for the end of the marble A to be embedded.

[0011] A protruding eccentric circular shaft is arranged at the bottom of the lock core, and a groove d matching with the eccentric circular shaft is arranged on the lock tongue.

[0012] One telescopic end of the lock tongue is in a boss shape, and the other end is in an arc shape.

[0013] One end of the handle is a hand-held end, and the end opposite to the hand-held end is provided with a pointer.

[0014] A nylon mounting block is provided between the handheld end and the lock head, and the handle and the nylon mounting block are fixedly connected by screws B.

[0015] The lock fork is connected to the lock head by a screw A, and a limit groove which is engaged with the mechanical lock of the toggle switch group is arranged on one side of the lock fork.

[0016] The beneficial effects of the present invention are as follows:

[0017] (1) The toggle switch group lock assembly is composed of a lock head, a lock cylinder, a lock tongue, a key, a handle, a lock fork and a mounting seat, which has a simple structure and is easy to manufacture;

[0018] (2) By twisting the key to drive the lock tongue to extend and retract, and then changing the state of the lock head assembly, the key switch group can be controlled, thereby improving the reliability of the lock switch action;

[0019] (3) A positioning device is provided in the lock assembly, including a positioning hole, a positioning groove, a positioning steel ball, a spring A and a set screw C. The friction between the lock core and the lock is overcome by the damping force of the positioning steel ball on the lock, so that the lock tongue is quickly inserted into the lock tongue groove A, thereby improving the working efficiency of the lock assembly;

[0020] (4) A marble hole is provided inside the lock head, a marble B, a spring B and a screw D are provided in the marble hole from the inside to the outside in sequence, a guide hole connected to the marble hole is provided in the lock core, and a marble A is provided in the guide hole. The key can be pulled out only when the marble hole is aligned with the guide hole, otherwise the key cannot be pulled out. This makes it easy for the operator to identify the working state of the toggle switch group according to whether the key can be pulled out, thereby greatly reducing the misoperation of the toggle switch group, ensuring the safety of the operation of the toggle switch group, and improving the safety of the locomotive. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the lock head assembly of the toggle switch group of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the lock head assembly of the toggle switch assembly of the present invention;

[0023] Figure 3 It is a schematic diagram of the top view of the lock head assembly of the toggle switch group of the present invention;

[0024] Figure 4 yes Figure 1 AA segmentation diagram of ;

[0025] Figure 5 It is a schematic diagram of the top view of the lock core and the lock head in the lock head assembly of the toggle switch group of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the lock head assembly of the toggle switch assembly of the present invention in an unlocked state;

[0027] Figure 7 It is a structural schematic diagram of the lock head assembly of the toggle switch group of the present invention in a locked state.

[0028] In the figure, 1. key, 2. lock head, 3. handle, 4. screw A, 5. mounting seat, 6. gasket, 7. retaining ring, 8. lock fork, 9. rubber mounting block, 10. screw B, 11. set screw C, 12. spring A, 13. positioning steel ball, 15. marble hole, 16. marble A, 17. marble B, 18. spring B, 19. screw D, 20. lock core, 21. positioning groove, 22. serration A, 23. serration B, 25. lock tongue, 27. mechanical lock, 28. eccentric circular shaft, 31. limit platform, 32. pointer, 33. handheld end, 51. lock tongue groove A, 52. positioning hole, 53. lock tongue groove B, 54. lock head fixing hole, 81. limit groove. DETAILED DESCRIPTION

[0029] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] The present invention discloses a key switch group lock head assembly with a positioning device, referring to Figure 1 and Figure 2, including a cylindrical lock head 2, a cylindrical lock core 20 and a key 1 matched with the lock core 20, the lock core 20 is embedded in the lock head 2, and the lock head 2 is sequentially sleeved with a handle 3, a lock fork 8 and a mounting seat 5 from top to bottom on the outside, the handle 3 and the lock fork 8 are connected to the lock head 2 through an axial serration, a serration A22 is arranged on the side of the lock head 2 opposite to the handle 3, a serration C meshing with the serration A22 is arranged on the inner wall of the handle 3, a serration B23 is arranged on the side of the lock head 2 opposite to the lock fork 8, and a serration D meshing with the serration B23 is arranged on the inner wall of the lock fork 8, the handle 3 is turned, the handle 3 can drive the lock head 2 to rotate, and the lock head 2 drives the lock fork 8 to rotate (see Figure 3 ).

[0031] Reference Figure 4 The bottom of the lock core 20 is provided with a retractable lock tongue 25, and the lock head 2 is provided with two axially symmetrical lock tongue grooves A51 matching with the lock tongue 25. The inner wall of the mounting seat 5 is circumferentially provided with six lock tongue grooves B53 matching with the lock tongue 25, wherein the angle between five adjacent lock tongue grooves B is 45°, and the angle between another lock tongue groove B and its adjacent lock tongue groove B is 90°. When the key drives the lock tongue to rotate, the lock tongue can only extend out of the lock tongue groove A and enter the lock tongue groove B when the eccentric circular shaft 28 is closest to the lock tongue groove A. The five lock tongue grooves B cooperate with the lock tongue to achieve the diversity of the rotation angle and direction of the lock head.

[0032] A circumferential groove a is provided on the outer side surface of the bottom end of the lock head 2, and an annular gasket 6 and a retaining spring 7 are embedded in the circumferential groove a. A lock head fixing hole 54 matching with the gasket 6 and the retaining spring 7 is provided at the bottom of the mounting seat 5.

[0033] Reference Figure 5 The mounting seat 5 is provided with a positioning hole 52 inside, and a positioning steel ball 13, a spring A12 and a set screw C11 are provided in the positioning hole 52 from inside to outside. The position of the positioning steel ball in the positioning hole can be adjusted by the set screw C11; a circular positioning groove 21 matching with the positioning steel ball 13 is provided on the outside of the lock head 2. Before the positioning steel ball 13 enters the positioning groove 21, the spring A12 is in a compressed state.

[0034] If the positioning hole 52 and the positioning groove 21 are not provided in the lock head assembly, before the lock tongue enters the lock tongue groove A51, when the key 1 is twisted, the key 1 will drive the lock core 20 to rotate, and the lock head 2 will rotate in the same direction as the lock core 20 under the action of the friction force of the lock core 20, making it difficult for the lock tongue 25 to enter the lock tongue groove A.

[0035] The lock assembly of the present invention is provided with a positioning hole 52 and a positioning groove 21. When the lock 2 is installed in the mounting seat 5, the positioning hole 52 and the positioning groove 21 are aligned according to their relative positions, and the positioning steel ball 13 enters the positioning groove 21 under the elastic force of the spring A12, thereby preventing the relative rotation between the lock and the mounting seat; before the lock tongue 25 enters the lock tongue groove A51, when the key 1 is twisted, the key 1 drives the lock core 20 to rotate. In this state, the friction force between the lock 2 and the lock core 20 is less than the damping force of the positioning steel ball 13 on the lock 2, so that the lock 2 does not rotate with the lock core 20, thereby facilitating the rapid insertion of the lock tongue 25 into the lock tongue groove A.

[0036] A limit platform 31 for limiting the downward movement of the handle 3 is arranged on the outer side of the lock head 2 , and a groove b cooperating with the limit platform 31 is opened on the inner wall of the handle 3 .

[0037] A marble hole 15 is provided inside the lock head 2, and a columnar marble B17, a spring B18 and a screw D19 are provided in the marble hole 15 from the inside to the outside. A guide hole communicating with the marble hole 15 is provided inside the lock core 20, and the diameter of the guide hole is the same as the diameter of the marble hole. A columnar marble A16 is provided in the guide hole, and both end faces of the marble A16 are spherical. One end face of the marble B17 connected to the spring is flat, and the other end face is spherical. The diameter of the marble A16 is the same as the diameter of the marble B17. A groove c is provided on the key 1 for the end of the marble A16 to be embedded.

[0038] A protruding eccentric circular shaft 28 is provided at the bottom of the lock core 20 , and a groove d matching with the eccentric circular shaft 28 is formed on the lock tongue 25 .

[0039] One retractable end of the locking tongue 25 is in the shape of a boss, and the other end is in the shape of an arc.

[0040] One end of the handle 3 is a hand-held end 33 , and the end opposite to the hand-held end 33 is provided with a pointer 32 .

[0041] A nylon mounting block 9 is provided between the hand-held end 33 and the lock head 2 , and the handle 3 and the nylon mounting block 9 are fixedly connected by screws B10 .

[0042] The lock fork 8 is connected to the lock head 2 by a screw A4. A limit groove 81 is provided on one side of the lock fork 8. The limit groove 81 of the lock fork 8 is engaged with the mechanical lock 27 of the toggle switch group. The rotation of the lock fork 8 can drive the mechanical lock 27 to move, thereby unlocking the toggle switch handle on the toggle switch group.

[0043] The working principle of the toggle switch assembly lock head assembly of the present invention is that when it is necessary to start the toggle switch assembly, the key 1 is inserted into the lock core 20 and twisted clockwise by 90°. The key drives the lock core to rotate, and the lock core drives the eccentric circular shaft 28 away from the lock tongue groove B, so that the lock tongue exits the lock tongue groove B, and the rotation of the lock head is not restricted by the mounting seat; then the handle is rotated counterclockwise by 45°, and the handle drives the lock fork to rotate, and the lock fork drives the mechanical lock of the toggle switch assembly, so that the mechanical lock can move left and right along the mounting plate of the toggle switch assembly, thereby unlocking the toggle switch handle on the toggle switch assembly, so that the toggle switch handle can be pulled, that is, the toggle switch assembly is unlocked. In the process of twisting the key and the handle, the lock core and the lock head rotate, so that the guide hole of the lock core and the marble hole 15 of the lock head are misaligned. Therefore, when the toggle switch assembly is in the unlocked state, when the key is pulled out, the marble A16 cannot retreat into the marble hole 15, and the end of the marble A16 is still embedded in the groove c of the key. The marble A16 restricts the upward movement of the key, so that the key cannot be pulled out (see Figure 6 ).

[0044] After the locomotive is parked and the toggle switch assembly is no longer needed, the handle 3 is turned 45° clockwise, the handle 3 drives the lock head to rotate clockwise, the lock head drives the marble hole 15 inside it to rotate clockwise, and then the key is turned 90° counterclockwise, the key drives the lock core to rotate, the lock core drives the eccentric circular shaft 28 to rotate, the eccentric circular shaft 28 gradually approaches the lock tongue groove A and the lock tongue groove B, and finally the eccentric circular shaft 28 drives the lock tongue to insert into the lock tongue groove A and the lock tongue groove B, the lock tongue limits the relative rotation between the lock head and the mounting seat, and then limits the rotation of the handle and the lock fork 8, so that the toggle switch assembly can no longer be started. At this time, the key returns to the initial insertion position, and the marble hole 15 inside the lock head is aligned with the guide hole of the lock core. When the key is pulled upward, the marble A16 is pushed by the key, pressing the marble B17 inward, thereby compressing the spring, and the marble A16 partially retreats into the marble hole 15, so that the end of the marble A16 leaves the groove c of the key, and the key can be pulled out smoothly (see Figure 7 ).

[0045] The toggle switch assembly lock head assembly of the present invention is used to facilitate operators to identify the working state of the toggle switch assembly according to whether the key can be pulled out, which greatly reduces misoperation of the toggle switch assembly and ensures safe operation of the toggle switch assembly.

Claims

1. A toggle switch assembly with a positioning device, characterized in that: The invention comprises a lock head (2), a lock core (20) and a key (1) matched with the lock core (20); the lock core (20) is arranged inside the lock head (2); a handle (3), a lock fork (8) and a mounting seat (5) are sequentially sleeved on the outside of the lock head (2) from top to bottom; the handle (3) and the lock fork (8) are connected to the lock head (2) through axial sawtooth patterns; a retractable lock tongue (25) is arranged at the bottom of the lock core (20); the lock head (2) and the mounting seat (5) are both provided with a lock tongue groove matched with the lock tongue (25); a positioning hole (52) is arranged inside the mounting seat (5); a positioning steel ball (13), a spring A (12) and a set screw C (11) are arranged in the positioning hole (52) from inside to outside; a positioning groove (21) matched with the positioning steel ball (13) is arranged on the outside of the lock head (2); The lock head (2) is provided with a ball hole (15) inside, and a ball B (17), a spring B (18) and a screw D (19) are arranged in sequence from the inside to the outside in the ball hole (15); a guide hole communicating with the ball hole 15 is provided inside the lock core (20); the guide hole has the same diameter as the ball hole (15); a ball A (16) is arranged in the guide hole; a groove C is provided on one side of the key (1) for the end of the ball A (16) to be embedded; the lock fork (8) is connected to the lock head (2) by means of a screw A (4); a limit groove (81) is provided on one side of the lock fork (8) for engaging with a mechanical lock (27) of a toggle switch group.

2. A toggle switch assembly with a positioning device according to claim 1, characterized in that: A circumferential groove a is provided on the outer surface of the bottom end of the lock head (2), and an annular gasket (6) and a retaining spring (7) are embedded in the circumferential groove a. A lock head fixing hole (54) matching with the gasket (6) and the retaining spring (7) is provided at the bottom of the mounting seat (5).

3. A toggle switch assembly with a positioning device according to claim 1, characterized in that: A limiting platform (31) for limiting the downward movement of the handle (3) is arranged on the outer side of the lock head (2), and a groove b cooperating with the limiting platform (31) is opened on the inner wall of the handle (3).

4. A toggle switch assembly with a positioning device according to claim 1, characterized in that: The bottom of the lock core (20) is provided with a protruding eccentric circular shaft (28), and the lock tongue (25) is provided with a groove d that matches the eccentric circular shaft (28).

5. The toggle switch assembly with a positioning device according to claim 1, characterized in that: One telescopic end of the locking tongue (25) is in the shape of a boss, and the other end is in the shape of an arc.

6. A toggle switch assembly with a positioning device according to claim 1, characterized in that: One end of the handle (3) is a hand-held end (33), and the end opposite to the hand-held end (33) is provided with a pointer (32).

7. A toggle switch assembly with a positioning device according to claim 6, characterized in that: A nylon mounting block (9) is provided between the handheld end (33) and the lock head (2), and the handle (3) and the nylon mounting block (9) are fixedly connected by a screw B (10).

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