TWI528403B - Secure lock for a low voltage switch - Google Patents

Description

Low voltage switch safety lock

The present invention relates to safety locks, and more particularly to a low pressure switch safety lock.

Generally, when repairing general electrical equipment or electrical products, a fixing device is usually required to limit the position of the circuit switching member of the low-voltage switch to ensure that the inspection and maintenance can be performed under a certain safety. However, the low-voltage switches of various electrical equipments or products usually have different specifications according to different equipment requirements. Therefore, it is necessary to invent a fixing device capable of limiting the circuit switching components, which is necessary for engineering construction and maintenance. The low-voltage switch safety locks are disclosed by the patents M441203, I371052 and I314751, and the like.

However, in such a conventional safety lock technology, the safety lock disclosed in M441203 additionally includes a casing for integrally covering the low-pressure switch therein, and in combination with a known locking device, resulting in the need to purchase a housing and Locking equipment is costly and difficult to carry. Furthermore, the low-voltage switch safety lock structure disclosed in I371052 and I314751 does not require an additional housing cover outside the low-voltage switch, and is convenient to carry and can fix the circuit switching member, but still requires additional locking. The device also needs to be equipped with a pair of locks. If the key is lost, it cannot be unlocked, which is inconvenient to use. These technologies can only be used with a single low-voltage switch specification, and cannot be applied to the variable low-voltage switch specifications. The versatility is not high, and there are shortcomings that need to be improved.

Therefore, it is necessary to provide a novel and progressive low-voltage switch safety lock to solve the above problems.

The main object of the present invention is to provide a low-voltage switch safety lock that can be placed on the clamping portion of the main body with the body of the low-voltage switch adjusted to prevent switching of the internal circuit of the main body, and no additional The purchase of shells or locks provides a wide range of compatibility and applicability, reducing cost, and is convenient and economical.

To achieve the above object, the present invention provides a low voltage switch safety lock for installation in a low voltage switch. The low-voltage switch has a body and a switching member disposed on the body and operable externally to switch the internal circuit of the body, and an external portion of the body is provided with a clamping portion. The low-voltage switch safety lock comprises a main body member, a transmission assembly, a driving member and a rotating member. The body member has a resisting wall and a stop for preventing the switching member from being switched. The transmission assembly is rotatably disposed on the body member. The drive member is rotatably coupled to one end of the transmission assembly relative to the transmission assembly to drive the transmission assembly to rotate. The rotating member is fixed to the other end of the transmission assembly and rotatable about an axis, and defines a circumferential direction with respect to the axis, the rotating member has a circumferential surface facing the abutting wall, and the circumferential surface is along the circumferential direction The axis has a plurality of different radial distances, and the abutting wall and the circumferential surface are clamped to the interposed portion.

1‧‧‧Low-voltage switch safety lock

2‧‧‧ low voltage switch

20‧‧‧ body

21‧‧‧Switching parts

22‧‧‧Clamping Department

3‧‧‧ body parts

31‧‧‧The wall

32‧‧ ‧ 挡

32A‧‧‧ card slot

32B‧‧‧ hook

32C‧‧‧ sets of slots

34‧‧‧Part II

35‧‧‧thorn components

351‧‧‧thorn

352‧‧‧Flexible parts

353‧‧‧Operating parts

4‧‧‧Transmission components

41‧‧‧The first set of joints

5‧‧‧ Drives

51‧‧‧Second group of joints

52‧‧‧ screw holes

53‧‧‧First screw

32D‧‧‧ Cover structure

320‧‧ ‧ retaining wall

321‧‧ ‧ retaining wall

33‧‧‧Part 1

330‧‧‧ teeth

6‧‧‧Transfer

61‧‧‧Week

62‧‧‧ screw holes

63‧‧‧Second screw

A‧‧‧ axis

B‧‧‧Weighing

1 and 2 are assembly diagrams of a low voltage switch safety lock according to a first preferred embodiment of the present invention.

3 is a schematic view of a low voltage switch safety lock according to a first preferred embodiment of the present invention.

4 is an exploded view of the low voltage switch safety lock of the first preferred embodiment of the present invention.

FIG. 5 is a schematic diagram of a low voltage switch lock according to a second preferred embodiment of the present invention.

6A-6B are perspective views of a low voltage switch safety lock in accordance with a third preferred embodiment of the present invention.

FIG. 7 is a schematic diagram of a low voltage switch safety lock according to a fourth preferred embodiment of the present invention.

FIG. 8 is a schematic diagram of a low voltage switch safety lock according to a fifth preferred embodiment of the present invention.

FIG. 9 is a schematic diagram of a low voltage switch safety lock according to a sixth preferred embodiment of the present invention.

The following is a description of the possible embodiments of the present invention, and is not intended to limit the scope of the invention as claimed.

Referring to Figures 1-4, there is shown a first preferred embodiment of the present invention. The low voltage switch safety lock 1 of the present invention is mounted on a low voltage switch 2. Here, "low voltage" means a voltage below 600 volts. The low voltage switch 2 is, for example, a no-fuse switch, a leakage protection circuit breaker, an electromagnetic contactor, or the like. The low-voltage switch 2 has a body 20 and a switching member 21 disposed on the body 20 and operable externally to switch the internal circuit of the body 20. The outside of the body 20 is provided with a clamping portion 22. The intervening portion 22 is not limited to the periphery of the switching member 21, and may be provided in other portions of the main body 20, and any structure capable of holding functions (such as a convex portion, a concave portion, a card slot, etc.) Including it.

The low-voltage switch safety lock 1 comprises a main body member 3, a transmission assembly 4, a driving member 5 and a rotating member 6.

Referring to FIG. 3-4, the main body member 3 has a resisting wall 31 and a blocking portion 32 for engaging the switching member. In this embodiment, the main body member 3 is sandwiched and wrapped around the clamping portion. In the portion of the portion 22, the abutting wall 31 is opposite to one side of the clamping portion 22. The blocking portion 32 is a card slot 32A. The card slot 32A has a blocking wall 320. When the abutting wall 31 and the peripheral surface 61 are sandwiched When the clamping portion 22 is fixed, the blocking wall 320 is locked to one side of the switching member 21 toward a switching direction. In addition, the body member 3 It may be, but is not limited to, being clamped to the switching member 21, or may be pinned to any portion of the low-voltage switch 2, and the blocking portion 32 is locked against the switching member 21, and the switching member 21 is fixed without being fixed. The switching can be the position of the body member 3.

The transmission assembly 4 is rotatably disposed on the main body member 3, and the driving member 5 is coupled to the transmission assembly 4. More specifically, the drive member 5 is rotatably coupled to one end of the transmission assembly 4 relative to the transmission assembly 4 to drive the transmission assembly 4 to rotate. Preferably, the transmission assembly 4 is provided with a first assembly portion 41. The driving member 5 is provided with a second assembly portion 51. The second assembly portion 51 can be assembled or separated from the first assembly portion 41. . In the present embodiment, the second set of connecting portions 51 is provided with a screw hole 52. The screw hole 52 is oppositely connected to the first connecting portion 41 of the transmission assembly 4, and a first screw member 53 can be screwed to the screw. The hole 52 is in contact with the first set of joints 41.

The rotating member 6 is fixed to the other end of the transmission assembly 4 and is rotatable about an axis A. A circumferential direction B is defined with respect to the axis A, and the rotating member 6 has a circumferential surface 61 facing the abutting wall 31 along which the circumferential surface 61 has a plurality of different radial distances with respect to the axis A. The abutting wall 31 and the circumferential surface 61 are clamped to the intervening portion 22 . In the embodiment, the rotating member 6 is a disc, and the disc is eccentrically connected to the transmission assembly 4 along the axis A. The disc is provided with a screw hole 62 extending through the disc. One end of the hole 62 is screwed to a second screw 63. Preferably, the second screw 63 can be screwed through the body member 3 and connected to the transmission assembly 4.

Referring to the second embodiment of the present invention (as shown in FIG. 5), it can be understood that the transmission assembly 4 can be adjusted to a suitable structure in cooperation with the structure of the main body member 3, the driving member 5 and the rotating member 6. The configuration allows the driving member 5 to be freely directly coupled or separated from the transmission assembly 4 (such as socket, snap, plug, etc.), the configuration can be disassembled without the tool, and the hand can be operated only by the hand. The driving member 5 is freely directly coupled or separated, and can be used as a transmission mechanism to drive the rotating member 6 Move in one direction. In addition, the rotating member 6 is not limited to the shape of the disc, and may be other components (such as a toothed disc, a cam, etc.) that can be rotated.

Please refer to FIG. 6A-6B, which shows a third embodiment of the present invention. The body member 3 further includes a first portion 33 and a second portion 34. The first portion 33 and the second portion 34 are selectively selectable. The adjustment distance is assembled in a phase, and the distance from the abutment wall 31 to the circumferential surface 61 is changed corresponding to the distance between the first portion 33 and the second portion 34. Further, wherein the first portion 33 is provided with a tooth member 330, the second portion 34 is provided with a ratchet assembly 35, and the ratchet assembly 35 is selectively engageable with the tooth member 330 without allowing the first portion 33 and The second portions 34 are remote from each other. In more detail, the ratchet assembly 35 includes a ratchet block 351 movably disposed on the second portion 34, an elastic member 352 disposed between the second portion 34 and the spine block 351, and a linkage The spine 351 protrudes from the second portion of the operating member 353. The elastic member 352 elastically engages the spine 351 to engage the tooth member 330. The operating member 353 selectively releases the spine 351 and the tooth. The engagement between the members 330 allows the first portion 33 and the second portion 34 to adjust the distance between the first portion 33 and the second portion 34 according to the size of the clamping portion 22. It can be understood that the operating member 353 can be disposed at a portion of the blocking portion 32 or can be disposed on a side of the second portion 34 facing the body 20, thereby preventing the operating member 353 from being unintentionally mis-touched.

It should be noted that the first portion 33 and the second portion 34 are not limited to the manner of the ratcheting of the teeth. Alternatively, the first portion 33 and the second portion 34 may be adjacent to each other without allowing each other. It is not necessary to keep away from other structures (such as card joints, abutments, etc.) that can be fixed.

Referring to FIG. 7, in the fourth embodiment of the present invention, the blocking portion is a hook 32B, and the hook 32B has a retaining wall 321 when the abutting wall and the circumference When the surface is clamped to the interposed portion, the blocking wall 321 is locked to one side of the switching member 21 facing a switching direction. The hook 32B may be integrally formed from the body member 3, or may be assembled to a part of the body member 3, and the switch member 21 may be fixed to be in a position that cannot be changed. The rest is the same as the above embodiments, and therefore will not be described again. Compared with the above embodiment, the hook 32B of the embodiment can provide a blocking structure and fix the switching member 21, and the hook 32B can fix the switching member 21 from any switching direction.

Referring to FIG. 8 , in comparison with the fourth embodiment, in the fifth embodiment of the present invention, the blocking portion of the low-voltage switch safety lock is a set of slots 32C, and the abutting wall and the circumferential surface are clamped. At the time of the interposing portion 22, the switching member 21 is bored in the sleeve 32C. It should be noted that the sleeve 32C is disposed on the body member 3 and the sleeve 32C may but not necessarily penetrate the body member 3. Therefore, the switching member 21 can be more completely restricted than the fourth embodiment, preventing the switching member 21 from being accidentally touched. The rest is the same as the above embodiment, so the description will not be repeated.

Referring to FIG. 9 , in comparison with the fifth embodiment, in the sixth embodiment of the present invention, the blocking portion is a cover structure 32D, and the abutting wall and the circumferential surface are clamped to the clamping portion. At the time of the portion 22, the cover structure 32D covers the switching member 21 therein. Therefore, the cover member 32D can completely cover the switching member 21 therein as compared with the fifth embodiment.

Therefore, the low-voltage switch safety lock of the present invention can be fixed to any part of the main body or opposite sides of the clamping portion of the main body, and the blocking portion can be locked on one side of the switching member toward a switching direction, and can be The driving member drives the transmission assembly to abut the circumferential surface of the rotating member toward one side of the body or the clamping portion, and the switching member is restricted by the blocking portion in a switching direction and cannot be changed in position. Alternatively, the body member may be provided with different structural features such as the hook, the sleeve or the cover structure, and can be adjusted according to various usage requirements. In addition, the low voltage switch is safe The lock may further include the first portion and the second portion, and the first portion and the second portion may be selectively adjusted to a proper size and fixed to the main body or the size of the main body or the clamping portion of the main body. The two sides of the clamping portion are utilized, and the blocking portion is utilized to prevent the switching member from being switched at will.

In summary, the overall structural design, practicability and efficiency of the present invention are indeed fully in line with the needs of industrial development, and the disclosed structural invention is also an unprecedented innovative structure, so it has "novelty" should Undoubtedly, the invention can be more effective than the conventional structure, and therefore has "progressiveness", which fully complies with the requirements of the application requirements of the invention patents of the Chinese Patent Law, and is filed according to law, and please The bureau will review it early and give it affirmation.

1‧‧‧Low-voltage switch safety lock

2‧‧‧ low voltage switch

20‧‧‧ body

21‧‧‧Switching parts

22‧‧‧Clamping Department

3‧‧‧ body parts

4‧‧‧Transmission components

5‧‧‧ Drives

6‧‧‧Transfer

Claims (10)

A low-voltage switch safety lock is provided for mounting on a low-voltage switch, the low-voltage switch has a body and a switching member disposed on the body and operable externally to switch the internal circuit of the body, and an external portion of the body is provided with a clamping portion The low-voltage switch safety lock comprises: a main body member having a resisting wall and a blocking portion for preventing the switching member from being switched; a transmission assembly rotatably disposed on the main body member; and a driving member not opposed to the transmission The assembly is rotatably coupled to one end of the transmission assembly to drive the transmission assembly to rotate; a rotating member is affixed to the other end of the transmission assembly and rotatable about an axis defining a circumferential direction relative to the axis, the rotating member having a circumferential surface facing the abutting wall, wherein the circumferential surface has a plurality of different radial distances with respect to the axis, and the abutting wall and the circumferential surface are clamped to the interposed portion. The low-voltage switch safety lock according to claim 1, wherein the blocking portion is a card slot, the card slot has a retaining wall, and the retaining wall when the abutting wall and the circumferential surface are clamped to the clamping portion The card is blocked from one side of the switching member toward a switching direction. The low-voltage switch safety lock according to claim 1, wherein the blocking portion is a hook, the hook has a retaining wall, and the retaining wall when the abutting wall and the circumferential surface are clamped to the clamping portion The card is blocked from one side of the switching member toward a switching direction. The low-voltage switch safety lock according to claim 1, wherein the blocking portion is a set of slots, and the switching member is disposed in the sleeve when the abutting wall and the circumferential surface are clamped to the clamping portion. The low-voltage switch safety lock according to claim 1, wherein the blocking portion is a cover structure, and the cover structure covers the switching member when the abutting wall and the circumferential surface are clamped to the clamping portion Within it. The low-voltage switch safety lock of claim 1, wherein the transmission assembly is provided with a first assembly The driving member is provided with a second assembly portion, and the second assembly portion is freely directly connected or separated from the first assembly portion. A low-pressure switch safety lock according to claim 1, wherein the rotating member is a disk that is eccentrically coupled to the transmission assembly along the axis. The low-voltage switch safety lock of claim 1, wherein the body member comprises a first portion and a second portion, the first portion and the second portion being selectively adjustable in distance to each other, the abutting wall to the The distance of the circumferential surface changes corresponding to the distance between the first portion and the second portion. The low-pressure switch safety lock of claim 8, wherein the first portion is provided with a tooth member, and the second portion is provided with a ratchet assembly, the ratchet assembly engaging the tooth member without allowing the first portion and the second portion Some are far from each other. The low-pressure switch safety lock according to claim 9, wherein the ratcheting assembly comprises a ratchet member movably disposed on the second portion, an elastic member disposed between the second portion and the spine block, and An operating member that interlocks the ratchet and protrudes from the second portion, the elastic member springs the ratchet to engage the tooth member, and the operating member selectively releases the engagement between the ratchet and the tooth member .