CN211350546U

CN211350546U - Handle self-locking structure and fuse

Info

Publication number: CN211350546U
Application number: CN202020128907.7U
Authority: CN
Inventors: 盛勇兵; 宿彦荣; 王斌; 翟子夜; 任昌宾
Original assignee: Zhejiang Tengen Electric Co Ltd
Current assignee: Zhejiang Tengen Electric Co Ltd
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-08-25
Anticipated expiration: 2030-01-20

Abstract

Handle self-locking structure and fuse. The problem that the handle can rotate under the conventional state of the existing switching device is mainly solved. The method is characterized in that: still be equipped with elasticity piece (4) and clearance fit's locking piece (3) that reset in the casing, the locking piece includes spacing portion (31) and unblock portion (32), the locking piece includes its spacing portion under the effect that elasticity resets with the spacing cooperation of handle makes the not rotatable first position of handle with after the unblock portion atress the locking piece leaves the handle makes the rotatable second position of handle. The utility model provides a handle auto-lock structure and fuse, its locking piece can prevent under conventional state that the handle from rotating, and at the internal back of the cabinet of packing into, the locking piece can move about to the second position and make the handle rotate, prevents the maloperation.

Description

Handle self-locking structure and fuse

Technical Field

The utility model relates to a switching device field, concretely relates to handle self-locking structure and fuse.

Background

There are many switching devices, such as circuit breakers, fuses or relays, most of which are provided with a handle, and there is a plug-in type switching device on the market at present, which requires the handle to be unrotatable when not mounted to the cabinet.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of background art, the utility model provides a handle auto-lock structure and fuse have mainly solved the problem that the handle can rotate under present switching device conventional state.

The utility model adopts the technical proposal that:

handle auto-lock structure, which comprises a housin, be equipped with rotatable handle on the casing, still be equipped with elasticity reset piece and clearance fit's locking piece in the casing, the locking piece includes spacing portion and unblock portion, the locking piece includes its spacing portion under the effect that elasticity reset the piece with the spacing cooperation of handle makes the not rotatable primary importance of handle, with after the unblock portion atress the locking piece leaves the handle makes the rotatable second place of handle.

The locking piece is in hinged fit with the shell.

The elastic reset piece is a torsion spring.

The limiting part is a boss arranged at one end of the locking piece, a through groove is formed in the shell, and when the locking piece is located at the first position, the boss penetrates through the through groove and is arranged outside the shell; when the locking piece is in the second position, the boss is arranged in the shell.

The limiting portion is an insertion block arranged at one end of the locking piece, a slot is formed in the handle, and when the locking piece is located at the first position, the insertion block is inserted into the slot to enable the handle to be incapable of rotating.

When the locking piece is in the first position, the back of the locking piece is in contact with the inner wall of the through slot.

The torsion spring comprises two press feet, one press foot is pressed against the inner wall of the shell, and the other press foot is pressed against the back of the locking piece and used for pushing the limiting part into the slot.

The shape of the shell is cuboid.

A fuse comprises a shell, wherein a fusible core is arranged in the shell, and the fuse also comprises the handle self-locking structure.

The utility model has the advantages that: the utility model provides a handle auto-lock structure and fuse, its locking piece can prevent under conventional state that the handle from rotating, and at the internal back of the cabinet of packing into, the locking piece can move about to the second position and make the handle rotate, prevents the maloperation.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention.

Fig. 2 is an enlarged schematic view of a point a in fig. 1.

Fig. 3 is a schematic partial cross-sectional view (first position) of an embodiment of the present invention.

Fig. 4 is a partial perspective view (second position) of an embodiment of the present invention.

Fig. 5 is a schematic partial cross-sectional view of an embodiment of the invention (second position).

Fig. 6 is a schematic view of the internal structure of the fuse having the handle self-locking structure.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings: as shown in the figure, handle auto-lock structure, including casing 1, be equipped with rotatable handle 2 on the casing, still be equipped with elasticity reset 4 and clearance fit's locking piece 3 in the casing, the locking piece includes spacing portion 31 and unblock portion 32, the locking piece includes its spacing portion under the effect that elasticity reset the piece with the spacing cooperation of handle makes the not rotatable primary importance of handle, with unblock portion atress back the locking piece leaves the handle makes the rotatable second place of handle. Under the conventional state (namely before not installing into the cabinet body), this locking piece elasticity reset piece's effect again, its spacing portion and the spacing cooperation of handle, the handle is nonrotatable this moment, after the installation targets in place, the unblock portion of this locking piece can receive the pressure of the cabinet body and make the locking piece rotate and leave the handle, and the handle can rotate this moment.

In this embodiment, the locking member is in hinged engagement with the housing as shown. The locking piece can slide or rotate, and preferably, the locking piece is in rotating fit, so that the structure is more compact.

In this embodiment, as shown in the drawings, the elastic restoring member is a torsion spring. And may be a spring, a leaf spring, etc.

In this embodiment, as shown in the figure, the limiting part is a boss arranged at one end of the locking member, a through groove 11 is arranged on the housing, and when the locking member is at the first position, the boss passes through the through groove and is arranged outside the housing; when the locking piece is in the second position, the boss is arranged in the shell. The boss is arranged outside the shell, when the cabinet body is arranged in the cabinet body, the inner wall of the cabinet body can force the inner wall of the cabinet body to rotate clockwise to enter the shell, when the handle rotates, the handle is stressed anticlockwise, and the back of the handle can be abutted against the inner wall of the through groove to enable the handle to be unrotatable.

In this embodiment, as shown in the figure, the limiting portion is an insertion block arranged at one end of the locking member, the handle is provided with a slot 21, and when the locking member is located at the first position, the insertion block is inserted into the slot to make the handle non-rotatable. The handle is limited and can not rotate through the arrangement of the slot and the insertion block.

In this embodiment, as shown, the back of the locking element is in contact with the inner wall of the through slot when the locking element is in the first position.

In this embodiment, as shown in the figure, the torsion spring includes two press feet 41, one of which is pressed against the inner wall of the housing, and the other of which is pressed against the back of the locking member for pushing the limiting portion into the slot.

In the present embodiment, as shown in the figure, the housing 1 has a rectangular parallelepiped shape.

In this embodiment, as shown in the drawings, a fuse includes a housing, a fusible core 8 is disposed in the housing, and the fuse further includes the handle self-locking structure.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The embodiments described with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. The examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of the present invention.

Claims

1. Handle auto-lock structure, including casing (1), be equipped with rotatable handle (2) on the casing, its characterized in that:

an elastic reset piece (4) and a locking piece (3) which is movably matched are also arranged in the shell, the locking piece comprises a limiting part (31) and an unlocking part (32),

the locking piece comprises a first position and a second position, wherein the first position is formed by the limiting part of the locking piece under the action of the elastic reset piece and the handle in a limiting matching mode so that the handle cannot rotate, the second position is

The unlocking part is forced to leave the second position where the handle can rotate because of the locking part.

2. The handle self-locking structure according to claim 1, wherein: the locking piece is in hinged fit with the shell.

3. The handle self-locking structure according to claim 1, wherein: the elastic reset piece is a torsion spring.

4. The handle self-locking structure according to claim 3, wherein: the limiting part is a boss arranged at one end of the locking piece, a through groove (11) is arranged on the shell, and when the locking piece is positioned at the first position, the boss penetrates through the through groove and is arranged outside the shell; when the locking piece is in the second position, the boss is arranged in the shell.

5. The handle self-locking structure according to claim 4, wherein: the limiting part is an insertion block arranged at one end of the locking piece, a slot (21) is formed in the handle, and when the locking piece is located at the first position, the insertion block is inserted into the slot to enable the handle to be non-rotatable.

6. The handle self-locking structure according to claim 5, wherein: when the locking piece is in the first position, the back of the locking piece is in contact with the inner wall of the through slot.

7. The handle self-locking structure according to claim 6, wherein: the torsion spring comprises two press feet (41), one press foot is pressed against the inner wall of the shell, and the other press foot is pressed against the back of the locking piece and used for pushing the limiting part into the slot.

8. The handle self-locking structure according to claim 1, wherein: the shape of the shell (1) is a cuboid.

9. A fuse, includes the shell, be equipped with fusible core (8) in the shell, its characterized in that: the handle self-locking structure of any one of claims 1 to 8 is further included.