CN212485255U

CN212485255U - Pull ring mechanism of plug-in circuit breaker and circuit breaker

Info

Publication number: CN212485255U
Application number: CN202021594326.9U
Authority: CN
Inventors: 史胜余; 李海茭; 祁卫华; 许利战
Original assignee: Delixi Electric Co Ltd
Current assignee: Delixi Electric Co Ltd
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2021-02-05
Anticipated expiration: 2030-08-04

Abstract

The utility model relates to a plug-in circuit breaker's pull ring mechanism and circuit breaker, plug-in circuit breaker include casing and handle operation portion, and the casing is equipped with handle installation mouth and outlet including relative preceding terminal surface and the rear end face that sets up on the preceding terminal surface, and handle operation portion installs in the handle installation mouth. The pull ring mechanism comprises a pull ring, a horizontal sliding groove perpendicular to the front end face is formed in the front end of the shell, the pull ring is installed in the horizontal sliding groove, meanwhile, the front end portion of the pull ring extends out of the shell to separate the front end face from top to bottom, and the handle installation port and the wire outlet are respectively located on the upper side and the lower side of the extending end of the pull ring. Compared with the prior art, the utility model improves the convenience of pulling out the plug-in circuit breaker by arranging the pull ring on the shell; meanwhile, the pull ring can also be used as a partition plate to separate the handle operation part from the conducting wire of the wiring terminal, so that the interference of the conducting wire to the handle operation part is avoided, the defect that the opening and closing movement is not in place is overcome, and the safety is improved.

Description

Pull ring mechanism of plug-in circuit breaker and circuit breaker

Technical Field

The utility model belongs to the technical field of the low voltage circuit breaker and specifically relates to a pull ring mechanism and circuit breaker of bayonet circuit breaker are related to.

Background

In recent years, plug-in circuit breakers are more and more widely used, and particularly, with the rapid development of the 5G industry, 5G cabinets have more and more requirements, and plug-in circuit breakers used in cooperation with the 5G cabinets are more and more valued by manufacturers.

Chinese utility model application with publication number CN107993900A discloses a plug-in miniature circuit breaker. The utility model discloses an application is the most common bayonet circuit breaker of market. The plug-in circuit breaker adopts a button type structure, and when the button is pressed, the circuit breaker is switched on; when the button is pulled out, the breaker is opened. But this structure easily takes place the maloperation problem that the circuit breaker breaks away from the rack when opening. In order to solve the problem, the application of chinese utility model with application number 202010287069.2 provides a switching-on/off handle mechanism of plug-in circuit breaker, through the rotary control combined floodgate and the separating brake of handle rocking arm, operates the locking piece through rectilinear movement.

However, the above structures all have the following disadvantages: 1. the height and width of the plug-in circuit breaker are only about 4x2cm, and the front end face of the circuit breaker needs to be provided with a handle operation part (a button or a handle rocker arm) and a wire outlet to connect a wire outlet terminal, and the installation space of the cabinet is narrow, so that the wire of the wire outlet terminal can be pressed against the handle operation part, and the operation of a user is inconvenient. The interference of the wire to the handle operation part also easily causes the risk of incomplete switching-on (virtual switching-on) and the risk of incomplete switching-off when the product has short circuit/overload fault, thus causing great potential safety hazard for users. 2. Plug-in circuit breakers are generally pulled out of the cabinet by a handle operating portion. Due to the small size of the plug-in circuit breaker, particularly the contact area of the rocker arm or the button of the handle is smaller, and the required pulling force is larger, the user is difficult to pull from the cabinet.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a plug-in circuit breaker's pull ring mechanism and circuit breaker in order to overcome the defect that above-mentioned prior art exists, improve the convenience of drawing, can keep apart the wire and the handle operation portion of terminal simultaneously, improve user's power consumption security.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a plug-in circuit breaker's pull ring mechanism, plug-in circuit breaker include casing and handle operation portion, and the casing is including relative preceding terminal surface and the rear end face that sets up, be equipped with handle installing port and outlet on the preceding terminal surface, handle operation portion install in the handle installing port, pull ring mechanism includes the pull ring, the front end of casing be equipped with preceding terminal surface vertically horizontal spout, the pull ring install in horizontal spout.

Furthermore, the front end part of the pull ring extends out of the shell to divide the front end surface into two areas, and the handle mounting port and the wire outlet are respectively positioned in the two areas.

Further, the pull ring mechanism further comprises a locking piece, the locking piece is hinged in the shell through a locking shaft and a torsion spring, a shell opening is formed in the top surface of the shell, the locking piece comprises a linkage portion and a boss portion, the boss portion extends out of the shell opening, the linkage portion is used for contacting the rear end of the pull ring, when the pull ring moves towards the front end of the shell along the horizontal sliding groove, the rear end of the pull ring drives the linkage portion to enable the locking piece to rotate along the locking shaft, and therefore the boss portion retracts from the shell opening.

Furthermore, a limiting block is arranged above the horizontal sliding groove, a convex block is arranged at the rear end of the pull ring, and when the pull ring moves to a certain position in the horizontal sliding groove, the limiting block contacts the convex block to limit the movement of the pull ring.

Furthermore, the device comprises two limit blocks, and the lug moves between the two limit blocks.

Further, the pull ring is a rectangular pull ring.

Further, the pull ring is a metal pull ring.

Further, the handle operation part is a button or a rotary handle.

A plug-in circuit breaker comprising a pull-tab mechanism of a plug-in circuit breaker as described in any one of the above.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model improves the convenience of pulling out the plug-in circuit breaker by arranging the pull ring on the shell, and the user can conveniently realize pulling by hands or auxiliary tools; meanwhile, the pull ring can also be used as a partition plate to separate the handle operation part from the conducting wire of the wiring terminal, so that the interference of the conducting wire to the handle operation part is avoided, the defect that the opening and closing movement is not in place is overcome, and the safety is improved.

2. The utility model also provides a locking piece to improve the stability of the plug-in circuit breaker installed in the cabinet, and the locking piece is linked with the pull ring, on one hand, the structure enables the exposed aperture to be larger when the circuit breaker is drawn, and the operation is easier; on the other hand, the pull ring directly drives the locking piece to unlock in the moving process, so that the plug-in circuit breaker and the cabinet are smoothly separated, and the operation integrity is better.

3. The utility model discloses a set up the stopper on the horizontal spout to and the lug of pull ring rear end, prevented that the pull ring from following the horizontal spout at the activity in-process, improve structural stability.

Drawings

Fig. 1 is a schematic structural diagram of the first embodiment.

Fig. 2 is a schematic view of a part of the internal structure of the first embodiment.

Fig. 3 is a schematic structural diagram of the second embodiment.

Fig. 4 is a schematic view of a part of the internal structure of the second embodiment.

Reference numerals: 1. the handle comprises a shell body, 11, a handle mounting opening, 12, an outlet opening, 13, a horizontal sliding groove, 14, a shell body opening, 15, a limiting block, 2, a handle operating part, 3, a pull ring mechanism, 31, a pull ring, 31a, a convex block, 32, a locking piece, 32a, a linkage part, 32b, a boss part, 33, a locking shaft, 34 and a torsion spring.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Example one

As shown in fig. 1 and 2, the present embodiment provides a pull-tab mechanism of a plug-in type circuit breaker, which is installed in a certain plug-in type circuit breaker. Plug-in circuit breaker itself includes casing 1 and handle operation portion 2, and casing 1 is equipped with handle installing port 11 and outlet 12 including relative preceding terminal surface and the rear end face that sets up on the terminal surface before, and handle operation portion 2 is installed in handle installing port 11. The handle operation part 2 can be a button or a rotary handle structure, and the opening and closing of the circuit breaker can be realized through the position change of the handle operation part 2. The handle operating portion 2 in the present embodiment is preferably a rotary handle.

The tab mechanism 3 comprises a tab 31. The front end of the shell 1 is provided with a horizontal sliding chute 13 perpendicular to the front end surface. The horizontal sliding groove 13 may be a sliding rail structure, and in this embodiment, the horizontal sliding groove 13 is formed by an internal partition of the outlet 12 and is a horizontal plane. The tab 31 is mounted on a horizontal surface. A limiting block 15 is arranged above the horizontal sliding groove 13, and the pull ring 31 is installed between the horizontal sliding groove 13 and the limiting block 15 to form limiting in the vertical direction of the pull ring 31. The rear end of the pull ring 31 is provided with a convex block 31a, and the number of the limiting blocks 15 is two. When the pull ring 31 moves in the horizontal sliding groove 13, the projection 31a moves between the two stoppers 15. The pull ring 31 is mounted on the horizontal chute 13, and the front end of the pull ring 31 protrudes out of the housing 1 to form a vertical partition on the front end surface. The handle mounting opening 11 and the outlet 12 disposed on the front end surface are respectively located on the upper side and the lower side of the extending end of the pull ring 31, in this embodiment, the handle mounting opening 11 is located on the upper side, and the outlet 12 is located on the lower side. The front end of the pull ring 31 can be arc-shaped, horseshoe-shaped, trapezoidal, rectangular and the like, the specific structure is not limited, and the rear end of the pull ring 31 is rectangular and can be just embedded into the horizontal sliding groove 13. In this embodiment, the pull ring 31 is rectangular as a whole, so that the structure is simplest. The material of the pull ring 31 may be metal, hard plastic, or the like, and preferably metal.

The working principle of the embodiment is as follows: when the plug-in circuit breaker is in a cabinet, the pull ring 31 is in a semi-contraction state, a partition plate is formed at the exposed part of the front end of the pull ring, the handle operation part 2 and a conducting wire of a wiring terminal are separated, the interference of the conducting wire to the handle operation part 2 is avoided, the defect that the opening and closing movement is not in place is overcome, and the safety is improved. When plug-in circuit breaker is pulled out from the rack to needs, the user slightly stirs pull ring 31 through instrument or finger, and pull ring 31 can outwards extend partly earlier this moment for the aperture grow of pull ring 31, the instrument of being convenient for or stretching into of finger, thereby pull out the circuit breaker smoothly, improve the operation convenience.

Example two

As shown in fig. 3 and 4, the present embodiment has the same overall structure as the first embodiment, except that the tab mechanism 3 further includes a locking member 32. The locking member 32 includes a interlocking portion 32a and a boss portion 32b connected to each other, and a joint of the interlocking portion 32a and the boss portion 32b is hinged in the housing 1 by a locking shaft 33 and a torsion spring 34. Specifically, the torsion spring 34 is nested on the locking shaft 33, and has one end fixedly connected to the locking member 32 and the other end fixed to the inner side wall of the housing 1. The locking piece 32 is located rearward and above the tab 31. The top end of the housing 1 is provided with a housing opening 14, and the locking member 32 is normally under the action of the torsion spring 34 to make the boss portion 32b always extend out of the housing 1 from the housing opening 14, and form a fixed connection with the cabinet. When the plug-in type circuit breaker needs to be pulled out from the cabinet, the rear end of the pull ring 31 drives the interlocking portion 32a on the locking member 32 to move, so that the locking member 32 rotates around the locking shaft 33 against the restoring force of the torsion spring 34, and the boss portion 32b retracts from the case opening 14 at the top end of the case 1 into the case 1, thereby achieving the separation.

The linkage structure of the locking piece 32 and the pull ring 31 can improve the stability of the installation of the plug-in circuit breaker in the cabinet, and the pull ring 31 can directly drive the locking piece 32 to be unlocked in the moving process, so that the plug-in circuit breaker and the cabinet are smoothly separated, and the operation integrity is better.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides a plug-in circuit breaker's pull ring mechanism, plug-in circuit breaker include casing (1) and handle operation portion (2), casing (1) including relative preceding terminal surface and the rear end face that sets up, be equipped with handle installation mouth (11) and outlet (12) on the preceding terminal surface, handle operation portion (2) install in handle installation mouth (11), its characterized in that, pull ring mechanism (3) include pull ring (31), the front end of casing (1) be equipped with preceding terminal surface vertically horizontal spout (13), pull ring (31) install in horizontal spout (13).

2. The pull-tab mechanism of a plug-in circuit breaker according to claim 1, characterized in that the front end of the pull-tab (31) protrudes out of the housing (1) to divide the front face into two regions, the handle mounting opening (11) and the outlet opening (12) being located in the two regions, respectively.

3. A pull-tab mechanism of a plug-in circuit breaker according to claim 1, characterized in that the pull-tab mechanism (3) further comprises a locking member (32), the locking member (32) is hinged in the housing (1) by a locking shaft (33) and a torsion spring (34), a housing opening (14) is provided in the top surface of the housing (1), the locking member (32) comprises a linkage portion (32a) and a boss portion (32b), the boss portion (32b) protrudes from the housing opening (14), the linkage portion (32a) is adapted to contact the rear end of the pull-tab (31), when the pull-tab (31) moves in the direction of the front end of the housing (1) along the horizontal sliding slot (13), the rear end of the pull-tab (31) drives the linkage portion (32a) to rotate the locking member (32) along the locking shaft (33), so that the boss portion (32b) is retracted from the housing opening (14).

4. The pull ring mechanism of a plug-in circuit breaker according to claim 1, wherein a stopper (15) is disposed above the horizontal sliding groove (13), a protrusion (31a) is disposed at a rear end of the pull ring (31), and when the pull ring (31) moves to a certain position in the horizontal sliding groove (13), the stopper (15) contacts the protrusion (31a) to limit the movement of the pull ring (31).

5. A pull-tab mechanism of a plug-in circuit breaker according to claim 4, characterized in that it comprises two stop blocks (15), said cam (31a) being movable between the two stop blocks (15).

6. A pull-tab mechanism of a plug-in circuit breaker according to any one of claims 1 to 3, characterized in that said pull-tab (31) is a rectangular pull-tab.

7. A pull-tab mechanism of a plug-in circuit breaker according to any one of claims 1 to 3, characterized in that said pull-tab (31) is a metal pull-tab.

8. The pull ring mechanism of a plug-in circuit breaker according to claim 1, characterized in that the handle operating part (2) is a push button or a rotary handle.

9. A plug-in circuit breaker, characterized in that it comprises a pull-tab mechanism of a plug-in circuit breaker according to any one of claims 1 to 8.