CN112509889A

CN112509889A - Handle locking device of molded case circuit breaker

Info

Publication number: CN112509889A
Application number: CN202011515374.9A
Authority: CN
Inventors: 谢卫锋
Original assignee: Zhejiang Junlang Electric Automation Co ltd
Current assignee: Zhejiang Junlang Electric Automation Co ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-03-16
Anticipated expiration: 2040-12-21
Also published as: CN112509889B

Abstract

The invention discloses a handle locking device of a molded case circuit breaker, which comprises a circuit breaker shell and a handle, wherein the handle is provided with a brake opening position and a brake closing position on the circuit breaker shell, the handle is of a hollow structure, the side part of the handle is provided with a strip-shaped through hole arranged along the height direction of the handle, the handle is internally provided with a sliding block capable of moving up and down, an adjusting part which is rotatably arranged at the top of the handle and is in threaded fit with the sliding block, and a stop part of which the middle part is rotatably connected with the handle through a pin shaft, the stop part is arranged at the strip-shaped through hole, the hole on the stop part, which is matched with the pin shaft, is a kidney-shaped hole, the upper end of the stop part is hinged. The invention has reasonable structure, is convenient for locking the handle at the opening position and has good practicability.

Description

Handle locking device of molded case circuit breaker

Technical Field

The invention relates to a handle locking device of a molded case circuit breaker, and belongs to the field of the structural design of the molded case circuit breaker.

Background

Moulded case circuit breaker pulls (switch over between the position of closing the floodgate and the separating brake position) through the handle to the circuit breaker and realizes the break-make electric function of circuit breaker, in order to prevent that the circuit breaker handle from being pulled by the mistake in the circuit breaker use, can set up handle locking device usually, and the condition of using most often is, when overhauing the load circuit, locks the handle in the separating brake position, avoids the personnel of knowing to pull the handle to the position of closing the floodgate and makes the circuit circular telegram and cause the incident. The handle locking device in the prior art is mostly additionally configured, the handle locking device is arranged on the handle when in use, the handle locking device needs to be carried by a maintainer, however, in actual operation, the handle cannot be locked under the condition that the handle locking device is not carried, and certain limitation exists in use.

Disclosure of Invention

Therefore, the invention aims to provide the handle locking device of the molded case circuit breaker, which is convenient for locking the handle at the brake separating position and has better practicability.

The technical scheme for realizing the purpose of the invention is as follows:

a handle locking device of a molded case circuit breaker comprises a circuit breaker shell and a handle, wherein the handle is provided with a switch-off position and a switch-on position on the circuit breaker shell, the handle is of a hollow structure, the side part of the handle is provided with a strip-shaped perforation arranged along the height direction of the handle, the handle is internally provided with a slide block capable of moving up and down, an adjusting part rotatably arranged at the top of the handle and in threaded fit with the slide block and a stop part of which the middle part is rotatably connected with the handle through a pin shaft, the stop part is arranged at the strip-shaped perforation and a hole matched with the pin shaft is a waist-shaped hole, the upper end of the stop part is hinged with the slide block, the lower end of the stop part is provided with a stop head, a clamping groove suitable for being matched with the stop head is arranged at the switch-off position on the circuit breaker shell, the, the stop head is retracted or extended out of the bar-shaped through hole, and when the handle is in a locking state, the stop head is extended out of the bar-shaped through hole and clamped into the clamping groove.

In the technical scheme, the number of the strip-shaped through holes is two, the strip-shaped through holes are correspondingly arranged on the left side and the right side of the handle respectively, and the number of the stop parts and the number of the clamping grooves are correspondingly arranged to be two.

In the above technical scheme, the adjusting piece is a bolt, and the head of the bolt is positioned outside the top end of the handle.

The invention has the positive effects that: the handle locking device is reasonable in structure, when the handle locking device is used, the handle is firstly turned to a brake separating position, then the sliding block is driven to move downwards by rotating the adjusting piece, the stop piece is further driven to rotate around the pin shaft, the stop head extends outwards from the strip-shaped through hole and is clamped into the clamping groove, therefore, the handle can be locked at the brake separating position, when the handle is unlocked, the reverse rotation adjusting piece drives the sliding block to move upwards, then the stop piece rotates reversely around the pin shaft, the stop head retracts inwards into the strip-shaped through hole, the locking and unlocking operation is convenient, the structure is optimized and reasonable, the handle locking device does not need to be carried additionally, and the handle locking device has good practicability.

Drawings

Fig. 1 is a structural view of a handle locking apparatus for a molded case circuit breaker according to the present invention;

fig. 2 is an internal structure view of the handle of the present invention.

The reference symbols shown in the figures are: 1-a circuit breaker housing; 11-a card slot; 2-a handle; 21-bar perforation; 3-a slide block; 4-an adjusting part; 5-a stop member; 51-kidney shaped hole; 52-stop head; 6-a pin shaft; 7-clamp spring.

Detailed Description

The specific structure of the handle locking device of the molded case circuit breaker in the invention is described below with reference to the attached drawings of the specification:

a molded case circuit breaker handle locking device, as shown in fig. 1 and 2, comprises a circuit breaker housing 1 and a handle 2, wherein the handle 2 has a switching-off position and a switching-on position on the circuit breaker housing 1, the handle 2 is of a hollow structure, the side part of the handle has a bar-shaped through hole 21 arranged along the height direction of the handle 2, a slider 3 capable of moving up and down, an adjusting part 4 rotatably arranged at the top of the handle 2 and in threaded fit with the slider 3, and a stop part 5 rotatably connected with the handle 2 through a pin shaft 6 at the middle part, the stop part 5 is arranged at the bar-shaped through hole 21 and a hole matched with the pin shaft 6 is a kidney-shaped hole 51, the upper end of the stop part 5 is hinged with the slider 3, the lower end of the stop part 5 is provided with a stop head 52, a clamping groove 11 suitable for being matched with the stop head 52 is arranged at the switching-off position on the circuit breaker, through rotating regulating part 4 drives slider 3 reciprocates, and then drives stop part 5 winds round pin axle 6 rotates, makes stop head 52 withdrawal or stretch out the bar is perforated 21, when handle 2 is in the locking condition, stop head 52 by the bar is perforated 21 and is stretched out and block into in the draw-in groove 11. The handle locking device in the embodiment is reasonable in structure, when the handle locking device is used, the handle 2 is firstly pulled to the brake separating position, then the handle 2 is driven by the rotating adjusting piece 4, the sliding block 3 moves downwards and then drives the stop piece 5 to wind the pin shaft 6 to rotate and enable the stop head 52 to stretch outwards the bar-shaped through hole 21 and is clamped into the clamping groove 11, so that the handle can be locked at the brake separating position, when the handle is unlocked, the reverse rotating adjusting piece 4 drives the sliding block 3 to move upwards, then the stop piece 5 winds the pin shaft 6 to rotate reversely, the stop head 52 retracts inwards, the bar-shaped through hole 21 is convenient to lock and unlock, the structure is optimized and reasonable, the handle locking device is not required to be carried in addition, and the handle locking device has good practicability.

In this embodiment, the number of the strip-shaped through holes 21 is two, and the strip-shaped through holes are respectively and correspondingly arranged on the left side and the right side of the handle 2, the number of the stop members 5 and the number of the clamping grooves 11 are correspondingly arranged into two, and the locking effect is enhanced through the one-to-one corresponding clamping of the stop heads 52 on the two stop members 5 and the two clamping grooves 11.

In this embodiment, the adjusting part 4 is a bolt, the head of the bolt is located outside the top end of the handle 2, and the rod part of the bolt is provided with a clamp spring 7 which can limit the bolt in the axial direction. In this embodiment, the stopper 5 is preferably made of stainless steel.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious changes and modifications which fall within the spirit of the invention are deemed to be covered by the present invention.

Claims

1. The handle locking device of the molded case circuit breaker comprises a circuit breaker shell (1) and a handle (2), wherein the handle (2) is provided with a switch-off position and a switch-on position on the circuit breaker shell (1), and is characterized in that the handle (2) is of a hollow structure, the side part of the handle is provided with a bar-shaped perforation (21) arranged along the height direction of the handle (2), a sliding block (3) capable of moving up and down, an adjusting piece (4) rotatably arranged at the top of the handle (2) and in threaded fit with the sliding block (3), and a stop piece (5) which is rotatably connected with the handle (2) through a pin shaft (6) is arranged in the middle of the handle (2), the stop piece (5) is arranged at the bar-shaped perforation (21) and is provided with a waist-shaped hole (51) matched with the pin shaft (6), the upper end of the stop piece (5) is hinged with the, stop part (5) lower extreme has stop head (52), be in on circuit breaker casing (1) divide floodgate position department be equipped with be suitable for with stop head (52) complex draw-in groove (11), through rotating regulating part (4) drive slider (3) reciprocate, and then drive stop part (5) wind round pin axle (6) rotate, make stop head (52) withdrawal or stretch out the bar is perforated (21), when handle (2) are in the lock state, stop head (52) by the bar is perforated (21) and is stretched out and the card is gone into in draw-in groove (11).

2. The handle locking device for the molded case circuit breaker according to claim 1, wherein the number of the bar-shaped through holes (21) is two, and the two bar-shaped through holes are correspondingly formed at the left and right sides of the handle (2), and the number of the stoppers (5) and the number of the locking grooves (11) are correspondingly formed at two.

3. A molded case circuit breaker handle lock device according to claim 1 wherein the adjustment member (4) is a bolt having a head outside the top end of the handle (2).