CN112509889B

CN112509889B - Molded case circuit breaker handle locking device

Info

Publication number: CN112509889B
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: 2025-03-11
Anticipated expiration: 2040-12-21
Also published as: CN112509889A

Abstract

The invention discloses a handle locking device for a molded case circuit breaker, comprising a circuit breaker housing and a handle, wherein the handle has an opening position and a closing position on the circuit breaker housing, the handle is a hollow structure, and its side has a strip-shaped perforation arranged along the height direction of the handle, and the handle is provided with a slider that can move up and down, an adjusting member that can be rotatably arranged at the top of the handle and is threadedly matched with the slider, and a stopper that is rotatably connected to the handle through a pin in the middle, the stopper is arranged at the strip-shaped perforation, and the hole on the stopper that is matched with the pin is a waist-shaped hole, the upper end of the stopper is hinged with the slider, the lower end of the stopper has a stopper head, and a card slot suitable for matching with the stopper head is provided on the circuit breaker housing at the opening position. The invention has a reasonable structure, is convenient for locking the handle at the opening position, and has good practicality.

Description

Plastic case breaker handle locking device

Technical Field

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

Background

The molded case circuit breaker realizes the on-off function of the circuit breaker by pulling the handle of the circuit breaker (switching between a closing position and a breaking position), and in order to prevent the handle of the circuit breaker from being pulled by mistake in the using process of the circuit breaker, a handle locking device is usually arranged. The handle locking device in the prior art is mainly additionally configured, and the handle locking device is arranged on the handle when in use, so that maintenance personnel are required to carry the handle locking device, however, in actual operation, the handle locking device cannot be locked under the condition that the handle locking device is not carried, and certain limitation exists in use.

Disclosure of Invention

In this regard, the present invention is directed to providing a molded case circuit breaker handle locking device that facilitates locking the handle in the open position, with better practicality.

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

The utility model provides a moulded case circuit breaker handle locking device, includes circuit breaker casing and handle, the handle has separating brake position and closing position on the circuit breaker casing, the handle is hollow structure, and its lateral part has the bar perforation that sets up along the handle direction of height, be equipped with in the handle but reciprocate the slider, rotatable setting are in the handle top and with slider screw-thread fit's regulating part and middle part pass through round pin axle and handle rotatable coupling's backstop piece, the backstop piece is located bar perforation department and on it with round pin axle complex hole is waist-shaped hole, the upper end of backstop piece with the slider is articulated, the backstop piece lower extreme has the backstop head, be equipped with on the circuit breaker casing in separating brake position department be suitable for with backstop head complex draw-in groove, through rotating the regulating part drives the slider reciprocates, and then drive the backstop piece is around the round pin axle rotates, makes the backstop head withdraw or stretch out the bar perforation, the handle is in the locked state, the backstop head by the perforation stretches out and the draw-in the draw-in groove.

In the above technical scheme, the number of the strip-shaped perforations is two, the strip-shaped perforations are respectively and correspondingly arranged at the left side part and the right side part of the handle, and the number of the stop pieces and the clamping grooves are correspondingly arranged at two.

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

The handle locking device has the advantages that the handle locking device is reasonable in structure, when the handle locking device is used, the handle is firstly turned to the opening position, then the sliding block is driven to move downwards through the rotation adjusting piece, the stop piece is driven to rotate around the pin shaft, the stop head extends outwards out of the strip-shaped through hole and is clamped into the clamping groove, locking of the handle at the opening position can be achieved, when the handle is unlocked, the reverse rotation adjusting piece drives the sliding block to move upwards, the stop piece is further rotated reversely around the pin shaft, the stop head is retracted inwards to the strip-shaped through hole, locking and unlocking operations are convenient, the structure is optimized and reasonable, additional carrying is not needed, and the handle locking device is good in practicability.

Drawings

FIG. 1 is a block diagram of a molded case circuit breaker handle locking apparatus in accordance with the present invention;

Fig. 2 is a view showing the internal structure of the handle according to the present invention.

The reference numerals in the figure are 1-breaker shell, 11-clamping groove, 2-handle, 21-bar perforation, 3-slide block, 4-adjusting piece, 5-stop piece, 51-waist-shaped hole, 52-stop head, 6-pin shaft and 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 accompanying drawings:

The utility model provides a moulded case circuit breaker handle locking device, shown in fig. 1 and 2, it includes circuit breaker casing 1 and handle 2, handle 2 has on circuit breaker casing 1 to break the floodgate position and the combined floodgate position, handle 2 is hollow structure, and its lateral part has the bar perforation 21 that sets up along handle 2 direction of height, be equipped with in the handle 2 but reciprocate slider 3, rotatable setting are in handle 2 top and with slider 3 screw-thread fit's regulating part 4 and the middle part pass through round pin axle 6 and handle 2 rotatable coupling's backstop piece 5, backstop piece 5 locates bar perforation 21 department and on with the hole of round pin axle 6 is waist type hole 51, the upper end of backstop piece 5 with slider 3 articulates, backstop piece 5 lower extreme has a stop head 52, be equipped with on circuit breaker casing 1 in break the floodgate position department be suitable for with backstop head 52 complex draw-in groove 11, through rotating regulating part 4 drives slider 3 reciprocates, and then drives backstop piece 5 is located round pin axle 6 the rotation, make the backstop piece 5 stretches out in when the state by the bar head 21 is gone into to the perforation 52. The handle locking device in this embodiment is rational in infrastructure, during the use, will handle 2 is wrenched to the brake position earlier, then drives through rotating regulating part 4 slider 3 moves down, and then drives backstop piece 5 is around round pin axle 6 rotates, and makes backstop head 52 outwards stretches out bar perforation 21, and block into in draw-in groove 11, so can realize the locking of handle in brake position, when releasing the handle lock, reverse rotation regulating part 4 drives slider 3 and upwards moves, and then backstop piece 5 is around round pin axle 6 reverse rotation makes backstop head 52 inwards retract bar perforation 21, locking and unblock convenient operation, and the structure is optimized rationally, need not to carry in addition, has fine practicality.

In this embodiment, the number of the strip-shaped perforations 21 is two, and the two strip-shaped perforations are respectively and correspondingly arranged at the left side and the right side of the handle 2, and the number of the stop pieces 5 and the number of the clamping grooves 11 are correspondingly arranged two, so that the locking effect is enhanced by the one-to-one corresponding clamping of the stop heads 52 on the two stop pieces 5 and the two clamping grooves 11.

In this embodiment, the adjusting member 4 is a bolt, the head of the bolt is located outside the top end of the handle 2, and the stem portion of the bolt is provided with a clamp spring 7 to limit the bolt axially. The stopper 5 is preferably made of stainless steel in this embodiment.

It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While those obvious variations or modifications which come within the spirit of the invention remain within the scope of the invention.

Claims

1. A handle locking device for a molded case circuit breaker, comprising a circuit breaker housing (1) and a handle (2), wherein the handle (2) has an opening position and a closing position on the circuit breaker housing (1), characterized in that the handle (2) is a hollow structure, and its side portion has a strip-shaped through hole (21) arranged along the height direction of the handle (2), and the handle (2) is provided with a slider (3) that can move up and down, an adjusting member (4) that can be rotatably arranged at the top of the handle (2) and is threadedly matched with the slider (3), and a stopper (5) that is rotatably connected to the handle (2) through a pin shaft (6) in the middle, the stopper (5) is arranged at the strip-shaped through hole (21) and the hole on the stopper (5) that is matched with the pin shaft (6) is a waist-shaped hole (51), and the upper end of the stopper (5) is connected to the handle (2). The slider (3) is hinged, and the lower end of the stopper (5) has a stopper head (52). A slot (11) suitable for cooperating with the stopper head (52) is provided on the circuit breaker housing (1) at the opening position. The slider (3) is driven to move up and down by rotating the adjusting member (4), thereby driving the stopper (5) to rotate around the pin shaft (6), so that the stopper head (52) retracts or extends out of the strip-shaped through hole (21). When the handle (2) is in a locked state, the stopper head (52) extends out of the strip-shaped through hole (21) and is inserted into the slot (11). The adjusting member (4) is a bolt, and the head of the bolt is located outside the top end of the handle (2). A retaining spring (7) is provided on the rod of the bolt to limit its axial position.

2. The handle locking device for a molded case circuit breaker according to claim 1 is characterized in that the number of the strip-shaped through holes (21) is two, which are respectively arranged on the left and right sides of the handle (2), and the number of the stopper (5) and the slot (11) is correspondingly set to two.