CN209747371U - Circuit breaker safety lock - Google Patents

Abstract

The utility model discloses a circuit breaker safety lock, relate to the circuit breaker field, be equipped with a control assembly in the base of this circuit breaker, this control assembly includes a trip component, this trip component has a connecting rod, this circuit breaker safety lock has a lock solid body and a locating part, this locating part is equipped with a locating part, this locating part has the oblique locating surface that a horizontal location face and this horizontal location face slope of a relative meet, locating part rotates along with the rotation of lock solid body in step, with selectively make horizontal location face or oblique locating surface push down the connecting rod, horizontal location face pushes down the connecting rod when the lock solid body is in the shutting state, so that the control assembly with the connecting rod linkage is locked, thereby make the circuit breaker keep the state of opening circuit. The utility model provides a circuit breaker safety lock is with the function that reaches power-off protection with the spinning mode, can realize circuit breaker mechanism locking protect function in very little space, reaches the effect of safe power consumption.

Description

Circuit breaker safety lock

Technical Field

The utility model relates to a circuit breaker field especially relates to a circuit breaker safety lock.

Background

The breaker is an important element of a protection circuit, and mainly has the functions of short-circuit protection and current overload prevention, and when the breaker detects problems of short circuit, electric leakage, serious overload and the like, the breaker can be immediately tripped to protect a line and an electric appliance. When the electric wire equipment overhauls the operation, the circuit breaker is in the off-state, if do not have locking device, maintenance personal probably keeps away from the circuit breaker and makes the line inspection at a distance, if when having the unknowns and pull back the ON-state (ON) with the circuit breaker switch, will produce very big danger to maintenance personal, consequently is very necessary at the safe locking device of circuit breaker.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a circuit breaker safety lock utilizes this circuit breaker safety lock can keep the circuit breaker in the state of tripping.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

A safety lock for circuit breaker is composed of a top cover and a base, a control unit installed in the base and consisting of a jump-out element with a connecting rod, a locking body with a horizontal locating surface and an oblique locating surface, and a locating part with a horizontal locating surface and an oblique locating surface, which are obliquely connected to said horizontal locating surface, an unlocking state and a locking state, and a locking state for switching between them, so that the control assembly, which is interlocked with the connection rod, is locked, thereby maintaining the circuit breaker in the open state.

Furthermore, the circuit breaker safety lock is assembled in the circuit breaker through a cover plate, the cover plate is provided with a mounting hole matched with the locking body, the locking body penetrates through the mounting hole, the upper end of the locking body extends along the circumferential direction to form a convex ring, the outer diameter of the convex ring is larger than the aperture of the mounting hole, and the lower surface of the convex ring is abutted to the upper surface of the cover plate.

furthermore, the positioning element is connected to the lower end of the locking body through a screw, and the positioning part is abutted against the connecting rod, so that the locking body is clamped by the connecting rod and the cover plate.

furthermore, the locking body is provided with a limiting protrusion along the circumferential direction, the cover plate is provided with a limiting groove matched with the limiting protrusion, and the limiting protrusion is accommodated in the limiting groove to prevent the locking body from rotating relative to the cover plate.

Furthermore, the cover plate is combined with the circuit breaker through a shaft and a screw.

compared with the prior art, the utility model has the advantages of it is following:

The utility model provides a circuit breaker safety lock is with the function that the spinning mode reaches power-off protection, can realize circuit breaker mechanism locking protect function in very little space, reaches the effect of safe power consumption, and the circuit breaker structure need not to change, can install the safety lock additional with the accessory mode, and the customer can reequip by oneself, also can install additional by the mill. Utilize the utility model provides a safety lock can avoid the personnel of not knowing to carry out improper operation to the circuit breaker to guarantee maintenance personal work safety.

Drawings

FIG. 1 is a schematic diagram of the mating of a circuit breaker safety lock and trip element;

FIG. 2 is a schematic perspective view of a circuit breaker safety lock;

FIG. 3 is an exploded view of the safety lock of the circuit breaker;

Fig. 4 is a schematic perspective view of a circuit breaker with an assembled circuit breaker safety lock;

Figure 5 is an exploded view of the circuit breaker of figure 4;

FIG. 6 is an assembly view of the cover plate and the safety lock of the circuit breaker;

FIG. 7 is a schematic perspective view of a cover plate;

Fig. 8 is an exploded perspective view of another circuit breaker with an assembled circuit breaker safety lock.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

referring to fig. 1 to 5, a safety lock 3 for a circuit breaker is applied to a circuit breaker, the circuit breaker includes an upper cover 1 and a base 2 assembled and fixed to each other, a control assembly is installed in the base 2, the control assembly includes a trip element 21, the trip element 21 has a connecting rod 211, the safety lock 3 for the circuit breaker has a locking body 31 and a positioning element 32, the locking body 31 is assembled in the upper cover 1 of the circuit breaker and exposed outside the upper cover 1, the lower end of the locking body is located in the base 2 of the circuit breaker and assembled to the positioning element 32, the positioning element 32 has a positioning portion 321, the positioning portion 321 has a horizontal positioning surface 3211 and an inclined positioning surface 3212 inclined to the horizontal positioning surface 3211, the locking body 31 has an unlocking state and a locking state and is switched by rotation, the positioning element 32 rotates synchronously with the rotation of the locking body 31, so as to selectively make horizontal positioning surface 3211 or oblique positioning surface 3212 push down connecting rod 211, when locking the body 31 and being in the latched state, horizontal positioning surface 3211 pushes down connecting rod 211, so that the control assembly linked with connecting rod 211 is locked, thereby making the circuit breaker keep the open circuit state.

The internal elements of the circuit breaker do not need to be changed, the circuit breaker safety lock 3 can be installed on the upper cover 1 of the modified circuit breaker, and the circuit breaker safety lock 3 can be assembled in the circuit breaker through a cover plate 4. Fig. 6 to 8 show a circuit breaker with a cover plate 4 fitted with a circuit breaker safety lock 3, the circuit breaker having a control assembly comprising a trip element 21, the trip element 21 having a connecting rod 211. The cover plate 4 is provided with a mounting hole 41 matched with the locking body 31, the locking body 31 is inserted into the mounting hole 41, the upper end of the locking body 31 extends along the circumferential direction to form a convex ring 311, the outer diameter of the convex ring 311 is larger than the aperture of the mounting hole 41, and the lower surface of the convex ring 311 abuts against the upper surface of the cover plate 4.

after the upper end of the locking body 31 is combined with the cover plate 4, the positioning element 32 is connected to the lower end of the locking body 31 through the screw 6 to combine the positioning element 32 with the locking body 31. The breaker safety lock 3 is assembled to the breaker by the cover plate 4, and the positioning portion 321 abuts against the connecting rod 211, so that the locking body 31 is clamped by the connecting rod 211 and the cover plate 4.

the locking body 31 is circumferentially provided with a limiting protrusion 312, the cover plate 4 is provided with a limiting groove 42 matched with the limiting protrusion 312, and the limiting protrusion 312 is accommodated in the limiting groove 42 to prevent the locking body 31 from rotating relative to the cover plate 4. The cover plate 4 is coupled to the circuit breaker by means of a shaft 5 and a screw 6.

When the locking body 31 is in the unlocking state, the connecting rod 211 abuts against the inclined positioning surface 3212, and in the process of switching the locking body 31 from the unlocking state to the locking state, the connecting rod 211 is gradually pressed down due to the height change of the inclined positioning surface 3212, so as to drive the trip element 21 to trip. When the locking body 31 is in the locked state, the horizontal positioning surface 3211 presses the connecting rod 211, so that the circuit breaker is kept in the trip state and cannot be put into use, thereby achieving the power-off protection function.

The existing breaker safety lock 3 is used for powering off the breaker in a pushing mode, a pulling mode and the like, and the breaker safety lock has to be additionally installed and produced by a factory. The circuit breaker safety lock 3 that this embodiment provided reaches the function of power-off protection with the spinning mode, and the circuit breaker structure need not to change, can install apron 4 and circuit breaker safety lock 3 additional with the accessory mode, can reequip by oneself after the customer purchases, also can install additional by the mill.

The above description is only an embodiment utilizing the technical content of the present disclosure, and any modification and variation made by those skilled in the art can be covered by the claims of the present disclosure, and not limited to the embodiments disclosed.

Claims (5)

1. The utility model provides a circuit breaker safety lock, is applied to the circuit breaker, and this circuit breaker includes fixed upper cover of mutual equipment and base, and the dress is equipped with a control assembly in the base, and this control assembly contains a trip component, and this trip component has a connecting rod, the characterized in that of this circuit breaker safety lock: the circuit breaker is provided with a locking body and a positioning element, the upper end of the locking body is assembled in an upper cover of the circuit breaker and exposed outside the upper cover, the lower end of the locking body is positioned in a base of the circuit breaker and matched with the positioning element, the positioning element is provided with a positioning part, the positioning part is provided with a horizontal positioning surface and an inclined positioning surface which is obliquely connected with the horizontal positioning surface, the locking body has an unlocking state and a locking state and realizes switching through rotation, the positioning element synchronously rotates along with the rotation of the locking body so as to selectively enable the horizontal positioning surface or the inclined positioning surface to press down a connecting rod, and the horizontal positioning surface presses down the connecting rod when the locking body is in the locking state so as to lock a control assembly linked with the connecting rod, so that the circuit breaker keeps a circuit breaking state.

2. A circuit breaker safety lock according to claim 1, wherein: the circuit breaker safety lock is assembled in the circuit breaker through a cover plate, the cover plate is provided with a mounting hole matched with the locking body, the locking body penetrates through the mounting hole, the upper end of the locking body extends along the circumferential direction to form a convex ring, the outer diameter of the convex ring is larger than the aperture of the mounting hole, and the lower surface of the convex ring abuts against the upper surface of the cover plate.

3. a circuit breaker safety lock according to claim 2, wherein: the positioning element is connected to the lower end of the locking body through a screw, and the positioning part is abutted against the connecting rod, so that the locking body is clamped by the connecting rod and the cover plate.

4. a circuit breaker safety lock according to claim 2, wherein: the locking body is provided with a limiting bulge along the circumferential direction, the cover plate is provided with a limiting groove matched with the limiting bulge, and the limiting bulge is accommodated in the limiting groove to prevent the locking body from rotating relative to the cover plate.

5. A circuit breaker safety lock according to claim 2, wherein: the cover plate is combined with the circuit breaker through a shaft and a screw.