CN212062343U - Circuit breaker - Google Patents

Abstract

The utility model relates to a circuit breaker, which relates to the technical field of low-voltage electrical appliances and aims to solve the technical problem that the fixation between a wire and the circuit breaker is unstable; it includes the shell, is provided with the circuit breaker body in the shell, and the holding tank has respectively been seted up to the both sides of shell, is provided with the current conducting plate that is used for with circuit breaker body interconnect in the holding tank, perpendicular rigid coupling has a wrapping post on the current conducting plate, and it is connected with a clamp plate to slide on the wrapping post, and the one side that the clamp plate deviates from the current conducting plate is provided with a connecting piece, and the connecting piece includes the U template that the opening set up towards the clamp plate, and a fixed screw has been seted up to the holding tank to the both ends and the clamp plate rigid coupling of U template. The utility model discloses have the effect that improves circuit breaker and wire connection stability.

Description

Circuit breaker

Technical Field

The utility model belongs to the technical field of low-voltage apparatus's technique and specifically relates to a circuit breaker is related to.

Background

The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within a prescribed time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their range of use.

Chinese utility model patent publication No. CN205376440U discloses a circuit breaker, it includes operating device, monopole unit and electromagnetic short-circuit protection mechanism, wherein the moving contact linkage in operating device and each monopole unit is in order to realize the deciliter between the moving contact in each monopole unit and the static contact, and every monopole unit sets up with the cooperation of a corresponding electromagnetic short-circuit protection mechanism, and electromagnetic short-circuit protection mechanism includes: the iron core is arranged above a static contact in the monopole unit which is matched with the electromagnetic short-circuit protection mechanism; the lock catch braking device is arranged below the fixed contact and is hinged inside the single-pole unit through a shaft; an elastic element disposed between the latch actuator and the single-pole unit. And the static contact of the single unit is also connected with a conductive plate.

When the staff interconnects the current-conducting plate and the wire, firstly the screw is screwed into the current-conducting plate, the sheath of the wire is stripped and wound between the head of the screw and the current-conducting plate, and the wire is clamped and fixed through the thread fit between the screw and the current-conducting plate. However, the contact area between the head of the screw and the lead is small, so that the stability of fixation between the lead and the current-conducting plate is affected, and the lead and the circuit breaker are unstable in fixation, so that poor contact between the lead and the current-conducting plate is easily caused, and then a large amount of heat is generated between the lead and the current-conducting plate, so that the potential safety hazard of fire is generated.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a circuit breaker, it has the effect that improves circuit breaker and wire connection stability.

The above object of the present invention can be achieved by the following technical solutions:

the utility model provides a circuit breaker, includes the shell, is provided with the circuit breaker body in the shell, and the holding tank has respectively been seted up to the both sides of shell, is provided with the current conducting plate that is used for with circuit breaker body interconnect in the holding tank, perpendicular rigid coupling has a wrapping post on the current conducting plate, and it is connected with a clamp plate to slide on the wrapping post, and the one side that the clamp plate deviates from the current conducting plate is provided with a connecting piece, and the connecting piece includes the U template that the opening set up towards the clamp plate, and a fixed screw has been seted up to the holding tank to the both ends and the clamp plate rigid.

Through adopting above-mentioned technical scheme, when the staff with wire and conducting plate interconnect, at first peel off the insulating crust of the part that the wire is close to the tip, then will peel off the sinle silk behind the insulating crust and insert into the holding tank and make the sinle silk be located between conducting plate and the clamp plate by the opening part of holding tank in, then the staff revolves the jackscrew soon to press and move the clamp plate, the cooperation conducting plate is fixed with the wire centre gripping. The setting up of clamp plate has increased the area of contact with the wire to improved the stability fixed to the wire extrusion, reduced because the screw head area is less, thereby the head that leads to the screw is to the fixed unstable condition of wire.

The present invention may be further configured in a preferred embodiment as: the holding tank lateral wall is fixedly connected with a clamping strip, the length direction of the clamping strip is parallel to the axis of the wrapping post, and a clamping groove for holding the clamping strip is formed in the lateral wall of the corresponding pressing plate.

By adopting the technical scheme, when the pressing plate slides along the length direction of the winding post, the clamping strip slides in the clamping groove, and the rotation of the pressing plate around the winding post is limited through mutual clamping of the clamping strip and the side wall of the clamping groove, so that the stability of the pressing plate for fixing the lead is improved; the situation that the fixing stability of the pressing plate on the lead is influenced due to the fact that the pressing plate rotates along with the lead when the lead is pulled is reduced.

The present invention may be further configured in a preferred embodiment as: one side of the pressing plate facing the current conducting plate is fixedly connected with a plurality of anti-skidding teeth, and the anti-skidding teeth are circumferentially distributed on the pressing plate by using the axis of the winding post.

Through adopting above-mentioned technical scheme, the setting of antiskid tooth when the clamp plate extrusion wire, has increased the frictional force between clamp plate and the wire, and then has improved the stability that the clamp plate is fixed to the wire.

The present invention may be further configured in a preferred embodiment as: one side of the pressing plate facing the current-conducting plate is fixedly connected with a compression spring, one end of the compression spring is abutted to the pressing plate, and the other end of the compression spring is abutted to the side wall of the accommodating groove.

Through adopting above-mentioned technical scheme, compression spring's elastic force pushes up the clamp plate from the current conducting plate to made things convenient for the wire to insert into between clamp plate and the current conducting plate, improved the convenience of staff's construction.

The present invention may be further configured in a preferred embodiment as: one side of the current-conducting plate towards the pressure plate is provided with a circular arc-shaped guide plate, and the corresponding pressure plate is provided with a yielding hole for yielding the guide plate.

Through adopting above-mentioned technical scheme, when the clamp plate moved to the direction pressure of conducting plate, the conducting plate was kept away from to the deflector one end card income let the downthehole to make the clamp plate not influence the normal work of deflector. The setting of deflector, inside inserting into the holding tank when the wire from the opening part of holding tank, the tip of wire is contradicted on the deflector to guide effect through the deflector encircles on the periphery of spool, thereby has increased the area that the wire was fixed, has improved the fixed stability of wire.

The present invention may be further configured in a preferred embodiment as: the opening part rigid coupling of holding tank has the guard plate, and the guard plate is provided with two and two guard plate parallel arrangement each other.

Through adopting above-mentioned technical scheme, the setting of guard plate for the wire can be the vertically insert into the holding tank in, and the guard plate has reduced the excessive bending of wire in holding tank port department, has protected the wire. When the insulating sheath of wire strips for the overlength, the guard plate can protect the wire, and then has reduced because the wire inner core exposes outside, causes the dangerous condition.

The present invention may be further configured in a preferred embodiment as: the plane of one of the protection plates is tangent to the cambered surface of the guide plate, and the distance between the two protection plates is smaller than the curvature radius of the guide plate.

Through adopting above-mentioned technical scheme, the wire can follow and insert into in the holding tank between two guard plates to make the wire can be more accurate insert into in the holding tank and guided and then crooked and encircle the outside at the wrapping post by the deflector.

The present invention may be further configured in a preferred embodiment as: and the edge of the fixed screw hole is provided with an embedded groove for accommodating the head of the jackscrew.

Through adopting above-mentioned technical scheme, in the jackscrew screw thread screw in advance the set screw and fix the back with the wire, the head embedding of jackscrew advances in the caulking groove to improved the wholeness of circuit breaker, and protected the jackscrew, thereby reduced because the outside is hung and is rubbed the influence jackscrew and to the fixed stable condition of wire.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the stability of the connection between the wire and the breaker is improved, and the arrangement of the pressing plate enables the pressing plate to be matched with the current conducting plate to clamp and fix the wire, so that the phenomenon that the wire is loosened from the breaker is reduced;

2. the convenience that the staff wore to establish the wire is improved, compression spring's setting for the clamp plate is not receiving the jackscrew top and is held the time, leaves certain space between clamp plate and the jackscrew, and then has made things convenient for the wire to penetrate between clamp plate and the current conducting plate.

Drawings

Fig. 1 is a schematic view of the overall structure of a circuit breaker;

FIG. 2 is a schematic view showing an inner structure of the accommodating groove after a part of the housing is cut away and the protection plate is omitted;

FIG. 3 is an enlarged view of detail A of FIG. 2 and shows a schematic view of the connection plates and the pressure plates;

FIG. 4 is a schematic view showing the structure of a platen;

fig. 5 is a schematic structural view showing the installation position of the shielding plate.

In the figure, 1, a housing; 11. an upper shell; 111. fixing screw holes; 112. caulking grooves; 12. a lower case; 13. a circuit breaker body; 131. a control lever; 14. accommodating grooves; 141. clamping the strip; 2. a conductive plate; 21. a winding post; 22. pressing a plate; 23. a connecting member; 24. a U-shaped plate; 25. folding edges; 26. carrying out top thread; 27. a card slot; 3. anti-slip teeth; 4. a compression spring; 5. a guide plate; 51. a hole of abdication; 6. and (4) a protective plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a circuit breaker, including shell 1, shell 1 includes the epitheca 11 and the inferior valve 12 of mutual lock, is provided with circuit breaker body 13 in the shell 1, and circuit breaker body 13 includes operating device, single-stage unit, electromagnetic type short-circuit protection mechanism. And two sides of the single-stage unit are respectively fixedly connected with a conductive plate 2 which is used for being connected with the lead. For convenient operation, the circuit breakers are usually composed of several parallel-connected circuit breakers, and the on/off of the circuit breaker operating mechanisms are controlled simultaneously by a control rod 131.

As shown in fig. 2 and 3, an accommodating groove 14 is formed in a side wall of the outer case 1, the opening of the accommodating groove 14 is away from the circuit breaker body 13, and a side wall of the accommodating groove 14 facing the upper case 11 is flush with a surface of the lower case 12 facing the upper case 11. So that the receiving groove 14 and the upper case 11 communicate with each other. The current conducting plate 2 is located holding tank 14 and perpendicular rigid coupling has a wrapping post 21 on the current conducting plate 2, the cover is equipped with a clamp plate 22 on the wrapping post 21, clamp plate 22 slides along wrapping post 21's axial, clamp plate 22 deviates from one side rigid coupling of current conducting plate 2 has a connecting piece 23, connecting piece 23 includes the U template 24 that the opening set up towards clamp plate 22, the book of turning over that each carried on the back in the both ends of U template 24 has a hem 25, hem 25 and the mutual rigid coupling of clamp plate 22, upper shell 11 has a fixed screw 111 to having seted up in the holding tank 14, fixed screw 111 interior screw-thread fit has a jackscrew 26, the tip top of jackscrew 26 touches on the connecting. The winding post 21 and the fixing screw hole 111 are coaxially disposed. When the pressing plate 22 and the conductive plate 2 are abutted against each other, the bottom wall of the U-shaped plate 24 and one end of the winding leg 21 away from the conductive plate 2 are abutted against each other. The caulking groove 112 that is used for holding jackscrew 26 head is still seted up to the outer border department of fixed screw 111, and when jackscrew 26 screw thread screw in fixed screw 111 and with the fixed back of wire, the head embedding of jackscrew 26 is gone into in the caulking groove 112 to the wholeness of circuit breaker has been improved, and protected jackscrew 26, thereby reduced because the outside condition of influencing jackscrew 26 to wire fixation stability of hanging the twitching.

When the staff interconnect wire and current conducting plate 2, at first with the wire near the insulating crust of a part of tip peel off, then will peel off the sinle silk behind the insulating crust and insert into holding tank 14 and make the sinle silk be located between current conducting plate 2 and clamp plate 22 by the opening part of holding tank 14, then the staff revolves jackscrew 26 soon, and presses clamp plate 22, cooperates current conducting plate 2 to fix the wire centre gripping. The pressing plate 22 increases the contact area with the lead, so that the stability of extruding and fixing the lead is improved, and the situation that the head of the screw is unstable in fixing the lead due to the fact that the head area of the screw is small is reduced. Connecting piece 23 sets up, provides the space of sliding for clamp plate 22 on the one hand, and on the other hand jackscrew 26 pushes up and touches on the surface of U template 24, pushes up the more even distribution of pressure that touches of jackscrew 26 through U template 24 on clamp plate 22 surface, and then makes clamp plate 22 atress more even, has improved the stability fixed to the wire.

As shown in fig. 2 and fig. 3, two side walls of the accommodating groove 14 perpendicular to the opening are respectively and fixedly connected with a clip strip 141, and a length direction of the clip strip 141 is parallel to an axis of the winding post 21. The side wall of the corresponding pressing plate 22 is provided with a clamping groove 27 which is matched with the clamping strip 141 for clamping. When the pressing plate 22 slides along the length direction of the winding post 21, the clamping strip 141 slides in the clamping groove 27, and the pressing plate 22 is limited to rotate around the winding post 21 through mutual clamping of the clamping strip 141 and the side wall of the clamping groove 27, so that the stability of fixing the lead is improved; the situation that when the lead is pulled, the fixing stability of the lead by the pressing plate 22 is influenced because the pressing plate 22 rotates along with the pulling of the lead is reduced. One side rigid coupling of clamp plate 22 towards current conducting plate 2 has a plurality of anti-skidding teeth 3 (here as shown in figure 4), and a plurality of anti-skidding teeth 3 use the axis of wrapping post 21 as the axle, are the circumference and evenly arrange on clamp plate 22, and the setting of anti-skidding tooth 3 has increased the frictional force between clamp plate 22 and the wire when clamp plate 22 extrudees the wire, and then has improved clamp plate 22 to the fixed stability of wire. In order to insert the wire into between clamp plate 22 and the current conducting plate 2 for convenience, clamp plate 22 has compression spring 4 towards the one side rigid coupling of current conducting plate 2, compression spring 4 is provided with four and is located four edges of clamp plate 22 respectively, compression spring 4's the other end is contradicted on the lateral wall of holding tank 14, elastic force through compression spring 4 pushes up clamp plate 22 from current conducting plate 2, thereby made things convenient for the wire to insert into between clamp plate 22 and the current conducting plate 2, the convenience of staff's construction has been improved.

As shown in fig. 1 and 5, a guide plate 5 is further disposed in the accommodating groove 14, and the guide plate 5 is fixedly connected to the conductive plate 2. Guide plate 5 is with semicircular arc to the concave surface of guide plate 5 sets up towards holding tank 14 opening, and the camber centre of a circle of guide plate 5 is located the axis of wrapping post 21, and the radius of curvature of guide plate 5 is perpendicular to the axis setting of wrapping post 21. Set up on the corresponding clamp plate 22 and carry out the hole 51 of stepping down that steps down to deflector 5, when clamp plate 22 pressed towards the direction of conducting plate 2, the one end card that conducting plate 2 was kept away from to deflector 5 went into in the hole 51 of stepping down to make clamp plate 22 not influence the normal work of deflector 5. The guide plate 5 is arranged, when the wire is inserted into the accommodating groove 14 from the opening of the accommodating groove 14, the end part of the wire is abutted against the guide plate 5 and surrounds the outer peripheral surface of the winding shaft through the guiding effect of the guide plate 5, so that the length of the fixed wire is increased, and the stability of the fixed wire is improved. The lateral wall of lower casing 12 is perpendicular to be connected firmly and has the guard plate 6, and the guard plate 6 is parallel to each other be provided with two, and guard plate 6 is located the opening part of holding tank 14 and one of them guard plate 6 place plane and deflector 5 place circular arc tangent. The distance between the two shielding plates 6 is smaller than the radius of curvature of the guide plate 5. The wire can be inserted into the receiving groove 14 from between the two shielding plates 6 so that the wire can be more accurately inserted into the receiving groove 14 and guided by the guide plate 5 to be bent and wound around the outside of the winding post 21. Due to the arrangement of the protection plate 6, the lead can be vertically inserted into the accommodating groove 14, excessive bending of the lead at the port of the accommodating groove 14 is reduced by the protection plate 6, and the lead is protected. When the insulating sheath of wire strips for too long, guard plate 6 can protect the wire, and then has reduced because the wire inner core exposes outside, causes the dangerous condition.

The implementation principle of the embodiment is as follows: when the staff interconnects the wire and the circuit breaker, firstly the insulating sheath near the end of the wire is stripped, then the wire is inserted into the accommodating groove 14 between the two protection plates 6, the wire is guided by the guide plate 5 and then surrounds the winding post 21, and finally the staff screws the jackscrew 26, so that the pressing plate 22 presses on the surface of the wire guide plate, and the wire is fixed.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. The utility model provides a circuit breaker, includes shell (1), is provided with circuit breaker body (13) in shell (1), and holding tank (14) have respectively been seted up to the both sides of shell (1), is provided with in holding tank (14) and is used for the current conducting plate (2) with circuit breaker body (13) interconnect, its characterized in that: perpendicular rigid coupling has a wrapping post (21) on current conducting plate (2), sliding connection has a clamp plate (22) on wrapping post (21), one side that clamp plate (22) deviates from current conducting plate (2) is provided with a connecting piece (23), U template (24) that connecting piece (23) set up including the opening towards clamp plate (22), the both ends and clamp plate (22) rigid coupling of U template (24), shell (1) has seted up a fixed screw (111) to holding tank (14), fixed screw (111) interior screw-thread fit has tip top and touches jackscrew (26) of U template (24).

2. A circuit breaker according to claim 1, wherein: card strip (141) are fixedly connected to the side wall of accommodating groove (14), the length direction of card strip (141) is parallel to the axis of wrapping post (21), and a clamping groove (27) for accommodating card strip (141) is formed in the side wall of corresponding pressing plate (22).

3. A circuit breaker according to claim 2, wherein: one side of the pressing plate (22) facing the conductive plate (2) is fixedly connected with a plurality of anti-skidding teeth (3), and the anti-skidding teeth (3) are circumferentially distributed on the pressing plate (22) by the axis of the winding post (21).

4. A circuit breaker according to claim 2, wherein: one side of the pressing plate (22) facing the conducting plate (2) is fixedly connected with a compression spring (4), one end of the compression spring (4) abuts against the pressing plate (22), and the other end of the compression spring abuts against the side wall of the accommodating groove (14).

5. A circuit breaker according to claim 3, wherein: one side of the conductive plate (2) facing the pressing plate (22) is provided with a circular arc-shaped guide plate (5), and a yielding hole (51) for yielding the guide plate (5) is formed in the corresponding pressing plate (22).

6. A circuit breaker according to claim 5, wherein: the opening part rigid coupling of holding tank (14) has guard plate (6), and guard plate (6) are provided with two and two guard plate (6) parallel arrangement each other.

7. A circuit breaker according to claim 6, wherein: the plane of one of the protection plates (6) is tangent to the cambered surface of the guide plate (5), and the distance between the two protection plates (6) is smaller than the curvature radius of the guide plate (5).

8. A circuit breaker according to claim 1, wherein: the edge of the fixing screw hole (111) is provided with an embedded groove (112) for accommodating the head of the jackscrew (26) to be embedded.

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