CN216928437U

CN216928437U - Moulded case circuit breaker with contact not easy to fall off

Info

Publication number: CN216928437U
Application number: CN202220700139.7U
Authority: CN
Inventors: 刘春雨
Original assignee: Jinyuan Lifeng Tianjin Industrial Control System Co ltd
Current assignee: Jinyuan Lifeng Tianjin Industrial Control System Co ltd
Priority date: 2022-03-29
Filing date: 2022-03-29
Publication date: 2022-07-08
Anticipated expiration: 2032-03-29

Abstract

The utility model relates to the technical field of circuit breakers and discloses a plastic case circuit breaker with a contact difficult to fall off, which comprises a frame, wherein a placing groove is formed in the frame, a contact is fixedly connected to the side wall at the top end of the placing groove, a movable groove is formed in the side surface, close to the placing groove, of the frame, a screw rod is in threaded connection with the inside of the movable groove, a pressing block is rotatably connected to one end, close to the movable groove, of the screw rod, a sliding groove is formed in the side surface, close to the movable groove, of the frame, a sliding rail is formed in one end, far away from the movable groove, of the sliding groove, a wedge-shaped block is in sliding connection with the inside of the sliding rail, the electric wire entering the placing groove is pressed through the pressing block, the end part of the electric wire is in contact with the contact, and the two sides of the electric wire are clamped through the clamping block, so that the clamping area of the electric wire can be enhanced, and the stability of the electric wire in contact with the contact is improved, the contact is prevented from falling off.

Description

Moulded case circuit breaker with contact not easy to fall off

Technical Field

The utility model relates to the technical field of circuit breakers, in particular to a molded case circuit breaker with a contact not easy to fall off.

Background

The circuit breaker can control indoor being connected with circuit and power, and can be in time when indoor circuit breaks down and open circuit, has improved indoor circuit's stability.

However, when the existing circuit breaker is connected with an electric wire, the electric wire and the contact can be connected only in a bolt extrusion mode, and the electric wire is easy to separate from the contact under the action of external force, so that the line connection is unstable.

When the wire is connected, the wire is additionally clamped and fastened while being extruded and fixed by the screw, so that the contact area of the clamping mechanism and the wire is increased, and the stability of the wire in contact with a contact is improved.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides the molded case circuit breaker with the contact terminal not easy to fall off, which has the advantages of increasing the contact area between the clamping mechanism and the electric wire, improving the stability of the electric wire in contact with the contact point and the like, and solves the problem that the electric wire is easy to separate from the contact point under the action of external force to cause unstable line connection.

(II) technical scheme

In order to increase the contact area between the clamping mechanism and the electric wire and improve the stability of the electric wire in contact with the contact, the utility model provides the following technical scheme: a molded case circuit breaker with a contact not easy to fall off comprises a frame, wherein a placing groove is arranged inside the frame, the side wall at the top end of the placing groove is fixedly connected with a contact, the bottom of the inner wall of the frame is provided with a movable groove, a screw rod is connected with the inner thread of the movable groove, one end of the screw rod close to the movable groove is rotationally connected with a pressing block, the inner wall of the frame is positioned at the right upper part of the movable groove and is provided with a sliding groove, one end of the sliding groove far away from the movable groove is provided with a sliding rail, a wedge-shaped block is connected inside the slide rail in a sliding way, the center of one side of the wedge-shaped block, which is close to the bottom of the slide rail, is fixedly connected with a spring air bag, the edge of one side of the wedge-shaped block close to the bottom of the slide rail is fixedly connected with an ejection spring, one side of the spring air bag far away from the wedge-shaped block is provided with an air pipe, one end of the air pipe, far away from the spring air bag, is fixedly connected with an elastic bag, and one end of the elastic bag, far away from the air pipe, is fixedly connected with a clamping block.

Preferably, the placing groove is a groove perpendicular to the ground, the movable groove is a groove horizontal to the ground, and the placing groove is communicated with the movable groove, so that the electric wire placed in the placing groove can be pressed on the surface of the contact by the pressing block sliding in the movable groove, and the connection of the circuit is realized.

Preferably, the briquetting is T type piece, and the briquetting is close to the width of screw rod one end and is greater than the one end of keeping away from the screw rod for the bottom of briquetting can slide in the inside of spout, and the top of briquetting can slide into the inside of standing groove, and compress tightly the electric wire.

Preferably, briquetting sliding connection is in the inside of spout, one side of wedge hypotenuse is towards the briquetting for can press the wedge when the briquetting slides, make the wedge to the inside motion of slide rail.

Preferably, the slide rail is horizontal with ground, and with spout mutually perpendicular, both communicate each other for the wedge can stretch out the inside that the slide rail got into the spout.

Preferably, the spring air bag is communicated with the air pipe, the elastic air bag is communicated with the air pipe, and the elastic air bag is a hollow closed cavity made of rubber, so that air inside the spring air bag can enter the elastic air bag when being extruded.

Preferably, the rack is close to the inside square groove of having seted up of lateral wall of standing groove, and the square groove is on the same horizontal plane with the activity groove, and both mutually perpendicular, press from both sides tight piece sliding connection in the inside of square groove, press from both sides tight piece and can press from both sides the tight electric wire that gets into the standing groove inside, improved the stability when electric wire is connected with the contact.

(III) advantageous effects

Compared with the prior art, the utility model provides the molded case circuit breaker with the contact not easy to fall off, and the molded case circuit breaker has the following beneficial effects:

this moulded case circuit breaker that contact is difficult for droing can drive the briquetting through the rotation of screw rod and compress tightly the inside electric wire that gets into the standing groove, and the tip and the contact of electric wire contact each other this moment, and crowd the inside of going into elasticity bag through the inside air of spring gasbag for press from both sides tight piece and press from both sides the both sides of electric wire tightly, thereby reached and to strengthen the centre gripping area to the electric wire, stability when having improved the electric wire and having contacted, the effect of avoiding the contact to drop.

Drawings

Fig. 1 is a schematic front perspective view of the circuit breaker of the present invention;

FIG. 2 is a cross-sectional view of the contact portion of the circuit breaker of the present invention;

FIG. 3 is an enlarged view of the structure at A of FIG. 2 according to the present invention;

FIG. 4 is a schematic view of the screw of the present invention.

In the figure: 1. a frame; 2. a placement groove; 3. a contact; 4. a movable groove; 5. a screw; 6. briquetting; 7. a chute; 8. a slide rail; 9. a wedge block; 10. a spring air bag; 11. ejecting a spring; 12. an air tube; 13. an elastic bag; 14. and (5) clamping the blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a molded case circuit breaker with a contact not prone to falling off includes a frame 1, a placement groove 2 is formed in the frame 1, a contact 3 is fixedly connected to a side wall of the top end of the placement groove 2, a movable groove 4 is formed in the bottom of an inner wall of the frame 1, the placement groove 2 is a groove perpendicular to the ground, the movable groove 4 is a groove horizontal to the ground, the placement groove 2 is communicated with the movable groove 4, so that an electric wire placed in the placement groove 2 can be pressed on the surface of the contact 3 by a pressing block 6 sliding in the movable groove 4, and connection of a circuit is achieved.

Referring to fig. 2-4, a screw rod 5 is connected to the inner thread of the movable groove 4, a pressing block 6 is rotatably connected to one end of the screw rod 5 close to the movable groove 4, a sliding groove 7 is formed in the upper right of the movable groove 4 on the inner wall of the rack 1, the pressing block 6 is a T-shaped block, and the width of one end of the pressing block 6 close to the screw rod 5 is larger than that of one end of the pressing block 6 far away from the screw rod 5, so that the bottom of the pressing block 6 can slide in the sliding groove 7, and the top end of the pressing block 6 can slide into the placing groove 2 and press the electric wire tightly.

Referring to fig. 2-3, a slide rail 8 is disposed at an end of the sliding groove 7, which is away from the movable groove 4, a wedge 9 is slidably connected inside the slide rail 8, the pressing block 6 is slidably connected inside the sliding groove 7, one side of an oblique edge of the wedge 9 faces the pressing block 6, so that the pressing block 6 can press the wedge 9 when sliding, the wedge 9 moves towards the inside of the slide rail 8, the slide rail 8 is horizontal to the ground and perpendicular to the sliding groove 7, and the slide rail 8 and the slide rail 7 are communicated with each other, so that the wedge 9 can extend out of the slide rail 8 and enter the inside of the sliding groove 7.

Referring to fig. 2-3, a spring airbag 10 is fixedly connected to a center of one side of the wedge 9 close to the bottom of the slide rail 8, an ejection spring 11 is fixedly connected to an edge of one side of the wedge 9 close to the bottom of the slide rail 8, an air pipe 12 is disposed on one side of the spring airbag 10 away from the wedge 9, an elastic airbag 13 is fixedly connected to one end of the air pipe 12 away from the spring airbag 10, the spring airbag 10 is communicated with the air pipe 12, the elastic airbag 13 is communicated with the air pipe 12, and the elastic airbag 13 is a hollow sealed cavity made of rubber, so that air inside the spring airbag 10 can enter the elastic airbag 13 when being extruded.

Referring to fig. 2, one end of the elastic bag 13, which is far away from the air tube 12, is fixedly connected with a clamping block 14, a square groove is formed inside a side wall of the rack 1, which is close to the placing groove 2, the square groove and the movable groove 4 are on the same horizontal plane and are perpendicular to each other, the clamping block 14 is slidably connected inside the square groove, the clamping block 14 can clamp an electric wire entering the placing groove 2, and stability of the electric wire when the electric wire is connected with the contact 3 is improved.

When in use, one end of the electric wire is placed in the placing groove 2, the screw rod 5 is rotated at the moment, so that the screw rod 5 moves towards the inside of the movable groove 4, the pressing block 6 at the end part of the screw rod 5 can press the electric wire entering the placing groove 2, so that the electric wire is contacted with the contact 3, when the pressing block 6 slides to the other end of the sliding chute 7, the wedge block 9 extending into the sliding chute 7 can be pressed, at the moment, the wedge block 9 extends into the sliding rail 8, at the moment, the wedge block 9 presses the spring air bag 10 against the elastic force of the ejection spring 11, air in the spring airbag 10 enters the elastic airbag 13 through the air pipe 12, the elastic airbag 13 expands to push the clamping block 14 out of the square groove, and the clamping block 14 clamps two sides of the electric wire, so that the contact area of the electric wire is increased, and the problem that the electric wire is easy to separate from the contact 3 is solved;

when the electric wire needs to be taken out, the screw rod 5 is rotated, the pressing block 6 slides to the outer side of the movable groove 4, the pressing block 6 is separated from the electric wire at the moment, the pressing block 6 does not press the wedge block 9, the wedge block 9 slides to the outer side of the sliding rail 8 under the pushing of the ejection spring 11 at the moment, the spring air bag 10 is pulled, the air pressure inside the spring air bag 10 is small, air enters the spring air bag 10 from the inside of the elastic air bag 13 through the air pipe 12, the elastic air bag 13 drives the clamping block 14 to move towards the inside of the square groove, and the electric wire can be freely taken out.

To sum up, this moulded case circuit breaker that contact is difficult for droing can drive briquetting 6 through the rotation of screw rod 5 and compress tightly the electric wire that gets into inside of standing groove 2, and the tip and the contact 3 of electric wire contact each other this moment, and crowd the inside of elasticity bag 13 through the inside air of spring gasbag 10 for press from both sides tight piece 14 and press from both sides tightly the both sides of electric wire, thereby reached and to strengthen the centre gripping area to the electric wire, improved the stability when electric wire and contact 3 contact, avoided the effect that the contact drops.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "secured" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The standard parts used by the utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the description of the attached drawings.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a moulded case circuit breaker that contact is difficult for droing, includes frame (1), its characterized in that: the novel electric soldering iron is characterized in that a placing groove (2) is formed in the rack (1), a contact (3) is fixedly connected to the side wall of the top end of the placing groove (2), a movable groove (4) is formed in the bottom of the inner wall of the rack (1), a screw rod (5) is connected to the inner thread of the movable groove (4), a pressing block (6) is rotatably connected to one end, close to the movable groove (4), of the screw rod (5), a sliding groove (7) is formed in the inner wall of the rack (1) and located above the right side of the movable groove (4), a sliding rail (8) is formed in one end, far away from the movable groove (4), of the sliding groove (7), a wedge block (9) is connected to the inner portion of the sliding rail (8) in a sliding mode, a spring air bag (10) is fixedly connected to the center, close to one side of the bottom of the sliding rail (8), of the wedge block (9), and an ejection spring (11) is fixedly connected to the edge, close to one side of the bottom of the sliding rail (8), trachea (12) have been seted up to one side that wedge (9) were kept away from in spring gasbag (10), the one end fixedly connected with elasticity bag (13) of spring gasbag (10) are kept away from in trachea (12), the one end fixedly connected with that trachea (12) were kept away from in elasticity bag (13) presss from both sides tight piece (14).

2. The molded case circuit breaker with a contact not easy to fall off as claimed in claim 1, wherein: the placing groove (2) is a groove vertical to the ground, the movable groove (4) is a groove horizontal to the ground, and the placing groove (2) is communicated with the movable groove (4).

3. The molded case circuit breaker with a contact not easy to fall off as claimed in claim 1, wherein: the pressing block (6) is a T-shaped block, and the width of one end, close to the screw rod (5), of the pressing block (6) is larger than that of one end, far away from the screw rod (5).

4. The molded case circuit breaker with a contact not easy to fall off as claimed in claim 1, wherein: briquetting (6) sliding connection is in the inside of spout (7), one side of wedge (9) hypotenuse is towards briquetting (6).

5. The molded case circuit breaker with a contact not easy to fall off as claimed in claim 1, wherein: the sliding rail (8) is horizontal to the ground and vertical to the sliding groove (7), and the sliding rail and the sliding groove are communicated with each other.

6. The molded case circuit breaker with a contact not easy to fall off as claimed in claim 1, wherein: the spring airbag (10) is communicated with the air pipe (12), the elastic bag (13) is communicated with the air pipe (12), and the elastic bag (13) is a hollow closed cavity made of rubber.

7. The molded case circuit breaker with a contact not easy to fall off as claimed in claim 1, wherein: the side wall of the rack (1) close to the placing groove (2) is internally provided with a square groove, the square groove and the movable groove (4) are on the same horizontal plane and are perpendicular to each other, and the clamping block (14) is connected inside the square groove in a sliding mode.