Circuit breaker with incoming and outgoing line temperature monitoring function

Abstract

The utility model belongs to the field of circuit breakers, and discloses a circuit breaker with incoming and outgoing line temperature monitoring, which comprises a circuit breaker body, the circuit breaker body is provided with a wire inlet and a connecting groove, the inner side of the connecting groove is connected with a circuit connecting block, the circuit breaker body is in threaded connection with an insulating screw rod, and the circuit breaker body is connected with a dustproof cylinder. The dustproof cylinder is located at the outer side of the wire inlet, the dustproof cylinder is in threaded connection with a sealing cover, the sealing cover is provided with a through hole, the sealing cover is connected with an abutting cylinder, the abutting cylinder is connected with a rubber cylinder, the dustproof cylinder is connected with a compaction cylinder, the inner diameter of the compaction cylinder is gradually reduced from outside to inside, and the abutting cylinder and the rubber cylinder are also provided with through holes; according to the technical scheme, dust can be prevented from entering the circuit breaker body from a gap between the wire and the wire inlet, stable connection between the wire and the circuit connecting block is ensured, the use stability of the circuit breaker is improved, and the failure rate is reduced; the structure is simple, wires can be conveniently connected and installed, and operation convenience is improved.

Description

Technical Field

[0001] The utility model relates to the field of circuit breakers, in particular to a circuit breaker with in-out wire temperature monitoring. Background Art

[0002] A circuit breaker refers to a switching device that can close, carry and break the current under normal circuit conditions and can close, carry and break the current under abnormal circuit conditions within a specified time. It is generally used in a circuit box and serves as a device for protecting the circuit.

[0003] For example, the Chinese utility model (publication number CN209729846U) discloses an intelligent circuit breaker, which includes a circuit breaker body. A temperature monitoring part is connected to the circuit breaker body. The temperature monitoring part includes a lower shell, a conductive sheet installed on the lower shell, and a temperature detection head for measuring the temperature of the conductive sheet. The conductive sheet includes an upper connection part connected to the circuit breaker body, a current-carrying extension part fixed to the upper connection part, and a lower connection part fixed to the current-carrying extension part. The lower connection part is used for connecting an external wire. The current-carrying extension part is not parallel to the upper connection part and the lower connection part. This technical solution has the effects of reducing the width of the lower shell, being able to monitor the temperature of the in-out wires connected to the circuit breaker, and at the same time reducing the space occupied by the entire temperature monitoring part.

[0004] However, there are still certain technical problems in the actual use of the above technical solution. The external wire in the above technical solution is fixed at the connection between the wire and the circuit breaker through a bolt provided on the circuit breaker. This is also the current connection method for most circuit breakers and wiring terminals, that is, as Figure 1 shown, the wire is inserted into the connection port so that the connection between the wire and the wiring terminal is in contact. Then, the bolt is screwed to make the bolt contact the wire, and the wire is stably clamped, so that the wire can stably contact the wiring terminal to complete the transmission. In actual design, a slidable sealing plate is generally provided at the connection port. When connecting the wire, the sealing plate is opened, so that the wire can be inserted into the connection port. However, there are still the following technical problems with this setting. When the wire is inserted into the connection port, since the wire is cylindrical, the sealing plate cannot completely seal the wire inlet, which will cause dust to enter the wire inlet, and then accumulate at the connection between the wire and the wiring terminal, thereby affecting the connection between the wire and the wiring terminal, easily causing safety accidents, being inconvenient to use, and having poor practicability. Content of the Utility Model

[0005] The utility model aims to provide a circuit breaker with in-out wire temperature monitoring to solve the problems raised in the above background art.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] A circuit breaker with inlet and outlet temperature monitoring comprises a circuit breaker body, wherein the circuit breaker body is provided with an inlet, the circuit breaker body is provided with a connecting groove, the inner side of the connecting groove is connected to a circuit connection block, the circuit breaker body is threadedly connected to an insulating screw, the circuit breaker body is connected to a dustproof cylinder, the dustproof cylinder is located outside the inlet, the dustproof cylinder is threadedly connected to a cover, the cover is provided with a through hole, the cover is connected to a resistance cylinder, the resistance cylinder is connected to a rubber cylinder, the dustproof cylinder is connected to a compacting cylinder, the inner diameter of the compacting cylinder gradually decreases from the outside to the inside, and the resistance cylinder and the rubber cylinder are also provided with through holes.

[0008] Preferably, the circuit breaker body is connected with a mounting cylinder, and the dustproof cylinder is threadedly connected to the mounting cylinder.

[0009] Preferably, the sealing cover is provided with an annular convex groove, the abutment cylinder is connected with a convex round bar, and the convex round bar is slidably connected with the annular convex groove.

[0010] Preferably, the insulating screw is connected with an insulating wide plate.

[0011] Compared with the prior art, this technical solution produces the following beneficial effects:

[0012] (1) The technical solution can achieve a close fit between the wire and the dustproof cylinder through the cooperation of the dustproof cylinder, the sealing cover and the rubber cylinder, so that dust cannot enter the circuit breaker body from the gap between the wire and the line inlet, thereby ensuring a stable connection between the wire and the circuit connection block, improving the stability of the circuit breaker, and reducing the failure rate; at the same time, the sealing cover can be twisted to contact the wire and the dustproof cylinder, so that the wire can slide relative to the dustproof cylinder, which is convenient for connecting and installing the wire and improving the convenience of operation.

[0013] (2) In the technical solution, the dust sleeve is threadedly connected to the circuit breaker body, which facilitates the sliding of the dust sleeve relative to the wire, thereby facilitating the operator to accurately insert the wire into the circuit breaker body and complete the installation of the wire, greatly improving the convenience of operation; the resistance block is rotatably connected to the cover, so that the rubber sleeve can be better and more smoothly squeezed between the wire and the compacting sleeve, improving the convenience of installation and the sealing performance; the resistance clamping of the wire is improved by the insulating wide plate, further improving the connection stability between the wire and the circuit connection block. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional schematic diagram of the connection between the electric wire and the circuit breaker in the prior art;

[0015] Figure 2 It is a top view of a partial cross-sectional view of the utility model;

[0016] Figure 3 A side sectional view of the dustproof cylinder provided by the utility model;

[0017] Reference numerals: Circuit breaker body 1, mounting cylinder 2, dust-proof cylinder 3, cover 4, sealing plate 5, connection port 6, insulating screw 7, annular convex groove 8, convex round bar 9, through hole 10, abutting cylinder 11, rubber cylinder 12, incoming line port 13, circuit connection block 14, insulating wide plate 15, connection groove 16, compaction cylinder 17. Detailed implementation mode

[0018] The present utility model will be further described in detail below in conjunction with the drawings and the implementation mode:

[0019] Figure 1 It is a cross-sectional view of the connection between the wire and the circuit breaker in the prior art, that is, the connection between the wire and the circuit breaker is completed by means of bolts as described in the background art. The sealing plate 5 mentioned in the background art can slide up and down relative to the circuit breaker, thereby opening the connection port 6 to facilitate the insertion of the wire into the circuit breaker.

[0020] As Figures 2 to 3 shown, a circuit breaker with incoming and outgoing line temperature monitoring includes a circuit breaker body 1. The circuit breaker body 1 is provided with incoming line ports 13. There are two groups of incoming line ports 13, which are respectively located on the upper side and the lower side of the circuit breaker to facilitate circuit connection. The circuit breaker body 1 is provided with a connection groove 16, and a circuit connection block 14 is connected to the inner side of the connection groove 16. The circuit breaker body 1 is threadedly connected with an insulating screw 7. The circuit breaker body 1 is connected with a dust-proof cylinder 3. The dust-proof cylinder 3 is located outside the incoming line port 13. The dust-proof cylinder 3 is threadedly connected with a cover 4. The cover 4 is provided with a through hole 10. The cover 4 is connected with an abutting cylinder 11. The abutting cylinder 11 is located inside the dust-proof cylinder 3. The abutting cylinder 11 is connected with a rubber cylinder 12. The rubber cylinder 12 is made of compressible rubber. The dust-proof cylinder 3 is connected with a compaction cylinder 17. The inner diameter of the compaction cylinder 17 gradually decreases from outside to inside. Taking Figure 3 as an example, the inner diameter of the compaction cylinder 17 gradually decreases from left to right. The abutting cylinder 11 and the rubber cylinder 12 are also provided with through holes 10. The diameter of the through hole 10 is larger than the diameter of the wire to be installed.

[0021] The circuit breaker body 1 is connected with a mounting cylinder 2. The dust-proof cylinder 3 is threadedly connected with the mounting cylinder 2; The cover 4 is provided with an annular convex groove 8. The abutting cylinder 11 is connected with a convex round bar 9. The convex round bar 9 is slidably connected with the annular convex groove 8, so that the abutting cylinder 11 is rotationally connected with the cover 4. The insulating screw 7 is connected with an insulating wide plate 15. The internal circuit components of the circuit breaker body 1 of the present application are set in the same way as those in the prior art. Therefore, the temperature detection of the incoming and outgoing lines is also a function of the present application. Its structure and principle are the same as those in the prior art, and will not be elaborated here.

[0022] The specific implementation process is as follows:

[0023] The following takes Figure 3Taking this as an example, the connection between the wire and the circuit breaker body 1 will be described in detail. When connecting the wire, first turn the cover 4 to the left. The cover 4 moves leftward in a spiral manner. Since the contact cylinder 11 is rotatably connected to the cover 4 and there is a certain frictional force between the contact cylinder 11 and the side wall of the dust-proof cylinder 3, the contact cylinder 11 will move horizontally to the left as the cover 4 rotates and moves to the left, thereby pulling the rubber cylinder 12 to the left, making the right end of the rubber cylinder 12 located on the left side of the compaction cylinder 17. At this time, pass the wire through the corresponding through hole 10, so that the wire passes through the cover 4, the contact cylinder 11 and the rubber cylinder 12 in sequence, and then the dust-proof cylinder 3 is sleeved outside the wire. Then insert the wire into the connection groove 16 along the inlet 13, so that the wire is located under the insulating wide plate 15. Then turn the insulating screw 7, making the insulating screw 7 and the insulating wide plate 15 move downward, thereby making the wire contact the circuit connector, completing the circuit connection. Then slide the dust-proof cylinder 3 relative to the wire and thread the dust-proof cylinder 3 onto the mounting cylinder 2 to complete the connection between the dust-proof cylinder 3 and the circuit breaker body 1. Then turn the cover 4 to make the cover 4 move to the right. The rightward movement of the cover 4 drives the contact cylinder 11 and the rubber cylinder 12 to move to the right. As the rubber cylinder 12 moves to the right, the right end of the rubber cylinder 12 gradually inserts between the compaction cylinder 17 and the wire. Since the inner diameter of the compaction cylinder 17 gradually decreases from left to right, as the rubber cylinder 12 moves to the right, the inner side wall of the rubber cylinder 12 gradually contacts the outer wall of the wire, and the outer side wall of the rubber cylinder 12 gradually contacts the inner wall of the compaction cylinder 17. As the rubber cylinder 12 continues to move to the right, the rubber cylinder 12 assembly is compacted, thereby making the rubber cylinder 12 fill the gap between the wire and the inner wall of the compaction cylinder 17 to complete the sealing, preventing dust from flowing into the circuit breaker body 1 through the gap between the wire and the inner side wall of the compaction cylinder 17, and completing the installation; reverse operation can be performed during disassembly; since the dust-proof cylinder 3 is threadedly connected to the mounting cylinder 2, when the wire diameter changes, a dust-proof cylinder 3 with a suitable diameter through hole 10 can be selected according to the wire diameter, improving the applicability of the device.

[0024] Through the cooperation of the dust-proof cylinder 3, the cover 4 and the rubber cylinder 12, this technical solution can achieve a tight fit between the wire and the dust-proof cylinder 3, thereby preventing dust from entering the circuit breaker body 1 through the gap between the wire and the inlet 13, ensuring the stable connection between the wire and the circuit connection block 14, improving the use stability of the circuit breaker, and reducing the failure rate; at the same time, the cover 4 can be turned to release the contact between the wire and the dust-proof cylinder 3, enabling the wire to slide relative to the dust-proof cylinder 3, facilitating the connection and installation of the wire, and improving the operation convenience; the dust-proof cylinder 3 is threadedly connected to the circuit breaker body 1, facilitating the sliding of the dust-proof cylinder 3 relative to the wire, and then facilitating the staff to accurately insert the wire into the circuit breaker body 1 to complete the installation of the wire, greatly improving the operation convenience; the contact block is rotatably connected to the cover 4, enabling the rubber cylinder 12 to be better and more smoothly squeezed between the wire and the compaction cylinder 17, improving the installation convenience and at the same time improving the sealing performance; the insulating wide plate 15 is used to improve the contact and clamping of the wire, further improving the connection stability between the wire and the circuit connection block 14.

[0025] The above are only embodiments of the present utility model, and common general technical solutions and / or characteristics in the solution are not described in detail herein. It should be noted that for those skilled in the art, without departing from the technical solution of the present utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicality of the patent. The protection scope required by this application shall be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

Claims

1. A circuit breaker with in-out wire temperature monitoring, characterized in that: The invention comprises a circuit breaker body (1), wherein the circuit breaker body (1) is provided with a line inlet (13), the circuit breaker body (1) is provided with a connection groove (16), the inner side of the connection groove (16) is connected to a circuit connection block (14), the circuit breaker body (1) is threadedly connected to an insulating screw (7), the circuit breaker body (1) is connected to a dustproof cylinder (3), the dustproof cylinder (3) is located outside the line inlet (13), the dustproof cylinder (3) is threadedly connected to a cover (4), the cover (4) is provided with a through hole (10), the cover (4) is connected to a resistance cylinder (11), the resistance cylinder (11) is connected to a rubber cylinder (12), the dustproof cylinder (3) is connected to a compacting cylinder (17), the inner diameter of the compacting cylinder (17) gradually decreases from the outside to the inside, and the resistance cylinder (11) and the rubber cylinder (12) are also provided with a through hole (10).

2. The circuit breaker with in-out wire temperature monitoring according to claim 1, characterized in that: The circuit breaker body (1) is connected to a mounting tube (2), and the dustproof tube (3) is threadedly connected to the mounting tube (2).

3. The circuit breaker with in-out wire temperature monitoring according to claim 1, characterized in that: The sealing cover (4) is provided with an annular convex groove (8), the abutting cylinder (11) is connected with a convex round bar (9), and the convex round bar (9) is slidably connected with the annular convex groove (8).

4. A circuit breaker with in-out wire temperature monitoring as described in claim 1, characterized in that: The insulating screw rod (7) is connected to an insulating wide plate (15).

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