Integrated plastic-coated contact arm for circuit breaker

Abstract

The utility model relates to the technical field of electronic products, and discloses an integrated plastic-coated contact arm for a circuit breaker, which comprises a contact arm body, the left side and the right side of the contact arm body are movably connected with a first connecting seat and a second connecting seat, and the first connecting seat and the second connecting seat are provided with connecting devices. The connecting device comprises fixing seats, rotating rods, threaded rods, inserting grooves, inserting rods, a water inlet groove, a water outlet groove and valve grooves. The fixing seats are fixedly connected to the upper ends and the lower ends of the front faces of the first connecting seat and the second connecting seat. The first connecting seat and the second connecting seat are connected by inserting the inserting rod into the inserting groove, the threaded rod is driven to rotate by rotating the rotating rod, so that the first connecting seat and the second connecting seat are connected more firmly, and water is injected into the first connecting seat and the second connecting seat through the water inlet by opening the valve groove. The outer wall of the contact arm is subjected to water-cooling heat dissipation, and water is recycled through a water outlet.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic products, in particular to an integrated plastic-coated contact arm for a circuit breaker. Background Art

[0002] Circuit breakers are overload protection devices for high-power equipment such as engines, transmission lines, transformers, generators, etc. In the current market, the temperature rise of the main circuit of circuit breaker poles can only meet the standard of one-time temperature rise. If the temperature rise level is to be increased, the cost of the product will inevitably increase.

[0003] For example, the patent with publication number CN202796703U discloses an integrated plastic-coated contact arm, including a conductor rod with a plastic-coated layer on the outside. The conductor rod is an aluminum rod, and the plastic-coated layer is made of plastic and glass fiber. The integrated plastic-coated contact arm is directly inserted into the interior of the pole sleeve and connected to the top of the vacuum arc extinguishing chamber inside the pole. The integrated plastic-coated contact arm of the utility model, through the integrated plastic-coating design of the circuit breaker contact arm, during the operation of the circuit breaker, the fewer the number of conductors passing through the main circuit current and the fewer the overlapping surfaces of the conductors, the lower the heat generated. This design can maximize the reduction of the main circuit electrical conductor components and insulating components of the circuit breaker on the basis of meeting 1.1 times the natural air cooling, and at the same time has no negative impact on the mechanical and electrical characteristics of the circuit breaker itself.

[0004] The existing connection between the contact arm and the contact is not strong enough. Due to long-term use, the contact arm generates high temperature, which makes it inconvenient to dissipate heat from the contact arm. Therefore, an integrated plastic-coated contact arm for a circuit breaker is proposed to solve the above problem. Utility Model Content

[0005] The purpose of the utility model is to provide an integrated plastic-coated contact arm for a circuit breaker, so as to solve the above-mentioned problem.

[0006] To achieve the above object, the utility model provides the following technical solution: an integrated plastic-coated contact arm for a circuit breaker, comprising a contact arm body, a first connecting seat and a second connecting seat being movably connected on the left and right sides of the contact arm body, and a connecting device being arranged on the first connecting seat and the second connecting seat;

[0007] The connecting device includes a fixed seat, a rotating rod, a threaded rod, a slot, an insertion rod, a water inlet groove, a water outlet groove, and a valve groove. The fixed seat is fixedly connected to the upper and lower ends of the front of the first connecting seat and the second connecting seat.

[0008] Preferably, a threaded hole is provided in the fixing seat, the threaded rod is threadedly connected in the threaded hole in the fixing seat, and the rotating rod is fixedly connected to the left side of the threaded rod. By rotating the rotating rod, the threaded rod is driven to rotate.

[0009] Preferably, the slot is fixedly opened below the right side of the first connection seat and above the left side of the second connection seat, and the plug rod is fixedly connected above the right side of the first connection seat and below the left side of the second connection seat. The first connection seat and the second connection seat are connected by plugging the plug rod into the slot.

[0010] Preferably, the water inlet is opened on the upper left side of the first connecting seat, the water outlet is opened on the lower right side of the second connecting seat, and the valve slot is movably mounted on the water inlet and the water outlet. By opening the valve slot, the water inlet and the water outlet can be used.

[0011] Preferably, a contact is provided at the top of the contact arm body, and a fixing device is provided at the connection between the contact arm body and the contact, and the fixing device includes a mounting seat, a pull rod, a slide rod, and an arc plate, and the mounting seat is sleeved at the connection between the contact arm body and the contact. By providing the fixing device, the contact arm body and the contact are connected.

[0012] Preferably, the two slide bars movably penetrate the mounting seat, the pull rod is fixedly connected to the outside of the slide bar, and the arc plate is fixedly connected to the inside of the slide bar. By pulling the pull rod, the arc plate can be driven to slide.

[0013] The utility model provides an integrated plastic-coated contact arm for a circuit breaker, which has the following beneficial effects:

[0014] (1) The utility model connects the first connecting seat and the second connecting seat by plugging the plug rod into the slot, and drives the threaded rod to rotate by rotating the rotating rod, so that the connection between the first connecting seat and the second connecting seat is more secure. By opening the valve slot, water is injected into the first connecting seat and the second connecting seat through the water inlet, and the outer wall of the contact arm is cooled by water, and the water is recovered through the water outlet.

[0015] (2) The utility model drives the slide bar to slide by pulling the pull rod, and the sliding of the slide bar drives the sliding of the arc plate, and the sliding of the arc plate clamps the contact arm body and the contact, so that the connection between the contact arm body and the contact is more secure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the connection device of the utility model;

[0019] Figure 3This is a schematic diagram of the side structure of the connecting device of the utility model;

[0020] Figure 4 It is a schematic diagram of the connection between the contact arm body and the contact head of the utility model structure.

[0021] In the figure: 1. contact arm body; 2. first connecting seat; 3. second connecting seat; 4. connecting device; 401. fixing seat; 402. rotating rod; 403. threaded rod; 404. slot; 405. plug rod; 406. water inlet; 407. water outlet; 408. valve slot; 5. fixing device; 501. mounting seat; 502. pull rod; 503. sliding rod; 504. arc plate; 6. contact. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Embodiment 1:

[0025] like Figure 1-4As shown, the utility model provides a technical solution: an integrated plastic-coated contact arm for a circuit breaker, comprising a contact arm body 1, a first connection seat 2 and a second connection seat 3 are movably connected on the left and right sides of the contact arm body 1, and a connecting device 4 is arranged on the first connection seat 2 and the second connection seat 3; the connecting device 4 comprises a fixed seat 401, a rotating rod 402, a threaded rod 403, a slot 404, an insert rod 405, a water inlet 406, a water outlet 407, and a valve slot 408, and the fixed seat 401 is fixedly connected to the upper and lower ends of the front of the first connection seat 2 and the second connection seat 3. A threaded hole is provided in the fixed seat 401, and the threaded rod 403 is threadedly connected in the threaded hole in the fixed seat 401, and the rotating rod 402 is fixedly connected to the left side of the threaded rod 403. The slot 404 is fixedly provided below the right side of the first connection seat 2 and above the left side of the second connection seat 3, and the insert rod 405 is fixedly connected to the above right side of the first connection seat 2 and below the left side of the second connection seat 3. The water inlet 406 is opened at the upper left side of the first connecting seat 2 , the water outlet 407 is opened at the lower right side of the second connecting seat 3 , and the valve slot 408 is movably installed on the water inlet 406 and the water outlet 407 .

[0026] In this embodiment, the first connecting seat 2 and the second connecting seat 3 are connected by plugging the insertion rod 405 into the slot 404. At the same time, the first connecting seat 2 and the second connecting seat 3 are connected to the fixed seat 401 on the front. The threaded rod 403 is driven to rotate by rotating the rotating rod 402. The threaded rod 403 rotates in the threaded hole in the fixed seat 401 to connect the first connecting seat 2 and the second connecting seat 3, so that the connection between the first connecting seat 2 and the second connecting seat 3 is more firmly connected. The first connecting seat 2 and the second connecting seat 3 wrap the contact arm body 1. By opening the valve slot 408, water is poured into the first connecting seat 2 and the second connecting seat 3 from the water inlet 406 to cool the outer wall of the contact arm body 1. The water is released through the water outlet 407 to be recycled.

[0027] Embodiment 2:

[0028] like Figure 1-4 As shown, on the basis of the first embodiment, the utility model provides a technical solution: a contact 6 is arranged on the top of the contact arm body 1, a fixing device 5 is arranged at the connection between the contact arm body 1 and the contact 6, the fixing device 5 includes a mounting seat 501, a pull rod 502, a slide rod 503, and an arc plate 504, and the mounting seat 501 is sleeved at the connection between the contact arm body 1 and the contact 6. Two slide rods 503 movably penetrate the mounting seat 501, the pull rod 502 is fixedly connected to the outside of the slide rod 503, and the arc plate 504 is fixedly connected to the inside of the slide rod 503.

[0029] In this embodiment, the pull rod 502 is pulled to drive the slide rod 503 to slide, and the sliding of the slide rod 503 drives the sliding of the arc plate 504, and the sliding of the arc plate 504 clamps the contact arm body 1 and the contact 6.

[0030] When in use, a connecting rod 405 is fixed on the upper right side of the first connecting seat 2 and a slot 404 is provided at the lower part; a slot 404 is provided on the upper right side of the second connecting seat 3 and a connecting rod 405 is fixed at the lower part; the first connecting seat 2 and the second connecting seat 3 are connected by plugging the rod 405 into the slot 404; at the same time, the first connecting seat 2 and the second connecting seat 3 are connected to the fixed seat 401 at the front side; the rotating rod 402 is rotated to drive the threaded rod 403 to rotate; the threaded rod 403 rotates in the threaded hole in the fixed seat 401, and the first connecting seat 2 and the second connecting seat 3 are connected. The first connecting seat 2 and the second connecting seat 3 are connected more firmly, and the first connecting seat 2 and the second connecting seat 3 wrap the contact arm body 1. By opening the valve groove 408, water is poured into the first connecting seat 2 and the second connecting seat 3 from the water inlet 406 to cool the outer wall of the contact arm body 1. The water is released through the water outlet 407 to recycle the water for secondary use. By pulling the pull rod 502, the sliding rod 503 is driven to slide, and the sliding of the sliding rod 503 drives the sliding of the arc plate 504. The arc plate 504 slides to clamp the contact arm body 1 and the contact 6 to connect them.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated plastic-coated contact arm for a circuit breaker, comprising a contact arm body (1), characterized in that: The left and right sides of the contact arm body (1) are movably connected to a first connecting seat (2) and a second connecting seat (3); the first connecting seat (2) and the second connecting seat (3) are provided with a connecting device (4); the connecting device (4) comprises a fixed seat (401), a rotating rod (402), a threaded rod (403), a slot (404), an insert rod (405), a water inlet (406), a water outlet (407), and a valve slot (408); the fixed seat (401) is fixedly connected to the upper and lower ends of the front of the first connecting seat (2) and the second connecting seat (3).

2. The one-piece plastic-coated contact arm for a circuit breaker according to claim 1, characterized in that: A threaded hole is provided in the fixing seat (401), the threaded rod (403) is threadedly connected to the threaded hole in the fixing seat (401), and the rotating rod (402) is fixedly connected to the left side of the threaded rod (403).

3. The one-piece plastic-coated contact arm for a circuit breaker according to claim 1, characterized in that: The slot (404) is fixedly opened at the lower right side of the first connecting seat (2) and at the upper left side of the second connecting seat (3), and the insertion rod (405) is fixedly connected at the upper right side of the first connecting seat (2) and at the lower left side of the second connecting seat (3).

4. The one-piece plastic-coated contact arm for a circuit breaker according to claim 1, characterized in that: The water inlet (406) is opened at the upper left side of the first connecting seat (2), the water outlet (407) is opened at the lower right side of the second connecting seat (3), and the valve slot (408) is movably mounted on the water inlet (406) and the water outlet (407).

5. The one-piece plastic-coated contact arm for a circuit breaker according to claim 1, characterized in that: A contact (6) is arranged at the top of the contact arm body (1), and a fixing device (5) is arranged at the connection between the contact arm body (1) and the contact (6). The fixing device (5) comprises a mounting seat (501), a pull rod (502), a sliding rod (503), and an arc plate (504). The mounting seat (501) is sleeved at the connection between the contact arm body (1) and the contact (6).

6. The one-piece plastic-coated contact arm for a circuit breaker according to claim 5, characterized in that: The two slide bars (503) movably penetrate the mounting seat (501), the pull rod (502) is fixedly connected to the outside of the slide bars (503), and the arc plate (504) is fixedly connected to the inside of the slide bars (503).

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