Pole-mounted vacuum circuit breaker convenient for wiring

Abstract

The utility model discloses a pole-mounted vacuum circuit breaker convenient for wiring, the pole-mounted vacuum circuit breaker convenient for wiring comprises a circuit breaker body, a plurality of wire inlet ends, a plurality of wire outlet ends and a plurality of plug pins, the wire inlet ends, the wire outlet ends and the plug pins are arranged on the circuit breaker body, the wire inlet ends and the wire outlet ends are provided with current-conducting plates, each current-conducting plate is provided with at least two first through holes, and the plug pins are arranged in the first through holes. The conductive plate is internally provided with a telescopic movable plate, the movable plate is provided with a second through hole corresponding to the first through hole, and the plug pin is inserted into the first through hole and the second through hole. The plug pin penetrates through the copper nose and is inserted into the overlapped first through hole and second through hole, the elastic force released by the first spring is applied to the movable plate, the friction force between the plug pin and the current-conducting plate is increased, the fixing block is embedded into the fixing groove, and the connection stability between the plug pin and the current-conducting plate is further enhanced; and the installation of the copper nose can be completed without other tools, so that the product has the advantages of firm fixation and convenient wiring.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum circuit breakers, in particular to a pole-mounted vacuum circuit breaker convenient for wiring. Background Technique

[0002] As an important power equipment, the pole-mounted vacuum circuit breaker is mainly used for control and protection in the power system. Specifically, it can effectively break and close load current, overload current and short-circuit current, which is crucial for ensuring the stable operation and safety of the power system.

[0003] When wiring the existing pole-mounted vacuum circuit breaker, generally, the wire needs to be connected and fixed to the copper nose in advance, and the copper nose is installed and fixed on the conductive plate of the pole-mounted vacuum circuit breaker through bolts. However, the above connection method is time-consuming and laborious, not convenient for quick connection and installation. At the same time, the pole-mounted circuit breaker body installed outdoors is exposed to the air for a long time, and the bolts and nuts are corroded by rainwater, which will cause fastening failure and difficult disassembly. Therefore, the applicant has made a beneficial design and found a solution to the above problems. The technical solution to be introduced below was generated under this background. Summary of the Invention

[0004] The purpose of the utility model is to overcome the deficiencies of the above traditional pole-mounted vacuum circuit breaker design and provide a product with reliable fixation and convenient wiring.

[0005] To solve the above problems, the utility model adopts the following technical solutions.

[0006] A pole-mounted vacuum circuit breaker convenient for wiring includes a circuit breaker body, and a plurality of incoming line terminals, outgoing line terminals and pins arranged on the circuit breaker body. The incoming line terminals and outgoing line terminals are provided with conductive plates. The conductive plates are provided with at least two first through holes. A retractable movable plate is arranged inside the conductive plate. The movable plate is provided with second through holes corresponding to the first through holes. The pins are inserted into the first through holes and the second through holes. The rod of the pin is provided with a plurality of equally spaced fixing grooves from top to bottom. The movable plate is provided with a first spring and abuts against the conductive plate, so that the second through hole tightly presses against the rod of the pin. Retractable fixing blocks are arranged on both sides of the second through hole and are embedded into the fixing grooves.

[0007] Preferably, the head of the pin is provided with an insulating connector and a pull ring. One end of the insulating connector is fixedly connected to the conductive plate. The entrance of the fixing groove is provided with a chamfer.

[0008] Preferably, the conductive plate is provided with a sandwich groove. The sandwich groove is provided with a third through hole. One end of the third through hole is provided with a first blind hole, and the other end is provided with a second blind hole.

[0009] Preferably, the movable plate is slidably arranged in the interlayer groove, and clearance grooves are provided on both sides of the movable plate, and the clearance grooves are provided with a third blind hole of the first blind hole, and concave cavities are provided on both sides of the second through hole, and limiting grooves are provided on both sides of the concave cavity, and the concave cavity is provided with a fourth blind hole.

[0010] Preferably, the third through hole is provided with a guide rod, one end of the guide rod is provided with a stopper and is arranged in the second blind hole, the guide rod passes through the third blind hole, the other end of the guide rod is provided with a stop ring and is arranged in the yield groove, and the first spring is arranged in the first blind hole and the third blind hole.

[0011] Preferably, the fixing block is provided with an inserting block, the inserting block is provided with an arc-shaped fitting portion, and inclined surfaces are provided at the upper and lower parts of the fitting portion.

[0012] Preferably, limiting blocks are provided on both sides of the fixing block and are slidably arranged in the limiting grooves. The fixing block is provided with a fifth blind hole, and the fifth blind hole is provided with a second spring and abuts against the fourth blind hole, so that the insert block is embedded in the fixing groove.

[0013] Beneficial effects:

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model passes the plug through the copper nose and applies a thrust to the movable plate so that the first through hole and the second through hole overlap, and then the plug is inserted into the first through hole and the second through hole. As the plug gradually sinks, the fixed block will extend and retract until the plug presses the copper nose against the conductive plate, and the first spring releases elastic force to the movable plate so that the second through hole is tightly attached to the plug, increasing the friction between the plug and the conductive plate, which is the first connection point; after the fixed block is embedded in the fixing groove, the plug is prevented from being separated from the first through hole and the second through hole, which is the second connection point. Through the above-mentioned double fixing design, the connection between the wiring terminal and the conductive plate is ensured to be stable, and no other tools are needed when wiring, so that the product has the advantages of reliable fixing and convenient wiring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a pole-mounted vacuum circuit breaker that is easy to connect. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of a pole-mounted vacuum circuit breaker that is easy to connect. Figure 2 ;

[0018] Figure 3 The side cross-sectional structure of a pole-mounted vacuum circuit breaker that is convenient for wiring is shown in the utility model. Figure 1 ;

[0019] Figure 4 For the present utility model Figure 3 Partial enlarged structural view of Detail A of a pole-mounted vacuum circuit breaker facilitating wiring;

[0020] Figure 5 Side sectional structural schematic of a pole-mounted vacuum circuit breaker facilitating wiring for the present utility model Figure 2 ;

[0021] Figure 6 For the present utility model Figure 5 Partial enlarged structural view of Detail B of a pole-mounted vacuum circuit breaker facilitating wiring;

[0022] Figure 7 Sectional structural schematic of a pole-mounted vacuum circuit breaker facilitating wiring for the present utility model;

[0023] Figure 8 For the present utility model Figure 7 Partial enlarged structural view of Detail C of a pole-mounted vacuum circuit breaker facilitating wiring;

[0024] Figure 9 Structural schematic of the fixing block of a pole-mounted vacuum circuit breaker facilitating wiring for the present utility model;

[0025] Figure 10 Exploded structural schematic of the fixing block of a pole-mounted vacuum circuit breaker facilitating wiring for the present utility model;

[0026] The corresponding relationship between each attached drawing label and the component name in the figure is as follows:

[0027] Reference numerals: 1, circuit breaker body; 2, plug pin; 3, conductive plate; 4, movable plate; 5, first spring; 6, fixing block; 7, guide rod; 8, second spring;

[0028] 11, incoming line end; 12, outgoing line end;

[0029] 21, fixing groove; 22, insulating connector; 23, chamfer; 24, pull ring;

[0030] 31, first through hole; 32, sandwich groove; 33, third through hole; 34, first blind hole; 35, second blind hole;

[0031] 41, second through hole; 42, relief groove; 43, third blind hole; 44, cavity; 45, limiting groove; 46, fourth blind hole;

[0032] 61, insertion block; 62, fitting portion; 63, inclined surface; 64, limiting block; 65, fifth blind hole;

[0033] 71, blocking portion; 72, retaining ring. Detailed implementation manners

[0034] The technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work belong to the scope of protection of the present utility model.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0036] In the embodiments of the present utility model, "and / or" only describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0037] Reference example Figures 1 to 10 , a pole-mounted vacuum circuit breaker convenient for wiring, including a circuit breaker body 1, and a plurality of incoming line terminals 11, outgoing line terminals 12, and plugs 2 provided on the circuit breaker body 1. Conductive plates 3 are provided on the incoming line terminals 11 and the outgoing line terminals 12. The conductive plates 3 are provided with at least two first through holes 31. A retractable movable plate 4 is provided inside the conductive plates 3. The movable plate 4 is provided with second through holes 41 corresponding to the first through holes 31. The plugs 2 are inserted into the first through holes 31 and the second through holes 41. A plurality of equally spaced fixing grooves 21 are provided on the rod of the plug 2 from top to bottom. The movable plate 4 is provided with a first spring 5 and abuts against the conductive plate 3, so that the second through holes 41 tightly press against the rod of the plug 2. Retractable fixing blocks 6 are provided on both sides of the second through holes 41 and are embedded in the fixing grooves 21;

[0038] It is worth mentioning that the head of the plug 2 is provided with an insulating connector 22 and a pull ring 24. One end of the insulating connector 22 is fixedly connected to the conductive plate 3. A chamfer 23 is provided at the entrance of the fixing groove 21. The insulating connector 22 prevents the plug 2 from falling off when it is not inserted into the first through hole 31 and the second through hole 41. The chamfer 23 causes the fixing block 6 to retract into the cavity 44. When the plug 2 fixes the copper nose, and at this time the plug block 61 is inserted into the fixing groove 21, by applying an upward force through the pull ring 24, the plug 2 is pushed to make the fixing block 6 retract into the cavity 44, and the plug 2 is disengaged from the first through hole 31 and the second through hole 41;

[0039] It is worth mentioning that the conductive plate 3 is provided with a sandwich groove 32. The sandwich groove 32 is provided with a third through hole 33. One end of the third through hole 33 is provided with a first blind hole 34, and the other end is provided with a second blind hole 35. The sandwich groove 32 provides an accommodation space for the movable plate 4. The third through hole 33 provides a guiding function for the guide rod 7. The first blind hole 34 makes the blocking portion 71 flush with the surface of the conductive plate 3. The second blind hole 35 provides an accommodation space for the first spring 5;

[0040] It is worth mentioning that the movable plate 4 is slidably arranged in the sandwich groove 32. Both sides of the movable plate 4 are provided with relief grooves 42. The relief grooves 42 are provided with third blind holes 43 of the first blind hole 34. Both sides of the second through hole 41 are provided with cavities 44. Both sides of the cavities 44 are provided with limiting grooves 45. The cavities 44 are provided with fourth blind holes 46. The relief grooves 42 provide an accommodation space for the retaining ring 72. The third blind holes 43 provide an accommodation space for the first spring 5. The cavities 44 provide an accommodation space for the fixing block 6, making the fixing block 6 flush with the movable plate 4. The limiting grooves 45 limit the protruding distance of the fixing block 6. The fourth blind holes 46 provide an accommodation space for the second spring 8;

[0041] It is worth mentioning that the third through hole 33 is provided with a guide rod 7. One end of the guide rod 7 is provided with a blocking portion 71 and is arranged in the second blind hole 35. The guide rod 7 passes through the third blind hole 43. The other end of the guide rod 7 is provided with a retaining ring 72 and is arranged in the relief groove 42. The first spring 5 is arranged in the first blind hole 34 and the third blind hole 43. The guide rod 7 provides a guiding function for the movable plate 4 and prevents the first spring 5 from detaching. The blocking portion 71 limits the distance between the baffle and the end face of the relief groove 42. The distance between the baffle and the relief groove 42 is the protruding distance of the movable plate 4;

[0042] It is worth mentioning that the fixing block 6 is provided with an insertion block 61. The insertion block 61 is provided with an arc-shaped fitting portion 62. Both the upper and lower parts of the fitting portion 62 are provided with inclined surfaces 63. The fitting portion 62 increases the contact area between the insertion block 61 and the outer wall of the fixing groove 21 and improves the friction force. The inclined surfaces 63 are used in cooperation with the chamfer 23;

[0043] It is worth mentioning that both sides of the fixing block 6 are provided with limiting blocks 64 and are slidably arranged in the limiting grooves 45. The fixing block 6 is provided with a fifth blind hole 65. The fifth blind hole 65 is provided with a second spring 8 and abuts against the fourth blind hole 46, making the insertion block 61 embed into the fixing groove 21. Through the fifth blind hole 65 and the fourth blind hole 46, enough space is provided for the second spring 8 to ensure that the second spring 8 is not excessively squeezed and the elastic potential energy is reduced.

[0044] Now, the working principle of the present utility model is described as follows:

[0045] After the latch 2 is pulled out of the first through hole 31 and the second through hole 41, the movable plate 4 is not affected by the resistance of the latch 2, and the first spring 5 releases elastic force to the movable plate 4, so that the movable plate 4 extends outward until the baffle abuts against the end surface of the yielding groove 42 and stops moving. At this time, the first through hole 31 and the second through hole 41 are in a misaligned relationship;

[0046] Put the plug 2 through the hole of the copper nose, first, apply thrust to the movable plate 4 to make the movable plate 4 retract, so that the first through hole 31 coincides with the second through hole 41, and compress the first spring 5 to store energy, insert the plug 2 into the first through hole 31 and the second through hole 41, as the plug 2 is pressed down and abuts against the inclined surface 63, the chamfer 23 moves on the inclined surface 63, so that the fixed block 6 gradually retracts into the concave cavity 44, and compresses the second spring 8 to store energy, until the fixed groove 21 coincides with the plug block 61, the second spring 8 releases the elastic force to the fixed block 6, so that the plug block 61 is embedded in the fixed groove 21;

[0047] Continue to apply downward pressure to the plug 2 that is greater than the pressure initially applied to the first through hole 31 and the second through hole 41, so that the fixing block 6 extends and retracts until the plug 2 presses the copper nose against the conductive plate 3. At this time, release the force applied to the movable plate 4, and the elastic force released by the first spring 5 is applied to the movable plate 4. The second through hole 41 pushes the plug 2, pressing the plug 2 against the first through hole 31 to increase friction. At the same time, the plug block 61 is inserted into the fixing groove 21 to further increase the connection stability between the plug 2 and the conductive plate 3.

[0048] The above design scheme can make the product have the advantages of firm fixation and convenient wiring.

[0049] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A pole-mounted vacuum circuit breaker convenient for wiring, comprising a circuit breaker body (1), and a plurality of inlet terminals (11), outlet terminals (12), and plugs (2) arranged on the circuit breaker body (1), characterized in that: The inlet (11) and outlet (12) are provided with a conductive plate (3), the conductive plate (3) is provided with at least two first through holes (31), a retractable movable plate (4) is provided inside the conductive plate (3), the movable plate (4) is provided with a second through hole (41) corresponding to the first through hole (31), the plug (2) is inserted into the first through hole (31) and the second through hole (41), the rod of the plug (2) is provided with a plurality of equally spaced fixing grooves (21) from top to bottom, the movable plate (4) is provided with a first spring (5) and abuts against the conductive plate (3) so that the second through hole (41) is pressed tightly against the rod of the plug (2), and retractable fixing blocks (6) are provided on both sides of the second through hole (41) and embedded in the fixing grooves (21).

2. The pole-mounted vacuum circuit breaker for easy wiring according to claim 1, characterized in that: The head of the plug (2) is provided with an insulating connector (22) and a pull ring (24); one end of the insulating connector (22) is connected and fixed to the conductive plate (3); and a chamfer (23) is provided at the entrance of the fixing groove (21).

3. The pole-mounted vacuum circuit breaker for easy wiring according to claim 2, characterized in that: The conductive plate (3) is provided with an interlayer groove (32), the interlayer groove (32) is provided with a third through hole (33), one end of the third through hole (33) is provided with a first blind hole (34), and the other end is provided with a second blind hole (35).

4. The pole-mounted vacuum circuit breaker for easy wiring according to claim 3, characterized in that: The movable plate (4) is slidably arranged in the interlayer groove (32), and the movable plate (4) is provided with a clearance groove (42) on both sides, and the clearance groove (42) is provided with a third blind hole (43) of the first blind hole (34), and the second through hole (41) is provided with a concave cavity (44) on both sides, and the concave cavity (44) is provided with a limiting groove (45) on both sides, and the concave cavity (44) is provided with a fourth blind hole (46).

5. The pole mounted vacuum circuit breaker for easy wiring according to claim 4, characterized in that: The third through hole (33) is provided with a guide rod (7), one end of the guide rod (7) is provided with a stopper (71) and is arranged in the second blind hole (35), the guide rod (7) passes through the third blind hole (43), the other end of the guide rod (7) is provided with a stopper ring (72) and is arranged in the clearance groove (42), and the first spring (5) is arranged in the first blind hole (34) and the third blind hole (43).

6. The pole mounted vacuum circuit breaker for easy wiring according to claim 5, characterized in that: The fixing block (6) is provided with an inserting block (61), the inserting block (61) is provided with an arc-shaped fitting portion (62), and inclined surfaces (63) are provided at the upper and lower parts of the fitting portion (62).

7. The pole mounted vacuum circuit breaker for easy wiring according to claim 6, characterized in that: Limit blocks (64) are provided on both sides of the fixing block (6) and are slidably arranged in the limit grooves (45). The fixing block (6) is provided with a fifth blind hole (65). The fifth blind hole (65) is provided with a second spring (8) and abuts against the fourth blind hole (46), so that the insert block (61) is embedded in the fixing groove (21).

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