Arc-extinguishing direct-current relay

Abstract

The utility model relates to the technical field of relays, and discloses an arc extinguishing type DC relay, which comprises a DC relay body, a dustproof assembly comprises supports symmetrically and fixedly connected to two sides of the upper part of the DC relay body, and a bidirectional screw rod is rotatably connected between the two supports. Movable plates are in threaded connection with the exteriors of the two sides of the bidirectional lead screw, a sealing cover is arranged at the top of the direct-current relay body, first connecting rods are symmetrically hinged between the sealing cover and the movable plates through hinge pieces, a guide rod is fixedly connected to the support, and the guide rod is in sliding connection with the movable plate on the same side; according to the utility model, the problem that the normal conductivity is affected due to the fact that dust is easy to accumulate and accumulate at the wiring position because the wiring position is difficult to prevent dust is effectively avoided, the wiring line can be clamped, the situation that the wiring line is loosened due to pulling is prevented, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to an arc-extinguishing DC relay. Background Art

[0002] A relay is an electrical control device. It is an electrical appliance that causes a predetermined step change in the controlled quantity in the electrical output circuit when the change of the input quantity reaches the specified requirement.

[0003] When the existing arc-extinguishing DC relay is actually used, it is generally installed and fixed first, and then wired for use. For example, a high-efficiency arc-extinguishing high-voltage DC relay and its high-efficiency arc-extinguishing device with the patent publication number CN218038934U. Since the wiring part of the relay is always exposed outside after wiring, and the device lacks an integrated dust-proof structure, dust is easy to accumulate and pile up at the wiring place, thus affecting its normal conductivity. Therefore, we provide an arc-extinguishing DC relay. Summary of the Utility Model

[0004] To solve the problem in the above background art that it is difficult to prevent dust from accumulating at the wiring place, which makes dust easy to accumulate and pile up at the wiring place, thus affecting its normal conductivity, the utility model provides an arc-extinguishing DC relay.

[0005] The utility model is realized by the following technical solutions: an arc-extinguishing DC relay, comprising:

[0006] A DC relay body;

[0007] A dust-proof component, the dust-proof component includes brackets symmetrically and fixedly connected to both sides of the upper part of the DC relay body. A bidirectional lead screw is rotatably connected between the two groups of brackets. Moving plates are threadedly connected to the outer sides of both sides of the bidirectional lead screw. A cover is arranged on the top of the DC relay body. Link rods I are symmetrically hinged between the cover and the moving plates through hinge parts. A guide rod is fixedly connected to the bracket and is slidably connected to the moving plate on the same side.

[0008] As a further improvement of the above solution, one side of the top of the DC relay body is symmetrically and fixedly connected with fixed clamping plates through a fixing frame. An active clamping plate is arranged on one side of the fixed clamping plate. A cross bar is fixedly connected to one side of the active clamping plate and is slidably connected to the DC relay body through a guiding part. L-shaped connecting rods are symmetrically and fixedly connected to one side of the cover. Link rods II are hinged between the L-shaped connecting rods and the cross bar on the same side through hinge parts.

[0009] As a further improvement of the above solution, mounting seats are fixedly connected to both sides of the lower part of the DC relay body, and screw holes are provided in the mounting seats.

[0010] As a further improvement of the above solution, wire grooves are symmetrically opened at the lower part of one side of the cover.

[0011] As a further improvement of the above solution, an anti - detachment plate is fixedly connected to the end of the guide rod.

[0012] As a further improvement of the above solution, both the fixed clamping plate and the movable clamping plate are designed in a semi - circular structure.

[0013] As a further improvement of the above solution, anti - slip pads are additionally provided on the opposite surfaces of the fixed clamping plate and the movable clamping plate.

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

[0015] 1. By rotating the bidirectional lead screw of the present utility model, and with the threaded connection between the bidirectional lead screw and the moving plate and the sliding connection between the moving plate and the guide rod, the two groups of moving plates can be driven to move away from each other. With the hinge action between the moving plate, the cover and the first connecting rod, the cover can be driven to move vertically downward, so as to seal the wiring part at the top of the arc - extinguishing type DC relay, thereby playing a role in dust prevention. It effectively avoids the problem that it is difficult to dust - proof the wiring part, resulting in easy accumulation and deposition of dust at the wiring part, which will affect its normal conductivity. The operation is simple and the practicability is strong.

[0016] 2. During the vertical downward movement of the cover of the present utility model, the two groups of L - shaped connecting rods can also be driven to move downward together. With the hinge action between the L - shaped connecting rod, the cross bar and the second connecting rod, and the sliding fit between the cross bar and the guide part, the movable clamping plate can be pushed to approach the fixed clamping plate, so as to clamp and fix the wire connected to the arc - extinguishing type DC relay, thereby preventing the loosening of the wiring part caused by pulling. It ensures the stability of the wiring part of the arc - extinguishing type DC relay and further improves the practical effect of the device. The anti - slip pads provided can increase the friction between the movable clamping plate, the fixed clamping plate and the wire, thus ensuring the stable clamping of the wire. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a top - view three - dimensional structure schematic diagram of the dust - proof component of the present utility model;

[0019] Figure 3 It is a top - view three - dimensional structure schematic diagram of the clamping structure of the present utility model.

[0020] MAIN SYMBOL DESCRIPTION:

[0021] 1. DC relay body; 2. Mounting base; 3. Wire trough; 4. Anti-disengagement plate; 101. Bidirectional screw rod; 102. Moving plate; 103. Cover; 104. Link rod 1; 105. Guide rod; 201. Fixed clamping plate; 202. Movable clamping plate; 203. Cross bar; 204. L-shaped connecting rod; 205. Link rod 2; 206. Anti-slip pad. Detailed implementation mode

[0022] Next, in combination with the accompanying drawings and specific implementation modes, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be combined arbitrarily to form new embodiments.

[0023] Embodiment 1:

[0024] Please refer to Figures 1 - 3 , an arc-extinguishing DC relay in this embodiment includes:

[0025] DC relay body 1;

[0026] Dust-proof component, the dust-proof component includes brackets symmetrically and fixedly connected to both sides of the upper part of the DC relay body 1. A bidirectional screw rod 101 is rotatably connected between the two groups of brackets. Moving plates 102 are threadedly connected to the outer sides of both sides of the bidirectional screw rod 101. A cover 103 is arranged on the top of the DC relay body 1. Link rods 104 are symmetrically hinged between the cover 103 and the moving plates 102 through hinge parts. Guide rods 105 are fixedly connected to the brackets and are slidably connected between the guide rods 105 and the moving plates 102 on the same side. Wire troughs 3 are symmetrically opened at the lower part of one side of the cover 103 to facilitate the passing of wires. Anti-disengagement plates 4 are fixedly connected to the ends of the guide rods 105, which can prevent the moving plates 102 from disengaging from the guide rods 105.

[0027] On one side of the top of the DC relay body 1, fixed clamping plates 201 are symmetrically and fixedly connected through a fixing frame. A movable clamping plate 202 is arranged on one side of the fixed clamping plate 201. A cross bar 203 is fixedly connected to one side of the movable clamping plate 202 and is slidably connected to the DC relay body 1 through a guiding member. L-shaped connecting rods 204 are symmetrically fixedly connected to one side of the cover 103. Link rods 205 are hinged between the L-shaped connecting rods 204 and the cross bars 203 on the same side through hinge parts. The fixed clamping plates 201 and the movable clamping plates 202 are both designed in a semi-circular structure. Anti-slip pads 206 are additionally arranged on the opposite surfaces of the fixed clamping plates 201 and the movable clamping plates 202, which can stably and effectively clamp the wiring lines.

[0028] In the embodiment of the present application, the implementation principle of an arc-extinguishing DC relay is as follows: First, rotate the bidirectional lead screw 101. By rotating the bidirectional lead screw 101 and with the threaded connection and cooperation between the bidirectional lead screw 101 and the moving plate 102, as well as the sliding connection and cooperation between the moving plate 102 and the guide rod 105, it is possible to drive the two moving plates 102 to move towards each other. Utilizing the hinged action and cooperation between the moving plate 102, the cover 103 and the first connecting rod 104, it is possible to drive the cover 103 to move vertically upward, so that the wiring part at the top of the DC relay body 1 can be exposed. Then, connect the wire to the wiring part at the top of the DC relay body 1. Finally, rotate the bidirectional lead screw 101 in the reverse direction. At this time, the two moving plates 102 will move away from each other to drive the cover 103 to move vertically downward to close the wiring part, effectively avoiding the problem that it is difficult to dust-proof the wiring part, resulting in dust being easily accumulated and piled up at the wiring part, which will affect its normal conductivity. At the same time, during the vertical downward movement of the cover 103, it can also drive the two L-shaped connecting rods 204 to move downward together. Utilizing the hinged action between the L-shaped connecting rods 204, the cross bar 203 and the second connecting rod 205, and the sliding cooperation between the cross bar 203 and the guide member, it is possible to push the movable clamping plate 202 towards the fixed clamping plate 201, thereby clamping and fixing the circuit connected to the arc-extinguishing DC relay, and further preventing the loosening of the wiring part caused by pulling, ensuring the stability of the wiring part of the arc-extinguishing DC relay, and further improving the practical effect of the device. The anti-slip pads 206 provided can increase the friction between the movable clamping plate 202, the fixed clamping plate 201 and the wire, thereby ensuring the stable clamping of the circuit. When the cover 103 contacts the top of the DC relay body 1, at this time, the movable clamping plate 202 and the fixed clamping plate 201 can just clamp the circuit.

[0029] Embodiment 2:

[0030] On the basis of Embodiment 1, this embodiment is further improved in that: both sides of the lower part of the DC relay body 1 are fixedly connected with mounting seats 2, and screw holes are provided on the mounting seats 2, which is convenient for installing and fixing the DC relay body 1 by using bolts.

[0031] The above implementation manners are only the preferred implementation manners of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by those skilled in the art on the basis of the present invention belong to the protection scope required by the present invention.

Claims

1. An arc-extinguishing DC relay, characterized in that: include: DC relay body (1); A dustproof component, the dustproof component comprising brackets symmetrically fixedly connected to both sides of the upper part of a DC relay body (1), a bidirectional screw rod (101) being rotatably connected between two groups of the brackets, a movable plate (102) being threadedly connected to both sides of the exterior of the bidirectional screw rod (101), a cover (103) being arranged on the top of the DC relay body (1), a connecting rod (104) being symmetrically hinged between the cover (103) and the movable plate (102) via a hinge, a guide rod (105) being fixedly connected to the bracket, and the guide rod (105) being slidably connected to the movable plate (102) on the same side.

2. An arc-extinguishing DC relay as claimed in claim 1, characterized in that: A fixed clamp (201) is symmetrically fixedly connected to one side of the top of the DC relay body (1) via a fixing frame, a movable clamp (202) is provided on one side of the fixed clamp (201), a cross bar (203) is fixedly connected to one side of the movable clamp (202), and the cross bar (203) is slidably connected to the DC relay body (1) via a guide, and an L-shaped connecting rod (204) is symmetrically fixedly connected to one side of the cover (103), and a second connecting rod (205) is hinged between the L-shaped connecting rod (204) and the cross bar (203) on the same side via a hinge.

3. An arc-extinguishing DC relay as claimed in claim 1, characterized in that: Both sides of the lower part of the DC relay body (1) are fixedly connected to mounting seats (2), and screw holes are provided on the mounting seats (2).

4. An arc-extinguishing DC relay as claimed in claim 1, characterized in that: A wire threading groove (3) is symmetrically provided at a lower portion of one side of the cover (103).

5. An arc-extinguishing DC relay as claimed in claim 1, characterized in that: An anti-drop plate (4) is fixedly connected to the end of the guide rod (105).

6. An arc-extinguishing DC relay as claimed in claim 2, characterized in that: The fixed splint (201) and the movable splint (202) are both designed as semicircular structures.

7. An arc-extinguishing DC relay as claimed in claim 6, characterized in that: Anti-slip pads (206) are provided on the opposite surfaces of the fixed clamping plate (201) and the movable clamping plate (202).

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