Air-cooled direct-current relay

Abstract

The utility model relates to the technical field of direct-current relays, and discloses an air-cooled direct-current relay which comprises an upper box body, the bottom of the upper box body is fixedly connected with a lower box body, the top of the lower box body is fixedly connected with a placing plate through a connecting block, and the top of the placing plate is provided with a direct-current relay body. By arranging the air cooling assembly, a sliding frame is pushed towards the interior of the lower box body along a sliding groove, so that the sliding frame extrudes a piston abutting rod to move towards the interior of a sleeve, air in the sleeve moves towards the interior of an air feeding pipe, and the air is extruded to one side of a spring rod through an L-shaped pipe; the spring rod drives the abutting piece to abut against the surface of the sliding frame, when the sliding frame moves to the working position, the abutting piece is just inserted into the limiting groove in the sliding frame, the sliding frame is fixed and limited, the situation that the sliding frame is separated from the lower box body due to vibration of the miniature fan is avoided, and the working stability of the miniature fan is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of direct current relays, in particular to an air-cooled direct current relay. Background Art

[0002] A DC relay is a circuit switching device that can perform mechanical drive using electromagnetic principles and can transmit current signals. Electric vehicles such as hybrid vehicles, fuel cell vehicles, golf carts, and electric forklifts are equipped with electric vehicle relays to supply battery energy to energy generators and electrical components. This electric vehicle relay is a very important core part of electric vehicles.

[0003] A fast heat dissipation magnetic latching relay is disclosed in a Chinese utility model patent with announcement number CN220290711U. By arranging micro-fans, wind shields, air outlets, auxiliary vertical plates, air ducts and air cavities, when the cold air generated after the two rows of micro-fans are started is sent into the air cavity through the inside of the air duct, the cold air will enter the upper half of the relay through the air outlet to quickly blow away the heat generated inside the relay from the inside of the heat dissipation opening. The internal temperature of the relay is cooled and dissipated by the cold air from bottom to top. Compared with the previous operation of directly using the heat dissipation holes for heat dissipation and cooling, the setting of the air cooling structure can speed up the progress of temperature control of the entire magnetic latching relay, ensure that the entire magnetic latching relay can subsequently achieve normal operation, and facilitate the utility model to solve the technical problems raised in the above-mentioned background technology.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: the device achieves cooling and heat dissipation of the inner wall of the relay by blowing air from bottom to top, but the micro fan is connected by snap-fitting during installation and maintenance, and the micro fan is prone to vibration during operation, so that the bracket at the opening on the snap-fitting side may gradually slide off with the vibration, resulting in a poor limiting effect on the micro fan. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, the utility model provides an air-cooled DC relay.

[0006] The utility model is implemented by the following technical scheme: an air-cooled DC relay, comprising an upper box body, the bottom of the upper box body is fixedly connected to a lower box body, the top of the lower box body is fixedly connected to a placement plate through a connecting block, the top of the placement plate is installed with a DC relay body, and air-cooling components are installed on both sides of the lower box body.

[0007] The air cooling component includes a sliding frame, and micro fans are installed at equal intervals inside the sliding frame. One side of the micro fan is connected to an air supply pipe, and the other side of the sliding frame is abutted with a piston abutment rod, one end of the piston abutment rod is slidably connected to a sleeve, one end of the sleeve is connected to the air supply pipe, the surface of the air supply pipe is connected to two L-shaped tubes, one end of the L-shaped tube is slidably connected to a spring rod, and one end of the spring rod is fixedly connected to an abutment member.

[0008] As a further improvement of the above scheme, the top of the air supply pipe is provided with air outlets at equal intervals, and the top of the lower box is provided with air supply outlets at equal intervals, so as to facilitate the delivery of cold air generated by the micro fan into the upper box to cool the DC relay body.

[0009] As a further improvement of the above solution, sliding grooves are respectively provided on both sides of the lower box body, and the sliding frame is slidably arranged in the sliding grooves, so that the sliding frame can be moved and installed conveniently.

[0010] As a further improvement of the above solution, an H-shaped groove is provided inside the lower box body, and the two ends of the air supply pipe are respectively fixedly connected to the front and back sides of the inner wall of the H-shaped groove, thereby ensuring the normal operation of the air supply pipe.

[0011] As a further improvement of the above solution, one side of the inner wall of the sliding groove is provided with openings at equal intervals for the piston abutment rod to move, thereby ensuring the normal movement of the piston abutment rod.

[0012] As a further improvement of the above scheme, the abutment member includes an abutment plate, a handle is fixedly connected to the surface of the abutment plate, one side of the abutment plate is fixedly connected to one end of the spring rod, a movable groove is provided on the surface of the lower box body for the abutment member to slide, and limiting grooves matching the abutment member are provided on both sides of the sliding frame, thereby ensuring the normal operation of the abutment member and facilitating the fixed limiting of the sliding frame.

[0013] As a further improvement of the above solution, heat dissipation ports are provided on both sides of the upper box body, and a door is installed on the front of the upper box body by bolts. The heat dissipation ports facilitate heat dissipation, and the door facilitates the installation of the DC relay body.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The utility model sets an air cooling component to push the sliding frame along the sliding groove to the inside of the lower box body, so that the sliding frame squeezes the piston and the abutment rod moves toward the inside of the sleeve, so that the air in the sleeve moves toward the inside of the air supply pipe. The air in the air supply pipe increases, so that the air is squeezed on one side of the spring rod through the L-shaped tube, and the spring rod carries the abutment piece to abut on the surface of the sliding frame. When the sliding frame moves to the working position, the abutment piece is just inserted into the limit groove on the sliding frame, and the sliding frame is fixed and limited, thereby avoiding the situation where the sliding frame is separated from the lower box body due to the vibration of the micro fan, and improving the stability of the micro fan when working.

[0016] 2. The utility model sets an air cooling component. After the sliding frame is installed, the micro fan is started, so that the cold air is transported to the interior of the upper box through the air outlet on the air supply pipe and the air supply outlet on the top of the lower box. The cold air then acts on the DC relay body through the placement plate to cool the DC relay body. In conjunction with the heat dissipation port on the upper box, it not only facilitates the heat exchange between the inside of the DC relay body and the outside air, but also can assist the air cooling component to quickly blow away the heat generated inside the DC relay body. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a structural schematic diagram of the lower box body, the upper box body and the placement plate of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the piston abutting rod, sleeve and air delivery pipe of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the sliding frame, micro fan and air supply pipe of the utility model.

[0021] Description of main symbols:

[0022] 1. Upper box body; 2. Lower box body; 3. Placement plate; 4. DC relay body; 5. Sliding frame; 6. Micro fan; 7. Air supply pipe; 8. Piston abutment rod; 9. Sleeve; 10. Air supply pipe; 11. L-shaped pipe; 12. Spring rod; 13. Abutment piece. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0024] Example:

[0025] Please combine Figure 1-4 A wind-cooled DC relay of the present embodiment includes an upper box body 1, both sides of the upper box body 1 are provided with heat dissipation ports, a door is installed on the front of the upper box body 1 by bolts, the heat dissipation ports are convenient for heat dissipation, and the door is convenient for installing a DC relay body 4, the bottom of the upper box body 1 is fixedly connected with a lower box body 2, the top of the lower box body 2 is fixedly connected with a placement plate 3 by a connecting block, the placement plate 3 is a mesh plate, which is convenient for wind to blow on the surface of the DC relay body 4, the DC relay body 4 is installed on the top of the placement plate 3, and both sides of the lower box body 2 are installed with air cooling components.

[0026] The air cooling component is used to dissipate heat for the DC relay body 4. The air cooling component includes a sliding frame 5. Sliding grooves are respectively provided on both sides of the lower box body 2. The sliding frame 5 is slidably arranged in the sliding grooves to facilitate the movement and installation of the sliding frame 5. A filter is installed on one side of the sliding frame 5 to prevent dust from entering the device and reduce the influence of dust on the operation of the DC relay body 4. Micro fans 6 are evenly installed inside the sliding frame 5. One side of the micro fan 6 is connected to an air supply pipe 7. Air outlets are evenly spaced on the top of the air supply pipe 7. Air supply ports are evenly spaced on the top of the lower box body 2 to facilitate the cold air generated by the micro fan 6 to be sent to the upper box body 1 to cool the DC relay body 4. A piston abutment rod 8 is abutted on the other side of the sliding frame 5. Through holes for the movement of the piston abutment rod 8 are evenly spaced on one side of the inner wall of the sliding groove to ensure the activity For the normal movement of the plug abutment rod 8, one end of the piston abutment rod 8 is slidably connected with a sleeve 9, and one end of the sleeve 9 is connected with an air supply pipe 10. An H-shaped groove is provided inside the lower box body 2, and both ends of the air supply pipe 10 are fixedly connected to the front and back sides of the inner wall of the H-shaped groove, respectively, to ensure the normal operation of the air supply pipe 10. The surface of the air supply pipe 10 is connected with two L-shaped tubes 11, and one end of the L-shaped tube 11 is slidably connected with a spring rod 12, and one end of the spring rod 12 is fixedly connected with an abutment 13, which includes an abutment plate, and a handle is fixedly connected to the surface of the abutment plate, and one side of the abutment plate is fixedly connected to one end of the spring rod 12. A moving groove for the sliding of the abutment 13 is provided on the surface of the lower box body 2, and limiting grooves adapted to the abutment 13 are provided on both sides of the sliding frame 5, to ensure the normal operation of the abutment 13 and facilitate the fixed limiting of the sliding frame 5.

[0027] The implementation principle of an air-cooled DC relay in the embodiment of the present application is as follows: when installing the micro-blower 6, the sliding frame 5 is pushed toward the interior of the lower housing 2 along the sliding groove, so that the sliding frame 5 squeezes the piston abutment rod 8 to move toward the interior of the sleeve 9, so that the air in the sleeve 9 moves toward the interior of the air supply pipe 10. The air in the air supply pipe 10 increases, so that the air is squeezed on one side of the spring rod 12 through the L-shaped tube 11, and the spring rod 12 abuts against the surface of the sliding frame 5 with the abutment 13. When the sliding frame 5 moves to the working position, the abutment 13 is just inserted into the limit groove on the sliding frame 5 under the action of the spring rod 12, and the sliding frame 5 is fixed and limited, thereby avoiding the situation where the sliding frame 5 is separated from the lower housing 2 due to the vibration of the micro-blower 6, and improving the stability of the micro-blower 6 during operation.

[0028] After the sliding frame 5 is installed, the micro fan 6 is started, so that the cold air is transported to the interior of the upper box body 1 through the air outlet on the air supply pipe 7 and the air supply outlet on the top of the lower box body 2, and the cold air then acts on the DC relay body 4 through the placement plate 3 to cool the DC relay body 4. In conjunction with the heat dissipation port on the upper box body 1, it not only facilitates the heat exchange between the interior of the DC relay body 4 and the outside air, but also can assist the air cooling component to quickly blow away the heat generated inside the DC relay body 4.

[0029] The above-mentioned implementation modes are only preferred implementation modes 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 technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An air-cooled DC relay, characterized in that: It comprises an upper box body (1), the bottom of the upper box body (1) is fixedly connected to a lower box body (2), the top of the lower box body (2) is fixedly connected to a placement plate (3) via a connection block, a DC relay body (4) is installed on the top of the placement plate (3), and air cooling components are installed on both sides of the lower box body (2); The air cooling component comprises a sliding frame (5), micro fans (6) are installed at equal intervals inside the sliding frame (5), one side of the micro fans (6) is connected to an air supply pipe (7), the other side of the sliding frame (5) is abutted against a piston abutment rod (8), one end of the piston abutment rod (8) is slidably connected to a sleeve (9), one end of the sleeve (9) is connected to an air supply pipe (10), the surface of the air supply pipe (10) is connected to two L-shaped tubes (11), one end of the L-shaped tube (11) is slidably connected to a spring rod (12), and one end of the spring rod (12) is fixedly connected to an abutment member (13).

2. An air-cooled DC relay as claimed in claim 1, characterized in that: The top of the air supply pipe (7) is provided with air outlets at equal intervals, and the top of the lower box body (2) is provided with air supply outlets at equal intervals.

3. An air-cooled DC relay as claimed in claim 1, characterized in that: Sliding grooves are respectively provided on both sides of the lower box body (2), and the sliding frame (5) is slidably arranged in the sliding grooves.

4. The air-cooled DC relay according to claim 1, characterized in that: An H-shaped groove is provided inside the lower box body (2), and two ends of the air supply pipe (10) are respectively fixedly connected to the front and back sides of the inner wall of the H-shaped groove.

5. The air-cooled DC relay according to claim 3, characterized in that: One side of the inner wall of the sliding groove is provided with openings at equal intervals for the piston abutting rod (8) to move.

6. The air-cooled DC relay according to claim 1, characterized in that: The abutment member (13) comprises an abutment plate, a handle is fixedly connected to the surface of the abutment plate, one side of the abutment plate is fixedly connected to one end of the spring rod (12), a movable groove for the abutment member (13) to slide is provided on the surface of the lower box body (2), and limiting grooves matching the abutment member (13) are provided on both sides of the sliding frame (5).

7. The air-cooled DC relay according to claim 1, characterized in that: Both sides of the upper box body (1) are provided with heat dissipation openings, and a door is installed on the front side of the upper box body (1) by means of bolts.

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