Automobile winding resistor capable of improving welding performance

Abstract

The utility model discloses an automobile winding resistor capable of improving welding performance, which relates to an automobile winding resistor and comprises a winding resistor main body, two ends of the winding resistor main body are fixedly connected with outgoing lines, the bottom of the winding resistor main body is provided with a storage shell, and the winding resistor main body is matched and propped against the inner bottom wall of the storage shell. Two symmetrical first springs are arranged at the bottom of the storage shell, a connecting plate is arranged at the bottom of each first spring, and connecting boxes matched with the first springs are fixedly connected to the connecting plates; according to the utility model, through the mutual cooperation of the storage shell, the first spring and the connecting plate, a support can be provided for the winding resistor main body when welding flux and a circuit board are welded, so that a worker can more conveniently and effortlessly weld a pin at the bottom of a lead-out wire, the weldability between the pin and the circuit board is also improved to a certain extent, and the production efficiency is improved. And the service life of the winding resistor main body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of wire-wound resistors for automobiles, and particularly relates to a wire-wound resistor for automobiles with improved welding performance. Background Technique

[0002] With the rapid development of the automotive industry, especially the popularization of electric vehicles, the performance requirements for automotive components are increasing day by day. Welding, as a key link in the automotive manufacturing process, its performance directly affects the overall quality and safety of the vehicle. As an important part of the automotive electrical system, the wire-wound resistor not only undertakes electrical functions such as current regulation and voltage stabilization, but also plays an important role in the welding process. Therefore, developing a wire-wound resistor for automobiles that can significantly improve welding performance is of great significance for improving the automotive manufacturing level and product quality.

[0003] However, for multiple pins of traditional wire-wound resistors for automobiles, the height of the wire-wound resistor during welding cannot be adjusted. Only by manually picking up the resistor for welding can its height be changed, and the solder corresponding to the pins be welded to the circuit board one by one. In this way, the stability of the welded wire-wound resistor is poor, and the weldability is relatively low to a certain extent, which also makes the service life of the resistor relatively short to a certain extent.

[0004] Therefore, we designed a wire-wound resistor for automobiles with improved welding performance to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a wire-wound resistor for automobiles with improved welding performance to solve the problems raised in the above background technique.

[0006] To solve the above technical problems, a wire-wound resistor for automobiles with improved welding performance provided by the utility model includes a wire-wound resistor body. Both ends of the wire-wound resistor body are fixedly connected with lead wires. A storage shell is arranged at the bottom of the wire-wound resistor body. The wire-wound resistor body is in contact and abutted with the inner bottom wall of the storage shell. Two symmetrically arranged first springs are arranged at the bottom of the storage shell. A connecting plate is arranged at the bottom of each first spring. A connecting box adapted to the first spring is fixedly connected to the connecting plate. A fixing column is rotatably connected in each connecting box. The other end of each first spring is fixedly connected to the fixing column. A second bevel gear is fixedly sleeved on the bottom surface of each fixing column. A first bevel gear is meshed with one side of the second bevel gear. A regulating rod is fixedly connected to the other side of the first bevel gear. The regulating rod is arranged in the connecting box. A limiting member is arranged on each regulating rod.

[0007] Further, the limiting member includes a ratchet fixedly sleeved on the adjusting rod. A ratchet pawl is engaged with one side of the ratchet. An adjusting shell is arranged outside the ratchet. The adjusting shell is fixedly arranged on one side of the connection box. The ratchet pawl is rotatably arranged in the adjusting shell. A limiting block is also fixedly installed in the adjusting shell. The limiting block is located below the ratchet pawl and abuts against it, so that when the knob is rotated counterclockwise, the ratchet pawl and the ratchet are locked and cannot rotate, which can play a limiting role to prevent the first spring from rebounding during the process of welding the solder and affecting the weldability.

[0008] Further, the ratchet pawl rotates on a rotating shaft. The rotating shaft is fixedly installed in the adjusting shell. A second spring is arranged between the ratchet pawl and the adjusting shell. One end of the second spring abuts against the ratchet pawl. The setting of the rotating shaft can enable the normal movement of the ratchet pawl and avoid the situation of continuous limiting.

[0009] Further, the limiting member further includes a mounting seat fixed to the end of the ratchet pawl away from the second spring. A pull rod is rotatably connected to the mounting seat. The other end of the pull rod penetrates outside the adjusting shell. The settings of the mounting seat and the second spring can better enable the ratchet pawl to release the limit and facilitate the adjustment of the height of the lead wire.

[0010] Further, a circuit board for welding is arranged at the bottom of the connecting plate. The bottom surface of the connecting plate abuts against the circuit board. The setting of the connecting plate can better facilitate the support of the lead wire.

[0011] Further, the opposite ends of the two lead wires are respectively fixedly connected with a pin and a solder. The pin and the solder are both fixedly connected to the circuit board. The settings of the pin and the solder can better weld the points to be welded, so that the weldability between the solder and the part of the circuit board to be welded is enhanced with the cooperation of the above components.

[0012] Further, a sliding opening is also formed on one side of the adjusting shell. The adjusting rod is rotatably inserted into the sliding opening. The setting of the sliding opening can prevent the problem of movement interference during the rotation of the adjusting rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: Through the mutual cooperation of the storage shell, the first spring and the connecting plate, a support can be provided for the wire-wound resistor body when welding the solder and the circuit board, so that it is more convenient and labor-saving for personnel to weld the pins at the bottom of the lead wires. To a certain extent, the weldability between the pins and the circuit board is also improved, and the service life of the wire-wound resistor body is prolonged.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: The height of the storage shell is adjusted by the height of the lead wire. If the length of the lead wire is too long, rotating the adjusting rod clockwise by one grid can stretch and reduce the number of strands of the first spring, so that the height of the storage shell can be lowered to adapt to the lead wire in a shorter situation for welding. When the length of the lead wire is long and the bending height is high, the pull rod can be pulled outwards to compress the second spring to cancel the limiting effect of the pawl, and then the adjusting rod can be rotated counterclockwise to increase the number of strands of the first spring to raise the height of the storage shell so as to adapt to lead wires of various heights, which improves the weldability to a certain extent and is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall external structure of the present utility model;

[0016] Figure 2 is Figure 1 an enlarged view of part A of

[0017] Figure 3 is a schematic diagram of the inside of the connection box of the present utility model;

[0018] Figure 4 is a schematic diagram of the inside of the adjusting shell of the present utility model.

[0019] In the figure: 1. wire-wound resistor body; 2. lead wire; 3. storage shell; 4. first spring; 5. connection box; 6. adjusting shell; 7. adjusting rod; 8. ratchet; 9. rotating shaft; 10. pawl; 11. second bevel gear; 12. fixed column; 13. first bevel gear; 14. mounting seat; 15. pull rod; 16. second spring; 17. sliding opening; 18. connecting plate; 19. pin; 20. solder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4, the present utility model provides a technical solution: a wire-wound resistor for automobiles with improved welding performance, including a wire-wound resistor body 1. Both ends of the wire-wound resistor body 1 are fixedly connected with lead wires 2. A storage shell 3 is arranged at the bottom of the wire-wound resistor body 1. The wire-wound resistor body 1 is in contact and cooperation with the inner bottom wall of the storage shell 3. Two symmetrically arranged first springs 4 are arranged at the bottom of the storage shell 3. A connecting plate 18 is arranged at the bottom of each first spring 4. A connection box 5 adapted to the first spring 4 is fixedly connected to the connecting plate 18. A fixed column 12 is rotatably connected in each connection box 5. The other end of each first spring 4 is fixedly connected to the fixed column 12. A second bevel gear 13 is fixedly sleeved on the bottom surface of each fixed column 12. A first bevel gear 11 is meshed with one side of the second bevel gear 13. The other side of the first bevel gear 11 is fixedly connected with an adjusting rod 7. The adjusting rod 7 is arranged in the connection box 5. A limiting member is arranged on each adjusting rod 7.

[0022] The limiting member includes a ratchet 8 fixedly sleeved on the adjusting rod 7. A pawl 10 is meshed with one side of the ratchet 8. An adjusting shell 6 is arranged outside the ratchet 8. The adjusting shell 6 is fixedly arranged on one side of the connection box 5. The pawl 10 is rotatably arranged in the adjusting shell 6. A limiting block is also fixedly installed in the adjusting shell 6. The limiting block is located below the pawl 10 and abuts against it.

[0023] The pawl 10 rotates on a rotating shaft 9. The rotating shaft 9 is fixedly installed in the adjusting shell 6. A second spring 16 is arranged between the pawl 10 and the adjusting shell 6. One end of the second spring 16 abuts against the pawl 10.

[0024] The limiting member further includes a mounting seat 14 fixed to the end of the pawl 10 away from the second spring 16. A pull rod 15 is rotatably connected to the mounting seat 14. The other end of the pull rod 15 penetrates outside the adjusting shell 6.

[0025] A circuit board for welding is arranged at the bottom of the connecting plate 18. The bottom surface of the connecting plate 18 abuts against the circuit board.

[0026] The opposite ends of the two lead wires 2 are respectively fixedly connected with a pin 19 and a solder 20. The pin 19 and the solder 20 are both fixedly connected to the circuit board.

[0027] During specific implementation, through the mutual cooperation of the storage shell 3, the first spring 4, and the connecting plate 18, a support can be provided for the winding resistor body 1 when welding the solder 20 to the circuit board, making it more convenient and labor-saving for personnel to weld the pins 19 at the bottom of the lead wire 2. Subsequently, rotate the adjusting rod 7. Each time it is rotated one grid, the number of strands of the first spring 4 can be stretched and reduced, causing the height of the storage shell 3 to decrease to adapt to the welding of the lead wire 2 in the case of a shorter length. When the length of the lead wire 2 is longer and the bending height is higher, the limiting effect of the pawl 10 can be cancelled by pulling the pull rod 15 outward to compress the second spring 16. Subsequently, the adjusting rod 7 can be rotated counterclockwise to increase the number of strands of the first spring 4 to raise the height of the storage shell 3 to facilitate adaptation to lead wires 2 of various heights, improving the weldability to a certain extent and being more convenient to use.

[0028] Referring to Figures 1-4 As shown, a sliding opening 17 is also provided on one side of the adjusting shell 6. The adjusting rod 7 is rotatably inserted into the sliding opening 17. The setting of the sliding opening 17 can better prevent the adjusting rod 7 from having movement interference problems when rotating.

[0029] In addition, it should be noted that the material of the storage shell 3 is a ceramic baffle. The ceramic baffle has good heat resistance and corrosion resistance, and can effectively resist high-temperature sparks and splashing metals. During the welding process, it can, to a certain extent, resist a part of the splashing solder 20 for the winding resistor body 1 and play a certain protective role for the winding resistor body 1; the material of the connecting plate 18 is carbon fiber. Carbon fiber is a special composite material composed of carbon elements, with the advantages of high strength, high modulus, light weight, and strong corrosion resistance, and will not cause certain compressive damage to the circuit board during the support process.

[0030] Working principle: Place the winding resistor body 1 in the storage case 3. Then place the connecting plate 18 on the circuit board. Bend the lead wire 2 to align the pin 19 with the solder joint on the circuit board. Subsequently, adjust the height of the storage case 3 according to the height of the lead wire 2. If the length of the lead wire 2 is too long, rotate the adjusting rod 7. The first bevel gear 11 at the other end of the adjusting rod 7 meshes with the second bevel gear 13 and drives the second bevel gear 13 to rotate. When rotating the adjusting rod 7 clockwise, it drives the ratchet 8 to rotate. Each rotation can stretch and reduce the number of strands of the first spring 4, which can lower the height of the storage case 3 to adapt to the shorter lead wire 2 for welding. Since the pawl 10 abuts against one of the ratchet teeth of the ratchet 8, when rotating counterclockwise, the pawl 10 will be stuck with the ratchet 8 and cannot rotate, which can play a limiting role to prevent the first spring 4 from rebounding during the welding of the solder 20 and affecting the weldability. When the length of the lead wire 2 is long and the bending height is high, pull the pull rod 15 outwards to compress the second spring 16 to cancel the limiting effect of the pawl 10. Then, rotate the adjusting rod 7 counterclockwise to increase the number of strands of the first spring 4 to raise the height of the storage case 3 to facilitate adapting to lead wires 2 of various heights, improving the weldability to a certain extent and making the welding more firm, and increasing the service life of the winding resistor body 1. Finally, when the welding is completed, rotate the adjusting rod 7 again to compress the first spring 4 so that the storage case 3 does not abut against the winding resistor body 1, and then pull out the storage case 3.

Claims

1. A wire-wound resistor for automobiles with improved welding performance, comprising a wire-wound resistor body (1), both ends of the wire-wound resistor body (1) being fixedly connected with lead wires (2), characterized in that: A storage shell (3) is provided at the bottom of the wire-wound resistor body (1), the wire-wound resistor body (1) and the inner bottom wall of the storage shell (3) are matched and abutted against each other, and two mutually symmetrical first springs (4) are provided at the bottom of each first spring (4), and a connecting plate (18) is provided at the bottom of each first spring (4), and a connecting box (5) matched with the first spring (4) is fixedly connected to the connecting plate (18), and a fixing column (12) is rotatably connected in each connecting box (5), and the other end of each first spring (4) is fixedly connected to the fixing column (12), and the bottom surface of each fixing column (12) is fixedly sleeved with a first bevel gear (13), one side of the first bevel gear (13) is meshed with a second bevel gear (11), and the other side of the second bevel gear (11) is fixedly connected with an adjusting rod (7), and the adjusting rod (7) is arranged in the connecting box (5), and each adjusting rod (7) is provided with a limiting member.

2. A wire wound resistor for automobiles with improved welding performance as claimed in claim 1, characterized in that: The limiting member comprises a ratchet (8) fixedly sleeved on the adjusting rod (7), a pawl (10) meshing on one side of the ratchet (8), an adjusting shell (6) being arranged on the outer side of the ratchet (8), the adjusting shell (6) being fixedly arranged on one side of the connecting box (5), the pawl (10) being rotatably arranged in the adjusting shell (6), and a limiting block being fixedly installed in the adjusting shell (6), the limiting block being located below the pawl (10) and abutting against the pawl (10).

3. A wire wound resistor for automobiles with improved welding performance as claimed in claim 2, characterized in that: The ratchet pawl (10) rotates on the rotating shaft (9), and the rotating shaft (9) is fixedly installed in the adjusting shell (6). A second spring (16) is arranged between the ratchet pawl (10) and the adjusting shell (6), and one end of the second spring (16) abuts against the ratchet pawl (10).

4. A wire wound resistor for automobiles with improved welding performance as claimed in claim 3, characterized in that: The limiting member also includes a mounting seat (14) fixed to one end of the pawl (10) away from the second spring (16), and a pull rod (15) is rotatably connected to the mounting seat (14), and the other end of the pull rod (15) passes through the outside of the adjustment shell (6).

5. The automotive wire-wound resistor with improved welding performance as claimed in claim 1, characterized in that: A circuit board for welding is arranged at the bottom of the connecting plate (18), and the bottom surface of the connecting plate (18) abuts against the circuit board.

6. The automotive wire-wound resistor with improved welding performance as claimed in claim 1, characterized in that: The opposite ends of the two lead wires (2) are respectively fixedly connected with a pin (19) and a solder (20), and the pin (19) and the solder (20) are both fixedly connected to the circuit board.

7. The automotive wire-wound resistor with improved welding performance as claimed in claim 2, characterized in that: A sliding opening (17) is also provided on one side of the adjusting shell (6), and the adjusting rod (7) is rotatably inserted into the sliding opening (17).

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