Speed regulating resistance and electronic fan for vehicle

Abstract

This application provides a speed-regulating resistor and an automotive electric fan. The speed-regulating resistor includes a resistor body, an insulating outer sheath, a first electronic pin, a second electronic pin, and a third electronic pin. A resistance wire is connected to a ceramic tube frame. The ceramic tube frame has a heat dissipation through-hole, which allows gas to pass through and dissipate heat from the ceramic tube frame and the resistance wire via airflow. The insulating outer sheath is fitted around the outer periphery of the ceramic tube frame and covers the resistance wire to provide external insulation. The first electronic pin is electrically connected to the left end of the resistance wire. The second electronic pin is electrically connected to the right end of the resistance wire. The third electronic pin is connected to the first electronic pin and is used to electrically connect to external components. The heat dissipation effect is achieved through the heat dissipation through-hole, and the ceramic tube frame can also conduct heat, thereby quickly conducting the heat generated by the resistance wire. The insulating outer sheath provides insulation while also accelerating the heat dissipation of the resistor body, thus improving the heat dissipation effect of the speed-regulating resistor.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive electric fans, and more particularly to a speed-regulating resistor and an automotive electric fan. Background Technology

[0002] With the development of technology, automotive electric fans are used in automobiles. When the engine generates too much heat, the automotive electric fan will start to remove the hot air and help the engine maintain a proper temperature. As part of the automotive electric fan, the speed control resistor adjusts the fan speed by changing the current of the automotive electric fan. In the existing technology, the existing speed control resistor includes a resistor body and multiple electronic pins, which are connected to different positions of the resistor body. However, the resistor body is solid, which results in poor heat dissipation effect of the existing speed control resistor. Utility Model Content

[0003] The purpose of this invention is to provide a speed-regulating resistor and an automotive electric fan. The resistor body includes a ceramic tube frame and a resistance wire. The resistance wire is connected to the ceramic tube frame. The ceramic tube frame has heat dissipation holes that extend along the length of the ceramic tube frame and penetrate it. The heat dissipation holes allow gas to pass through, enabling airflow-type heat dissipation for the ceramic tube frame and the resistance wire. An insulating outer sheath is fitted around the outer periphery of the ceramic tube frame and covers the resistance wire to provide external insulation. A first electronic pin is located on the left side of the ceramic tube frame and is electrically connected to the left end of the resistance wire. A second electronic pin is located on the right side of the ceramic tube frame and is electrically connected to the right end of the resistance wire. A third electronic pin is connected to the first electronic pin and bent horizontally. The third electronic pin is used to electrically connect to external components. Heat dissipation is achieved through the heat dissipation holes, and the ceramic tube frame can also conduct heat, thus quickly conducting the heat generated by the resistance wire. Simultaneously, the insulating outer sheath provides insulation while also accelerating the heat dissipation of the resistor body, improving the heat dissipation effect of the speed-regulating resistor and significantly extending its service life.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a speed-regulating resistor, applied to an automotive electric fan, the speed-regulating resistor comprising:

[0005] The resistor body includes a ceramic tube frame and a resistance wire; the resistance wire is connected to the ceramic tube frame; the ceramic tube frame is provided with a heat dissipation hole, which extends along the length of the ceramic tube frame and penetrates the ceramic tube frame; the heat dissipation hole is used for gas to pass through, and the gas can dissipate heat from the ceramic tube frame and the resistance wire in an airflow manner.

[0006] An insulating outer sheath is fitted around the outer periphery of the ceramic tube frame and covers the resistance wire to provide external insulation for the resistance wire.

[0007] The first electronic pin is located on the left side of the ceramic tube frame and is electrically connected to the left end of the resistance wire;

[0008] The second electronic pin is located on the right side of the ceramic tube frame and is electrically connected to the right end of the resistance wire;

[0009] A third electronic pin is connected to the first electronic pin and bent horizontally; the third electronic pin is used for electrical connection to external components.

[0010] Optionally, the ceramic tube frame includes a base portion and an arc portion, wherein the arc portion is connected to the base portion and surrounds the base portion to form the heat dissipation through hole;

[0011] The base portion is arranged in a flat plate shape, and the arc portion extends in an arc shape from the front end to the rear end of the base portion.

[0012] Optionally, the resistance wire is sleeved on the ceramic tube skeleton and extends spirally along the length of the ceramic tube skeleton.

[0013] Optionally, the resistance wire exchanges heat with the base portion and the arc portion respectively, and the heat conducted through the base portion and the arc portion is carried away by gas in the heat dissipation holes.

[0014] Optionally, the insulating outer sheath is located on the side of the ceramic tube frame facing the resistance wire and is arranged around the ceramic tube frame. The insulating outer sheath is coated on the outer periphery of the ceramic tube frame and covers the resistance wire.

[0015] Optionally, the insulating outer sheath is an outer sheath formed of silicone resin paint.

[0016] Optionally, the connection end of the resistance wire extends outward along the end of the ceramic tube skeleton and is connected to the third electronic pin.

[0017] Optionally, the third electronic pin is integrally connected to the first electronic pin, the first electronic pin extends in the vertical direction and can be plugged into an external circuit board, and the third electronic pin is bent from the side wall of the first electronic pin in the front-back direction.

[0018] Optionally, the second electronic pin extends vertically and can be plugged into an external circuit board;

[0019] The third electronic pin, the second electronic pin, and the first electronic pin are all formed by stamping cold-rolled steel.

[0020] To achieve the above objectives, this utility model provides the following technical solution: an automotive electronic fan, including the speed regulating resistor.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] This utility model provides a speed-regulating resistor and an automotive electric fan. The resistor body includes a ceramic tube frame and a resistance wire. The resistance wire is connected to the ceramic tube frame. The ceramic tube frame has heat dissipation holes that extend along the length of the ceramic tube frame and penetrate it. The heat dissipation holes allow gas to pass through, enabling airflow-type heat dissipation for the ceramic tube frame and the resistance wire. An insulating outer sheath is fitted around the outer periphery of the ceramic tube frame and covers the resistance wire to provide external insulation. A first electronic pin is located on the left side of the ceramic tube frame and is electrically connected to the left end of the resistance wire. A second electronic pin is located on the right side of the ceramic tube frame and is electrically connected to the right end of the resistance wire. A third electronic pin is connected to the first electronic pin and bent horizontally. The third electronic pin is used to electrically connect to external components. The heat dissipation effect is achieved through the heat dissipation holes, and the ceramic tube frame can also conduct heat, thereby quickly conducting the heat generated by the resistance wire. At the same time, the insulating outer sheath not only provides insulation but also accelerates the heat dissipation capacity of the resistor body, improving the heat dissipation effect of the speed-regulating resistor and greatly extending its service life. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0025] Figure 1 A schematic diagram of a speed-regulating resistor according to an embodiment of this application is shown.

[0026] Figure 2 A front view of a speed-regulating resistor according to an embodiment of this application is shown.

[0027] Figure 3 A side view of a speed-regulating resistor according to an embodiment of this application is shown.

[0028] Figure Labels

[0029] 100. Speed ​​regulating resistor;

[0030] 10. Resistor body; 11. Ceramic tube frame; 11a. Heat dissipation hole; 111. Base; 112. Arc-shaped part;

[0031] 20. Insulating outer sheath;

[0032] 30. First electronic pin;

[0033] 40. Second electronic pin;

[0034] 50. Third electronic pin. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0036] Please refer to the attached document. Figures 1-3 This application provides a speed-regulating resistor 100, which is applied to an automotive electric fan. The speed-regulating resistor 100 adjusts the fan speed by changing the current of the automotive electric fan.

[0037] Please refer to the attached document. Figures 1-3 In this embodiment, the speed-regulating resistor 100 includes a resistor body 10, an insulating outer sheath 20, a first electronic pin 30, a second electronic pin 40, and a third electronic pin 50. The resistor body 10 includes a ceramic tube frame 11 and a resistance wire. The resistance wire is connected to the ceramic tube frame 11. The ceramic tube frame 11 is provided with a heat dissipation hole 11a, which extends along the length of the ceramic tube frame 11 and penetrates through it. The heat dissipation hole 11a is used for gas to pass through, and the gas can dissipate heat from the ceramic tube frame 11 and the resistance wire through airflow. The insulating outer sheath 20 is sleeved on the outer periphery of the ceramic tube frame 11 and covers the resistance wire to provide external insulation for the resistance wire. The first electronic pin 30 is located on the left side of the ceramic tube frame 11 and is electrically connected to the left end of the resistance wire; the second electronic pin 40 is located on the right side of the ceramic tube frame 11 and is electrically connected to the right end of the resistance wire; the third electronic pin 50 is connected to the first electronic pin 30 and is bent along the horizontal direction. The third electronic pin 50 is used to electrically connect to external components. The heat dissipation effect is achieved based on the heat dissipation through hole 11a. The ceramic tube frame 11 can also conduct heat, thereby quickly conducting the heat energy generated by the resistance wire. At the same time, the insulating outer sheath 20 not only provides insulation but also accelerates the heat dissipation capacity of the resistor body 10, improving the heat dissipation effect of the speed-regulating resistor 100 and greatly extending the service life of the speed-regulating resistor 100.

[0038] Please refer to the attached document. Figures 1-3In this embodiment, the resistor body 10 includes a ceramic tube frame 11 and a resistance wire; the resistance wire is connected to the ceramic tube frame 11; the ceramic tube frame 11 is provided with a heat dissipation hole 11a, which extends along the length of the ceramic tube frame 11 and penetrates through the ceramic tube frame 11; the heat dissipation hole 11a is used for gas to pass through, and the gas can dissipate heat from the ceramic tube frame 11 and the resistance wire in an airflow manner; the space through the heat dissipation hole 11a makes the ceramic tube frame 11 hollow. An insulating outer sheath 20 is sleeved on the outer periphery of the ceramic tube frame 11 and covers the resistance wire to provide external insulation for the resistance wire; based on the heat dissipation effect achieved by the heat dissipation hole 11a, the ceramic tube frame 11 can also conduct heat, thereby quickly conducting the heat energy generated by the resistance wire. At the same time, the insulating outer sheath 20 not only provides insulation but also accelerates the heat dissipation capacity of the resistor body 10, improving the heat dissipation effect of the speed-regulating resistor 100 and greatly extending the service life of the speed-regulating resistor 100.

[0039] The first electronic pin 30 is located on the left side of the ceramic tube frame 11 and is electrically connected to the left end of the resistance wire; the second electronic pin 40 is located on the right side of the ceramic tube frame 11 and is electrically connected to the right end of the resistance wire; the third electronic pin 50 is connected to the first electronic pin 30 and is bent along the horizontal direction. The third electronic pin 50 is used to electrically connect to external components so that the resistor body 10 can be electrically connected to external components through the first electronic pin 30, the second electronic pin 40 and the third electronic pin 50, thereby facilitating the resistor body 10 to be used in the circuit for limiting current, dividing voltage, converting energy and protecting the circuit.

[0040] Please refer to the attached document. Figures 1-3 In this embodiment, the ceramic tube frame 11 includes a base portion 111 and an arc portion 112. The arc portion 112 is connected to the base portion 111 and forms a heat dissipation through hole 11a with the base portion 111. The base portion 111 is arranged in a flat plate shape, and the arc portion 112 extends in an arc shape from the front end to the rear end of the base portion 111 so that the ceramic tube frame 11 is hollow. The heat dissipation effect is achieved based on the heat dissipation through hole 11a. The ceramic tube frame 11 can also conduct heat, thereby quickly conducting the heat energy generated by the resistance wire.

[0041] Please refer to the attached document. Figures 1-3 In this embodiment, the resistance wire is sleeved on the ceramic tube frame 11 and extends spirally along the length of the ceramic tube frame 11 so that the resistance wire can contact multiple different positions of the ceramic tube frame 11, thereby further improving the heat dissipation effect of the resistance wire.

[0042] Please refer to the attached document. Figures 1-3In this embodiment, the resistance wire exchanges heat with the base portion 111 and the arc portion 112 respectively. The heat conducted through the base portion 111 and the arc portion 112 is carried away by gas in the heat dissipation hole 11a, which realizes efficient heat dissipation and dispersion of the resistance wire, avoids local overheating, and improves the thermal stability and service life of the speed regulating resistor 100.

[0043] Please refer to the attached document. Figures 1-3 In this embodiment, the insulating outer sheath 20 is located on the side of the ceramic tube frame 11 facing the resistance wire and is arranged around the ceramic tube frame 11. The insulating outer sheath 20 is coated on the outer periphery of the ceramic tube frame 11 and covers the resistance wire, so that the ceramic tube frame 11 can provide insulation while also accelerating the heat dissipation of the resistor, and at the same time, it will not catch fire. Optionally, the insulating outer sheath 20 is an outer sheath formed of silicone resin paint. Silicone resin has weather resistance, heat resistance, adhesion, chemical resistance, electrical insulation and decorative properties.

[0044] Please refer to the attached document. Figures 1-3 In this embodiment, the connection end of the resistance wire extends outward along the end of the ceramic tube frame 11 and is connected to the third electronic pin 50 so that the resistance wire can limit the current to the external components connected to the third electronic pin 50.

[0045] Please refer to the attached document. Figures 1-3 In this embodiment, the third electronic pin 50 is integrally connected to the first electronic pin 30. The first electronic pin 30 extends in the vertical direction and can be plugged into an external circuit board. The third electronic pin 50 is bent from the side wall of the first electronic pin 30 in the front-back direction, which improves the connection strength between the third electronic pin 50 and the first electronic pin 30 and ensures the connection stability between the third electronic pin 50 and the first electronic pin 30.

[0046] Please refer to the attached document. Figures 1-3 In this embodiment, the second electronic pin 40 extends in the vertical direction and can be plugged into an external circuit board; the third electronic pin 50, the second electronic pin 40 and the first electronic pin 30 are all formed by stamping cold-rolled steel to improve the resistance to vibration.

[0047] In the second application embodiment, an automotive electric fan includes a speed-regulating resistor 100, which is part of the automotive electric fan. The automotive electric fan will start working to remove hot air and help the engine maintain a proper temperature.

[0048] Compared with the prior art, the beneficial effects of this utility model are:

[0049] This utility model provides a speed-regulating resistor 100 and an automotive electric fan. The resistor body 10 includes a ceramic tube frame 11 and a resistance wire. The resistance wire is connected to the ceramic tube frame 11. The ceramic tube frame 11 has a heat dissipation hole 11a, which extends along the length of the ceramic tube frame 11 and penetrates through it. The heat dissipation hole 11a allows gas to pass through, enabling airflow-type heat dissipation for the ceramic tube frame 11 and the resistance wire. An insulating outer sheath 20 is fitted around the outer periphery of the ceramic tube frame 11 and covers the resistance wire to provide external insulation. A first electronic pin 30 is disposed on the ceramic tube frame 11. The first electronic pin 30 is located on the left side of the ceramic tube frame 11 and is electrically connected to the left end of the resistance wire; the second electronic pin 40 is located on the right side of the ceramic tube frame 11 and is electrically connected to the right end of the resistance wire; the third electronic pin 50 is connected to the first electronic pin 30 and is bent along the horizontal direction. The third electronic pin 50 is used to electrically connect to external components. The heat dissipation effect is achieved based on the heat dissipation through hole 11a. The ceramic tube frame 11 can also conduct heat, thereby quickly conducting the heat energy generated by the resistance wire. At the same time, the insulating outer sheath 20 not only provides insulation but also accelerates the heat dissipation capacity of the resistor body 10, improving the heat dissipation effect of the speed-regulating resistor 100 and greatly extending the service life of the speed-regulating resistor 100.

[0050] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0051] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0052] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A speed regulating resistor, characterized in that, The speed-regulating resistor, used in automotive electric fans, includes: The resistor body includes a ceramic tube frame and a resistance wire; the resistance wire is connected to the ceramic tube frame; the ceramic tube frame is provided with a heat dissipation hole, which extends along the length of the ceramic tube frame and penetrates the ceramic tube frame; the heat dissipation hole is used for gas to pass through, and the gas can dissipate heat from the ceramic tube frame and the resistance wire in an airflow manner. An insulating outer sheath is fitted around the outer periphery of the ceramic tube frame and covers the resistance wire to provide external insulation for the resistance wire. The first electronic pin is located on the left side of the ceramic tube frame and is electrically connected to the left end of the resistance wire; The second electronic pin is located on the right side of the ceramic tube frame and is electrically connected to the right end of the resistance wire; A third electronic pin is connected to the first electronic pin and bent horizontally; the third electronic pin is used for electrical connection to external components.

2. The speed regulating resistor of claim 1, wherein The ceramic tube frame includes a base portion and an arc portion, the arc portion being connected to the base portion and forming the heat dissipation through hole together with the base portion; The base portion is arranged in a flat plate shape, and the arc portion extends in an arc shape from the front end to the rear end of the base portion.

3. A speed regulating resistor according to claim 2, characterised in that The resistance wire is sleeved on the ceramic tube frame and extends spirally along the length of the ceramic tube frame.

4. A speed regulating resistor according to claim 3, characterised in that The resistance wire exchanges heat with the base portion and the arc portion respectively, and the heat conducted through the base portion and the arc portion is carried away by gas in the heat dissipation holes.

5. The speed regulating resistor of claim 1, wherein, The insulating outer sheath is located on the side of the ceramic tube frame facing the resistance wire and is arranged around the ceramic tube frame. The insulating outer sheath is coated on the outer periphery of the ceramic tube frame and covers the resistance wire.

6. The speed-regulating resistor according to claim 5, characterized in that, The insulating outer sheath is formed of silicone resin paint.

7. The speed regulating resistor of claim 5, wherein, The connection end of the resistance wire extends outward along the end of the ceramic tube skeleton and is connected to the third electronic pin.

8. The speed regulating resistor of claim 1, wherein, The third electronic pin is integrally connected to the first electronic pin, the first electronic pin extends in the vertical direction and can be plugged into an external circuit board, and the third electronic pin is bent from the side wall of the first electronic pin in the front-back direction.

9. A speed regulating resistor according to claim 8, characterised in that, The second electronic pin extends vertically and can be plugged into an external circuit board; The third electronic pin, the second electronic pin, and the first electronic pin are all formed by stamping cold-rolled steel.

10. An electronic fan for a vehicle, characterized by comprising: Includes the speed regulating resistor as described in any one of claims 1 to 9.

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