Steering wheel rotation sensor

Abstract

The utility model discloses a steering wheel rotation sensor which comprises an upper shell and a lower shell detachably connected to the bottom of the upper shell, an assembly hole is formed in the joint of the upper shell and the lower shell, and a heat dissipation assembly is inserted into the assembly hole; the heat dissipation assembly comprises a copper-aluminum alloy base inserted into the assembling hole, a copper-aluminum alloy plate fixedly connected to the end face of the copper-aluminum alloy base, and a copper-aluminum alloy carrying table fixedly connected to the tail end of the copper-aluminum alloy plate. A heat dissipation assembly is inserted into an assembling hole of the lower shell, the copper-aluminum alloy carrying table extends to the surface of the sensor, heat conduction silicone grease is smeared at the connecting position, and during work, part of heat generated by the sensor is transmitted to the surface of the copper-aluminum alloy base through the copper-aluminum alloy carrying table and the copper-aluminum alloy plate. The heat dissipation groove and the groove of the copper-aluminum alloy seat increase the heat dissipation area, improve the heat dissipation performance, effectively prevent external dust from entering while performing auxiliary heat dissipation on the sensor, and improve the use effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of steering wheel rotation sensors, and in particular relates to a steering wheel rotation sensor. Background Art

[0002] The car steering wheel angle sensor is a device specially used to measure the rotation angle and direction of the steering wheel when the car is turning; this sensor is widely used in various systems, including adaptive front lighting system (AFS), electronic stability control system (ESP / ESC), electric power steering (EPS), automatic driving system (ADAS) and lane departure warning system (MPC).

[0003] After searching, patent announcement number CN216580318U discloses a car headlight rotation assembly based on a steering wheel angle sensor. The car headlight rotation assembly based on a steering wheel angle sensor includes a micro motor and a car headlight. The micro motor is connected to a worm, and a worm wheel is meshed and connected to the worm, and the worm wheel is connected to the car headlight. The micro motor drives the worm and meshes to drive the worm wheel to move, thereby changing the deflection of the car headlight, so that the headlights illuminate more comprehensively when the vehicle turns;

[0004] In the current existing technology, gears and a sensor body are installed between the upper shell and the lower shell of the steering wheel rotation sensor. When in use, the sensor generates heat. If heat dissipation holes are directly opened on the surface of the upper shell or the lower shell, dust is easily adhered to the sensor surface after long-term use, affecting the sensitivity and accuracy of the sensor. Therefore, it is necessary to design a steering wheel rotation sensor to solve the above problem. Utility Model Content

[0005] The purpose of the utility model is to provide a steering wheel rotation sensor to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a steering wheel rotation sensor, comprising an upper shell and a lower shell detachably connected to the bottom of the upper shell, an assembly hole is provided at the connection between the upper shell and the lower shell, and a heat dissipation component is plugged into the interior of the assembly hole;

[0007] The heat dissipation component comprises a copper-aluminum alloy seat inserted in the assembly hole, a copper-aluminum alloy plate fixedly connected to the end surface of the copper-aluminum alloy seat, and a copper-aluminum alloy carrier fixedly connected to the end of the copper-aluminum alloy plate.

[0008] Preferably, a heat dissipation groove is provided on the surface of the copper-aluminum alloy seat, and an arc-shaped corner guard is provided at the end surface of the copper-aluminum alloy seat.

[0009] Preferably, a groove is formed on the outer surface of the copper-aluminum alloy seat.

[0010] Preferably, a sealing ring is sleeved at the opening position of the assembly hole and is fixed by bonding, the copper-aluminum alloy seat passes through the sealing ring, and the copper-aluminum alloy seat and the sealing ring are fixedly connected.

[0011] Preferably, a reinforcement plate A is fixedly connected to the outer surface of the upper shell, and a protective rubber ring A is bonded to the outside of the reinforcement plate A.

[0012] Preferably, a reinforcement plate B is fixedly connected to the surface of the lower shell, and a protective rubber ring B is sleeved on the outer side of the reinforcement plate B.

[0013] Preferably, the outer wall of the protective rubber ring A extends to the end surface of the upper shell body, and the outer wall of the protective rubber ring B extends to the end surface of the lower shell body.

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

[0015] 1. A heat dissipation component is inserted into the assembly hole of the lower shell, the copper-aluminum alloy carrier extends to the surface of the sensor, and thermal grease is applied to the connection. When working, part of the heat generated by the sensor is transferred to the surface of the copper-aluminum alloy seat through the copper-aluminum alloy carrier and the copper-aluminum alloy plate. The heat dissipation slots and grooves of the copper-aluminum alloy seat increase the heat dissipation area and improve the heat dissipation performance. While assisting the heat dissipation of the sensor, it effectively prevents the entry of external dust and improves the use effect.

[0016] 2. A reinforcement plate A is fixedly connected to the outer surface of the upper shell, and a protective rubber ring A is bonded to the outside of the reinforcement plate A. The reinforcement plate A and the protective rubber ring A provide protection for the upper shell against accidental collision and wear. A reinforcement plate B is fixedly connected to the surface of the lower shell, and a protective rubber ring B is sleeved on the outer side of the reinforcement plate B. The reinforcement plate B and the protective rubber ring B reinforce the lower shell and provide protection against wear. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 This is a schematic structural diagram of the upper shell and the lower shell of the utility model from another perspective;

[0019] Figure 3 This is a schematic diagram of the heat dissipation component structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the connection structure between the upper shell and the lower shell of the utility model.

[0021] In the figure: 1. upper shell; 2. reinforcement plate A; 3. protective rubber ring A; 4. lower shell; 5. sealing ring; 6. copper-aluminum alloy seat; 7. heat dissipation groove; 8. arc-shaped corner guard; 9. groove; 10. copper-aluminum alloy plate; 11. copper-aluminum alloy carrier; 12. assembly hole; 13. reinforcement plate B; 14. protective rubber ring B. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1: Please refer to Figures 1 to 4 The utility model provides a technical solution of a steering wheel rotation sensor: comprising an upper shell 1 and a lower shell 4 detachably connected to the bottom of the upper shell 1, an assembly hole 12 is provided at the connection between the upper shell 1 and the lower shell 4, and a heat dissipation component is inserted into the assembly hole 12;

[0024] The heat dissipation assembly includes a copper-aluminum alloy seat 6 inserted into the assembly hole 12, a copper-aluminum alloy plate 10 fixedly connected to the end surface of the copper-aluminum alloy seat 6, and a copper-aluminum alloy carrier 11 fixedly connected to the end of the copper-aluminum alloy plate 10.

[0025] A heat dissipation groove 7 is provided on the surface of the copper-aluminum alloy seat 6, an arc-shaped corner guard 8 is provided at the end surface of the copper-aluminum alloy seat 6, a groove 9 is provided on the outer surface of the copper-aluminum alloy seat 6, a sealing ring 5 is sleeved at the opening position of the assembly hole 12 and is fixed by bonding, the copper-aluminum alloy seat 6 passes through the sealing ring 5, and the copper-aluminum alloy seat 6 and the sealing ring 5 are fixedly connected.

[0026] From the above description, it can be seen that the utility model has the following beneficial effects: a heat dissipation component is plugged into the assembly hole 12 of the lower shell 4, the copper-aluminum alloy carrier 11 extends to the surface of the sensor, and thermal conductive silicone grease is applied to the connection. When working, part of the heat generated by the sensor is transferred to the surface of the copper-aluminum alloy seat 6 through the copper-aluminum alloy carrier 11 and the copper-aluminum alloy plate 10, and the heat dissipation slots 7 and grooves 9 of the copper-aluminum alloy seat 6 increase the heat dissipation area, improve the heat dissipation performance, and while assisting the heat dissipation of the sensor, effectively prevent the entry of external dust, thereby improving the use effect.

[0027] Example 2: Please refer to Figures 1 to 4As shown, on the basis of embodiment 1, the utility model provides a technical solution for a steering wheel rotation sensor: a reinforcement plate A2 is fixedly connected to the outer surface of the upper shell 1, a protective rubber ring A3 is bonded to the outside of the reinforcement plate A2, a reinforcement plate B13 is fixedly connected to the surface of the lower shell 4, a protective rubber ring B14 is sleeved on the outer side of the reinforcement plate B13, an outer wall of the protective rubber ring A3 extends to the end face position of the upper shell 1, and an outer wall of the protective rubber ring B14 extends to the end face position of the lower shell 4.

[0028] By adopting the above technical scheme, a reinforcement plate A2 is fixedly connected to the outer surface of the upper shell 1, and a protective rubber ring A3 is bonded to the outside of the reinforcement plate A2. The reinforcement plate A2 and the protective rubber ring A3 provide protection for the upper shell 1 against accidental collision and wear. A reinforcement plate B13 is fixedly connected to the surface of the lower shell 4, and a protective rubber ring B14 is sleeved on the outer side of the reinforcement plate B13. The reinforcement plate B13 and the protective rubber ring B14 reinforce the lower shell 4 and provide protection against wear.

[0029] The working principle and use process of the utility model are as follows: a heat dissipation component is inserted into the assembly hole 12 of the lower shell 4, the copper-aluminum alloy carrier 11 extends to the surface of the sensor, and thermal grease is applied to the connection. When working, part of the heat generated by the sensor is transferred to the surface of the copper-aluminum alloy seat 6 through the copper-aluminum alloy carrier 11 and the copper-aluminum alloy plate 10. The heat dissipation groove 7 and the groove 9 of the copper-aluminum alloy seat 6 increase the heat dissipation area, improve the heat dissipation performance, and assist the heat dissipation of the sensor while effectively preventing the entry of external dust, thereby improving the use effect; a reinforcement plate A2 is fixedly connected to the outer surface of the upper shell 1, and a protective rubber ring A3 is bonded to the outside of the reinforcement plate A2. The reinforcement plate A2 and the protective rubber ring A3 provide anti-accidental collision and anti-wear protection for the upper shell 1; a reinforcement plate B13 is fixedly connected to the surface of the lower shell 4, and a protective rubber ring B14 is sleeved on the outer side of the reinforcement plate B13. The reinforcement plate B13 and the protective rubber ring B14 reinforce and protect the lower shell 4 from wear.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0031] The above description is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A steering wheel rotation sensor, comprising an upper housing (1) and a lower housing (4) detachably connected to the bottom of the upper housing (1), characterized in that: An assembly hole (12) is provided at the connection between the upper shell (1) and the lower shell (4), and a heat dissipation component is plugged into the interior of the assembly hole (12); The heat dissipation component comprises a copper-aluminum alloy seat (6) inserted into the assembly hole (12), a copper-aluminum alloy plate (10) fixedly connected to the end surface of the copper-aluminum alloy seat (6), and a copper-aluminum alloy carrier (11) fixedly connected to the end of the copper-aluminum alloy plate (10).

2. A steering wheel rotation sensor according to claim 1, characterized in that: A heat dissipation groove (7) is provided on the surface of the copper-aluminum alloy seat (6), and an arc-shaped corner guard (8) is provided at the end surface of the copper-aluminum alloy seat (6).

3. A steering wheel rotation sensor according to claim 2, characterized in that: The outer surface of the copper-aluminum alloy seat (6) is provided with a groove (9).

4. A steering wheel rotation sensor according to claim 1, characterized in that: A sealing ring (5) is sleeved at the opening of the assembly hole (12) and is fixed by bonding. The copper-aluminum alloy seat (6) penetrates the sealing ring (5). The copper-aluminum alloy seat (6) and the sealing ring (5) are fixedly connected.

5. The steering wheel rotation sensor according to claim 1, characterized in that: The outer surface of the upper shell (1) is fixedly connected to a reinforcing plate A (2), the outer side of the reinforcing plate A (2) is bonded with a protective rubber ring A (3), and the surface of the lower shell (4) is fixedly connected to a reinforcing plate B (13), the outer side of the reinforcing plate B (13) is sleeved with a protective rubber ring B (14).

6. A steering wheel rotation sensor according to claim 5, characterized in that: The outer wall of the protective rubber ring A (3) extends to the end surface of the upper shell (1), and the outer wall of the protective rubber ring B (14) extends to the end surface of the lower shell (4).

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