Wiper motor housing mechanism

Abstract

The utility model relates to motor casing technical field, concretely is the shell mechanism of wiper motor, including wiper motor assembly, wiper motor assembly includes motor casing, be provided with heat dissipation subassembly on the motor casing, heat dissipation subassembly includes the fin, heat conduction ring and be used for connecting the heat conduction block of fin and heat conduction ring, heat conduction block penetrates motor casing, heat conduction block and the sealing rubber cover that sets up on the contact position of motor casing, through the polygonal groove design of elastic connecting ring has increased the deformation variable significantly, cooperates the dynamic misregistration of support ring and contact ring, makes vibration energy in transmission process can be dispersed efficiently, cooperates the connecting piece of elastic heat conduction material and the flow guide piece, forms multistage buffer energy absorption, has simplified internal structure, has reduced the overall weight, improved the shock attenuation efficiency simultaneously, reduced the component damage risk that wiper motor and the body resonance led to, improved the stability of device.

Description

Technical Field

[0001] This utility model relates to the field of motor housing technology, specifically to the housing mechanism of a wiper motor. Background Technology

[0002] As a core component of automotive safety systems, the technological development of the wiper motor's housing structure closely follows the automotive industry's evolving demands for reliability, durability, and environmental adaptability. When the wiper motor is running, its high speed can easily cause resonance with other components of the vehicle, potentially damaging the vehicle's components or the wiper motor itself.

[0003] To address the issue of high-speed wiper motors causing resonance during vehicle operation, Chinese Patent Publication No. CN218162054U discloses an ultralight high-speed wiper motor housing. This housing includes a bottom shell with a top shell threaded onto its top. A support mechanism is installed in the middle of the bottom wall of the bottom shell. A support ring is horizontally installed at the bottom of the bottom cavity of the bottom shell. Fixing rods are installed on the top of the left and right inner walls of the bottom shell, and a fixing ring is installed on the opposite side of each fixing rod. This prior art utilizes the rotor shaft, which is inserted into the fixing ring and then into the movable slip ring, to maintain rotor stability during rotation. A buffer block and movable baffle transmit the vibration generated during rotor rotation to the damping frame. Furthermore, the damping block and damping spring absorb and dissipate the vibration energy, significantly reducing the vibration generated by the wiper motor during high-speed operation and preventing resonance between the motor and vehicle parts.

[0004] In the above scheme, the vibration generated during rotor rotation can be transmitted to the inside of the vibration damping frame through the buffer block and movable baffle. Furthermore, the vibration energy can be absorbed and dissipated through the action of the damping block and damping spring. This vibration damping method...

[0005] The increased internal structure of the wiper motor assembly makes the wiper motor itself heavier and more complex, which can easily lead to resonance. To address this, we propose a housing mechanism for the wiper motor. Utility Model Content

[0006] To solve the above-mentioned technical problems, embodiments of this application provide a housing mechanism for a wiper motor, including a wiper motor assembly. The wiper motor assembly includes a motor housing, and a heat dissipation component is disposed on the motor housing. The heat dissipation component includes a heat sink, a heat conducting ring, and a heat conducting block for connecting the heat sink and the heat conducting ring. The heat conducting block penetrates through the motor housing, and a sealing sleeve is disposed at the contact position between the heat conducting block and the motor housing.

[0007] In some embodiments, the heat-conducting ring is arranged in a circular shape inside the motor housing.

[0008] In some embodiments, the heat-conducting ring includes a support ring, contact rings symmetrically arranged on both sides of the support ring, and an elastic connecting ring for connecting the support ring and the support ring. The elastic connecting ring has a plurality of polygonal grooves, which are distributed circumferentially and at equal intervals on the elastic connecting ring.

[0009] In some embodiments, the outer surface of the contact ring is connected to the inner wall of the motor housing, the diameter of the support ring is smaller than that of the contact ring, and the heat-conducting block is connected to the support ring.

[0010] In some embodiments, the heat sink includes symmetrically arranged guide vanes, a snap-fit ​​block for connecting to an external mounting bracket of the wiper motor assembly, and a connecting piece for connecting the guide vanes and the snap-fit ​​block, the connecting piece being connected to the heat-conducting block.

[0011] In some embodiments, the guide vane is provided with an air inlet and an air outlet, the guide vane is a hollow semi-cylindrical shape, and the diameter of the air inlet is larger than the diameter of the air outlet.

[0012] In some embodiments, the snap-fit ​​block is disposed at the bottom of the wiper motor assembly, the snap-fit ​​block is interference-fitted with the external mounting bracket of the wiper motor assembly, and the bottom of the deflector plate contacts the top of the external mounting bracket of the wiper motor assembly.

[0013] In some embodiments, the snap-fit ​​block includes a snap-fit ​​elastic plate and an EPDM rubber pad, wherein the EPDM rubber pad is mounted on the contact surface between the snap-fit ​​elastic plate and the external mounting base of the wiper motor assembly.

[0014] This utility model has at least the following beneficial effects:

[0015] 1. This utility model achieves multi-level absorption and dissipation of vibration by setting up an elastic connecting ring, connecting piece, guide piece, sealing sleeve, and EPDM rubber pad on the snap-fit ​​block. The polygonal groove design on the elastic connecting ring significantly increases the deformation. Combined with the dynamic misalignment of the support ring and the contact ring, the vibration energy can be efficiently dispersed during transmission. The elastic deformation of the sealing sleeve further blocks the transmission of vibration. Combined with the connecting piece and guide piece made of elastic heat-conducting material, a multi-level buffer energy absorption is formed. This simplifies the internal structure, reduces the overall weight, improves the shock absorption efficiency, reduces the risk of component damage caused by the resonance between the wiper motor and the vehicle body, and improves the stability of the device.

[0016] 2. This utility model is equipped with a heat dissipation component, and heat is transferred through a heat-conducting ring, heat-conducting block and guide plate. The hollow semi-cylindrical guide plate adopts a tapered air inlet and outlet structure, which improves heat dissipation efficiency. The polygonal groove of the elastic connecting ring disturbs the internal airflow during deformation, promotes the uniform distribution of heat in the motor cavity and avoids local overheating. The guide plate uses the principle of fluid mechanics to form a negative pressure flow effect through the flow velocity difference between the air inlet and outlet, which accelerates the external cold air to pass through the hollow structure to convect and cool the motor housing, thus improving the practicality of the device. Attached Figure Description

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

[0018] Figure 2 This is a schematic diagram of the heat sink structure of this utility model;

[0019] Figure 3 This is a schematic diagram showing the position of the ethylene propylene rubber in this utility model;

[0020] Figure 4 This is a schematic diagram of the connection of the heat dissipation component of this utility model;

[0021] Figure 5 This is a schematic diagram of the heat-conducting ring structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the installation of the support ring of this utility model.

[0023] In the diagram: 1. Wiper motor assembly; 2. Motor housing; 3. Heat dissipation component; 31. Heat sink; 311. Air guide plate; 3111. Air inlet; 3112. Air outlet; 312. Connecting piece; 313. Snap-fit ​​block; 3131. Snap-fit ​​elastic plate; 3132. EPDM rubber pad; 32. Heat-conducting block; 33. Heat-conducting ring; 331. Contact ring; 332. Elastic connecting ring; 333. Polygonal groove; 334. Support ring; 34. Sealing sleeve. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1:

[0026] Please see Figure 1-5The present invention provides a technical solution: a wiper motor housing mechanism, including a wiper motor assembly 1, the wiper motor assembly 1 including a motor housing 2, a heat dissipation component 3 provided on the motor housing 2, the heat dissipation component 3 including a heat sink 31, a heat conducting ring 33 and a heat conducting block 32 for connecting the heat sink 31 and the heat conducting ring 33, the heat conducting block 32 penetrating the motor housing 2, and a sealing sleeve 34 provided at the contact position between the heat conducting block 32 and the motor housing 2;

[0027] The motor housing 2 serves as the basic structure of the outer shell mechanism, supporting and protecting the internal components, while also providing a mounting base for the heat dissipation components 3. Its inner wall is connected to the contact ring 331 of the heat conduction ring 33 to ensure effective conduction of vibration and heat.

[0028] The heat-conducting ring 33 is arranged in a circular shape inside the motor housing 2;

[0029] The heat-conducting ring 33 includes a support ring 334, contact rings 331 symmetrically arranged on both sides of the support ring 334, and an elastic connecting ring 332 for connecting the support ring 334 and the support ring 334. The elastic connecting ring 332 has a plurality of polygonal grooves 333, which are distributed in a circumferentially spaced manner on the elastic connecting ring 332.

[0030] The heat-conducting ring 33 conducts heat from inside the motor to the heat sink 31, and absorbs vibration energy through deformation. The contact ring 331 is connected to the inner wall of the motor housing 2 to conduct vibration and heat. The elastic connecting ring 332 has a polygonal groove 333 to increase the deformation, allowing the support ring 334 and the contact ring 331 to dynamically misalign, thereby absorbing vibration energy. The support ring 334 is connected to the heat-conducting block 32 to conduct heat and vibration to the heat sink 31. Vibration is transmitted to the elastic connecting ring 332 through the contact ring 331. The polygonal groove 333 design allows the elastic connecting ring 332 to generate greater deformation, dispersing vibration energy. At the same time, heat is conducted to the heat sink 31 through the support ring 334 and the heat-conducting block 32.

[0031] The outer surface of the contact ring 331 is connected to the inner wall of the motor housing 2, the diameter of the support ring 334 is smaller than that of the contact ring 331, and the heat-conducting block 32 is connected to the support ring 334.

[0032] The heat sink 31 includes symmetrically arranged guide vanes 311, a snap-fit ​​block 313 for connecting the external mounting base of the wiper motor assembly 1, and a connecting piece 312 for connecting the guide vanes 311 and the snap-fit ​​block 313. The connecting piece 312 is connected to the heat-conducting block 32.

[0033] The guide vane 311 is provided with an air inlet 3111 and an air outlet 3112. The guide vane 311 is a hollow semi-cylindrical shape, and the diameter of the air inlet 3111 is larger than the diameter of the air outlet 3112.

[0034] The heat sink 31 serves as the final heat dissipation component and also participates in the absorption of vibration energy. The air guide plate 311 features a hollow semi-cylindrical design that utilizes fluid dynamics principles to accelerate heat dissipation. The diameter of the air inlet 3111 is larger than that of the air outlet 3112, creating a negative pressure flow effect that guides external cold air through the hollow structure to convectively cool the motor housing 2. The connecting piece 312 is made of elastic thermally conductive material and connects the air guide plate 311 and the snap-fit ​​block 313, while simultaneously conducting heat and absorbing vibration. The snap-fit ​​block 313 is connected to the external mounting base through an interference fit to ensure stable installation of the heat sink 31. The air guide plate 311 utilizes a tapered air inlet / outlet design 3112 to accelerate airflow. The connecting piece 312 disperses the heat conducted by the heat conduction ring 33 to the air guide plate 311 and absorbs some vibration energy through elastic deformation.

[0035] The heat-conducting block 32 connects the heat sink 31 and the heat-conducting ring 33, conducts heat and vibration energy, penetrates the motor housing 2, one end is connected to the support ring 334 of the heat-conducting ring 33, and the other end is connected to the connecting piece 312 of the heat sink 31. While conducting heat, it allows some vibration energy to be absorbed through the deformation of the sealing sleeve 34.

[0036] The snap-fit ​​block 313 achieves a stable connection between the heat sink 31 and the external mounting base, while providing buffering and heat insulation. The snap-fit ​​elastic plate 3131 provides the elastic force required for the interference fit. The EPDM rubber pad 3132 is installed on the contact surface between the snap-fit ​​elastic plate 3131 and the external mounting base to achieve heat insulation and elastic energy absorption. The interference fit ensures the stable installation of the heat sink 31. The EPDM rubber pad 3132 reduces the transfer of heat to the external mounting base and absorbs some vibration energy through elastic deformation.

[0037] Vibration is transmitted through the motor housing 2 to the contact ring 331, and then through the elastic connecting ring 332 to the support ring 334. Part of the vibration energy is absorbed by the deformation of the sealing sleeve 34, and the remaining energy is transferred to the connecting piece 312 through the heat-conducting block 32. The connecting piece 312 and the guide piece 311 further absorb the vibration energy through elastic deformation. The snap-fit ​​block 313 reduces the transmission of vibration to the external mounting base through the EPDM rubber pad 3132.

[0038] Heat is conducted through the heat-conducting ring 33 to the heat-conducting block 32, and then to the connecting piece 312. The connecting piece 312 disperses the heat to the guide plate 311, which uses airflow to accelerate heat dissipation. The polygonal groove 333 of the elastic connecting ring 332 disturbs the internal airflow during deformation, promoting uniform heat distribution and avoiding local overheating. Through the synergistic effect of the above components, the wiper motor housing mechanism achieves efficient heat dissipation while significantly improving shock absorption efficiency, avoiding damage to the motor and automotive components caused by resonance, and improving the stability and practicality of the device.

[0039] Example 2:

[0040] Please see Figure 1-6 The present invention provides a technical solution: a housing mechanism for a wiper motor, wherein a snap-fit ​​block 313 is disposed at the bottom of the wiper motor assembly 1, the snap-fit ​​block 313 is interference-fitted with the external mounting base of the wiper motor assembly 1, and the bottom of the guide vane 311 contacts the top of the external mounting base of the wiper motor assembly 1.

[0041] The snap-fit ​​block 313 includes a snap-fit ​​elastic plate 3131 and an ethylene propylene rubber pad 3132. The ethylene propylene rubber pad 3132 is installed on the contact surface between the snap-fit ​​elastic plate 3131 and the external mounting base of the wiper motor assembly 1.

[0042] The sealing sleeve 34 provides a seal between the heat-conducting block 32 and the motor housing 2 to prevent external substances from entering. At the same time, it assists in shock absorption by absorbing part of the vibration energy transmitted by the heat-conducting block 32 through elastic deformation, thereby reducing the transmission of vibration to the motor housing 2.

[0043] When the wiper motor assembly 1 is running, the wiper motor rotates and generates vibration. Since the inner wall of the motor housing 2 is connected to the contact ring 331, the vibration is transmitted to the support ring 334 through the elastic connecting ring 332. The support ring 334 then transmits the vibration through the heat-conducting block 32. The heat-conducting block 32 penetrates the motor housing 2 and is provided with a sealing sleeve 34 between it and the motor housing 2. Part of the vibration is absorbed and canceled by the deformation of the sealing sleeve 34, while the other part is transmitted to the connecting piece 312 through the heat-conducting block 32. The connecting piece 312 then transmits the vibration to the guide piece 311 and the snap-fit ​​block 313. Since the connecting piece 312 and the guide piece 311 are made of elastic and thermally conductive material, they can perform partial energy absorption and buffering and vibration reduction.

[0044] The snap-fit ​​block 313 and the external mounting base of the wiper motor assembly 1 are interference-fitted. The bottom of the guide vane 311 is tightly fitted to the external mounting base of the wiper motor assembly 1. Thus, both the guide vane 311 and the snap-fit ​​block 313 are interference-fitted to the external mounting base of the wiper motor assembly 1. Most of the vibration will be transmitted to the support block through the connecting piece 312, causing the support block and the contact ring 331 to be misaligned. The elastic connecting ring 332 deforms. Through the deformation of the connecting piece 312, the guide vane 311 is driven to slide along the upper surface of the external mounting block of the wiper motor assembly 1. The friction generates heat, which weakens and consumes the vibration energy. Through the joint vibration reduction and energy absorption of the elastic connecting ring 332, the sealing sleeve 34, the elastic material connecting piece 312 and the guide vane 311, the vibration reduction effect of the wiper motor is achieved with a simple and lightweight structure, avoiding the problem of increased resonance probability caused by more mechanisms.

[0045] The elastic connecting ring 332 has several polygonal grooves 333 evenly distributed around its circumference, which makes the elastic connecting ring 332 more deformable. Moreover, during deformation, the amount of gas in the dynamic space formed by the contact ring 331, the support ring 334 and the elastic connecting ring 332 can increase or decrease, thereby disturbing the airflow in the wiper motor and making the heat in the wiper motor evenly distributed, which facilitates the absorption and transfer of heat by the support block.

[0046] The support block transfers the absorbed heat to the connecting piece 312 through the heat-conducting block 32. The connecting piece 312 then transfers the heat to the guide plate 311 and the snap-fit ​​block 313. The snap-fit ​​block 313 has an ethylene propylene rubber pad 3132 on its contact surface with the external mounting base of the wiper motor assembly 1, achieving heat insulation and elastic energy absorption. The heat is mainly dissipated by the guide plate 311. The diameter of the air inlet 3111 on the guide plate 311 is larger than the diameter of the air outlet 3112. Utilizing the principle of high flow rate and low air pressure, the guide plate 311 can continuously guide the external airflow through the guide plate 311. Furthermore, the guide plate 311 is designed as a hollow semi-cylindrical shape with no obstruction on the side near the motor housing 2. The airflow guided by the guide plate 311 can also cool and dissipate heat on the outer surface of the motor housing 2, thus improving the heat dissipation efficiency of the wiper motor while also providing vibration reduction.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A housing mechanism of a wiper motor, comprising a wiper motor assembly (1), characterized in that: The wiper motor assembly (1) includes a motor housing (2), on which a heat dissipation component (3) is provided. The heat dissipation component (3) includes a heat sink (31), a heat conduction ring (33), and a heat conduction block (32) for connecting the heat sink (31) and the heat conduction ring (33). The heat conduction block (32) penetrates through the motor housing (2), and a sealing sleeve (34) is provided at the contact position between the heat conduction block (32) and the motor housing (2).

2. The housing mechanism of a rain sensor motor according to claim 1, characterized by: The heat-conducting ring (33) is arranged in a circular shape inside the motor housing (2).

3. The wiper motor housing mechanism of claim 2, wherein: The heat-conducting ring (33) includes a support ring (334), contact rings (331) symmetrically arranged on both sides of the support ring (334), and an elastic connecting ring (332) for connecting the support ring (334) and the support ring (334). The elastic connecting ring (332) has a plurality of polygonal grooves (333) and the plurality of polygonal grooves (333) are distributed in a circumferentially evenly spaced manner on the elastic connecting ring (332).

4. The wiper motor housing mechanism of claim 3, wherein: The outer surface of the contact ring (331) is connected to the inner wall of the motor housing (2), the diameter of the support ring (334) is smaller than that of the contact ring (331), and the heat-conducting block (32) is connected to the support ring (334).

5. The housing mechanism for a rain sensor motor of claim 1 wherein: The heat sink (31) includes symmetrically arranged guide plates (311), a snap-fit ​​block (313) for connecting the external mounting base of the wiper motor assembly (1), and a connecting piece (312) for connecting the guide plates (311) and the snap-fit ​​block (313), wherein the connecting piece (312) is connected to the heat-conducting block (32).

6. The wiper motor housing mechanism of claim 5, wherein: The guide vane (311) is provided with an air inlet (3111) and an air outlet (3112). The guide vane (311) is a hollow semi-cylindrical shape, and the diameter of the air inlet (3111) is larger than the diameter of the air outlet (3112).

7. The housing mechanism of a rain-sensor motor according to claim 6, characterized by: The snap-fit ​​block (313) is located at the bottom of the wiper motor assembly (1). The snap-fit ​​block (313) is interference-fitted with the external mounting base of the wiper motor assembly (1). The bottom of the guide vane (311) is in contact with the top of the external mounting base of the wiper motor assembly (1).

8. The housing mechanism of a rain sensor motor according to claim 7, wherein: The snap-fit ​​block (313) includes a snap-fit ​​elastic plate (3131) and an ethylene propylene rubber pad (3132), wherein the ethylene propylene rubber pad (3132) is installed on the contact surface between the snap-fit ​​elastic plate (3131) and the external mounting base of the wiper motor assembly (1).

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