Double-eccentric vibration motor structure of steering wheel of motor vehicle

Abstract

The double-eccentric vibration motor structure comprises a steering wheel body, the steering wheel body comprises an annular holding part and a connecting part, the connecting part is located on the inner side of the annular holding part, and the left end and the right end of the connecting part are connected with the annular holding part respectively; the vibration assembly comprises a vibration motor and two eccentric blocks, the vibration motor is installed on the connecting part and provided with rotating shafts distributed left and right, the two ends of each rotating shaft extend out of the vibration motor and are connected with the eccentric blocks respectively, and the two eccentric blocks are arranged in a bilateral symmetry mode relative to the rotating shafts and located on the left side and the right side of the connecting part respectively. The double-eccentric vibration motor structure of the steering wheel of the motor vehicle is good in use experience and long in service life.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a dual eccentric vibration motor structure for a motor vehicle steering wheel. Background Technology

[0002] Vehicles equipped with intelligent driving functions typically include a vibration alert feature on the steering wheel. Under specific conditions, the steering wheel vibrates to prompt the driver to take over steering. Currently, this vibration alert function is generally achieved by embedding a vibration motor within the steering wheel. In existing structural designs, the vibration motors used for this alert function are mostly single-eccentric motors, meaning an eccentric block is installed at one end of the motor's shaft, and vibration is generated by the eccentric rotation of the eccentric block. However, this single-sided eccentric rotation method has several drawbacks: firstly, the difference in vibration perceived by the driver's two hands is significant, affecting the driving experience; secondly, due to the unilateral force, the radial impact on the motor's bearings and housing is large, easily damaging the bearings or causing loosening relative to the steering wheel, resulting in a short service life. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a dual-eccentric vibration motor structure for a motor vehicle steering wheel, which offers a good user experience and a long lifespan.

[0004] The dual eccentric vibration motor structure for a motor vehicle steering wheel according to an embodiment of the present invention includes:

[0005] A steering wheel body, the steering wheel body including an annular grip portion and a connecting portion, the connecting portion being located inside the annular grip portion and having its left and right ends respectively connected to the annular grip portion;

[0006] The vibration assembly includes a vibration motor and two eccentric blocks. The vibration motor is mounted on the connecting part and has rotating shafts distributed on the left and right. The two ends of the rotating shafts extend out of the vibration motor and are respectively connected to the eccentric blocks. The two eccentric blocks are arranged symmetrically with respect to the rotating shafts and are located on the left and right sides of the connecting part.

[0007] The dual-eccentric vibration motor structure for a motor vehicle steering wheel according to an embodiment of the present invention has at least the following beneficial effects:

[0008] By symmetrically arranging eccentric blocks at both ends of the vibration motor's shaft, the vibration motor achieves eccentric rotation on both sides. The centrifugal forces generated by the eccentric blocks at both ends are balanced, resulting in a more concentrated vibration direction. This reduces lateral sway, making the motor run more smoothly, and relatively reducing heat generation and wear. Furthermore, the symmetrical structural design can counteract internal stress, making the bearings and mechanical components of the vibration motor more evenly stressed and more stable, thereby extending their service life. Secondly, by placing the two eccentric blocks on the left and right sides of the connecting part respectively, the vibration can be transmitted more evenly to the left and right sides of the annular grip during vibration, allowing the driver's hands to feel almost the same vibration, thus improving the driver's user experience.

[0009] According to some embodiments of the present invention, the vibration assembly further includes:

[0010] A first mounting part is mounted on the connecting part;

[0011] The second mounting part is connected to the first mounting part;

[0012] The vibration motor is located between the first mounting part and the second mounting part, and is clamped and fixed by the first mounting part and the second mounting part.

[0013] According to some embodiments of the present invention, the first mounting part defines a positioning cavity, the end of the positioning cavity away from the connecting part is an open end, the vibration motor is partially embedded in the positioning cavity and fits against the inner wall of the positioning cavity, and the second mounting part is connected to the open end of the first mounting part and abuts against the side of the vibration motor away from the first mounting part.

[0014] According to some embodiments of the present invention, the second mounting portion defines a recess on the side facing the first mounting portion, and the vibration motor portion is embedded in the recess and fits against the inner wall of the recess.

[0015] According to some embodiments of the present invention, the first mounting part is provided with first threaded holes on opposite sides of the vibration motor, and the second mounting part is provided with a first through hole corresponding to the first threaded hole. The first through hole is aligned with the first threaded hole and a first screw is inserted through it to connect the first mounting part and the second mounting part.

[0016] According to some embodiments of the present invention, the connecting portion defines a mounting cavity, and both the first mounting portion and the second mounting portion are located within the mounting cavity.

[0017] According to some embodiments of the present invention, at least two mounting posts are provided in the mounting cavity, each of the mounting posts is provided with a second threaded hole, the first mounting part is provided with a second through hole corresponding to the second threaded hole, the second through hole is aligned with the second threaded hole and a second screw is passed through it to connect the first mounting part and the connecting part.

[0018] According to some embodiments of the present invention, the end of the mounting post away from the connecting part is provided with a mating plane, the second threaded hole is provided on the mating plane, and the first mounting part is fitted to the mating plane.

[0019] According to some embodiments of the present invention, the left and right ends of the rotating shaft are respectively provided with mating sections, the cross-sectional shape of the mating sections is circular, the eccentric block is provided with an eccentric hole adapted to the mating section, the eccentric block is sleeved on the mating section through the eccentric hole and is interference-fitted with the mating section.

[0020] According to some embodiments of the present invention, the vibration motor is configured as a brushed DC motor.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is a schematic diagram of the installation structure of an embodiment of this utility model;

[0024] Figure 2 This is an exploded view of the installation structure according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the vibration assembly according to an embodiment of the present invention;

[0026] Figure 4 This is an exploded view of the structure of the vibration component according to an embodiment of the present invention.

[0027] Icon labels:

[0028] Steering wheel body 100, annular grip portion 110, connecting portion 120, mounting cavity 121, mounting post 122, second threaded hole 123, mating plane 124;

[0029] Vibration assembly 200, vibration motor 210, rotating shaft 211, eccentric block 220, eccentric hole 221, first mounting part 230, positioning cavity 231, first threaded hole 232, second through hole 233, second mounting part 240, recess 241, first through hole 242, first screw 250, second screw 260. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] In existing structural designs, most vibration motors on the steering wheel that serve as vibration alerts are single-eccentric vibration motors. This means that an eccentric block is installed at one end of the motor's shaft, and vibration is generated by the eccentric rotation of the eccentric block. However, this single-sided eccentric rotation method still has many shortcomings: First, the difference in vibration perceived by the driver's two hands is large, affecting the driving experience; second, due to the force on one side, the radial impact on the bearings and housing of the vibration motor is large, which can easily damage the bearings or cause the entire motor to loosen relative to the steering wheel, resulting in a short service life.

[0035] Therefore, this utility model proposes a dual eccentric vibration motor structure for a motor vehicle steering wheel, which can effectively improve the above-mentioned problems.

[0036] The structure of a dual-eccentric vibration motor for a motor vehicle steering wheel according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0037] Reference Figures 1 to 4 As shown, an embodiment of the present invention provides a dual eccentric vibration motor structure for a motor vehicle steering wheel, comprising a steering wheel body 100 and a vibration component 200.

[0038] The steering wheel body 100 includes an annular grip portion 110 and a connecting portion 120. The connecting portion 120 is located inside the annular grip portion 110. The left and right ends of the connecting portion 120 are respectively connected to the annular grip portion 110. In addition, the connecting portion 120 is used to connect with the steering shaft of the motor vehicle. It should be noted that the left and right directions in this article are defined based on the state of the steering wheel when the motor vehicle is traveling in a straight line.

[0039] The vibration assembly 200 includes a vibration motor 210 and two eccentric blocks 220. The vibration motor 210 is mounted on the connecting part 120 and has a rotating shaft 211 distributed to the left and right. Both ends of the rotating shaft 211 extend out of the housing of the vibration motor 210 and are respectively connected to the eccentric blocks 220. That is, the two eccentric blocks 220 are respectively connected to the left and right ends of the rotating shaft 211, and obviously, the two eccentric blocks 220 rotate synchronously. Furthermore, the two eccentric blocks 220 are arranged symmetrically with respect to the rotating shaft 211, and the two eccentric blocks 220 are located on the left and right sides of the connecting part 120, respectively. In some specific embodiments, the cross-section of the eccentric blocks 220 is fan-shaped.

[0040] The dual-eccentric vibration motor structure of the motor vehicle steering wheel of this utility model achieves dual-sided eccentric rotation of the vibration motor 210 by symmetrically arranging eccentric blocks 220 at both ends of the rotating shaft 211 of the vibration motor 210. The centrifugal forces generated by the eccentric blocks 220 at both ends are balanced, the vibration direction is more concentrated, lateral sway is reduced, the motor runs more smoothly, heat generation and wear are relatively reduced, and the symmetrical structural design can offset internal stress, making the bearings and mechanical components of the vibration motor 210 more evenly stressed and more stable, thereby extending its service life. Secondly, by placing the two eccentric blocks 220 on the left and right sides of the connecting part 120 respectively, the vibration can be transmitted more evenly to the left and right sides of the annular grip part 110 during vibration, so that the driver's hands feel almost the same vibration, improving the driver's user experience. In addition, the design of dual eccentric blocks 220 has a greater excitation force and higher efficiency. By superimposing the excitation force of the eccentric blocks 220 at both ends, a greater vibration force can be provided at the same speed, which is suitable for scenarios that require strong vibration output and require the driver to quickly take over the vehicle.

[0041] Reference Figures 2 to 4As shown, in some embodiments of this utility model, the vibration assembly 200 further includes a first mounting portion 230 and a second mounting portion 240. The first mounting portion 230 is mounted on the connecting portion 120, and the second mounting portion 240 is connected to the first mounting portion 230. The vibration motor 210 is located between the first mounting portion 230 and the second mounting portion 240 and is clamped and fixed by the first mounting portion 230 and the second mounting portion 240. In this way, the vibration motor 210 is clamped and fixed by the first mounting portion 230 and the second mounting portion 240, thereby mounting the vibration motor 210 onto the connecting portion 120. The advantage is that there is no need to design a connecting structure on the vibration motor 210 to connect with the connecting portion 120; only a connecting structure needs to be designed on the first mounting portion 230 to connect with the connecting portion 120. The design and manufacturing costs are lower. It is conceivable that, due to the limited space of the steering wheel body 100 and the vibration motor... The shape and size of the steering wheel 210 usually have certain design specifications. Directly designing a connection structure between the vibration motor 210 and the connecting part 120 may require significant modifications to the original structure of the vibration motor 210 or the steering wheel body 100, resulting in high costs. However, by setting the first mounting part 230 and the second mounting part 240, it is only necessary to ensure that the two can clamp the vibration motor 210. The shapes of the first mounting part 230 and the second mounting part 240 can be designed arbitrarily without specific design specifications, and the connection position between the first mounting part 230 and the connecting part 120 can also be set arbitrarily. The connection between the first mounting part 230 and the connecting part 120 can be achieved with minimal modifications to the connecting part 120, and the spatial layout is also more convenient.

[0042] It should be noted that the housing part of the vibration motor 210, which is clamped and fixed by the first mounting part 230 and the second mounting part 240, has no restriction on the rotation of its shaft 211.

[0043] Reference Figure 3 and Figure 4 As shown, in some embodiments of this utility model, the first mounting part 230 defines a positioning cavity 231. The end of the positioning cavity 231 away from the connecting part 120 is an open end. The vibration motor 210 is partially embedded in the positioning cavity 231 and fits against the inner wall of the positioning cavity 231. Thus, the positioning cavity 231 limits the vibration motor 210 and enables quick positioning and installation during installation, saving operation time. The second mounting part 240 is connected to the open end of the first mounting part 230. The second mounting part 240 abuts against the side of the vibration motor 210 away from the first mounting part 230, thereby clamping and fixing the vibration motor 210.

[0044] It should be noted that the inner wall of the positioning cavity 231 has a wire hole to avoid the positive and negative terminals of the vibration motor 210.

[0045] Reference Figure 3and Figure 4 As shown, in some embodiments of this utility model, the second mounting portion 240 defines a recess 241 on the side facing the first mounting portion 230. Both ends of the recess 241 are open. The vibration motor 210 is partially embedded in the recess 241 and fits against the inner wall of the recess 241. This increases the contact area between the second mounting portion 240 and the vibration motor 210, reduces damage to the vibration motor 210, and also more firmly secures the vibration motor 210. In some specific embodiments, such as... Figure 4 As shown, the second mounting part 240 has a U-shaped structure.

[0046] Based on the above embodiments, it is conceivable that a rubber pad can also be provided inside the recess 241 to avoid damaging the vibration motor 210.

[0047] Reference Figure 3 and Figure 4 As shown, in some embodiments of this utility model, the first mounting part 230 is provided with first threaded holes 232 on opposite sides of the vibration motor 210, and the second mounting part 240 is provided with a first through hole 242 corresponding to the first threaded holes 232. The first through hole 242 is aligned with the first threaded holes 232 and a first screw 250 is inserted to connect the first mounting part 230 and the second mounting part 240. The structure is simple and easy to install, and the vibration motor 210 is securely fixed with first screws 250 on opposite sides. Obviously, the first through hole 242 may or may not have an internal thread.

[0048] Reference Figure 1 and Figure 2 As shown, in some embodiments of this utility model, the connecting portion 120 defines a mounting cavity 121, and the first mounting portion 230 and the second mounting portion 240 are both located within the mounting cavity 121. It can be understood that the connecting portion 120 of the steering wheel body 100 usually needs to define a mounting cavity 121 to install various components. Therefore, in this embodiment, the first mounting portion 230 and the second mounting portion 240 are arranged within the mounting cavity 121 to make full use of the existing space and achieve a compact structure.

[0049] Reference Figures 2 to 4 As shown, in some embodiments of this utility model, the connecting part 120 is provided with at least two mounting posts 122 in the mounting cavity 121. Each mounting post 122 is provided with a second threaded hole 123. The first mounting part 230 is provided with a second through hole 233 corresponding to the second threaded hole 123. The second through hole 233 is aligned with the second threaded hole 123 and a second screw 260 is inserted to connect the first mounting part 230 and the connecting part 120. The structure is simple and the installation is convenient.

[0050] It is understandable that the mounting post 122 is provided on the metal part of the connection portion 120 to facilitate heat conduction and heat dissipation.

[0051] Reference Figure 2 and Figure 3 As shown, in some embodiments of this utility model, the end of the mounting post 122 away from the connecting part 120 is provided with a mating plane 124, the second threaded hole 123 is provided on the mating plane 124, and the first mounting part 230 is attached to the mating plane 124 to increase the contact area between the first mounting part 230 and the mounting post 122. On the one hand, this ensures the stability of the connection, and on the other hand, it also facilitates heat conduction between the first mounting part 230 and the mounting post 122.

[0052] In some specific embodiments, two mounting posts 122 are provided, and two second through holes 233 are provided on the first mounting part 230, which are located on opposite sides of the first mounting part 230, and the connection is stable.

[0053] Reference Figure 3 and Figure 4 As shown, in some embodiments of this utility model, the left and right ends of the rotating shaft 211 each have a mating section with a circular cross-sectional shape. An eccentric block 220 is provided with an eccentric hole 221 adapted to the mating section. The eccentric block 220 is fitted onto the mating section through the eccentric hole 221 and has an interference fit with the mating section. The advantage of this arrangement is that, on the one hand, it facilitates the installation of the eccentric block 220, and on the other hand, it increases the possibility of expanding the vibration mode. In this embodiment, the two eccentric blocks 220 are symmetrically distributed, with a phase angle of 0 degrees between them, and the vibration mode is linear vibration. If the relative angle between the two eccentric blocks 220 is adjusted during installation, for example, to a 180-degree phase angle, a circular or elliptical vibration mode can be achieved. Of course, other phase angles can also be used to achieve different vibration modes.

[0054] In some embodiments of this utility model, the vibration motor 210 is configured as a brushed DC motor, which has a simple and reliable structure, a wide and flexible speed range, and is convenient to maintain and inexpensive.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine different embodiments or examples described in this specification.

[0056] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A dual-eccentric vibration motor structure for a motor vehicle steering wheel, characterized in that, include: A steering wheel body, the steering wheel body including an annular grip portion and a connecting portion, the connecting portion being located inside the annular grip portion and having its left and right ends respectively connected to the annular grip portion; The vibration assembly includes a vibration motor and two eccentric blocks. The vibration motor is mounted on the connecting part and has rotating shafts distributed on the left and right. The two ends of the rotating shafts extend out of the vibration motor and are respectively connected to the eccentric blocks. The two eccentric blocks are arranged symmetrically with respect to the rotating shafts and are located on the left and right sides of the connecting part.

2. The dual eccentric vibration motor structure for a motor vehicle steering wheel according to claim 1, characterized in that, The vibration assembly also includes: A first mounting part is mounted on the connecting part; The second mounting part is connected to the first mounting part; The vibration motor is located between the first mounting part and the second mounting part, and is clamped and fixed by the first mounting part and the second mounting part.

3. The dual eccentric vibration motor structure for a motor vehicle steering wheel according to claim 2, characterized in that, The first mounting portion defines a positioning cavity, with one end of the positioning cavity away from the connecting portion being an open end. The vibration motor portion is partially embedded in the positioning cavity and fits against the inner wall of the positioning cavity. The second mounting portion is connected to the open end of the first mounting portion and abuts against the side of the vibration motor away from the first mounting portion.

4. The dual eccentric vibration motor structure for a motor vehicle steering wheel according to claim 3, characterized in that, The second mounting portion defines a recess on the side facing the first mounting portion, and the vibration motor portion is embedded in the recess and fits against the inner wall of the recess.

5. The dual eccentric vibration motor structure for a motor vehicle steering wheel according to claim 4, characterized in that, The first mounting part has a first threaded hole on each of the opposite sides of the vibration motor. The second mounting part has a first through hole corresponding to the first threaded hole. The first through hole is aligned with the first threaded hole and a first screw is inserted through it to connect the first mounting part and the second mounting part.

6. The dual eccentric vibration motor structure for a motor vehicle steering wheel according to claim 2, characterized in that, The connecting portion defines a mounting cavity, and both the first mounting portion and the second mounting portion are located within the mounting cavity.

7. The dual eccentric vibration motor structure for a motor vehicle steering wheel according to claim 6, characterized in that, The mounting cavity is provided with at least two mounting posts, each of which is provided with a second threaded hole. The first mounting part is provided with a second through hole corresponding to the second threaded hole. The second through hole is aligned with the second threaded hole and a second screw is inserted through it to connect the first mounting part and the connecting part.

8. The dual eccentric vibration motor structure for a motor vehicle steering wheel according to claim 7, characterized in that, The mounting post has a mating plane at one end away from the connecting part, the second threaded hole is located on the mating plane, and the first mounting part is fitted to the mating plane.

9. The dual eccentric vibration motor structure for a motor vehicle steering wheel according to claim 1, characterized in that, The left and right ends of the rotating shaft have mating sections, the cross-sectional shape of the mating sections is circular, and the eccentric block is provided with an eccentric hole adapted to the mating section. The eccentric block is sleeved on the mating section through the eccentric hole and is interference-fitted with the mating section.

10. The dual eccentric vibration motor structure for a motor vehicle steering wheel according to claim 1, characterized in that, The vibration motor is configured as a brushed DC motor.

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