Silencing dial wheel automobile dial rod

Abstract

The utility model relates to the technical field of automobile lever manufacturing, and particularly discloses a mute lever automobile lever, which comprises a lever body, a lever rotating shaft installed in the lever body, and a manual lever with a lever shaft hole through which the lever rotating shaft passes, wherein the lever rotating shaft is provided with a radial boss, the hole wall of the lever shaft hole is provided with a sector limiting groove for embedding the radial boss to limit the rotation angle of the manual lever, and the outer side of the radial boss is covered with a flexible buffer pad. The mute lever automobile lever can solve the problem that the existing manual lever is prone to producing noise due to rigid impact when rotating to the limit position.

Description

Technical Field

[0001] This utility model relates to the field of automotive lever manufacturing technology, and in particular to an automotive lever with a silent dial. Background Technology

[0002] In the design of control levers in the steering wheel area of ​​automobiles, manual dials are a common human-machine interface component, widely used for functions such as controlling the start / stop of the rear wiper (usually a two-position switch) or adjusting the sensitivity of the rain sensor (multi-position adjustment). A typical structure of such a manual dial includes a dial body with a dial shaft hole, and a dial shaft fixed to the lever assembly and inserted into the dial shaft hole.

[0003] To achieve mechanical limiting of the rotation angle, a radial boss is typically designed on the dial wheel shaft, while a corresponding sector-shaped limiting groove is formed on the wall of the dial wheel shaft hole. During assembly, the radial boss is embedded in the sector-shaped limiting groove; when the user rotates the dial wheel, the radial boss rotates within the arc-shaped space of the sector-shaped limiting groove until its side contacts and collides with one end wall of the sector-shaped limiting groove, thereby preventing the dial wheel from rotating further, thus defining the effective rotation range of the dial wheel.

[0004] Currently, manual shift wheels and their shafts are made of rigid materials such as hard engineering plastics or metals (e.g., aluminum alloys). While this use of rigid materials ensures the structural strength and durability of the components, it also introduces a significant drawback: when the manual shift wheel is rotated to its limit, the radial boss rigidly collides with the end wall of the fan-shaped limiting groove within the shift wheel shaft hole. This hard contact produces a clearly audible "click" or impact noise. This noise not only reduces the feel and sophistication of operation but also becomes particularly jarring in vehicle environments that prioritize a quiet and refined user experience, affecting the driver's overall perception of the vehicle's interior quality.

[0005] Therefore, how to effectively eliminate or reduce the collision noise generated by the manual dial at the limit point, and improve the operating feel and quietness, has become a technical problem that urgently needs to be improved in the current structural design.

[0006] The information disclosed in this background section is included only to enhance the understanding of the context of this disclosure, and therefore may contain information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0007] One objective of this invention is to provide a car lever with a silent dial, which can solve the problem that existing manual dials are prone to noise due to rigid impact when rotated to their limit position.

[0008] To achieve the above objectives, this utility model provides a car lever with a silent dial, comprising:

[0009] The lever body;

[0010] The dial shaft is installed inside the dial lever body;

[0011] A manual dial has a dial shaft hole through which the dial shaft passes;

[0012] The dial shaft is provided with a radial boss, and the wall of the dial shaft hole is provided with a fan-shaped limiting groove for the radial boss to be inserted, so as to limit the rotation angle of the manual dial.

[0013] The outer side of the radial boss is covered with a flexible buffer pad.

[0014] Optionally, the flexible buffer pad is made of silicone or rubber, and the radial boss is made of rigid engineering plastic.

[0015] Optionally, the flexible buffer pad and the radial boss are a two-color injection molded connection structure.

[0016] Optionally, the flexible buffer pad and the radial boss are connected by adhesive bonding or ultrasonic welding.

[0017] Optional, also includes:

[0018] A circuit board, wherein the circuit board is provided with code tracks and is fixed to the dial shaft;

[0019] A spring-loaded brush is fixed to the manual dial and is positioned opposite to the circuit board.

[0020] A flexible conductive element, one end of which is electrically connected to the circuit board, and the other end of which is used to electrically connect to the vehicle's electronic control system.

[0021] Optionally, the wall of the dial shaft hole is further provided with a wave positioning groove, and the dial shaft is provided with a spring push rod that extends radially to elastically abut against the wave positioning groove.

[0022] Optionally, the manual dial includes an inner dial ring with a dial shaft hole and an outer ring trim piece that can be detachably fitted onto the outside of the inner dial ring.

[0023] Optionally, the inner ring of the dial is provided with a locking boss that engages axially with the outer ring trim.

[0024] Optionally, the outer ring trim is provided with an outwardly protruding handle boss.

[0025] Optionally, the dial shaft is provided with two manual dials, and the two manual dials are arranged side by side along the axial direction of the dial shaft.

[0026] Therefore, the silent dial lever provided by this utility model allows the radial boss of the dial shaft to be embedded in the fan-shaped limiting groove on the wall of the dial shaft hole of the manual dial when the user rotates the manual dial, and to rotate within the arc-shaped space of the fan-shaped limiting groove, thereby achieving mechanical limiting of the rotation angle.

[0027] The flexible buffer pad design on the outer side of the radial boss ensures that when the manual dial is rotated to its limit, the part that directly contacts the end wall of the fan-shaped limiting groove is not the rigid radial boss, but the flexible buffer pad. The flexible buffer pad absorbs collision energy through its own elastic deformation, effectively buffering the impact force and transforming a hard collision into a soft contact. This process significantly reduces the "clicking" noise generated by rigid collisions in traditional structures, thus solving the problem of high noise levels caused by rigid collisions in existing technologies. This not only improves the quietness and premium feel of manual dial operation but also maintains the reliability of angle limiting, making it suitable for vehicle environments with high requirements for cabin quietness.

[0028] Therefore, the car lever with silent dial provided by this utility model can solve the problem that existing manual dials are prone to noise due to rigid collisions when rotated to their limit positions. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A schematic diagram of the structure of a car lever with a silent dial provided for an embodiment;

[0031] Figure 2 A schematic diagram of the manual dial provided in the embodiment;

[0032] Figure 3 A schematic cross-sectional view of a car lever with a silent dial, perpendicular to the axis, provided for an embodiment;

[0033] Figure 4 A schematic cross-sectional view of a car lever with a silent dial, provided for an embodiment, parallel to the axis.

[0034] Figure 5 An exploded view of a car lever with a silent dial provided for an embodiment.

[0035] In the picture:

[0036] 1. The lever body;

[0037] 2. Dial wheel shaft; 201. Radial boss; 202. Flexible buffer pad; 203. Spring push rod;

[0038] 3. Manual dial; 301. Dial shaft hole; 3011. Fan-shaped limiting groove; 3012. Wave positioning groove; 302. Inner ring of dial; 3021. Snap-fit ​​boss; 303. Outer ring trim; 3031. Hand lever boss;

[0039] 4. Circuit board;

[0040] 5. Spring-loaded brush;

[0041] 6. Flexible conductive components. Detailed Implementation

[0042] In this utility model, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this utility model. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this utility model, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0043] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit the invention.

[0044] In the description of this utility model, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" logical relationship.

[0045] In this invention, 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 actual quantity, hierarchy, or order between these entities or operations.

[0046] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this invention is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a series of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0047] Similar to the understanding in the Examination Guidelines, in this utility model, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this utility model, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0048] In the description of the embodiments of this utility model, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the convenience of describing the specific embodiments of this utility model or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0049] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this utility model, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this utility model pertains, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0050] See Figures 1-5 This embodiment provides a car lever with a silent dial, including:

[0051] lever body 1;

[0052] The dial shaft 2 is installed inside the lever body 1;

[0053] The manual dial 3 has a dial shaft hole 301 through which the dial shaft 2 passes;

[0054] The dial shaft 2 is provided with a radial boss 201, and the dial shaft hole 301 is provided with a fan-shaped limiting groove 3011 for the radial boss 201 to be inserted into, so as to realize the rotation angle limitation of the manual dial 3.

[0055] The radial boss 201 is covered with a flexible buffer pad 202 on its outer side.

[0056] In practical implementation, the lever body 1 serves as a supporting structure, the dial wheel shaft 2 is fixedly installed inside the lever body 1, and the manual dial wheel 3 is sleeved on the dial wheel shaft 2 through its dial wheel shaft hole 301. When the user rotates the manual dial wheel 3, the radial boss 201 of the dial wheel shaft 2 will be embedded in the fan-shaped limiting groove 3011 on the wall of the dial wheel shaft hole 301 of the manual dial wheel 3, and rotate within the arc-shaped space of the fan-shaped limiting groove 3011, thereby achieving mechanical limiting of the rotation angle.

[0057] It is worth noting that the flexible buffer pad 202 design on the outer side of the radial boss 201 ensures that when the manual dial 3 is rotated to its limit position, the part that directly contacts the end wall of the fan-shaped limiting groove 3011 is not the rigid radial boss 201, but the flexible buffer pad 202. The flexible buffer pad 202 absorbs collision energy through its own elastic deformation, effectively buffering the impact force and transforming a hard collision into a soft contact. This process significantly reduces the "clicking" noise generated by rigid collisions in traditional structures, thus solving the problem of high noise caused by rigid collisions in existing technologies. This not only improves the quietness and premium feel of the manual dial 3 during operation but also maintains the reliability of the angle limit, making it suitable for vehicle environments with high requirements for cabin quietness.

[0058] Therefore, the silent dial lever provided by this utility model can solve the problem that the existing manual dial 3 is prone to noise due to rigid collision when rotated to the limit position.

[0059] In this embodiment, the flexible buffer pad 202 is made of silicone or rubber, and the radial boss 201 is made of rigid engineering plastic. In implementation, silicone or rubber materials possess excellent elasticity and damping properties, providing a gentle cushioning effect; while rigid engineering plastics (such as POM or nylon) ensure the structural strength and wear resistance of the radial boss 201. This material combination allows the flexible buffer pad 202 to effectively attenuate vibration and noise upon impact, while the radial boss 201 maintains the stability of the limiting structure. Through optimized combination of material properties, noise suppression is maximized without compromising the mechanical limiting function, and the service life of the component is extended.

[0060] In this embodiment, the flexible buffer pad 202 and the radial boss 201 are connected by a two-color injection molding process. During manufacturing, the two-color injection molding technology first injects rigid engineering plastic to form the main body of the radial boss 201, and then injects silicone or rubber material into the same mold to cover the outside of the radial boss 201, forming an integrated flexible buffer pad 202. This process ensures a gapless connection between the flexible buffer pad 202 and the radial boss 201, avoiding the risk of detachment that may occur with adhesives or mechanical fixation. During operation, the integrated structure ensures that the buffer pad remains firmly attached after multiple impacts and will not fail due to fatigue. This improves product reliability and consistency, simplifies the assembly process, and is suitable for mass production.

[0061] In some other embodiments, the flexible buffer pad 202 and the radial boss 201 are bonded or ultrasonically welded together. In practice, the bonding process uses epoxy resin or cyanoacrylate adhesive to fix the prefabricated flexible buffer pad 202 to the surface of the radial boss 201; ultrasonic welding utilizes high-frequency vibration to locally melt and fuse the contact surfaces of the buffer pad and the boss. Both methods achieve a strong connection and allow the flexible buffer pad 202 and the radial boss 201 to be manufactured separately as separate components and then combined through subsequent processes. The advantage is that it provides production flexibility, allowing for the selection of appropriate processes based on cost or equipment conditions, while ensuring that the connection strength meets the vibration and durability requirements of the vehicle environment.

[0062] In this embodiment, the car lever with silent dial further includes:

[0063] Circuit board 4, which has a code track and is fixed to the dial shaft 2;

[0064] Spring-loaded brush 5, which is fixed on the manual dial 3 and is positioned opposite to the circuit board 4;

[0065] A flexible conductive element 6, one end of which is electrically connected to the circuit board 4, and the other end of which is used to electrically connect to the vehicle's electronic control system.

[0066] Optionally, the flexible conductive element 6 can be a flexible circuit board 4 or a ribbon cable.

[0067] The circuit board 4 and the spring-loaded brush 5 assembly are used to realize the electrical signal detection function. In a specific implementation, the circuit board 4 is fixed to the dial wheel shaft 2, and its surface is provided with a code track (such as a conductive trace or optical coding pattern); the spring-loaded brush 5 is fixed to the manual dial wheel 3 and is positioned relative to the circuit board 4. When the user rotates the manual dial wheel 3, the manual dial wheel 3 drives the spring-loaded brush 5 to move relative to the circuit board 4, causing the spring-loaded brush 5 to slide or sense on the code track, thereby generating an electrical signal (such as a resistance change or a pulse signal) corresponding to the rotation angle. This electrical signal can be transmitted to the vehicle's electronic control system (such as the wiper controller) through the flexible conductive element 6 to identify the dial wheel position and execute the corresponding function. During operation, the noise reduction effect of the flexible buffer pad 202 works synergistically with the electrical signal detection function, improving both the operating feel and ensuring the accuracy of control. Its beneficial effect is to expand the intelligent application of the lever, such as for rain sensor adjustment or rear wiper control, while maintaining the advantage of low noise.

[0068] In this embodiment, the wall of the dial shaft hole 301 is also provided with a wave positioning groove 3012, and the dial shaft 2 is provided with a spring push rod 203 that extends radially to elastically abut against the wave positioning groove 3012. When the user rotates the manual dial 3, the end of the spring push rod 203 will move with the undulation of the wave positioning groove 3012. A slightly larger torque is required when crossing the crest, producing a slight resistance; when sliding into the trough, a clear positioning feeling is produced, possibly accompanied by a slight "click" tactile feedback (rather than noise). This process works in conjunction with the flexible buffer pad 202: the wave positioning groove 3012 and the spring push rod 203 are responsible for providing a clear gear feel at non-limiting points, while the radial boss 201 covered with the flexible buffer pad 202 is responsible for achieving silent soft limiting at the limit position, thereby decoupling "tactile feedback" from "auditory noise". Without producing unpleasant collision noise, it provides the driver with accurate gear perception and greatly optimizes the human-machine interaction experience.

[0069] Optionally, the manual dial 3 includes an inner dial ring 302 with a dial shaft hole 301, and an outer ring trim 303 detachably fitted onto the outside of the inner dial ring 302. Further, the inner dial ring 302 has a locking boss 3021 that engages axially with the outer ring trim 303, and the outer ring trim 303 has an outwardly protruding lever boss 3031.

[0070] In implementation, the inner ring 302 of the dial is the core functional component with the dial shaft hole 301, responsible for cooperating with the dial shaft 2 to achieve rotation and positioning; while the outer ring trim 303 serves as the operating part and appearance component that comes into direct contact with the user's hand. This split design allows the inner ring 302 to be reused as a universal component by levers of different models or functions, while the outer ring trim 303 can be customized with different surface patterns, logos, or textures according to specific functions (such as rear wiper control, menu selection, etc.), and can also use more textured materials such as metal or wood to enhance the interior's quality. This achieves the separation of standardization of the core structure and personalization of appearance functions, reducing the cost of mold development and inventory management, while meeting the needs of model differentiation.

[0071] In this embodiment, two manual dials 3 are provided on the dial shaft 2, and the two manual dials 3 are arranged side by side along the axial direction of the dial shaft 2. Each manual dial 3 independently has a flexible buffer pad 202 that cooperates with the dial shaft 2. They can control different vehicle functions respectively; for example, one is used to control the intermittent speed adjustment of the rear wiper, and the other is used to control the sensitivity of the rain sensor. The two manual dials 3 can rotate independently without interfering with each other. By integrating multiple silent dials on a single dial shaft 2, the space around the steering wheel is greatly saved, and multiple control functions are compacted and integrated, providing the driver with a centralized, convenient, and high-quality operating interface.

[0072] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A car lever with a silent dial, characterized in that, include: lever body (1); The dial shaft (2) is installed inside the lever body (1); The manual dial (3) has a dial shaft hole (301) through which the dial shaft (2) passes. The dial shaft (2) is provided with a radial boss (201), and the wall of the dial shaft hole (301) is provided with a fan-shaped limiting groove (3011) for the radial boss (201) to be inserted, so as to limit the rotation angle of the manual dial (3). The radial boss (201) is covered with a flexible buffer pad (202) on its outer side.

2. The automotive lever with silent dial according to claim 1, characterized in that, The flexible buffer pad (202) is made of silicone or rubber, and the radial boss (201) is made of rigid engineering plastic.

3. The automotive lever with silent dial according to claim 2, characterized in that, The flexible buffer pad (202) and the radial boss (201) are a two-color injection molded connection structure.

4. The automotive lever with silent dial according to claim 2, characterized in that, The flexible buffer pad (202) and the radial boss (201) are bonded or ultrasonically welded together.

5. The automotive lever with silent dial according to claim 1, characterized in that, Also includes: Circuit board (4), the circuit board (4) is provided with code track and is fixed on the dial shaft (2); Spring-loaded brush (5), the spring-loaded brush (5) is fixed on the manual dial (3) and is arranged opposite to the circuit board (4); A flexible conductive element (6) is provided, one end of which is electrically connected to the circuit board (4), and the other end is used to electrically connect to the vehicle's electronic control system.

6. The automotive lever with silent dial according to claim 1, characterized in that, The hole wall of the dial shaft hole (301) is also provided with a wave positioning groove (3012), and the dial shaft (2) is provided with a spring push rod (203) that extends radially to elastically abut against the wave positioning groove (3012).

7. The automotive lever with silent dial according to claim 1, characterized in that, The manual dial (3) includes an inner dial ring (302) with a dial shaft hole (301) and an outer ring trim (303) that can be detachably fitted onto the outside of the inner dial ring (302).

8. The automotive lever with silent dial according to claim 7, characterized in that, The inner ring (302) of the dial is provided with a locking boss (3021) that engages axially with the outer ring trim (303).

9. The automotive lever with silent dial according to claim 7, characterized in that, The outer ring trim (303) is provided with an outwardly protruding hand lever boss (3031).

10. The automotive lever with silent dial according to claim 1, characterized in that, The dial shaft (2) is provided with two manual dials (3), and the two manual dials (3) are arranged side by side along the axial direction of the dial shaft (2).

Images