Rearview mirror clutch structure and rearview mirror

Abstract

The utility model discloses rear -view mirror clutch structure and rear -view mirror, wherein rear -view mirror clutch structure, including: mounting seat, clutch subassembly and transmission subassembly, mounting seat swing joint has the floating plate, and the floating plate is provided with screw between mounting seat, and the one end of screw is hinged with the floating plate. Clutch subassembly includes elastic part and clutch piece, and clutch piece is screwed on the other end of screw, and elastic part is set up in screw. Transmission subassembly sets up in mounting seat, and transmission subassembly is set up in the periphery of clutch piece, and elastic part and clutch piece are opposite, to make clutch piece and transmission subassembly adhere, and transmission subassembly is used for driving clutch piece rotation and drive screw and make lifting movement. When screw moves to extreme position, screw is immobile and restricts the rotation of clutch piece, transmission subassembly still maintains the trend of driving at this moment, and clutch piece still keeps immobile, thereby produces the rotation clutch effect of transmission subassembly and clutch piece, thereby avoids the problem of adjustment failure.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a rearview mirror clutch structure, and a rearview mirror having a rearview mirror clutch structure. Background Technology

[0002] As a crucial device for drivers to observe the situation behind and to the sides of the vehicle, the rearview mirror plays a vital role in driving safety. It expands the driver's field of vision, effectively reduces blind spots, and lowers the risk of traffic accidents caused by blind spots. In related technologies, the adjustment mechanism installed inside the rearview mirror allows for the adjustment of the mirror's angle and visual range, thus providing the driver with optimal rear visibility. The adjustment mechanism typically includes a worm gear and a worm shaft. A motor drives the worm shaft to rotate, which in turn drives the worm gear. When the mirror reaches its extreme position, the worm gear stops rotating. The internal motor is prone to overheating or even burning out due to stalling, and the meshing teeth between the worm gear and worm shaft are susceptible to wear and tooth breakage, leading to adjustment failure. 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 rearview mirror clutch structure, which has the advantages of avoiding adjustment failure and improving service life.

[0004] This utility model also proposes a rearview mirror having the above-mentioned rearview mirror clutch structure.

[0005] The rearview mirror clutch structure according to this utility model includes: Screw; A clutch assembly includes an elastic element and a clutch element, wherein the clutch element is threadedly connected to one side of the screw, and the elastic element is sleeved on the screw; A transmission assembly is disposed between the clutch and the elastic member. The elastic member abuts against the transmission assembly so that the transmission assembly and the clutch are in contact. The transmission assembly is used to drive the clutch to rotate and drive the screw to move up and down.

[0006] According to the rearview mirror clutch structure described in this utility model, it has at least the following beneficial effects: the screw and the clutch are threadedly connected, the transmission assembly is disposed between the elastic element and the clutch, the elastic element and the transmission assembly abut against each other, so that the clutch and the transmission assembly press against each other and fit together. The transmission assembly can drive the clutch to rotate, thereby causing the screw to move up and down. When the screw moves to the limit position, such as the upper limit or lower limit position, the screw does not move and conversely restricts the rotation of the clutch. At this time, the driving force of the transmission assembly breaks through the friction between the clutch and the transmission assembly. The transmission assembly still maintains the driving tendency, while the clutch remains stationary, thereby producing the effect of rotational engagement and disengagement between the transmission assembly and the clutch, reducing the wear of the transmission assembly when the screw moves to the limit position, and thus avoiding the problem of adjustment failure.

[0007] According to some embodiments of the present invention, the rearview mirror clutch structure includes a transmission assembly comprising a worm, a worm wheel, and a driving member. The driving member drives the worm to rotate, and the outer ring of the worm wheel is connected to the worm to drive the worm wheel to rotate. The elastic member abuts against the worm wheel so that the worm wheel and the clutch member form a frictional engagement.

[0008] According to some embodiments of the present invention, the rearview mirror clutch structure has a first friction slope on the side of the clutch facing the worm gear, and the worm gear has a second friction slope that cooperates with the first friction slope.

[0009] According to some embodiments of the present invention, the rearview mirror clutch structure has a receiving groove on the side of the worm gear away from the clutch member, the elastic member is installed in the receiving groove, and the elastic member abuts against the bottom wall of the receiving groove.

[0010] According to some embodiments of the present invention, the rearview mirror clutch structure further includes a gasket, which is disposed on the side of the elastic member away from the clutch member, and one end face of the elastic member is attached to the gasket.

[0011] According to some embodiments of the present invention, a rearview mirror clutch structure is provided between the elastic element and the screw, and a sliding groove is provided on one side of the sleeve, through which the clutch element passes through the sliding groove and is mounted on the sleeve.

[0012] According to some embodiments of the present invention, the rearview mirror clutch structure has a limiting member on the side of the clutch member facing the top of the screw, and a limiting groove is provided on the outer peripheral wall of the bushing, with the limiting member engaging with the limiting groove.

[0013] The rearview mirror according to this utility model includes a rearview mirror clutch structure and a mounting base. A floating plate is movably connected to the mounting base. A screw is disposed between the floating plate and the mounting base. A transmission assembly is disposed on the mounting base. One side of the screw is hinged to the floating plate.

[0014] The rearview mirror according to this utility model has at least the following beneficial effects: When adjusting the rearview mirror angle, the continuous pressure provided by the elastic element ensures reliable engagement between the clutch and the transmission assembly. Simultaneously, the friction inclined surface enhances transmission stability. The cooperation between the transmission assembly and the clutch enables smooth driving, ensuring precise adjustment of the mirror angle and improving the adaptability of the driver's field of vision. Furthermore, when the screw is adjusted to its limit position, the clutch assembly and the transmission assembly will rotate relative to each other, avoiding the problem of high current heating or even burnout caused by drive component stall, and preventing wear and tear between the worm gear and worm wheel meshing, thus avoiding adjustment failure. This significantly enhances the deflection stability of the rearview mirror and extends its service life.

[0015] According to some embodiments of the present invention, the rearview mirror includes a ball head, a slot is provided on the side of the floating plate that is hinged to the screw, the screw is connected to a fixed slider, the slot and the fixed slider together form a ball head mounting groove, and the ball head is hinged to the ball head mounting groove.

[0016] According to some embodiments of the present invention, the rearview mirror has a snap-fit ​​protrusion on the ball head, the snap-fit ​​protrusion extending radially along the ball head, and a positioning groove on the groove wall of the snap-fit ​​groove, wherein the snap-fit ​​protrusion snaps into the positioning groove.

[0017] 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

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a cross-sectional view of the rearview mirror clutch structure according to an embodiment of the present invention; Figure 2 for Figure 1 An exploded view of the rearview mirror clutch mechanism is shown. Figure 3 for Figure 1 The diagram shows the structure of the clutch component; Figure 4 This is a cross-sectional view of the rearview mirror according to an embodiment of the present invention; Figure 5 for Figure 4 The diagram shows the structure of the floating plate.

[0019] Explanation of icon numbers: Screw 100; Bushing 110; Slide groove 111; Limiting groove 112; Ball head 120; Snap-fit ​​protrusion 121; Fixed slider 130; Clutch assembly 200; elastic element 210; clutch component 220; first friction inclined surface 221; clearance groove 222; gasket 230; limiting element 240; Transmission assembly 300; worm gear 310; worm wheel 320; second friction inclined surface 321; receiving groove 322; driving component 330; Mounting base 400; Floating plate 500; card slot 510; positioning slot 520. Detailed Implementation

[0020] 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.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying 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.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] 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.

[0024] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. 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.

[0025] The adjustment mechanism installed inside the car's rearview mirror allows for adjustment of the mirror's angle and field of vision, providing the driver with optimal rear visibility. The adjustment mechanism typically includes a worm gear and a worm shaft. A motor drives the worm shaft to rotate, which in turn drives the worm gear. When the mirror reaches its extreme position, the worm gear stops rotating. The internal motor is prone to overheating or even burning out due to stalling, and the meshing teeth between the worm gear and the worm shaft are susceptible to wear and tooth breakage, leading to adjustment failure.

[0026] Therefore, such as Figures 1 to 3 As shown, the rearview mirror clutch structure proposed in this utility model includes: a screw 100, a clutch assembly 200, and a transmission assembly 300. The clutch assembly 200 includes an elastic element 210 and a clutch element 220. The clutch element 220 is threadedly connected to one side of the screw 100, and the elastic element 210 is sleeved on the screw 100. The transmission assembly 300 is disposed between the clutch element 220 and the elastic element 210. The elastic element 210 abuts against the transmission assembly 300, so that the transmission assembly 300 and the clutch element 220 are in contact. That is, the elastic element 210 pushes the clutch element 220 to press against and adhere to the transmission assembly 300. The transmission assembly 300 is used to drive the clutch element 220 to rotate and drive the screw 100 to move up and down. When the screw 100 moves to the limit position, such as the upper limit or lower limit position, the screw 100 does not move and conversely restricts the rotation of the clutch element 220. At this time, the driving force of the transmission component 300 breaks through the friction between the clutch 220 and the transmission component 300. The transmission component 300 still maintains the driving trend, while the clutch 220 remains stationary. This produces the effect of rotational engagement and disengagement between the transmission component 300 and the clutch 220, reducing the wear of the transmission component 300 when the screw 100 moves to the limit position, thus avoiding the problem of adjustment failure.

[0027] In some embodiments of this utility model, such as Figures 1 to 3As shown, the transmission assembly 300 includes a worm 310, a worm wheel 320, and a drive member 330. The drive member 330 drives the worm 310 to rotate and is a motor. The outer ring of the worm wheel 320 is connected to the worm 310 to drive the worm wheel 320 to rotate. The worm 310 is a helical shaft with threads on its outer peripheral wall. The elastic member 210 abuts against the worm wheel 320, and the friction generated between the end faces of the worm wheel 320 and the clutch member 220 causes the worm wheel 320 and the clutch member 220 to form a frictional engagement, thereby driving the clutch member 220 to rotate and driving the screw 100 to perform lifting and lowering movements.

[0028] In some embodiments of this utility model, such as Figures 1 to 3 As shown, the clutch 220 has a first friction slope 221 on the side facing the worm gear 320, and the worm gear 320 has a second friction slope 321 that cooperates with the first friction slope 221. The cooperation of the first friction slope 221 and the second friction slope 321 can significantly increase the contact area. Under the preload of the elastic element 210, the first friction slope 221 and the second friction slope 321 are tightly fitted, thereby improving the transmission efficiency of friction torque. When the worm gear 320 rotates, the second friction slope 321 of the worm gear 320 drives the clutch 220 to rotate synchronously through friction, ensuring stable power transmission to the screw 100. When the screw 100 reaches its limit position and can no longer move, the clutch 220 remains stationary, and the friction between the clutch 220 and the worm gear 320 is broken, causing relative sliding between the worm gear 320 and the clutch 220, thus achieving transmission separation. This protects the transmission meshing between the worm 310 and the worm wheel 320, avoiding problems such as tooth shaving and gear breakage during meshing, and preventing the high current heating or even burnout caused by the stall of the drive component 330, thus avoiding the problem of electric adjustment failure.

[0029] In some embodiments of this utility model, such as Figures 1 to 3 As shown, the worm gear 320 has a receiving groove 322 on the side opposite to the clutch 220. The elastic element 210 is installed in the receiving groove 322, which provides installation space for the elastic element 210. The elastic element 210 abuts against the bottom wall of the receiving groove 322. The elastic element 210 is a spring. The receiving groove 322 can prevent the elastic element 210 from radially shifting, tilting, or moving during the force process, ensuring that the elastic element 210 is always in the preset working position and improving the installation stability of the elastic element 210.

[0030] In some embodiments of this utility model, such as Figures 1 to 3As shown, the clutch assembly 200 also includes a gasket 230, which is disposed on the side of the elastic member 210 away from the clutch assembly 220, with one end face of the elastic member 210 in contact with the gasket 230. The gasket 230 can ensure that the elastic member 210 is subjected to uniform force, thereby improving the stability of the overall structure.

[0031] In some embodiments of this utility model, such as Figures 1 to 3 As shown, a bushing 110 is provided between the elastic element 210 and the screw 100. The bushing 110 has a cylindrical structure and is hollow. A sliding groove 111 is provided on one side of the bushing 110, and the sliding groove 111 extends along the axial direction of the bushing 110. The clutch element 220 is correspondingly provided with a clearance groove 222. The clutch element 220 passes through the sliding groove 111 and is mounted on the bushing 110, and the clutch element 220 can slide relative to the sliding groove 111.

[0032] In some embodiments of this utility model, such as Figures 1 to 3 As shown, a limiting element 240 is provided on the side of the clutch 220 facing the top of the screw 100. The limiting element 240 is a retaining spring, which has the characteristics of simple structure and convenient installation. A limiting groove 112 is provided on the outer peripheral wall of the bushing 110. The limiting element 240 is engaged in the limiting groove 112. After the retaining spring is opened, it is engaged in the limiting groove 112 of the bushing 110, which can generate a continuous and stable radial clamping force to ensure that the relative position of the bushing 110 and the transmission assembly 300 remains fixed.

[0033] In actual driving scenarios, drivers frequently adjust the left and right angles of their rearview mirrors to adapt to different road conditions, meet oncoming traffic, or check blind spots. These are high-frequency actions, while vertical adjustments are typically less frequently changed after the initial settings. Therefore, if... Figure 4 and Figure 5 As shown, the rearview mirror according to an embodiment of the present invention includes a rearview mirror clutch structure and a mounting base 400. A floating plate 500 is movably connected to the mounting base 400. A screw 100 is disposed between the floating plate 500 and the mounting base 400. A transmission assembly 300 is disposed on the mounting base 400. One side of the screw 100 is hinged to the floating plate 500. The rearview mirror is a rearview mirror with manual up-and-down adjustment and electric left-and-right adjustment functions. The mounting base 400 is provided with connecting posts, and the screw 100 and connecting posts are spaced apart along the length direction of the floating plate 500. The side of the floating plate 500 connected to the mounting base 400 is a spherical surface, and the side of the connecting post connected to the floating plate 500 has a shape adapted to the spherical surface. A spring is sleeved on the connecting post.

[0034] Specifically, the spring presses against the side of the floating plate 500 away from the mounting base 400, providing a stable preload to the floating plate 500. This allows the floating plate 500 to maintain a relatively stable position in its initial state and also acts as a buffer and reset mechanism during the swinging motion of the floating plate 500 driven by the screw 100. The lifting and lowering movement of the screw 100 pushes the floating plate 500 to swing left and right around the connecting column, thereby adjusting the left and right angles of the rearview mirror.

[0035] According to the rearview mirror of this utility model embodiment, by adopting the rearview mirror clutch structure of this utility model embodiment, when adjusting the rearview mirror angle, the continuous pressure provided by the elastic element 210 ensures reliable engagement between the clutch element 220 and the transmission component 300. At the same time, the friction inclined surface enhances transmission stability. The cooperation between the transmission component 300 and the clutch element 220 enables smooth driving, ensuring precise adjustment of the mirror angle and improving the adaptability of the driving vision. Meanwhile, when the screw 100 is adjusted to the limit position, the clutch component 200 and the transmission component 300 will rotate relative to each other, avoiding the problem of high current heating or even burnout caused by the stall of the drive component 330, and avoiding the wear of the teeth between the worm gear 310 and the worm wheel 320 and the damage of the gear teeth, thereby avoiding the problem of adjustment failure, significantly enhancing the deflection stability of the rearview mirror and extending its service life.

[0036] In some embodiments of this utility model, such as Figure 4 and Figure 5 As shown, the screw 100 includes a ball head 120. A slot 510 is provided on the side of the floating plate 500 that is hinged to the screw 100. A fixed slider 130 is connected to the screw 100. The dimensions of the fixed slider 130 are adapted to the slot 510 so that the fixed slider 130 can slide into the slot 510 during screw 100 assembly. The slot 510 and the fixed slider 130 together form a ball head mounting groove, and the ball head 120 is hinged to the ball head mounting groove. In some applications, simply aligning the fixed slider 130 connected to the screw 100 with the slot 510 on the floating plate 500 and gently pushing it in is sufficient to quickly and initially fix the ball head 120. Then, the fixed slider 130 is fixed to the floating plate 500 using fasteners. This simple, intuitive, and convenient installation method makes the installation process more efficient and accurate.

[0037] In some embodiments of this utility model, such as Figure 4 and Figure 5As shown, the ball head 120 is provided with a locking protrusion 121, which has a cylindrical structure and extends radially along the ball head 120. The groove wall of the locking groove 510 is provided with a positioning groove 520. The locking protrusion 121 is locked into the positioning groove 520 to restrict the rotation of the screw 100. When the clutch 220 drives the screw 100 to move up and down, the screw 100 can only move axially and cannot rotate, thus ensuring that the thrust of the screw 100 is converted into the torque that pushes the floating plate 500 to swing. When the screw 100 moves to the limit position, the screw 100 can reverse the rotation of the clutch 220. The clutch 220 does not move, while the worm gear 320 keeps rotating, thus producing a rotational clutch effect. This avoids the wear of the teeth between the worm 310 and the worm gear 320 and the damage of the gear teeth, thereby avoiding adjustment failure.

[0038] Other configurations and operations of the rearview mirror according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0039] 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 rearview mirror clutch structure, characterized in that, include: Screw; A clutch assembly includes an elastic element and a clutch element, wherein the clutch element is threadedly connected to one side of the screw, and the elastic element is sleeved on the screw; A transmission assembly is disposed between the clutch and the elastic member. The elastic member abuts against the transmission assembly so that the transmission assembly and the clutch are in contact. The transmission assembly is used to drive the clutch to rotate and drive the screw to move up and down.

2. The rearview mirror clutch structure according to claim 1, characterized in that: The transmission assembly includes a worm, a worm wheel, and a driving component. The driving component drives the worm to rotate. The outer ring of the worm wheel is connected to the worm to drive the worm wheel to rotate. The elastic component abuts against the worm wheel to make the worm wheel and the clutch component form a frictional engagement.

3. The rearview mirror clutch structure according to claim 2, characterized in that: The clutch component has a first friction slope on the side facing the worm gear, and the worm gear has a second friction slope that cooperates with the first friction slope.

4. The rearview mirror clutch structure according to claim 2, characterized in that: The worm gear has a receiving groove on the side opposite to the clutch, and the elastic element is installed in the receiving groove, with the elastic element abutting against the bottom wall of the receiving groove.

5. The rearview mirror clutch structure according to claim 4, characterized in that: The clutch assembly further includes a gasket, which is disposed on the side of the elastic member opposite to the clutch assembly, and one end face of the elastic member is in contact with the gasket.

6. The rearview mirror clutch structure according to claim 1, characterized in that: A bushing is provided between the elastic element and the screw, and a groove is provided on one side of the bushing. The clutch element passes through the groove and is mounted on the bushing.

7. The rearview mirror clutch structure according to claim 6, characterized in that: The clutch is provided with a limiting element on the side facing the top of the screw, and the outer peripheral wall of the bushing is provided with a limiting groove, and the limiting element is engaged with the limiting groove.

8. A rearview mirror, characterized in that, include: The rearview mirror clutch structure according to any one of claims 1 to 7; A mounting base is movably connected to a floating plate. A screw is disposed between the floating plate and the mounting base. A transmission assembly is disposed on the mounting base. One side of the screw is hinged to the floating plate.

9. The rearview mirror according to claim 8, characterized in that: The screw includes a ball head, and a slot is provided on the side of the floating plate that is hinged to the screw. The screw is connected to a fixed slider, and the slot and the fixed slider together form a ball head mounting groove, and the ball head is hinged to the ball head mounting groove.

10. The rearview mirror according to claim 9, characterized in that: The ball head is provided with a snap-fit ​​protrusion that extends radially along the ball head. The groove wall of the snap-fit ​​groove is provided with a positioning groove, and the snap-fit ​​protrusion snaps into the positioning groove.

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