Rearview mirror folder

Abstract

The utility model provides a rearview mirror folder, and relates to the technical field of automobile accessories, the rearview mirror folder comprises a shell, the shell is provided with an annular groove and a placement groove, the annular groove is communicated with the placement groove, the annular groove is rotatably covered with an end cover, and the placement groove is covered with a cover plate; the transmission mechanism comprises a worm gear rotationally installed in the annular groove and a driving assembly arranged in the placement groove, the driving assembly can drive the worm gear to rotate in the annular groove, the worm gear can drive the end cover to rotate synchronously, and the end cover can make the worm gear abut against the groove bottom wall of the annular groove; the lubricating structure is located between the annular groove and the worm gear and can reduce friction between the worm gear and the annular groove. The rearview mirror has the advantages that noise generated in the folding process of the rearview mirror is reduced, and the rearview mirror can be folded more smoothly.

Description

Technical Field

[0001] The present application relates to the technical field of automobile accessories, and in particular to a rearview mirror folder. Background Art

[0002] With the increasing degree of automation, the manual adjustment structure of the car rearview mirror has gradually withdrawn from the market, and the automatic adjustment structure is becoming more and more widely used. In the rearview mirror folder with automatic adjustment function, the motor and transmission assembly are indispensable components.

[0003] A Chinese patent with application number CN202120268349.9 in the related technology proposes a rearview mirror folder, which includes a shell and a gear assembly; an annular groove is provided on the shell, the center of the annular groove is a through hole, a tube shaft is coaxially arranged in the through hole, and a plurality of first protrusions are equidistantly arranged circumferentially on the side wall of the tube shaft; the gear assembly includes a gear and a gear seat; the upper end of the gear seat is coaxially arranged on one end face of the gear; an inner hole is provided in the center of the gear, the tube shaft is coaxially arranged in the inner hole, the gear is coaxially arranged in the annular groove, an annular step is provided on the side wall of the inner hole, and the end with a smaller outer circumferential diameter of the annular step is provided between the first protrusion and the bottom of the annular groove, the diameter of the end with a smaller outer circumferential diameter of the annular step is smaller than the diameter of the first protrusion, and the diameter of the end with a larger outer circumferential diameter of the annular step is greater than or equal to the diameter of the first protrusion. The operator connects the tube shaft and the gear by pressing. Specifically, the annular step on the side wall of the inner hole of the gear is pressed between the first protrusion set on the side wall of the tube shaft and the bottom of the annular groove. At the same time, the outer wall of the gear is jointly restricted by the outer circular side surface of the annular groove, making it difficult for the gear to detach from the tube shaft. Then, the drive assembly is installed in the shell, and the output end of the drive assembly is connected to the gear transmission. Finally, the remaining components and the shell cover are installed in the shell to achieve the installation of the rearview mirror folder.

[0004] With regard to the above-mentioned related technologies, since the gear is rotatably installed in the annular groove through the pipe shaft, the gear can rotate smoothly in the housing. Since the bottom of the gear is in sliding contact with the bottom wall of the annular groove when rotating, when dust accumulates in the annular groove, the gear will generate friction with the bottom wall of the annular groove during the rotation of the housing, which will not only affect the smooth rotation of the gear, but also cause wear of the gear and the housing, and even generate noise. Utility Model Content

[0005] In order to improve the problem of large friction between the gear and the bottom wall of the annular groove when the gear rotates in the housing, the present application provides a rearview mirror folder.

[0006] The present application provides a rearview mirror folding device adopts the following technical solution:

[0007] A rearview mirror folder, comprising

[0008] a housing, on which an annular groove and a placement groove are provided, the annular groove is communicated with the placement groove, an end cover is rotatably installed on the annular groove, and a cover plate is installed on the placement groove;

[0009] a transmission mechanism, the transmission mechanism includes a worm wheel rotatably installed in the annular groove and a driving component arranged in the placement groove, the driving component can drive the worm wheel to rotate self in the annular groove, the worm wheel can drive the end cover to rotate synchronously, and the end cover can press the worm wheel against the bottom wall of the annular groove; and

[0010] a lubrication structure, located between the annular groove and the worm wheel, can reduce the friction between the worm wheel and the annular groove.

[0011] Furthermore, the lubrication structure includes lubricating oil filled between the end of the worm wheel and the bottom wall of the annular groove.

[0012] Furthermore, an annular embedding groove is formed on the bottom wall of the annular groove, the lubricating oil is located in the annular embedding groove, and a sliding block inserted and adapted to the annular embedding groove is fixed on the end face of the worm wheel, and the lubricating oil fills between the sliding block and the inner wall of the annular embedding groove.

[0013] Furthermore, a plurality of sliding blocks corresponding to the annular embedding groove are provided, and the plurality of sliding blocks are evenly distributed at intervals along the circumferential direction of the worm wheel.

[0014] Furthermore, the notch size of the annular embedding groove gradually decreases towards the bottom wall direction, and the sliding block is set as an arc-shaped strip structure inserted and adapted to the annular embedding groove.

[0015] Furthermore, a fixing ring is fixed on the end face of the worm wheel, the worm wheel and the fixing ring are coaxially arranged, the outer diameter of the fixing ring is larger than the diameter of the worm wheel, the sliding block is located on the fixing ring, when the sliding block is inserted into the annular embedding groove, the fixing ring is hermetically buckled at the notch of the annular embedding groove, and the outer peripheral wall of the fixing ring slips and fits with the inner side wall of the annular groove.

[0016] Furthermore, a through hole is provided in the middle of the annular groove, a plurality of arc-shaped plates are arranged in the through hole, the plurality of arc-shaped plates are arranged at intervals along the circumferential direction of the annular groove on the bottom wall of the annular groove, and the inner side wall of the fixing ring slips and fits with the outer side wall of the plurality of arc-shaped plates.

[0017] Furthermore, a convex block is fixed on the end face of the worm wheel on the side away from the fixing ring, and a plugging groove for the convex block to be inserted is formed on the end cover. Under the plugging action of the convex block and the plugging groove, the worm wheel can drive the end cover to rotate at the notch of the annular groove.

[0018] In summary, the present application includes at least one of the following beneficial technical effects:

[0019] 1. By providing an annular groove on the bottom wall of the annular recess and filling lubricating oil in the annular groove, and inserting the slider at the end of the worm wheel into the annular groove, at this time, the lubricating oil fills the space between the slider and the inner wall of the annular groove, ensuring that when the worm wheel rotates in the annular groove, the lubricating oil can reduce the friction between the worm wheel and the bottom wall of the annular groove, thereby reducing the noise generated during the folding of the rearview mirror and making the folding of the rearview mirror smoother;

[0020] 2. Under the combined action of the fixed ring and the multiple arc-shaped plates, when the worm wheel rotates in the annular groove, its radial runout is restricted, and the end cover can restrict the axial runout generated when the worm wheel rotates in the annular groove, ensuring that the drive assembly can smoothly drive the worm wheel to rotate self - axially in the annular groove, thereby driving the rearview mirror to fold smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following - described drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 is the overall structural schematic diagram of the embodiment of the present application.

[0023] Figure 2 is the exploded view of the housing, end cover, cover plate and worm wheel in the embodiment of the present application.

[0024] Figure 3 is the structural schematic diagram of the worm wheel and the convex block in the embodiment of the present application.

[0025] Reference numerals: 1, housing; 2, annular groove; 3, placement groove; 4, end cover; 5, cover plate; 6, worm wheel; 7, drive assembly; 71, motor; 72, first worm; 73, transmission worm wheel; 74, transmission shaft; 75, second worm; 8, annular groove; 9, slider; 10, fixed ring; 11, through hole; 12, arc - shaped plate; 13, convex block; 14, insertion groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] To make the objectives, technical solutions and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions in the present invention with reference to the accompanying drawings in the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0027] The present application embodiment discloses a rearview mirror folding device. Figure 1 , Figure 2 and Figure 3 A rearview mirror folder includes a shell 1 and a transmission mechanism arranged in the shell 1. The shell 1 is provided with an annular groove 2 and a placement groove 3. The annular groove 2 and the placement groove 3 are connected. A through hole 11 is opened in the middle of the annular groove 2. The transmission mechanism includes a worm gear 6 rotatably mounted in the annular groove 2 and a driving assembly 7 arranged in the receiving groove 3. A base is provided at the bottom of the receiving groove 3. The driving assembly 7 includes a motor 71 fixed on the base, a first worm 72 fixedly connected to the output shaft of the motor 71, a transmission worm wheel 73 meshing with the first worm 72, a transmission shaft 74 fixedly connected coaxially with the transmission worm wheel 73, and a second worm 75 fixedly connected coaxially with one end of the transmission shaft 74. The first worm 72 is rotatably mounted in the receiving groove 3, and the length direction of the first worm 72 is consistent with the center axis direction of the worm wheel 6. The transmission shaft 74 rotatably mounts the transmission worm wheel 73 and the second worm 75 in the receiving groove 3, and the transmission shaft 74, the transmission worm wheel 73 and the second worm 75 are all located between the first worm 72 and the worm wheel 6, the second worm 75 is vertically distributed with the first worm 72, and the second worm 75 is meshed with the worm wheel 6. When the motor 71 drives the first worm 72 to rotate, the first worm 72 drives the second worm 75 to rotate through the transmission worm wheel 73 and the transmission shaft 74 , and the rotating second worm 75 drives the worm wheel 6 to rotate in the annular groove 2 .

[0028] In order to enable the second worm 75 to drive the worm wheel 6 to rotate stably, refer to Figure 1 and Figure 2 The slot of the placement slot 3 is covered with a cover plate 5 for shielding dust, and the rotating cover on the annular groove 2 is provided with an end cover 4 for pressing the worm wheel 6 against the bottom wall of the annular groove 2. A plurality of protrusions 13 are protruding from the end surface of one side of the worm wheel 6, and the plurality of protrusions 13 are integrally formed with the worm wheel 6, and the plurality of protrusions 13 are arranged at intervals along the circumference of the worm wheel 6; the end cover 4 is provided with a plug-in slot 14 for the protrusions 13 to be plugged in, and when the end cover 4 is rotated and installed at the slot of the annular groove 2, the protrusions 13 are stably plugged in the plug-in slot 14, so that the worm wheel 6 can drive the end cover 4 to rotate synchronously. The setting of the end cover 4, on the one hand, prevents the worm wheel 6 from generating axial runout during the self-rotation process, and on the other hand, connects the rotating shaft of the rearview mirror with the end cover 4, and the worm wheel 6 drives the end cover 4 to rotate, thereby stably driving the rearview mirror to rotate and fold.

[0029] In order to reduce the friction between the worm wheel 6 and the annular groove 2 during rotation, refer to Figure 1 , Figure 2 and Figure 3A lubrication structure is provided between the annular groove 2 and the worm gear 6. In other embodiments, the lubrication structure is graphite powder provided between the contact surface of the annular groove 2 and the worm gear 6. In the embodiment of the present application, the lubrication structure includes lubricating oil filled between the end of the worm gear 6 and the bottom wall of the annular groove 2.

[0030] In order to reduce the leakage and loss of lubricating oil during the rotation of the worm gear 6, refer to Figure 2 and Figure 3 , a plurality of annular grooves 8 are provided on the bottom wall of the annular groove 2, the centers of the plurality of annular grooves 8 all coincide with the center of the annular groove 2, and the lubricating oil is located in the annular grooves 8. A fixing ring 10 is integrally formed on one end face of the worm wheel 6, and the fixing ring 10 is coaxially arranged with the worm wheel 6. A slider 9 which is plugged and adapted to the annular groove 8 is integrally formed on the side of the fixing ring 10 away from the worm wheel 6. There are a plurality of sliders 9 corresponding to the annular groove 8, and the plurality of sliders 9 are evenly distributed along the circumferential direction of the worm wheel 6. When the cover plate 5 buckles the worm wheel 6 in the annular groove 2, the plurality of sliders 9 are plugged in the annular groove 8, so that the worm wheel 6 is stably mounted in the annular groove 2, and the lubricating oil is filled between the slider 9 and the inner wall of the annular groove 8, and the fixing ring 10 covers the notch of the annular groove 8, so that the lubricating oil is stably stored in the annular groove 8. As the driving assembly 7 drives the worm wheel 6 to rotate in the annular groove 2, the slider 9 can slide quickly and quietly in the annular groove 8 under the lubrication of the lubricating oil, thereby minimizing the friction of the worm wheel 6 during the rotation process.

[0031] In order to avoid friction between the blades of the worm wheel 6 and the inner wall of the annular groove 2 during the rotation of the worm wheel 6, the inner diameter of the annular groove 2 is designed to be larger than the diameter of the worm wheel 6. Since the size of the worm wheel 6 is smaller than the size of the annular groove 2, radial runout is likely to occur when the worm wheel 6 rotates. Figure 2 and Figure 3 The worm wheel 6 is set as an annular structure, and a plurality of arc plates 12 are set in the through hole 11 of the annular groove 2, and the plurality of arc plates 12 are fixed on the groove bottom wall of the annular groove 2 at intervals along the circumferential direction of the annular groove 2. The outer diameter of the fixing ring 10 is equal to the inner diameter of the annular groove 2, so that when the worm wheel 6 is rotated and installed in the annular groove 2, the outer peripheral wall of the fixing ring 10 slides and fits with the inner side wall of the annular groove 2, and the inner side wall of the fixing ring 10 slides and fits with the outer side walls of the plurality of arc plates 12, ensuring that the worm wheel 6 is not easy to generate radial runout during the rotation process.

[0032] In order to enable the slider 9 to be quickly inserted into the annular groove 8, refer to Figure 2 and Figure 3, the notch size of the annular groove 8 gradually decreases towards the bottom wall of the groove, and the slider 9 is arranged as an arc-shaped strip structure adapted to be inserted into the annular groove 8, and the cross-section of the slider 9 is an inverted trapezoid, so that when the worm wheel 6 is placed into the annular groove 2, its slider 9 can be smoothly inserted into the annular groove 8.

[0033] The implementation principle of the rearview mirror folding device in the embodiment of the present application is as follows: The driving assembly 7 is installed on the housing 1, and then the worm wheel 6 is inserted into the annular groove 2 of the housing 1, so that a plurality of sliders 9 at the end of the worm wheel 6 are respectively inserted into the annular grooves 8 adapted thereto. At this time, the worm wheel 6 meshes with the second worm 75, and lubricating oil fills between the slider 9 and the inner wall of the annular groove 8. At the same time, the fixing ring 10 covers the notch of the annular groove 8, and the outer peripheral wall of the fixing ring 10 is slidably attached to the inner side wall of the annular groove 2, and the inner side wall of the fixing ring 10 is slidably attached to the outer side walls of a plurality of arc-shaped plates 12.

[0034] Then, the insertion slot 14 on the end cover 4 is aligned with the convex block 13 on the worm wheel 6, and the end cover 4 is rotated and buckled at the notch of the annular groove 2. At this time, the convex block 13 is stably inserted into the insertion slot 14 on the end cover 4. At the same time, the cover plate 5 is also buckled at the notch of the placement groove 3.

[0035] Finally, the rotating shaft of the rearview mirror is connected to the end cover 4. When the motor 71 is started, when the motor 71 drives the first worm 72 to rotate, the first worm 72 drives the second worm 75 to rotate through the transmission worm wheel 73 and the transmission shaft 74. The rotating second worm 75 drives the worm wheel 6 to rotate self in the annular groove 2. As the worm wheel 6 rotates stably in the annular groove 2, the worm wheel 6 drives the end cover 4 to rotate, so as to stably drive the rearview mirror to rotate and fold.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rearview mirror folding device, characterized in that: include The housing is provided with an annular groove and a placement groove, the annular groove is connected with the placement groove, the rotating cover on the annular groove is provided with an end cover, and the upper cover of the placement groove is provided with a cover plate; A transmission mechanism, the transmission mechanism comprising a worm wheel rotatably mounted in the annular groove and a driving assembly disposed in the receiving groove, the driving assembly being capable of driving the worm wheel to rotate in the annular groove, the worm wheel being capable of driving the end cover to rotate synchronously, and the end cover being capable of pressing the worm wheel against the bottom wall of the annular groove; and The lubrication structure is located between the annular groove and the worm gear, and can reduce the friction between the worm gear and the annular groove.

2. A rearview mirror folding device according to claim 1, characterized in that: The lubrication structure includes lubricating oil filled between the end of the worm wheel and the bottom wall of the annular groove.

3. A rearview mirror folder according to claim 2, characterized in that: An annular embedding groove is provided on the bottom wall of the annular groove, and lubricating oil is located in the annular embedding groove. A sliding block that is plugged and adapted to the annular embedding groove is fixed on the end face of the worm wheel, and the lubricating oil is filled between the sliding block and the inner wall of the annular embedding groove.

4. A rearview mirror folding device according to claim 3, characterized in that: A plurality of sliding blocks corresponding to the annular embedding groove are provided, and the plurality of sliding blocks are evenly distributed along the circumference of the worm wheel.

5. A rearview mirror folder according to claim 3, characterized in that: The size of the annular embedding groove gradually decreases toward the groove bottom wall, and the sliding block is configured as an arc-shaped strip structure that is plug-fitted with the annular embedding groove.

6. A rearview mirror folding device according to claim 4, characterized in that: A fixing ring is fixed on the end face of the worm wheel. The worm wheel and the fixing ring are coaxially arranged. The outer diameter of the fixing ring is larger than the diameter of the worm wheel. The slider is located on the fixing ring. When the slider is inserted into the annular groove, the fixing ring sealing buckle is installed at the notch of the annular groove. The outer peripheral wall of the fixing ring slides and fits with the inner wall of the annular groove.

7. A rearview mirror folding device according to claim 6, characterized in that: A through hole is arranged in the middle of the annular groove, and a plurality of arc plates are arranged in the through hole. The plurality of arc plates are arranged on the bottom wall of the annular groove at intervals along the circumference of the annular groove, and the inner side wall of the fixing ring is slidably fitted with the outer side walls of the plurality of arc plates.

8. A rearview mirror folding device according to claim 6, characterized in that: A protrusion is fixed on the end face of the worm wheel away from the fixing ring, and a plug-in groove for the protrusion to be plugged into is provided on the end cover. Under the plug-in action of the protrusion and the plug-in groove, the worm wheel can drive the end cover to rotate at the notch of the annular groove.

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