CN219635091U

CN219635091U - Rearview mirror folder and rearview mirror

Info

Publication number: CN219635091U
Application number: CN202321118007.4U
Authority: CN
Inventors: 张海涛; 吴双竹
Original assignee: Guangzhou Wei Si Automobile Parts Co ltd
Current assignee: Guangzhou Wei Si Automobile Parts Co ltd
Priority date: 2023-05-09
Filing date: 2023-05-09
Publication date: 2023-09-05
Anticipated expiration: 2033-05-09

Abstract

The utility model discloses a rearview mirror folder and a rearview mirror, and relates to the technical field of rearview mirrors. The rearview mirror folder comprises a driving piece, a planetary gear set, a spur gear and an output shaft assembly; the planetary gear set comprises a first gear and a second gear, the first gear is connected with an output shaft of the driving piece, the second gear comprises a first annular gear and an outer annular gear which are coaxial, and the first annular gear is in transmission connection with the first gear; the spur gear is meshed with the outer gear ring; the output shaft assembly penetrates through the spur gear and is fixed relative to the spur gear. The rearview mirror folder provided by the utility model can have higher speed reduction ratio and transmission efficiency.

Description

Rearview mirror folder and rearview mirror

Technical Field

The utility model relates to the technical field of rearview mirrors, in particular to a rearview mirror folder and a rearview mirror.

Background

After parking, in order to avoid damage to the automobile rearview mirror caused by external force collision, the automobile rearview mirror needs to be rotated to the inner side of the automobile body by a certain angle so as to reduce the opening angle of the automobile rearview mirror.

Currently, automobile rearview mirrors are usually driven to fold by an electric device. However, the driving devices of the existing automobile rearview mirrors generally adopt worm screws or helical gears for transmission, so that the speed reduction is relatively small.

Disclosure of Invention

The utility model provides a rearview mirror folder and a rearview mirror, which are used for improving a speed reduction ratio.

The utility model provides a rearview mirror folder, comprising:

a driving member;

the planetary gear set comprises a first gear and a second gear, the first gear is connected with an output shaft of the driving piece, the second gear comprises a first annular gear and an outer annular gear which are coaxial, and the first annular gear is in transmission connection with the first gear;

the spur gear is connected with the outer gear ring in a meshed manner;

the output shaft assembly penetrates through the straight gear and is fixed relative to the straight gear.

Based on the technical scheme, the speed reduction penetration between the driving piece and the output shaft assembly is realized through the planetary gear set and the spur gear in the rearview mirror folder. It will be appreciated that the transmission between the drive member and the output shaft assembly is a spur transmission. Therefore, the rearview mirror folder has higher speed reduction ratio and transmission efficiency.

In some possible embodiments, the planetary gear set further includes an upper cover, the upper cover covers one end of the second gear close to the first ring gear, and the upper cover and the second gear are combined to form a containing cavity;

the first gear is located in the accommodating cavity.

In some possible embodiments, the planetary gear set further includes three planetary gears, the three planetary gears are disposed on a peripheral side of the first gear, and each of the three planetary gears is in driving connection between the first gear and the second gear.

In some possible embodiments, the planetary gear comprises a first tooth part and a second tooth part which are coaxial, and a second annular gear is arranged on one side of the upper cover, which is close to the accommodating cavity;

the first tooth part is respectively connected with the first gear and the second annular gear in a meshed manner;

the second tooth part is meshed with the first annular gear.

In some possible embodiments, the rearview mirror folder further comprises a housing and an end cap, the housing and the end cap cooperating to define a mounting cavity;

the driving piece, the planetary gear set and the spur gear are all installed in the installation cavity;

the output shaft assembly comprises an output shaft and a base arranged at one end of the output shaft, the base is arranged at one end of the shell away from the end cover in a relative rotating mode, the output shaft sequentially penetrates through the shell and the end cover, and the output shaft protrudes relative to one side of the end cover away from the shell.

In some possible embodiments, at least one guide groove is formed on one side, close to the shell, of the base, and the at least one guide groove is arranged around the axis of the output shaft assembly;

the mirror-image folder further includes a ball rollably mounted in the at least one guide groove and in rolling contact with the housing.

In some possible embodiments, two guiding grooves with central symmetry are formed on one side, close to the shell, of the base, and one ball is installed in each guiding groove in a rolling mode.

In some possible embodiments, the rearview mirror folder further comprises a snap ring, the snap ring being in positioning connection with the spur gear to limit relative rotation of the snap ring and the spur gear;

the clamping ring is sleeved on the output shaft and is clamped with the output shaft.

In some possible embodiments, the rearview mirror folder further comprises a compressed elastic member, wherein the elastic member is sleeved on the output shaft;

one end of the elastic piece is abutted to the clamping ring, one end of the output shaft, which is far away from the base, is provided with a check ring, and the check ring is abutted to one end of the elastic piece, which is far away from the clamping ring.

In addition, the utility model also provides a rearview mirror, which comprises the rearview mirror folder provided in each embodiment.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 illustrates an exploded structural schematic of a folder in some embodiments;

FIG. 2 illustrates a schematic diagram of a second gear in some embodiments;

FIG. 3 shows a schematic structural view of an upper cover in some embodiments;

fig. 4 shows a schematic of the structure of a planetary gear in some implementations.

Description of main reference numerals:

1000-a folder;

110-a housing; 120-end caps; 130-a bracket; 101-a mounting cavity;

200-planetary gear set; 210-a first gear; 220-a second gear; 221-a first ring gear; 222-an outer ring gear; 230-upper cover; 231-a second ring gear; 240-planetary gears; 241—first teeth; 242-second teeth; 201-a receiving cavity;

300-spur gear; 310-positioning blocks;

400-an output shaft assembly; 410-a base; 411-guide slots; 412-limiting blocks; 420-output shaft;

510-a driver; 520-a control circuit board;

610-balls; 620-wear-resistant shims; 630-snap ring; 631-positioning grooves; 640-an elastic member; 650-check ring; 660-baffle.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

As shown in fig. 1, in the embodiment, a rear view mirror folder (hereinafter referred to as folder 1000) is provided, which can be used in a rear view mirror to drive a mirror body structure (not shown) in the rear view mirror to rotate for folding and unfolding.

As shown in fig. 1, the folder 1000 may include a drive 510, a planetary gear set 200, a spur gear 300, and an output shaft assembly 400.

Wherein the planetary gear set 200 includes a first gear 210 and a second gear 220. The first gear 210 may be fixedly coupled to the output shaft 420 of the driver 510. Thus, the first gear 210 may be driven to rotate by the driving member 510.

Referring again to fig. 2, the second gear 220 may include a first ring gear 221 and an outer ring gear 222 coaxially disposed. The first ring gear 221 and the outer ring gear 222 may be of unitary construction. In an embodiment, the first ring gear 221 may be in driving connection with the first gear 210 to achieve power transmission. It can be appreciated that, when the first ring gear 221 rotates under the driving of the first gear 210, the outer ring gear 222 may also synchronously rotate along with the first ring gear 221.

In an embodiment, spur gear 300 may be in meshed connection with outer ring gear 222. And the number of teeth of spur gear 300 may be greater than the number of teeth of outer ring gear 222. In addition, spur gear 300 may be fixedly coupled to output shaft assembly 400. When the outer gear ring 222 rotates, the spur gear 300 can be driven to rotate, and the output shaft assembly 400 is driven to rotate by the spur gear 300.

The present utility model realizes the speed reduction transmission between the driving member 510 and the output shaft assembly 400 through the planetary gear set 200 and the spur gear 300, and it is understood that the transmission between the driving member 510 and the output shaft assembly 400 is a spur gear transmission. Compared with worm or helical gear transmission in the prior art, the utility model can obtain larger speed reduction ratio, improve transmission efficiency and reduce energy loss.

Further, as shown in fig. 1, the folder 1000 also includes a housing 110 and an end cap 120. The housing 110 may cooperate with the end cap 120 to define a mounting cavity 101 for receiving other structural members of the folder 1000. In an embodiment, the housing 110 and the end cover 120 may be fixedly connected by a buckle.

In other embodiments, the housing 110 and the end cap 120 may be fixedly connected by a screw connection or the like.

In some embodiments, the driver 510 may be a motor. The driver 510 may be fixedly mounted in the mounting cavity 101 by the bracket 130. The bracket 130 may be fixedly connected to the housing 110 by means of screw connection or the like.

In addition, the folder 1000 further includes a control circuit board 520, and the control circuit board 520 may be electrically connected with the driving member 510. Thus, the operation of the driving member 510 may be controlled by the control circuit board 520. In an embodiment, the control circuit board 520 may be fixedly disposed between the bracket 130 and the end cover 120, and may be fixed by a structure limit, a screw connection, or a clamping connection.

As shown in fig. 1 and 3, in some embodiments, the planetary gear set 200 further includes an upper cover 230. The upper cover 230 may cover an end of the second gear 220 adjacent to the first ring gear 221. In addition, the upper cover 230 has a hollow structure, the upper cover 230 and the second gear 220 may be combined to form a housing 201, and the first gear 210 may be located in the housing 201. In an embodiment, the upper cover 230 may be fixedly disposed with respect to the bracket 130. Illustratively, the upper cover 230 may be fixed to the support 130 by means of structural limitation, adhesion, or clamping.

Referring again to FIG. 4, in some embodiments, the planetary gear set 200 further includes three planet gears 240. Three planetary gears 240 may be disposed in the accommodation chamber 201. The first gear 210 may be an external gear and straight teeth. Three planetary gears 240 may be disposed around the circumference of the first gear 210, and the three planetary gears 240 may be in driving connection between the first gear 210 and the second gear 220, so as to achieve driving force.

In some embodiments, planetary gears 240 may be double gears. Accordingly, the planetary gear 240 may include first and second teeth 241 and 242 that are integral and coaxial, and the first and second teeth 241 and 242 are straight teeth. In an embodiment, the number of teeth of the first tooth portion 241 may be equal to the number of teeth of the first gear 210. And the number of teeth of the first teeth 241 may be smaller than the number of teeth of the second teeth 242. In addition, the inner wall of the upper cover 230 is provided with a second ring gear 231, the second ring gear 231 is straight, and the number of teeth of the second ring gear 231 is greater than the number of teeth of the first tooth portion 241.

In an embodiment, one side of the first tooth portion 241 may be engaged with the first gear 210. The other side of the first tooth portion 241 may be engaged with the second ring gear 231 of the upper cover 230.

The second tooth 242 may be accommodated at an end of the second gear 220 near the first ring gear 221. And the second tooth 242 may be engaged with the first ring gear 221 of the second gear 220. Thereby, a driving connection between the first gear 210 and the second gear 220 can be achieved, and power transmission can be achieved. In the embodiment, the number of teeth of the first ring gear 221 is greater than the number of teeth of the second tooth 242.

In the embodiment, the outer gear ring 222 is located outside the accommodating cavity 201, the spur gears 300 may be disposed on one side of the outer gear ring 222 in parallel, and the axis of the spur gears 300 may be parallel to the axis of the second gear 220. The outer ring gear 222 may be in meshed connection with the spur gear 300.

In some embodiments, the number of teeth of the first ring gear 221 is greater than the number of teeth of the outer ring gear 222, and the number of teeth of the outer ring gear 222 is less than the number of teeth of the spur gear 300. In addition, the first ring gear 221 and the outer ring gear 222 are also straight teeth.

In an embodiment, each gear in the planetary gear set 200 is located in the receiving cavity 201. Accordingly, the noise generated during the operation of the planetary gear set 200 can be reduced from being transmitted outwards, and the noise reduction function is realized, so that the use experience of a user is improved.

As shown in fig. 1, the output shaft assembly 400 may include a base 410 and an output shaft 420. The output shaft 420 and the base 410 may be fixedly connected by clamping, bonding, or integrally molding. In an embodiment, the base 410 may be disposed around one end of the output shaft 420.

The output shaft 420 may sequentially pass through the housing 110, the bracket 130, the control circuit board 520, and the end cap 120. The end of the output shaft 420 remote from the base 410 may protrude relative to the side of the end cap 120 remote from the housing 110. The end of the output shaft 420 remote from the base 410 may be used to connect to a mirror structure in a rearview mirror to drive the mirror structure to rotate.

The base 410 may be limited to an end of the housing 110 away from the end cap 120, and may close an opening structure of the end of the housing 110 away from the end cap 120. It will be appreciated that the output shaft 420 is rotatable relative to the housing 110, the end cap 120, the control circuit board 520, and the bracket 130, and the base 410 is rotatable relative to the housing 110.

As shown in fig. 1, at least one guiding slot 411 is formed on a side of the base 410 near the housing 110. The guide slots 411 may be arc-shaped, and at least one guide slot 411 may be disposed around the axis of the output shaft assembly 400. In addition, the folder 1000 further includes a ball 610, and the ball 610 is rollably disposed in the at least one guide slot 411. And the side of the ball 610 remote from the base 410 may be in rolling contact with an end wall of the housing 110 at the end remote from the end cap 120. In an embodiment, by providing the balls 610 between the base 410 and the end cap 120, frictional resistance between the base 410 and the end cap 120 can be reduced, reducing energy loss.

In some embodiments, two guiding slots 411 may be formed on a side of the base 410 near the housing 110, and the two guiding slots 411 may be symmetrical about the output shaft 420. In addition, the extension length of the guide slot 411 may be matched with the rotation stroke of the mirror structure. In the embodiment, a ball 610 is disposed in each guiding slot 411, and the ball 610 can roll relative to the guiding slot 411.

In other embodiments, one, three or five guide slots 411 may be formed on a side of the base 410 near the housing 110. Two, three, four or five equal numbers of balls 610 may be disposed in each guide slot 411.

As shown in fig. 1, a limiting block 412 is also provided on a side of the base 410 near the housing 110 in a protruding manner. Correspondingly, a travel groove (not shown) matched with the limiting block 412 is formed at one end of the housing 110 near the base 410. The stopper 412 is slidably fitted in the stroke groove. The travel slots may extend around the axis of the output shaft 420. And the extension length of the travel groove can be matched with the rotation travel of the mirror body structure. In the embodiment, the limiting block 412 is matched with the travel slot, and can be used for limiting the rotation travel of the output shaft 420, thereby limiting the rotation travel of the mirror structure.

In some embodiments, a wear pad 620 is also provided between base 410 and housing 110. The wear-resistant pad 620 may be sleeved on the output shaft 420, and the wear-resistant pad 620 is arranged between the base 410 and the housing 110.

As shown in fig. 1, the spur gear 300 may be sleeved on the output shaft 420. In addition, the folder 1000 further includes a snap ring 630 and an elastic member 640. The snap ring 630 may be sleeved on the output shaft 420 and located on a side of the spur gear 300 away from the base 410. In an embodiment, the snap ring 630 may be fixed relative to the spur gear 300.

Specifically, a plurality of positioning blocks 310 are convexly arranged on one side of the spur gear 300, which is close to the snap ring 630. The snap ring 630 may be provided with a plurality of positioning slots 631 that cooperate with the positioning block 310. The positioning blocks 310 can be inserted into the positioning grooves 631 in a one-to-one correspondence manner to limit the relative rotation of the snap ring 630 and the spur gear 300.

In some embodiments, three positioning blocks 310 are convexly disposed on one side of the spur gear 300 near the snap ring 630, and the three positioning blocks 310 may be uniformly distributed around the circumference of the spur gear 300 at intervals. Correspondingly, three positioning grooves 631 can be formed on the snap ring 630. The three positioning blocks 310 can be positioned and inserted in the three positioning grooves 631 in a one-to-one correspondence manner. In an embodiment, the snap ring 630 may be snap-fit with the output shaft 420.

The elastic member 640 may also be sleeved on the output shaft 420, and located on a side of the snap ring 630 away from the spur gear 300. In addition, the output shaft 420 is further sleeved with a retainer 650 and a baffle 660. The retainer 650 may abut a side of the resilient member 640 remote from the snap ring 630. The retaining piece 660 may be located on a side of the retaining ring 650 away from the elastic member 640 and fixedly engaged with the output shaft 420. In some embodiments, spring 640 may be selected. And the elastic member 640 may be in a compressed state.

In other embodiments, the elastic member 640 may alternatively be a flexible post or the like.

In the working process, the driving piece 510 can drive the first gear 210 to rotate, the first gear 210 can drive the spur gear 300 to rotate through the planetary gear 240 and the second gear 220 in sequence, and then, the spur gear 300 can drive the output shaft 420 to rotate through the snap ring 630, so that power transmission is realized.

In the embodiment, the transmission between the driving member 510 and the output shaft assembly 400 is realized through the planetary gear set 200 and the spur gear 300, so that the speed reduction ratio in the transmission process can be improved by about 100. Meanwhile, the transmission efficiency can reach about 80 percent.

In some embodiments, the planetary gear set 200, spur gear 300, housing 110, end cap 120, and carrier 130 may all be made of plastic. In one aspect, the weight of the folder 1000 may be reduced, saving material costs. On the other hand, the molding plasticization of each structural member can be realized, and the structural quality and the production efficiency are improved. In addition, the folder 1000 provided by the utility model is compact in structure and occupies smaller space.

The embodiment also provides a rearview mirror, which may include the folder 1000 provided in the embodiment and a mirror structure (not shown), where the mirror structure may be mounted on the output shaft 420, and the output shaft 420 may drive the mirror structure to rotate, so as to fold and unfold the rearview mirror.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims

1. A rearview mirror folder, comprising:

a driving member;

the spur gear is connected with the outer gear ring in a meshed manner;

2. The rearview mirror folder as in claim 1, wherein the planetary gear set further comprises an upper cover, wherein the upper cover covers one end of the second gear adjacent to the first ring gear, and wherein the upper cover and the second gear are combined to form a containing cavity;

the first gear is located in the accommodating cavity.

3. The rearview mirror folder as in claim 2, wherein the planetary gear set further comprises three planetary gears, the three planetary gears being disposed on a peripheral side of the first gear, the three planetary gears each being drivingly connected between the first gear and the second gear.

4. A rearview mirror folder as claimed in claim 3, wherein the planetary gear comprises a first tooth and a second tooth which are coaxial, and a second annular gear is arranged on one side of the upper cover, which is close to the accommodating cavity;

the second tooth part is meshed with the first annular gear.

5. The rearview mirror folder of claim 1, further comprising a housing and an end cap, the housing and end cap cooperating to define a mounting cavity;

6. The rearview mirror folder as in claim 5, wherein said base defines at least one guide slot adjacent said housing, said at least one guide slot being disposed about the axis of said output shaft assembly;

7. The rearview mirror folder according to claim 6, wherein two guide grooves with central symmetry are formed in one side of the base, which is close to the housing, and one ball is installed in each guide groove in a rolling manner.

8. The rearview mirror folder of claim 5, further comprising a snap ring in positional connection with the spur gear to limit relative rotation of the snap ring and the spur gear;

9. The rearview mirror folder as in claim 8, further comprising a compressed elastic member, wherein the elastic member is sleeved on the output shaft;

10. A rear view mirror comprising a rear view mirror folder as claimed in any one of the claims 1 to 9.