Transmission gear mounting structure of rearview mirror folder

Abstract

The utility model provides a transmission gear installation structure of a rearview mirror folder, and relates to the technical field of rearview mirror folders, the transmission gear installation structure comprises a shell used for rotatably installing a transmission gear and a transmission shaft, the shell comprises a bottom shell and a cover body buckled on the bottom shell, the bottom shell is provided with a transmission cavity used for containing the transmission gear and the transmission shaft, and the transmission gear is arranged in the transmission cavity. Mounting grooves communicated with the transmission cavity are formed in the two ends of the transmission cavity on the bottom shell; the two ends of the transmission shaft extend into the mounting grooves in the two ends of the transmission cavity; the elastic piece is located in the mounting groove and elastically abuts against the end of the transmission shaft; and the abutting part is located in the mounting groove and rotationally connected with the end of the transmission shaft, the abutting part is adjustably arranged in the length direction of the transmission shaft, and the end of the transmission shaft elastically abuts against the elastic part through the abutting part. The transmission shaft mounting structure has the effect that the situation that the transmission shaft cannot be stably mounted on the bottom shell due to machining errors of the transmission shaft is eliminated.

Description

Technical Field

[0001] The present application relates to the technical field of rearview mirror folders, and in particular to a transmission gear mounting structure of 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With the increasing degree of automation, the manual adjustment structure of the car rearview mirror has gradually withdrawn from the market, and the automatic adjustment structure is becoming more and more widely used.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. During the installation of the transmission assembly, the stability of the transmission assembly needs to be ensured.

[0003] In the related technology, a Chinese patent with application number CN202022570594.3 proposes a driving assembly of an electric folder of a car exterior rearview mirror, which includes a transmission assembly, a motor and a rotating connecting member. The motor and the rotating connecting member are connected through a transmission assembly. The transmission assembly includes a transmission shaft, which is arranged in a transmission cavity. One end of the transmission cavity is provided with an elastic resistance spring sheet. The transmission cavity is provided with a slot for placing the resistance spring sheet. The resistance spring sheet includes a clamping part and an elastic part. There are two clamping parts in total. The two clamping parts are respectively arranged at both ends of the elastic part. The slot includes a clamping groove for clamping the clamping part and an active groove for elastic movement of the elastic part. One end of the transmission shaft is against the elastic part.

[0004] Regarding the above-mentioned related technologies, although the transmission shaft is rotatably installed in the transmission cavity, and the elastic part abuts against one end of the transmission shaft, it can effectively prevent the axial runout of the transmission shaft during the rotation process, making the transmission of the transmission shaft more stable. However, considering the processing error of the transmission shaft, or the problem that the elastic part cannot be tightly pressed against the end of the transmission shaft after long-term use, the transmission shaft cannot be well rotatably installed in the transmission cavity, thereby affecting the stable transmission of the transmission shaft. Utility Model Content

[0005] In order to improve the problem that the transmission shaft cannot be well rotatably installed in the transmission cavity, thereby affecting the stable transmission of the transmission shaft, the present application provides a transmission gear installation structure of a rearview mirror folder.

[0006] The transmission gear installation structure of a rearview mirror folding device provided in the present application adopts the following technical solution:

[0007] A transmission gear installation structure for a rearview mirror folder is used to install a transmission gear, a transmission shaft is fixedly installed on the transmission gear, and the transmission shaft passes through the transmission gear, including

[0008] The housing is used for rotatably mounting the transmission gear and the transmission shaft, and the housing includes a bottom housing and a cover body buckled on the bottom housing, the bottom housing is provided with a transmission cavity for accommodating the transmission gear and the transmission shaft, and the bottom housing is provided with mounting grooves communicating with the transmission cavity at both ends of the transmission cavity, and both ends of the transmission shaft extend into the mounting grooves at both ends of the transmission cavity;

[0009] An elastic member is located in the installation groove and elastically abuts against the end of the transmission shaft;

[0010] The abutting piece is located in the installation groove and is rotatably connected to the end of the transmission shaft. The abutting piece is adjustably arranged along the length direction of the transmission shaft. The end of the transmission shaft is elastically abutted against the elastic piece through the abutting piece.

[0011] Furthermore, the elastic member is configured as an elastic strip, the bottom of the elastic strip is fixedly connected to the bottom wall of the bottom shell, the side surface of the top of the elastic strip abuts against the abutting member, and a gap is left between the elastic strip and the side wall of the mounting groove for the elastic strip to be deflected under force.

[0012] Furthermore, a protrusion is arranged on the side surface of the top of the elastic strip, and the side surface where the protrusion abuts against the abutting member is arranged as an arc surface.

[0013] Furthermore, the abutting member is configured as a threaded sleeve, a screw is coaxially rotatably mounted on the end of the transmission shaft, the threaded sleeve is threadedly sleeved on the end of the screw, and the threaded sleeve rotatably mounts the transmission shaft in the mounting groove through the screw.

[0014] Furthermore, a pressing block for pressing the threaded sleeve into the installation groove is arranged on the cover body.

[0015] Furthermore, the threaded sleeve is configured to be non-circular.

[0016] Furthermore, the inner wall of the installation groove fits snugly with the outer wall of the threaded sleeve.

[0017] Furthermore, an anti-collision layer is provided on the inner wall of the installation groove.

[0018] In summary, this application includes the following beneficial technical effects:

[0019] A clamping piece is installed at both ends of the transmission shaft. By adjusting the clamping piece along the length direction of the transmission shaft, the end of the transmission shaft is elastically abutted against the elastic piece through the clamping piece, thereby eliminating the problem that the elastic piece cannot be effectively elastically clamped against the end of the transmission shaft due to the processing error of the transmission shaft, and ensuring that the transmission shaft can be stably installed in the bottom shell of the shell, making the rotation of the transmission shaft more stable, thereby achieving smooth driving of the rearview mirror to be folded. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0022] Figure 2 It is a schematic diagram of the structure of the bottom shell, threaded sleeve, transmission gear, drive motor, drive worm, transmission worm and worm wheel in the embodiment of the present application.

[0023] Figure 3 It is a schematic diagram of the structure of the cover body, threaded sleeve, pressure block, transmission gear, transmission shaft and transmission worm in the embodiment of the present application.

[0024] Figure 4 It is a schematic diagram of the structure of the bottom shell, elastic strips, bumps, anti-collision layer, drive motor and drive worm in the embodiment of the present application.

[0025] Figure 5 It is a schematic diagram of the exploded structure of the threaded sleeve, screw, transmission gear, transmission shaft and transmission worm in the embodiment of the present application.

[0026] Figure numerals: 1. bottom shell; 2. cover body; 3. transmission chamber; 4. mounting groove; 5. elastic strip; 6. bump; 7. threaded sleeve; 8. screw; 9. pressure block; 10. anti-collision layer; 11. transmission gear; 12. transmission shaft; 13. driving motor; 14. driving worm; 15. transmission worm; 16. worm wheel. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The embodiment of the present application discloses a transmission gear mounting structure of a rearview mirror folder, which is used to mount a transmission gear 11. A transmission shaft 12 is fixedly mounted on the transmission gear 11. The transmission shaft 12 is coaxially arranged to pass through the transmission gear 11. Figure 1 , Figure 2 and Figure 3The mounting structure includes a housing, an elastic member and a fastening member. The housing includes a bottom housing 1 and a cover 2 buckled on the bottom housing 1. A transmission chamber 3 is provided on the bottom housing 1. A transmission shaft 12 rotatably mounts a transmission gear 11 in the transmission chamber 3. Both ends of the transmission chamber 3 are provided with mounting grooves 4 connected to the transmission chamber 3. Both ends of the transmission shaft 12 extend into the two mounting grooves 4 at both ends of the transmission chamber 3 and are rotatably mounted in the mounting grooves 4. A transmission worm 15 is also fixedly sleeved on the transmission shaft 12. A worm wheel 16 and a driving worm 14 are also provided on both sides of the transmission shaft 12. The driving worm 14 is rotatably mounted on the bottom housing 1 and meshes with the transmission gear 11. A driving motor for driving the driving worm 14 to rotate is also installed on the outside of the bottom housing 1. The worm gear 16 is rotatably mounted on the bottom shell 1 and meshes with the transmission worm 15. After the driving motor 13 drives the driving worm 14 to rotate, the driving worm 14 drives the transmission shaft 12 and the transmission worm 15 to rotate through the transmission gear 11. The rotating transmission worm 15 drives the worm gear 16 to rotate. A transmission part that drives the rearview mirror to rotate and fold is fixed on the worm gear 16, thereby realizing automatic folding of the rearview mirror.

[0029] Reference Figure 2 , Figure 3 and Figure 4 The elastic member may be one or more. In the embodiment of the present application, two elastic members are provided. The two elastic members are respectively arranged in two mounting grooves 4 and are both located at the ends of the transmission shaft 12. The elastic members are elastically abutted against the ends of the transmission shaft 12, so that when the transmission shaft 12 rotates in the transmission cavity 3 of the bottom shell 1, the jumping of the transmission shaft 12 along its length direction is limited, thereby ensuring the stable driving and folding of the rearview mirror. If there is an error in the length processing of the transmission shaft 12, after the transmission shaft 12 is installed in the transmission cavity 3, the strength of the abutment between the end of the transmission shaft 12 and the elastic member is insufficient, resulting in the problem of the transmission shaft 12 still jumping during the rotation process. Therefore, two clamping members are provided. The two clamping members are respectively located in the two installation grooves 4 and are rotatably connected to the two ends of the transmission shaft 12. The two clamping members can be adjusted along the length direction of the transmission shaft 12, so that during installation, the positions of the two clamping members on the transmission shaft 12 can be adjusted according to the length of the transmission shaft 12, so that the two clamping members are tightly pressed against the two elastic members, so that the jumping of the transmission shaft 12 along its length direction is limited, ensuring that the transmission shaft 12 can drive the transmission worm 15 and the transmission gear 11 to rotate smoothly in the transmission cavity 3.

[0030] Reference Figure 2 , Figure 3 , Figure 4 and Figure 5The elastic member can be set as a compression spring or a rubber pad. In the embodiment of the present application, the elastic member is set as an elastic strip 5 made of nylon material, and the bottom shell 1 is also made of nylon material. The bottom of the elastic strip 5 is integrally connected to the inner bottom wall of the bottom shell 1, so that the elastic strip 5 and the bottom shell 1 are self-contained, and the side surface of the top of the elastic strip 5 abuts against the abutting member to ensure that the elastic strip 5 has a better force effect. Compared with the traditional structure, this design has the same function, but in the present application, the elastic strip 5 is integrally connected to the bottom shell 1, so that during the processing, the elastic strip 5 and the bottom shell 1 can be integrally processed and formed, which controls the production cost. In order to improve the elastic abutment effect of the elastic strip 5 on the abutting member, a gap is left between the elastic strip 5 and the side wall of the mounting groove 4 for the elastic strip 5 to be deflected by force. Taking into account that the bottom of the elastic strip 5 is fixed and it will deflect when subjected to force, in order to ensure that the side of the top of the elastic strip 5 can still stably abut against the clamping member during the deflection, a protrusion 6 is provided on the side of the top of the elastic strip 5, and the side where the protrusion 6 abuts against the clamping member is set as an arc surface, so that when the elastic strip 5 is deflected under force, the protrusion 6 on the side can always be stably pressed against the clamping member.

[0031] Reference Figure 2 , Figure 3 , Figure 4 and Figure 5 , the abutting member is set as a threaded sleeve 7, a screw 8 is coaxially rotatably installed at the end of the transmission shaft 12, the threaded sleeve 7 is threadedly sleeved at the end of the screw 8, and the threaded sleeve 7 is placed in the installation groove 4, so that the threaded sleeve 7 can rotate the transmission shaft 12 in the installation groove 4 through the screw 8. When installing the transmission shaft 12, the threaded sleeves 7 at both ends can be driven to rotate on the screws 8 at both ends according to the length of the transmission shaft 12, so as to adjust the distance between the two threaded sleeves 7; then the transmission shaft 12 with the screw 8 and the threaded sleeve 7 is placed in the transmission cavity 3, so that the two threaded sleeves 7 are respectively placed in the two installation grooves 4, and at this time, the elastic strips 5 in the two installation grooves 4 are respectively tightly pressed against the end faces of the two threaded sleeves 7, thereby limiting the runout of the transmission shaft 12 along its length direction during the rotation process.

[0032] In order to further enable the transmission shaft 12 to rotate stably in the transmission cavity 3, it is also necessary to limit its radial runout. Figure 3 , Figure 4 and Figure 5 A pressing block 9 for pressing the threaded sleeve 7 into the mounting groove 4 is provided on the cover body 2. Two pressing blocks 9 are provided. The two pressing blocks 9 are respectively fixedly installed at the bottom of the cover body 2. When the cover body 2 is buckled on the bottom shell 1, the two pressing blocks 9 correspond to the two threaded sleeves 7 respectively and press the two threaded sleeves 7 tightly into the mounting groove 4.

[0033] In order to improve the stability of the pressure block 9 on the threaded sleeve 7, Figure 3 , Figure 4 and Figure 5 , the threaded sleeve 7 is set to be non-circular, and in the embodiment of the present application, the threaded sleeve 7 is set to be hexagonal. The corresponding pressure block 9 is used to ballast the threaded sleeve 7. The side surface is set to be V-shaped, and the bottom wall of the installation groove 4 is also set to be V-shaped, so that the threaded sleeve 7 can be stably ballasted in the installation groove 4 by the pressure block 9, so that the transmission shaft 12 is not easy to produce radial runout. At the same time, the screw 8 connected to the threaded sleeve 7 is rotatably installed at the end of the transmission shaft 12, so the stable ballast of the other threaded sleeve 7 by the pressure block 9 will not affect the stable rotation of the transmission shaft 12 in the transmission chamber 3.

[0034] In order to further improve the stability of the threaded sleeve 7 in the installation groove 4, refer to Figure 2 , Figure 4 and Figure 5 The inner wall of the mounting groove 4 is fitted closely with the outer wall of the threaded sleeve 7, and an anti-collision layer 10 is arranged on the inner wall of the mounting groove 4. The anti-collision layer 10 can be a sponge pad or a damping pad. The setting of the anti-collision pad can effectively prevent the transmission shaft 12 from shaking the threaded sleeve 7 through the screw 8 when rotating, thereby colliding with the inner wall of the mounting groove 4 to produce abnormal noise.

[0035] The implementation principle of the transmission gear mounting structure of a rearview mirror folder in an embodiment of the present application is as follows: first, the cover body 2 is removed from the bottom shell 1, and then, according to the length of the transmission shaft 12, the threaded sleeves 7 at both ends are driven to rotate on the screws 8 at both ends, thereby adjusting the distance between the two threaded sleeves 7; then, the transmission shaft 12 with the screw 8 and the threaded sleeve 7 is placed in the transmission cavity 3, so that the two threaded sleeves 7 are respectively placed in the two mounting grooves 4, and at this time, the elastic strips 5 in the two mounting grooves 4 are respectively tightly pressed against the end faces of the two threaded sleeves 7, thereby limiting the jumping of the transmission shaft 12 along its length direction during rotation. Then, the worm gear 16 and the driving worm 14 are installed on the bottom shell 1, so that the worm gear 16 is meshed with the driving worm 15 on the transmission shaft 12, and the driving worm 14 is meshed with the transmission gear 11 on the transmission shaft 12. At the same time, the driving motor 13 is installed on the outside of the base, and the driving motor 13 is connected to the driving worm 14. After the driving motor 13 drives the driving worm 14 to rotate, the driving worm 14 drives the transmission shaft 12 and the driving worm 15 to rotate through the transmission gear 11, and the rotating transmission worm 15 drives the worm gear 16 to rotate. A transmission member that drives the rearview mirror to rotate and fold is fixed on the worm gear 16, thereby realizing automatic folding of the rearview mirror.

[0036] After completing the installation of the transmission gear 11, the transmission shaft 12, the drive motor 13, the drive worm 14, the transmission worm 15 and the worm wheel 16, the cover plate is buckled onto the bottom shell 1. At this time, the two pressing blocks 9 on the cover plate correspond to the two threaded sleeves 7 respectively, and the two threaded sleeves 7 are tightly pressed into the installation groove 4, thereby limiting the radial runout of the transmission shaft 12 during the rotation process, so that the rearview mirror can be folded smoothly.

[0037] 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 it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A transmission gear mounting structure of a rearview mirror folder, used for mounting a transmission gear, a transmission shaft is fixedly mounted on the transmission gear, and the transmission shaft passes through the transmission gear, characterized in that: include The housing is used for rotatably mounting the transmission gear and the transmission shaft, and the housing includes a bottom housing and a cover body buckled on the bottom housing, the bottom housing is provided with a transmission cavity for accommodating the transmission gear and the transmission shaft, and the bottom housing is provided with mounting grooves communicating with the transmission cavity at both ends of the transmission cavity, and both ends of the transmission shaft extend into the mounting grooves at both ends of the transmission cavity; An elastic member is located in the installation groove and elastically abuts against the end of the transmission shaft; The abutting piece is located in the installation groove and is rotatably connected to the end of the transmission shaft. The abutting piece is adjustably arranged along the length direction of the transmission shaft. The end of the transmission shaft is elastically abutted against the elastic piece through the abutting piece.

2. The transmission gear mounting structure of the rearview mirror folder according to claim 1, characterized in that: The elastic member is configured as an elastic strip, the bottom of which is fixedly connected to the bottom wall of the bottom shell, the side surface of the top of the elastic strip abuts against the abutting member, and a gap is left between the elastic strip and the side wall of the installation groove for the elastic strip to be deflected by force.

3. The transmission gear mounting structure of the rearview mirror folder according to claim 2, characterized in that: A convex block is arranged on the side surface of the top of the elastic strip, and the side surface where the convex block abuts against the abutting member is arranged as an arc surface.

4. The transmission gear mounting structure of the rearview mirror folder according to claim 1, characterized in that: The fastening member is configured as a threaded sleeve, a screw rod is coaxially rotatably mounted on the end of the transmission shaft, the threaded sleeve is threadedly sleeved on the end of the screw rod, and the threaded sleeve rotatably mounts the transmission shaft in the mounting groove through the screw rod.

5. The transmission gear mounting structure of the rearview mirror folder according to claim 4, characterized in that: The cover body is provided with a pressing block for pressing the threaded sleeve into the installation groove.

6. The transmission gear mounting structure of the rearview mirror folder according to claim 5, characterized in that: The threaded sleeve is arranged in a non-circular shape.

7. The transmission gear mounting structure of the rearview mirror folder according to claim 6, characterized in that: The inner wall of the installation groove is closely matched with the outer wall of the threaded sleeve.

8. The transmission gear mounting structure of the rearview mirror folder according to claim 7, characterized in that: An anti-collision layer is arranged on the inner wall of the installation groove.

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