A folding rearview mirror and an automobile

Abstract

The utility model relates to the technical field of automobile rear -view mirror, specifically relates to a folding rear -view mirror and a car, one kind of folding rear -view mirror, including a rear -view mirror casing, its characterized in that still includes: first positioning column body, first positioning column body is installed in the first predetermined position of rear -view mirror carrier, first drive helical gear is sleeved in first positioning column body, and first drive helical gear is provided with first step inclined plane, first meshing gear is fixedly arranged on first positioning column body and is adjacent to first drive helical gear.

Description

Technical Field

[0001] This utility model relates to the field of automotive rearview mirror technology, specifically to a folding rearview mirror and an automobile. Background Technology

[0002] Rearview mirrors are tools used by drivers to directly obtain external information about the rear, sides, and bottom of the vehicle while seated in the driver's seat. To facilitate driver operation, prevent traffic accidents, and ensure personal safety, all countries mandate the installation of rearview mirrors on vehicles, and all rearview mirrors must be adjustable. Existing rearview mirrors typically consist of two motor units working together. While some existing rearview mirrors have manual rotation modes, these modes are relatively complex and lack a clear indication of the current manual rotation position. Utility Model Content

[0003] In view of the shortcomings of the existing technology, this utility model provides a folding rearview mirror and a car.

[0004] On the one hand, this utility model provides a folding rearview mirror, including a rearview mirror housing, which further includes:

[0005] The first positioning post; the first positioning post is installed at a first predetermined position on the rearview mirror carrier;

[0006] A first transmission helical gear is fitted onto the first positioning column, and a first stepped inclined surface is provided on the first transmission helical gear.

[0007] The first meshing gear is fixedly mounted on the first positioning column and is arranged adjacent to the first transmission helical gear.

[0008] Preferably, in the above-mentioned folding rearview mirror, a first stepped positioning protrusion is provided at the end of the first meshing gear near the first transmission helical gear, and the first stepped positioning protrusion meshes with the first stepped inclined surface.

[0009] Preferably, in the above-mentioned folding rearview mirror, the first positioning post includes a first positioning post and a first auxiliary positioning post coaxial with the first positioning post. The first auxiliary positioning post is provided with a first type of protrusion, and the inner side of the first meshing gear is provided with a second type of protrusion that matches the first type of protrusion. The second type of protrusion of the first meshing gear is engaged with the first type of protrusion of the first auxiliary positioning post.

[0010] Preferably, the above-mentioned folding rearview mirror further includes:

[0011] The first disc spring is fitted onto the first positioning post and is disposed adjacent to the first meshing gear;

[0012] The first support bushing is fitted onto the first positioning column and positioned between the first meshing gear and the first disc spring.

[0013] Preferably, the above-mentioned folding rearview mirror further includes:

[0014] The first limiting snap ring is disposed adjacent to the first disc spring and is used to limit the first disc spring and the first meshing gear.

[0015] On the other hand, this utility model further provides a folding rearview mirror, including a rearview mirror housing, and also includes:

[0016] The second positioning post is installed at a first predetermined position on the rearview mirror carrier.

[0017] The second transmission helical gear is fixedly mounted on the rearview mirror housing and fitted onto the second positioning column. The second transmission helical gear is provided with an L-shaped platform.

[0018] The second meshing gear is fixedly mounted on the second positioning column and is arranged adjacent to the second transmission helical gear.

[0019] Preferably, in the above-mentioned folding rearview mirror, the second positioning post includes a second positioning post and a second auxiliary positioning post coaxial with the second positioning post. The second positioning post is provided with a positioning protrusion that matches the positioning groove. When the positioning protrusion matches the positioning groove, the second positioning post and the second auxiliary positioning post are coaxial.

[0020] Preferably, the above-mentioned folding rearview mirror further includes a friction plate, which is disposed between the second meshing gear and the second transmission helical gear to match the L-shaped platform.

[0021] Preferably, the above-described folding rearview mirror further includes;

[0022] The second disc spring is fitted onto the second positioning post and is disposed adjacent to the second meshing gear;

[0023] The second support bushing is fitted onto the first positioning column and positioned between the second meshing gear and the second disc spring.

[0024] The second limiting spring is disposed adjacent to the second disc spring.

[0025] Finally, this utility model provides another type of automobile, which includes the aforementioned folding rearview mirror.

[0026] Compared with the prior art, the beneficial effects of this utility model are: the folding rearview mirror provided by this utility model can adjust the working state of the rearview mirror by applying external pressure when the power is off, and the adjustment position can be determined for the day. The structure of this utility model is relatively simple and easy to install. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 An exploded view of a folding rearview mirror provided by this utility model;

[0029] Figure 2 A cross-sectional view of a folding rearview mirror provided by this utility model;

[0030] Figure 3 A three-dimensional schematic diagram of a folding rearview mirror provided by this utility model;

[0031] Figure 4 A partial structural schematic diagram of a folding rearview mirror provided by this utility model;

[0032] Figure 5 An exploded view of a folding rearview mirror provided by this utility model;

[0033] Figure 6 A cross-sectional view of a folding rearview mirror provided by this utility model;

[0034] Figure 7 A partial structural schematic diagram of a folding rearview mirror provided by this utility model; Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] Example 1

[0037] like Figure 1As shown in Figure 3, a folding rearview mirror is schematically mounted on a rearview mirror carrier, which may be a rearview mirror base, and the rearview mirror base is fixedly mounted on a car.

[0038] A folding rearview mirror includes a rearview mirror housing, wherein the mirror further includes:

[0039] A first positioning post 10 is installed at a first predetermined position on the rearview mirror carrier. Indicatively, the first predetermined position may be the end of the rearview mirror carrier away from the vehicle direction. Further, the first positioning post 10 includes a first positioning post 111 and a first auxiliary positioning post 112 coaxial with the first positioning post 111. Indicatively, the first auxiliary positioning post 112 has at least two triangular edges inside, which limit and fix the first positioning post 111 so that the first positioning post 111 and the first auxiliary positioning post 112 are coaxial.

[0040] Furthermore, the bottom of the first positioning post 10 is provided with a positioning through hole (not marked in the figure) for fixing and connecting the rearview mirror carrier. For example, a screw is fixedly connected to the rearview mirror carrier through the positioning through hole so that the first positioning post 111 is fixedly connected to the rearview mirror carrier.

[0041] The first transmission helical gear 20 is fitted onto the first positioning column 10, and the first transmission helical gear 20 is provided with a first stepped inclined surface 201.

[0042] The first meshing gear 21 is fixedly mounted on the first positioning column 10 and is arranged adjacent to the first transmission helical gear 21.

[0043] Furthermore, such as Figure 4 As shown, the first meshing gear 21 is provided with a first stepped positioning protrusion 211 at the end near the first transmission helical gear 20. The first stepped positioning protrusion 211 matches the first stepped inclined surface 201 to achieve mutual positioning between the first meshing gear and the first transmission helical gear.

[0044] Further, schematically, the first auxiliary positioning post 112 is provided with a first type of protrusion 113, and the inner side of the first meshing gear is provided with a second type of protrusion 212 that matches the first type of protrusion 113. The second type of protrusion 212 of the first meshing gear 21 is engaged with the first type of protrusion 113 of the first auxiliary positioning post 112. When the first type of protrusion 113 and the second type of protrusion 212 are engaged, the first meshing gear 21 and the first auxiliary positioning post 112 are mutually limited, that is, there is no relative rotation between the first auxiliary positioning post 112 and the first meshing gear 21.

[0045] In practical application, a worm gear matching the first transmission helical gear is fixedly installed inside the rearview mirror housing. The worm gear rotates under the action of a drive motor and moves along the first transmission helical gear (the first transmission helical gear is in a fixed state) to drive the rearview mirror housing (i.e. the folding rearview mirror) to rotate axially around the first positioning column axis, thereby realizing the purpose of extending or retracting the rearview mirror.

[0046] The specific working principle is as follows: When the drive motor is working, the worm gear rotates, driving the entire rearview mirror to rotate and extend or retract. When the drive motor is not powered, an external force is applied to the rearview mirror (e.g., an operator applies a pushing force to the rearview mirror housing). This external force drives the first transmission helical gear to rotate. During the rotation of the first transmission helical gear, the first meshing gear remains fixed, and relative motion occurs between the first transmission helical gear and the first meshing gear. By recording the relative motion between the first transmission helical gear and the first meshing gear, the position of the rearview mirror rotation can be determined.

[0047] As a further preferred embodiment, the aforementioned folding rearview mirror further includes:

[0048] The first disc spring 23 is fitted onto the first positioning post 10 and is disposed adjacent to the first meshing gear 21. The first disc spring 23 is designed to apply pressure to the first meshing gear 21 so that the movable mutual movement between the first meshing gear 21 and the first transmission helical gear 20 is minimized. It can also be understood that the first disc spring 23 performs a pressing treatment on the first meshing gear 21 and the first transmission helical gear 20.

[0049] The first support bushing 24 is fitted onto the first positioning column 10 and positioned between the first meshing gear 21 and the first disc spring 23. Schematically, the first support bushing 24 is fitted onto the end of the first auxiliary positioning column 113 to position and install the first auxiliary positioning column 113, while providing a support point for the operation of the first disc spring 24, ensuring that the first disc spring 23 applies stable pressure to the first meshing gear 21.

[0050] The first limiting snap ring 25 is disposed adjacent to the first disc spring 24 to limit the movement of the first disc spring 23 and the first meshing gear 21. Schematic, the first disc spring 23 is sequentially mounted on the first positioning post 111 via the first limiting snap ring 25.

[0051] Here's a detailed explanation of the working principle: When the drive mechanism is not powered, an external force is applied to the rearview mirror. This force drives the first transmission helical gear to move. During the movement of the first transmission helical gear, the interaction between the first stepped positioning protrusion and the first stepped inclined surface causes the first meshing gear to exert a thrust on the first disc spring. This thrust causes the first meshing gear to rise along the first stepped inclined surface that meshes with the first transmission helical gear. Due to the limiting effect of the first and second type of protrusions, the first auxiliary positioning post limits the movement of the first meshing gear, ensuring that during the rotation of the first transmission helical gear, the first meshing gear can only rise along the axis until the first meshing gear meshes with the first transmission helical gear. The trapezoidal surface separates, meaning the first transmission helical gear and the first meshing gear are separated. A force is then applied to the first transmission helical gear to keep it rotating. Before the first trapezoidal inclined surface re-engages with the first stepped positioning protrusion, due to the unlimited range between the first transmission helical gear and the first meshing gear, and the engagement of the first meshing gear with the first auxiliary positioning post, relative rotation occurs between them. This allows the rearview mirror to rotate along the positioning post. Once the rearview mirror is in position, the first trapezoidal inclined surface and the first stepped positioning protrusion re-engage under the pressure of the first disc spring. The manual rotation amount of the rearview mirror is recorded by measuring the rotation angle of the signal gear engaged with the first meshing gear.

[0052] Example 2

[0053] As a further preferred implementation scheme, based on the technical solution of Embodiment 1,

[0054] like Figure 5-6 As shown, a folding rearview mirror includes a rearview mirror housing, wherein the mirror further includes:

[0055] A second positioning post 30 is installed at a first predetermined position on the rearview mirror carrier. Indicatively, the first predetermined position may be the end of the rearview mirror carrier away from the vehicle direction. Further, the second positioning post 30 includes a second positioning post 310 and a second auxiliary positioning post 320 coaxial with the second positioning post 310. Indicatively, the second auxiliary positioning post 320 has at least two positioning grooves inside, and the second positioning post 310 has a positioning protrusion 311 matching the positioning grooves. The positioning protrusion 310 is aligned with the positioning grooves so that the second positioning post 310 and the second auxiliary positioning post 320 are coaxial.

[0056] The second transmission helical gear 40 is fixedly mounted on the rearview mirror housing and fitted onto the second positioning column 30. The second transmission helical gear 40 is provided with an L-shaped platform 401.

[0057] The second meshing gear 41 is fixedly mounted on the second positioning column 30 and is disposed adjacent to the second transmission helical gear. Further, as... Figure 7 As shown, the second auxiliary positioning post 320 is provided with a third type of protrusion 312, and the inner side of the second meshing gear is provided with a fourth type of protrusion 412 that matches the third type of protrusion 312. The fourth type of protrusion 412 of the second meshing gear 41 meshes with the third type of protrusion 312 of the second auxiliary positioning post. When the third type of protrusion 312 and the fourth type of protrusion 412 are meshed, the second meshing gear 41 and the second auxiliary positioning post 320 are mutually limited.

[0058] As a further preferred embodiment, the aforementioned folding rearview mirror further includes a friction plate 42, which is disposed between the second meshing gear 40 and the second transmission helical gear 41. That is, the L-shaped platform 401 is used to accommodate the friction plate 42. The friction plate 42 generates a frictional force by bearing the pressure applied to it. This frictional force increases the friction between the second transmission helical gear 40 and the second meshing gear 41, so that the second transmission helical gear and the second meshing gear remain relatively stationary under normal operating conditions.

[0059] As a further preferred embodiment, the aforementioned folding rearview mirror further includes:

[0060] The second disc spring 43 is fitted onto the second positioning post 30 and disposed adjacent to the second meshing gear 41; the second disc spring 43 is designed to apply pressure to the second meshing gear 41 so as to minimize the movable mutual movement between the second meshing gear 41 and the second transmission helical gear 40.

[0061] The second support bushing 44 is fitted onto the first positioning column 30 and positioned between the second meshing gear 41 and the second disc spring 43. Schematically, the second support bushing 44 is fitted onto the end of the second auxiliary positioning column 320 to position and install the second auxiliary positioning column, while providing a support point for the operation of the second disc spring 44, ensuring that the second disc spring 43 applies stable pressure to the second meshing gear 41.

[0062] The second limiting snap ring 45 is disposed adjacent to the second disc spring 44 and is used to limit the movement of the second disc spring 43 and the second meshing gear 41. Schematic, the second disc spring 43 and the second limiting snap ring 45 are sequentially mounted on the second positioning post.

[0063] The working principle of the aforementioned folding rearview mirror is as follows: When the drive motor is working, the worm gear rotates, driving the entire rearview mirror to rotate and extend or retract. When the drive motor is not powered, an external force is applied to the rearview mirror to cause the second transmission helical gear to rotate axially along the second positioning post. Because the inner side of the second disc spring 43 is engaged with the second positioning post, the second disc spring 43 continuously applies pressure to the second meshing gear 41. This pressure is transmitted to the friction plate 42, which increases friction under the pressure applied by the second meshing gear 41. During the rotation of the second transmission helical gear, the friction force generated by the friction plate drives the second meshing gear 41 to generate a rotational driving force that rotates along the axial direction of the second positioning post. Due to the limiting effect of the third or fourth type of protrusion, the rotational driving force is transmitted to the second auxiliary positioning post. Since the positioning groove on the second auxiliary positioning post cooperates with the positioning protrusion of the second positioning post body, the rotational driving force drives the second auxiliary positioning post to move axially along the direction of the positioning protrusion. This axial movement causes the second support bushing 44 in the second auxiliary positioning post to move upwards against the resistance of the second disc spring, and causes the second disc spring to displace in the vertical direction away from the rearview mirror base. At this time, the second disc spring no longer applies pressure to the second meshing gear, the force on the friction plate is greatly reduced, and the second meshing gear and the second transmission helical gear are no longer completely stationary; that is, the second meshing gear and the second transmission helical gear are relatively "unlocked." After the second transmission helical gear and the second meshing gear are "unlocked," the second transmission helical gear continues to rotate under the action of external force. Due to the mutual limiting between the first and second type of protrusions, the second transmission helical gear rotates while the second meshing gear does not rotate, achieving relative rotation between the two. After the force driving the second transmission helical gear disappears, the second disc spring applies pressure to the second support bushing and the second auxiliary positioning post to reset them, and then applies pressure to the second meshing gear again. The friction plate between the second meshing gear and the second transmission helical gear generates frictional resistance again, completing the locking operation between the two gears. That is, the rearview mirror body can rotate without power.

[0064] Example 3

[0065] This utility model provides another automobile, which includes the technical solution described in Embodiment 1 or Embodiment 2 above. The automobile has the aforementioned beneficial effects, and its working principle will not be elaborated here.

[0066] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A folding rearview mirror, comprising a rearview mirror housing, characterized in that, Also includes: The first positioning post; the first positioning post is installed at a first predetermined position on the rearview mirror carrier; A first transmission helical gear is fitted onto the first positioning column, and a first stepped inclined surface is provided on the first transmission helical gear. The first meshing gear is fixedly mounted on the first positioning column and is arranged adjacent to the first transmission helical gear.

2. A folding rearview mirror according to claim 1, characterized in that, The first meshing gear has a first stepped positioning protrusion at its end near the first transmission helical gear, and the first stepped positioning protrusion meshes with the first stepped inclined surface.

3. A folding rearview mirror according to claim 2, characterized in that, The first positioning post includes a first positioning post and a first auxiliary positioning post coaxial with the first positioning post. The first auxiliary positioning post is provided with a first type of protrusion. The inner side of the first meshing gear is provided with a second type of protrusion that matches the first type of protrusion. The second type of protrusion of the first meshing gear is engaged with the first type of protrusion of the first auxiliary positioning post.

4. A folding rearview mirror according to claim 1, characterized in that, Also includes: The first disc spring is fitted onto the first positioning post and is disposed adjacent to the first meshing gear; The first support bushing is fitted onto the first positioning column and positioned between the first meshing gear and the first disc spring.

5. The folding rearview mirror according to claim 4, characterized in that, Also includes: The first limiting snap ring is disposed adjacent to the first disc spring and is used to limit the first disc spring and the first meshing gear.

6. A folding rearview mirror, comprising a rearview mirror housing, characterized in that, Also includes: The second positioning post is installed at a first predetermined position on the rearview mirror carrier. The second transmission helical gear is fixedly mounted on the rearview mirror housing and fitted onto the second positioning column. The second transmission helical gear is provided with an L-shaped platform. The second meshing gear is fixedly mounted on the second positioning column and is arranged adjacent to the second transmission helical gear.

7. A folding rearview mirror according to claim 6, characterized in that, The second positioning post includes a second positioning post and a second auxiliary positioning post coaxial with the second positioning post. The second positioning post is provided with a positioning protrusion that matches the positioning groove. When the positioning protrusion matches the positioning groove, the second positioning post and the second auxiliary positioning post are in a coaxial state.

8. A folding rearview mirror according to claim 6, characterized in that, It also includes a friction plate, which is disposed between the second meshing gear and the second transmission helical gear to match the L-shaped platform.

9. A folding rearview mirror according to claim 6, characterized in that, Also includes; The second disc spring is fitted onto the second positioning post and is disposed adjacent to the second meshing gear; The second support bushing is fitted onto a first positioning post and positioned between the second meshing gear and the second disc spring. The second limiting spring is disposed adjacent to the second disc spring.

10. A car, characterized in that, Includes a folding rearview mirror as described in claim 1 or 6.

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