Electric folding device for automobile outside rear-view mirror

Abstract

The utility model discloses an electric folding device for an outside rear-view mirror of an automobile, which comprises a shell used for being connected with a mirror substrate; the base is fixedly connected with the shell, and a base cam assembly is arranged on the lower end face of the base; the base is fixed to the mirror support, a base cam assembly is arranged at the upper end of the base, and in the initial state, the base cam assembly and the base cam assembly are in an embedded state; in the electric folding state, the base cam assembly and the base cam assembly move relatively, and in the relative movement, the base has the upward lifting process and the downward lowering process relative to the base. A check ring is arranged on the outer side of the cam assembly of the base in a surrounding mode, the check ring is embedded into the base, and in the relative movement process, the check ring is always in the position state of being embedded into the base, and foreign matter can be prevented from entering the cam assembly. The utility model relates to the technical field of automobile parts.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to an electric folding device for automotive exterior rearview mirrors. Background Technology

[0002] With the development of the automotive industry, the function and structure of automotive exterior rearview mirrors are constantly being optimized. Electric folding exterior rearview mirrors, as a feature that improves vehicle convenience and safety, are receiving increasing market attention. However, some existing electric folding devices have certain structural design problems. For example, the fit between components is not tight enough during the folding process, making them susceptible to external environmental factors such as sand and dust, which reduces the reliability of the folding and unfolding actions, affecting the device's lifespan and stability. Utility Model Content

[0003] To address the shortcomings and defects of existing technologies, an electric folding device is provided that can prevent sand and dust from entering the cam assembly, thereby improving the reliability and durability of electric folding of automotive exterior rearview mirrors and showing broad application prospects.

[0004] An electrically folding device for automotive exterior rearview mirrors, comprising:

[0005] The housing is used to connect to the mirror base plate;

[0006] A base, which is fixedly connected to the housing, and a base cam assembly is provided on the lower end face of the base;

[0007] The base is fixed to the mirror bracket, and a base cam assembly is provided at the upper end of the base.

[0008] In the initial state, the base cam assembly and the base cam assembly are in an engaged state;

[0009] In the electrically folded state, the base cam assembly and the base cam assembly rotate relative to each other. During the relative motion, the base has an upward lifting process and a downward lowering process relative to the base.

[0010] The base has a retaining ring surrounding the outer side of the base cam assembly. The retaining ring is embedded in the base and remains in the position of being fitted into the base during relative movement.

[0011] With the above structure, the electric folding device for automotive exterior rearview mirrors of this utility model has the following advantages compared with the prior art:

[0012] In this application, by setting a retaining ring on the base, the retaining ring is fitted with the base and remains in a fitted state during the movement. The retaining ring plays a blocking role on the outside of the cam assembly, which can effectively prevent foreign objects such as sand and dust from entering the cam assembly, improve the reliability and durability of the device, and ensure the smooth operation of folding and unfolding.

[0013] Of course, the retaining ring can also be set on the base and fitted with the base, which can achieve the same effect as the above structure.

[0014] As an improvement of this utility model, the retaining ring is disposed on the upper end surface of the base and has an upward extending structure;

[0015] The lower end face of the base is provided with a first mating groove for the retaining ring to be inserted.

[0016] As an improvement of this utility model, the base is provided with a convex ring on the outside of the base cam assembly. The convex ring has a downward extending structure and is spaced apart from the base cam assembly, forming the first mating groove between them.

[0017] As an improvement of this utility model, the base cam assembly includes a plurality of annularly spaced protrusions, adjacent protrusions are connected by a connecting part on their outer sides, and the vertical height of the connecting part is the same as the vertical height of the protrusion.

[0018] As an improvement of this utility model, the retaining ring and the base cam assembly are spaced apart, and a second mating groove is formed between them for the connecting part to be inserted.

[0019] As an improvement of this utility model, the retaining ring and the base are integrally formed. Attached Figure Description

[0020] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0021] Figure 2 This is the utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0022] Figure 3 This is a structural schematic diagram of the base and the bottom of this utility model.

[0023] Figure 4 This is the utility model Figure 3 A schematic diagram of the structure of the components in an explosive state.

[0024] Figure 5 This is a schematic diagram of the base bottom structure of this utility model.

[0025] Figure 6 This is a schematic diagram of the upper structure of the base of this utility model.

[0026] The figure shows: 1. Housing; 2. Base; 2.1 Base cam assembly; 2.11 Protrusion; 2.2 Protruding ring; 3. Base; 3.1 Base cam assembly; 4. Retaining ring; 5. First mating groove; 6. Connecting part; 7. Second mating groove. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] Please see Figure 1-6 As shown,

[0029] An electrically folding device for automotive exterior rearview mirrors, comprising:

[0030] Housing 1, used for connecting to the mirror base plate;

[0031] The base 2 is fixedly connected to the housing 1, and the lower end face of the base 2 is provided with a base cam assembly 2.1;

[0032] Base 3 is fixed to the mirror bracket, and a base cam assembly 3.1 is provided at the upper end of base 3.

[0033] In the initial state, the base cam assembly 2.1 and the base cam assembly 3.1 are in a mating state;

[0034] In the electrically folded state, the base cam assembly 2.1 and the base cam assembly 3.1 rotate relative to each other. During the relative rotation, the base 2 moves upward relative to the base 3 and moves downward.

[0035] The base 3 is surrounded by a retaining ring 4 on the outside of the cam assembly. The retaining ring 4 is embedded in the base 2, and during relative movement, the retaining ring 4 is always in the position of being fitted into the base 2.

[0036] For the cam assembly, electric drive assembly, and movement method in this application, please refer to paragraphs 0053 to 0057 of the specification of an electric folding device for an automotive exterior rearview mirror disclosed in CN112092733B. This application is based on that and makes a new design.

[0037] In this application, by setting a retaining ring 4 on the base 3, the retaining ring 4 is fitted with the base 2 and remains in the fitted state during the movement. The retaining ring 4 plays a blocking role on the outside of the cam assembly, which can effectively prevent foreign objects such as sand and dust from entering the cam assembly, improve the reliability and durability of the device, and ensure the smooth operation of folding and unfolding.

[0038] Of course, the retaining ring 4 can also be set on the base 2 and fitted with the base 3, which can also achieve the same effect as the above structure.

[0039] Please see Figure 2 , Figure 4 , Figure 6 As shown, the retaining ring 4 is located on the upper surface of the base 3 and has an upward extending structure;

[0040] The lower end face of the base 2 is provided with a first mating groove 5 for the retaining ring 4 to be inserted.

[0041] After the above improvements, a simpler structural design is adopted to form a fitted structure, which has the characteristics of simple manufacturing, low cost and high reliability;

[0042] Preferably, the sidewall of the retaining ring 4 is positioned close to the sidewall of the first mating groove 5, and the top of the retaining ring 4 is positioned close to the bottom of the first mating groove 5, so as to reduce the gap and further improve the blocking effect.

[0043] Please see Figure 5 As shown, the base 2 has a protruding ring 2.2 around the outside of the base cam assembly 2.1. The protruding ring 2.2 has a downward extending structure and is spaced apart from the base cam assembly 2.1, forming a first mating groove 5 between them.

[0044] After the above improvements, the structural design of the first mating groove 5 is simple and easy to process.

[0045] Please see Figure 2 , Figure 5 As shown, the base cam assembly 2.1 includes a plurality of annularly spaced protrusions 2.11, and the outer sides of adjacent protrusions 2.11 are connected by a connecting part 6, and the vertical height of the connecting part 6 is the same as the vertical height of the protrusions 2.11.

[0046] The connecting part 6 surrounds the outside of the protrusion 2.11 and acts as a barrier between the protrusions 2.11 and in the radial direction, further preventing foreign objects such as sand and dust from entering.

[0047] Please see Figure 2 , Figure 6 As shown, the retaining ring 4 is spaced apart from the base cam assembly 3.1, and a second mating groove 7 is formed between them for the connecting part 6 to be inserted.

[0048] The connecting part 6 is embedded into the second mating groove 7, and during the relative movement of the base 2 and the base 3, the connecting part 6 always maintains the position of being engaged with the second mating groove 7, which can also play a blocking role to prevent foreign objects such as sand and dust from entering the cam assembly.

[0049] After the above improvements, the outer side of the cam assembly is provided with two spaced structures that simultaneously serve as barriers (the barrier structure formed by the retaining ring 4 and the first mating groove 5, and the barrier structure formed by the connecting part 6 and the second mating groove 7). The two structures simultaneously serve as barriers, thereby improving the performance of preventing foreign objects from entering.

[0050] In addition, the cross-sections of the two barrier structures form a wave-like structure, which can significantly improve the performance of preventing foreign objects from entering.

[0051] Please see Figure 2 , Figure 6 As shown, the retaining ring 4 and the base 3 are integrally formed, and the protruding ring 2.2 and the connecting part 6 are integrally formed with the base 2.

[0052] The above improvements enhanced the overall integrity and structural strength of the device, while reducing costs and manufacturing complexity.

[0053] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. An electrically folding device for an automotive exterior rearview mirror, comprising: The housing (1) is connected to the mirror substrate; The base (2) is fixedly connected to the housing (1), and its lower end face is provided with a base cam assembly (2.1). The base (3) is fixed on the mirror bracket, and its upper end is provided with a base cam assembly (3.1); in the initial state, the base cam assembly (2.1) and the base cam assembly (3.1) are in a fitted state; In the electric folding state, the base cam assembly (2.1) and the base cam assembly (3.1) rotate relative to each other, and the base (2) has an upward lifting process and a downward lowering process relative to the base (3); Its features are: The base (3) is surrounded by a retaining ring (4) on the outside of the base cam assembly (3.1). The retaining ring (4) is embedded in the base (2) and is always in the position of being fitted into the base (2) during relative movement.

2. The electrically folding device for an automotive exterior rearview mirror according to claim 1, characterized in that: The retaining ring (4) is located on the upper surface of the base (3) and has an upward extending structure; The lower end face of the base (2) is provided with a first mating groove (5) for the retaining ring (4) to be inserted.

3. The electrically folding device for an automotive exterior rearview mirror according to claim 2, characterized in that: The base (2) has a protruding ring (2.2) around the outside of the base cam assembly (2.1). The protruding ring (2.2) has a downward extending structure and is spaced apart from the base cam assembly (2.1), forming the first mating groove (5) between them.

4. The electrically folding device for an automotive exterior rearview mirror according to claim 3, characterized in that: The base cam assembly (2.1) includes a plurality of annularly spaced protrusions (2.11), with adjacent protrusions (2.11) connected by a connecting part (6) on their outer sides, and the vertical height of the connecting part (6) is consistent with the vertical height of the protrusions (2.11).

5. The electrically folding device for an automotive exterior rearview mirror according to claim 4, characterized in that: The retaining ring (4) is spaced apart from the base cam assembly (3.1), and a second mating groove (7) is formed between them for the connecting part (6) to be inserted.

6. The electrically folding device for an automotive exterior rearview mirror according to claim 1, characterized in that: The retaining ring (4) and the base (3) are integrally formed.

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