Mounting chassis structure of electric folder

Abstract

The utility model relates to the technical field of electric folders, and particularly discloses an electric folder mounting chassis structure which comprises an annular body, a clamping structure and a limiting structure are arranged on one side of the annular body, and the clamping structure is used for being connected with a gear in a clamping mode; the limiting structure is used for limiting the limiting column of the connecting body so as to limit the rotating angle of the mounting chassis; a protection structure is arranged on the other side of the annular body and comprises a limiting boss, and the limiting boss is fixedly connected to the end, away from the limiting structure, of the annular body; the limiting bosses are distributed in the circumferential direction of the annular body at intervals, a limiting groove is formed between every two adjacent limiting bosses, and the limiting grooves are embedded into external protruding blocks. The overall structure is simple, manufacturing is convenient, meanwhile, the reliability of the installation chassis is improved, and the service life is prolonged.

Description

Technical Field

[0001] This application relates to the technical field of electric folding devices, and in particular to a mounting chassis structure for an electric folding device. Background Technology

[0002] Electric folding devices are widely used in car rearview mirrors. Their main function is to use a motor to drive the mechanical structure such as gears and rotating bodies to unfold and fold the rearview mirror.

[0003] In related technologies, the mounting chassis is a key structure for connecting the internal and external devices of the electric folding device. During installation, the mounting chassis engages with the external protrusions and is axially pressed by a compression spring. Inside the electric folding device, the mounting chassis is engaged with a gear and is limited by a limiting post of the connecting body to restrict the rotation angle of the mounting chassis. The mounting chassis includes a ring-shaped body with a locking block on it. The apex of the locking block has a chamfer, each chamfer including two inclined surfaces with different inclination angles. The chamfer engages with the gear to ensure the stability of the connection between the mounting chassis and the gear and the accuracy of the transmission.

[0004] However, while the aforementioned design, which includes two beveled surfaces with different tilt angles, improves the reliability of the connection to some extent, its complex structure makes it difficult to manufacture the mold for mounting the chassis, and it is prone to breakage. Utility Model Content

[0005] In order to provide a simple and easy-to-manufacture mounting chassis, this application provides an electric folding device mounting chassis structure.

[0006] This application provides an electric folding device mounting chassis structure, which adopts the following technical solution:

[0007] An electric folding device mounting chassis structure includes an annular body. One side of the annular body has a snap-fit ​​structure and a limiting structure. The snap-fit ​​structure is used for engaging with a gear, and the limiting structure is used to limit the rotation angle of the mounting chassis by engaging with a limiting post of a connecting body. The other side of the annular body has a protective structure, which includes a limiting boss. The limiting boss is fixedly connected to the end of the annular body away from the limiting structure. Multiple limiting bosses are provided, spaced apart circumferentially along the annular body. A limiting groove is formed between adjacent limiting bosses, and the limiting groove engages with an external protrusion.

[0008] By adopting the above technical solution, one end of the mounting chassis is engaged with the gear inside the electric folding device to achieve a stable connection between the mounting chassis and the electric folding device; the limiting structure is limited by the limiting post of the connecting body, thereby limiting the rotation angle of the mounting chassis; the other end of the mounting chassis is engaged with the external protrusion and axially pressed by a compression spring. Multiple limiting protrusions and limiting grooves provide multiple angular position restrictions. When subjected to abnormal forces, the protective structure effectively protects the mounting chassis, reduces the risk of damage to the mounting chassis, and extends the service life of the mounting chassis; the overall structure of the mounting chassis is simple and easy to manufacture and maintain.

[0009] Optionally, six limiting bosses are provided, and the six limiting bosses are circumferentially spaced to form six limiting grooves.

[0010] By adopting the above technical solution, the setting of six limiting bosses and six limiting grooves can more accurately limit the rotation range of the mounting chassis, while increasing the structural strength of the mounting chassis and helping to extend the service life of the mounting chassis.

[0011] Optionally, the snap-fit ​​structure includes:

[0012] A snap-fit ​​protrusion is fixedly connected to the annular body, and the diameter of the snap-fit ​​protrusion is smaller than the diameter of the annular body.

[0013] The first snap-fit ​​block is fixedly connected to the end of the snap-fit ​​protrusion away from the annular body, and the first snap-fit ​​block is used for snap-fit ​​connection with the gear.

[0014] By adopting the above technical solution, the gear is engaged with the mounting chassis through the first engaging block, achieving precise positioning and stable connection between the gear and the mounting chassis during installation, thus ensuring the accuracy and stability of the transmission.

[0015] Optionally, the first snap-fit ​​block has a chamfer.

[0016] By adopting the above technical solution, the chamfer setting is simpler than the design structure of two inclined surfaces with different tilt angles, which simplifies the mold making process and improves the fit between the first locking block and the gear, making the gear transmission more precise.

[0017] Optionally, there are multiple first snap-fit ​​blocks, which are evenly spaced along the circumference of the annular body.

[0018] By adopting the above technical solution, multiple evenly distributed first locking blocks improve the uniformity and stability of the connection between the gear and the mounting chassis, making the connection between the two more secure and ensuring that there will be no deviation or loosening during transmission.

[0019] Optionally, the snap-fit ​​protrusion is fixed with reinforcing ribs on its periphery, and the number and position of the reinforcing ribs correspond one-to-one with those of the first snap-fit ​​blocks.

[0020] By adopting the above technical solutions, the reinforcing ribs help to increase the overall rigidity and strength of the mounting chassis and improve its resistance to deformation.

[0021] Optionally, one end of the reinforcing rib that is recessed towards the snap-fit ​​ring forms a weight-reducing groove.

[0022] By adopting the above technical solution, the weight reduction groove can reduce weight and lower production costs while ensuring the structural strength of the mounting chassis.

[0023] Optionally, the limiting structure includes limiting blocks, and multiple limiting blocks are provided, which are evenly spaced along the circumference of the annular body; a limiting groove is formed between two adjacent limiting blocks, and the limiting groove is used to limit the position when the mounting chassis rotates circumferentially.

[0024] By adopting the above technical solution, the limiting post of the connecting body and the limiting groove of the mounting chassis cooperate with each other, thereby limiting the position of the mounting chassis when rotating circumferentially and avoiding damage to gears and other structures caused by excessive rotation of the mounting chassis.

[0025] Optionally, one end of the limiting block is configured as a guide slope, which is inclined towards the bottom of the limiting groove along the direction of the limiting block toward the bottom of the limiting groove; the other end of the limiting block is configured as a limiting surface, which is perpendicular to the bottom surface of the limiting groove.

[0026] By adopting the above technical solution, when the mounting chassis rotates counterclockwise, the guide slope allows the limiting post to slide smoothly out of the limiting groove, reducing wear; when the mounting chassis rotates clockwise, the limiting surface ensures that the limiting post of the connecting body stops rotating after reaching the predetermined position, thereby limiting the direction and position of the circumferential rotation of the mounting chassis and preventing the mounting chassis from exceeding the predetermined range during rotation.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. One end of the mounting chassis is engaged with the gear inside the electric folding mechanism to achieve a stable connection between the mounting chassis and the electric folding mechanism; the limiting structure is matched with the limiting post of the connecting body to limit the rotation angle of the mounting chassis; the other end of the mounting chassis is engaged with the external protrusion and axially pressed by a compression spring. When subjected to abnormal forces, the protective structure effectively protects the mounting chassis and reduces the risk of damage to the mounting chassis; the overall structure of the mounting chassis is simple, easy to manufacture and maintain.

[0029] 2. By setting a chamfer on the first snap-fit ​​block, the design structure is simpler than that of two inclined surfaces with different inclination angles, which simplifies the mold making process and improves the fit between the first snap-fit ​​block and the gear, making the gear transmission more precise.

[0030] 3. By setting reinforcing ribs and weight-reducing grooves, the overall rigidity and strength of the mounting chassis are increased, the deformation resistance of the mounting chassis is improved, and the weight is reduced, thus reducing production costs. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the protruding graphics card connection structure and the limiting structure in the embodiments of this application;

[0032] Figure 2 yes Figure 1 Enlarged view of region A in the middle;

[0033] Figure 3 This is a schematic diagram of the overall structure of the protective structure highlighted in the embodiments of this application.

[0034] Reference numerals in the attached drawings: 1. Annular body; 2. Snap-fit ​​structure; 21. Snap-fit ​​protrusion; 22. First snap-fit ​​block; 221. Chamfer; 23. Reinforcing rib; 231. Weight reduction groove; 3. Limiting structure; 31. Limiting block; 32. Limiting groove; 33. Guide slope; 34. Limiting surface; 4. Protective structure; 41. Limiting boss; 42. Limiting groove. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0036] This application discloses an electric folding device mounting chassis structure, referring to... Figure 1 and Figure 2 The device includes an annular body 1. One side of the annular body 1 is provided with a snap-fit ​​structure 2 and a limiting structure 3. The snap-fit ​​structure 2 is used to snap-fit ​​with the gear, and the limiting structure 3 is used to limit the rotation angle of the mounting chassis within a certain range with the limiting post of the connecting body. The other side of the annular body 1 is provided with a protective structure 4, which is used to reduce the risk of damage to the mounting chassis when subjected to abnormal forces.

[0037] The snap-fit ​​structure 2 includes a snap-fit ​​protrusion 21 and a first snap-fit ​​block 22. The snap-fit ​​protrusion 21 is integrally formed on the annular body 1. The diameter of the snap-fit ​​protrusion 21 is smaller than the diameter of the annular body 1, and the inner edge of the snap-fit ​​protrusion 21 is flush with the inner edge of the annular body 1.

[0038] The first snap-fit ​​block 22 is integrally formed on the end of the snap-fit ​​protrusion 21 away from the annular body 1. The first snap-fit ​​block 22 is approximately cuboid. The gear snaps into and abuts against the end face of the snap-fit ​​protrusion 21. There are five first snap-fit ​​blocks 22, which are evenly spaced along the circumference of the snap-fit ​​protrusion 21. Both sides of the first snap-fit ​​block 22 are provided with chamfers 221 to ensure the stability of the connection between the mounting base and the gear and the accuracy of the transmission. Moreover, the chamfer 221 is simpler than the design structure of two inclined surfaces with different inclination angles, which simplifies the mold making process, reduces stress concentration, and facilitates the assembly of the gear and the mounting base.

[0039] A reinforcing rib 23 is integrally formed on the periphery of the snap-fit ​​protrusion 21 corresponding to the position of the first snap-fit ​​block 22, and the reinforcing rib 23 is fixedly connected to the annular body 1. The number and position of the reinforcing rib 23 correspond one-to-one with those of the first snap-fit ​​block 22. The middle part of the reinforcing rib 23 is recessed towards one end of the snap-fit ​​protrusion 21 to form a weight-reducing groove 231. The reinforcing rib 23 helps to increase the overall rigidity and strength of the mounting chassis and improve the deformation resistance of the mounting chassis, while the weight-reducing groove 231 can reduce weight and lower production costs while ensuring structural strength.

[0040] The limiting structure 3 includes three limiting blocks 31, which are evenly spaced along the circumference of the annular body 1; a limiting groove 32 is formed between two adjacent limiting blocks 31. One end of the limiting block 31 is a guide slope 33, which is inclined towards the bottom of the limiting groove 32 along the direction of the limiting block 31; the other end of the limiting block 31 is a limiting surface 34, which is perpendicular to the bottom surface of the limiting groove 32.

[0041] When the mounting chassis rotates counterclockwise, the limiting post of the connecting body moves along the guide slope 33, allowing the limiting post to slide smoothly out of the limiting groove 32; when the mounting chassis rotates clockwise, the limiting post of the connecting body moves in the limiting groove 32 to abut against the limiting surface 34, preventing the mounting chassis from continuing to rotate, thereby restricting the direction of circumferential rotation of the mounting chassis.

[0042] Reference Figure 3 The protective structure 4 includes a limiting boss 41, which is an arc-shaped block. The limiting boss 41 is integrally formed on the end of the annular body 1 away from the limiting structure 3. The protective structure 4 is embedded with the external protrusion and is axially pressed by a compression spring. In this embodiment, there are six limiting bosses 41, which are evenly spaced along the circumference of the annular body 1. A limiting groove 42 is formed between two adjacent limiting bosses 41. Both walls of the limiting groove 42 are inclined surfaces, which gradually tighten towards the central axis of the limiting block 31 from the bottom to the opening of the groove.

[0043] When the motor in the electric folding mechanism is stationary, the protective structure 4 can protect the mounting chassis and prevent it from rotating when subjected to vibration, impact or other unexpected forces; the six limiting bosses 41 and the six limiting grooves 42 provide multiple angular position restrictions, which further helps to protect the mounting chassis from damage.

[0044] The implementation principle of the electric folding device mounting chassis structure disclosed in this application is as follows: One side of the annular body 1 is provided with a snap-fit ​​structure 2 and a limiting structure 3, and the other side of the annular body 1 is provided with a protective structure 4. The mounting chassis is connected to the gears inside the electric folding device via the snap-fit ​​structure 2. When the electric folding device is working, the limiting post of the internal connecting body of the electric folding device is limited by the limiting block 31 of the limiting structure 3, limiting the rotation angle of the mounting chassis within a certain range. When the electric folding device is not working, the limiting boss 41 and limiting groove 42 in the protective structure 4 provide multiple angular position restrictions, reducing the risk of damage to the mounting chassis when subjected to abnormal forces. The overall structure of this application is simple, easy to manufacture, and improves the reliability of the mounting chassis, extending its service life.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A mounting chassis structure for an electric folding device, characterized in that, The device includes an annular body (1), one side of which is provided with a snap-fit ​​structure (2) and a limiting structure (3). The snap-fit ​​structure (2) is used to snap-fit ​​with a gear, and the limiting structure (3) is used to limit the rotation angle of the mounting chassis by limiting the limiting post of the connecting body. The other side of the annular body (1) is provided with a protective structure (4), which includes a limiting boss (41). The limiting boss (41) is fixedly connected to the end of the annular body (1) away from the limiting structure (3). Multiple limiting bosses (41) are provided, and the multiple limiting bosses (41) are distributed circumferentially along the annular body (1). A limiting groove (42) is formed between two adjacent limiting bosses (41), and the limiting groove (42) is fitted with an external protrusion.

2. The electric folding device mounting chassis structure according to claim 1, characterized in that, The limiting boss (41) is provided in six parts, and the six limiting bosses (41) are circumferentially spaced to form six limiting grooves (42).

3. The electric folding device mounting chassis structure according to claim 1, characterized in that, The snap-fit ​​structure (2) includes: A snap-fit ​​protrusion (21) is fixedly connected to the annular body (1), and the diameter of the snap-fit ​​protrusion (21) is smaller than the diameter of the annular body (1). The first snap-fit ​​block (22) is fixedly connected to the end of the snap-fit ​​protrusion (21) away from the annular body (1), and the first snap-fit ​​block (22) is used to snap-fit ​​with the gear.

4. The electric folding device mounting chassis structure according to claim 3, characterized in that, The first snap-fit ​​block (22) has a chamfer (221).

5. The electric folding device mounting chassis structure according to claim 3, characterized in that, The first snap-fit ​​block (22) is provided in multiple ways, and the multiple first snap-fit ​​blocks (22) are evenly spaced along the circumference of the annular body (1).

6. The electric folding device mounting chassis structure according to claim 5, characterized in that, The snap-fit ​​protrusion (21) is fixed with reinforcing ribs (23) on its periphery. The number and position of the reinforcing ribs (23) correspond one-to-one with those of the first snap-fit ​​block (22).

7. The electric folding device mounting chassis structure according to claim 6, characterized in that, The reinforcing rib (23) has a recessed end that forms a weight-reducing groove (231) towards the snap-fit ​​ring (21).

8. The electric folding device mounting chassis structure according to claim 1, characterized in that, The limiting structure (3) includes a limiting block (31), and multiple limiting blocks (31) are provided. The multiple limiting blocks (31) are evenly spaced along the circumference of the annular body (1). A limiting groove (32) is formed between two adjacent limiting blocks (31), and the limiting groove (32) is used to limit the position when the mounting chassis rotates circumferentially.

9. The electric folding device mounting chassis structure according to claim 8, characterized in that, One end of the limiting block (31) is set as a guide slope (33), and the guide slope (33) is inclined towards the bottom of the limiting groove (32) along the limiting block (31); the other end of the limiting block (31) is set as a limiting surface (34), and the limiting surface (34) is set perpendicular to the bottom surface of the limiting groove (32).

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