Anti-shaking electric angle adjuster

Abstract

The invention provides an anti-shaking electric angle adjuster, and relates to the technical field of automobile accessories, the anti-shaking electric angle adjuster comprises a toothed plate assembly and a driving assembly, the toothed plate assembly comprises a female toothed plate, a driving cam, a male toothed plate and two wedge blocks, the female toothed plate is connected with the male toothed plate in a sleeved mode, the driving cam and the wedge blocks are both arranged in the male toothed plate in a pressed mode, and the driving cam is connected with the driving assembly. The outer end of the driving cam is provided with a containing part, an elastic cushion block is embedded in the containing part, the elastic cushion block is clamped in a gap between the driving cam and one wedge block, and the driving assembly drives the driving cam and the wedge blocks to move in the circumferential direction; the elastic cushion block is added to fill the free gap of the angle adjuster, and the phenomena of gap sudden change, wedge block jumping and the like in the operation process of the angle adjuster can be effectively improved.

Description

Technical Field

[0001] This application relates to the technical field of automotive parts, and more specifically, to an anti-vibration electric seat adjuster. Background Art

[0002] In the development of automotive seats, as customers' requirements for the overall vehicle safety performance and comfort continue to increase, the requirements for seat adjusters also increase accordingly. For example, in Chinese Patent CN202222333870.3, a loosening prevention structure for a dynamic seat adjuster, the disclosed technical solution includes: a snap ring, a bushing, a male gear plate, a driving piece, and a plastic mandrel. The bushing is press-fitted and installed inside the male gear plate. A driving CAM is installed inside the male gear plate, and a wedge block A and a wedge block B are press-fitted and installed inside the male gear plate. The upper surface of the driving CAM is installed with a driving piece, and an omega spring is installed inside the wedge block A and the wedge block B. The plastic mandrel is sleeved inside the driving piece, and the driving piece is installed inside the driving CAM. A cover is sleeved inside the plastic mandrel, and the cover and the plastic mandrel are ultrasonically welded. The snap ring is press-fitted and installed inside the plastic mandrel, and the snap ring is adapted to the sizes of the driving CAM, the wedge block A, the wedge block B, and the driving piece. By adjusting the part sizes and part features, the present utility model aims to reduce noise and vibration, thereby meeting the comfort requirements of customers.

[0003] However, there are certain limitations in the use of this prior art. After the driving CAM, the wedge block A, and the wedge block B are assembled, there is a certain amount of free clearance between the driving CAM and one of the wedge blocks. When the backrest of the whole seat is adjusted backward, this clearance changes with the changes in the backrest load, rotation angle, and seat frame size. Since the tolerance performance of the seat adjuster in the skeleton system is low, problems such as headrest vibration and abnormal noise will occur at the whole seat level. This phenomenon will cause a decline in the comfort experience of the whole seat for customers and is also likely to lead to complaints from the client side. Currently, the existing improvement methods are to reduce the weight of the backrest headrest, control the seat opening size, and improve the part precision, but the effects are limited. Summary of the Invention

[0004] The purpose of the embodiments of this application is to provide an anti-vibration electric seat adjuster, which can solve the technical problems in the prior art, such as the limitations of the prior art, the existence of free clearance after the driving CAM and the wedge block are assembled, the change of the clearance with the load, angle, and seat frame size during the adjustment of the whole seat backrest, the low tolerance of the seat adjuster resulting in headrest vibration and abnormal noise, affecting comfort and easily leading to complaints.

[0005] An embodiment of the present application provides an anti - jitter electric angle adjuster, which includes a toothed plate assembly and a driving assembly. The toothed plate assembly includes a female toothed plate, a driving cam, a male toothed plate and two wedges. The female toothed plate is sleeved with the male toothed plate. The driving cam and the wedges are both pressed inside the male toothed plate. A receiving portion is provided at the outer end of the driving cam, and an elastic cushion block is embedded in the receiving portion. The elastic cushion block is clamped in the gap between the driving cam and one of the wedges. The driving assembly drives the driving cam and the wedges to move in the circumferential direction.

[0006] Among them, the driving assembly includes a driving plate, an omega spring and a driving core shaft. The driving plate is pressed on the driving cam. The omega spring is connected between the two wedges. The driving core shaft is sleeved with the driving plate. The driving cam and the wedges are both sleeved on the core shaft.

[0007] Among them, a bushing is pressed inside the male toothed plate, and the driving cam and the wedges are both arranged inside the bushing.

[0008] Among them, a sealing ring is pressed inside the male toothed plate, and the male toothed plate is fixedly connected to the sealing ring.

[0009] Among them, a sealing cover is sleeved on the driving core shaft, and the driving core shaft is fixedly connected to the sealing cover.

[0010] Among them, a snap ring is pressed inside the driving core shaft, and the snap ring is used to limit the driving cam, the wedges, the driving plate and the omega spring.

[0011] Among them, a limiting groove is provided on the wedge, and the two ends of the omega spring are respectively inserted and matched with the corresponding limiting grooves.

[0012] Among them, the elastic cushion block is made of rubber material.

[0013] Among them, the male toothed plate and the sealing ring are fixed by laser welding.

[0014] Among them, the driving core shaft and the sealing cover are fixed by ultrasonic welding.

[0015] The beneficial effects of the present invention:

[0016] The present invention provides an anti-shake electric recliner, in which an elastic pad is installed in a receiving portion of a driving cam to eliminate the gap between the driving cam and one of the wedge blocks. By adding the elastic pad to fill the free gap of the recliner, the gap mutation and wedge block jump during operation of the recliner can be effectively improved, and the wear of the bushing during the durability process can be slowed down. The jitter of the whole chair backrest is significantly improved, and the smoothness of the backrest adjustment is improved. At the same time, the tolerance capacity of the recliner at the skeleton level is also improved, and the potential jitter, abnormal noise and other problems of the recliner during the operation of the skeleton backrest are solved, the performance of the recliner is improved, and the customer's satisfaction with the product is improved. The recliner is provided with a receiving portion at the outer end of the driving cam to limit the elastic pad to prevent the elastic pad from detaching from the receiving portion, thereby improving the stability of use and further improving the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 An exploded view of a recliner structure located on the left side in some embodiments of the present application;

[0019] Figure 2 It is a schematic diagram of a recliner structure located on the left side in some embodiments of the present application;

[0020] Figure 3 An exploded view of a recliner structure located on the right side in some embodiments of the present application;

[0021] Figure 4 This is a schematic diagram of the angle adjuster structure located on the right side in some embodiments of the present application.

[0022] The reference numerals are:

[0023] 1. tooth plate assembly; 11. female tooth plate; 12. driving cam; 121. accommodating portion; 13. male tooth plate; 14. wedge block; 141. limiting groove;

[0024] 2. Driving assembly; 21. Driving plate; 22. Omega spring; 23. Driving mandrel;

[0025] 3. Elastic pad;

[0026] 4. Bushing;

[0027] 5. Sealing ring;

[0028] 6. Cap;

[0029] 7. Snap ring. Specific embodiments

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. The components of the embodiments of this application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of this application that is claimed, but merely represents selected embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without making creative efforts fall within the scope of protection of this application.

[0032] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0033] In the description of this application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of this application. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0034] In addition, the terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0035] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] like Figures 1 to 4 As shown, an embodiment of the present application provides an anti-shake electric angle adjuster, including a tooth plate assembly 1 and a drive assembly 2, the tooth plate assembly 1 includes a female tooth plate 11, a drive cam 12, a male tooth plate 13 and two wedge blocks 14, the female tooth plate 11 is socketed with the male tooth plate 13, the drive cam 12 and the wedge blocks 14 are pressed into the male tooth plate 13, the outer end of the drive cam 12 is provided with a receiving portion 121, the receiving portion 121 is embedded with an elastic pad 3, the elastic pad 3 is clamped in the gap between the drive cam 12 and one of the wedge blocks 14, the drive assembly 2 drives the drive cam 12 and the wedge blocks 14 to move in a circular direction.

[0037] The elastic pad 3 is installed in the receiving portion 121 of the driving cam 12 to eliminate the gap between the driving cam 12 and one of the wedge blocks 14. By adding the elastic pad 3 to fill the free gap of the recliner, the gap mutation and the wedge block 14 jumping phenomena during the operation of the recliner can be effectively improved, and the wear of the bushing 4 during the durability process can be slowed down. The jitter of the whole chair level backrest is significantly improved, and the smoothness of the backrest adjustment is improved. At the same time, the tolerance capacity of the recliner at the skeleton level is also improved, and the potential jitter, abnormal noise and other problems of the recliner during the operation of the skeleton backrest are solved, the performance of the recliner is improved, and the customer's satisfaction with the product is improved. The recliner is provided with a receiving portion 121 at the outer end of the driving cam 12 to limit the elastic pad 3 to prevent the elastic pad 3 from detaching from the receiving portion 121, thereby improving the stability of use and further improving the product quality.

[0038] The elastic pad 3 is arranged in the accommodating portion 121, which can prevent the elastic pad 3 from circumferentially escaping from the driving cam 12, and can also prevent the elastic pad 3 from axially escaping from the outside of the recliner along the driving spindle 23 by utilizing the structure of the driving cam 12 itself, thereby effectively ensuring the stability of use.

[0039] In the prior art, the recliner is shared by the left and right parts. In the present invention, the driving cam 12 of the recliner is divided into the left and right parts, so the recliners on the left and right sides are also independently distinguished. Figure 1 and 2 The structure diagram of the angle adjuster on the left is shown. Figure 3 and 4The structural diagram of the recliner located on the right side is shown.

[0040] As Figures 1 to 4 shown, in this embodiment, the driving assembly 2 includes a driving plate 21, an omega spring 22 and a driving mandrel 23. The driving plate 21 is pressed on the driving cam 12. The omega spring 22 is connected between the two wedges 14. The driving mandrel 23 is sleeved on the driving plate 21. The driving cam 12 and the wedges 14 are both sleeved on the mandrel.

[0041] As Figures 1 to 4 shown, in this embodiment, a bushing 4 is pressed inside the male toothed plate 13. The driving cam 12 and the wedges 14 are both arranged inside the bushing 4.

[0042] As Figures 1 to 4 shown, in this embodiment, a sealing ring 5 is pressed inside the male toothed plate 13, and the male toothed plate 13 is fixedly connected to the sealing ring 5.

[0043] As Figures 1 to 4 shown, in this embodiment, a cover 6 is sleeved on the driving mandrel 23, and the driving mandrel 23 is fixedly connected to the cover 6.

[0044] During use, the rotation of the driving mandrel 23 drives the rotation of the driving plate 21. The rotation of the driving plate 21 drives the rotation of the driving cam 12. The driving cam 12 drives the two wedges 14 to move in the circumferential direction, thereby realizing the function of the backrest tilting forward and backward. When the driving mandrel 23 stops rotating, the driving plate 21, the driving cam 12 and the wedges 14 stop simultaneously. Along with the elastic force of the omega spring 22, the two wedges 14 reach the self-locking state. At this time, the recliner is in the stop locking state.

[0045] As Figures 1 to 4 shown, in this embodiment, a snap ring 7 is pressed inside the driving mandrel 23. The snap ring 7 is used to limit the driving cam 12, the wedges 14, the driving plate 21 and the omega spring 22. The snap ring 7 tightens the driving mandrel 23 to ensure the stable positions of the driving cam 12, the wedges 14, the driving plate 21 and the omega spring 22 on the driving mandrel 23, prevent the core parts from axially moving during the movement, and ensure the normal operation of the entire recliner.

[0046] As Figures 1 to 4 shown, in this embodiment, a limiting groove 141 is formed on the wedge 14. The two ends of the omega spring 22 are respectively inserted and matched with the corresponding limiting grooves 141, thereby realizing the connection between the omega spring 22 and the two wedges 14.

[0047] In this embodiment, the elastic cushion block 3 is made of rubber material; the rubber material has good wear resistance and a long service life.

[0048] In this embodiment, the male tooth plate 13 and the sealing ring 5 are fixed by laser welding; the heat generated by laser welding is small, and the influence on the deformation of the core parts of the angle adjuster is also small, which is beneficial to the operation stability of the angle adjuster and avoids abnormal problems such as abnormal noises and vibrations caused by excessive heat generation.

[0049] In this embodiment, the drive core shaft 23 and the cover 6 are fixed by ultrasonic welding; ultrasonic welding has a fast speed, high quality and small deformation, which ensures the connection strength between the drive core shaft 23 and the cover 6, prevents the cover 6 from loosening during use, improves the sealing performance and stability of the drive core shaft 23, and thus improves the working performance of the entire angle adjuster.

[0050] Working principle: For the anti-vibration electric angle adjuster provided in this application, during use, the rotation of the drive core shaft 23 drives the rotation of the drive plate 21, the rotation of the drive plate 21 drives the rotation of the drive cam 12, and the drive cam 12 drives the two wedge blocks 14 to move in the circumferential direction, thereby realizing the function of the backrest flipping back and forth; when the drive core shaft 23 stops rotating, the drive plate 21, the drive cam 12, and the wedge blocks 14 stop simultaneously, and with the elastic force of the omega spring 22, the two wedge blocks 14 reach a self-locking state, and at this time the angle adjuster is in a stop locking state.

[0051] The above are only the preferred embodiments of this application and are not used to limit this application. For those skilled in the art, this application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

1. An anti-shake electric angle adjuster, characterized in that: It includes a toothed plate assembly (1) and a driving assembly (2). The toothed plate assembly (1) includes a female toothed plate (11), a driving cam (12), a male toothed plate (13) and two wedges (14). The female toothed plate (11) is sleeved with the male toothed plate (13). The driving cam (12) and the wedges (14) are both pressed in the male toothed plate (13). A receiving portion (121) is provided at the outer end of the driving cam (12), and an elastic cushion block (3) is embedded in the receiving portion (121). The elastic cushion block (3) is clamped in the gap between the driving cam (12) and one of the wedges (14). The driving assembly (2) drives the driving cam (12) and the wedges (14) to move in the circumferential direction.

2. The anti-shake electric angle adjuster according to claim 1, wherein: The driving assembly (2) includes a driving piece (21), an omega spring (22) and a driving core shaft (23). The driving piece (21) is pressed on the driving cam (12). The omega spring (22) is connected between the two wedges (14). The driving core shaft (23) is sleeved with the driving piece (21). The driving cam (12) and the wedges (14) are both sleeved on the core shaft.

3. The anti-shake electric angle adjuster according to claim 1, characterized in that: A bushing (4) is pressed in the male toothed plate (13). The driving cam (12) and the wedges (14) are both arranged in the bushing (4).

4. The anti-shake electric angle adjuster according to claim 2, characterized in that: A sealing ring (5) is pressed in the male toothed plate (13), and the male toothed plate (13) is fixedly connected to the sealing ring (5).

5. The anti-shake electric angle adjuster according to claim 2, characterized in that: A sealing cover (6) is sleeved on the driving core shaft (23), and the driving core shaft (23) is fixedly connected to the sealing cover (6).

6. The anti-shake electric angle adjuster according to claim 2, wherein: A snap ring (7) is pressed in the driving core shaft (23), and the snap ring (7) is used to limit the driving cam (12), the wedges (14), the driving piece (21) and the omega spring (22).

7. The anti-shake electric angle adjuster according to claim 2, wherein: A limiting groove (141) is formed on the wedge (14), and the two ends of the omega spring (22) are respectively inserted and matched with the corresponding limiting grooves (141).

8. The anti-shake electric angle adjuster according to claim 1, characterized in that: The elastic cushion block (3) is made of rubber material.

9. The anti-shake electric angle adjuster according to claim 4, characterized in that: The male toothed plate (13) and the sealing ring (5) are fixed by laser welding.

10. The anti-shake electric angle adjuster according to claim 5, characterized in that: The driving core shaft (23) and the sealing cover (6) are fixed by ultrasonic welding.

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