Anti-shaking electric angle adjuster

Abstract

The utility model 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] The application relates to the technical field of automobile accessories, in particular to an anti-shaking electric angle adjuster. BACKGROUND

[0002] In the development of automobile seats, as customers continuously improve the safety performance and comfort of the whole vehicle, the requirements for seat angle adjusters also increase; for example, a dynamic angle adjuster anti-loosening structure disclosed in Chinese Patent No. CN202222333870.3 comprises a clasp spring, a bushing, a public tooth plate, a driving piece and a plastic core shaft, the bushing is press-fitted in the public tooth plate, a driving CAM is installed in the public tooth plate, wedge blocks A and B are press-fitted in the public tooth plate, the upper surface of the driving CAM is provided with the driving piece, omega springs are installed in the wedge blocks A and B, the plastic core shaft is sleeved in the driving piece, the driving piece is installed in the driving CAM, a cover is sleeved in the plastic core shaft, the cover and the plastic core shaft are ultrasonically welded, the clasp spring is press-fitted in the plastic core shaft, and the size of the clasp spring is matched with the sizes of the driving CAM, the wedge blocks A, the wedge blocks B and the driving piece. The utility model adjusts the size and characteristics of the parts to reduce noise and shaking, thereby meeting the comfort requirements of customers.

[0003] However, the prior art has certain limitations in use. After the driving CAM and the wedge blocks A and B are assembled, there is a certain amount of free gap between the driving CAM and one of the wedge blocks. When the backrest of the whole chair is adjusted, the gap changes with the changes in the load of the backrest, the rotation angle and the size of the seat frame. Since the tolerance performance of the angle adjuster in the framework system is low, the angle adjuster may exhibit headrest shaking and abnormal noise at the whole chair level, which may cause the comfort experience of customers to decrease and may easily cause complaints from customers. At present, the existing improvement method is to reduce the weight of the backrest headrest, control the size of the seat opening and improve the precision of the parts, but the effect is limited. SUMMARY

[0004] The purpose of the embodiments of the application is to provide an anti-shaking electric angle adjuster, which can solve the technical problems of the prior art, such as the free gap between the driving CAM and the wedge blocks after assembly, the change in the gap with the load, the angle and the size of the seat frame during the adjustment of the backrest of the whole chair, the low tolerance of the angle adjuster causing headrest shaking and abnormal noise, the influence on comfort and the easy complaints.

[0005] The embodiment of the application provides an anti-shaking electric angle adjuster, which comprises a tooth plate assembly and a driving assembly, the tooth plate assembly comprises a female tooth plate, a driving cam, a male tooth plate and two wedge blocks, the female tooth plate is sleeved with the male tooth plate, the driving cam and the wedge blocks are arranged in the male tooth plate, the outer end of the driving cam is provided with a containing portion, an elastic pad is embedded in the containing portion, the elastic pad is clamped in the gap between the driving cam and one of the wedge blocks, and the driving assembly drives the driving cam and the wedge blocks to move in the circumferential direction.

[0006] The driving assembly comprises a driving sheet, an omega spring and a driving core shaft, the driving sheet is arranged on the driving cam, the omega spring is connected between the two wedge blocks, the driving core shaft is sleeved with the driving sheet, and the driving cam and the wedge blocks are sleeved on the core shaft.

[0007] The male tooth plate is arranged in the bushing, and the driving cam and the wedge blocks are arranged in the bushing.

[0008] The male tooth plate is arranged in the bushing, and the driving cam and the wedge blocks are arranged in the bushing.

[0009] The driving core shaft is sleeved with the cover, and the driving core shaft is fixedly connected with the cover.

[0010] The driving core shaft is arranged with a clamping spring, and the clamping spring is used for limiting the driving cam, the wedge blocks, the driving sheet and the omega spring.

[0011] The wedge blocks are provided with limiting grooves, and the two ends of the omega spring are respectively inserted into the corresponding limiting grooves.

[0012] The elastic pad is made of rubber material.

[0013] The male tooth plate and the sealing ring are fixed through laser welding.

[0014] The driving core shaft and the cover are fixed through ultrasonic welding.

[0015] The utility model discloses the beneficial effect:

[0016] The utility model provides a kind of electric angle adjuster of anti-shaking, drive cam is loaded into the accommodation part, for eliminating the gap between drive cam and one of wedge block, by increasing elastic pad to fill the free gap of angle adjuster, can effectively improve the gap mutation, wedge block jumping phenomenon etc. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows, it should be understood that the following drawings only show some embodiments of the present application, therefore should not be regarded as the limitation to the scope, for ordinary skilled in the art, on the premise of not paying creative labor, other related drawings can also be obtained according to these drawings.

[0018] Figure 1 It is the explosion map of the angle adjuster structure of left side in some embodiments of the utility model;

[0019] Figure 2 It is the schematic view of the angle adjuster structure of left side in some embodiments of the utility model;

[0020] Figure 3 It is the explosion map of the angle adjuster structure of right side in some embodiments of the utility model;

[0021] Figure 4 It is the schematic view of the angle adjuster structure of right side in some embodiments of the utility model.

[0022] The reference signs are respectively:

[0023] 1, tooth plate assembly;11, female tooth plate;12, drive cam;121, accommodation part;13, male tooth plate;14, wedge block;141, limit slot;

[0024] 2, drive assembly;21, driving piece;22, omega spring;23, drive mandrel;

[0025] 3, elastic pad;

[0026] 4, bushing;

[0027] 5, seal ring;

[0028] 6. A closure cap;

[0029] 7. A circlip. DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0032] It should be noted that: similar reference numerals and letters represent 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 the subsequent drawings.

[0033] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0034] In addition, the terms "horizontal", "vertical", "overhang" and the like do not mean that the component must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0035] In the description of the present application, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] As shown in Figures 1 to 4 The present application provides an anti-shake electric angle adjuster, which comprises a tooth plate assembly 1 and a driving assembly 2. The tooth plate assembly 1 comprises a female tooth plate 11, a driving cam 12, a male tooth plate 13 and two wedge blocks 14. The female tooth plate 11 is sleeved with the male tooth plate 13. The driving cam 12 and the wedge block 14 are arranged in the male tooth plate 13. The outer end of the driving cam 12 is provided with a containing portion 121. The containing portion 121 is embedded with an elastic pad 3. The elastic pad 3 is clamped in the gap between the driving cam 12 and one of the wedge blocks 14. The driving assembly 2 drives the driving cam 12 and the wedge block 14 to move in the circumferential direction.

[0037] The elastic pad 3 is installed in the containing portion 121 of the driving cam 12 to eliminate the gap between the driving cam 12 and one of the wedge blocks 14. By increasing the elastic pad 3 to fill the free gap of the angle adjuster, the gap mutation, the jumping of the wedge block 14 and other phenomena in the running process of the angle adjuster can be effectively improved. The wear of the bushing 4 in the durability process is reduced. The back shaking of the whole chair level is significantly improved. The smoothness of the back adjustment is improved. The tolerance capability of the angle adjuster in the framework level is improved. The potential shaking and abnormal sound in the running process of the angle adjuster in the framework back are solved. The use performance of the angle adjuster is improved. The customer satisfaction with the product is improved. The angle adjuster is provided with the containing portion 121 at the outer end of the driving cam 12. The elastic pad 3 is limited to prevent the elastic pad 3 from separating from the containing portion 121. The use stability is improved. The product quality is further improved.

[0038] The elastic pad 3 is arranged in the containing portion 121. The elastic pad 3 can prevent the elastic pad 3 from separating along the circumferential direction of the driving cam 12. The structure of the driving cam 12 itself can prevent the elastic pad 3 from separating along the axial direction of the driving shaft 23 out of the angle adjuster. The use stability is effectively ensured.

[0039] The angle adjuster in the prior art is shared by left / right parts. In the present application, the driving cam 12 of the angle adjuster is divided into left / right parts. Therefore, the angle adjusters on the left and right sides are independently divided, Figure 1 and 2 The structure of the angle adjuster on the left side is shown, Figure 3 and 4The structure diagram of the angle adjuster located at the right side is shown.

[0040] As shown in the figure, Figures 1 to 4 In this embodiment, 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 wedge blocks 14, the driving core shaft 23 is sleeved with the driving piece 21, and the driving cam 12 and the wedge block 14 are both sleeved on the core shaft.

[0041] As shown in the figure, Figures 1 to 4 In this embodiment, the bushing 4 is pressed in the public tooth plate 13, and the driving cam 12 and the wedge block 14 are arranged in the bushing 4.

[0042] As shown in the figure, Figures 1 to 4 In this embodiment, the sealing ring 5 is pressed in the public tooth plate 13, and the public tooth plate 13 is fixedly connected with the sealing ring 5.

[0043] As shown in the figure, Figures 1 to 4 In this embodiment, the cover 6 is sleeved on the driving core shaft 23, and the driving core shaft 23 is fixedly connected with the cover 6.

[0044] In use, the driving core shaft 23 rotates to drive the driving piece 21 to rotate, the driving piece 21 drives the driving cam 12 to rotate, and the driving cam 12 drives the two wedge blocks 14 to move in the circumferential direction, so as to realize the function of turning the backrest over forward and backward; when the driving core shaft 23 stops rotating, the driving piece 21, the driving cam 12 and the wedge block 14 stop at the same time, and the elastic force of the omega spring 22 makes the two wedge blocks 14 reach the self-locking state, at this time, the angle adjuster is in the stop locking state.

[0045] As shown in the figure, Figures 1 to 4 In this embodiment, the snap spring 7 is pressed in the driving core shaft 23, and the snap spring 7 is used for limiting the driving cam 12, the wedge block 14, the driving piece 21 and the omega spring 22; the snap spring 7 fastens the driving core shaft 23, ensures the position of the driving cam 12, the wedge block 14, the driving piece 21 and the omega spring 22 on the driving core shaft 23 to be stable, prevents the core parts from moving axially in the movement process, and ensures the normal operation of the whole angle adjuster.

[0046] As shown in the figure, Figures 1 to 4 In this embodiment, the limiting groove 141 is arranged on the wedge block 14, and the two ends of the omega spring 22 are respectively inserted into the corresponding limiting grooves 141, so as to realize the connection between the omega spring 22 and the two wedge blocks 14.

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

[0048] In the embodiment, the public tooth plate 13 and the sealing ring 5 are fixed by laser welding; the heat generated by laser welding is small, and the deformation of the parts of the angle adjuster core is also small, which is beneficial to the operation stability of the angle adjuster and avoids some abnormal problems such as abnormal noise and shaking caused by large heat.

[0049] In the embodiment, the driving shaft 23 and the cover 6 are fixed by ultrasonic welding; the ultrasonic welding is fast, high in quality and small in deformation, ensures the connection strength between the driving shaft 23 and the cover 6, prevents the cover 6 from loosening in the use process, improves the sealing and stability of the driving shaft 23, and thus improves the working performance of the entire angle adjuster.

[0050] Working principle: the anti-shaking electric angle adjuster provided by the application drives the driving piece 21 to rotate by rotating the driving shaft 23, drives the driving cam 12 to rotate by rotating the driving piece 21, drives the two wedge blocks 14 to move in the circumferential direction by rotating the driving cam 12, and thus realizes the function of turning the backrest back and forth; when the driving shaft 23 stops rotating, the driving piece 21, the driving cam 12 and the wedge block 14 stop at the same time, and the two wedge blocks 14 reach the self-locking state under the elastic force of the omega spring 22, so that the angle adjuster is in the stop locking state.

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

Claims

1. A vibration-damping electric angle adjuster, characterized in that: The assembly includes a toothed plate assembly (1) and a drive assembly (2). The toothed plate assembly (1) includes a female toothed plate (11), a drive 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 drive cam (12) and the wedges (14) are pressed into the male toothed plate (13). The outer end of the drive cam (12) is provided with a receiving part (121). An elastic pad (3) is embedded in the receiving part (121). The elastic pad (3) is engaged in the gap between the drive cam (12) and one of the wedges (14). The drive assembly (2) drives the drive cam (12) and the wedges (14) to move in a circumferential direction.

2. The anti-vibration electric angle adjuster according to claim 1, characterized in that: The drive assembly (2) includes a drive plate (21), an omega spring (22), and a drive spindle (23). The drive plate (21) is pressed onto the drive cam (12). The omega spring (22) is connected between the two wedges (14). The drive spindle (23) is sleeved with the drive plate (21). The drive cam (12) and the wedges (14) are both sleeved on the spindle.

3. The anti-vibration electric angle adjuster according to claim 1, characterized in that: The male tooth plate (13) is fitted with a bushing (4), and the driving cam (12) and the wedge (14) are both located inside the bushing (4).

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

5. The anti-vibration electric angle adjuster according to claim 2, characterized in that: The drive spindle (23) is fitted with a cover (6), and the drive spindle (23) is fixedly connected to the cover (6).

6. The anti-vibration electric angle adjuster according to claim 2, characterized in that: The drive spindle (23) is internally fitted with a retaining ring (7), which is used to limit the drive cam (12), the wedge (14), the drive plate (21), and the omega spring (22).

7. The anti-vibration electric angle adjuster according to claim 2, characterized in that: The wedge (14) has a limiting groove (141) and the two ends of the omega spring (22) are respectively inserted into the corresponding limiting groove (141).

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

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

10. The anti-vibration electric angle adjuster according to claim 5, characterized in that: The drive spindle (23) and the cover (6) are fixed together by ultrasonic welding.

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