Headrest folding structure, seat back, seat and vehicle

Abstract

The utility model relates to vehicle parts technical field, concretely provides a headrest folding structure, seat back, seat and vehicle, aims at solving the problem that the headrest folding mechanism of existing headrest occupies big inside space. For this purpose, the headrest folding structure of the utility model includes support and drive assembly, transmission plate and headrest rod support set on the support, the support includes the backplate set vertically and the side plate symmetrically set on the both sides of backplate, is provided with first guide slot on the side plate, transmission plate and headrest rod support are respectively symmetrically set on the both sides of two side plates, the upper end of transmission plate is provided with second guide slot, the lower end of transmission plate is connected with drive assembly through the fastener passing through first guide slot, the upper end of headrest rod support is pivotally connected with the upper portion of side plate, and the lower end of headrest rod support is set in second guide slot. The headrest folding structure is through setting up the multi-guide rail connecting rod structure on the backrest framework, realizes the headrest folding function, and does not occupy the inside space of headrest.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parts technology, specifically to a headrest folding structure, a seat back, a seat, and a vehicle. Background Technology

[0002] With the rapid development of new energy vehicles, the use of vehicle seats is becoming increasingly diverse. Most headrests on the market can be adjusted forward and backward, up and down, but few offer a one-touch forward folding adjustment, thus hindering efficient storage. Furthermore, the folding mechanism in most headrests is integrated inside the headrest itself, sacrificing internal space; in other words, accommodating the folding mechanism sacrifices other adjustment functions. Utility Model Content

[0003] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problem that the existing headrest folding mechanism occupies a large amount of internal space of the headrest and affects other functions of the headrest.

[0004] In a first aspect, the present invention provides a headrest folding structure, including a support and a drive assembly, a transmission plate, and a headrest rod bracket disposed on the support; the support includes a vertically arranged back plate and side plates symmetrically arranged on both sides of the back plate, the side plates being provided with a first guide groove; the transmission plate and the headrest rod bracket are respectively symmetrically arranged on the outer sides of the two side plates; the upper end of the transmission plate is provided with a second guide groove, and the lower end of the transmission plate is connected to the drive assembly by a fastener passing through the first guide groove, so that the drive assembly can drive the transmission plate to move up and down along the first guide groove; the upper end of the headrest rod bracket is pivotally connected to the upper part of the side plate, and the lower end of the headrest rod bracket is disposed in the second guide groove, the second guide groove being able to drive the headrest rod bracket to rotate around its pivot point with the side plate, so as to drive the headrest rod disposed in the headrest rod bracket to fold.

[0005] Furthermore, the drive assembly includes a drive motor, a lead screw, and a drive block; the drive motor is disposed on the upper part of the support; the upper end of the lead screw is connected to the drive motor, and the lower end of the lead screw 22 is threadedly connected to the drive block; the drive block is disposed between the two side plates, and its two ends are connected to the lower end of the transmission plate by fasteners passing through the first guide groove.

[0006] Furthermore, the second guide groove is arc-shaped.

[0007] Furthermore, a return spring is provided at the pivot point between the upper end of the headrest rod bracket and the side plate; one end of the return spring is connected to the headrest rod bracket, and the other end is connected to the side plate.

[0008] Furthermore, the side plate is provided with a third guide groove that is parallel to the first guide groove, and the transmission plate is connected to the third guide groove by fasteners.

[0009] Furthermore, a headrest guide sleeve is provided on the headrest rod bracket.

[0010] In a second aspect, the present invention also provides a seat back, comprising: a backrest frame and a headrest folding structure as described above, wherein the headrest folding structure is fixed to the upper part of the backrest frame by the support.

[0011] Furthermore, a cushioning pad is provided on the backrest frame, and the cushioning pad is located behind the headrest rod bracket and can abut against the headrest rod.

[0012] In a third aspect, the present invention also provides a seat, comprising: a seat back and headrest assembly as described above, wherein the headrest assembly comprises a headrest rod and a headrest body, and the headrest rod is detachably inserted into a headrest rod bracket in a headrest folding structure on the seat back.

[0013] In a fourth aspect, the present invention provides a vehicle that includes the seat described above.

[0014] When adopting the above technical solution, the headrest flipping structure in this utility model achieves the folding of the seat headrest through a multi-rail linkage structure. By arranging the headrest flipping structure on the upper part of the seat back frame, while ensuring the function of large-angle folding of the headrest, it is also ensured that the headrest flipping structure does not occupy the internal space of the headrest. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram illustrating the interaction between the headrest folding structure, the backrest frame, and the headrest assembly in an embodiment of this application.

[0017] Figure 2 This is a schematic diagram showing the state of the headrest before and after folding in the embodiments of this application;

[0018] Figure 3 and Figure 4 This is a schematic diagram of the headrest folding structure in an embodiment of this application;

[0019] Figure 5This is a schematic diagram of the support structure in the headrest folding structure in the embodiments of this application;

[0020] Figure 6 This is a schematic diagram of the structure of the headrest folding structure in this application, showing the cooperation between the support and the drive component.

[0021] Figure 7 and Figure 8 This is a schematic diagram showing the interaction between the transmission plate, headrest rod bracket, support, and drive block in the headrest folding structure of this application embodiment;

[0022] Figure 9 This is a front view of the headrest folding structure in an embodiment of this application;

[0023] Figure 10 for Figure 9 Cross-sectional view at point AA;

[0024] Figure 11 This is a schematic diagram of the headrest rod and the buffer pad in an embodiment of this application.

[0025] Figure label:

[0026] 1. Headrest folding structure; 10. Support; 11. Back panel; 12. Side panel; 121. First guide groove; 122. Third guide groove; 20. Drive assembly; 21. Drive motor; 22. Lead screw; 23. Drive block; 30. Transmission plate; 31. Second guide groove; 40. Headrest rod bracket; 41. Headrest guide sleeve; 50. Return spring; 60. Limiting block; 2. Headrest assembly; 201. Headrest rod; 202. Headrest body; 3. Backrest frame. Detailed Implementation

[0027] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0028] First, it should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "vertical," "horizontal," "longitudinal," "inner," and "outer," which indicate directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] like Figure 1 and Figure 2 As shown, this application embodiment provides a headrest folding structure 1, which is disposed on the upper part of the backrest frame 3 of the seat, and can realize the operation of folding the headrest assembly 2 installed thereon.

[0031] like Figure 3 and Figure 4 As shown, the headrest folding structure 1 includes: a support 10 and a drive assembly 20, a transmission plate 30 and a headrest rod bracket 40 disposed on the support 10.

[0032] like Figures 3 to 5 As shown, the support 10 includes a vertically arranged back plate 11 and side plates 12 symmetrically arranged on both sides of the back plate 11. A first guide groove 121 is provided on the side plate 12. A transmission plate 30 and a headrest rod bracket 40 are symmetrically arranged on the outer sides of the two side plates 12. In other words, a transmission plate 30 and a headrest rod bracket 40 are provided on the outer side of each side plate 12. A second guide groove 31 is provided at the upper end of the transmission plate 30, and the lower end of the transmission plate 30 is connected to the drive assembly 20 via fasteners passing through the first guide groove 121, so that the drive assembly 20 can drive the transmission plate 30 to move up and down along the first guide groove 121.

[0033] like Figures 3 to 6As shown, the drive assembly 20 includes a drive motor 21, a lead screw 22, and a drive block 23. The drive motor 21 is located on the upper part of the support 10; the upper end of the lead screw 22 is connected to the drive motor 21, and the lower end of the lead screw 22 is threadedly connected to the drive block 23; the drive block 23 is located between the two side plates 12, and its two ends are connected to the lower end of the transmission plate 30 by fasteners passing through the first guide groove 121. For example, the drive block 23 can be connected to the lower end of the transmission plate 30 by a stepped bolt, the stud of which passes through the first guide groove 121 on the side plate 12. When the drive motor 21 drives the lead screw 22 to rotate (clockwise or counterclockwise), the drive block 23 connected to the lower end of the lead screw 22 will move upward or downward along the lead screw 22 under the drive of the lead screw 22. When the drive block 23 moves up and down along the lead screw 22, the transmission plate 30, which is connected to the drive block 23 by fasteners passing through the first guide groove 121, also moves up and down along the first guide groove 121 under the drive of the drive block 23. The second guide groove 31, which is provided at the upper end of the transmission rod, also moves up and down accordingly.

[0034] like Figure 3 , Figure 4 and Figure 7 and Figure 8 As shown, the upper end of the headrest rod bracket 40 is pivotally connected to the upper part of the side plate 12, and the lower end of the headrest rod bracket 40 is disposed in the second guide groove 31. The second guide groove 31 can drive the headrest rod bracket 40 to rotate around its pivot point with the side plate 12, thereby driving the headrest rod 201 disposed in the headrest rod bracket 40 to fold. The upper end of the headrest rod bracket 40 can be pivotally connected to the upper part of the side plate 12 by a stepped bolt, so that the headrest rod bracket 40 can rotate around its pivot point with the side plate 12, while the lower end of the headrest rod bracket 40 can be disposed in the second guide groove 31 at the upper end of the transmission plate 30 by a stepped rivet. When the second guide groove 31 moves up and down with the transmission plate 30, the lower end of the headrest rod bracket 40 can rotate around its pivot point with the side plate 12 under the action of the second guide groove 31. The headrest rod 201 of the headrest assembly 2 is inserted into the headrest rod bracket 40, thereby achieving the folding of the headrest by rotating the headrest rod bracket 40 around its pivot point with the side plate 12.

[0035] Furthermore, such as Figure 7 and Figure 8 As shown, the second guide groove 31 is set to an arc shape. This design minimizes the width of the transmission plate 30 while ensuring the headrest folding angle, thereby reducing the thickness of the entire headrest folding structure 1 along the X-axis in the vehicle's XYZ coordinate system and avoiding increasing the thickness of the seat back along the X-axis. The arc and length of the second guide groove 31 can be set as needed; this embodiment does not specifically limit this.

[0036] Furthermore, such as Figure 7 As shown, a headrest guide sleeve 41 is provided on the headrest rod bracket 40, and the headrest rod 201 is inserted into the headrest guide sleeve 41, which protects the headrest rod 201 and the headrest rod bracket 40.

[0037] Furthermore, such as Figure 3 and Figure 5 As shown, a return spring 50 is provided at the pivot point between the upper end of the headrest support 40 and the side plate 12. One end of the return spring 50 is connected to the headrest support 40, and the other end is connected to the side plate 12. When the headrest folds forward, the return spring 50 stores energy and balances the weight of the headrest, reducing sudden changes in adjustment speed and jamming caused by the weight of the headrest. When the headrest returns to its original position from the folded state, the force applied by the return spring 50 to the headrest support 40 reduces the force applied by the drive block 23 of the drive motor 21 and improves the sound quality of the drive motor 21.

[0038] Furthermore, such as Figure 3 , Figure 5 and Figure 7 and Figure 8 As shown, the side plate 12 is provided with a third guide groove 122 that is parallel to the first guide groove 121, and the transmission plate 30 is connected to the third guide groove 122 by fasteners. By providing two parallel guide grooves, the first guide groove 121 and the third guide groove 122, on the transmission plate 30, the transmission plate 30 can stably reciprocate along the first guide groove 121 and the third guide groove 122 under the drive of the drive block 23.

[0039] Furthermore, such as Figure 9 and Figure 10 As shown, a limit block 60 is provided at the lower end of the first guide groove 121 to limit the downward movement of the drive block 23.

[0040] like Figure 1 and Figure 3 As shown, this application embodiment provides a seat backrest, which includes a backrest frame 3 and a headrest folding structure 1 as described above. The headrest folding structure 1 is fixed to the upper part of the backrest frame 3 by a support 10. In a specific embodiment, the upper part of the backrest frame 3 is a sheet metal stamping part, and the support 10 in the headrest folding structure 1 is connected to the sheet metal stamping part, thereby fixing the entire headrest folding structure 1 to the backrest frame 3.

[0041] Furthermore, such as Figure 11 As shown, a cushioning pad is provided on the backrest frame 3, and the cushioning pad is located behind the headrest rod bracket 40. During the folding process of the headrest, the cushioning pad can abut against the headrest rod 201 inserted in the headrest rod bracket 40, thereby reducing headrest wobbling and eliminating abnormal noise.

[0042] This application embodiment also provides a seat, which includes a seat back and headrest assembly 2 as described above. Figure 1 As shown, the headrest assembly 2 includes a headrest rod 201 and a headrest body 202. The headrest rod 201 can be detachably inserted into the headrest rod bracket 40 in the headrest folding structure 1 on the seat back.

[0043] This application provides another vehicle, which includes the seats described above.

[0044] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A headrest folding structure (1), characterized in that, It includes a support (10) and a drive assembly (20), a transmission plate (30) and a headrest rod bracket (40) disposed on the support (10); The support (10) includes a vertically arranged back plate (11) and side plates (12) symmetrically arranged on both sides of the back plate (11), and the side plates (12) are provided with a first guide groove (121); The transmission plate (30) and the headrest rod bracket (40) are respectively symmetrically arranged on the outside of the two side plates (12); The upper end of the transmission plate (30) is provided with a second guide groove (31), and the lower end of the transmission plate (30) is connected to the drive assembly (20) through a fastener passing through the first guide groove (121) so that the drive assembly (20) can drive the transmission plate (30) to move up and down along the first guide groove (121). The upper end of the headrest rod bracket (40) is pivotally connected to the upper part of the side plate (12), and the lower end of the headrest rod bracket (40) is disposed in the second guide groove (31). The second guide groove (31) can drive the headrest rod bracket (40) to rotate around its pivot point with the side plate (12) to drive the headrest rod (201) disposed in the headrest rod bracket (40) to fold.

2. The headrest folding structure (1) according to claim 1, characterized in that, The drive assembly (20) includes a drive motor (21), a lead screw (22), and a drive block (23); The drive motor (21) is located on the upper part of the support (10); The upper end of the lead screw (22) is connected to the drive motor (21), and the lower end of the lead screw (22) is threadedly connected to the drive block (23). The drive block (23) is disposed between the two side plates (12), and its two ends are connected to the lower end of the transmission plate (30) by fasteners passing through the first guide groove (121).

3. The headrest folding structure (1) according to claim 2, characterized in that, The second guide groove (31) is arc-shaped.

4. The headrest folding structure (1) according to claim 3, characterized in that, A return spring (50) is provided at the pivot point between the upper end of the headrest rod bracket (40) and the side plate (12); One end of the return spring (50) is connected to the headrest rod bracket (40), and the other end is connected to the side plate (12).

5. The headrest folding structure (1) according to claim 4, characterized in that, The side plate (12) is provided with a third guide groove (122) that is parallel to the first guide groove (121), and the transmission plate (30) is connected to the third guide groove (122) by fasteners.

6. The headrest folding structure (1) according to claim 5, characterized in that, A headrest guide sleeve (41) is provided on the headrest rod bracket (40).

7. A seat backrest, characterized in that, include: Backrest frame (3), and The headrest folding structure (1) as described in any one of claims 1 to 6 is fixed to the upper part of the backrest frame (3) by the support (10).

8. The seat backrest according to claim 7, characterized in that, The backrest frame (3) is provided with a cushioning pad, which is located behind the headrest rod bracket (40) and can abut against the headrest rod (201).

9. A type of seat, characterized in that, include: The seat back as described in claim 7 or 8, and The headrest assembly (2) includes a headrest rod (201) and a headrest body (202), wherein the headrest rod (201) is detachably inserted into a headrest rod bracket (40) in the headrest folding structure (1) on the seat back.

10. A vehicle, characterized in that, Includes the seat as described in claim 9.

Images