一种具有防转动结构的头枕导套及头枕系统

Abstract

本实用新型公开了一种具有防转动结构的头枕导套及头枕系统，包括固定组件，固定组件包括用于放置头枕的轴套；加强筋组件，加强筋组件包括若干设置在轴套的外侧面的纵向加强筋，纵向加强筋与轴套长度方向一致；设置在汽车座椅靠背上的固定管，纵向加强筋设置在固定管的内部，固定管与纵向加强筋的长度方向一致且长度相同，固定管的横截面为矩形，全部纵向加强筋存在与固定管的四侧面分别重合的侧面。本实用新型设置若干加强筋组件与轴套的外侧面固定连接，使得轴套和加强筋组件的运动状态相同，其次设置横截面为矩形的固定管约束加强筋组件相对固定管的转动情况，进而约束轴套相对固定管的转动，进而约束头枕导套相对汽车座椅靠背的转动。

Claims

1. A headrest guide having an anti-rotation structure for mounting a headrest on a backrest of a vehicle seat, characterized by The headrest guide sleeve includes: Fixing component (1), the fixing component (1) includes a bushing (11) for placing the headrest; The reinforcing rib assembly (2) includes a plurality of longitudinal reinforcing ribs (21) disposed on the outer side of the bushing (11), wherein the longitudinal reinforcing ribs (21) are aligned with the length direction of the bushing (11); The fixing tube (4) is provided on the back of the car seat, and the longitudinal reinforcing rib (21) is provided inside the fixing tube (4). The length direction of the fixing tube (4) is consistent with that of the longitudinal reinforcing rib (21), and the inner side of the fixing tube (4) can restrict the rotation of the longitudinal reinforcing rib (21).

2. The headrest guide sleeve of claim 1, wherein: The fixed tube (4) has the same length as the longitudinal reinforcing rib (21), the cross-section of the fixed tube (4) is rectangular, and all the longitudinal reinforcing ribs (21) have sides that overlap with the four sides of the fixed tube (4); The reinforcing rib assembly (2) has four sets of longitudinal reinforcing ribs (21) arranged along the circumference of the bushing (11). Each longitudinal reinforcing rib (21) has a side A that does not intersect with the side of the bushing (11). The side A of the longitudinal reinforcing ribs (21) in adjacent sets are perpendicular to each other, and the side A of the longitudinal reinforcing ribs (21) in opposite sets are parallel or coincident. The plane containing the side A of the four sets of longitudinal reinforcing ribs (21) can form the four sides of a cuboid. The four sides of the cuboid coincide with the four sides of the fixed tube (4).

3. The headrest guide sleeve of claim 2, wherein: The longitudinal stiffener (21) includes side A and side B, both along the length direction, wherein side B consists of two relatively parallel sides and both perpendicular to side A; The reinforcing rib assembly (2) also includes several sets of transverse reinforcing ribs (22) perpendicular to the side surface B. Each set of transverse reinforcing ribs (22) is located on the same plane perpendicular to the side surface B, and the side surface B and the transverse reinforcing ribs (22) respectively form a cross intersection.

4. The headrest guide sleeve of claim 2, wherein, The headrest guide sleeve also includes a locking assembly (3) formed on the side of the bushing (11), the locking assembly (3) for limiting the connecting rod of the headrest includes: A lower buckle (31) is provided at the position of the longitudinal reinforcing rib (21) of the relative group. The lower buckle (31) forms an elastic structure that can swing relative to the axis of the bushing (11). The swing surface of the elastic structure is coplanar with the axis. The part of the elastic structure that is recessed into the inner side of the bushing (11) is a first elastic protrusion (312). The first elastic protrusion (312) contacts the side of the connecting rod of the headrest. The second elastic protrusion (33) and the third elastic protrusion (34) are respectively set at the position of the longitudinal reinforcing rib (21) of the other opposite group. The second elastic protrusion (33) and the third elastic protrusion (34) are both elastic structures that are recessed into the inner side of the bushing (11). The second elastic protrusion (33) and the third elastic protrusion (34) respectively contact the side of the connecting rod of the headrest.

5. The headrest guide sleeve according to claim 4, characterized in that: The locking assembly (3) also includes an upper limit plate (32) disposed on the side of the bushing (11). The upper limit plate (32) is disposed at one end of the longitudinal reinforcing rib (21). The projection of the upper limit plate (32) onto the fixed tube (4) along the axial direction can cover the end face of the fixed tube (4). The lower buckle (31) forms a conical portion relative to the fixed tube (4) as a limiting buckle (311) to guide the bushing (11) into the fixed tube (4). The limiting buckle (311) forms a limiting surface perpendicular to the axis of the bushing (11). The limiting surface is parallel to the bottom surface of the upper limit plate (32), and the distance between the limiting surface and the bottom surface of the upper limit plate (32) is the length of the longitudinal reinforcing rib (21). The upper limit plate (32) and the limiting latch (311) are located at both ends of the longitudinal reinforcing rib (21) to restrict the axial degree of freedom of the longitudinal reinforcing rib (21).

6. The headrest guide sleeve of claim 5, wherein: The fixing component (1) forms a through hole for placing the connecting rod of the headrest, and the through hole is coaxial with the bushing (11); The fixing component (1) further includes a guide plate (12) disposed at one end of the bushing (11) away from the reinforcing rib component (2). The connection surface between the guide plate (12) and the bushing (11) is an inclined plane. The inclined plane has an angle with the axis. A button (13) is placed at one end of the guide plate (12) away from the bushing (11). The guide plate (12) forms a side wall that guides the button (13) to move along the inclined plane. A compression spring (14) is disposed between the button (13) and the side wall. The fixing component (1) also includes a cap (15) with an internal cavity, the cavity being able to hold the button (13) and the compression spring (14), the button (13) being able to move perpendicular to the axis to control the diameter of the through hole.

7. The headrest guide sleeve of claim 6, wherein: The reinforcing rib assembly (2) also includes longitudinal connecting ribs (23) disposed on the side of the bushing (11). The longitudinal connecting ribs (23) are evenly distributed on the side of the bushing (11). The longitudinal connecting ribs (23), the guide plate (12) and the upper limit plate (32) are disposed at the same end of the bushing (11). The two ends of the longitudinal connecting ribs (23) are respectively connected to the bottom surface of the guide plate (12) and the upper limit plate (32).

8. A headrest system characterized by, include: The headrest guide sleeve as described in any one of claims 1 to 7, wherein the headrest guide sleeve is provided in pairs on a single vehicle seat back; The reinforcing rib assembly (2) also includes a misalignment prevention protrusion (24) protruding from the side of the bushing (11). The misalignment prevention protrusion (24) can be embedded in the side wall of the fixing tube (4). The pairs of misalignment prevention protrusions (24) are different in size to distinguish the left and right positions of the individual fixing assembly (1) relative to the back of the car seat.

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