CN216508038U

CN216508038U - Headrest turnover structure and automobile seat

Info

Publication number: CN216508038U
Application number: CN202122637074.4U
Authority: CN
Inventors: 郭文庚; 田建明; 张新林; 漆彬; 许康胜
Original assignee: GAC Component Co Ltd
Current assignee: GAC Component Co Ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-05-13
Anticipated expiration: 2031-10-29

Abstract

The present invention provides a headrest turnover structure, including: a base frame; the headrest frame is rotatably arranged on the base frame; the locking device can be unlocked and is used for limiting the rotation of the headrest frame relative to the base frame; the first elastic piece is used for driving the headrest frame to rotate in the positive direction; and the second elastic piece is used for providing elastic force for driving the headrest frame to rotate reversely in the process of forward rotation of the headrest frame. The utility model also provides an automobile seat which comprises the headrest turnover structure. The utility model can slow down the rotating speed of the headrest frame, so that the rotating speed of the headrest frame can be controlled, the impact load is reduced, the phenomenon that passengers are injured due to the fact that the headrest frame rotates too fast is avoided, meanwhile, abnormal sound generated when a headrest rapidly impacts a backrest can be avoided, and the safety and the appearance are effectively improved. The automobile seat has the beneficial effects because the headrest overturning structure is adopted.

Description

Headrest turnover structure and automobile seat

Technical Field

The utility model relates to the technical field of vehicles, in particular to a turnover structure of a vehicle headrest.

Background

The early car seat headrest mostly only has the gear adjusting function of direction from top to bottom, and in recent years, along with the consumer to riding comfort and the diversification that the operation experience required, car seat's headrest has progressively realized adjustable angle, can turn over function such as book. The existing reversible automobile seat is complex in structure, inconvenient to operate and large in occupied space, the rotation speed of the headrest in the adjusting process is high, passengers are easily injured by mistake, abnormal sound generated when the headrest quickly impacts the backrest exists, potential safety hazards exist, and the appearance is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve at least one technical problem in the prior art, and provides a headrest turnover structure and an automobile seat, wherein the headrest turnover structure can slow down the rotation speed of a headrest and reduce impact load.

In order to achieve the purpose, the utility model adopts the technical scheme that:

there is provided a headrest turnover structure including:

a base frame;

the headrest frame is rotatably arranged on the base frame;

the locking device can be unlocked and is used for limiting the rotation of the headrest frame relative to the base frame;

the first elastic piece is used for driving the headrest frame to rotate in the positive direction;

and the second elastic piece is used for providing elastic force for driving the headrest frame to rotate reversely in the process of forward rotation of the headrest frame.

Preferably, when the headrest frame is in the use position and the locking device is unlocked, on the headrest frame, the forward rotation torque of the first elastic piece and the gravity of the headrest frame to the rotation shaft of the headrest frame is greater than the reverse rotation torque of the second elastic piece to the rotation shaft of the headrest frame.

Preferably, when the headrest frame is in the forward rotation starting point state, the second elastic member does not apply a reverse rotation moment to the headrest frame.

Preferably, the magnitude of the positive rotation moment applied to the headrest frame by the first elastic member is gradually reduced along with the positive rotation of the headrest frame; the magnitude of the reverse rotation moment applied to the headrest frame by the second elastic piece is gradually increased along with the forward rotation of the headrest frame.

Preferably, the first elastic member and the second elastic member are both torsion springs.

Preferably, the first elastic member and/or the second elastic member can drive the locking device to move to the locking state after the locking device is unlocked.

Preferably, the headrest frame is pivoted to the base frame through a main rotating shaft, the locking device includes an auxiliary rotating shaft rotatably disposed on the headrest frame, an operating portion disposed on the auxiliary rotating shaft, a locking member disposed on the auxiliary rotating shaft, and a locking groove disposed on the base frame, the locking member is inserted into the locking groove to limit rotation of the headrest frame relative to the base frame, and the operating portion is operable to rotate the auxiliary rotating shaft to move the locking member out of the locking groove; the first elastic piece is sleeved on the auxiliary rotating shaft, and two spring feet of the first elastic piece are respectively abutted against the headrest frame and the locking piece; the second elastic piece is sleeved on the main rotating shaft, and two spring feet of the second elastic piece are respectively abutted against the base frame and the auxiliary rotating shaft.

Preferably, the operating portion is a handle provided on the auxiliary rotating shaft.

The utility model also provides an automobile seat which comprises the headrest turnover structure.

The utility model has the beneficial effects that: when the headrest turnover structure is used, the headrest frame can be unlocked by operating the locking device, the first elastic piece can drive the headrest frame to rotate in the forward direction during initial unlocking, and along with the forward rotation of the headrest frame, the second elastic piece can apply reverse driving force to the headrest frame, so that the rotation speed of the headrest frame can be reduced, the rotation speed of the headrest frame can be controlled, impact load is reduced, the phenomenon that passengers are injured due to the fact that the headrest frame rotates too fast is avoided, meanwhile, the headrest can be prevented from quickly impacting a backrest to generate abnormal sound, and safety and appearance are effectively improved. The automobile seat has the beneficial effects because the headrest overturning structure is adopted.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a structural view of a preferred embodiment of a headrest turnover structure in the present invention;

fig. 2 is an exploded view of a preferred embodiment of the headrest turnover structure in the present invention;

fig. 3 is a schematic view of the headrest turnover structure according to the present invention.

Wherein, in the figures, the respective reference numerals:

10. a base frame; 20. a headrest frame; 21. a limiting hole; 22. connecting holes; 31. a first elastic member; 32. a second elastic member; 40. a main rotating shaft; 51. an auxiliary rotating shaft; 52. a handle; 53. a locking member; 54. a locking groove; 55. a mounting seat; 61. a first bracket; 62. a second bracket; 70. and (4) a covering layer.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1 and 2, a preferred embodiment of the headrest turnover structure of the present invention includes: a base frame 10, a headrest frame 20, an unlockable locking device, a first elastic member 31, and a second elastic member 32; the headrest frame 20 is rotatably arranged on the base frame 10; the locking device is used for limiting the rotation of the headrest frame 20 relative to the base frame 10; the first elastic member 31 is used for driving the headrest frame 20 to rotate in the forward direction; the second elastic member 32 is used to provide an elastic force for driving the headrest frame 20 to rotate reversely during the forward rotation of the headrest frame 20. This headrest flip structure in use, can unblock headrest frame 20 through operation locking means, first elastic component 31 can drive or drive headrest frame 20 forward rotation together with headrest frame 20 self gravity when initial unblock, and along with headrest frame 20 forward rotation, second elastic component 32 can apply reverse drive power to headrest frame 20, thereby can slow down headrest frame 20's slew velocity, make headrest frame 20's slew velocity can be controlled, reduce impact load, avoid headrest frame 20 to rotate too fast and injure the passenger, also can avoid the headrest to strike the back fast and produce abnormal sound simultaneously, the security has effectively been improved, the perception.

As a preferred embodiment of the headrest turnover structure in the utility model, the headrest turnover structure can also have the following additional technical characteristics:

in this embodiment, when the headrest frame (20) is in the use position and the locking device is unlocked, on the headrest frame 20, the moment of the first elastic member 31 to the rotation axis of the headrest frame 20 is greater than the moment of the second elastic member 32 to the rotation axis of the headrest frame 20, so that the resultant moment of the first elastic member 31 and the second elastic member 32 to the headrest frame 20 can always keep driving the headrest frame 20 to rotate in the forward direction within the predetermined rotation angle range, thereby achieving the automatic turning of the headrest frame 20 without manually turning the headrest frame 20, and facilitating the operation and use. In the present invention, the moment of the first elastic member 31 on the rotation axis of the headrest frame 20 is the product of the elastic force applied by the first elastic member 31 on the headrest frame 20 and the distance between the vector direction of the elastic force projected on the plane perpendicular to the rotation axis of the headrest frame 20 and the rotation axis, and the moment of the second elastic member 32 on the rotation axis of the headrest frame 20 is the same as the above, that is, the general definition of the force on the rotation axis moment.

In this embodiment, when the headrest frame 20 is in the forward rotation starting point state, the second elastic member 32 does not apply force to the headrest frame 20, so as to prevent the second elastic member 32 from interfering with the start action of turning over the headrest frame 20, which is beneficial to normal use of the headrest frame 20. In other embodiments, it can be configured that when the headrest frame 20 is in the forward rotation starting point state, the second elastic member 32 can apply a reverse driving force to the headrest frame 20, and the adjustment can be flexibly performed by those skilled in the art according to the requirement, but is not limited thereto.

In this embodiment, the magnitude of the force applied to the headrest frame 20 by the first elastic member 31 gradually decreases with the forward rotation of the headrest frame 20; the magnitude of the force applied to the head rest frame 20 by the second elastic member 32 gradually increases with the forward rotation of the head rest frame 20.

In this embodiment, the first elastic member 31 and the second elastic member 32 are torsion springs, and are simple and reliable in structure, and convenient for production and assembly, and also contribute to simplifying the headrest turnover structure and reducing the size of the space occupied by the headrest turnover structure. In other embodiments, the first elastic member 31 and the second elastic member 32 may also be spring, elastic cord or other common elastic structures, but are not limited thereto.

In this embodiment, the first elastic member 31 is also used for driving the locking device to move to the locking state after the locking device is unlocked, so that after the locking device is released, the second elastic member 32 can automatically restore the locking device to the locking state, and can maintain the locking device in the locking state without applying an external force, thereby facilitating the operation and use, preventing the accidental unlocking of the locking device to cause the accidental overturning of the headrest frame 20, and being safer and more reliable. In other embodiments, the first elastic member 31 or both the first elastic member 31 and the second elastic member 32 may be used to drive the locking device to return after unlocking.

In this embodiment, the headrest frame 20 is pivotally disposed on the base frame 10 through a main rotating shaft 40, the locking device includes an auxiliary rotating shaft 51 rotatably disposed on the headrest frame 20, an operating portion disposed on the auxiliary rotating shaft 51, a locking member 53 disposed on the auxiliary rotating shaft 51, and a locking groove 54 disposed on the base frame 10, the locking member 53 is inserted in the locking groove 54 to limit the rotation of the headrest frame 20 relative to the base frame 10, and the operating portion is operable to rotate the auxiliary rotating shaft 51 to move the locking member 53 out of the locking groove 54; the first elastic member 31 is sleeved on the auxiliary rotating shaft 51, and two spring feet of the first elastic member 31 respectively abut against the headrest frame 20 and the locking member 53; the second elastic member 32 is sleeved on the main rotating shaft 40, and two spring feet of the second elastic member 32 are respectively abutted against the base frame 10 and the auxiliary rotating shaft 51, so that the structure is simple, the operation is convenient, the occupied space is small, and the installation and the use are convenient. In this embodiment, two mounting seats 55 are connected to the auxiliary rotating shaft 51, the locking member 53 is a locking rod fixed to the two mounting seats 55, and the headrest frame 20 is provided with a limiting hole 21 for limiting the rotation angle of the locking member 53 relative to the headrest frame 20. In other embodiments, the headrest frame 20 and the base frame 10 may also be connected in other conventional rotatable manners, the locking device may also be connected in other conventional locking structures such as a latch structure, and the first elastic member 31 and the second elastic member 32 may also be connected in other suitable manners, which can be flexibly adjusted by those skilled in the art according to the needs, and is not limited thereto.

In the present embodiment, the headrest frame 20 is provided with a connection hole 22 for connecting the spring leg of the first elastic member 31; a first bracket 61 for connecting one spring foot of the second elastic element 32 is welded on the auxiliary rotating shaft 51, and a second bracket 62 for connecting the other spring foot of the second elastic element 32 is welded on the base frame 10.

In the present embodiment, the two spring legs of the first elastic member 31 abut against the headrest frame 20 and the lock member 53, respectively, but in other embodiments, the two spring legs of the first elastic member 31 may abut against the base frame 10 and the headrest frame 20 directly to apply a moment to the headrest frame 20. In other embodiments, the second elastic element 32 may also be provided with other suitable arrangements to provide the opposing torque, and those skilled in the art can flexibly design and adjust the second elastic element according to the needs, and is not limited thereto.

In this embodiment, the operating portion is a handle 52 disposed on the auxiliary rotating shaft 51, and the auxiliary rotating shaft 51 can be directly pulled by the handle 52, so as to further simplify the structure and facilitate production, assembly and use. In other embodiments, the operation unit may be other common operation members such as a wheel, a lever, and a rope, but is not limited thereto.

Referring to fig. 3, a schematic view of the use of the present headrest turnover structure is shown in which the headrest frame 20 is wrapped with a cover and covering layer 70 to improve comfort.

The above additional technical features can be freely combined and used in superposition by those skilled in the art without conflict.

The utility model also provides an automobile seat which comprises the headrest turnover structure. Due to the adoption of the headrest turnover structure, the automobile seat can also slow down the rotation speed of the headrest frame 20, so that the rotation speed of the headrest frame 20 can be controlled, impact load is reduced, the phenomenon that passengers are injured due to the fact that the headrest frame 20 rotates too fast is avoided, abnormal sound caused by the fact that the headrest quickly collides with a backrest can be avoided, and safety and appearance are effectively improved.

The vehicle seat generally includes a seat cushion, a backrest, and a headrest, and in use, the base frame 10 is generally mounted on the backrest, and the headrest frame 20 serves as an internal support structure for the headrest, which are conventional in the art and will not be described in detail herein. The headrest turnover structure can be generally applied to a rear seat of an automobile, but is not limited to the headrest turnover structure and can be applied to seats in other positions.

The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the utility model, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims

1. A headrest turnover structure characterized by comprising:

a base frame (10);

the headrest frame (20) is rotatably arranged on the base frame (10);

an unlockable locking device for limiting the rotation of the headrest frame (20) relative to the base frame (10);

a first elastic member (31) for driving the headrest frame (20) to rotate in the forward direction;

and the second elastic piece (32) is used for providing an elastic force for driving the headrest frame (20) to reversely rotate in the process of forward rotation of the headrest frame (20).

2. A headrest turnover structure as claimed in claim 1, wherein when said headrest frame (20) is in the use position and said locking means is unlocked, a forward rotation moment of said first elastic member (31) and a rotation axis of said headrest frame (20) by a weight of said headrest frame (20) itself is larger than a reverse rotation moment of said second elastic member (32) to said rotation axis of said headrest frame (20) on said headrest frame (20).

3. The headrest inverting structure according to claim 1, wherein the second elastic member (32) does not apply a reverse rotation moment to the headrest frame (20) in the forward rotation start state of the headrest frame (20).

4. The headrest inverting structure according to claim 1, wherein the magnitude of the forward turning moment applied to the headrest frame (20) by the first elastic member (31) is gradually reduced with the forward turning of the headrest frame (20); the magnitude of the reverse rotation moment applied to the headrest frame (20) by the second elastic member (32) is gradually increased along with the forward rotation of the headrest frame (20).

5. The headrest overturning structure according to claim 4, wherein said first elastic member (31) and said second elastic member (32) are torsion springs.

6. A headrest turnover structure as claimed in claim 5, characterised in that said first elastic member (31) and/or said second elastic member (32) are capable of driving said locking means to a locking condition after unlocking of said locking means.

7. A headrest turnover structure as claimed in claim 6, wherein said headrest frame (20) is pivotally mounted on said base frame (10) via a main rotating shaft (40), said locking means includes a sub-rotating shaft (51) rotatably mounted on said headrest frame (20), an operating portion mounted on said sub-rotating shaft (51), a locking member (53) mounted on said sub-rotating shaft (51), and a locking groove (54) mounted on said base frame (10), said locking member (53) being inserted in said locking groove (54) to limit the rotation of said headrest frame (20) relative to said base frame (10), said operating portion being operable to rotate said sub-rotating shaft (51) to move said locking member (53) out of said locking groove (54); the first elastic piece (31) is sleeved on the auxiliary rotating shaft (51), and two spring feet of the first elastic piece (31) are respectively abutted against the headrest frame (20) and the locking piece (53); the second elastic piece (32) is sleeved on the main rotating shaft (40), and two spring feet of the second elastic piece (32) are respectively abutted against the base frame (10) and the auxiliary rotating shaft (51).

8. The headrest turnover structure according to claim 7, wherein the operation portion is a handle (52) provided on the auxiliary rotating shaft (51).

9. A car seat characterized by comprising the headrest turnover structure as claimed in any one of claims 1 to 8.