CN108608909B

CN108608909B - Automobile seat headrest

Info

Publication number: CN108608909B
Application number: CN201611077697.8A
Authority: CN
Inventors: 白克宾; 杨伟奇; 姜振春; 庄密; 孟令娜; 朱聪思
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2016-11-30
Filing date: 2016-11-30
Publication date: 2020-02-21
Anticipated expiration: 2036-11-30
Also published as: CN108608909A

Abstract

The invention provides a headrest for an automobile seat, which comprises a headrest rod, a fixing part fixedly arranged opposite to the headrest rod, a headrest unit with a front headrest and a sliding connection mechanism, an air bag unit arranged between the front headrest and the fixing part and used for applying expansion force to the front headrest in an inflation and expansion process so as to enable the front headrest to slide away from the fixing part, and an elastic restoring unit acting on the headrest unit and used for applying elastic restoring force to the headrest unit in an deflation process of the air bag unit. The automobile seat headrest drives the front headrest and the fixing part to slide away from each other by utilizing the inflation and expansion of the air bag unit, and drives the front headrest to return through the elastic recovery unit when the air bag unit is deflated, so that the front headrest has a good buffering effect when in use.

Description

Automobile seat headrest

Technical Field

The invention relates to the technical field of vehicles, in particular to a headrest of an automobile seat.

Background

The automobile seat is one of important parts of an automobile, and a seat headrest arranged on the automobile seat can support, protect and comfort the head of a passenger. In some high-end models, the headrest is generally adjustable along the length of the vehicle to accommodate the needs of occupants of different sizes and needs. Most of the headrests in the prior art move relative to the seat through mechanical transmission (such as gear transmission, lead screw transmission and the like), and the adopted mechanical transmission structure is complex and the production cost is high. And because all parts are rigidly connected, the energy absorption effect is poor during collision, and the comfort of passengers is affected. In addition, the driving motor needs to be arranged close to the upper part of the seat by adopting mechanical transmission, so that the NVH performance is poor, and the performance of the vehicle is influenced.

Disclosure of Invention

In view of this, the present invention is directed to a headrest for a vehicle seat, which simplifies the overall structure and improves the use effect.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

the utility model provides a car seat headrest, includes the headrest pole, with the fixed part of headrest pole relatively fixed setting, still includes:

the headrest unit comprises a front headrest and a sliding connection mechanism for fixedly supporting the front headrest; the sliding connection mechanism is connected on the fixing part in a sliding mode so as to form sliding of the headrest relative to the fixing part in the length direction of the vehicle;

an airbag unit disposed between the front headrest and the fixing portion to apply an expansion force to the front headrest during inflation so that the front headrest has a sliding movement away from the fixing portion;

an elastic restoring unit acting on the headrest unit to apply an elastic restoring force to the headrest unit during deflation of the air bag unit.

Further, the sliding connection mechanism comprises an insertion rod which is inserted on the fixing part in a sliding mode.

Furthermore, the two insertion rods are arranged in parallel.

Furthermore, the sliding connection mechanism comprises a front support fixedly connected with the insertion rod, and the front support forms a fixed support of the front headrest.

Further, a cavity is formed inside the fixing part; the elastic recovery unit comprises a spring sleeved on the insertion rod and a limiting cap fixedly connected to the free end of the insertion rod inserted into the cavity, and the spring is limited between the inner wall of the cavity and the limiting cap.

Furthermore, the limiting cap is clamped on the insertion rod.

Further, the airbag unit is fixed to the fixing portion.

Further, the gasbag unit includes the gasbag that links to each other with the air pump to and the mount pad that links firmly with the gasbag, the mount pad links firmly on the fixed part.

Furthermore, the fixing part is provided with a recessed embedded groove, and the mounting seat is embedded in the embedded groove.

Further, the air bag comprises at least two sub air bags which are overlapped and communicated with each other along the length direction of the vehicle.

Compared with the prior art, the automobile seat headrest has the following advantages:

according to the automobile seat headrest provided by the embodiment of the invention, the sliding connection mechanism is arranged between the front headrest and the fixed part, so that the front headrest can move along the length direction of a vehicle, the air bag unit is arranged between the front headrest and the fixed part, the air bag unit can push the front headrest to slide through inflation, and when the front headrest needs to return, the front headrest can return through the elastic recovery unit.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is an exploded view of an automotive seat headrest according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a state in which the front headrest and the rear headrest are separated according to the embodiment of the present invention;

FIG. 3 is a schematic structural view of a front headrest and a rear headrest of the present invention in an unseparated state;

FIG. 4 is a schematic diagram of a compressed spring according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a spring according to an embodiment of the present invention after being expanded;

description of reference numerals:

1-fixing part, 101-rear headrest, 1011-matching surface, 102-rear support, 1021-guiding hole, 1022-working surface, 1023-embedded groove, 2-headrest rod, 201-clamping groove, 3-front headrest, 4-buckle, 5-sliding connection mechanism, 501-front support, 502-insertion rod, 5021-clamping hole, 6-clamping arm, 601-clamping protrusion, 7-elastic recovery unit, 701-spring, 702-limit cap, 8-air bag unit, 801-air bag, 8011-air bag, 802-mounting seat, 9-air pump and 10-air pipe.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The embodiment relates to an automobile seat headrest, including the headrest pole, with the fixed part of headrest pole relatively fixed setting, this automobile seat headrest is still including the headrest unit that has preceding headrest and sliding connection mechanism, set up preceding headrest with it is right in the inflation in-process between the fixed part the inflation force is applyed to preceding headrest so that preceding headrest slides and keeps away from the gasbag unit of fixed part, and be used in on the headrest unit with in the gasbag unit gassing in-process, right the elasticity recovery unit of elasticity restoring force is applyed to the headrest unit. This car seat headrest is through utilizing the gasbag unit to aerify inflation and the front headrest of drive and the fixed part is kept away from the slip to when the gasbag unit gassing order the front headrest return through elasticity recovery unit, thereby can make the front headrest have better buffering effect when using.

Based on the above design concept, an exemplary structure of the headrest for the seat of the vehicle of the embodiment may be as shown in fig. 1 to 3, wherein the fixing portion 1 includes a rear headrest 101 fixedly connected to the headrest rod 2, a mating surface 1011 adapted to the front headrest 3 is formed on a side of the rear headrest 101 opposite to the front headrest 3, and a rear bracket 102 fixed to the rear headrest 101 via a buckle 4 and mated with a front bracket 501 described below is disposed on the mating surface 1011. In order to make the front headrest 3 slide relative to the rear headrest 101, the sliding connection mechanism 5 is attached to the front headrest 3 in the present embodiment, and is slidably disposed with the rear bracket 102 through the sliding connection mechanism 5 to perform the front-rear adjustment function of the front headrest 3.

In order to accommodate the sliding link mechanism 5 and the elastic restoring unit 7 described below, in the present embodiment, a cavity (not shown) is formed in the rear bracket 102, and a guide hole 1021 communicating with the cavity is provided in a side surface (for convenience of description, this side surface is referred to as a working surface 1022 in the present embodiment, and the same applies hereinafter) of the rear bracket 102 opposite to the front headrest 3, and the guide hole 1021 can form a sliding guide for the insertion rod 502 of the sliding link mechanism 5. Meanwhile, in order to facilitate the arrangement of the airbag unit 8 to be described later, the engagement groove 1023 recessed toward the inside of the rear bracket 102 is provided in the working surface 1022 described above in the present embodiment, and the engagement groove 1023 constitutes the engagement of the mounting seat 501 described later.

As shown in fig. 1, the sliding connecting mechanism 5 of the present embodiment includes a front bracket 501 that forms a fixed support for the front headrest 3, and an insertion rod 502 that is fixed to the front bracket 501 at one end and extends in the vehicle longitudinal direction, and the insertion rod 502 is slidably inserted into the rear bracket 102 through the guide hole 1021. Meanwhile, in order to prevent the insertion lever 502 from being disengaged from the guide hole 1021, a stopper cap 702 described below is attached to the other end of the insertion lever 502 (i.e., the free end of the insertion lever 502) with respect to the front bracket 501 in this embodiment. The limiting cap 702 is arranged in the cavity, and the outer diameter of the limiting cap is larger than the inner diameter of the guide hole 1021, so that the movement limitation of the insertion rod 702 can be realized. Meanwhile, in order to prevent the front bracket 501 from rotating relative to the rear bracket 102 during sliding and to ensure that the front bracket 501 slides more stably, the number of the inserting rods 502 in the present embodiment is at least two, and preferably two, spaced in the vehicle width direction.

In order to facilitate the assembly and disassembly, as shown in fig. 1, in this embodiment, the above-mentioned limiting cap 702 is fixedly connected to the insertion rod 502 by a detachable connector, the detachable connecting piece can adopt connecting modes such as screw connection, clamping connection and the like, in order to ensure the using effect, the detachable connecting piece adopts the clamping connection mode, the concrete structure of the clamping device can be shown in fig. 1, in this embodiment, two clamping arms 6 which are oppositely arranged and can elastically deform under stress are arranged on the end surface of the limiting cap 702, the free ends of the two engaging arms 6 are respectively provided with engaging projections 601, while the free end of the insertion rod 502 is formed with an insertion hole, not shown, into which the two engaging arms are inserted, and a clamping hole 5021 corresponding to the clamping protrusion 601 is arranged on the circumferential surface of the insertion rod 502, during assembly, the clamping arm 6 is inserted into the insertion hole, and the clamping protrusion 601 is clamped in the corresponding clamping hole 5021.

As shown in fig. 1, the elastic recovery unit 7 of the present embodiment includes an elastic member disposed in the cavity and the above-mentioned position-limiting cap 702, and the elastic member is confined between the inner wall of the cavity and the position-limiting cap 702. As shown in fig. 4, when the front headrest 3 is driven by the air bag unit 8 to move away from the rear bracket 102, the elastic member is compressed and deformed by the stop cap 702 to store energy, and when the air bag unit 8 is deflated, the spring releases elastic potential energy and drives the front headrest 3 to return (as shown in fig. 5). The elastic member in this embodiment may be a spring 701 sleeved on the insertion rod 502, and the elastic deformation stability of the spring can be ensured by sleeving the spring on the insertion rod 502, so as to ensure that the front headrest 3 slides more stably. Of course, in this embodiment, the elastic member may be configured as the spring 701, and may also be configured as another structure, for example, it may be a tension spring, in this case, when the front headrest 3 is away from the rear bracket 102, the tension spring is stretched to store elastic potential energy, and when the air bag unit 8 is deflated, the tension spring releases the elasticity to pull the front headrest 3.

As shown in fig. 1 in conjunction with fig. 4, the airbag unit 8 of the present embodiment includes an airbag 801 connected to an air pump 9, and the airbag 801 includes at least two sub-airbags 8011, preferably two sub-airbags 8011 that are stacked and arranged in communication along the vehicle length direction. In order to facilitate the installation of the airbag 801, in this embodiment, the mounting seat 802 is fixedly connected to the sub-airbag 8011 that is away from the front bracket 501, and the airbag 801 can be fixedly connected by fitting the mounting seat 802 into the fitting groove 1023. In this embodiment, the mounting seat 802 and the embedding groove 1023 are detachably connected, so that the passenger can replace the air bag unit conveniently, and the detachable connection can be a snap connection in this embodiment. In this embodiment, the sub-air bags 8011 are stacked to have a better energy absorbing effect when the vehicle collides, and to be matched with the elastic member to allow the front headrest 3 to slide more stably, and to balance the elastic force of the elastic member.

In order to ensure the expansion effect of the airbag 801 during inflation and also to facilitate the arrangement of the entire structure, only the sub-airbag 8011 that is away from the front frame 501 is communicated with the air tube 10 in this embodiment. Meanwhile, in order to reduce the occupied space of the air tube 10, a receiving cavity, not shown in the drawings, for receiving the air tube 10 therethrough is formed in the headrest rod 2 in this embodiment. When in use, the air tube 10 can be placed in the accommodating cavity, and the two ends of the air tube 10 are respectively connected with the sub-air bag 8011 and the air pump 9 after penetrating out. In addition, because the air pump 9 in this embodiment adopts the air tube 10 to communicate with the air bag 801, the position of the air pump 9 can be freely installed, so that the air pump does not need to be arranged on the upper part of the backrest, and the problem of overweight top of the backrest is avoided. Meanwhile, the air tube 10 in this embodiment may be made of a flexible tube, so that the driver can mount the air pump 9 at various positions on the vehicle.

The structure of the headrest rod 2 in this embodiment is shown in fig. 1, and the whole headrest rod is in a shape of a Chinese character 'tu', and the accommodating cavity is formed on one side wall. In this embodiment, the upper portion of the headrest rod 2 is fixedly connected to the rear bracket 102, and the two side walls of the lower portion thereof are slidably inserted into the backrest of the vehicle, so as to realize the movement of the headrest in the vehicle height direction. In this embodiment, a plurality of slots 201 are provided on the side wall of the headrest rod 2 at intervals in the vehicle height direction, and when the headrest rod 2 needs to be lifted, the slots 201 with different heights are matched with the guide sleeves on the backrest.

When the automobile seat headrest is used, the headrest can be lifted through lifting the headrest rod 2, when the headrest needs to be adjusted forwards, the front support 501 can be pushed to move forwards by pressing the switch button of the air pump 10 to charge the air bag 801, and the forward adjustment of the front headrest 3 can be realized, namely the state shown in fig. 2 and 4; when the headrest needs to be adjusted backward, pressing the switch button deflates the air bag 801, and the front headrest 3 returns to its original position under the pull of the spring, i.e., the state shown in fig. 3 and 5. In addition, the front headrest 3 is driven by the air bag 801 and the spring to move without step displacement, so that stepless adjustment of the front headrest 3 can be realized, and the comfort of passengers is improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides an automobile seat headrest, includes headrest pole (2), with fixed part (1) of headrest pole (2) relatively fixed setting, its characterized in that still includes:

the headrest unit comprises a front headrest (3) and a sliding connection mechanism (5) for fixedly supporting the front headrest (3); the sliding connection mechanism (5) is connected to the fixed part (1) in a sliding mode so as to form sliding of the front headrest (3) relative to the fixed part (1) in the length direction of the vehicle;

an airbag unit (8) disposed between the front headrest (3) and the fixed portion (1) to apply an expansion force to the front headrest (3) during inflation so that the front headrest (3) has a sliding movement away from the fixed portion (1);

an elastic restoring unit (7) acting on the headrest unit to apply an elastic restoring force to the headrest unit during deflation of the air bag unit.

2. The headrest for vehicle seats according to claim 1, characterized in that: the sliding connection mechanism (5) comprises an insertion rod (502) which is inserted on the fixed part (1) in a sliding manner.

3. The headrest for vehicle seats according to claim 2, characterized in that: the two insertion rods (502) are arranged in parallel.

4. The headrest for vehicle seats according to claim 2, characterized in that: the sliding connection mechanism (2) comprises a front support (501) fixedly connected with the plug-in rod (502), and the front support (501) forms a fixed support of the front headrest (3).

5. The headrest for vehicle seats according to claim 2, characterized in that: a cavity is formed in the fixing part (1); the elastic restoring unit (7) comprises a spring (701) sleeved on the plug rod and a limiting cap (702) fixedly connected to the free end of the plug rod (502) inserted into the cavity, and the spring (701) is limited between the inner wall of the cavity and the limiting cap (702).

6. The headrest for vehicle seats according to claim 5, characterized in that: the limiting cap (702) is clamped on the insertion rod (502).

7. The headrest for vehicle seats according to any one of claims 1 to 6, characterized in that: the airbag unit (8) is fixed to the fixing part (1).

8. The headrest for vehicle seats according to claim 7, characterized in that: the air bag unit (8) comprises an air bag (801) connected with the air pump (9) and a mounting seat (802) fixedly connected with the air bag (801), and the mounting seat (801) is fixedly connected to the fixing portion (1).

9. The headrest for vehicle seats according to claim 8, characterized in that: be equipped with recessed inlay groove (1023) that set up on fixed part (1), mount pad (802) inlay the dress in inlay groove (1023).

10. The headrest for vehicle seats according to claim 8, characterized in that: the airbag (801) comprises at least two sub-airbags (8011) which are overlapped and communicated with each other along the length direction of the vehicle.