CN221137795U

CN221137795U - Seat headrest

Info

Publication number: CN221137795U
Application number: CN202322547920.2U
Authority: CN
Inventors: 胡忠仁; 邓新元; 黎清茂; 张世荣
Original assignee: Anduto Chongqing Automotive Parts Co ltd
Current assignee: Anduto Chongqing Automotive Parts Co ltd
Priority date: 2023-09-19
Filing date: 2023-09-19
Publication date: 2024-06-14
Anticipated expiration: 2033-09-19

Abstract

The utility model discloses a seat headrest, which comprises a base; a support assembly rotatably mounted on the base, the support assembly being positioned at a lower-middle section of the support assembly with respect to a rotation center line of the base rotation; and the rotary driving assembly is used for driving the supporting assembly to rotate. The beneficial effects of the utility model are as follows: the rotary driving assembly drives the supporting assembly to rotate, and the upper part of the supporting assembly can move forwards and backwards in an inclined deflection mode, so that the headrest X can be adjusted forwards and backwards. By adopting the mode to execute the X-direction adjustment of the headrest, the movement process is nonlinear forward and backward movement, and a certain angle deflection is attached to the forward and backward movement of the upper part of the headrest, so that the head of a human body can be matched with the forward and backward swinging gesture, the ergonomics are met, and the comfort of the X-direction adjustment of the headrest is obviously improved.

Description

Seat headrest

Technical Field

The utility model relates to an automobile seat comfort accessory, in particular to a seat headrest.

Background

The headrest is a functional accessory installed on the top of the backrest of the seat, and plays an extremely important role in guaranteeing the safety and the comfort of passengers. In order to adapt to passengers with different sizes, the existing headrest can be adjusted in the height and front-back directions, namely four headrests which are called in the industry.

In the prior art, the adjusting mechanisms for performing the four headrest heights and the front-rear movements are generally a rack-and-pinion transmission structure and a screw motor linear driving mechanism. When the X moves forwards and backwards, the headrest is controlled by a gear rack or screw motor to move in an absolute straight line in a reciprocating way. In the process of moving the head of the human body back and forth, the cervical vertebra position is usually taken as a fulcrum, and the front-back deflection is attached in the process of moving the head of the human body back and forth, so that the headrest X is driven to move back and forth by adopting a traditional mode, and the front-back deflection of the head of the human body can not be completely supported by referring to the ergonomics, so that the support comfort has room for further improvement.

Disclosure of utility model

In view of the above, the present utility model provides a seat headrest for improving the support comfort of the headrest for fore-and-aft adjustment.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

A seat headrest, which is characterized by comprising:

A base;

a support assembly rotatably mounted on the base, the support assembly being positioned at a lower-middle section of the support assembly with respect to a rotation center line of the base rotation; and

And the rotary driving assembly is used for driving the supporting assembly to rotate.

Preferably, the rotary driving assembly comprises a first part fixedly mounted on the base, a second part rotatably mounted on the supporting assembly and a first motor for driving the second part to rotate, the supporting assembly is rotatably sleeved on the first part through a supporting shaft, and the first part and the second part are respectively provided with a tooth part meshed with each other.

Preferably, the base is provided with two groups of lugs extending upwards, the inner sides of the two groups of lugs, which are opposite to each other, are fixedly provided with one first component respectively, the supporting component is provided with a skeleton plate, the lower part of the skeleton plate is provided with two groups of vertical supporting sheets extending backwards, the supporting shaft is fixedly arranged on the two groups of vertical supporting sheets in a penetrating way, and two ends of the supporting shaft are respectively rotatably supported in the two first components; the first motor is in power connection with a first rotating shaft, the first rotating shaft is rotatably arranged on the two groups of vertical supporting pieces in a penetrating mode, and two ends of the first rotating shaft are fixedly sleeved with the second parts respectively.

Preferably, the first component and the second component are gears, wherein a rectangular positioning block is arranged at the axial outer end of the first component, and positioning grooves matched with the rectangular positioning block are formed in the supporting lugs.

Preferably, the support assembly comprises a support main body and a headrest housing sleeved on the front side of the support main body in a sliding manner along the height direction, and a lifting driving assembly is arranged between the headrest housing and the support main body and used for driving the headrest housing to slide up and down relative to the support main body.

Preferably, the support main part both sides are provided with the spout along vertical direction, and one side of spout is equipped with dodges the breach, headrest casing both sides are equipped with the traveller that extends along vertical direction, and the traveller slidable mounting is in about the one-to-one in the spout, one side of traveller is equipped with the rack, lift drive assembly is including rotating the second pivot of assembly on the support main part, fixing the gear at second pivot both ends and the second motor of drive second pivot pivoted, the gear is located dodges the breach, and with the rack engagement.

Preferably, the upper portion of the chute is exposed to the top of the support body in an open posture.

Preferably, the rear part of the headrest shell is provided with two groups of side baffles positioned at the side part of the supporting main body, the rack and the sliding column are integrally formed at the inner side of the side baffles, and the side baffles are provided with operation holes at positions corresponding to the gears.

Preferably, the two ends of the headrest shell are provided with side wing parts which are bent obliquely forwards, the support assembly further comprises a rear cover which is covered on the rear side of the headrest shell, and the front end edge of the rear cover is attached to the rear end edge of the side wing parts.

Preferably, a motor bracket extending backwards is arranged at the rear side of the framework plate, and the first motor is fixed on the motor bracket.

Compared with the prior art, the utility model has the beneficial effects that:

1. By adopting the seat headrest provided by the utility model, the rotary driving assembly drives the supporting assembly to rotate, and the upper part of the supporting assembly can move forwards and backwards in an inclined deflection mode, so that the headrest X can be adjusted forwards and backwards. By adopting the mode to execute the X-direction adjustment of the headrest, the movement process is nonlinear forward and backward movement, and a certain angle deflection is attached to the forward and backward movement of the upper part of the headrest, so that the head of a human body can be matched with the forward and backward swinging gesture, the ergonomics are met, and the comfort of the X-direction adjustment of the headrest is obviously improved.

2. By adopting the seat headrest provided by the utility model, the lifting driving assembly drives the headrest shell to slide up and down relative to the supporting main body, so that the height of the headrest can be adjusted, and the headrest is integrated with a Z-direction lifting function.

Drawings

FIG. 1 is a schematic view of a seat headrest;

FIG. 2 is an exploded view of the headrest of the seat;

FIG. 3 is a cross-sectional view of a headrest of a seat;

FIG. 4 is a schematic view of the internal construction of the headrest of the seat;

fig. 5 is a partial schematic view showing the internal constitution of the headrest of the seat (the support assembly 2 retains only the grill plate 2 a).

Detailed Description

The utility model is further described below with reference to examples and figures.

As shown in fig. 1, 2 and 3, a seat headrest mainly relates to a base 1, a support assembly 2, a rotation driving assembly 3 and a lift driving assembly 4. Wherein, the base 1 is a metal part, and two headrest rods 1b are connected to the base 1, and the two headrest rods 1b of the base 1 can be installed on the top of the seat back. The support component 2 is the part of the headrest responsible for supporting the head, the support component 2 is rotatably assembled on the base 1 through the support shaft a, and the rotary driving component 3 is used for driving the support component 2 to rotate by taking the support shaft a as a rotation center. The support shaft a is located in the middle lower section region of the support assembly 2, that is, the rotation center line of the support assembly 2 rotating with respect to the base 1 is located in the middle lower section of the support assembly 2. Based on this, the headrest X is adjusted forward and backward as follows: the rotation driving assembly 3 drives the support assembly 2 to rotate, and the upper part of the support assembly 2 moves back and forth in a tilting and swinging mode, so that the back and forth support distance of the headrest is adjusted. By adopting the mode to execute the forward and backward adjustment of the headrest X, the motion process is nonlinear forward and backward movement, and a certain angle deflection is attached in the forward and backward movement of the upper part of the headrest, so that the headrest X can be matched with the forward and backward swinging gesture of the head of a human body, accords with the ergonomics, and obviously improves the comfort of the adjustment of the headrest X.

In the present embodiment, the middle lower section area of the support member 2 where the support shaft a is located may be specifically any of a middle position, a lower end position, and a position between the middle and lower ends.

Referring to fig. 2, the support assembly 2 of the present embodiment includes a support main 2b, a skeletal plate 2a located inside the support main 2b, a headrest housing 2c located at the front side of the support main 2b, and a rear cover 2d located at the rear side of the support main 2 b.

Referring to fig. 4 and 5, the rotary driving assembly 3 includes a first member 3a fixedly mounted on the base 1, a second member 3b rotatably mounted on the supporting assembly 2, and a first motor 3c capable of driving the second member 3b to rotate, wherein a supporting shaft a is fixedly disposed at the middle lower portion of the supporting assembly 2, the supporting shaft a is rotatably sleeved on the first member 3a, and the first member 3a and the second member 3b are respectively provided with teeth engaged with each other. Based on this, when the first motor 3c drives the second member 3b to rotate, under the action of the meshing of the teeth of the first member 3a and the second member 3b, the second member 3b rotates around the tooth profile of the first member 3a, that is, the support assembly 2 rotates around the support shaft a as the rotation center, so that the forward and backward adjustment of the X of the headrest belt yaw motion is realized. The first part 3a and the second part 3b may be curved toothed plates or cylindrical gears.

In this embodiment, the number of the first parts 3a and the second parts 3b is two, for convenience in product assembly, please refer to fig. 4 and 5, the base 1 has two sets of lugs 1a extending upward, and the two first parts 3a are fixedly assembled on opposite inner sides of the two sets of lugs 1 a. The lower part of the framework plate 2a of the supporting assembly 2 is provided with two groups of vertical supporting pieces 2a1 extending backwards, the two groups of vertical supporting pieces 2a1 are symmetrically arranged between the two groups of supporting lugs 1a, a supporting shaft a is fixedly arranged on the two groups of vertical supporting pieces 2a1 in a penetrating mode, two first parts 3a are cylindrical gears and are provided with central through holes, and two ends of the supporting shaft a are respectively and rotatably supported in the central through holes of the two cylindrical gears. The rear ends of the two groups of vertical supporting pieces 2a1 are further rotatably provided with a first rotating shaft 3d in a penetrating mode, the two second parts 3b are cylindrical gears, and the two cylindrical gears are fixedly assembled at two ends of the first rotating shaft 3d respectively. The rear side of the skeleton plate 2a is also provided with a motor bracket 2e extending backwards, a first motor 3c is fixed on the motor bracket 2e, the first motor 3c is an integrated speed reduction motor, and a power output part of the speed reduction motor is in transmission connection with a first rotating shaft 3d in a sleeved mode.

By adopting the specific design, the integral gear motor works to drive the headrest to smoothly perform X forward and backward adjustment, and the first component 3a and the second component 3b are just mounted in the space enclosed by the support lugs 1a and the vertical support plates 2a1, so that the headrest has the advantages of transmission reliability, stable movement, low noise, high structural compactness and the like. Meanwhile, as can be seen by combining with fig. 2, the supporting main body 2b is composed of a first half cover d and a second half cover c which are positioned on the front side and the rear side, and the first half cover d and the second half cover c can independently wrap the rotary driving assembly 3 and the lifting driving assembly 4 inside the headrest supporting assembly 2, so that the headrest supporting assembly has better structural integrity and compactness after being assembled.

In this embodiment, referring to fig. 5, a rectangular positioning block 3a1 is disposed at an axially outer end of the first component 3a, a positioning groove 1a1 matched with the rectangular positioning block 3a1 is disposed on the support lug 1a, and the rectangular positioning block 3a1 is embedded into the positioning groove 1a1 to realize the fixed assembly of the first component 3 a.

As shown in fig. 2 and 3, the headrest housing 2c is slidably mounted on the front side of the support body 2b along the height direction, and the lifting driving assembly 4 is used for driving the headrest housing 2c to slide up and down relative to the support body 2b, so that the headrest has a Z-direction height adjusting function.

Further, as can be seen from fig. 2, two sides of the supporting main body 2b are provided with sliding grooves 2b1 extending in the vertical direction, one side of the sliding grooves 2b1 is provided with an avoidance gap 2b2, two sides of the headrest housing 2c are provided with sliding columns 2c1 extending in the vertical direction, the sliding columns 2c1 are correspondingly arranged in the sliding grooves 2b1 on two sides of the supporting main body 2b in a vertically sliding manner, and racks 2c2 are arranged on the front side of the sliding columns 2c 1. As can be seen from fig. 5, the lifting driving assembly 4 includes a second rotating shaft 4a rotatably assembled on the frame plate 2a, gears 4b fixed at two ends of the second rotating shaft 4a, and a second motor 4c for driving the second rotating shaft 4a to rotate, wherein the gears 4b are meshed with the racks 2c2 and are located in the avoidance gaps 2b 2. Based on this, the second motor 4c drives the gear 4b to rotate, and the headrest housing 2c can slide up and down with respect to the support body 2b by the meshing action of the gear 4b and the rack 2c2, thereby realizing the adjustment of the height of the headrest in the Z direction.

As can be seen from fig. 2, the upper portion of the sliding chute 2b1 is exposed to the top of the supporting body 2b in an open posture, the avoidance gap 2b2 is located at the front side of the sliding chute 2b1 near the top, two sets of side baffles 2c3 located at the side of the supporting body 2b are provided at the rear of the headrest housing 2c, the rack 2c2 and the sliding column 2c1 are integrally formed at the inner side of the side baffles 2c3, and the side baffles 2c3 are provided with operation holes 2c4 at positions corresponding to the gears 4 b. By means of the design, after the sliding column 2c1 of the headrest housing 2c is inserted into the sliding groove 2b1 from top to bottom, the gear 4b is installed into the avoidance gap 2b2 from the operation hole 2c4, and therefore assembly can be achieved, and the headrest housing has the technical advantage of being convenient to install.

As shown in fig. 1, the headrest housing 2c has wing portions 2c5 at both ends thereof, which are bent obliquely symmetrically forward, and the wing portions 2c5 can enhance the headrest support comfort. The rear cover 2d is covered and buckled on the rear side of the headrest housing 2c, and the front end edge of the rear cover 2d is matched with the rear end edge of the side wing part 2c5, so that all internal components of the headrest are wrapped, and the headrest has better compactness and appearance quality.

Finally, it should be noted that the above description is only a preferred embodiment of the present utility model, and that many similar changes can be made by those skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. A seat headrest, comprising:

A base (1);

a support assembly (2) rotatably mounted on the base (1), a rotation center line of the support assembly (2) rotating relative to the base (1) being located at a middle lower section of the support assembly (2); and

And the rotary driving assembly (3) is used for driving the supporting assembly (2) to rotate.

2. The seat headrest according to claim 1, wherein: the rotary driving assembly (3) comprises a first component (3 a) fixedly installed on the base (1), a second component (3 b) rotatably installed on the supporting assembly (2) and a first motor (3 c) for driving the second component (3 b) to rotate, the supporting assembly (2) is rotatably sleeved on the first component (3 a) through a supporting shaft (a), and the first component (3 a) and the second component (3 b) are respectively provided with a tooth part which is meshed with each other.

3. The seat headrest as claimed in claim 2, wherein: the base (1) is provided with two groups of upward extending lugs (1 a), the inner sides of the two groups of lugs (1 a) opposite to each other are fixedly provided with one first component (3 a) respectively, the supporting component (2) is provided with a skeleton plate (2 a), the lower part of the skeleton plate (2 a) is provided with two groups of backward extending vertical supporting sheets (2 a 1), the supporting shaft (a) is fixedly arranged on the two groups of vertical supporting sheets (2 a 1) in a penetrating way, and two ends of the supporting shaft (a) are respectively rotatably supported in the two first components (3 a); the first motor (3 c) is in power connection with a first rotating shaft (3 d), the first rotating shaft (3 d) is rotatably arranged on the two groups of vertical supporting pieces (2 a 1) in a penetrating mode, and two ends of the first rotating shaft (3 d) are fixedly sleeved with the second parts (3 b) respectively.

4. A seat headrest as claimed in claim 3 wherein: the first component (3 a) and the second component (3 b) are gears, wherein a rectangular positioning block (3 a 1) is arranged at the outer end of the first component (3 a) in the axial direction, and positioning grooves (1 a 1) matched with the rectangular positioning block (3 a 1) are formed in the supporting lugs (1 a).

5. The seat headrest according to claim 1, wherein: the support assembly (2) comprises a support main body (2 b) and a headrest housing (2 c) which is sleeved on the front side of the support main body (2 b) in a sliding manner along the height direction, and a lifting driving assembly (4) is arranged between the headrest housing (2 c) and the support main body (2 b) and used for driving the headrest housing (2 c) to slide up and down relative to the support main body (2 b).

6. The seat headrest as claimed in claim 5, wherein: the utility model discloses a headrest is characterized by comprising a support main body (2 b), a headrest shell (2 c) and a lifting driving assembly (4), wherein the support main body (2 b) is provided with a chute (2 b 1) along the vertical direction, one side of the chute (2 b 1) is provided with an avoidance gap (2 b 2), two sides of the headrest shell (2 c) are provided with a slide column (2 c 1) extending along the vertical direction, the slide column (2 c 1) is vertically and slidably installed in the chute (2 b 1) in a one-to-one correspondence manner, one side of the slide column (2 c 1) is provided with a rack (2 c 2), and the lifting driving assembly (4) comprises a second rotating shaft (4 a) rotationally assembled on the support main body (2 b), gears (4 b) fixed at two ends of the second rotating shaft (4 a) and a second motor (4 c) for driving the second rotating shaft (4 a), and the gears (4 b) are located in the avoidance gap (2 b 2) and meshed with the rack (2 c 2).

7. The seat headrest as claimed in claim 6, wherein: the upper part of the sliding groove (2 b 1) is exposed at the top of the supporting main body (2 b) in an open posture.

8. The seat headrest as claimed in claim 6, wherein: the headrest is characterized in that two groups of side baffles (2 c 3) positioned on the side of the supporting main body (2 b) are arranged at the rear part of the headrest shell (2 c), the rack (2 c 2) and the sliding column (2 c 1) are integrally formed on the inner side of the side baffles (2 c 3), and the side baffles (2 c 3) are provided with operation holes (2 c 4) at positions corresponding to the gears (4 b).

9. The seat headrest as claimed in claim 6, wherein: the headrest is characterized in that two ends of the headrest shell (2 c) are provided with side wing parts (2 c 5) which are bent obliquely forwards, the support assembly (2) further comprises a rear cover (2 d) covered on the rear side of the headrest shell (2 c), and the front end edge of the rear cover (2 d) is attached to the rear end edge of the side wing parts (2 c 5).

10. A seat headrest as claimed in claim 3 wherein: the motor support (2 e) extending backwards is arranged on the rear side of the framework plate (2 a), and the first motor (3 c) is fixed on the motor support (2 e).