CN105751933B - A kind of button-free four-way regulation headrest - Google Patents
A kind of button-free four-way regulation headrest Download PDFInfo
- Publication number
- CN105751933B CN105751933B CN201610217666.1A CN201610217666A CN105751933B CN 105751933 B CN105751933 B CN 105751933B CN 201610217666 A CN201610217666 A CN 201610217666A CN 105751933 B CN105751933 B CN 105751933B
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- CN
- China
- Prior art keywords
- plastics
- locating piece
- head rest
- rest body
- body working
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/80—Head-rests
- B60N2/806—Head-rests movable or adjustable
- B60N2/865—Head-rests movable or adjustable providing a fore-and-aft movement with respect to the occupant's head
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/80—Head-rests
- B60N2/806—Head-rests movable or adjustable
- B60N2/809—Head-rests movable or adjustable vertically slidable
- B60N2/829—Head-rests movable or adjustable vertically slidable characterised by their adjusting mechanisms, e.g. electric motors
Abstract
The present invention relates to a kind of regulation of button-free four-way to rest the head on, head rest body working of plastics left and right ends are vertically symmetrical to be provided with two poles, pole lower end is stretched out from front casing and rear casing bottom, in the middle part of head rest body working of plastics, boss both sides are symmetrically rotatablely equipped with front and rear locating piece, front and rear locating piece interlocks close to one end of boss with boss side surfaces, on rear side of pole top, uprighting spring is installed in head rest body working of plastics, alignment pin up and down is installed in the middle part of pole, upper and lower alignment pin passes through pole and uprighting spring, pole is provided with locating piece up and down at the side in the middle part of head rest body working of plastics, the upper end of upper and lower locating piece is rotatably installed on head rest body working of plastics, the lower end of upper and lower locating piece and pole side snapping, extension of the arrangement towards upper and lower alignment pin in the middle part of upper and lower locating piece, the other end of front and rear regulation extension spring is connected with front casing.The present invention has the characteristics that simple in construction, easy to operate, good appearance, production cost are low, assembling is simple.
Description
Technical field
The present invention relates to automotive headrest technical field, adjusts and rests the head on more particularly to a kind of button-free four-way.
Background technology
In general four-way regulation headrest needs to be unlocked headrest by button when using, and adjusts the position of headrest again afterwards
To put, packaging technology of this adjustment structure itself is complex, and production cost is high, simultaneously because headrest outside need arrangement button,
So that the outward appearance layout designs of headrest are extremely difficult, in order to solve the above-mentioned technical problem, a kind of knot of new regulation headrest is designed
Structure is necessary.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of button-free four-way regulation headrest, have simple in construction, behaviour
Make the features such as simplicity, good appearance, production cost are low, assembling is simple.
The technical solution adopted for the present invention to solve the technical problems is:A kind of button-free four-way regulation headrest, bag are provided
Front casing, head rest body working of plastics and pole are included, rear casing, front casing trailing flank middle part cloth are installed on rear side of described front casing
Boss is equipped with, the head rest body working of plastics slid back and forth is installed on boss, head rest body working of plastics left and right ends are vertically symmetrical
Two poles are installed, pole lower end is stretched out from front casing and rear casing bottom, described head rest body working of plastics middle part, boss
Both sides are symmetrically rotatablely equipped with front and rear locating piece, and front and rear locating piece interlocks close to one end of boss with boss side surfaces, described branch
Uprighting spring is installed on rear side of bar top, in head rest body working of plastics, alignment pin up and down is installed, up and down in the middle part of described pole
Alignment pin passes through pole and uprighting spring, and described pole is provided with fixed up and down at the side in the middle part of head rest body working of plastics
Position block, the upper end of described locating piece up and down are rotatably installed on head rest body working of plastics, the lower end of upper and lower locating piece and pole
Side snapping, in the middle part of upper and lower locating piece arrangement towards upper and lower alignment pin extension, described head rest body working of plastics upper end and
One end in the middle part of lower end with longitudinally mounted front and rear regulation extension spring is connected, the other end and front casing phase of front and rear regulation extension spring
Even, it is used for controlling the position of headrest by installing headrest bulk plastic part, by installation base, facilitates head rest body working of plastics edge
Boss to slide back and forth, be used for the vertical position of convenient regulation headrest by installing pole and upper and lower locating piece, by pole
Lower alignment pin is installed at middle part, is unlocked for convenient locating piece up and down, by installing uprighting spring, is replied for convenient headrest.
Supplemented as one kind to technical solutions according to the invention, described pole is in the middle part of head rest body working of plastics
Side at be disposed with reset steel wire vertically, described reset steel wire lower end is connected with the extension in the middle part of upper and lower locating piece, institute
Noise reduction cushion block corresponding with upper and lower alignment pin front end is installed at the top installation pole for the head rest body working of plastics stated, it is described
The upper end for resetting steel wire is bent towards noise reduction cushion block, is resetted the bending part of steel wire below noise reduction cushion block, is resetted steel by installing
Silk reduces noise caused by headrest reset for aiding in positioning block reset up and down, by installing noise reduction cushion block.
Supplemented as one kind to technical solutions according to the invention, the upper end of described locating piece up and down passes through up and down admittedly
Rationed marketing is connected with head rest body working of plastics, is provided between the lower end of described locating piece up and down and head rest body working of plastics up and down
Back-moving spring, upper and lower back-moving spring is disposed with arc mounting hole with head rest body working of plastics junction, by installing lower reset
Spring is used for controlling positioning block reset up and down, by arranging that arc mounting hole facilitates the installation of upper and lower back-moving spring.
Supplemented as one kind to technical solutions according to the invention, described front and rear locating piece is close to one end of boss
Snapping end, front and rear steady pin is disposed with vertically on the other end of front and rear locating piece, front and rear locating piece rotates around front and rear steady pin, institute
Front and rear back-moving spring is installed between the front and rear locating piece and head rest body working of plastics stated, by back-moving spring before and after installation, used
To control front and rear positioning block reset.
Supplemented as one kind to technical solutions according to the invention, on described front casing trailing flank, cloth around boss
Positioning guide column is equipped with, positioning guide column passes through head rest body working of plastics, by arranging that positioning guide column is used for playing guiding work
With, while facilitate head rest body working of plastics to position.
Supplemented as one kind to technical solutions according to the invention, close to head rest body working of plastics in the middle part of described pole
Side on be evenly arranged the neck that the lower end of several and upper and lower locating piece matches, described neck top is using tilting court
On opening, by arranging that neck is used for positioning the height of headrest.
Supplemented as one kind to technical solutions according to the invention, described boss is close to the both sides pair of rear casing one end
Title is disposed with spacing preiection, and described boss both sides have been arranged symmetrically several lines grooves, described front and rear locating piece and boss
The leading flank of the one end to interlock uses arc-shaped curved surface, and described boss has been arranged symmetrically close to the end both sides of front casing and arc
The arc-shaped limit boss that shape flexure plane matches, the restriction of headrest front and back position is facilitated by installing lines groove, limited by arranging
Position is raised to be unlocked for playing a part of locating piece before and after helping, by arranging that arc-shaped limit boss is used for aiding in front and rear reset bullet
Spring interlocks the lines groove of front and rear locating piece and boss.
Supplemented as one kind to technical solutions according to the invention, pass through buckle between described front casing and rear casing
It is connected, by using mode is snapped connection, greatly reduces the production cost of product, improves the production efficiency of product.
Supplement as one kind to technical solutions according to the invention, lead between described pole and head rest body working of plastics
It is spacing to cross the progress of working of plastics convex tendon, by arranging working of plastics convex tendon, pole is carried out spacing.
Supplemented as one kind to technical solutions according to the invention, suction is coated with outside described front casing and rear casing
Can material.
Beneficial effect
The present invention relates to a kind of regulation of button-free four-way to rest the head on, and is used for controlling headrest by installing headrest bulk plastic part
Position, by installation base, head rest body working of plastics is facilitated to be slid back and forth along boss, by installing pole and upper and lower locating piece
For the vertical position of convenient regulation headrest, by installing lower alignment pin in the middle part of pole, for convenient locating piece solution up and down
Lock, by installing uprighting spring, replied for convenient headrest, there is simple in construction, easy to operate, good appearance, production cost
It is low, assembling it is simple the features such as.
Brief description of the drawings
Fig. 1 is the front view of head rest body working of plastics of the present invention;
Fig. 2 is the partial enlarged drawing of working of plastics convex tendon of the present invention;
Fig. 3 is the topology view of front casing of the present invention;
Fig. 4 is the topology view of pole of the present invention;
Fig. 5 is the topology view of front and rear locating piece of the present invention;
Fig. 6 is topology view when head rest body working of plastics of the present invention loads front casing;
Fig. 7 is the topology view of front casing and rear casing of the present invention;
Fig. 8 is the topology view of the present invention.
Diagram:1st, energy-absorbing material, 2, pole, 3, front casing, 4, rear casing, 5, head rest body working of plastics, 6, positioning up and down
Block, 7, front and rear locating piece, 8, reset steel wire, 9, uprighting spring, 10, upper and lower alignment pin, 11, front and rear regulation extension spring, 12, multiple up and down
Position spring, 13, noise reduction cushion block, 14, neck, 15, front and rear back-moving spring, 16, front and rear steady pin, 17, positioning guide column, 18, convex
Platform, 19, spacing preiection, 20, lines groove, 21, arc-shaped limit boss, 22, arc mounting hole, 23, upper and lower steady pin, 24, plastics
Part convex tendon, 25, buckle.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than limitation the scope of the present invention.In addition, it is to be understood that after the content of the invention lectured has been read, people in the art
Member can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Scope.
Embodiments of the present invention are related to a kind of button-free four-way regulation headrest, as shown in Fig. 1-8, including front casing 3,
Head rest body working of plastics 5 and pole 2, the described rear side of front casing 3 are provided with rear casing 4, are disposed with the middle part of the trailing flank of front casing 3
Boss 18, the head rest body working of plastics 5 slid back and forth is installed on boss 18, the left and right ends of head rest body working of plastics 5 are right vertically
Title is provided with two poles 2, and the lower end of pole 2 is stretched out from front casing 3 and the bottom of rear casing 4, in described head rest body working of plastics 5
Portion, the both sides of boss 18 are symmetrically rotatablely equipped with front and rear locating piece 7, and front and rear locating piece 7 is close to one end of boss 18 and boss side surfaces
Interlock, uprighting spring 9 is installed on rear side of the described top of pole 2, in head rest body working of plastics 5, the described middle part of pole 2 is installed
There is upper and lower alignment pin 10, upper and lower alignment pin 10 passes through pole 2 and uprighting spring 9, and described pole 2 is close to head rest body working of plastics
Locating piece 6 up and down is installed, the upper end of described locating piece up and down 6 is rotatably installed in head rest body plastics at the side at 5 middle parts
On part 5, lower end and the side snapping of pole 2 of upper and lower locating piece 6, the upper and lower middle part of locating piece 6 are arranged towards upper and lower alignment pin 10
Extension, the one end of the described top and bottom of head rest body working of plastics 5 middle part with longitudinally mounted front and rear regulation extension spring 11
It is connected, the other end of front and rear regulation extension spring 11 is connected with front casing 3.
Described pole 2 is disposed with vertically at the side at the middle part of head rest body working of plastics 5 resets steel wire 8, described
The extension for resetting the lower end of steel wire 8 with the upper and lower middle part of locating piece 6 is connected, the top installation branch of described head rest body working of plastics 5
Noise reduction cushion block 13 corresponding with the upper and lower front end of alignment pin 10 is installed, the upper end of described reset steel wire 8 is towards noise reduction cushion block at bar
13 bendings, the bending part of steel wire 8 is resetted in the lower section of noise reduction cushion block 13.
The upper end of described locating piece up and down 6 is connected by upper and lower steady pin 23 with head rest body working of plastics 5, and described is upper
Back-moving spring 12 up and down, upper and lower back-moving spring 12 and headrest are installed between the lower end of lower locating piece 6 and head rest body working of plastics 5
The junction of bulk plastic part 5 is disposed with arc mounting hole 22.
Described front and rear locating piece 7 is snapping end close to one end of boss 18, vertical cloth on the other end of front and rear locating piece 7
Front and rear steady pin 16 is equipped with, front and rear locating piece 7 is rotated around front and rear steady pin 16, and described front and rear locating piece 7 is moulded with head rest body
Front and rear back-moving spring 15 is installed between materials and parts 5.
On the described trailing flank of front casing 3, positioning guide column 17 is disposed with around boss 18, positioning guide column 17 passes through head
Rest the head on bulk plastic part 5.
The described middle part of pole 2 has been evenly arranged several and positioning up and down on the side of head rest body working of plastics 5
The neck 14 that the lower end of block 6 matches, the described top of neck 14 is using the opening tilted upward.
Described boss 18 is arranged symmetrically limited location projection 19,18 liang of described boss close to the both sides of the one end of rear casing 4
Side has been arranged symmetrically several lines grooves 20, and the leading flank of one end that described front and rear locating piece 7 interlocks with boss 18 uses arc
Shape flexure plane, described boss 18 are arranged symmetrically the arc to match with arc-shaped curved surface close to the end both sides of front casing 3 and limited
Position boss 21.
It is connected between described front casing 3 and rear casing 4 by buckle 25.
Carried out between described pole 2 and head rest body working of plastics 5 by working of plastics convex tendon 24 spacing.
Energy-absorbing material 1 is coated with outside described front casing 3 and rear casing 4.
Embodiment
In actual production process, the neck 14 of pole 2 has three, when needing to adjust the height of headrest, by head
Pillow up moves, and headrest stay 2 is relative down, and one end of upper and lower locating piece 6 and the snapping of neck 14 can be along the sidepiece of pole 2
Sequentially enter in neck 14, and positioned by neck 14, because the top of neck 14 is using the opening tilted upward so that head
Pillow can be moved upwardly by, and each neck 14 is a gear of height of headrest, be resetted the height of headrest when needs
When, it is necessary first to by headrest regulation to gear during height highest, headrest is up moved afterwards, on headrest stay 2
Upper and lower alignment pin 10 can collide with the extension of upper and lower locating piece 6 so that and upper and lower locating piece 6 rotates around upper and lower steady pin 23,
The upper and lower lower end of locating piece 6 and the neck 14 of pole 2 depart from, and reset steel wire 8 as upper and lower locating piece 6 rotates and moves down so that head
Pillow regulation unblock up and down, afterwards because elastic force, headrest caused by the compression of the uprighting spring 9 on upper and lower alignment pin 10 can pass through
Elastic returning, alignment pin 10 moves up up and down when reset, promotes the upper end kink for resetting steel wire 8 and the lower end of noise reduction cushion block 13
Collide, reset steel wire 8 moves up pulling, and locating piece 6 rotates up and down, is positioned up and down in the elastic force by upper and lower back-moving spring 12
Block 6 completes locking with the snapping of neck 14.
When resting the head in the presence of compression spring, when head rest body working of plastics 5 can be moved down, in order to avoid resetting steel wire
8 and the collision of upper and lower alignment pin 10 and head rest body working of plastics 5 produce noise, so the installation of the upper end of head rest body working of plastics 5 with
Noise reduction cushion block 13 corresponding to the upper and lower front end of alignment pin 10.
When needing to adjust the front and back position of headrest, it is necessary to which headrest is moved along, the front and rear end of locating piece 7 when mobile
Portion mobile position on the both sides lines groove 20 of boss 18, when the position of headrest regulation to front end, again by head
Pillow is moved along so that front and rear locating piece 7 departs under the pressing of spacing preiection 19 with the both sides of boss 18, now front and rear locating piece
7 are in released state, by the elastic force of front and rear regulation extension spring 11, headrest are returned on script position, the end of front and rear locating piece 7
The arcwall face of arc-shaped limit boss 21 on portion's boss 18 is collided, in the presence of front and rear back-moving spring 15 front and rear locating piece 7 with
The both sides lines groove 20 of boss 18 buckle again.
Claims (8)
1. a kind of button-free four-way regulation headrest, including front casing (3), head rest body working of plastics (5) and pole (2), its feature
It is:Rear casing (4) is installed on rear side of described front casing (3), boss (18) is disposed with the middle part of front casing (3) trailing flank, it is convex
The head rest body working of plastics (5) slid back and forth, the vertically symmetrical peace in head rest body working of plastics (5) left and right ends are installed on platform (18)
Equipped with two poles (2), pole (2) lower end is stretched out from front casing (3) and rear casing (4) bottom, described head rest body plastics
Part (5) middle part, boss (18) both sides are symmetrically rotatablely equipped with front and rear locating piece (7), and front and rear locating piece (7) is close to boss (18)
One end is interlocked with boss side surfaces, and uprighting spring is provided with rear side of described pole (2) top, in head rest body working of plastics (5)
(9) alignment pin (10) above and below, being provided with the middle part of described pole (2), upper and lower alignment pin (10) pass through pole (2) and uprighting spring
(9), described pole (2) is provided with locating piece (6) up and down at the side in the middle part of head rest body working of plastics (5), described
The upper end of upper and lower locating piece (6) is rotatably installed on head rest body working of plastics (5), lower end and the pole (2) of upper and lower locating piece (6)
The extension towards upper and lower alignment pin (10), described head rest body working of plastics are arranged in side snapping, upper and lower locating piece (6) middle part
(5) one end in the middle part of top and bottom with longitudinally mounted front and rear regulation extension spring (11) is connected, front and rear regulation extension spring (11)
The other end is connected with front casing (3), is connected between described front casing (3) and rear casing (4) by buckle (25), described branch
It is spacing by working of plastics convex tendon (24) progress between bar (2) and head rest body working of plastics (5).
A kind of 2. button-free four-way regulation headrest according to claim 1, it is characterised in that:Described pole (2) is close
Be disposed with vertically at side in the middle part of head rest body working of plastics (5) reset steel wire (8), described reset steel wire (8) lower end with it is upper
Extension in the middle part of lower locating piece (6) is connected, be provided with the top of described head rest body working of plastics (5) installation pole with it is upper
Noise reduction cushion block (13) corresponding to lower alignment pin (10) front end, the upper end of described reset steel wire (8) are bent towards noise reduction cushion block (13),
The bending part of steel wire (8) is resetted below noise reduction cushion block (13).
A kind of 3. button-free four-way regulation headrest according to claim 1, it is characterised in that:Described locating piece up and down
(6) upper end is connected by upper and lower steady pin (23) with head rest body working of plastics (5), the lower end of described locating piece up and down (6)
Back-moving spring (12) up and down, upper and lower back-moving spring (12) and head rest body plastics are installed between head rest body working of plastics (5)
Part (5) junction is disposed with arc mounting hole (22).
A kind of 4. button-free four-way regulation headrest according to claim 1, it is characterised in that:Described front and rear locating piece
(7) it is snapping end close to one end of boss (18), front and rear steady pin is disposed with vertically on the other end of front and rear locating piece (7)
(16), front and rear locating piece (7) rotates around front and rear steady pin (16), described front and rear locating piece (7) and head rest body working of plastics (5)
Between front and rear back-moving spring (15) is installed.
A kind of 5. button-free four-way regulation headrest according to claim 1, it is characterised in that:After described front casing (3)
Positioning guide column (17) is disposed with side, around boss (18), positioning guide column (17) passes through head rest body working of plastics (5).
A kind of 6. button-free four-way regulation headrest according to claim 1, it is characterised in that:In the middle part of described pole (2)
The neck that the lower end of several and upper and lower locating piece (6) matches is evenly arranged on the side of head rest body working of plastics (5)
(14), described neck (14) top is using the opening tilted upward.
A kind of 7. button-free four-way regulation headrest according to claim 1, it is characterised in that:Described boss (18) is close
The both sides of rear casing (4) one end are arranged symmetrically limited location projection (19), and described boss (18) both sides have been arranged symmetrically several
Lines groove (20), the leading flank of one end that described front and rear locating piece (7) interlocks with boss (18) uses arc-shaped curved surface, described
Boss (18) close to front casing (3) end both sides be arranged symmetrically with arc-shaped curved surface match arc-shaped limit boss
(21)。
A kind of 8. button-free four-way regulation headrest according to claim 1, it is characterised in that:Described front casing (3) and
Energy-absorbing material (1) is coated with outside rear casing (4).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610217666.1A CN105751933B (en) | 2016-04-07 | 2016-04-07 | A kind of button-free four-way regulation headrest |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201610217666.1A CN105751933B (en) | 2016-04-07 | 2016-04-07 | A kind of button-free four-way regulation headrest |
Publications (2)
Publication Number | Publication Date |
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CN105751933A CN105751933A (en) | 2016-07-13 |
CN105751933B true CN105751933B (en) | 2018-04-03 |
Family
ID=56334565
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201610217666.1A Active CN105751933B (en) | 2016-04-07 | 2016-04-07 | A kind of button-free four-way regulation headrest |
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CN (1) | CN105751933B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106828228B (en) * | 2016-12-21 | 2023-08-22 | 宁波继峰汽车零部件股份有限公司 | Four-way headrest capable of being adjusted in forward and backward movement mode |
DE102017104761B4 (en) * | 2017-03-07 | 2022-09-22 | Faurecia Autositze Gmbh | Adjustment device for a headrest of a vehicle seat and vehicle seat with the adjustment device |
CN107822365B (en) * | 2017-09-27 | 2022-09-06 | 浙江正梦休闲用品有限公司 | Retractable and adjustable headrest |
Citations (4)
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US6056364A (en) * | 1997-01-14 | 2000-05-02 | Gestind-M.B. "Manifattura Di Brusolo" S.P.A. | Headrest for motor-vehicle seats |
CN201856675U (en) * | 2010-09-10 | 2011-06-08 | 德清舒华泡沫座椅有限公司 | Lifting and locking structure of seat headrest |
CN104890547A (en) * | 2015-06-08 | 2015-09-09 | 北汽福田汽车股份有限公司 | Vehicle, vehicle seat, and seat headrest with vehicle safety hammer |
CN205632203U (en) * | 2016-04-07 | 2016-10-12 | 宁波继峰汽车零部件股份有限公司 | There is not button four -direction adjustment headrest |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007048151B3 (en) * | 2007-09-04 | 2009-01-22 | Lear Corporation, Southfield | Seat e.g. front seat, for e.g. car, has locking mechanism with spindle having eccentric drive that works together with one ratchet such that release device rotates spindle and moves ratchet from connection with other ratchet |
-
2016
- 2016-04-07 CN CN201610217666.1A patent/CN105751933B/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6056364A (en) * | 1997-01-14 | 2000-05-02 | Gestind-M.B. "Manifattura Di Brusolo" S.P.A. | Headrest for motor-vehicle seats |
CN201856675U (en) * | 2010-09-10 | 2011-06-08 | 德清舒华泡沫座椅有限公司 | Lifting and locking structure of seat headrest |
CN104890547A (en) * | 2015-06-08 | 2015-09-09 | 北汽福田汽车股份有限公司 | Vehicle, vehicle seat, and seat headrest with vehicle safety hammer |
CN205632203U (en) * | 2016-04-07 | 2016-10-12 | 宁波继峰汽车零部件股份有限公司 | There is not button four -direction adjustment headrest |
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CN105751933A (en) | 2016-07-13 |
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