CN104814823A - Height-adjustable neck nursing device of seat and adjusting method thereof - Google Patents
Height-adjustable neck nursing device of seat and adjusting method thereof Download PDFInfo
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- CN104814823A CN104814823A CN201510230536.7A CN201510230536A CN104814823A CN 104814823 A CN104814823 A CN 104814823A CN 201510230536 A CN201510230536 A CN 201510230536A CN 104814823 A CN104814823 A CN 104814823A
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- massage
- seat
- function part
- nursing device
- shoulder
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- 230000000474 nursing effect Effects 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 35
- 230000003028 elevating effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 239000002937 thermal insulation foam Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The invention discloses a height-adjustable neck nursing device of a seat and an adjusting method of the height-adjustable neck nursing device. A massaging device is arranged on a neck protection portion, a heating device is arranged inside a pillow portion, a height adjusting mechanism is arranged between an installation portion and a function portion, a guide mechanism which is used for guiding the function portion is further arranged in the installation portion, a telescopic supporting mechanism is further connected between the function portion and the seat, a shoulder massaging mechanism is arranged in a shoulder massaging portion, and a horizontal position adjusting mechanism is arranged between the shoulder massaging mechanism and the neck protection portion. According to the height-adjustable neck nursing device, the massaging device is used for massaging the neck, the height adjusting mechanism is matched with the guide mechanism and is used for adjusting the height of the function portion, the telescopic supporting mechanism is used for achieving the purposes that a gap cannot be generated between the function portion and the seat after height adjustment is accomplished, and the telescopic supporting mechanism arranged between the function portion and the seat can continue supporting the back below the neck, the shoulder massaging mechanism is used for massaging the shoulders, and the horizontal position adjusting mechanism can adjust the position of the shoulder massaging mechanism.
Description
Technical field
The present invention relates to neck nursing device technique field, more particularly, particularly a kind of adjustable height neck nursing device of seat and control method thereof.
Background technology
In prior art, neck nursing device generally all with seat integral type, seat on automobile and aircraft does not generally all have neck nursing device, and driver's frequent neck fatigue after long-duration driving, danger during driving is higher, needs massage to loosen rear certain interval of time to continue to drive again, and the passenger of seat aircraft is generally long-time is sitting on seat, can neck fatigue be caused, also need neck nursing device to come for physical relaxation, improve comfort level.
Summary of the invention
The first object of the present invention is to provide a kind of adjustable height neck nursing device that can freely be installed on automobile cab seat or aircraft seat.
The second object of the present invention is the control method providing a kind of adjustable height neck nursing device according to above-mentioned seat.
In order to reach above-mentioned first object, the technical solution used in the present invention is as follows:
A kind of adjustable height neck nursing device of seat, comprise function part, described function part outside is provided with the integument that flexible material makes, described function part comprises the medicated pillow portion on top and the rib portion of bottom, described rib portion is a sunk structure, comprise and the protecting rear cervical region and protect rear cervical region both sides described in being located at and outward extendingly protect side cervical region of medicated pillow portion one, and described shoulder Massage Department be installed on described in protect on the cervical region of side, described rib portion is provided with the massage machine for massaging neck, the inside in described medicated pillow portion is provided with heater, described function part is also provided with an installation portion, described function part is connected with outside seat by installation portion, and be provided with height adjustment mechanism between described installation portion and described function part, and the guiding mechanism be also provided with in described installation portion for guide function portion, also be connected with one scalable and the retractable support mechanism of collare can be supported between described function part and described seat, the both sides in described rib portion are also connected with shoulder Massage Department, shoulder massage mechanism is provided with in described shoulder Massage Department, and be provided with horizontal level governor motion between described shoulder massage mechanism and described rib portion.
Further, described massage machine comprises the circular arc massage wheels fixing head of the pair of parallel setting be arranged in described rib portion, be provided with multiple massage wheels between massage wheels fixing head described in two, described massage wheels is stretched out groove by massage wheels and is stretched out in outside described rib portion.
Further, described heater comprises the resistive heater being arranged at described medicated pillow portion, and described medicated pillow portion is connected with the inner space in described rib portion.
Further, described height adjustment mechanism comprises the lifting nut be located in described installation portion, and the elevating screw matched with described lifting nut, and one end of described elevating screw is connected with a motor, and described motor is installed in described function part.
Further, described motor is installed in a motor installation cavity, and the inner space of described motor installation cavity and described function part is sealed by heat insulation foam, and described motor installation cavity is connected with space outerpace by multiple air vent.
Further, described guiding mechanism comprises at least one pair of pilot hole be arranged in described installation portion, and described pilot hole symmetry be distributed in described height adjustment mechanism both sides, be equipped with a guide post in each described pilot hole, described guide post is connected with described function part.
Further, described retractable support mechanism comprises the outer slip casing be installed on bottom described function part, slip casing in one is provided with in described outer slip casing, described interior slip box bottom is connected with chair mounted frame, and be also provided with positive stop lug boss in described outer slip casing, be provided with the limited block matched with described positive stop lug boss in described interior slip casing.
Further, described shoulder massage mechanism comprises massage wheel, and described massage wheel is connected with a massage wheels motor, and it is outside that described massage wheels extend out to described shoulder Massage Department by the massage wheels mouth in shoulder Massage Department.
Further, described horizontal level governor motion comprises the screw mandrel installing plate be arranged in described shoulder Massage Department, described screw mandrel installing plate is equipped with translation screw mandrel, described translation screw mandrel is arranged with translation screw, and one end of described translation screw mandrel is also provided with a pan drive motor, described translation screw is fixedly connected with described massage wheels motor.
In order to reach above-mentioned second object, the technical solution used in the present invention is as follows:
According to a control method for the adjustable height neck nursing device of above-mentioned seat, comprise step:
S1, installation portion to be connected with seat;
S2, adjustment height adjustment mechanism make massage machine and user neck location adapt; Regulate horizontal level governor motion that shoulder massage mechanism and user shoulder position are adapted;
S3, unlatching massage machine and/or shoulder massage mechanism and/or heater start massage.
Compared with prior art, the invention has the advantages that: be connected with seat by function part by installation portion, the massage machine in function part is used for massaging for cervical region, improves comfort level, reduces tired; Height adjustment mechanism coordinates guiding mechanism for adjusting the height of function part, adapts to the crowd of differing heights, highly versatile; Retractable support mechanism is used for making after altitude mixture control, can not produce space between function part and seat, and the retractable support mechanism between function part and seat can continue the back position supporting below cervical region; Shoulder massage mechanism improves comfort level further for massaging shoulder, reduces fatigue; And horizontal level governor motion can regulate the position of shoulder massage mechanism to adapt to the crowd of different in width shoulder.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the adjustable height neck nursing device of seat of the present invention when installing on the seat;
Fig. 2 is the sectional view of A-A line in Fig. 1;
Fig. 3 is the structural scheme of mechanism of the adjustable height neck nursing device of figure seat;
Fig. 4 is the partial enlarged view at I place in Fig. 3;
Fig. 5 is the partial enlarged view at II place in Fig. 3;
Fig. 6 is the method flow diagram of the control method of the adjustable height neck nursing device of seat in the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
Consult shown in Fig. 1, the adjustable height neck nursing device of seat provided by the invention, comprise function part 1, function part 1 outside is provided with the integument that flexible material makes, function part 1 comprises the medicated pillow portion 11 on top and the rib portion 12 of bottom, rib portion 12 is provided with the massage machine 13 for massaging neck, the inside in medicated pillow portion 11 is provided with heater 14, function part 1 is also provided with an installation portion 2, function part 1 is connected with outside seat 4 by installation portion 2, and be provided with height adjustment mechanism 21 between installation portion 2 and function part 1, and the guiding mechanism 22 be also provided with in installation portion 2 for guide function portion 1, also be connected with one scalable and the retractable support mechanism 23 of collare can be supported between function part 1 and seat 4, the both sides in rib portion 12 are also connected with shoulder Massage Department 3, shoulder massage mechanism 31 is provided with in shoulder Massage Department 3, and be provided with horizontal level governor motion 32 between shoulder massage mechanism 31 and rib portion 12.Be connected with seat 4 by function part 1 by installation portion 2, the massage machine 13 in function part 1, for massaging for cervical region, improves comfort level, reduces tired; Height adjustment mechanism 21 coordinates guiding mechanism 22 for adjusting the height of function part 1, adapts to the crowd of differing heights, highly versatile; Retractable support mechanism 23, for making after altitude mixture control, can not produce space, and the retractable support mechanism 23 between function part 1 and seat 4 can continue the back position supporting below cervical region between function part 1 and seat 4; Shoulder massage mechanism 31 improves comfort level further for massaging shoulder, reduces fatigue; And horizontal level governor motion 32 can regulate the position of shoulder massage mechanism 31 to adapt to the crowd of different in width shoulder.By the seat on automobile or aircraft being installed the adjustable height neck nursing device of this seat, at driving fatigue or when being sitting in tired on seat for a long time, can massage for cervical region and shoulder, fatigue alleviating.
Consult shown in Fig. 2, rib portion 12 is a sunk structure, comprises and the protecting rear cervical region 121 and be located at and protect rear cervical region 121 both sides and outward extendingly protect side cervical region 122 of medicated pillow portion 11 one, and shoulder Massage Department 3 is installed on and protects on side cervical region 122.Protecting side cervical region 122 by arranging, can omnibearingly massage for cervical region, fatigue alleviating, raising comfort level.
Be provided with multiple massage wheels 132 between circular arc massage wheels fixing head 131, the two massage wheels fixing head 131 that massage machine 13 comprises the pair of parallel setting be arranged in rib portion 12, massage wheels 132 is stretched out groove 133 by massage wheels and is stretched out in outside rib portion 12.Cervical region and massage wheels friction is made, fatigue alleviating by twisting cervical region.This massage machine 13 also can drive massage wheels 132 to shake by vibration motor, is neck massaging.This massage wheels 132 can arrange multiple projection, use protruding to neck massaging, improve comfort level.
Heater 14 comprises the resistive heater 141 being arranged at medicated pillow portion 11, and medicated pillow portion 11 is connected with the inner space in rib portion 12.Resistive heater 141 heats inner space, medicated pillow portion 11, pass to head by the housing in medicated pillow portion 11, improve comfort level, and the air that resistive heater 141 heats also stretches out groove 133 by the massage wheels in rib portion 12 flows out, flow to cervical region, during massage, improve the comfort level of cervical region.
Height adjustment mechanism 21 comprises the lifting nut 211 be located in installation portion 2, and the elevating screw 212 matched with lifting nut 211, and one end of elevating screw 212 is connected with a motor 213, and motor 213 is installed in function part 1.Drive elevating screw 212 to rotate by motor 213 thus promote function part 1 moves, to adapt to the crowd of differing heights, this height adjustment mechanism also can be driven by the type of drive such as hydraulic lifting or rack-and-pinion.
Preferably, motor 213 is installed in a motor installation cavity 214, and motor installation cavity 214 is sealed by heat insulation foam 215 with the inner space of function part 1, and motor installation cavity 214 is connected with space outerpace by multiple air vent 216.Hot blast after heating for preventing heater 14 enters in motor 213, makes motor 213 overheated.And arrange air vent 216 to ventilate, facilitate motor 213 to lower the temperature.
Guiding mechanism 22 comprises at least one pair of pilot hole 221 be arranged in installation portion 2, and pilot hole 221 symmetry be distributed in height adjustment mechanism 21 both sides, be equipped with a guide post 222 in each pilot hole 221, guide post 222 is connected with function part 1.To be coordinated with guide post 222 by pilot hole 221 and lead, this body function is stablized, and structure is simple, also can use other guiding mechanism guiding of the prior art.
Consult shown in Fig. 3, Fig. 4, retractable support mechanism 23 comprises the outer slip casing 231 be installed on bottom function part 1, slip casing 232 in one is provided with in outer slip casing 231, be connected with chair mounted frame 233 bottom interior slip casing 232, and being also provided with positive stop lug boss 234 in outer slip casing 231, in interior slip casing, 232 are provided with the limited block 235 matched with positive stop lug boss 234.Coordinated with interior slip casing 232 by outer slip casing 231, gap is there will not be between function part and seat 4 when function part 1 up-down adjustment, interior slip casing 232 skids off the space between supplementary functions portion 1 and seat 4, and interior slip casing 232 and the surfacing of outer slip casing 231, be suitable as the supporting surface at back.This outer slip casing 231 preferred is the circular arc adapting to back shape with the surface of interior slip casing 232 and back contact, and when support back, comfort level is higher.This retractable support mechanism 23 also can use outside pair of slide as supporting the part at back, and the inner scissors mechanism that uses is as the parts of support skid and guiding.
Consult shown in Fig. 5, shoulder massage mechanism 31 comprises massage wheel 311, and massage wheel 311 is connected with a massage wheels motor 312, and it is outside that massage wheels 311 extend out to shoulder Massage Department 3 by the massage wheels mouth 313 in shoulder Massage Department 3.This massage wheels motor 312 can be electric rotating machine also can be vibration motor, by driving massage wheel 311 to rotate or vibration massage function shoulder, reducing tired, improving comfort level.Preferably, be also provided with a circle boss bottom this massage wheel 311, massage wheels mouth 313 is mounting hole, and the boss of circular ring type can prevent massage wheel 311 from coming off from massage wheels mouth 313.
Horizontal level governor motion 32 comprises the screw mandrel installing plate 321 be arranged in shoulder Massage Department 3, screw mandrel installing plate 321 is equipped with translation screw mandrel 322, translation screw mandrel 322 is arranged with translation screw 323, and one end of described translation screw mandrel 322 is also provided with a pan drive motor 324, translation screw 323 is fixedly connected with massage wheels motor 312.By driving pan drive motor 324 to drive translation screw mandrel 322 to rotate, drive translation screw 323 to move horizontally, thus control shoulder massage mechanism 31 move horizontally.
Consult shown in Fig. 6, the control method of a kind of adjustable height neck nursing device according to above-mentioned seat provided by the invention comprises step:
S1, installation portion 2 to be connected with seat 4;
S2, adjustment height adjustment mechanism 21 make massage machine 13 and user neck location adapt; Regulate horizontal level governor motion 32 that shoulder massage mechanism 31 and user shoulder position are adapted;
S3, unlatching massage machine 13 and/or shoulder massage mechanism 31 and/or heater 14 start massage.
The adjustable height neck nursing device of this seat is connected with automotive seat or aircraft seat by installation portion 2, after adjusting the position of massage machine 13 and shoulder massage mechanism 31 mechanism, can massage user, when massaging, can open separately in massage machine 13, shoulder massage mechanism 31, heater 14 one or several.
Although describe embodiments of the present invention by reference to the accompanying drawings; but patent owner can make various distortion or amendment within the scope of the appended claims; as long as be no more than the protection domain described by claim of the present invention, all should within protection scope of the present invention.
Claims (10)
1. the adjustable height neck nursing device of a seat, it is characterized in that: comprise function part (1), described function part (1) outside is provided with the integument that flexible material makes, described function part (1) comprises the medicated pillow portion (11) on top and the rib portion (12) of bottom, described rib portion (12) is a sunk structure, comprise and the protecting rear cervical region (121) and protect rear cervical region (121) both sides described in being located at and outward extendingly protect side cervical region (122) of medicated pillow portion (11) one, and described shoulder Massage Department (3) be installed on described in protect on side cervical region (122), described rib portion (12) is provided with the massage machine (13) for massaging neck, the inside of described medicated pillow portion (11) is provided with heater (14), described function part (1) is also provided with an installation portion (2), described function part (1) is connected with outside seat (4) by installation portion (2), and be provided with height adjustment mechanism (21) between described installation portion (2) and described function part (1), and the guiding mechanism (22) be also provided with in described installation portion (2) for guide function portion (1), also be connected with one scalable and the retractable support mechanism (23) of collare can be supported between described function part (1) and described seat (4), the both sides of described rib portion (12) are also connected with shoulder Massage Department (3), shoulder massage mechanism (31) is provided with in described shoulder Massage Department (3), and be provided with horizontal level governor motion (32) between described shoulder massage mechanism (31) and described rib portion (12).
2. the adjustable height neck nursing device of seat according to claim 1, it is characterized in that: described massage machine (13) comprises the circular arc massage wheels fixing head (131) of the pair of parallel setting be arranged in described rib portion (12), be provided with multiple massage wheels (132) between massage wheels fixing head (131) described in two, described massage wheels (132) is stretched out groove (133) by massage wheels and is stretched out in outside described rib portion (12).
3. the adjustable height neck nursing device of seat according to claim 1, it is characterized in that: described heater (14) comprises the resistive heater (141) being arranged at described medicated pillow portion (11), and described medicated pillow portion (11) is connected with the inner space of described rib portion (12).
4. the adjustable height neck nursing device of seat according to claim 1, it is characterized in that: described height adjustment mechanism (21) comprises the lifting nut (211) be located in described installation portion (2), and the elevating screw (212) to match with described lifting nut (211), one end of described elevating screw (212) is connected with a motor (213), and described motor (213) is installed in described function part (1).
5. the adjustable height neck nursing device of seat according to claim 4, it is characterized in that: described motor (213) is installed in a motor installation cavity (214), described motor installation cavity (214) is sealed by heat insulation foam (215) with the inner space of described function part (1), and described motor installation cavity (214) is connected with space outerpace by multiple air vent (216).
6. the adjustable height neck nursing device of seat according to claim 4, it is characterized in that: described guiding mechanism (22) comprises at least one pair of pilot hole (221) be arranged in described installation portion (2), and described pilot hole (221) symmetrical be distributed in described height adjustment mechanism (21) both sides, be equipped with a guide post (222) in each described pilot hole (221), described guide post (222) is connected with described function part (1).
7. the adjustable height neck nursing device of seat according to claim 1, it is characterized in that: described retractable support mechanism (23) comprises the outer slip casing (231) being installed on described function part (1) bottom, slip casing (232) in one is provided with in described outer slip casing (231), described interior slip casing (232) bottom is connected with chair mounted frame (233), and be also provided with positive stop lug boss (234) in described outer slip casing (231), the limited block (235) matched with described positive stop lug boss (234) is provided with in described interior slip casing (232).
8. the adjustable height neck nursing device of seat according to claim 1, it is characterized in that: described shoulder massage mechanism (31) comprises massage wheel (311), described massage wheel (311) is connected with a massage wheels motor (312), and it is outside that described massage wheels (311) extend out to described shoulder Massage Department (3) by the massage wheels mouth (313) in shoulder Massage Department (3).
9. the adjustable height neck nursing device of seat according to claim 1, it is characterized in that: described horizontal level governor motion (32) comprises the screw mandrel installing plate (321) be arranged on described shoulder Massage Department (3), described screw mandrel installing plate (321) is equipped with translation screw mandrel (322), described translation screw mandrel (322) is arranged with translation screw (323), and one end of described translation screw mandrel (322) is also provided with a pan drive motor (324), described translation screw (323) is fixedly connected with described massage wheels motor (312).
10. a control method for the adjustable height neck nursing device of seat according to claim 1, is characterized in that: comprise step:
S1, installation portion (2) to be connected with seat (4);
S2, adjustment height adjustment mechanism (21) make massage machine (13) and user neck location adapt; Regulate horizontal level governor motion (32) that shoulder massage mechanism (31) and user shoulder position are adapted;
S3, unlatching massage machine (13) and/or shoulder massage mechanism (31) and/or heater (14) start massage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510230536.7A CN104814823B (en) | 2015-05-07 | 2015-05-07 | Height-adjustable neck nursing device of seat and adjusting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510230536.7A CN104814823B (en) | 2015-05-07 | 2015-05-07 | Height-adjustable neck nursing device of seat and adjusting method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104814823A true CN104814823A (en) | 2015-08-05 |
| CN104814823B CN104814823B (en) | 2017-04-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510230536.7A Expired - Fee Related CN104814823B (en) | 2015-05-07 | 2015-05-07 | Height-adjustable neck nursing device of seat and adjusting method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104814823B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105522991A (en) * | 2015-12-29 | 2016-04-27 | 苏州尊鼎汽车座椅有限公司 | Overload protection system for automobile seat |
| CN110236878A (en) * | 2019-05-27 | 2019-09-17 | 于际芹 | A kind of Multifunction massage bed |
| CN110329516A (en) * | 2019-07-31 | 2019-10-15 | 苏州标图高级座椅有限公司 | A kind of aircraft seat with neck massaging function |
| CN112677847A (en) * | 2021-01-21 | 2021-04-20 | 诸城市锦翔汽车内饰有限公司 | Multi-angle adjusting device for headrest of automobile seat |
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| GB2182844B (en) * | 1985-06-21 | 1989-01-25 | Kevin C Malone | Sling chair |
| CN2121937U (en) * | 1991-11-19 | 1992-11-18 | 周彦 | Keep-fit chair |
| CN102210520A (en) * | 2010-04-01 | 2011-10-12 | 金元培 | Neck pillow having a hair insertion opening |
| KR20120132775A (en) * | 2011-05-30 | 2012-12-10 | 서은숙 | Massage device |
| CN202751566U (en) * | 2012-08-30 | 2013-02-27 | 厦门蒙发利科技（集团）股份有限公司 | Massager with adjustable neck massaging angles |
-
2015
- 2015-05-07 CN CN201510230536.7A patent/CN104814823B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2182844B (en) * | 1985-06-21 | 1989-01-25 | Kevin C Malone | Sling chair |
| CN2121937U (en) * | 1991-11-19 | 1992-11-18 | 周彦 | Keep-fit chair |
| CN102210520A (en) * | 2010-04-01 | 2011-10-12 | 金元培 | Neck pillow having a hair insertion opening |
| KR20120132775A (en) * | 2011-05-30 | 2012-12-10 | 서은숙 | Massage device |
| CN202751566U (en) * | 2012-08-30 | 2013-02-27 | 厦门蒙发利科技（集团）股份有限公司 | Massager with adjustable neck massaging angles |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105522991A (en) * | 2015-12-29 | 2016-04-27 | 苏州尊鼎汽车座椅有限公司 | Overload protection system for automobile seat |
| CN110236878A (en) * | 2019-05-27 | 2019-09-17 | 于际芹 | A kind of Multifunction massage bed |
| CN110236878B (en) * | 2019-05-27 | 2022-06-28 | 于际芹 | Multifunctional massage bed |
| CN110329516A (en) * | 2019-07-31 | 2019-10-15 | 苏州标图高级座椅有限公司 | A kind of aircraft seat with neck massaging function |
| CN112677847A (en) * | 2021-01-21 | 2021-04-20 | 诸城市锦翔汽车内饰有限公司 | Multi-angle adjusting device for headrest of automobile seat |
| CN112677847B (en) * | 2021-01-21 | 2022-03-01 | 诸城市锦翔汽车内饰有限公司 | Multi-angle adjusting device for headrest of automobile seat |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104814823B (en) | 2017-04-19 |
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Granted publication date: 20170419 |