CN110693223A - Head and neck support structure applied to sofa seat - Google Patents

Head and neck support structure applied to sofa seat Download PDF

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Publication number
CN110693223A
CN110693223A CN201910964037.9A CN201910964037A CN110693223A CN 110693223 A CN110693223 A CN 110693223A CN 201910964037 A CN201910964037 A CN 201910964037A CN 110693223 A CN110693223 A CN 110693223A
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China
Prior art keywords
block
plate
close
fixed plate
neck
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Granted
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CN201910964037.9A
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Chinese (zh)
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CN110693223B (en
Inventor
冯元峰
屠家会
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Kuka Home Co Ltd
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Kuka Home Co Ltd
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/36Support for the head or the back
    • A47C7/38Support for the head or the back for the head
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C17/00Sofas; Couches; Beds
    • A47C17/86Parts or details for beds, sofas or couches only not fully covered in a single one of the sub-groups A47C17/02, A47C17/04, A47C17/38, A47C17/52, A47C17/64, or A47C17/84; Drawers in or under beds

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Seats For Vehicles (AREA)

Abstract

The invention discloses a head and neck support structure applied to a sofa seat, relates to the technical field of head and neck support, solves the problem that the neck and head support structure in the prior art cannot meet the comfort of different people when using the seat, the key points of the technical proposal are that the utility model comprises a fixed plate, a headrest block, a neck supporting block, a side plate, a sliding block, a push rod, a connecting rod and a contraction spring which is fixedly connected with the top of the sliding block, after the head is rested on the headrest block, the head pushes the headrest block to slide towards the direction close to the fixed plate, the headrest block pushes the sliding block to slide downwards through the push rod, the sliding block pushes the neck supporting block to slide towards the direction close to the neck through the connecting rod until the neck supporting block is tightly propped against the back side of the neck, therefore, after any person sits on the chair, the head and the neck can comfortably lean on the headrest block and the neck supporting block through the control of the force of the person.

Description

Head and neck support structure applied to sofa seat
Technical Field
The invention relates to the technical field of head and neck support, in particular to a head and neck support structure applied to a sofa seat.
Background
The neck problem of people is easily caused by long-time sitting, most of the work of the modern white-collar workers in the offices is long-time sitting, and in order to prevent the neck problem, the neck and the head are generally required to be supported by a seat.
When the neck and the head of the existing seat are supported, the neck and the head are supported independently, namely, supporting structures are respectively arranged on the head and the neck, and the height of the protrusion of the neck is higher than that of the head supporting structure; however, the distance between the rear side of the head and the rear side of the neck of different people is different greatly, which results in that the neck of different people can not be attached to the neck support structure when the seat is used by the different people, or the head of different people can be supported on the head support structure by continuously inclining the head backwards after the neck support structure, so that the problem of poor comfort is caused.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a head and neck support structure applied to a sofa seat, after a head is rested on a head pillow block, the head pushes the head pillow block to slide towards the direction close to a fixed plate, the head pillow block pushes a sliding block to slide downwards through a push rod, the sliding block pushes a neck support block to slide towards the direction close to the neck through a connecting rod until the neck support block abuts against the rear side of the neck, and therefore, after any person sits on the chair, the head and the neck can comfortably depend on the head pillow block and the neck support block through the control of the self-dependent force.
In order to achieve the purpose, the invention provides the following technical scheme: a head and neck support structure applied to a sofa seat comprises a fixed plate fixedly connected to the top of a chair back, a headrest block arranged on one side, close to the head, of the fixed plate and close to the top of the fixed plate, a neck support block arranged on one side, close to the head, of the fixed plate and close to the bottom of the fixed plate, two vertically arranged side plates fixedly connected to two sides of the fixed plate, a sliding block arranged on one side, close to the head, of the fixed plate and capable of sliding on the fixed plate in the vertical direction, a push rod with one end rotatably connected to the sliding block and the other end rotatably connected to one side, close to the fixed plate, of the headrest block, a connecting rod with one end rotatably connected to the sliding block and the other;
the top fixed connection of shrink spring is on the fixed plate, the vertical setting of fixed plate, and headrest piece and neck supporting shoe slide along the direction that is close to and keeps away from the fixed plate between the board of both sides, and when shrink spring was in undeformed state, the headrest piece deviates from the distance between fixed plate one side and the fixed plate and is greater than the distance that the neck supporting shoe deviates from between fixed plate one side and the fixed plate.
Through adopting above-mentioned technical scheme, the people sits after on the chair, the rear portion of head relies on the headrest piece earlier, then promote the headrest piece orientation and slide near the direction of fixed plate, the headrest piece promotes the sliding block lapse through the push rod, the sliding block promotes the neck supporting shoe orientation through the connecting rod and slides near the direction of neck, until the neck supporting shoe supports tightly at the neck rear side, thereby make anyone sit after on the chair, can both rely on the control of power through oneself, make the comfortable reliance of head and neck on headrest piece and neck supporting shoe.
The invention is further configured to: the side plates are perpendicular to the fixing plate, the two sliding grooves are formed in the positions, close to the top, of the two side plates, the length directions of the sliding grooves are the same as the sliding direction of the headrest block, two sliding blocks fixedly connected to the two ends, close to the two side plates, of the headrest block are arranged in the sliding grooves, the sliding blocks can slide in the sliding grooves along the length directions of the sliding grooves, and the sliding blocks are located at the positions, close to the fixing plate, of the two ends of the headrest block.
Through adopting above-mentioned technical scheme, through the slip of slider in the middle of the spout, can lead to the slip direction of headrest piece.
The invention is further configured to: one side of the neck supporting block, which is close to the supporting plate, is fixedly connected with two sliding plates, and one sides of the two sliding plates, which are far away from each other, are respectively contacted with one sides of the two side plates, which are close to each other;
the guide way has all been seted up to the one side that two sliding plates deviate from each other, and both sides board is close to side one side each other all fixedly connected with be located in the middle of the guide way and with the guide way guide block of mutually supporting, the length direction of guide way is the same with the length direction of neck supporting shoe.
Through adopting above-mentioned technical scheme, through the cooperation of guide block and guide way, can lead to the sliding direction of neck supporting shoe.
The invention is further configured to: two sides of one end, close to the headrest block, of the push rod are fixedly connected with two vertically arranged connecting plates, two sides, close to the connecting plates, of the push rod are fixedly connected with two rotating shafts, and the rotating shafts penetrate through the two connecting plates respectively and are connected to the two connecting plates in a rotating mode;
the axis direction of the rotating shaft is horizontally arranged and is vertical to the sliding direction of the headrest block, and the connection mode of the push rod and the sliding block, the connection mode of the connecting rod and the neck support block and the connection mode of the push rod and the headrest block are the same.
Through adopting above-mentioned technical scheme, through setting up fixed plate and fixed axle for the both ends of push rod can rotate respectively and connect on sliding block and headrest piece, and the both ends of connecting rod can rotate respectively and connect on sliding block and neck supporting shoe, realize that the push rod promotes the sliding block and slides, and the sliding block promotes the neck supporting shoe through the connecting rod and slides.
The invention is further configured to: the fixed plate is close to one side of headrest piece and has been seted up the groove of stepping down, and the one side that the groove of stepping down deviates from the headrest piece is provided with the sliding tray of seting up on the fixed plate, and the sliding tray all sets up along vertical direction with the length direction in groove of stepping down, and sliding block and spring all are located in the middle of the sliding tray, and the width of sliding block equals the width of sliding tray.
Through adopting above-mentioned technical scheme, through setting up the sliding tray, can enough lead the slip direction of sliding block, can also prevent that the sliding block from breaking away from in the middle of the fixed plate.
The invention is further configured to: the headrest block comprises a vertical plate, a depending plate arranged on one side of the vertical plate, which is far away from the fixed plate, and two arc plates fixedly connected to two sides of the depending plate;
the connecting rod is connected with one side of the vertical plate close to the fixing plate.
Through adopting above-mentioned technical scheme, through setting up two arcs, the arc can be maintained in the neck both sides to can support the neck completely.
The invention is further configured to: two guide plates are fixedly connected to two sides of the dependence plate, the guide plates are positioned on one side, close to the vertical plate, of the arc plate, and the arc plate has elasticity;
all be provided with on each guide board and run through the guide board and can carry out gliding constraint pole along neck supporting shoe slip direction on the guide board, the length direction of constraint pole is the same with neck supporting shoe's slip direction, and the one end that the constraint pole is close to the riser is in the same place with riser fixed connection.
Through adopting above-mentioned technical scheme, after riser and neck laminating, the head continues to promote the headrest piece, and the riser is towards the direction motion that is close to according to the board, promotes the motion of constraint rod simultaneously, and the constraint rod promotes two arcs and deviates from the direction motion that is close to each other of one side orientation of according to the board to make the arc can the cladding in the people's of different sizes neck both sides.
The invention is further configured to: a reset spring is arranged between the vertical plate and the depending plate, and two ends of the reset spring are respectively and fixedly connected to the vertical plate and the depending plate.
Through adopting above-mentioned technical scheme, through setting up reset spring, when nobody sat in the seat, reset spring can promote the distance between backup plate and the riser and reply.
In summary, compared with the prior art, the invention has the following beneficial effects:
1. according to the chair, the headrest block, the sliding block, the push rod, the connecting rod and the neck supporting block are arranged, after a person sits on the chair, the back of the head firstly depends on the headrest block, then the headrest block is pushed to slide towards the direction close to the fixing plate, the headrest block pushes the sliding block to slide downwards through the push rod, the sliding block pushes the neck supporting block to slide towards the direction close to the neck through the connecting rod until the neck supporting block abuts against the back side of the neck, and therefore after the person sits on the chair, the head and the neck can comfortably depend on the headrest block and the neck supporting block through the control of the relying force of the person;
2. according to the invention, the arc plates are arranged, so that the arc plates can be maintained on two sides of the neck, and the neck can be completely supported.
Drawings
FIG. 1 is an isometric view of the embodiment in use;
FIG. 2 is a schematic diagram of the complete structure of the embodiment;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a schematic view of an embodiment of a connecting structure of a push rod and a headrest block;
FIG. 5 is an enlarged view of the portion B of FIG. 4;
FIG. 6 is a cross-sectional view of an embodiment embodying a chute;
fig. 7 is a sectional view of an embodiment embodying a guide groove.
In the figure: 1. a sofa seat; 2. a fixing plate; 21. a yielding groove; 22. a sliding groove; 3. a side plate; 31. a chute; 32. a guide block; 4. a headrest block; 41. a connecting plate; 42. a slider; 5. a neck support block; 51. a vertical plate; 52. a backup plate; 53. an arc-shaped plate; 54. a sliding plate; 541. a guide groove; 55. a return spring; 56. a guide plate; 57. a lashing rod; 6. a push rod; 61. a rotating shaft; 7. a connecting rod; 8. a slider; 9. the spring is contracted.
Detailed Description
Example (b): the utility model provides a be applied to sofa seat's neck bearing structure, see figure 1 and figure 2, including fixed plate 2 of fixed connection at sofa seat 1 back of the chair top, set up headrest piece 4 near people's head one side at fixed plate 2, set up neck supporting shoe 5 near people's head one side at fixed plate 2, fixed connection is at both sides board 3 of 2 both sides limits departments of fixed plate, set up sliding block 8 near people's head one side at fixed plate 2, one end is rotated and is connected the push rod 6 that the other end rotates to be connected and is close to fixed plate 2 one side at headrest piece 4 on sliding block 8, one end is rotated and is connected on sliding block 8 the other end and is rotated and connect connecting rod 7 and the shrink spring 9 of fixed connection at 8 tops of sliding. The headrest block 4 is positioned at the position of the fixing plate 2 close to the top, and the neck support block 5 is positioned at the position of the fixing plate 2 close to the bottom; the sliding block 8 can slide on the fixed plate 2 along the vertical direction, and the top of the contraction spring 9 is fixedly connected on the fixed plate 2. The fixing plate 2 is vertically arranged and is parallel to the chair back, the side plate 3 is vertically arranged and is perpendicular to the fixing plate 2, the side plate 3 is positioned on one side, close to the headrest block 4, of the fixing plate 2, and the headrest block 4 and the neck support block 5 slide between the two side plates 3 in the direction close to and far away from the fixing plate 2; the sliding block 8 is positioned between the headrest block 4 and the neck support block 5; when the contraction spring 9 is not stressed, the distance between one side of the headrest block 4 departing from the fixed plate 2 and the fixed plate 2 is greater than the distance between one side of the neck support block 5 departing from the fixed plate 2 and the fixed plate 2.
When the person sits on the seat, the head rests on the headrest block 4, under the action of the head of the person, the headrest block 4 is pushed to slide towards the direction close to the fixing plate 2, the headrest block 4 pushes the sliding block 8 to slide downwards through the push rod 6 in the sliding process, and the sliding block 8 pushes the neck supporting block 5 to slide towards the direction departing from the fixing plate 2 through the connecting rod 7 in the downward sliding process until the neck supporting block 5 abuts against the back side of the neck.
Referring to fig. 2 and 3, the fixed plate 2 has been seted up near one side of headrest piece 4 and has been stepped down groove 21, the vertical setting of the length direction in groove 21 steps down, the one side that the groove 21 deviates from headrest piece 4 of stepping down is provided with the sliding tray 22 of seting up on fixed plate 2, the length direction of sliding tray 22 is the same with the length direction in groove 21 that steps down, sliding block 8 and spring all are located sliding tray 22 and work as well, sliding block 8's width equals the width of sliding tray 22, the top one end fixed connection of spring is in fixed plate 2 department at sliding tray 22 top. The slide groove 22 can guide the sliding direction of the slide block 8 and can prevent the slide block 8 from being detached from the fixed plate 2.
Referring to fig. 4 and 5, two vertically arranged connecting plates 41 are fixedly connected to two sides of one end of the push rod 6 close to the headrest block 4, two rotating shafts 61 are fixedly connected to two sides of the push rod 6 close to the connecting plates 41, and the rotating shafts 61 respectively penetrate through the two connecting plates 41 and are rotatably connected to the two connecting plates 41; the axial direction of the rotating shaft 61 is horizontally arranged and is vertical to the sliding direction of the headrest block 4; the connection mode of the push rod 6 and the sliding block 8, the connection mode of the connecting rod 7 and the neck support block 5 and the connection mode of the push rod 6 and the headrest block 4 are the same, and are not described in detail herein.
Referring to fig. 6, two sliding grooves 31 are formed in the positions, close to the tops, of the two side plates 3, the length direction of each sliding groove 31 is the same as the sliding direction of the headrest block 4, two sliding blocks 42 fixedly connected to the two ends, close to the two side plates 3, of the headrest block 4 are arranged in the sliding grooves 31, the sliding blocks 42 can slide in the sliding grooves 31 along the length direction of the sliding grooves 31, and the sliding blocks 42 are located at the positions, close to the fixing plates 2, of the two ends of the headrest block 4. The sliding direction of the headrest block 4 can be guided by the sliding of the slider 42 in the slide groove 31.
Referring to fig. 7, the neck support block 5 includes a vertical plate 51, a resting plate 52 disposed on a side of the vertical plate 51 away from the fixed plate 2, and two arc plates 53 fixedly connected to two sides of the resting plate 52; one side of the vertical plate 51 close to the support plate is fixedly connected with two sliding plates 54, and one sides of the two sliding plates 54 which are far away from each other are respectively contacted with one sides of the two side plates 3 which are close to each other; one sides of the two sliding plates 54, which are away from each other, are both provided with guide grooves 541, one sides of the two side plates 3, which are close to each other, are both fixedly connected with guide blocks 32, which are positioned in the guide grooves 541 and are mutually matched with the guide grooves 541, and the length direction of the guide grooves 541 is the same as that of the neck support blocks 5; the sliding direction of the headrest block 4 can be guided by the engagement of the guide block 32 and the guide groove 541.
Referring to fig. 7, the connecting rod 7 is connected to the vertical plate 51 on the side close to the fixed plate 2. Two guide plates 56 are fixedly connected to two sides of the leaning plate 52, and the guide plates 56 are positioned on one side of the arc plate 53 close to the vertical plate 51; each guide plate 56 is provided with a binding rod 57 which penetrates through the guide plate 56 and can slide on the guide plate 56 along the sliding direction of the neck support block 5, the length direction of the binding rod 57 is the same as the sliding direction of the neck support block 5, one end of the binding rod 57 close to the vertical plate 51 is fixedly connected with the vertical plate 51, and the binding rod 57 has elasticity. A return spring 55 is arranged between the vertical plate 51 and the relying plate 52, and two ends of the return spring 55 are respectively fixedly connected to the vertical plate 51 and the relying plate 52. The arc plate 53 has elasticity. When relying on board 52 and neck contact, the head continues to promote headrest 4, and connecting rod 7 just can promote riser 51 and slide towards the direction that is close to relying on board 52 to drive constraint pole 57 and promote two arcs 53 and take place elastic deformation, make two arcs 53 deviate from one side orientation that relies on board 52 and slide towards the direction that is close to each other, thereby make the cladding of arcs 53 in the both sides of people's neck.
The working principle of the head and neck support structure applied to the sofa seat during use is as follows: when the people sits on the seat, the head is rested on the headrest piece 4, under the effect of people's head, promote the headrest piece 4 and slide towards the direction that is close to fixed plate 2, the headrest piece 4 is in the middle of the gliding process, promote sliding block 8 lapse through push rod 6, sliding block 8 promotes neck supporting shoe 5 orientation through connecting rod 7 in the middle of the gliding process and slides towards the direction that deviates from fixed plate 2, when relying on board 52 to support tightly in the neck rear side, continue to promote headrest piece 4 through the head, connecting rod 7 promotes riser 51 towards the direction that is close to according to board 52 and slides, thereby it promotes two arcs 53 and takes place elastic deformation to drive constraint pole 57, make two arcs 53 deviate from the direction that is close to each other according to one side orientation of board 52 and slide, thereby make the arc 53 cladding in the both sides of people's neck. After the person gets out of the seat, the structures are restored to the original positions by the elastic force of the contraction spring 9 and the return spring 55.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (8)

1. The utility model provides a be applied to sofa seat's neck bearing structure which characterized in that: comprises a fixed plate (2) fixedly connected with the top of a chair back, a headrest block (4) arranged on one side of the fixed plate (2) close to the head of a person and close to the top of the fixed plate (2), a neck support block (5) arranged on one side of the fixed plate (2) close to the head of the person and close to the bottom of the fixed plate (2), and two vertically arranged side plates (3) fixedly connected with the two sides of the fixed plate (2), the device comprises a sliding block (8) which is arranged on one side, close to the head, of a fixed plate (2) and can slide on the fixed plate (2) along the vertical direction, a push rod (6) with one end rotatably connected to the sliding block (8) and the other end rotatably connected to one side, close to the fixed plate (2), of a headrest block (4), a connecting rod (7) with one end rotatably connected to the sliding block (8) and the other end rotatably connected to one side, close to the fixed plate (2), of a neck supporting block (5), and a contraction spring (9) fixedly connected to the top of the sliding block (8;
the top fixed connection of shrink spring (9) is on fixed plate (2), fixed plate (2) vertical setting, headrest piece (4) and neck supporting shoe (5) slide along the direction of being close to and keeping away from fixed plate (2) between both sides board (3), when shrink spring (9) are in undeformed state, headrest piece (4) deviate from the distance between fixed plate (2) one side and fixed plate (2) and be greater than neck supporting shoe (5) and deviate from the distance between fixed plate (2) one side and fixed plate (2).
2. The head and neck support structure as claimed in claim 1 applied to a sofa seat, wherein: curb plate (3) and fixed plate (2) mutually perpendicular, two spout (31) have been seted up to the position that both sides board (3) are close to the top on one side each other, the length direction of spout (31) is the same with the slip direction of headrest block (4), be provided with two respectively fixed connection in spout (31) and be close to slider (42) at both ends of both sides board (3) in headrest block (4), slider (42) can slide along the length direction of spout (31) in the middle of spout (31), slider (42) are located headrest block (4) both ends and are close to the position of fixed plate (2).
3. The head and neck support structure as claimed in claim 1 applied to a sofa seat, wherein: one side of the neck supporting block (5) close to the supporting plate is fixedly connected with two sliding plates (54), and one sides of the two sliding plates (54) which are deviated from each other are respectively contacted with one sides of the two side plates (3) which are close to each other;
guide grooves (541) are formed in one sides, which deviate from each other, of the two sliding plates (54), guide blocks (32), which are located in the guide grooves (541) and matched with the guide grooves (541), are fixedly connected to one sides, which are close to each other, of the two side plates (3), and the length direction of the guide grooves (541) is the same as that of the neck support block (5).
4. The head and neck support structure as claimed in claim 1 applied to a sofa seat, wherein: two sides of one end, close to the headrest block (4), of the push rod (6) are fixedly connected with two vertically arranged connecting plates (41), two sides, close to the connecting plates (41), of the push rod (6) are fixedly connected with two rotating shafts (61), and the rotating shafts (61) penetrate through the two connecting plates (41) respectively and are rotatably connected to the two connecting plates (41);
the axis direction of the rotating shaft (61) is horizontally arranged and is vertical to the sliding direction of the headrest block (4), and the connection mode of the push rod (6) and the sliding block (8), the connection mode of the connecting rod (7) and the neck support block (5) and the connection mode of the push rod (6) and the headrest block (4) are the same.
5. The head and neck support structure as claimed in claim 1 applied to a sofa seat, wherein: one side that fixed plate (2) are close to headrest piece (4) has been seted up and has been stepped down groove (21), and one side that step down groove (21) deviates from headrest piece (4) is provided with sliding tray (22) of seting up on fixed plate (2), and sliding tray (22) all set up along vertical direction with the length direction who steps down groove (21), and sliding block (8) and spring all are located sliding tray (22) in the middle of, and the width of sliding block (8) equals the width of sliding tray (22).
6. The head and neck support structure as claimed in claim 1 applied to a sofa seat, wherein: the headrest block (4) comprises a vertical plate (51), a depending plate (52) arranged on one side of the vertical plate (51) departing from the fixed plate (2), and two arc-shaped plates (53) fixedly connected to two sides of the depending plate (52);
the connecting rod (7) is connected with one side of the vertical plate (51) close to the fixing plate (2).
7. The head and neck support structure as in claim 6 applied to a sofa seat, wherein: two guide plates (56) are fixedly connected to two sides of the leaning plate (52), the guide plates (56) are located on one side, close to the vertical plate (51), of the arc-shaped plate (53), and the arc-shaped plate (53) has elasticity;
each guide plate (56) is provided with a binding rod (57) which penetrates through the guide plate (56) and can slide on the guide plate (56) along the sliding direction of the neck support block (5), the length direction of the binding rod (57) is the same as the sliding direction of the neck support block (5), and one end, close to the vertical plate (51), of the binding rod (57) is fixedly connected with the vertical plate (51).
8. The head and neck support structure as claimed in claim 1 applied to a sofa seat, wherein: a return spring (55) is arranged between the vertical plate (51) and the depending plate (52), and two ends of the return spring (55) are respectively and fixedly connected to the vertical plate (51) and the depending plate (52).
CN201910964037.9A 2019-10-11 2019-10-11 Head and neck support structure applied to sofa seat Active CN110693223B (en)

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CN201910964037.9A CN110693223B (en) 2019-10-11 2019-10-11 Head and neck support structure applied to sofa seat

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Application Number Priority Date Filing Date Title
CN201910964037.9A CN110693223B (en) 2019-10-11 2019-10-11 Head and neck support structure applied to sofa seat

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CN110693223A true CN110693223A (en) 2020-01-17
CN110693223B CN110693223B (en) 2022-08-12

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JP2008201234A (en) * 2007-02-20 2008-09-04 Toyota Boshoku Corp Vehicular seat
US20110272978A1 (en) * 2009-01-21 2011-11-10 Ts Tech Co, Ltd Vehicle seat
EP2489544A1 (en) * 2011-02-16 2012-08-22 Tachi-S Co., Ltd. Structure of seat back with headrest
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