Backrest structure with hidden headrest and sofa seat thereof

Abstract

The utility model discloses a backrest structure with a hidden headrest, which comprises a backrest component, a headrest component and a headrest component, the backrest component comprises a backrest frame and a cover plate, the backrest frame is provided with an open storage cavity, and the cover plate is hinged to the backrest frame and used for covering the storage cavity; the headrest assembly is hinged to the backrest frame, the headrest assembly can rotate into the containing cavity from the upper portion of the backrest frame, the headrest assembly comprises at least one rotary supporting frame, a fixing base is arranged in the containing cavity, the rotary supporting frame is hinged to the fixing base through a rotating shaft, and the rotating shaft is further sleeved with at least one dish-shaped gasket; the disc-shaped gasket is located between the rotating supporting frame and the end cap of the rotating shaft and / or located between the rotating supporting frame and the fixing base and / or located between the fixing base and the end cap of the rotating shaft. According to the backrest structure with the hidden headrest, the headrest assembly can be screwed out for use and hidden storage, and the headrest assembly is not prone to rotating and loosening. The utility model further discloses a sofa seat.

Description

Technical Field

[0001] The utility model relates to the technical field of seat backrests, in particular to a backrest structure with a hidden headrest and a sofa seat thereof. Background Art

[0002] Generally, sofa seats are equipped with backrests to support the user's back and improve the comfort of the seat. The backrests currently available on the market are generally divided into two types: backrests with headrests and backrests without headrests. The backrest with headrest not only supports the user's back, but the headrest can also support the head and neck, maintaining the normal posture of the body and reducing the pressure on the head and neck.

[0003] With the continuous development of social economy, users have higher and higher requirements for the comfort and aesthetics of sofa seats. Users sometimes require their heads to rest flat on the top of the backrest for a short rest without the need for a headrest. Sometimes users require the head and neck to be supported by a headrest during leisure time to reduce the pressure on the head and neck and relax the whole body. At the same time, if the headrest is fixed on the backrest, it will be exposed to the outside, affecting the aesthetics of the entire seat.

[0004] Therefore, in view of the above technical problems, it is necessary to propose a backrest structure with a hidden headrest. Utility Model Content

[0005] In order to overcome at least one defect of the prior art described above, the utility model provides a backrest structure with a hidden headrest, which can realize the rotational use and hidden storage of the headrest assembly, and the headrest assembly is not prone to rotation and loosening.

[0006] The technical solution adopted by the utility model to solve the problem is:

[0007] A backrest structure with a hidden headrest, comprising:

[0008] A backrest assembly, comprising a backrest frame and a cover plate, wherein the backrest frame is provided with an open storage cavity, and the cover plate is hinged to the backrest frame and used to cover the storage cavity;

[0009] A headrest assembly is hinged to a backrest frame, and the headrest assembly can be rotated from the upper part of the backrest frame to a storage cavity. The headrest assembly includes at least one rotating support frame, and a fixed seat is provided in the storage cavity. The rotating support frame and the fixed seat are hinged through a rotating shaft, and at least one disc washer is also sleeved on the rotating shaft. The disc washer is located between the rotating support frame and the end cap of the rotating shaft and / or between the rotating support frame and the fixed seat and / or between the fixed seat and the end cap of the rotating shaft.

[0010] Furthermore, the headrest assembly also includes an upper fixing plate for mounting the headrest plate, and two sides of the upper fixing plate are respectively connected to a rotating support frame.

[0011] Furthermore, two upper fixing plates are provided, and the two upper fixing plates are arranged at intervals along the height direction.

[0012] Furthermore, the rotating support frame includes a bending member and a rotating block connected to one end of the bending member, the rotating block is provided with a first hinge hole for the rotating shaft to pass through, and the rotating block can cooperate with the fixing seat to limit the rotation angle of the headrest assembly.

[0013] Furthermore, a relief groove for evading the bending member is provided on the top wall of the storage cavity.

[0014] Furthermore, the fixing seat includes a lower fixing plate and two hinged ears formed by integrally bending two ends of the lower fixing plate. The lower fixing plate can be used to limit the rotation block, and the hinged ears are provided with a second hinged hole for the rotation shaft to pass through.

[0015] Furthermore, the lower fixing plate is fixedly connected to the top wall of the storage cavity, and the hinged ear is bent and extended downward.

[0016] Furthermore, the rotating shaft includes a rivet and a flat washer for riveting with the rivet. There are at least three disc washers including a first disc washer, a second disc washer, and a third disc washer. The rivet passes through the first disc washer, the rotating block, the second disc washer, the hinged ear, and the third disc washer in sequence and is riveted and fixed to the flat washer.

[0017] Furthermore, the lower end of the cover plate is hinged to the bottom wall of the storage cavity through a hinge.

[0018] Furthermore, the fixing seat includes two seat bodies which are arranged at intervals and have adjustable gaps, each of the seat bodies is pivotally connected to a rotating support frame, and each rotating support frame is provided with a connecting hole for installing the headrest plate.

[0019] Furthermore, the seat body is L-shaped, the rotating support frame is hinged to the relatively outer side of the seat body, and the rotating support frame is used to abut against the front side of the top wall of the storage cavity to limit the position.

[0020] The utility model also discloses a sofa seat, which is applied with the backrest structure with hidden headrest.

[0021] In summary, the backrest structure with hidden headrest and the sofa seat provided by the utility model have the following technical effects:

[0022] The fixed seat is arranged in the storage cavity, and the rotating support frame of the headrest assembly is hinged to the fixed seat through a rotating shaft, so that the headrest assembly can be swung out for use and hidden for storage, thereby maintaining the overall beauty of the seat, and a disc washer is sleeved on the rotating shaft to prevent loosening. This can prevent the headrest assembly from rotating loose, causing abnormal noise, inconvenience in use, etc., when the headrest is swung out for use or screwed into the storage state, especially when the inclination angle of the backrest is adjusted or the user sits up suddenly. The overall structure is simple and the cost is low, and the rotation force of the headrest assembly is stable and the rotation is smooth without jamming. On the other hand, the wear-resistant characteristics of the disc washer can also be used to extend the overall service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional structural schematic diagram of a sofa seat according to Embodiment 1 of the present utility model;

[0024] Figure 2 This is a three-dimensional structural schematic diagram of a backrest structure with a hidden headrest according to Example 1 of the utility model;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the headrest assembly and the fixing seat connected in Example 1 of the utility model;

[0026] Figure 4 for Figure 3 An exploded schematic diagram of the headrest assembly and the mounting seat shown;

[0027] Figure 5 for Figure 2 A partial enlarged view of section A shown;

[0028] Figure 6 This is a schematic diagram of the three-dimensional structure of a backrest structure with a hidden headrest according to Embodiment 2 of the present utility model;

[0029] Figure 7 This is a schematic diagram of a three-dimensional structure in which a rotating support frame is connected to a base body according to Embodiment 2 of the present utility model;

[0030] Figure 8 This is an exploded schematic diagram of the connection between the rotating support frame and the base body in Example 2 of the utility model.

[0031] The meanings of the reference numerals are as follows:

[0032] 1. Headrest assembly; 11. Rotating support frame; 111. Bending piece; 112. Rotating block; 113. First hinge hole; 114. Connecting hole; 12. Rotating shaft; 121. Rivet; 122. Flat washer; 13. Disc washer; 131. First disc washer; 132. Second disc washer; 133. Third disc washer; 14. Upper fixing plate; 15. Headrest plate; 2. Backrest assembly; 21. Backrest frame; 22. Cover plate; 23. Storage cavity; 24. Fixed seat; 241. Lower fixing plate; 242. Articulated ear; 243. Second hinge hole; 244. Seat body; 25. Avoidance groove; 3. Armrest; 4. Seat; 5. Support part. DETAILED DESCRIPTION

[0033] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0036] Example 1

[0037] See also Figure 2 The utility model discloses a backrest structure with a hidden headrest, comprising: a headrest assembly 1 and a backrest assembly 2, the backrest assembly 2 comprising a backrest frame 21 and a cover plate 22, the backrest frame 21 is provided with an open storage cavity 23, the cover plate 22 is hinged to the backrest frame 21 and is used to cover the storage cavity 23. Preferably, the lower end of the cover plate 22 is hinged to the bottom wall of the storage cavity 23 by a hinge to facilitate the opening and closing of the cover plate 22. Of course, the cover plate 22 can also be hinged to the left side wall or the right side wall of the storage cavity 23 laterally. At this time, in order to avoid interference between the cover plate 22 and the armrest 3 of the sofa seat, the lower edge of the cover plate 22 needs to be higher than the upper edge of the armrest 3. Of course, the cover plate 22 can also be relatively hinged to the backrest frame 21 by other means such as a rotating shaft and a connecting rod structure.

[0038] The headrest assembly 1 is hinged to the backrest frame 21, and the headrest assembly 1 can be rotated from the upper part of the backrest frame 21 to the storage cavity 23, so that the headrest assembly 1 can be rotated out for use or hidden for storage.

[0039] For details, see Figures 2 to 5 The headrest assembly 1 includes a rotating support frame 11 and an upper fixing plate 14. The rotating support frame 11 is used to support the upper fixing plate 14. The upper fixing plate 14 is used to install the headrest plate 15. A fixing seat 24 is provided in the storage cavity 23. The rotating support frame 11 and the fixing seat 24 are hinged through the rotating shaft 12. In this way, when the headrest needs to be used, the cover plate 22 can be opened, and the headrest plate 15 can be manually rotated to make the headrest assembly 1 rotate relative to the fixing seat 24 around the rotating shaft 12 until the headrest plate 15 is rotated to the upper part of the backrest frame 21; when the headrest is not needed, the headrest plate 15 is manually rotated into the storage cavity 23, and then the cover plate 22 is closed. At this time, the headrest is hidden in the backrest assembly 2, and the seat maintains an overall beautiful appearance.

[0040] In particular, at least one disc washer 13 is sleeved on the rotating shaft 12, and the disc washer 13 is located between the rotating support frame 11 and the end cap of the rotating shaft 12 and / or between the rotating support frame 11 and the fixed seat 24 and / or between the fixed seat 24 and the end cap of the rotating shaft 12. In this way, the disc washer 13 is used to provide a pre-tightening force to prevent loosening, so as to prevent the headrest assembly 1 from rotating loose and causing abnormal noise, inconvenience in use, etc. during the use of the headrest when it is rotated out of the use state or rotated into the storage state, especially when the backrest inclination angle is adjusted or the user sits up suddenly, and the overall structure is simple and the cost is low. It can also make the rotation force of the headrest assembly 1 stable and the rotation is smooth without jamming. On the other hand, the wear-resistant characteristics of the disc washer 13 can also be used to extend the overall service life.

[0041] Preferably, the disc-shaped washers 13 are provided with at least three and include a first disc-shaped washer 131, a second disc-shaped washer 132, and a third disc-shaped washer 133. The first disc-shaped washer 131 is located between the end caps of the rotating support frame 11 and the rotating shaft 12, the second disc-shaped washer 132 is located between the rotating support frame 11 and the fixed seat 24, and the third disc-shaped washer 133 is located between the fixed seat 24 and the end cap of the rotating shaft 12. The specific number of the first disc-shaped washer 131, the second disc-shaped washer 132, and the third disc-shaped washer 133 is determined according to needs. In this way, the three-layer pre-tightening method can balance the smoothness and wear of each component during rotation, and further improve the stability of the rotation force of the headrest assembly 1.

[0042] See also Figure 3In this embodiment, preferably, two rotating support frames 11 are provided, and one rotating support frame 11 is connected to each side of the upper fixing plate 14 to enhance the stability of the upper fixing plate 14 and avoid or reduce the torsion caused by the force on the upper fixing plate 14. More preferably, two upper fixing plates 14 are provided, and the two upper fixing plates 14 are arranged at intervals in the height direction to better support the headrest plate 15.

[0043] It is understandable that in other preferred embodiments, the headrest assembly 1 may not include the upper fixing plate 14 , but the finished headrest package is directly connected to the rotating support frame 11 .

[0044] See also Figure 4 and Figure 5 In this embodiment, the rotating support frame 11 includes a bending member 111 and a rotating block 112 connected to one end of the bending member 111. The rotating block 112 is provided with a first hinge hole 113 for the rotating shaft 12 to pass through. The rotating block 112 can cooperate with the fixing seat 24 to limit the rotation angle of the headrest assembly 1. In particular, when the headrest is needed and the headrest plate 15 is rotated to the upper part of the backrest frame 21, so that the headrest assembly 1 is in a rotated out state, the rotating block 112 can abut against the fixing seat 24 to limit the headrest plate 15 from continuing to rotate backwards. At this time, the force arm of the user's head acting on the headrest plate 15 will be transmitted to the fixing seat 24, and the fixing seat 24 is used to bear the load, thereby reducing the strength requirements for the backrest frame 21 and reducing the production cost.

[0045] See also Figure 5 Preferably, an avoidance groove 25 for avoiding the bending member 111 is provided on the top wall of the storage cavity 23. When the headrest assembly 1 is in the unscrewed use state, the bending member 111 can be rotated to be embedded in the avoidance groove 25, and then the cover plate 22 is rotated to cover it. There is no need to open the avoidance groove on the cover plate 22. In this way, the flatness of the surface of the cover plate 22 is maintained, and the overall beauty of the seat is further maintained.

[0046] See also Figure 4 and Figure 5 In this embodiment, the fixing seat 24 is generally in an inverted U shape, including a lower fixing plate 241 and two hinge ears 242 formed by bending the two ends of the lower fixing plate 241 in one piece, the lower fixing plate 241 can be used to abut against the rotating block 112 for limiting position, and the hinge ears 242 are provided with a second hinge hole 243 for the rotating shaft 12 to pass through. Specifically, the lower fixing plate 241 is fixedly connected to the top wall of the storage cavity 23, and the hinge ears 242 are bent and extended downward.

[0047] See also Figure 4 and Figure 5In this embodiment, the rotating shaft 12 includes a rivet 121 and a flat washer 122 for riveting with the rivet 121, wherein the rivet 121 passes through the first disc washer 131, the rotating block 112, the second disc washer 132, the hinge ear 242 and the third disc washer 133 in sequence and then is riveted and fixed with the flat washer 122. In this way, the structure and production cost of the rotating shaft 12 are simplified, the overall assembly process is simple, and the use is universal.

[0048] See also Figure 1 Based on the same concept, the utility model also discloses a sofa seat, which is applied with the backrest structure with hidden headrest as described above. Specifically, the sofa seat also includes two armrests 3, a seat 4 and a support 5, the support 5 is used to support on the ground, the seat 4 is installed above the support 5, the two armrests 3 are installed on the left and right sides of the seat 4, and the backrest frame 21 in the backrest assembly 2 is installed on the rear side of the seat 4. Preferably, the backrest assembly 2 can drive the headrest assembly to rotate relative to the seat 4 to adjust the inclination angle.

[0049] Example 2

[0050] See also Figures 6 to 8 This embodiment also discloses a backrest structure with a hidden headrest.

[0051] The backrest structure of this embodiment is different from that of the first embodiment in that the fixing seat 24 is a split structure and the upper fixing plate 14 is eliminated. Figure 1 In the sofa seat shown.

[0052] See also Figure 6 and Figure 7 In this embodiment, the fixed seat 24 includes two seat bodies 244, which are arranged at intervals and have an adjustable gap. The rotating support frame 11 is also provided with two, each seat body 244 is pivotally connected to a rotating support frame 11, and each rotating support frame 11 is provided with a connecting hole 114 for installing the headrest plate 15. In this way, the rotating support frame 11 can be directly used to install the headrest plate 15, thereby eliminating the upper fixed plate 14.

[0053] Thus, in the above scheme, since the fixed seat 24 adopts a split structure and directly uses the rotating support frame 11 to install the headrest board 15, the connection distance between the two rotating support frames 11 and the headrest board 15 is adjustable, the assembly is simple, and it is convenient to flexibly adopt headrests of different widths and specifications according to the size of the sofa seat, and ensure the good supporting effect of the two rotating support frames 11 on the headrest.

[0054] See also Figure 7 and Figure 8Preferably, the seat body 244 is L-shaped, and the rotating support frame 11 is hinged to the relatively outer side of the seat body 244, wherein the relatively outer side of the seat body 244 refers to: the outer side of the two seat bodies 244 that is relatively far away, and the rotating support frame 11 is used to abut against the front side of the top wall of the storage cavity 23 to limit the position, so as to control the position of the rotating support frame 11 when it rotates upward and unfolds. The seat body 244 specifically includes a horizontal section and a vertical section connected to one end of the horizontal section, wherein the horizontal section is fixedly connected to the top wall of the storage cavity 23, and the vertical section extends downward and is provided with a second hinge hole 243 for the rotation shaft 12 to pass through, and the rotating support frame 11 is hinged to the outer side of the vertical section of the seat body 244.

[0055] Combination Figure 8 Similar to Example 1, the rotating support frame 11 also includes a bending piece 111 and a rotating block 112 connected to one end of the bending piece 111, and the rotating block 112 is provided with a first hinge hole 113 for the rotating shaft 12 to pass through; the difference is that the bending piece 111 is made of iron sheet, which is convenient for angle control and thinning materials to reduce costs, and the connecting hole 114 is arranged on the bending piece 111, which is also convenient for processing the connecting hole 114, and the front side of the bending piece 111 can also provide a larger supporting surface for the headrest plate 15 to achieve a better supporting effect.

[0056] It should be noted that the rotating shaft 12 and the disc washer 13 used in this embodiment are the same as those in Embodiment 1, and the relevant description in Embodiment 1 may be referred to, and will not be repeated here. In this embodiment, based on the rotation support frame 11 being hinged to the relatively outer side of the seat body 244, during installation, the rivet 121 sequentially passes through the first disc washer 131, the second hinge hole 243 on the seat body 244, the second disc washer 132, the rotating block 112 and the third disc washer 133, and then is riveted and fixed with the flat washer 122, thereby solving the same technical problem as in Embodiment 1 and achieving the same technical effect as in Embodiment 1.

[0057] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A backrest structure with a hidden headrest, characterized in that: include: A backrest assembly, comprising a backrest frame and a cover plate, wherein the backrest frame is provided with an open storage cavity, and the cover plate is hinged to the backrest frame and used to cover the storage cavity; A headrest assembly hinged to the backrest frame, the headrest assembly can be rotated from the upper part of the backrest frame to the storage cavity, the headrest assembly includes at least one rotating support frame, a fixed seat is provided in the storage cavity, the rotating support frame and the fixed seat are hinged through a rotating shaft, and at least one disc washer is also sleeved on the rotating shaft, the disc washer is located between the rotating support frame and the end cap of the rotating shaft and / or between the rotating support frame and the fixed seat and / or between the fixed seat and the end cap of the rotating shaft.

2. The backrest structure with hidden headrest according to claim 1, characterized in that: The headrest assembly also includes an upper fixing plate for mounting the headrest plate, and two sides of the upper fixing plate are respectively connected to a rotating support frame.

3. The backrest structure with hidden headrest according to claim 2, characterized in that: There are two upper fixing plates, and the two upper fixing plates are arranged at intervals along the height direction.

4. The backrest structure with hidden headrest according to claim 2, characterized in that: The rotating support frame includes a bending part and a rotating block connected to one end of the bending part. The rotating block is provided with a first hinge hole for the rotating shaft to pass through. The rotating block can cooperate with the fixing seat to limit the rotation angle of the headrest assembly.

5. The backrest structure with hidden headrest according to claim 4, characterized in that: An escape groove for evading the bending member is provided on the top wall of the storage cavity.

6. The backrest structure with hidden headrest according to claim 4, characterized in that: The fixing seat comprises a lower fixing plate and two hinged ears formed by integrally bending two ends of the lower fixing plate. The lower fixing plate can be used to limit the position of the rotating block. The hinged ears are provided with a second hinged hole for the rotating shaft to pass through.

7. The backrest structure with hidden headrest according to claim 6, characterized in that: The lower fixing plate is fixedly connected to the top wall of the storage cavity, and the hinged ear is bent and extended downward.

8. The backrest structure with hidden headrest according to claim 6 or 7, characterized in that: The rotating shaft includes a rivet and a flat washer for riveting with the rivet. The disc washers are provided with at least three and include a first disc washer, a second disc washer, and a third disc washer. The rivet passes through the first disc washer, the rotating block, the second disc washer, the hinged ear, and the third disc washer in sequence and is then riveted and fixed to the flat washer.

9. The backrest structure with a hidden headrest according to claim 1, characterized in that: The lower end of the cover plate is hinged to the bottom wall of the storage cavity through a hinge.

10. The backrest structure with hidden headrest according to claim 1, characterized in that: The fixing seat comprises two seat bodies which are arranged at intervals and have adjustable gaps. Each of the seat bodies is pivotally connected to a rotating support frame, and each of the rotating support frames is provided with a connecting hole for mounting a headrest plate.

11. The backrest structure with a hidden headrest according to claim 10, characterized in that: The seat body is in an L shape, the rotating support frame is hinged to the relatively outer side of the seat body, and the rotating support frame is used to abut against the front side of the top wall of the storage cavity to limit the position.

12. A sofa seat, characterized in that: A backrest structure with a hidden headrest as claimed in any one of claims 1 to 11 is used.

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