Backrest assembly for seat and seat

Abstract

The utility model discloses a backrest assembly for a seat and the seat, and belongs to the technical field of seats, the backrest assembly comprises a plurality of supporting pieces and elastic connecting pieces, the supporting pieces are arranged in sequence, and every two adjacent supporting pieces are connected through the corresponding elastic connecting piece. Any supporting piece can respond to external acting force to apply pressure to the elastic connecting piece and move relative to other supporting pieces when the elastic connecting piece deforms. According to the invention, users with different body types or different sitting postures of the same user can be adapted through the movement of the supporting piece, so that a larger contact area is kept and enough supporting acting force is provided. In addition, the supporting piece in the backrest assembly is made of a hard material, so that the problems of stuffiness, air tightness and insufficient supporting force are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of seat, concretely relates to a backrest assembly for seat and seat. BACKGROUND

[0002] The conventional seat backrest is generally rigid structure, for different body types of users or different sitting postures of the same user, the pressure distribution of the user's back on the backrest is different, the fixed rigid backrest cannot provide comfortable support for different body types of users or different sitting postures of the same user. To solve the above technical problems, some seats are provided with rubber or silica gel filling in the front part of the backrest to adapt to different body types of users or different sitting postures of the same user through the deformation of the filling. However, the above filling can cause the problem of stuffiness and poor ventilation. In addition, although the rubber or silica gel filling can fully contact with the user's back, it also has the problem of insufficient supporting force while increasing the contact supporting area, and long-term use of such backrest may cause health problems of cervical vertebra. SUMMARY

[0003] The utility model aims at providing a backrest assembly for seat and seat, which can deform under external force to adapt to different body types of users or different sitting postures of the same user.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme:

[0005] The backrest assembly for seat comprises a support piece and an elastic connecting piece, the support piece is provided with a plurality of and arranged in sequence, and the adjacent two support pieces are connected through the elastic connecting piece, and any one of the support pieces can press the elastic connecting piece and move relative to other support pieces when the elastic connecting piece deforms in response to external force.

[0006] Preferably, the elastic connecting piece is a connecting block with deformation capacity, the connecting block is formed with two first clamping parts, the connecting block is connected with one of the two adjacent support pieces through one of the first clamping parts, and the connecting block is connected with the other of the two adjacent support pieces through the other of the first clamping parts.

[0007] Preferably, the support piece is provided with a butt joint groove matched with the first clamping part and a clamping shaft located in the butt joint groove, the first clamping part is formed with a clamping groove matched with the clamping shaft and a lead-in channel for clamping the clamping shaft into the clamping groove, and the first clamping part is placed into the butt joint groove through the lead-in channel and makes the clamping shaft clamped into the clamping groove.

[0008] Preferably, the clamping shaft is in the shape of a semicircular cylinder.

[0009] Preferably, the support is provided with a connecting end head, the abutting groove and the clamping shaft are arranged on the connecting end head, and the connecting end heads on two adjacent supports have an abutting interval; the connecting block comprises a main body part matched with the abutting interval, and the main body part is filled in the abutting interval, and the two first clamping parts are respectively formed on the opposite sides of the main body part.

[0010] Preferably, a plurality of the supports are arranged in sequence along the height direction of the seat; and / or, a plurality of the supports are arranged in sequence along the width direction of the seat.

[0011] Preferably, the backrest assembly further comprises an elastic connecting ring, and the elastic connecting ring is sleeved around the support and fixedly connected with the support.

[0012] Preferably, the support and the elastic connecting part cooperatively form a convex structure, the convex structure comprises a first convex part formed on the support and a second convex part formed on the elastic connecting part, and the elastic connecting ring is sleeved around the outside of the convex structure.

[0013] Preferably, the backrest assembly further comprises a mounting frame, and the two end portions of the support along the arrangement direction of the support are provided with adapter structures, and the support is rotatably arranged on the mounting frame through the adapter structures.

[0014] In addition, in order to achieve the above object, the utility model also adopts the following technical scheme:

[0015] The seat comprises a seat frame, and the backrest assembly as claimed in any one of the above technical schemes is arranged on the seat frame.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] When the user leans back on the backrest assembly, the support under pressure can apply pressure to the elastic connecting part, and when the pressure of the support on the elastic connecting part reaches a certain value, the elastic connecting part can be deformed, and any one support can move relative to other supports in the process of deformation of the elastic connecting part. When users of different body types or the same user adopt different sitting postures and lean on the backrest assembly, the backrest assembly can adapt through the movement of the supports to maintain a large contact area and provide sufficient supporting force. In addition, the supports in the backrest assembly are made of hard material, which avoids the problems of stuffiness and poor ventilation and insufficient supporting force. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A structural schematic view of a backrest assembly for a seat is provided for the embodiments of the present application.

[0019] Figure 2 Structure diagram of another perspective of the backrest assembly;

[0020] Figure 3 Structure diagram of arrangement of the support in the backrest assembly;

[0021] Figure 4 Explosion of the backrest assembly Figure 1 ;

[0022] Figure 5 Explosion of the backrest assembly Figure 2 ;

[0023] Figure 6 Assembly diagram of the backrest assembly and the connecting frame in the seat frame.

[0024] Wherein, 1, support; 10, connecting end; 100, butt joint groove; 101, clamping shaft; 102, butt joint interval; 11, first protruding part; 12, first adapter plate; 2, connecting block; 20, main body part; 21, first clamping part; 210, lead-in channel; 211, clamping groove; 22, second protruding part; 3, elastic connecting ring; 4, mounting frame; 40, second adapter plate; 5, connecting frame. DETAILED DESCRIPTION

[0025] Hereinafter, the present application will be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that the following described embodiments or technical features can be combined in any manner to form new embodiments, without conflict. Except for special description, the materials and devices used in the embodiments can be purchased from the market. The examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation on the present application.

[0026] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0027] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "communicated", "connected" should be understood in a broad sense, for example, it can be fixedly connected, or connected through an intermediate medium, or the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] The present embodiment provides a backrest assembly for a seat, as shown in Figure 1 、 Figure 2 and Figure 3 , the backrest assembly comprises a plurality of support members 1 arranged in sequence and connected by elastic connecting members. Wherein, any one of the support members 1 can press the elastic connecting members in response to external force and move relative to other support members 1 when the elastic connecting members are deformed.

[0029] The backrest assembly can be applied to a seat. When the user's back leans on the backrest assembly, the support members 1 under pressure will press the elastic connecting members. When the pressure of the support members 1 on the elastic connecting members reaches a certain value, the elastic connecting members will be deformed, and any one of the support members 1 can move relative to other support members 1 during the deformation of the elastic connecting members. When different users of different sizes or the same user adopts different sitting positions and leans on the backrest assembly, the backrest assembly can adapt through the movement of the support members 1 to maintain a larger contact area and provide sufficient supporting force. In addition, the support members 1 in the backrest assembly are made of hard material, which avoids the problems of stuffiness and poor ventilation and insufficient supporting force.

[0030] It should be noted that the support members 1 in the present embodiment are provided in plurality, and the shapes of the plurality of support members 1 are not the same, but each support member 1 is a rod-shaped structure with a certain curvature, so as to better fit the user's back. The support members 1 in the present embodiment are made of hard plastic material, specifically, made of nylon material. In other alternative embodiments, the support members 1 can also be made of wood, metal and other materials.

[0031] In combination with Figure 5As shown in the figures, the elastic connecting piece in the embodiment is a connecting block 2 with deformation capability, the connecting block 2 is formed with two first clamping portions 21, the connecting block 2 is connected with one of the two adjacent support pieces 1 through one first clamping portion 21, and the connecting block 2 is connected with the other of the two adjacent support pieces 1 through the other first clamping portion 21. The clamping connection mode facilitates the assembly operation of the connecting block 2 and the support piece 1 and has good stability. Further, the support piece 1 in the embodiment is provided with a butt joint groove 100 matched with the first clamping portion 21 and a clamping shaft 101 located in the butt joint groove 100. The first clamping portion 21 is formed with a clamping groove 211 matched with the clamping shaft 101 and an introduction passage 210 for clamping the clamping shaft 101 into the clamping groove 211, and the first clamping portion 21 is placed into the butt joint groove 100 through the introduction passage 210 and the clamping shaft 101 is clamped into the clamping groove 211.

[0032] Through the above structural design, the clamping groove 211 in the first clamping portion 21 can be clamped with the clamping shaft 101 in the support piece 1, at the same time, the inner wall of the butt joint groove 100 and the outer side of the first clamping portion 21 can interact with each other, which facilitates the support piece 1 to transmit the pressure to the connecting block 2 when the user leans on it, so that the support piece 1 can drive the connecting block 2 to deform more quickly. In addition, the first clamping portion 21 can be placed into the butt joint groove 100 to make the connecting block 2 and the support piece 1 smoothly transition without gaps.

[0033] Further, the clamping shaft 101 in the embodiment is in a semi-cylindrical shape. As mentioned above, the clamping groove 211 is matched with the clamping shaft 101, so that the clamping shaft 101 has a certain degree of rotational freedom relative to the clamping groove 211, which can improve the activity flexibility and range of the support piece 1. It is easy to understand that, since the clamping shaft 101 is in a semi-cylindrical shape, when the clamping shaft 101 rotates by a certain angle relative to the clamping groove 211, under the deformation elastic force of the connecting block 2, the clamping shaft 101 will no longer be able to continue to act, thereby limiting the support piece 1 from continuing to move.

[0034] In combination with the figures in Figure 3 and Figure 5 , the support piece 1 in the embodiment is provided with a connecting end 10, the butt joint groove 100 and the clamping shaft 101 are arranged on the connecting end 10, and the connecting end 10 on the two adjacent support pieces 1 has a butt joint interval 102. The connecting block 2 includes a main body 20 matched with the butt joint interval 102, the main body 20 is filled in the butt joint interval 102, and the two first clamping portions 21 are respectively formed on the opposite sides of the main body 20. By filling the main body 20 in the butt joint interval 102, the connecting block 2 and the support piece 1 can smoothly transition without gaps. The connecting end 10 in the embodiment is arranged at the two end portions of the support piece 1, and optionally, the connecting end 10 can also be arranged at the middle position of the support piece 1.

[0035] The connecting block 2 in the embodiment can be made of rubber, or can be made of silica gel or synthetic rubber (TPE material). In other alternative embodiments, a spring can also be used as an elastic connecting member, and the two ends of the spring can be fixed to the support 1 through spring legs.

[0036] As shown in Figure 1 and Figure 3 , five supports 1 are arranged in the embodiment, and the five supports 1 are arranged in the height direction of the seat. In other alternative embodiments, the number of supports 1 can be changed as needed. In addition, the arrangement direction of the support 1 can also be changed as needed. For example, the support 1 can be arranged in the width direction of the seat, or the support 1 can be arranged in both the height direction and the width direction of the seat. For example, ten supports 1 can be provided, and the ten supports 1 are symmetrically arranged in two groups in the width direction of the seat, and each group of supports 1 is five. In this way, each group of five supports 1 is arranged in the height direction of the seat, and the two groups of supports 1 are arranged in the width direction of the seat.

[0037] As shown in Figure 1 and Figure 4 , the backrest assembly provided in the embodiment further comprises an elastic connecting ring 3, and the elastic connecting ring 3 is sleeved around the support 1 and is fixed to the support 1. By providing the elastic connecting ring 3, the plurality of supports 1 can be sleeved around, so as to increase the stability between the plurality of supports 1 and avoid the falling of a certain support 1. At the same time, since the elastic connecting ring 3 has the elastic deformation ability, the movement of the support 1 will not be affected. Further, the support 1 and the elastic connecting member in the embodiment form a protruding structure, the protruding structure comprises a first protruding part 11 formed on the support 1 and a second protruding part 22 formed on the elastic connecting member, and the elastic connecting ring 3 is sleeved outside the protruding structure. The protruding structure is provided to facilitate the sleeving assembly of the elastic connecting ring 3.

[0038] The elastic connecting ring 3 in the embodiment is made of rubber, and alternatively, the elastic connecting ring 3 can also be made of silica gel or synthetic rubber (TPE material). After the elastic connecting ring 3 is sleeved outside the protruding structure, a nail gun can be used to nail and fix the elastic connecting ring 3 to the support 1. Alternatively, the elastic connecting ring 3 can also be bonded to the outside of the protruding structure through adhesive.

[0039] As shown in Figure 5As shown in the figure, the backrest assembly further comprises a mounting frame 4, and each of the support members 1 at both ends in the arrangement direction of the support members 1 is provided with an adapter structure. In the embodiment, five support members 1 are arranged in the height direction, and each of the support member 1 at the top end and the support member 1 at the bottom end is provided with the adapter structure. The support member 1 is rotatably arranged on the mounting frame 4 through the adapter structure. The mounting frame in the embodiment is made of aluminum alloy, and optionally, the mounting frame can also be made of hard plastic material.

[0040] Specifically, the adapter structure is a first adapter plate 12, and a second adapter plate 40 is correspondingly arranged on the mounting frame 4. The first adapter plate 12 and the second adapter plate 40 are both provided with through holes, and a tapping screw is passed through the through holes of the first adapter plate 12 and the second adapter plate 40 and is locked and fixed. In this way, the first adapter plate 12 can rotate relative to the second adapter plate 40 around the axis of the tapping screw. In actual application, when a user with a smaller body size or a lighter weight leans on the backrest assembly, the support member 1 generates a smaller movement; when a user with a larger body size or a heavier weight leans on the backrest assembly, the support member 1 generates a larger movement. The movement of the support member 1 specifically refers to the deformation and small-angle rotation of the support member 1 relative to the mounting frame 4.

[0041] In an optional embodiment, a mesh cloth can also be arranged on the side surface of the support member 1 away from the mounting frame 4. The mesh cloth can be fixed on the elastic connecting ring 3 by sewing or gun nailing, and when the elastic connecting ring 3 is assembled to the convex structure, the mesh cloth is directly arranged on the support member 1. The mesh cloth can also deform with the support member 1, and can also support the user to a certain extent.

[0042] The backrest assembly provided in the embodiment can be applied to a seat. As shown in the figure, the seat comprises a seat frame, and the backrest assembly is arranged on the seat frame. Figure 6 As shown in the figure, the mounting frame 4 can be fixedly connected with a connecting frame 5 of the seat frame. Of course, the mounting frame 4 can also be slidingly connected with the connecting frame 5, so that the backrest assembly can be adjusted relative to the seat frame in the front-rear direction or the height direction of the seat. The scheme that the backrest assembly can be adjusted relative to the seat frame in the front-rear direction or the height direction of the seat belongs to the prior art, and will not be described here. In other optional embodiments, the backrest assembly does not have the mounting frame 4, and the support member 1 can be directly mounted with the connecting frame 5 of the seat frame.

[0043] Finally, it should be noted that the above embodiments are only optional embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and replacements made by those skilled in the art on the basis of the present application all belong to the scope of protection required by the present application.

Claims

1. A backrest assembly for a seat, characterised in that, The backrest assembly comprises support pieces and elastic connecting pieces, the support pieces are arranged in sequence and multiple in number, two adjacent support pieces are connected by an elastic connecting piece, and any one of the support pieces can press the elastic connecting piece in response to external force and move relative to other support pieces when the elastic connecting piece deforms.

2. The backrest assembly of claim 1, wherein, The elastic connecting piece is a connecting block with deformation capability, the connecting block is formed with two first clamping portions, the connecting block is connected with one of the two adjacent support pieces through one of the first clamping portions, and the connecting block is connected with the other of the two adjacent support pieces through the other of the first clamping portions.

3. The backrest assembly of claim 2, wherein, The support piece is provided with a butt joint groove matched with the first clamping portion and a clamping shaft located in the butt joint groove, the first clamping portion is formed with a clamping groove matched with the clamping shaft and a guide channel for clamping the clamping shaft into the clamping groove, and the first clamping portion is placed into the butt joint groove through the guide channel and makes the clamping shaft clamped into the clamping groove.

4. The backrest assembly of claim 3, wherein, The clamping shaft is in a semi-cylindrical shape.

5. The backrest assembly of claim 3, wherein, The support piece is provided with a connecting end, the butt joint groove and the clamping shaft are arranged on the connecting end, and the connecting end on two adjacent support pieces has a butt joint interval therebetween. The connecting block comprises a main body matched with the butt joint interval, the main body is filled in the butt joint interval, and two first clamping portions are respectively formed on opposite sides of the main body.

6. The backrest assembly of any one of claims 1 to 5, wherein, Multiple support pieces are arranged in sequence along the height direction of the seat. And / or, multiple support pieces are arranged in sequence along the width direction of the seat.

7. The backrest assembly of any one of claims 1 to 5, wherein, The backrest assembly further comprises an elastic connecting ring, the elastic connecting ring is sleeved around the support pieces and is fixedly connected with the support pieces.

8. The backrest assembly of claim 7, wherein, The support piece and the elastic connecting piece cooperatively form a convex structure, the convex structure comprises a first convex portion formed on the support piece and a second convex portion formed on the elastic connecting piece, and the elastic connecting ring is sleeved around the convex structure.

9. The backrest assembly of any one of claims 1 to 5, wherein, The backrest assembly further comprises a mounting frame, both ends of the support piece along the arrangement direction are provided with an adapter structure, and the support piece is rotatably arranged in the mounting frame through the adapter structure.

10. A seat comprising a seat frame, characterized by The seat further comprises the backrest assembly according to any one of claims 1 to 9, and the backrest assembly is arranged in the seat frame.

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