backrest and seat

Abstract

The utility model relates to chair technical field especially relates to a backrest and seat chair. The backrest includes support frame, support piece and adjusting mechanism, and the support piece includes support plate and adjusting plate, and the adjusting plate is connected with the support frame through the adjusting mechanism, and the adjusting mechanism can make the adjusting plate move up and down and move back and forth relative to the support frame. The seat chair includes the backrest. The utility model provides a backrest and seat chair to alleviate the technical problem that the waist support or neck support on the backrest is fixed and the position is not adjustable in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of chair technology, and in particular to a backrest and a seat. Background Technology

[0002] A chair is a type of seating furniture consisting of a seat and a backrest. Modern chairs prioritize aesthetics and style, and some chairs are no longer just for sitting; they combine technology to make life more convenient and play a vital role in people's daily lives. The backrest of a chair supports the back of the human body, and some chairs have soft padding on the backrest to improve comfort and relieve back fatigue. While the backrests of existing office chairs can meet the most basic needs of users, they still have the following drawbacks in actual use: the lumbar support or neck support on the backrest is fixed, and users cannot adjust its position according to their own needs, making the chair uncomfortable to use.

[0003] Therefore, this application provides a new backrest and seat to address the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a backrest that at least alleviates the technical problem in the prior art where the lumbar support or neck support on the backrest is fixed and its position is not adjustable.

[0005] The purpose of this utility model is also to provide a seat that further alleviates the technical problem in the prior art where the lumbar support or neck support on the backrest is fixed and its position cannot be adjusted.

[0006] Based on the aforementioned first objective, this utility model provides a backrest, which includes a support frame, a support member, and an adjustment mechanism. The support member includes a support plate for supporting a human body and an adjustment plate connected to the support plate. The adjusting plate is connected to the support frame through the adjusting mechanism, and the adjusting mechanism enables the adjusting plate to move up and down and back and forth relative to the support frame.

[0007] Furthermore, the adjustment mechanism includes a first top plate and a second top plate, which are respectively disposed on both sides of the adjustment plate and are movably connected to the support frame. A lead screw is fixedly connected to the second top plate, and an adjustment nut is disposed on the support frame and is rotatably connected to the support frame. The adjustment nut is screwed onto the lead screw. Rotating the adjusting nut moves the lead screw, causing the second top plate to move relative to the support frame, thereby the second top plate drives the adjusting plate and the first top plate to move back and forth.

[0008] Furthermore, the support frame is provided with a guide plate, and the guide plate is provided with a guide groove. The first top plate and the second top plate are both engaged in the guide groove and can move along the guide groove. Rotating the adjusting nut allows the lead screw to move the second top plate and the first top plate along the guide groove.

[0009] Furthermore, the first top plate is provided with a groove, the adjustment plate is provided with a limiting groove, and there are multiple limiting grooves, which are spaced apart along the length direction of the adjustment plate. The adjustment mechanism also includes a limiting ball, which is partially located in the groove and partially located in the limiting slot. By moving the adjustment plate up and down, the groove can correspond to different limiting slots, so that the limiting ball is engaged in the corresponding limiting slot.

[0010] Furthermore, the limiting groove has a smooth transition along the length of the adjusting plate.

[0011] Furthermore, the backrest also includes a massage device, which includes a massage mechanism disposed on the support frame and a drive mechanism capable of driving the massage mechanism to move along the height direction of the support frame.

[0012] Furthermore, the support member includes a neck brace disposed in the neck region of the support frame, and / or, the support member includes a lumbar support disposed in the waist region of the support frame.

[0013] Furthermore, the support frame is a curved frame that matches the human body, and / or the support plate is a curved panel that matches the human body.

[0014] By adopting the above technical solution, the backrest of this utility model has at least the following beneficial effects: In this embodiment, the backrest is used to support the human body, such as the neck or waist. The support plate in the support is used to directly contact the neck or waist to maintain the physiological curvature of the cervical or lumbar spine, reduce the pressure on the cervical or lumbar spine, and thus improve the comfort of leaning against the backrest.

[0015] The adjustable plate in the support component is used to connect with the support frame, and the adjustable plate can move up and down and back and forth relative to the support frame through the adjustment mechanism. This allows the support plate to move up and down and back and forth, so that the user can adjust the position of the support plate according to their own needs, so that the position of the support plate can meet the height and depth requirements of different people, making the use of the seat more comfortable.

[0016] Based on the second objective mentioned above, the present invention provides a seat, which includes a seat and the aforementioned backrest, wherein the support frame of the backrest is connected to the seat.

[0017] Furthermore, the seat also includes a support frame disposed at the bottom end of the seat and armrests disposed on the support frame.

[0018] By adopting the above technical solution, the seat of this utility model has at least the following beneficial effects: By incorporating the aforementioned backrest within the seat, the seat consequently possesses all the advantages of the aforementioned backrest, which will not be elaborated upon here. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 One of the structural schematic diagrams of the seat provided in the embodiment of this utility model; Figure 2 A second schematic diagram of the structure of the seat provided in this embodiment of the utility model; Figure 3 A partial structural cross-sectional view of the seat provided in an embodiment of this utility model; Figure 4 for Figure 3 Enlarged view of a portion of the seat structure; Figure 5 A schematic diagram of the structure of the backrest support provided in an embodiment of this utility model.

[0021] Figure label: 1-Backrest; 11-Support frame; 111-Guide plate; 112-Guide groove; 12-Support component; 121-Support plate; 122-Adjusting plate; 1221-Limiting groove; 13-Adjusting mechanism; 131-First top plate; 1311-Groove; 132-Second top plate; 133-Lead screw; 134-Adjusting nut; 135-Limiting ball; 21-Massage mechanism; 22-Rack and pinion; 3-Seat; 4-Support frame; 5-Armrest. Detailed Implementation

[0022] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example 1 Please see Figure 1 and Figure 2 This embodiment provides a backrest 1, which includes a support frame 11, a support member 12, and an adjustment mechanism 13. The support member 12 includes a support plate 121 for supporting a human body and an adjustment plate 122 connected to the support plate 121. The adjustment plate 122 is connected to the support frame 11 through the adjustment mechanism 13, and the adjustment mechanism 13 enables the adjustment plate 122 to move up and down and back and forth relative to the support frame 11.

[0026] It should be noted that, please refer to Figure 1 In the diagram, arrow A indicates the up-down direction, and arrow B indicates the front-back direction. Specifically, the up-down movement mentioned here refers to the up-down movement along the height direction of the backrest 1, and the front-back movement mentioned here refers to the front-back movement along the thickness direction of the backrest 1. That is, when a person leans against the backrest 1, the adjustment plate 122 can move the back of the person back and forth. Specifically, the forward movement here is a movement that protrudes from the support frame 11 to provide greater support, and the backward movement here is a movement that recesses towards the support frame 11 to provide less support.

[0027] In the backrest 1 of this embodiment, the support member 12 is used to support the human body, such as the neck or waist of the human body. The support plate 121 in the support member 12 is used to directly contact the neck or waist of the human body to maintain the physiological curvature of the cervical or lumbar spine, reduce the pressure on the cervical or lumbar spine, and thus improve the comfort of leaning on the backrest 1.

[0028] The adjusting plate 122 in the support member 12 is used to connect with the support frame 11, and the adjusting plate 122 can move up and down and back and forth relative to the support frame 11 through the adjusting mechanism 13, thereby realizing the up and down and back and forth movement of the support plate 121. Users can adjust the position of the support plate 121 according to their own needs, so that the position of the support plate 121 can meet the height and depth requirements of different people, making the use of the seat more comfortable.

[0029] Preferably, please refer to Figure 3 and Figure 4 In this embodiment, the adjustment mechanism 13 includes a first top plate 131 and a second top plate 132. The first top plate 131 and the second top plate 132 are respectively disposed on both sides of the adjustment plate 122 and are movably connected to the support frame 11. A lead screw 133 is fixedly connected to the second top plate 132. An adjustment nut 134 is disposed on the support frame 11 and is rotatably connected to the support frame 11. The adjustment nut 134 is screwed onto the lead screw 133. Rotating the adjustment nut 134 can move the lead screw 133, thereby moving the second top plate 132 relative to the support frame 11. As a result, the second top plate 132 drives the adjustment plate 122 and the first top plate 131 to move back and forth.

[0030] As a first feasible method, rotating the adjusting nut 134 in the first direction allows the lead screw 133, the second top plate 132, the adjusting plate 122, and the first top plate 131 to move forward, thereby making the support plate 121 protrude more from the support frame 11 to provide greater support. Rotating the adjusting nut 134 in the second direction allows the lead screw 133, the second top plate 132, the adjusting plate 122, and the first top plate 131 to move backward, thereby making the support plate 121 recessed towards the support frame 11 to provide less support. The first direction is opposite to the second direction.

[0031] Alternatively, as a second possible approach, rotating the adjusting nut 134 in the first direction allows the lead screw 133, the second top plate 132, and the first top plate 131 to move forward, thereby making the support plate 121 protrude further out of the support frame 11 to provide greater support. The operator manually pushes the first top plate 131 backward, causing it to move backward relative to the support frame 11. This causes the first top plate 131 to move the adjusting plate 122 and the second top plate 132 backward, and the movement of the lead screw 133 causes the adjusting nut 134 to automatically rotate in the second direction.

[0032] Preferably, please refer to Figure 3 and Figure 4 In this embodiment, a guide plate 111 is provided on the support frame 11, and a guide groove 112 is provided on the guide plate 111. The first top plate 131 and the second top plate 132 are both locked in the guide groove 112 and can move along the guide groove 112. Rotating the adjusting nut 134 can cause the lead screw 133 to drive the second top plate 132 and the first top plate 131 to move along the guide groove 112.

[0033] The guide plate 111 provides guidance for the movement of the first top plate 131 and the second top plate 132, thereby making the movement of the first top plate 131 and the second top plate 132 more reliable and stable, and thus making the forward and backward movement of the support member 12 more reliable and stable.

[0034] Preferably, please refer to Figure 4 and Figure 5 In this embodiment, the first top plate 131 is provided with a groove 1311, and the adjusting plate 122 is provided with a limiting groove 1221. Multiple limiting grooves 1221 are provided, and the multiple limiting grooves 1221 are spaced apart along the length direction of the adjusting plate 122. The adjusting mechanism 13 also includes a limiting ball 135, which is partially located in the groove 1311 and partially located in the limiting groove 1221. When the adjusting plate 122 is moved up and down, the groove 1311 can correspond to different limiting grooves 1221, so that the limiting ball 135 is engaged in the corresponding limiting groove 1221.

[0035] It should be noted that, since the adjusting plate 122 is located between the first top plate 131 and the second top plate 132, the first top plate 131 and the second top plate 132 limit the front and rear positions of the adjusting plate 122. Pulling the adjusting plate 122 up and down allows it to move up and down relative to the first top plate 131. This causes different limiting grooves 1221 on the adjusting plate 122 to correspond to the grooves 1311 on the first top plate 131, so that the limiting balls 135 in the grooves 1311 move in different limiting grooves 1221. When the adjusting plate 122 is adjusted to a suitable height, the limiting balls 135 are engaged in the corresponding limiting grooves 1221, thereby locking the position of the adjusting plate 122 and maintaining its height. This achieves the height adjustment and locking of the support plate 121, so that the height of the support plate 121 can meet the height requirements of different people, making the seat more comfortable to use.

[0036] Preferably, please refer to Figure 5 In this embodiment, the limiting groove 1221 is smoothly transitioned along the length of the adjusting plate 122.

[0037] This design allows the limiting ball 135 to move in different limiting grooves 1221, reducing wear on the limiting ball 135 and the adjusting plate 122, and extending the service life of the backrest 1.

[0038] Preferably, please refer to Figure 1 In this embodiment, the backrest 1 also includes a massage device, which includes a massage mechanism 21 disposed on the support frame 11 and a drive mechanism capable of driving the massage mechanism 21 to move along the height direction of the support frame 11.

[0039] The massage device enables the backrest 1 to also function as a massage chair, further enhancing the comfort of the seat. The massage mechanism 21 provides the massage function, and the drive mechanism moves the massage mechanism 21 along the height of the support frame 11, enabling the massage device to provide up-and-down massage functionality.

[0040] Optionally, please see Figure 1 The drive mechanism includes a drive motor, a transmission gear, and a rack 22 extending along the height direction of the support frame 11. The drive motor is mounted on the support frame 11, and the transmission gear is fixed to the massage core 21. The drive motor drives the transmission gear, which meshes with the rack 22. Therefore, when the drive motor is started, it can drive the transmission gear to rotate, thereby enabling the transmission gear to move along the rack 22. This allows the massage core 21 to move along the rack 22, so that the massage core 21 moves along the height direction of the support frame 11.

[0041] Optionally, the support member 12 includes a neck brace disposed in the neck region of the support frame 11, or the support member 12 includes a lumbar support disposed in the waist region of the support frame 11. Preferably, the support member 12 includes a neck brace disposed in the neck region of the support frame 11 and a lumbar support disposed in the waist region of the support frame 11.

[0042] Optionally, the support frame 11 is a curved frame that matches the human body, or the support plate 121 is a curved panel that matches the human body. Preferably, in this embodiment, the support frame 11 is a curved frame that matches the human body, and the support plate 121 is a curved panel that matches the human body.

[0043] Example 2 Embodiment 2 provides a seat, which includes the backrest 1 of Embodiment 1. The technical features of the backrest 1 disclosed in Embodiment 1 are also applicable to this embodiment, and the technical features of the backrest 1 disclosed in Embodiment 1 will not be described again. The implementation of the seat will be further described in detail below with reference to the accompanying drawings.

[0044] Please see Figure 1 and Figure 2The chair provided in this embodiment includes a seat 3 and the aforementioned backrest 1, with the support frame 11 of the backrest 1 connected to the seat 3.

[0045] Alternatively, the seat in this embodiment can be a car seat, a massage chair in a public place, or an office chair, etc.

[0046] In the backrest 1 of the seat, the support member 12 is used to support the human body, such as the neck or waist. The support plate 121 in the support member 12 is used to directly contact the neck or waist of the human body to maintain the physiological curvature of the cervical or lumbar spine, reduce the pressure on the cervical or lumbar spine, and thus improve the comfort of leaning on the backrest 1.

[0047] The adjustment mechanism 13 moves the adjustment plate 122 up and down and back and forth relative to the support frame 11, thereby realizing the up and down and back and forth movement of the support plate 121. Users can adjust the position of the support plate 121 according to their own needs, so that the position of the support plate 121 can meet the height and depth requirements of different people, making the use of the seat more comfortable.

[0048] Preferably, please refer to Figure 1 In this embodiment, the seat also includes a support frame 4 disposed at the bottom of the seat 3 and an armrest 5 disposed on the support frame 11.

[0049] The seat in this embodiment has the advantages of the backrest 1 in Embodiment 1, which have been described in detail in Embodiment 1 and will not be repeated here.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A backrest, characterized in that, It includes a support frame (11), a support member (12) and an adjustment mechanism (13). The support member (12) includes a support plate (121) for supporting the human body and an adjustment plate (122) connected to the support plate (121). The adjusting plate (122) is connected to the support frame (11) through the adjusting mechanism (13), and the adjusting mechanism (13) enables the adjusting plate (122) to move up and down and back and forth relative to the support frame (11).

2. The backrest according to claim 1, characterized in that, The adjustment mechanism (13) includes a first top plate (131) and a second top plate (132). The first top plate (131) and the second top plate (132) are respectively disposed on both sides of the adjustment plate (122) and are movably connected to the support frame (11). A lead screw (133) is fixedly connected to the second top plate (132). An adjustment nut (134) is disposed on the support frame (11) and is rotatably connected to the support frame (11). The adjustment nut (134) is screwed onto the lead screw (133). Rotating the adjusting nut (134) moves the lead screw (133), causing the second top plate (132) to move relative to the support frame (11), thereby causing the second top plate (132) to drive the adjusting plate (122) and the first top plate (131) to move back and forth.

3. The backrest according to claim 2, characterized in that, The support frame (11) is provided with a guide plate (111), and a guide groove (112) is provided on the guide plate (111). The first top plate (131) and the second top plate (132) are both engaged in the guide groove (112) and can move along the guide groove (112). Rotating the adjusting nut (134) allows the lead screw (133) to drive the second top plate (132) and the first top plate (131) to move along the guide groove (112).

4. The backrest according to claim 2, characterized in that, The first top plate (131) is provided with a groove (1311), the adjustment plate (122) is provided with a limiting groove (1221), and there are multiple limiting grooves (1221), which are spaced apart along the length direction of the adjustment plate (122). The adjustment mechanism (13) also includes a limiting ball (135), which is partially located in the groove (1311) and partially located in the limiting slot (1221). When the adjustment plate (122) is moved up and down, the groove (1311) can correspond to different limiting slots (1221) so that the limiting ball (135) is engaged in the corresponding limiting slot (1221).

5. The backrest according to claim 4, characterized in that, Along the length of the adjusting plate (122), the limiting groove (1221) is smoothly transitioned at all points.

6. The backrest according to any one of claims 1-5, characterized in that, The backrest also includes a massage device, which includes a massage mechanism (21) disposed on the support frame (11) and a drive mechanism capable of driving the massage mechanism (21) to move along the height direction of the support frame (11).

7. The backrest according to any one of claims 1-5, characterized in that, The support member (12) includes a neck brace disposed in the neck region of the support frame (11), and / or the support member (12) includes a lumbar support disposed in the waist region of the support frame (11).

8. The backrest according to any one of claims 1-5, characterized in that, The support frame (11) is a curved frame that matches the human body, and / or the support plate (121) is a curved panel that matches the human body.

9. A type of seat, characterized in that, Includes a seat (3) and a backrest (1) as described in any one of claims 1-8, wherein the support frame (11) of the backrest (1) is connected to the seat (3).

10. The seat according to claim 9, characterized in that, The seat also includes a support frame (4) disposed at the bottom of the seat (3) and an armrest (5) disposed on the support frame (11).

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