Waist supporting assembly of seat and seat

Abstract

The utility model discloses a waist supporting assembly of a seat and the seat. The waist supporting assembly of the seat comprises a supporting seat, a main waist support and an auxiliary waist support which are arranged on a backrest of the seat, the supporting seat comprises a first end connected with a seat backrest, a second end located at the front end of the supporting seat and a bottom face located between the first end and the second end and located at the bottom of the supporting seat. The main waist support is connected to the second end of the supporting seat, and the front side forms a main supporting surface; the auxiliary waist support comprises an elastic connecting piece and a supporting frame, the upper end of the elastic connecting piece is connected to the bottom face of the supporting base, the supporting frame is connected to the elastic connecting piece, an auxiliary supporting face located below the main supporting face is formed on the front side of the supporting frame, and the supporting frame can swing along with deformation of the elastic connecting piece so that the auxiliary supporting face can have the front-back swing freedom degree. According to the seat, the sacrum part of a user can be supported, and the comfort of the seat is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a lumbar support component of a seat and the seat. Background Art

[0002] To alleviate the fatigue caused by the user's waist being suspended in the air when using the chair for a long time, some office chairs and gaming chairs are usually equipped with lumbar supports on the backrest. The lumbar support supports the user's waist and prevents the waist from being suspended in the air, thereby alleviating lumbar fatigue. When using the chair in practice, users often change their sitting posture to meet different needs. For example, when the user uses the chair in a reclining position, the lumbar support swings backward with the backrest in the reclining position, and the lumbar support position relative to the user moves upward, causing the user's sacrum to feel fatigue due to lack of support. Utility Model Content

[0003] The purpose of the utility model is to provide a lumbar support assembly for a seat and a seat, which can reduce fatigue of the user's sacrum and improve the comfort of the seat.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] The lumbar support assembly of the seat includes a support base mounted on the seat back, a main lumbar support, and a secondary lumbar support located below the main lumbar support;

[0006] The support base includes a first end connected to the seat back, a second end located at the front end of the support base, and a bottom surface located between the first end and the second end and at the bottom of the support base;

[0007] The main lumbar support is connected to the second end of the support base, and the front side of the main lumbar support forms the main support surface;

[0008] The secondary lumbar support includes an elastic connector and a support frame. The upper end of the elastic connector is connected to the bottom surface of the support seat. The support frame is connected to the elastic connector and its front side forms a secondary support surface located below the main support surface. The support frame can swing with the deformation of the elastic connector so that the secondary support surface has the freedom to swing back and forth.

[0009] Preferably, the elastic connecting member includes a connecting plate and an elastic sheet, the connecting plate is fixedly connected to the bottom surface of the support seat, the elastic sheet extends downward from the connecting plate, and the support frame is connected to the elastic sheet.

[0010] Preferably, the support frame is fixedly connected to the spring piece in an up-and-down adjustable manner.

[0011] Preferably, a side surface of the spring sheet is provided with a plurality of transversely extending first card slots, and the plurality of first card slots are arranged along the extension direction of the spring sheet. A connecting portion and a cover plate opposite to the connecting portion are provided on the support frame, and the connecting portion and the cover plate are respectively placed on the front and rear sides of the spring sheet and are fixed together by bolts; a mating surface is formed on the surface of the cover plate facing the spring sheet or the surface of the connecting portion facing the spring sheet, and a transversely extending second card slot is provided on the mating surface, and the second card slot and one of the first card slots form an insertion slot, and a limiting column is passed through the insertion slot to limit the freedom of the support frame to move relative to the spring sheet in the extension direction of the spring sheet.

[0012] Preferably, the support seat gradually tilts upward from back to front, and the spring piece gradually tilts forward from top to bottom.

[0013] Preferably, a connecting seat is provided on the back side of the main lumbar support, and the connecting seat is pivotally connected to the second end of the support seat through a transversely extending rotating shaft so that the main lumbar support has the freedom to swing back and forth relative to the support seat, and a supporting spring is provided between the connecting seat and the support seat, and the supporting spring is located above the rotating shaft so that the supporting spring and the rotating shaft are staggered a certain distance in the height direction.

[0014] Preferably, a movable seat is provided on the main lumbar support, and the movable seat and the connecting seat are slidably matched so that the movable seat can move in the up and down directions relative to the connecting seat. An elastic element is provided between the movable seat and the connecting seat, and the elastic element is used to provide an elastic stress that always drives the movable seat upward relative to the connecting seat.

[0015] Preferably, the support seat includes a guide seat and a support column. The guide seat is connected to the backrest of the seat as the first end of the support seat. The support column is passed through the guide seat and cooperates with the guide seat in a forward and backward adjustable manner. The front end of the support column protrudes from the outside of the guide seat to form the second end of the support seat; the upper end of the elastic connecting member is connected to the bottom surface of the support column.

[0016] Preferably, the guide seat is connected to the backrest of the seat in a manner that it can be adjusted up and down.

[0017] A seat comprising the above-mentioned lumbar support assembly.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The utility model supports most areas of the user's waist through the main supporting surface on the main lumbar support, and the secondary supporting surface on the support frame can support the user's sacrum below the waist. Since the support frame is supported by an elastic connecting part, the user's sacrum will generate a backward extrusion force on the secondary supporting surface when it contacts the secondary supporting surface. The support frame can adaptively swing backward so that the secondary supporting surface can adapt to the user's body shape and sitting posture, so that the lumbar support assembly can not only support the user's waist, but also provide support for the user's sacrum to relieve fatigue of the sacrum and improve the comfort of the chair. Especially when the user leans back from a sitting position to a lying position, the secondary supporting surface on the support frame can swing upward to a certain angle with the support seat, so as to better support the user's sacrum when the user is in a lying position and avoid the sacrum being suspended in the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 It is a cross-sectional view of the utility model;

[0022] Figure 3 for Figure 2 Magnified view of point A in the middle.

[0023] Among them: 10, backrest; 20, main lumbar support; 21, movable seat; 30, auxiliary lumbar support; 31, elastic connector; 311, connecting plate; 312, spring; 313, side; 314, first slot; 32, support frame; 321, connecting part; 33, cover; 330, mating surface; 331, second slot; 34, limiting column; 40, support seat; 401, first end; 402, second end; 41, guide seat; 42, support column; 50, connecting seat; 51, support spring; 52, rotating shaft; 53, tension spring. DETAILED DESCRIPTION

[0024] Below, the present invention is further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, under the premise of no conflict, the various embodiments described below or the various technical features can be arbitrarily combined to form a new embodiment. Unless otherwise specified, the materials and equipment used in this embodiment can be purchased from the market. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and cannot be understood as limiting this application.

[0025] In the description of this application, it should be understood that the terms "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting this application. In the description of this application, "plurality" means two or more, unless otherwise specifically specified.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "connected," "connected," and "connected" should be understood in a broad sense. For example, they may refer to a fixed connection, a connection through an intermediary medium, internal communication between two components, or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0027] like Figure 1 、 2 3 is a lumbar support assembly of a chair of the present invention, which includes a support seat 40, a main lumbar support 20, and a secondary lumbar support 30, wherein the support seat 40 includes a first end 401 and a second end 402, the first end 401 is installed on the backrest 10 of the seat, and the second end 402 extends forward, the support seat 40 also includes a bottom surface located between the first end 401 and the second end 402 and placed at the bottom of the support seat 40, the main lumbar support 20 is connected to the second end 402 of the support seat 40, and the front side of the main lumbar support 20 forms a main supporting surface; the secondary lumbar support 30 includes an elastic connector 31 and a support frame 32, the upper end of the elastic connector 31 is connected to the bottom surface of the support seat 40 so that the elastic connector 31 extends downward from the bottom surface of the support seat 40, and the support frame 32 is connected to the elastic connector The connecting member 31 is arranged so that the support frame 32 is located below the main lumbar support 20, and the front side surface of the support frame 32 forms a secondary support surface located below the main support surface. When the support frame 32 is squeezed, the elastic connecting member 31 can be deformed. For example, when the secondary support surface is subjected to a backward squeezing force from the user's sacrum, the elastic connecting member 31 swings backward, causing the support frame 32 to swing backward. When the user's sacrum no longer squeezes the secondary support surface backward, the elastic connecting member 31 rebounds and enables the support frame 32 to swing forward and reset. In this way, the support frame 32 is connected to the bottom of the support seat 40 by using the elastic connecting member 31. The secondary support surface formed by the support frame 32 has a certain degree of freedom to swing forward and backward, and the elastic connecting member 31 provides elastic support force for the support frame 32.

[0028] When using the chair, most areas of the user's waist are supported by the main support surface on the main lumbar support 20, and the secondary support surface on the support frame 32 can support the user's sacrum below the waist. Since the support frame 32 is supported by the elastic connector 31, the user's sacrum will generate a backward squeezing force on the secondary support surface when it contacts the secondary support surface. The support frame 32 can adaptively swing backward so that the secondary support surface can adapt to the user's body shape and sitting posture. Then, the lumbar support assembly can not only support the user's waist, but also provide support for the user's sacrum to relieve fatigue of the sacrum and improve the comfort of the chair, especially when the user leans back from a sitting position to a lying position, the secondary support surface on the support frame 32 can swing upward to a certain angle with the support seat 40, so as to better support the user's sacrum when the user is in a lying position and avoid the sacrum being suspended in the air.

[0029] In a preferred embodiment, the elastic connector 31 includes a connecting plate 311 and a spring clip 312. The connecting plate 311 is a flat plate that matches the bottom surface of the support base 40. The connecting plate 311 is fixed to the bottom surface of the support base 40 using bolts. The spring clip 312 extends downward from the connecting plate 311, and the support frame 32 is connected to the spring clip 312. The spring clip 312 can be made of a metal plate. The length and thickness of the spring clip 312 can be appropriately adjusted to ensure that the elastic stress generated by the spring clip 312 meets the requirements for adaptive support of the user's sacrum.

[0030] In order to make the lumbar support assembly further adaptable to the body shapes of different users, the support frame 32 is fixedly connected to the spring piece 312 in an upward and downward adjustable manner. By adjusting the support frame 32 up and down, the distance between the secondary support surface on the support frame 32 and the main support surface on the main lumbar support 20 is changed, thereby adapting to users of different body shapes. The cam 330 is fixed to the cam 331 on the left and right sides of the cam 332 and the cam 333 is fixed to the cam 332 by screw thread, so that the cam 332 can be fixed to the cam 332 by screw thread, so that the cam 332 can be fixed to the cam 332 by screw thread, so that the cam 332 can be fixed to the cam 332 by screw thread, so that the cam 332 can be fixed to the cam 332 by screw thread, so that the cam 332 can be fixed to the cam 332 by screw thread, When the height of the support frame 32 needs to be adjusted, the bolts connecting the cover plate 33 and the connecting portion 321 are removed to release the limit column 34 from the cover plate 33 and the spring 312. At this time, the support frame 32 can move up and down. After the support frame 32 is moved to the appropriate position, the limit column 34 is embedded in the second slot 331 and the first slot 314 at the corresponding position. The cover plate 33 and the spring 312 are then locked together with the bolts to complete the adjustment of the height position of the support frame 32. By adjusting the height position of the support frame 32, the spacing distance between the secondary support surface and the main support surface is changed to adapt to users of different body shapes. In other embodiments, the mating surface 330 may also be formed by the surface of the connecting portion 321 facing the spring piece 312 , and in conjunction with the above-mentioned first slot 314 , second slot 331 and limiting column 34 , the relative position of the support frame 32 and the spring piece 312 can also be adjusted.

[0031] The above-mentioned support seat 40 gradually tilts upward from back to front, and the spring piece 312 gradually tilts forward from top to bottom. In this way, the secondary support surface on the front side of the support frame 32 is an inclined structure, so that the secondary support surface and the main support surface are coordinated with ergonomic requirements, further enhancing the supporting effect of the lumbar support component on the user's waist.

[0032] In another preferred embodiment, a connecting seat 50 is provided on the back side of the main lumbar support 20, and the connecting seat 50 is pivotally connected to the second end 402 of the support seat 40 through a transversely extending rotating shaft 52, so that the main lumbar support 20 can swing back and forth relative to the support seat 40, and a supporting spring 51 is further provided between the connecting seat 50 and the second end 402 of the support seat 40. The supporting spring 51 is located above the rotating shaft 52, and the supporting spring 51 and the rotating shaft 52 are staggered a certain distance in the height direction, so that the elastic stress generated by the supporting spring 51 has a certain torque after being applied to the connecting seat 50, so that the supporting spring 51 can apply an elastic supporting force to the main lumbar support 20, and the user's waist can squeeze the main supporting surface of the main lumbar support 20, so that the main lumbar support 20 can swing back and forth adaptively, so as to automatically adjust the main supporting surface of the main lumbar support 20 to the optimal support angle. The main lumbar support 20 is provided with a movable seat 21. The movable seat 21 slidably engages with the connecting seat 50, allowing the main lumbar support 20 to move vertically relative to the connecting seat 50 along with the movable seat 21. An elastic element is provided between the movable seat 21 and the connecting seat 50. This elastic element can specifically be a tension spring 53. One end of the tension spring 53 is connected to the movable seat 21 and the other end is connected to the connecting seat 50. The elastic stress provided by the tension spring 53 constantly pulls the movable seat 21 upward, ensuring that the movable seat 21 always maintains an upward movement trend. When using the chair, the user's waist exerts downward pressure on the main lumbar support 20, allowing the movable seat 21 to move downward along with the main lumbar support 20, allowing the main lumbar support 20 to automatically adapt to the user's sitting posture and body shape in the vertical direction. It should be noted that the elastic element is not limited to the tension spring 53. It can also be a spring or other elastic component provided between the movable seat 21 and the connecting seat 50.

[0033] In the present invention, the support seat 40 includes a guide seat 41 and a support column 42. The guide seat 41 is connected to the backrest 10 of the seat as the first end 401 of the support seat 40. The support column 42 is connected to the guide seat 41 and cooperates with the guide seat 41 in a manner that can be adjusted forward and backward. The front end of the support column 42 protrudes from the outside of the guide seat 41 to form the second end 402 of the support seat 40. The upper end of the elastic connecting member 31 of the present invention is fixedly connected to the bottom surface of the support column 42. The support seat 40 is composed of the guide seat 41 and the support column 42. By adjusting the support column 42 forward and backward, the front and rear positions of the main lumbar support 20 and the auxiliary lumbar support 30 can be adjusted. The guide seat 41 is connected to the backrest 10 of the seat in a manner that can be adjusted up and down, so that the up and down positions of the main lumbar support 20 and the auxiliary lumbar support 30 can be adjusted.

[0034] The seat of the present invention includes the above-mentioned lumbar support assembly of the seat. Other structures of the seat are the same as those in the prior art and will not be described in detail here.

[0035] Finally, it should be noted that the above-mentioned implementation mode is only an optional embodiment of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. The lumbar support assembly of the seat is characterized in that: It includes a support base installed on the seat back, a main lumbar support, and a secondary lumbar support located below the main lumbar support; The support base includes a first end connected to the seat back, a second end located at the front end of the support base, and a bottom surface located between the first end and the second end and at the bottom of the support base; The main lumbar support is connected to the second end of the support base, and the front side of the main lumbar support forms the main support surface; The secondary lumbar support includes an elastic connector and a support frame. The upper end of the elastic connector is connected to the bottom surface of the support seat. The support frame is connected to the elastic connector and its front side forms a secondary support surface located below the main support surface. The support frame can swing with the deformation of the elastic connector so that the secondary support surface has the freedom to swing back and forth.

2. The lumbar support assembly of a seat according to claim 1, characterized in that The elastic connecting member includes a connecting plate and a spring piece. The connecting plate is fixedly connected to the bottom surface of the support seat. The spring piece extends downward from the connecting plate. The support frame is connected to the spring piece.

3. The lumbar support assembly of a seat according to claim 2, wherein: The support frame is fixedly connected to the spring piece in an up-and-down adjustable manner.

4. The lumbar support assembly of a seat according to claim 3, wherein: A plurality of transversely extending first card slots are provided on one side of the spring sheet, and the plurality of first card slots are arranged along the extension direction of the spring sheet. A connecting portion and a cover plate opposite to the connecting portion are provided on the support frame, and the connecting portion and the cover plate are respectively placed on the front and rear sides of the spring sheet and are fixed together by bolts; a mating surface is formed on the surface of the cover plate facing the spring sheet or the surface of the connecting portion facing the spring sheet, and a transversely extending second card slot is provided on the mating surface, and the second card slot and one of the first card slots form an insertion slot, and a limiting column is passed through the insertion slot to limit the freedom of the support frame to move relative to the spring sheet in the extension direction of the spring sheet.

5. The lumbar support assembly of a seat as claimed in claim 2, characterized in that: The support seat gradually tilts upward from back to front, and the spring piece gradually tilts forward from top to bottom.

6. The lumbar support assembly of a seat according to claim 1, wherein: A connecting seat is provided on the back of the main lumbar support, and the connecting seat is pivotally connected to the second end of the support seat through a transversely extending rotating shaft so that the main lumbar support has the freedom to swing back and forth relative to the support seat. A supporting spring is provided between the connecting seat and the support seat, and the supporting spring is located above the rotating shaft so that the supporting spring and the rotating shaft are staggered a certain distance in the height direction.

7. The lumbar support assembly of a seat according to claim 6, wherein: A movable seat is provided on the main lumbar support, and the movable seat and the connecting seat are slidably matched so that the movable seat can move in the up and down directions relative to the connecting seat. An elastic element is provided between the movable seat and the connecting seat, and the elastic element is used to provide an elastic stress that always drives the movable seat upward relative to the connecting seat.

8. The lumbar support assembly of a seat according to claim 1, wherein: The support seat includes a guide seat and a support column. The guide seat is connected to the backrest of the seat as the first end of the support seat. The support column is passed through the guide seat and cooperates with the guide seat in a forward and backward adjustable manner. The front end of the support column protrudes from the outside of the guide seat to form the second end of the support seat; the upper end of the elastic connecting member is connected to the bottom surface of the support column.

9. The lumbar support assembly of a seat according to claim 8, wherein: The guide seat is connected to the backrest of the seat in an up-and-down adjustable manner.

10. A seat, characterized in that A lumbar support assembly for a seat comprising the seat according to any one of claims 1 to 9.

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