Adaptive lumbar support component of seat and seat

Abstract

The utility model discloses an adaptive lumbar support assembly of a seat and a seat, wherein the adaptive lumbar support assembly of the seat comprises a lumbar support, a connecting seat and a fixing seat; the lumbar support is slidably mounted on the connecting seat so that the lumbar support can move relative to the connecting seat in the height direction, a first elastic element is arranged between the lumbar support and the connecting seat, the first elastic element is used to provide an elastic stress applied to the lumbar support so that the lumbar support always maintains a tendency to move upward relative to the connecting seat; the connecting seat is pivotally connected to the fixing seat so that the connecting seat can swing forward and backward relative to the fixing seat, a second elastic element is arranged between the connecting seat and the fixing seat, the second elastic element is used to provide an elastic stress applied to the connecting seat so that the connecting seat always maintains a tendency to swing forward relative to the fixing seat. The utility model can adapt to the user's body shape and sitting posture, simplifies the structure of the lumbar support assembly, and improves the convenience of using the seat.

Description

Technical Field

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

[0002] Traditional seats usually support the user's back through the backrest. The user's waist is in a suspended state and cannot be well supported, resulting in the waist muscles not being properly stretched and relaxed for a long time, which is prone to backache and back pain, and has a great impact on the user's health. In order to improve the defects of the above-mentioned traditional seats, the existing seats usually have a lumbar support on the backrest to provide support for the user's waist. The existing seat lumbar support includes two structures: fixed position and adjustable position. The fixed position lumbar support can only provide support for the user's waist at a fixed position. The user cannot adjust it according to his body shape and sitting posture, which is difficult to meet the user's personalized needs; the adjustable position lumbar support can be adjusted to multiple different positions according to needs during use. Although it can support the user's waist at multiple different positions, the user often needs to manually adjust it multiple times, resulting in a cumbersome use process. Although it can support the user's waist at multiple different positions, it is limited by the structural limitations of the gear adjustment mechanism itself. The lumbar support adjustment positions of adjacent gears still have a certain distance, and it is difficult to accurately adjust the lumbar support to the best state. Utility Model Content

[0003] The utility model aims to provide an adaptive lumbar support component of a seat and a seat. When the seat is used, the user can make the lumbar support component provide support for the user's waist in an optimal supporting state without any operation.

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

[0005] The seat's adaptive lumbar support assembly includes a lumbar support, a connecting seat, and a fixed seat;

[0006] The lumbar support is slidably mounted on the connecting seat so that the lumbar support can move relative to the connecting seat in the height direction. A first elastic element is arranged between the lumbar support and the connecting seat, and the first elastic element is used to provide an elastic stress applied to the lumbar support so that the lumbar support always maintains a tendency to move upward relative to the connecting seat.

[0007] The connecting seat is pivotally connected to the fixing seat so that the connecting seat can swing forward and backward relative to the fixing seat. A second elastic element is arranged between the connecting seat and the fixing seat. The second elastic element is used to provide an elastic stress applied to the connecting seat so that the connecting seat always maintains a tendency to swing forward relative to the fixing seat.

[0008] Preferably, a guide seat is provided on the lumbar support, a guide rail extending in the height direction is provided on the guide seat, a guide groove is provided on the connecting seat, and the guide rail is slidably embedded in the guide groove.

[0009] Preferably, the guide seat is provided with a through groove extending in the height direction, and the parts of the guide seat located on both sides of the through groove respectively form a guide rail, the connecting seat includes a first connecting seat and a second connecting seat respectively located on both sides of the guide seat, the first connecting seat is provided with a slider slidably embedded in the through groove, the second connecting seat and the slider are detachably fixed together, and the part between the second connecting seat and the first connecting seat forms two guide grooves respectively located on both sides of the slider, and the two guide rails are respectively slidably embedded in the two guide grooves.

[0010] Preferably, the first elastic element is a tension spring, the upper end of the tension spring is hung on the connecting seat, and the lower end of the tension spring is hung on the bottom of the guide seat.

[0011] Preferably, a receiving groove extending in the height direction is formed between the slider and the second connecting seat, the tension spring is embedded in the receiving groove and the lower end of the tension spring passes through the lower end of the receiving groove.

[0012] Preferably, the second elastic element is a spring, one end of the spring abuts against the fixed seat and the other end abuts against the connecting seat, a rotating shaft is provided on the fixed seat, the connecting seat is installed on the rotating shaft to pivot the connecting seat and the fixed seat together, and the rotating shaft is located below one end of the fixed seat close to the connecting seat so that the rotating shaft is located below the spring and staggered a certain distance from the spring in the height direction.

[0013] Preferably, a groove is provided on one end surface of the fixing seat close to the connecting seat, and a boss is provided on the surface of the connecting seat facing the fixing seat. The spring is placed in the groove, with one end of the spring resting on the bottom surface of the groove and the other end being sleeved on the boss.

[0014] Preferably, the fixed seat is provided with a limit groove which is recessed from its end surface close to the connecting seat towards the direction away from the connecting seat, and the top and bottom surfaces of the limit groove respectively form a limit surface. The connecting seat is provided with a limit boss embedded in the limit groove, and the limit boss swings between the two limit surfaces to limit the swing amplitude of the connecting seat relative to the fixed seat.

[0015] Preferably, a retaining wall is respectively provided on both sides of the connecting seat, the fixed seat is confined between the two retaining walls, a limiting groove is respectively provided on both side surfaces of the fixed seat, a limiting boss is respectively provided on the two retaining walls, and the two limiting bosses are respectively embedded in the two limiting grooves; a first axial hole extending from one side surface to the other side surface is provided on the fixed seat, a second axial hole is respectively provided on the two retaining walls, and the rotating shaft is a locking screw that crosses the first axial hole and the two second axial holes.

[0016] A seat, including the above-mentioned adaptive lumbar support component of the seat.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] In the utility model, through the sliding cooperation between the lumbar support and the connecting seat, the rotational cooperation between the connecting seat and the fixed seat, and the two elastic elements, the lumbar support can swing backward and slide downward when pushed by the user's waist, so that the lumbar support can provide support for the user's waist in a most suitable state. The lumbar support can stay at any position within its range of motion to adapt to the user's body shape and sitting posture. There is no need to adopt a complicated shifting mechanism, which simplifies the structure of the lumbar support assembly. The lumbar support assembly can be changed to the optimal support state without actively operating the lumbar support assembly, thereby improving the convenience of seat use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of a use state of the utility model;

[0021] Figure 3 This is another schematic diagram of the use state of the utility model;

[0022] Figure 4 It is a cross-sectional view of the utility model;

[0023] Figure 5 for Figure 4 AA section view;

[0024] Figure 6 for Figure 1 A schematic diagram of the structure of the middle fixed seat;

[0025] Figure 7 for Figure 1 Schematic diagram of the structure of the first connecting socket.

[0026] Among them: 10, lumbar support; 11, guide seat; 111, through groove; 112, guide rail; 300, connecting seat; 20, fixed seat; 201, front end surface; 202, first axial hole; 21, groove; 22, limiting groove; 221, limiting surface; 222, limiting surface; 30, first connecting seat; 301, second axial hole; 31, boss; 32, limiting boss; 33, slider; 34, groove; 35, retaining wall; 40, second connecting seat; 50, spring; 60, tension spring. DETAILED DESCRIPTION

[0027] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described. 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. Except for special instructions, 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 the present application, and cannot be understood as limiting the present application.

[0028] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In the description of the present application, "plurality" means two or more, unless otherwise precisely and specifically specified.

[0029] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be connected through an intermediary medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] like Figure 1 , 2As shown in Figures 3, 4, 5, 6 and 7, an adaptive lumbar support assembly of a seat of the utility model comprises a lumbar support 10, a connecting seat 300 and a fixed seat 20. The lumbar support 10 is slidably mounted on the connecting seat 300 so that the lumbar support 10 has the freedom to move up and down relative to the connecting seat 300 in the height direction, and a tension spring 60 is arranged between the lumbar support 10 and the connecting seat 300. One end of the tension spring 60 is hung on the connecting seat 300 and the other end is hung on the lumbar support 10. The tension spring 60 is used to provide an elastic stress applied to the lumbar support 10 so that the lumbar support 10 always maintains a tendency to move upward relative to the connecting seat 300. When the lumbar support 10 is in a state of not being subjected to external force, the elastic stress of the tension spring 60 can make the lumbar support 10 in a high position relative to the connecting seat 300. When the lumbar support 10 is subjected to downward external force, the lumbar support 10 slides downward relative to the connecting seat 300 and the tension spring 60 is stretched. The connecting seat 300 is pivotally connected to the fixing seat 20 so that the connecting seat 300 can swing forward and backward relative to the fixing seat 20. A spring 50 is arranged between the connecting seat 300 and the fixing seat 20. The spring 50 applies an elastic stress to the connecting seat 300 so that the connecting seat 300 always maintains a tendency to swing forward relative to the fixing seat 20. When the lumbar support 10 is subjected to a backward external force, the backward external force is transmitted to the connecting seat 300, and the connecting seat 300 will swing backward under the action of the external force, causing the spring 50 to be compressed.

[0031] In other embodiments, the tension spring 60 and spring 50 mentioned above may be replaced by other elastic elements. For example, the tension spring 60 may be replaced by a general spring or an elastic rubber block, and the spring 50 may be replaced by an elastic rubber block or a torsion spring installed at the rotation axis of the connecting seat 300 and the fixing seat 20.

[0032] Figure 2 , 3 The use state of the utility model is shown. Figure 2 In the state shown, the adaptive lumbar support assembly is in a natural state. At this time, the lumbar support 10 is in a high position relative to the connecting seat 300 through the tension spring 60, and the connecting seat 300 is in the most forward position through the spring 50, as shown in FIG. Figure 3As shown, when the user sits on the seat cushion, his waist exerts an oblique downward pressure on the lumbar support 10, pushing the lumbar support 10 backward, and the lumbar support 10 swings backward at a certain angle relative to the fixed seat 20 along with the connecting seat 300. At the same time, the lumbar support 10 slides downward relative to the connecting seat 300; after the lumbar support 10 swings backward at a certain angle and slides downward for a certain distance, the lumbar support 10 provides support for the user's waist in the most appropriate state, and the elastic stress provided by the tension spring 60 and the spring 50 increases after a certain deformation. The increased elastic stress ensures that the lumbar support 10 will not continue to swing backward and slide downward. When the user stands up from the seat, the lumbar support 10 is no longer pushed, and the elastic stress provided by the tension spring 60 and the spring 50 causes the connecting seat 300 and the lumbar support 10 to return to the position as shown in the figure. Figure 2 Status shown.

[0033] In the utility model, through the sliding cooperation between the lumbar support 10 and the connecting seat 300, the rotational cooperation between the connecting seat 300 and the fixed seat 20, and the two elastic elements, the lumbar support 10 can swing backward and slide downward when pushed by the user's waist, so that the lumbar support 10 can provide support for the user's waist in a most suitable state. The lumbar support 10 can stay at any position within its range of activity to adapt to the user's body shape and sitting posture. There is no need to adopt a complicated shifting mechanism, which simplifies the structure of the lumbar support assembly. The lumbar support assembly can be transformed to the optimal support state without actively operating the lumbar support assembly, thereby improving the convenience of seat use.

[0034] See also Figure 1 , 25. In a preferred embodiment, a guide seat 11 is provided on the lumbar support 10. The guide seat 11 is provided at a lower position in the middle of the lumbar support 10 in the horizontal direction. A guide rail 112 extending along the height direction is provided on the guide seat 11. A guide groove is provided on the connecting seat 300. The guide rail 112 is slidably embedded in the guide groove so that the lumbar support 10 can slide relative to the connecting seat 300 in the height direction. Specifically, a through groove 111 extending in the height direction is provided on the guide seat 11, and the through groove 111 is arranged in the middle part of the width direction of the guide seat 11, and the parts of the guide seat 11 located on both sides of the through groove 111 respectively form a guide rail 112; in order to facilitate the assembly of the connecting seat 300 and the guide seat 11, the connecting seat 300 is arranged to be a split structure, which includes a first connecting seat 30 and a second connecting seat 40, wherein the first connecting seat 30 is located on the side of the guide seat 11 close to the fixed seat 20, and the second connecting seat 40 is located on the side of the guide seat 11 away from the fixed seat 20, and a slider 33 slidably embedded in the through groove 111 is provided on the first connecting seat 30, and the width of the slider 33 is equivalent to the width of the through groove 111, and the second connecting seat 40 is fixed to the slider 33 by screws or other detachable connection methods, and the part between the second connecting seat 40 and the first connecting seat 30 forms two guide grooves respectively located on both sides of the slider 33, and the two guide rails 112 on both sides of the through groove 111 are respectively slidably embedded in the two guide grooves. A groove 34 is provided on the slider 33, and the groove 34 extends to the lower edge of the slider 33 to form an opening. After the slider 33 and the second connecting seat 40 are fixed together, the surface of the second connecting seat 40 facing the slider 33 and the groove 34 form a receiving groove, and the tension spring 60 is embedded in the receiving groove. A hanging column is provided at the top of the groove 34 and the bottom of the guide seat 11 respectively. The upper end of the tension spring 60 is hung on the hanging column located at the top of the groove 34, and the lower end is hung on the hanging column located at the bottom of the guide seat 11. When a spring is used as an elastic element to replace the tension spring 60, the upper end of the spring can be pressed against the top of the guide seat 11, and the lower end can be pressed against the first connecting seat 30 or the second connecting seat 40, so that the guide seat 11 is always subjected to the upward elastic thrust from the spring.

[0035] See also Figure 4 , 6As shown in Figures 7 and 8, in another embodiment, the spring 50 is located at the front end of the fixed seat 20, one end of the spring 50 abuts against the fixed seat 20, and the other end abuts against the first connecting seat 30. A rotating shaft is provided on the fixed seat 20, and the connecting seat 300 is installed on the rotating shaft to pivotally connect the connecting seat 300 with the fixed seat 20. Specifically, the first connecting seat 30 can be installed on the rotating shaft, and the rotating shaft is located below one end of the fixed seat 20 close to the first connecting seat 30 (that is, the rotating shaft is located at the front end of the fixed seat 20), so that the rotating shaft is located below the spring 50 and is staggered with the spring 50 in the height direction by a certain distance, so that the elastic stress generated by the spring 50 has a sufficient force arm to push the first connecting seat 30. A groove 21 extending backward is provided on the front end surface 201 of the fixing seat 20, and a boss 31 is protruding from the surface of the first connecting seat 30 facing the fixing seat 20. The spring 50 is placed in the groove 21, with one end of the spring 50 abutting against the bottom surface of the groove 21 and the other end being sleeved on the boss 31 to prevent the spring 50 from being separated from the first connecting seat 30 and the fixing seat 20, so that the spring 50 can stably provide elastic stress. In addition, a limiting groove 22 is also provided on the fixed seat 20, which is recessed by its front end surface 201 in the direction away from the connecting seat 300, and the top surface and bottom surface of the limiting groove 22 respectively form a limiting surface 221 and a limiting surface 222. A limiting boss 32 is provided on the connecting seat 300, and the limiting boss 32 is embedded in the limiting groove 22. The distance between the upper edge and the lower edge of the limiting boss 32 is smaller than the distance between the limiting surface 221 and the limiting surface 222, so that the limiting boss 32 can swing between the limiting surface 221 and the limiting surface 222. When the connecting seat 300 rotates relative to the fixed seat 20, the limiting mechanism composed of the limiting boss 32, the limiting surface 221 and the limiting surface 222 is used to limit the maximum swing amplitude of the connecting seat 300 relative to the fixed seat 20. A retaining wall 35 is provided on both sides of the first connection seat 30 of the connection seat 300, and the front end of the fixing seat 20 is embedded between the two retaining walls 35. The two retaining walls 35 cooperate with the fixing seat 20 to prevent the connection seat 300 from moving laterally relative to the fixing seat 20. A limiting groove 22 is provided on both sides of the fixing seat 20, and a limiting boss 32 is provided on the two retaining walls 35. The two limiting bosses 32 are respectively embedded in the two limiting grooves 22; the fixing seat 20 is provided with a first shaft hole 202 extending from one side to the other side, and a second shaft hole 301 is provided on the two retaining walls 35. The rotating shaft is a locking screw that crosses the first shaft hole 202 and the two second shaft holes 301. The locking screw can facilitate the assembly of the fixing seat 20 and the first connection seat 30, and the first connection seat 30 can be pivotally connected to the fixing seat 20. When a torsion spring is used as an elastic element instead of the spring 50, the torsion spring can be sleeved on the locking screw.

[0036] The seat of the utility model comprises the above-mentioned adaptive lumbar support assembly of the seat, and other structures of the seat are the same as those in the prior art and will not be described in detail here.

[0037] Finally, it should be noted that the above-mentioned implementation modes are only optional embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. The seat's adaptive lumbar support assembly is characterized by: Including lumbar support, connecting seat and fixed seat; The lumbar support is slidably mounted on the connecting seat so that the lumbar support can move relative to the connecting seat in the height direction. A first elastic element is arranged between the lumbar support and the connecting seat, and the first elastic element is used to provide an elastic stress applied to the lumbar support so that the lumbar support always maintains a tendency to move upward relative to the connecting seat. The connecting seat is pivotally connected to the fixing seat so that the connecting seat can swing forward and backward relative to the fixing seat. A second elastic element is arranged between the connecting seat and the fixing seat. The second elastic element is used to provide an elastic stress applied to the connecting seat so that the connecting seat always maintains a tendency to swing forward relative to the fixing seat.

2. The adaptive lumbar support assembly of a seat as claimed in claim 1, characterized in that: A guide seat is arranged on the waist support, a guide rail extending in the height direction is arranged on the guide seat, a guide groove is arranged on the connecting seat, and the guide rail is slidably embedded in the guide groove.

3. The adaptive lumbar support assembly of a seat as claimed in claim 2, characterized in that: The guide seat is provided with a through groove extending in the height direction, and the parts of the guide seat located on both sides of the through groove form a guide rail respectively. The connecting seat includes a first connecting seat and a second connecting seat respectively located on both sides of the guide seat, and the first connecting seat is provided with a slider slidably embedded in the through groove. The second connecting seat and the slider are detachably fixed together, and the part between the second connecting seat and the first connecting seat forms two guide grooves respectively located on both sides of the slider, and the two guide rails are slidably embedded in the two guide grooves respectively.

4. The adaptive lumbar support assembly of a seat as claimed in claim 3, characterized in that: The first elastic element is a tension spring, the upper end of which is hung on the connecting seat, and the lower end of which is hung on the bottom of the guide seat.

5. The adaptive lumbar support assembly of a seat as claimed in claim 4, characterized in that: A receiving groove extending in the height direction is formed between the sliding block and the second connecting seat. The tension spring is embedded in the receiving groove and the lower end of the tension spring passes through the lower end of the receiving groove.

6. The adaptive lumbar support assembly of a seat as claimed in claim 1, characterized in that: The second elastic element is a spring, one end of the spring abuts against the fixed seat, and the other end abuts against the connecting seat. A rotating shaft is provided on the fixed seat, and the connecting seat is installed on the rotating shaft to pivot the connecting seat and the fixed seat together. The rotating shaft is located below one end of the fixed seat close to the connecting seat so that the rotating shaft is located below the spring and staggered a certain distance from the spring in the height direction.

7. The adaptive lumbar support assembly of a seat as claimed in claim 6, characterized in that: A groove is arranged on one end surface of the fixing seat close to the connecting seat, and a convex column is arranged on the surface of the connecting seat facing the fixing seat. The spring is placed in the groove, one end of which abuts against the bottom surface of the groove and the other end is sleeved on the convex column.

8. The adaptive lumbar support assembly of a seat as claimed in claim 6, characterized in that: The fixed seat is provided with a limiting groove which is recessed from its end surface close to the connecting seat toward the direction away from the connecting seat. The top surface and the bottom surface of the limiting groove respectively form a limiting surface. The connecting seat is provided with a limiting boss embedded in the limiting groove. The limiting boss swings between the two limiting surfaces to limit the swinging amplitude of the connecting seat relative to the fixed seat.

9. The adaptive lumbar support assembly of a seat as claimed in claim 8, characterized in that: A retaining wall is provided on both sides of the connecting seat, the fixing seat is limited between the two retaining walls, a limiting groove is provided on both sides of the fixing seat, a limiting boss is provided on the two retaining walls, and the two limiting bosses are respectively embedded in the two limiting grooves; a first axial hole extending from one side to the other side is provided on the fixing seat, a second axial hole is provided on the two retaining walls, and the rotating shaft is a locking screw that crosses the first axial hole and the two second axial holes.

10. A seat, characterized in that: An adaptive lumbar support assembly for a seat comprising any one of claims 1-9.

Images