Adjustable waist support of seat and seat

Abstract

The utility model discloses an adjustable waist support of a seat and the seat. The adjustable waist support of the seat comprises a mounting seat, two swinging seats, an elastic supporting piece, a sliding seat and a locking piece, the two swing seats are hinged to the two sides of the mounting seat respectively, the axes, rotating relative to the mounting seat, of the swing seats are consistent with the vertical direction, the elastic supporting piece is located on the front side of the mounting seat and comprises a first connecting part and two second connecting parts, and the portions, located between the first connecting part and the two second connecting parts, of the elastic supporting piece form deformation parts respectively; the sliding seat is movably mounted on the mounting seat and is fixedly connected to the first connecting part of the elastic supporting piece; the swing seat is fixed on the second connecting part; the locking piece is arranged on the installation base and used for being combined with the sliding base and separated from the sliding base. The waist support is simple and convenient to adjust, and can provide stable support for the waist of a user.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, specifically to an adjustable lumbar support and seat. Background Technology

[0002] To improve chair comfort, existing office chairs and gaming chairs are usually equipped with lumbar supports to provide support for the user's lower back and prevent fatigue caused by unsupported lower back. To ensure the lumbar support provides support for the middle and sides of the user's lower back, some lumbar supports are designed with a three-piece structure, including a main lumbar support and two secondary lumbar supports. The two secondary lumbar supports are rotatably connected to both sides of the main lumbar support. During use, the secondary lumbar supports can be rotated inwards and outwards to adjust to the optimal support position for the user's lower back. However, in actual use, this adjustable lumbar support often requires multiple adjustments to achieve the desired position, making the adjustment process rather cumbersome. Furthermore, during use, when the user applies significant pressure to the secondary lumbar supports, they may swing abnormally backwards, resulting in the lumbar support failing to provide stable support for the user's lower back. Utility Model Content

[0003] The purpose of this invention is to provide an adjustable lumbar support and seat, which is simple and convenient to adjust and can provide stable support for the user's waist.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The adjustable lumbar support of the seat includes a mounting base, two swing seats, an elastic support, a sliding seat, and a locking mechanism;

[0006] Two swing seats are respectively hinged to both sides of the mounting base. The axis of rotation of the swing seats relative to the mounting base is consistent with the up and down direction. The elastic support is located on the front side of the mounting base. The elastic support includes a first connecting part located in the middle and two second connecting parts located on both sides. The part of the elastic support between the first connecting part and the two second connecting parts forms a deformable part.

[0007] The sliding seat is movably mounted on the mounting base so that the sliding seat can move relative to the mounting base in the front-back direction. The sliding seat is fixedly connected to the first connecting part of the elastic support. The two swing seats are respectively fixed to the two second connecting parts of the elastic support. The axis of rotation of the swing seats relative to the mounting base is located inside the second connecting part.

[0008] The locking element is provided on the mounting base for engaging with the slide to lock the slide to the mounting base and for disengaging from the slide to allow the slide to move relative to the mounting base in the back-and-forth direction.

[0009] Preferably, the elastic support is plate-shaped, and a flexible support pad that can deform with the elastic support is covered on the front side of the elastic support. The flexible support pad is fixed to the elastic support by adhesive bonding.

[0010] Preferably, the mounting base has a rearwardly extending guide portion in the middle, and a sliding groove with a front opening and a rearward extending groove is provided on the guide portion. The sliding seat slides through the front opening of the sliding groove and is connected in the sliding groove. A locking member is provided on the guide portion.

[0011] Preferably, the lower surface of the guide portion is provided with an upwardly recessed mounting groove that connects to the slide groove. The locking member is movably embedded in the mounting groove so that the locking member can move between an upper locked position and a lower unlocked position. The top surface of the locking member is provided with a plurality of first protrusions arranged in the front-back direction, and the lower surface of the slide seat is provided with a plurality of second protrusions arranged in the front-back direction. When the locking member is in the locked position, the plurality of first protrusions and the plurality of second protrusions engage with each other. When the locking member is in the unlocked position, the plurality of first protrusions and the plurality of second protrusions separate.

[0012] Preferably, a handle located below the locking member is pivotally connected to the guide portion. The handle is provided with a boss that cooperates with the locking member. The handle is used to drive the boss to swing between a first position and a second position. When the boss is in the first position, it pushes the locking member upward to keep the locking member in the locked position. When the boss is in the second position, it releases the locking member so that the locking member can move downward in the mounting groove.

[0013] Preferably, a guide groove extending in the front-back direction is provided on both sides of the guide portion, and a guide post protrudes from both sides of the sliding seat, with the two guide posts slidably embedded in the two guide grooves.

[0014] Preferably, a connecting plate is provided at the front end of the sliding seat, and the connecting plate is fixedly connected to the first connecting part of the elastic support by bolts.

[0015] Preferably, the swing seat includes a support plate and a mounting plate located on the front side of the support plate. The front side of the mounting plate forms a mounting plane that fits against the rear side of the second connecting part of the elastic support. The support plate, the mounting plate, and the second connecting part are fixedly connected together by bolts.

[0016] Preferably, the swing seat is provided with a bushing extending in the vertical direction, a limiting groove is provided on the periphery of the bushing, the two side walls of the limiting groove are offset along the circumference of the bushing, a rotating shaft is provided on the mounting seat, the rotating shaft passes through the bushing to hinge the swing seat to the mounting seat, and a limiting block is provided on the mounting seat embedded in the limiting groove.

[0017] Seats, including the adjustable lumbar support of the aforementioned seats.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] In this invention, the elastic support member can be deformed backward by the backward pressure applied by the user's waist. After deformation, the elastic support member wraps around the user's waist, providing support for the middle and sides of the user's waist. The backward pressure of the user's waist causes the elastic support member to adaptively deform into a shape that matches the user's waist, thereby automatically adjusting the lumbar support to the optimal support state. The sliding seat and the mounting seat are locked by the locking member, which keeps the lumbar support in the optimal support state. The adjustment process is simple and convenient. Furthermore, during the use of the seat, because the deformation state of the elastic support member is locked by the locking member, it will not deform when subjected to other external forces, thus providing stable support for the user's waist. Attached Figure Description

[0020] Figure 1 This is an installation diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of this utility model;

[0022] Figure 3 for Figure 2 AA section view;

[0023] Figure 4 This is a schematic diagram of the usage state of this utility model;

[0024] Figure 5 for Figure 1 Installation diagram of the swing seat and mounting base;

[0025] Figure 6 for Figure 2 BB section view;

[0026] Figure 7 This is a schematic diagram showing the locking component of this utility model detached from the sliding seat;

[0027] Wherein: 10, mounting base; 101, limiting block; 11, guide part; 12, sliding groove; 13, mounting groove; 14, guide groove; 20, elastic support member; 21, first connecting part; 22, second connecting part; 23, deformable part; 30, swing seat; 31, support plate; 32, mounting plate; 321, mounting plane; 33, bushing; 331, limiting groove; 40, flexible support pad; 50, sliding seat; 51, connecting plate; 52, second protruding tooth; 53, guide post; 60, locking member; 61, first protruding tooth; 70, handle; 71, boss. Detailed Implementation

[0028] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are all commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0029] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, or a connection within two elements or an interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] like Figure 1 , 2As shown in figures 3, 4, 5, 6, and 7, this utility model discloses an adjustable lumbar support for a seat. It includes a mounting base 10, two swing seats 30, an elastic support member 20, a sliding seat 50, and a locking member 60. The mounting base 10 serves as the mounting foundation for the entire lumbar support. The two swing seats 30 are hinged to both sides of the mounting base 10. The axis of rotation of the swing seats 30 relative to the mounting base 10 is aligned with the vertical direction. The two swing seats 30 and the mounting base 10 together form a deformable linkage mechanism. The elastic support member 20 is located at the front of the mounting base 10. The elastic support member 20 includes a first connecting portion 21 located in its middle and two second connecting portions 22 located on its sides. A deformable portion 23 is formed on the elastic support member 20 at a position between the first connecting portion 21 and the two second connecting portions 22. Thus, a deformable portion 23 is formed on each side of the first connecting portion 21. The elastic support member 20 can be made of... Made of plastic, metal sheet, or other materials with a certain elastic deformation capability, the elastic support 20 can deform at the two deformation parts 23 and rebound to its initial state after the external force is removed; the sliding seat 50 is movably mounted on the mounting base 10, allowing the sliding seat 50 to move relative to the mounting base 10 in the front-back direction, and the sliding seat 50 is fixedly connected to the first connecting part 21 of the elastic support 20; two swing seats 30 are respectively fixedly connected to the two second connecting parts 22 of the elastic support 20, and the axis of rotation of the swing seat 30 relative to the mounting base 10 is located inside the second connecting part 22; the locking member 60 is provided on the mounting base 10, and by engaging with the sliding seat 50, the sliding seat 50 and the mounting base 10 can be locked together, and when the locking member 60 is separated from the sliding seat 50, the sliding seat 50 can move relative to the mounting base 10 in the front-back direction.

[0032] like Figure 4As shown, when the lumbar support of this utility model is in use, the locking member 60 is separated from the sliding seat 50, and the middle position of the user's waist is leaned back. This applies backward pressure to the first connecting part 21 of the elastic support member 20. The first connecting part 21, together with the sliding seat 50, moves backward relative to the mounting base 10, causing the two deformable parts 23 of the elastic support member 20 to deform. The two second connecting parts 22 of the deformed elastic support member 20 pull the two swing seats 30 inward, causing the two swing seats 30 to swing inward relative to the mounting base 10. This allows the two swing seats 30 to provide support to both sides of the user's waist. Based on the support of the middle position of the user's waist by the elastic support member 20, the elastic support member 20 can form a wraparound structure at the user's waist to wrap around the user's waist. Finally, the locking member 60 locks the sliding seat 50 and the mounting base 10, thus completing the adjustment of the lumbar support. The backward pressure applied to the user's waist causes the elastic support... When component 20 deforms backward, the elastic stress of elastic support component 20 increases accordingly as the deformation gradually increases. When the elastic stress of elastic support component 20 increases to be equivalent to the backward pressure of the user's waist, the deformation of elastic support component 20 tends to stabilize, thereby stabilizing the inward swing angle of the two swing seats 30. Thus, after deformation, elastic support component 20 can wrap around the user's waist, providing support for the middle and sides of the user's waist. In other words, by utilizing the backward pressure of the user's waist, elastic support component 20 adaptively deforms into a shape that matches the user's waist, thereby automatically adjusting the lumbar support to the optimal support state. By locking the sliding seat 50 and the mounting seat 10 with locking component 60, the lumbar support can be kept in the optimal support state. The adjustment process is simple and convenient. Furthermore, during the use of the seat, since the deformation state of elastic support component 20 is locked by locking component 60, it will not deform when subjected to other external forces, thus providing stable support for the user's waist.

[0033] In this invention, the elastic support member 20 is plate-shaped, and a flexible support pad 40 is covered on the front side of the elastic support member 20. The flexible support pad 40 can deform with the elastic support member 20 and is made of molded cotton, which is adhesively fixed to the front side of the elastic support member 20. In other embodiments, the flexible support pad 40 can also be made of cotton cloth or leather wrapped around flexible materials such as sponge or cotton. The flexible support pad 40 contacts the user's waist to improve the comfort of the lumbar support.

[0034] A rearwardly extending guide portion 11 is provided in the middle of the mounting base 10. A sliding groove 12 extending in the front-rear direction is provided on the guide portion 11. An opening is formed at the front end of the sliding groove 12. The sliding seat 50 is inserted into the sliding groove 12 through the front opening of the sliding groove 12 and can slide in the extending direction of the sliding groove 12. A locking member 60 is installed on the guide portion 11 for locking or releasing the sliding seat 50. Specifically, a recessed mounting groove 13 is provided on the lower surface of the guide portion 11. The top of the mounting groove 13 is connected to the sliding groove 12. The locking member 60 is movably embedded in the mounting groove 13, so that the locking member 60 can move relative to the mounting base 10 in the vertical direction between an upper locked position and a lower unlocked position. The top surface of the locking member 60 is provided with a plurality of first protrusions 61 arranged in the front-back direction, and the lower surface of the sliding base 50 is provided with a plurality of second protrusions 52 arranged in the front-back direction. When the locking member 60 is in the locked position, the plurality of first protrusions 61 and the plurality of second protrusions 52 engage with each other, thereby limiting the degree of freedom of the sliding base 50 in the front-back direction relative to the mounting base 10. When the locking member 60 is in the unlocked position, the plurality of first protrusions 61 and the plurality of second protrusions 52 separate. It should be noted that, in order for the locking member 60 to engage with the sliding seat 50 when it is in the locked position, a locking pin can be provided on the locking member 60 and a corresponding pin hole can be provided on the sliding seat 50.

[0035] To keep the locking member 60 in the locked position, this invention provides a handle 70 pivotally connected to the guide portion 11 below the locking member 60. By rotating the handle 70, the locking member 60 can be kept in the aforementioned locked position or disengaged from the sliding seat 50. Specifically, a boss 71 that cooperates with the locking member 60 is provided on the handle 70. The boss 71 is set off from the rotation axis of the handle 70. The handle 70 drives the boss 71 to swing between a first position and a second position. When the handle 70 is rotated and the boss 71 swings upward to the first position, the boss 71 pushes the locking member 60 upward to the highest position, so that the locking member 60 engages with the sliding seat 50 and is kept in the locked position. When the handle 70 is rotated in the opposite direction, the handle 70 drives the boss 71 to swing downward to the lowest position. The locking member 60 has the freedom to move downward relative to the mounting seat 10, so that the locking member 60 can move downward inside the mounting groove 13 and disengage from the sliding seat 50.

[0036] To ensure that the sliding seat 50 can slide smoothly in the front-back direction and to prevent the sliding seat 50 from wobbling up and down, which would make it difficult for the locking member 60 to lock it stably, a guide groove 14 extending in the front-back direction is provided on both sides of the guide part 11. A guide post 53 is provided on both sides of the sliding seat 50. The two guide posts 53 are slidably embedded in the two guide grooves 14. The guide grooves 14 and the guide posts 53 cooperate to guide the front-back movement of the sliding seat 50 and prevent the sliding seat 50 from wobbling up and down relative to the mounting base 10. The two guide posts 53 can be a pin that passes through the sliding seat 50 and is formed by protrusions on both sides of the sliding seat 50. During assembly, the sliding seat 50 can be inserted into the slide groove 12 through the front opening of the slide groove 12, and then the pin can be passed through the guide groove 14 and the pre-set hole on the sliding seat 50 from the side of the guide part 11.

[0037] A connecting plate 51 is provided at the front end of the sliding seat 50, and the connecting plate 51 is fixedly connected to the first connecting portion 21 of the elastic support member 20 by bolts. In other embodiments, the connecting plate 51 may be fixed to the first connecting portion 21 of the elastic support member 20 by other connection methods, or the sliding seat 50 may be integrally formed and disposed on the rear side of the middle part of the elastic support member 20.

[0038] The swing seat 30 includes a support plate 31 and a mounting plate 32. The mounting plate 32 is located in front of the support plate 31. The front side of the mounting plate 32 forms a mounting plane 321. The mounting plane 321 fits against the rear side of the second connecting part 22 of the elastic support member 20, so that the swing seat 30 and the second connecting part 22 have a relatively large contact area, thereby preventing deformation at the second connecting part 22 of the elastic support member 20, and ensuring that the elastic support member 20 can be stably connected to the swing seat 30. The support plate 31, the mounting plate 32 and the second connecting part 22 are fixedly connected together by bolts.

[0039] The swing seat 30 is provided with a bushing 33 extending in the vertical direction. A limiting groove 331 is formed on the periphery of the bushing 33. The two side walls of the limiting groove 331 are offset by a certain distance along the circumference of the bushing 33. A rotating shaft is provided on the mounting base 10. The rotating shaft passes through the bushing 33 to hinge the swing seat 30 to the mounting base 10. A limiting block 101 is provided on the mounting base 10 and embedded in the limiting groove 331. When the swing seat 30 swings relative to the mounting base 10, the limiting block 101 cooperates with the two side walls of the limiting groove 331 to limit the maximum angle of the swing seat 30 swinging inward and outward relative to the mounting base 10. This prevents the swing seat 30 from swinging excessively outward, causing the elastic support member 20 to deform in the opposite direction, and prevents the swing seat 30 from swinging excessively inward, causing the elastic support member 20 to deform too much. This protects the elastic support member 20.

[0040] The seat of this utility model includes the adjustable lumbar support of the aforementioned seat. The other structures of the seat are the same as those in the prior art and will not be described in detail here.

[0041] Finally, it should be noted that the above embodiments are only optional embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An adjustable lumbar support for a seat, characterized in that, Includes a mounting base, two swing seats, an elastic support, a sliding seat, and a locking component; Two swing seats are respectively hinged to both sides of the mounting base. The axis of rotation of the swing seats relative to the mounting base is consistent with the up and down direction. The elastic support is located on the front side of the mounting base. The elastic support includes a first connecting part located in the middle and two second connecting parts located on both sides. The part of the elastic support between the first connecting part and the two second connecting parts forms a deformable part. The sliding seat is movably mounted on the mounting base so that the sliding seat can move relative to the mounting base in the front-back direction. The sliding seat is fixedly connected to the first connecting part of the elastic support. The two swing seats are respectively fixed to the two second connecting parts of the elastic support. The axis of rotation of the swing seats relative to the mounting base is located inside the second connecting part. The locking element is provided on the mounting base for engaging with the slide to lock the slide to the mounting base and for disengaging from the slide to allow the slide to move relative to the mounting base in the back-and-forth direction.

2. The adjustable lumbar support of the seat as described in claim 1, characterized in that, The elastic support is plate-shaped, and a flexible support pad that can deform with the elastic support is covered on the front side of the elastic support. The flexible support pad is fixed to the elastic support by adhesive.

3. The adjustable lumbar support of the seat as described in claim 1, characterized in that, The mounting base has a rearward-extending guide section in the middle, and a sliding groove with an open front end that extends rearward. The sliding seat slides through the sliding groove through the front opening of the sliding groove, and a locking element is provided on the guide section.

4. The adjustable lumbar support of the seat as described in claim 3, characterized in that, The lower surface of the guide is provided with an upwardly recessed mounting groove that connects to the slide. The locking member is movably embedded in the mounting groove so that the locking member can move between an upper locked position and a lower unlocked position. The top surface of the locking member is provided with a plurality of first protrusions arranged in the front-back direction, and the lower surface of the slide seat is provided with a plurality of second protrusions arranged in the front-back direction. When the locking member is in the locked position, the plurality of first protrusions and the plurality of second protrusions engage with each other. When the locking member is in the unlocked position, the plurality of first protrusions and the plurality of second protrusions separate.

5. The adjustable lumbar support of the seat as described in claim 4, characterized in that, A handle located below the locking member is pivotally connected to the guide section. The handle is provided with a boss that mates with the locking member. The handle is used to drive the boss to swing between a first position and a second position. When the boss is in the first position, it pushes the locking member upward to keep the locking member in the locked position. When the boss is in the second position, it releases the locking member so that the locking member can move downward in the mounting groove.

6. The adjustable lumbar support of the seat as described in claim 3, characterized in that, A guide groove extending in the front-to-back direction is provided on both sides of the guide part, and a guide post protrudes from both sides of the sliding seat, with the two guide posts slidably embedded in the two guide grooves.

7. The adjustable lumbar support of the seat as described in claim 1, characterized in that, A connecting plate is provided at the front end of the sliding seat, and the connecting plate is fixedly connected to the first connecting part of the elastic support by bolts.

8. The adjustable lumbar support of the seat as described in claim 1, characterized in that, The swing seat includes a support plate and a mounting plate located on the front side of the support plate. The front side of the mounting plate forms a mounting plane that fits against the rear side of the second connecting part of the elastic support. The support plate, the mounting plate, and the second connecting part are fixedly connected together by bolts.

9. The adjustable lumbar support of the seat as described in claim 1, characterized in that, A bushing extending in the vertical direction is provided on the swing seat. A limiting groove is provided on the periphery of the bushing. The two side walls of the limiting groove are offset along the circumference of the bushing. A rotating shaft is provided on the mounting base. The rotating shaft passes through the bushing to hinge the swing seat to the mounting base. A limiting block is provided on the mounting base and embedded in the limiting groove.

10. A seat, characterized in that, Including the adjustable lumbar support of the seat as described in any one of claims 1-9.

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