Front and rear adaptive lumbar adjustment components and seats

Abstract

The utility model discloses a front-to-back direction adaptive lumbar support adjustment component and a seat, comprising an adjustment seat, an adjustment slot is arranged in the adjustment seat; a sliding mechanism comprises a sliding seat and a damping member, the sliding seat is placed in the adjustment slot and can slide in the front-to-back direction, the front end of the sliding seat extends forward from the adjustment slot and is used to connect the lumbar support, the damping member is arranged between the adjustment seat and the sliding seat and is used to provide elastic stress for pushing the sliding seat forward, and a first locking portion is arranged on the sliding seat; a locking mechanism comprises a locking member and a locking handle, the locking member is provided with a second locking portion which extends into the adjustment slot and cooperates with the first locking portion, and the locking handle is swingably mounted on the adjustment seat. The user only needs to sit on the seat to adjust the back pressure on the lumbar support, the sliding seat can slide forward and backward adaptively under the force in the unlocked state, and the locking and unlocking of the sliding seat is realized by swinging the locking handle, the adjustment of the front-to-back position of the lumbar support and the switching of the locking state are very convenient, and the operation is extremely simple.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a front-to-back direction adaptive lumbar adjustment component and a seat. Background Art

[0002] At present, office chairs and gaming chairs are usually equipped with structures such as lumbar supports to support the user's waist. The lumbar supports of existing chairs are divided into fixed-position and adjustable types. The fixed-position type means that a lumbar support is fixed at the position corresponding to the human waist on the chair and cannot be adjusted or moved. The adjustable type means that the lumbar support is provided with different front and rear adjustment positions based on the former, and has a certain front and rear adjustment function.

[0003] Users of different body shapes have different requirements for the position of lumbar support. Existing fixed-position lumbar supports cannot adapt to most users. Adjustable lumbar supports usually require multiple manual adjustments to achieve a more ideal effect, and the adjustment process is relatively complicated and troublesome. Utility Model Content

[0004] The utility model aims to provide a front-to-back direction adaptive component and a seat, so that the user can apply force to the lumbar support according to his / her own needs, and the lumbar support can be adaptively adjusted in the front-to-back direction.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A front-to-back direction adaptive lumbar support adjustment component, comprising:

[0007] An adjustment seat, wherein an adjustment slot is provided in the adjustment seat;

[0008] The sliding mechanism comprises a sliding seat and a damping member, wherein the sliding seat is placed in the adjusting slot and can slide in the front-to-back direction, and the front end of the sliding seat extends forward from the adjusting slot and is used to connect with the lumbar support; the damping member is arranged between the adjusting seat and the sliding seat and is used to provide elastic stress to push the sliding seat forward; the sliding seat is provided with a plurality of first locking portions spaced apart in the front-to-back direction;

[0009] The locking mechanism comprises a locking piece and a locking handle, wherein the locking piece is provided with a second locking portion, the locking piece is mounted on the adjusting seat, the second locking portion extends into the adjusting groove and cooperates with the first locking portion to limit or release the freedom of sliding forward and backward of the sliding seat; the locking handle comprises a hand-held end and a locking end, and the locking handle is swingably mounted on the adjusting seat; the hand-held end is used to drive the locking end to swing between a first position and a second position, when the locking end is in the first position, the locking end presses the locking piece so that the second locking portion cooperates with the first locking portion to lock so as to limit the sliding freedom of the sliding seat, and when the locking end is in the second position, the second locking portion unlocks the first locking portion to release the sliding freedom of the sliding seat.

[0010] Furthermore, the damping member is a first elastic component, a first connecting column is provided in the adjusting groove, a second connecting column is provided on the sliding seat, one end of the first elastic component is connected to the first connecting column, and the other end of the first elastic component is connected to the second connecting column.

[0011] Furthermore, the locking mechanism also includes a second elastic component, an installation opening is provided on the adjustment seat, and the locking piece includes a locking block and two pressure-bearing plates, and the two pressure-bearing plates are arranged on both sides of the locking block; the second locking part is arranged at the bottom end of the locking block; the locking block extends into the adjustment groove from the installation opening; the pressure-bearing plate and the adjustment seat are arranged at intervals; the second elastic component is connected between the two pressure-bearing plates and the adjustment seat, which is used to provide elastic stress to the locking piece, so that the locking piece has a movement tendency of unlocking the second locking part and the first locking part.

[0012] Furthermore, a plurality of tooth grooves are provided at the top of the sliding seat; a tooth block is provided at the bottom end of the locking block, and the tooth block is used to engage with the tooth grooves accordingly; the tooth grooves form the first locking parts, and the tooth block forms the second locking parts.

[0013] Furthermore, the locking mechanism also includes a mounting seat, which is provided with a through-hole and a positioning groove, the mounting seat is installed in the mounting mouth, the locking block passes through the through-hole into the mounting mouth and extends into the adjustment groove; the pressure plate is arranged corresponding to the positioning groove, and the second elastic component is arranged between the positioning groove and the pressure plate.

[0014] Furthermore, a protruding column is provided at the bottom end of the pressure-bearing sheet, and the second elastic component is provided between the protruding column and the positioning groove.

[0015] Furthermore, the mounting seat is provided with a limiting portion, the end face of the limiting portion is an arc-shaped surface, and correspondingly, the end face of the locking end is an arc-shaped surface, and the end face of the locking end is interference fit with the end face of the limiting portion.

[0016] Furthermore, a limiting groove is provided at the bottom end of the sliding seat, and a limiting step is provided in the adjusting groove. The limiting step can be slidably connected to the limiting groove to limit the forward and backward sliding range of the sliding seat.

[0017] Furthermore, the sliding mechanism also includes a sliding sleeve, the sliding seat is slidably connected in the sliding sleeve, a first clamping portion is provided on the sliding sleeve, a second clamping portion is provided in the adjusting groove, and the second clamping portion is clamped with the first clamping portion.

[0018] The utility model also provides a seat, comprising the front-rear direction adaptive lumbar support adjustment component.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] In the utility model, the user only needs to sit on the seat to adjust the rear pressure on the lumbar support. The sliding seat connected to the lumbar support can slide forward and backward adaptively under the force in the unlocked state, and the sliding seat can be locked and unlocked by operating the locking handle to swing it. The adjustment of the front and rear position of the lumbar support and the switching of the locking state are very convenient and the operation is extremely simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the exploded structure of the utility model;

[0023] Figure 3 It is a cross-sectional view of the utility model;

[0024] Figure 4 It is a cross-sectional view from another perspective of the utility model;

[0025] Figure 5 It is a structural schematic diagram of the adjustment seat of the utility model;

[0026] Figure 6 It is a structural schematic diagram of the sliding seat of the utility model;

[0027] Figure 7 It is a structural schematic diagram of the locking member of the utility model;

[0028] Figure 8 It is a structural schematic diagram of the mounting seat of the utility model;

[0029] Fig. 9 It is a structural schematic diagram of the sliding sleeve of the utility model.

[0030] In the figure: 10, adjustment seat; 11, adjustment slot; 12, bayonet; 20, sliding seat; 21, tooth groove; 22, first elastic component; 23, sliding sleeve; 231, buckle; 232, limiting step; 24, limiting slot; 31, locking handle; 311, hand-held end; 312, locking end; 32, locking piece; 321, tooth block; 322, locking block; 323, pressure plate; 33, mounting seat; 331, insertion interface; 332, positioning slot; 333, limiting part; 34, second elastic component. DETAILED DESCRIPTION

[0031] 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.

[0032] 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.

[0033] 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.

[0034] like Figure 1-9As shown, a front-to-back direction adaptive lumbar support adjustment assembly of the utility model comprises an adjustment seat 10, a sliding mechanism and a locking mechanism, and an adjustment slot 11 is provided in the adjustment seat 10. The sliding mechanism comprises a sliding seat 20 and a damping member, and the sliding seat 20 is placed in the adjustment slot 11, and the sliding seat 20 can slide forward and backward in the adjustment slot 11. The front end of the sliding seat 20 extends out of the adjustment slot 11, and the damping member is arranged between the sliding seat 20 and the adjustment seat 10, and is used to provide elastic stress for pushing the sliding seat 20 forward.

[0035] The sliding seat 20 is provided with a plurality of first locking parts, which are spaced apart in the front-to-back direction, that is, the plurality of first locking parts are spaced apart in the sliding direction of the sliding seat 20. The locking mechanism includes a locking member 32 and a locking handle 31. The locking member 32 is installed on the adjustment seat 10. The locking member 32 is provided with a second locking part, which extends into the adjustment slot 11 and is used to cooperate with the first locking part when the sliding seat 20 slides to limit or release the freedom of the sliding seat 20 to slide forward and backward. The locking handle 31 includes a handheld end 311 and a locking end 312. The locking handle 31 is swingably installed on the adjustment seat 10. When the user operates the handheld end 311 to swing up and down, the locking end 312 is driven to be in the first position (see Figure 3 position B) and the second position (see Figure 3 When the locking end 312 is in the first position, the second locking portion and the first locking portion are locked together to limit the sliding freedom of the sliding seat 20. When the locking end 312 is in the second position, the second locking portion and the first locking portion are unlocked to release the sliding freedom of the sliding seat 20.

[0036] Based on this structure, in actual application, the adjustment seat 10 is connected to the seat back, and the sliding seat 20 is connected to the waist support. When the waist support needs to be locked, the user operates the handheld end 311 of the locking handle 31 to swing, so that the locking end 312 at the other end swings to the first position (the position of the locking end 312 at this time is shown in FIG. Figure 3 Position B), so that the second locking portion of the locking member 32 is locked with the first locking portion, the sliding freedom of the sliding seat 20 is limited and cannot slide in the adjustment groove 11, and the lumbar support connected to the sliding seat 20 remains locked and cannot move.

[0037] When the waist support position needs to be adjusted, the user can swing the hand-held end 311 of the locking handle 31 so that the locking end 312 at the other end swings from the first position to the second position (the position of the locking end 312 at this time is shown in FIG. Figure 3 The second locking portion is unlocked from the first locking portion, releasing the freedom of the sliding seat 20, and the sliding seat 20 can drive the lumbar support to slide forward and backward under the action of an external force or a damping member.

[0038] Specifically, the user applies a backward sliding pressure to the lumbar support, and the pressure is transmitted to the sliding seat 20, overcoming the resistance of the damping member to drive the sliding seat 20 to slide backward in the adjustment slot 11. During this process, if the sliding seat 20 needs to slide forward, the user only needs to reduce the pressure applied backward so that the elastic stress of the damping member on the sliding seat 20 is greater than the pressure, and the sliding seat 20 can slide forward, and this is done until the lumbar support is adjusted to the user's best fitting position, and then the handheld end 311 of the locking handle 31 is swung to drive the locking end 312 to swing to the first position, and the second locking part is locked with the first locking part to limit the degree of freedom of the sliding seat 20, thereby completing the front and rear adjustment of the lumbar support. During the entire adjustment process, the user only needs to sit on the seat to adjust the backward pressure on the lumbar support, and the sliding seat 20 can adaptively drive the lumbar support to adjust its front and rear position according to the force, and the operation is extremely simple.

[0039] Furthermore, the damping member in this embodiment is a first elastic member 22, a first connecting column is provided in the adjusting groove 11, and a second connecting column is provided on the sliding seat 20 accordingly, one end of the first elastic member 22 is connected to the first connecting column, and the other end of the first elastic member 22 is connected to the second connecting column. In this way, when the sliding seat 20 slides backward, the first elastic member 22 is compressed, and an elastic stress that pushes the sliding seat 20 forward is applied. The first elastic member 22 can be an elastic rubber block or a spring, etc.

[0040] Furthermore, the locking mechanism further includes a second elastic component 34, a mounting opening is provided on the adjustment seat 10, and the locking member 32 includes a locking block 322 and two pressure-bearing sheets 323, and the two pressure-bearing sheets 323 are provided on both sides of the locking block 322. The second locking portion is provided at the bottom end of the locking block 322, and the locking block 322 extends into the adjustment slot 11 through the mounting opening. The pressure-bearing sheets 323 are spaced apart from the adjustment seat 10, and the second elastic component 34 is connected between the two pressure-bearing sheets 323 and the adjustment seat 10.

[0041] On the basis of this structure, the locking block 322 of the locking member 32 can be extended into the adjustment groove 11 through the installation opening, so that the second locking portion on the locking block 322 can be locked and matched with the first locking portion on the sliding seat 20. Since the pressure plate 323 is connected to the adjustment seat 10 with a second elastic component 34, under the elastic stress provided by the second elastic component 34, the locking member 32 has a moving tendency to unlock the second locking portion from the first locking portion. When the locking end 312 swings from the first position to the second position, the locking member 32 is no longer pressed by the locking end 312, and can move under the elastic stress of the second elastic component 34 so that the second locking portion is separated from the first locking portion to achieve unlocking, thereby releasing the sliding freedom of the sliding seat 20.

[0042] Furthermore, in the present embodiment, a plurality of tooth grooves 21 are provided at the top end of the sliding seat 20, and a tooth block 321 is provided at the bottom end of the locking block 322, and the tooth block 321 can be meshed with the tooth grooves 21 accordingly. On the basis of this structure, the tooth grooves 21 are formed as a first locking portion, and the tooth block 321 is formed as a second locking portion. When the tooth block 321 is meshed with the tooth grooves 21, due to the mutual interference between the two, the freedom of the sliding seat 20 to slide back and forth in the adjustment groove 11 is limited. When the tooth block 321 is separated from the tooth grooves 21, the two no longer interfere with each other, thereby releasing the freedom of the sliding seat 20 to slide back and forth in the adjustment groove 11.

[0043] Furthermore, the locking mechanism in this embodiment also includes a mounting seat 33, and a through-hole 331 and a positioning groove 332 are correspondingly provided on the mounting seat 33. The above-mentioned mounting seat 33 is installed on the mounting port of the adjustment seat 10, and the locking block 322 passes through the mounting port through the through-hole 331 and extends into the adjustment groove 11. The pressure plates 323 on both sides of the locking block 322 are correspondingly arranged with the positioning groove 332. In this way, the second elastic component 34 can be arranged between the positioning groove 332 and the pressure plate 323 to facilitate the positioning and installation of the second elastic component 34.

[0044] Furthermore, a protruding column is provided at the bottom end of the pressure plate 323, one end of the second elastic component 34 is located in the positioning groove 332, and the other end is sleeved on the protruding column, thereby ensuring the stability of the elastic deformation of the second elastic component 34 between its two ends.

[0045] The locking member 32 is pressed against the locking portion 333 to thereby secure the locking member 32 in place. The locking member 32 can be moved upward, and the tooth block 321 of the locking member 32 keeps meshing with the tooth groove 21 of the sliding seat 20. The sliding freedom of the sliding seat 20 is limited. When the user needs to adjust the front and rear position of the lumbar support, the hand-held end 311 is pressed down, and the locking end 312 will swing upward and squeeze out from the end surface of the limiting portion 333, no longer pressing the locking member 32. The locking member 32 moves upward under the elastic stress of the second elastic component 34. When the locking end 312 swings to the second position, the tooth block 321 separates from the tooth groove 21 to release the locking state, thereby releasing the sliding freedom of the sliding seat 20.

[0046] Furthermore, in order to limit the sliding range of the sliding seat 20, a limit groove 24 is provided at the bottom end of the sliding seat 20, and a corresponding limit step 232 is provided in the adjustment groove 11. The limit step 232 can be slidably connected to the limit groove 24 to limit the front and rear sliding range of the sliding seat 20. During the sliding process, the sliding seat 20 is limited by the limit step 232 abutting against the end wall of the limit groove 24 to achieve positioning.

[0047] In other embodiments, a limiting step may be provided at the bottom end of the sliding seat 20 , and a limiting groove may be provided at the bottom end of the adjusting groove 11 correspondingly, so that the sliding limiting of the sliding seat 20 can also be achieved.

[0048] Furthermore, the sliding mechanism in this embodiment also includes a sliding sleeve 23, which is installed in the adjustment groove 11, and the sliding seat 20 is slidably connected to the sliding sleeve 23, so that the sliding seat 20 can achieve the front and rear adjustment of the lumbar support position by sliding between the sliding sleeve 23, and the sliding sleeve 23 plays a role in reducing the sliding resistance.

[0049] Specifically, a first clamping portion is provided on the sliding sleeve 23, and a second clamping portion is provided in the adjusting groove 11, and the second clamping portion is clamped with the first clamping portion to achieve the positioning and installation of the sliding sleeve 23. The first clamping portion can be a buckle 231, and the second clamping portion can be a bayonet 12, so that the sliding sleeve 23 and the adjusting groove 11 can be clamped.

[0050] In other embodiments, a slot may be provided on the sliding sleeve 23 , and a buckle or spring buckle structure may be provided on the adjustment seat 10 to achieve the buckling.

[0051] In addition, based on this structure, the above-mentioned limiting step 232 is arranged at the bottom end of the sliding sleeve 23 , and the limiting step 232 cooperates with the limiting groove 24 of the sliding seat 20 to limit the sliding range of the sliding seat 20 .

[0052] It should also be noted that, based on the structure provided with the sliding sleeve 23, the installation opening passes through the top end of the sliding sleeve 23, and the second locking portion of the locking member 32 can extend into the sliding sleeve 23 through the installation opening to lock and cooperate with the first locking portion of the sliding seat 20.

[0053] This embodiment also provides a seat, including the above-mentioned front-to-rear direction adaptive lumbar adjustment assembly, and other structures of the seat are the same as those in the prior art and will not be described in detail here.

[0054] 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. A front-to-back direction adaptive lumbar support adjustment component, characterized in that: include, An adjustment seat, wherein an adjustment slot is provided in the adjustment seat; The sliding mechanism comprises a sliding seat and a damping member, wherein the sliding seat is placed in the adjusting slot and can slide in the front-to-back direction, and the front end of the sliding seat extends forward from the adjusting slot and is used to connect with the lumbar support; the damping member is arranged between the adjusting seat and the sliding seat and is used to provide elastic stress to push the sliding seat forward; the sliding seat is provided with a plurality of first locking portions spaced apart in the front-to-back direction; The locking mechanism comprises a locking piece and a locking handle, wherein the locking piece is provided with a second locking portion, the locking piece is mounted on the adjusting seat, the second locking portion extends into the adjusting groove and cooperates with the first locking portion to limit or release the freedom of sliding forward and backward of the sliding seat; the locking handle comprises a hand-held end and a locking end, and the locking handle is swingably mounted on the adjusting seat; the hand-held end is used to drive the locking end to swing between a first position and a second position, when the locking end is in the first position, the locking end presses the locking piece so that the second locking portion cooperates with the first locking portion to lock so as to limit the sliding freedom of the sliding seat, and when the locking end is in the second position, the second locking portion unlocks the first locking portion to release the sliding freedom of the sliding seat.

2. The front-to-back direction adaptive lumbar support adjustment assembly according to claim 1, characterized in that: The damping member is a first elastic component, a first connecting column is arranged in the adjusting groove, a second connecting column is arranged on the sliding seat, one end of the first elastic component is connected to the first connecting column, and the other end of the first elastic component is connected to the second connecting column.

3. The front-to-back direction adaptive lumbar support adjustment assembly according to claim 1, characterized in that: The locking mechanism also includes a second elastic component, an installation opening is provided on the adjustment seat, and the locking piece includes a locking block and two pressure-bearing plates, and the two pressure-bearing plates are arranged on both sides of the locking block; the second locking part is arranged at the bottom end of the locking block; the locking block extends into the adjustment groove from the installation opening; the pressure-bearing plate and the adjustment seat are arranged at intervals; the second elastic component is connected between the two pressure-bearing plates and the adjustment seat, which is used to provide elastic stress to the locking piece, so that the locking piece has a movement tendency of unlocking the second locking part and the first locking part.

4. The front-to-back direction adaptive lumbar support adjustment assembly according to claim 3, characterized in that: The top end of the sliding seat is provided with a plurality of tooth grooves; the bottom end of the locking block is provided with a tooth block, and the tooth block is used to engage with the tooth grooves correspondingly; the tooth grooves form the first locking parts, and the tooth block forms the second locking parts.

5. The front-to-back direction adaptive lumbar support adjustment assembly according to claim 3, characterized in that: The locking mechanism also includes a mounting seat, which is provided with a penetration interface and a positioning groove. The mounting seat is installed in the mounting opening, and the locking block penetrates into the mounting opening through the penetration interface and extends into the adjustment groove; the pressure plate is correspondingly arranged to the positioning groove, and the second elastic component is arranged between the positioning groove and the pressure plate.

6. The front-to-back direction adaptive lumbar support adjustment assembly according to claim 5, characterized in that: A protruding column is disposed at the bottom end of the pressure-bearing sheet, and the second elastic component is disposed between the protruding column and the positioning groove.

7. The front-to-back direction adaptive lumbar support adjustment assembly according to claim 5, characterized in that: The mounting seat is provided with a limiting portion, the end surface of the limiting portion is an arc-shaped surface, and correspondingly, the end surface of the locking end is an arc-shaped surface, and the end surface of the locking end is interference-fitted with the end surface of the limiting portion.

8. The front-to-back direction adaptive lumbar support adjustment assembly according to any one of claims 1 to 7, characterized in that: A limiting groove is arranged at the bottom end of the sliding seat, and a limiting step is arranged in the adjusting groove. The limiting step can be slidably connected to the limiting groove to limit the forward and backward sliding range of the sliding seat.

9. The front-to-back direction adaptive lumbar support adjustment assembly according to any one of claims 1 to 7, characterized in that: The sliding mechanism also includes a sliding sleeve, the sliding seat is slidably connected in the sliding sleeve, a first clamping portion is provided on the sliding sleeve, a second clamping portion is provided in the adjusting groove, and the second clamping portion is clamped with the first clamping portion.

10. A seat, characterized in that: It comprises a front-to-rear direction adaptive lumbar support adjustment component according to any one of claims 1-9.

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