CN219047867U - Chair and adjustable waist rest thereof - Google Patents

Abstract

The utility model discloses a chair and an adjustable lumbar support thereof, which comprises a lumbar support plate, a second support, an adjusting piece and a first support, wherein the adjusting piece is used for adjusting the distance between the lumbar support plate and the second support; the first connecting plate is positioned in front of the second bracket, the first connecting plate is connected with the second bracket, and the adjusting piece can drive the first connecting plate to move in the front-back direction. Like this, the intermediate position of waist backup plate lacks the support, when the user leaned on the waist backup plate, but the waist backup plate atress takes place the adaptive laminating of deformation and is about that user's waist, improves user's use experience.

Description

Chair and adjustable waist rest thereof

Technical Field

The utility model relates to the field of home furnishing, in particular to a chair and an adjustable lumbar support thereof.

Background

The chair is an important rest tool for supporting the weight of a human body when a user is at home, at work or at reading, basically has a seat part which can provide the support of the buttocks of the human body, and can ensure that the legs are temporarily pressed due to the support, and common chair parts are provided with a backrest part, a waist rest and other parts, and can also ensure that the back of the human body is leaned.

Patent document publication No. CN216797071U discloses a lumbar support adjusting device of a seat, including a lumbar support assembly and a back support; the waist rest component comprises a waist rest body and an adjusting panel, wherein the waist rest body and the adjusting panel are relatively fixed in the vertical direction; a sliding mechanism is arranged between the two sides of the adjusting panel and the back support piece respectively; the sliding mechanism comprises a sliding rod arranged at the side end of the adjusting panel and a vertical sliding groove correspondingly arranged on the back support piece; the waist rest body can move relative to the adjusting panel to extend forwards, a depth adjusting mechanism is arranged on the back supporting piece, the depth adjusting mechanism comprises a rotary adjusting piece, and the rotary adjusting piece comprises a knob and a rotating rod; the rotating rod passes through the adjusting panel and is in threaded fit with the lumbar support body; a vertical avoiding chute is arranged at the middle position of the back support piece, a rotating rod is arranged in the avoiding chute in a penetrating way, and a knob is exposed at the rear end of the back support piece; the lumbar support body extends forward or returns back relative to the adjusting panel in response to the rotating action of the knob.

In the prior art, the lumbar support can adjust the position in the front-back direction, but the user often drives the waist to twist when leaning on, and some users like to sit on the chair sideways, so that the lumbar support in the prior art can only move back and forth, and the user cannot effectively support the waist of the user after changing sitting postures.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model aims to provide a chair and an adjustable lumbar support thereof, namely, the position of the lumbar support in the front-back direction can be adjusted, and the lumbar support can be self-adaptively attached to the waist of a user to a certain extent, so that the lumbar support can always effectively support the waist of the user, the user range is further improved, and the use experience of the user is improved.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the adjustable waist rest comprises a waist rest plate, a second bracket, an adjusting piece and a first bracket, wherein the adjusting piece is used for adjusting the distance between the waist rest plate and the second bracket, the first bracket comprises a mounting plate and a first connecting plate, the waist rest plate is fixed on the mounting plate, the mounting plate is positioned in front of the first connecting plate, two first connecting seats are protruded on the mounting plate, the two first connecting seats are arranged left and right, and the two first connecting seats are hinged with the first connecting plate; the first connecting plate is positioned in front of the second bracket, the first connecting plate is connected with the second bracket, and the adjusting piece can drive the first connecting plate to move in the front-back direction.

Preferably, the two ends of the first connecting plate are bent forward to form first limiting parts, and the two first connecting seats are located between the two first limiting parts.

Preferably, the front end of the mounting plate is provided with a mounting groove, a plurality of mounting seats are arranged in the mounting groove in a protruding mode, the rear end of the waist support plate is provided with a positioning convex strip matched with the mounting groove in a protruding mode, the positioning convex strip is inserted into the mounting groove, and the waist support plate is fixedly connected with the plurality of mounting seats through a plurality of bolts.

Preferably, the waist support plate is provided with a plurality of first positioning holes, the first positioning holes correspond to the mounting seats one by one, and the mounting seats are fixedly connected with the waist support plate after being inserted into the first positioning holes.

Preferably, the second bracket is provided with a second positioning part in a protruding mode, an opening is formed in the front end of the second positioning part, the first connecting plate is provided with a first positioning part matched with the opening in a protruding mode, and the first positioning part is inserted into the opening and can move along the opening direction of the second bracket.

Preferably, the cross section of the opening is rectangular.

Preferably, the adjusting member includes an adjusting screw axially fixed to the second bracket, and the adjusting screw is screwed to the first positioning portion of the first connecting plate.

Preferably, the adjusting piece further comprises a handle, a first through hole is formed in the second support, a second connecting portion is arranged at the rear end of the adjusting screw in a protruding mode, the second connecting portion penetrates through the first through hole, and the second connecting portion is fixedly connected with the handle.

Preferably, the handle is provided with a second positioning hole, the second positioning hole is matched with the second connecting part, the second connecting part is inserted into the second positioning hole, and the second connecting part is fixedly connected with the handle.

A chair includes an adjustable lumbar support and a back of the chair, the second support slidably coupled to the back of the chair and the second support being capable of being secured to the back of the chair.

The technical scheme of the utility model has the beneficial effects that: the adjustable waist is supported in above-mentioned scheme, both can adjust the waist and lean on the position in fore-and-aft direction, the left and right sides of waist backup pad links to each other with first support left and right sides for the intermediate position of waist backup pad does not have the support, when the user leans on the waist backup pad, but the waist backup pad atress takes place deformation, laminating with user's waist, owing to waist backup pad and first support are articulated moreover, can be further improve the self-adaptation ability that the waist leaned on, can adapt to more users, can further improve user experience.

Drawings

FIG. 1 is a schematic view of an adjustable lumbar support according to the present utility model;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is an exploded view of FIG. 1;

FIG. 4 is a schematic structural view of a first bracket;

FIG. 5 is a schematic view of the structure of an adjusting screw;

fig. 6 is a schematic structural view of the handle.

Reference numerals: 1. a lumbar support plate; 11. positioning convex strips; 2. a first bracket; 21. a mounting plate; 211. a first connection base; 212. a mounting groove; 22. a first connection plate; 221. a first limit part; 23. a first positioning portion; 24. a mounting base; 3. a second bracket; 31. a second connecting plate; 32. a second positioning portion; 33. a third connecting plate; 4. an adjusting member; 41. adjusting a screw rod; 411. a second connecting portion; 412. a threaded hole; 42. a handle; 421. and a second positioning hole.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more, unless otherwise clearly defined.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Example 1

As shown in fig. 1 to 4, an adjustable lumbar support comprises a lumbar support plate 1, a second bracket 3 and an adjusting member 4 for adjusting the distance between the lumbar support plate 1 and the second bracket 3, wherein: the waist support device comprises a waist support plate 1, a first support frame 2 and a second support frame 2, wherein the first support frame 2 comprises a mounting plate 21 and a first connecting plate 22, the waist support plate 1 is fixed on the mounting plate 21, the mounting plate 21 is positioned in front of the first connecting plate 22, two first connecting seats 211 are protruded on the mounting plate 21, the two first connecting seats 211 are arranged left and right, and the two first connecting seats 211 are hinged with the first connecting plate 22; the first connecting plate 22 is located in front of the second bracket 3, the middle of the first connecting plate 22 and the middle of the second bracket 3 are connected by an adjusting member, and the adjusting member 4 can drive the first connecting plate 22 to move in the front-rear direction.

So set up, through adjusting the position of waist backup plate 1 in front and back, make the left and right sides of waist backup plate link to each other with first support left and right sides for the intermediate position of waist backup plate does not have the support, is when the user leans on the waist backup plate, and waist backup plate atress takes place deformation, laminating with user's waist, because waist backup plate and first support are articulated moreover, can be further improve the self-adaptation ability of waist back, can adapt to more users, can further improve user's use experience.

In this embodiment, the two ends of the first connecting plate 22 in the left-right direction are bent forward to form the first limiting portions 221, and the two first connecting seats 211 are located between the two first limiting portions 221. In this way, the manner of changing the spacing of the first connecting plate 22 and the lumbar support plate 1 increases the active space of the lumbar support plate. Further, in order to facilitate the connection between the first connecting plate 22 and the mounting plate 21, two reinforcing portions are protruded on the first connecting plate 22, and the two reinforcing portions are respectively disposed on the curved first limiting portions 221 at two ends of the first connecting plate 22, and the hinge shaft is vertically disposed and penetrates through the reinforcing portions and the first connecting seat 211, so that the first connecting plate 22 is hinged to the mounting plate 21. This not only facilitates assembly of the first bracket, but also increases the strength of the first connection plate.

In order to facilitate the installation of the lumbar support plate 1, as shown in fig. 2-3, in this embodiment, the front end of the mounting plate 21 is provided with a mounting groove 212, a plurality of mounting seats 24 are protruded in the mounting groove 212, the rear end of the lumbar support plate 1 is protruded with a positioning raised line 11 matched with the mounting groove 212, the positioning raised line 11 is inserted into the mounting groove 212, and the lumbar support plate 1 is fixedly connected with the plurality of mounting seats 24 through a plurality of bolts, so that the lumbar support plate 1 is positioned on the mounting plate 21. Further, the lumbar support plate 1 is provided with a plurality of first positioning holes 12, a plurality of mounting seats 24 are respectively inserted into the plurality of first positioning holes 12, bolts are in threaded connection with the mounting seats 24, and the lumbar support plate 1 at the head of each bolt is abutted. Further, the first positioning hole 12 is a countersunk hole, the head of the bolt is located in the countersunk hole, and the head of the bolt abuts against the step surface of the countersunk hole. In this way, the mounting plate 21 and the lumbar support plate 1 are subjected to multiple positioning, so that the lumbar support plate 1 can be quickly fixed on the mounting plate 21 and the lumbar support plate 1 does not move in the left-right direction and the up-down direction.

In order to ensure the stability of the relative movement of the first bracket 2 and the second bracket 3, in this embodiment, the second bracket 3 includes a second connecting plate 31, the second connecting plate 31 is located at the rear of the first connecting plate 22, the second connecting plate 31 is protruded with a second positioning portion 32 extending forward, the front end of the second positioning portion 32 is provided with an opening, the first connecting plate 22 is protruded with a first positioning portion 23 matching with the opening, the first positioning portion 23 extends backward, and the first positioning portion 23 is inserted into the opening and can slide along the opening direction of the second bracket 3. So arranged, the movement of the first bracket 2 is more stable. Further, in order to prevent the first bracket 2 and the second bracket 3 from rotating relatively, the cross section of the opening is rectangular, and the first positioning portion 23 is rectangular; in other embodiments, the openings may also be diamond, hexagonal, etc. shaped. Further, the first positioning portion 23 is located at a middle position of the first connecting plate 22, and the second positioning portion 32 is located at a middle position of the second connecting plate 31. Therefore, the force given by the waist of the user to the waist support plate 1 is often concentrated at the middle position of the waist support plate 1, and the arrangement of the positions can enable the middle position of the waist support to be stably supported, so that the waist support is stable; and the first positioning part 23 and the second positioning part 32 are mutually inserted, so that the connecting part of the first bracket 2 and the second bracket 3 has a certain thickness, and the integral strength of the adjustable lumbar support can be increased.

In order to facilitate the movement of the first bracket 2, in this embodiment, as shown in fig. 2 to 6, the adjusting member 4 includes an adjusting screw 41, the adjusting screw 41 is connected to the second bracket 3, the adjusting screw 41 is axially fixed to the second connecting plate 31, and the adjusting screw 41 passes through the second connecting plate 31 and is screwed to the first positioning portion 23 inserted into the second positioning portion 32. Therefore, the waist rest has simpler and more compact structure. Further, in this embodiment, the adjusting member 4 further includes a handle 42, a second connection portion 411 is protruding at the rear end of the adjusting screw 41, a first through hole is formed in the second connection plate 31, a second positioning hole 421 is formed in the handle 42, a second through hole is formed in an inner wall of the second positioning hole 421, the second connection portion 411 extends backward to pass through the first through hole in the second connection plate 31, then is inserted into the second positioning hole 421 of the handle 42, a threaded hole is formed in the second connection portion 411, a bolt passes through the second through hole and then is connected with the threaded hole of the second connection portion 411 of the adjusting screw 41, and then the handle 42 is fixed on the adjusting screw, and the adjusting screw 41 is axially fixed by the handle 42. Further, the first through hole is a countersunk hole, the rear end of the adjusting screw 41 is inserted into the first through hole, and the rear end of the adjusting screw 41 can abut against a step surface in the first through hole, so that the position of the adjusting screw 41 can be further limited. Further, the second connecting portion 411 is hexagonal, and the second positioning hole 421 is matched with the second connecting portion 411. In other embodiments, the second connection portion 411 may have other shapes such as a quadrilateral.

In this embodiment, the second bracket 3 further includes two third connection plates 33, and the third connection plates 33 are respectively fixed at the left and right ends of the second connection plate 31; the second connecting plate 31 is arc-shaped, the left and right ends of the second connecting plate 31 are in a forward extending trend, and the third connecting plate 33 is provided with a hook-shaped third connecting part.

Example 2

The chair comprises the waist rest and a chair back, wherein the chair back comprises a chair back frame, and the two third connecting parts of the adjustable waist rest can be hooked on the chair back frame, so that the adjustable waist rest is fixed after sliding on the chair back, and the upper and lower positions of the waist rest on the chair back are adjusted. In other embodiments, the adjustable lumbar support may also directly secure the second bracket 3 to the back frame.

In this embodiment, the chair back further includes a tightening net, the tightening net is wrapped on the chair back frame, the adjustable lumbar support is located at the rear of the tightening net, and when the position of the lumbar support plate 1 in the front-rear direction is adjusted, the lumbar support plate 1 can jack up the tightening net, so that the tightening degree of the tightening net can be adjusted, and meanwhile, the supporting posture of the tightening net is changed, so that the chair back is more attached to the back of a user.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the utility model.

Claims (10)

1. The utility model provides an adjustable waist is leaned on, includes waist backup pad (1), second support (3) and is used for adjusting waist backup pad (1) and second support (3) interval's regulating part (4), its characterized in that: the waist support is characterized by further comprising a first support (2), wherein the first support (2) comprises a mounting plate (21) and a first connecting plate (22), the waist support plate (1) is fixed on the mounting plate (21), the mounting plate (21) is positioned in front of the first connecting plate (22), two first connecting seats (211) are protruded on the mounting plate (21), the two first connecting seats (211) are arranged left and right, and the two first connecting seats (211) are hinged with the first connecting plate (22); the first connecting plate (22) is positioned in front of the second bracket (3), the middle part of the first connecting plate (22) is connected with the middle part of the second bracket (3) through the adjusting piece (4), and the adjusting piece (4) can drive the first connecting plate (22) to move in the front-back direction.

2. An adjustable lumbar support according to claim 1, wherein: the two ends of the first connecting plate (22) are bent forwards to form first limiting parts (221), and the two first connecting seats (211) are located between the two first limiting parts (221).

3. An adjustable lumbar support according to claim 1, wherein: the front end of mounting panel (21) is equipped with mounting groove (212), protruding a plurality of mount pads (24) that have in mounting groove (212), waist backup plate (1) rear end protruding have with mounting groove (212) assorted location sand grip (11), location sand grip (11) insert mounting groove (212), waist backup plate (1) are through a plurality of bolts and a plurality of mount pads (24) fixed connection.

4. An adjustable lumbar support according to claim 3, wherein: a plurality of first positioning holes (12) are formed in the waist support plate (1), the first positioning holes (12) correspond to the mounting seats (24) one by one, and the mounting seats (24) are fixedly connected with the waist support plate (1) after being inserted into the first positioning holes (12).

5. An adjustable lumbar support according to claim 1, wherein: the second bracket (3) is provided with a second positioning part (32) in a protruding mode, an opening is formed in the front end of the second positioning part (32), the first connecting plate (22) is provided with a first positioning part (23) matched with the opening in a protruding mode, and the first positioning part (23) is inserted into the opening and can move along the opening direction of the second bracket (3).

6. An adjustable lumbar support according to claim 5, wherein: the cross section of the opening is rectangular.

7. An adjustable lumbar support according to claim 5, wherein: the adjusting piece (4) comprises an adjusting screw rod (41), the adjusting screw rod (41) is axially fixed with the second bracket (3), and the adjusting screw rod (41) is in threaded connection with the first positioning part (23) of the first connecting plate (22).

8. An adjustable lumbar support according to claim 7, wherein: the adjusting piece (4) further comprises a handle (42), a first through hole is formed in the second support (3), a second connecting portion (411) is arranged at the rear end of the adjusting screw rod (41) in a protruding mode, the second connecting portion (411) penetrates through the first through hole, and the second connecting portion (411) is fixedly connected with the handle (42).

9. An adjustable lumbar support according to claim 8, wherein: the handle (42) is provided with a second positioning hole (421), the second positioning hole (421) is matched with the second connecting part (411), the second connecting part (411) is inserted into the second positioning hole (421), and the second connecting part (411) is fixedly connected with the handle (42).

10. A chair, characterized in that: an adjustable lumbar support comprising any of the above claims 1-9, further comprising a back, said second bracket slidably coupled to said back and capable of being secured thereto.

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