CN216534577U

CN216534577U - Chair and waist rest device thereof

Info

Publication number: CN216534577U
Application number: CN202122703302.3U
Authority: CN
Inventors: 王江林; 刘磊
Original assignee: Anji Henglin Technology Development Co ltd
Current assignee: Anji Henglin Technology Development Co ltd
Priority date: 2021-11-03
Filing date: 2021-11-03
Publication date: 2022-05-17
Anticipated expiration: 2031-11-03

Abstract

The utility model discloses a chair and a waist rest device thereof, which are arranged on a chair backrest, wherein a first flexible part is arranged on the chair backrest and comprises a waist rest part, a base, an adjusting part and at least one handle, and the base is fixedly connected with the chair backrest or integrally formed with the chair backrest; the adjusting piece is arranged on the base in a manner of sliding up and down, the handle is fixedly connected with one end of the adjusting piece, and the waist rest piece is arranged on the adjusting piece; the lumbar support piece is positioned between the first flexible piece and the base and can jack up the first flexible piece; the waist support piece can be adjusted up and down through the technical scheme; thereby being suitable for people with different physiques.

Description

Chair and waist rest device thereof

Technical Field

The utility model belongs to the field of seats, and particularly relates to a chair and a waist rest device thereof.

Background

The chair piece is an important rest tool for providing the weight of a human body when the human body is at home or at work or for reading, basically comprises a seat part which can provide the support for the hip of the human body, and the leg part can be supported to obtain temporary expression pressure, and a backrest part is arranged on the common chair piece, so that the back of the human body can be leaned. However, the chair does not provide full body support in all positions, and there is still a lumbar support when the back is supported below the buttocks. Therefore, it is more common that the backrest part is formed with a proper protrusion at the lumbar part so that the lumbar part is supported.

The traditional waist rest is fixed at the corresponding position of the office chair for the waist of the human body to rest; however, the waist rest with fixed position can not be suitable for people with different body heights and body shapes.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a chair and a lumbar support device thereof, wherein the lumbar support device can be adjusted up and down.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a waist rest device is arranged on a chair backrest, and a first flexible part is arranged on the chair backrest, and the waist rest device is characterized by comprising a waist rest part, a base, an adjusting part and at least one handle, wherein the base is fixedly connected with the chair backrest or integrally formed with the chair backrest; the adjusting piece is arranged on the base in a manner of sliding up and down, the handle is fixedly connected with one end of the adjusting piece, and the waist rest piece is arranged on the adjusting piece; the lumbar support is positioned between the first flexible member and the base and can jack up the first flexible member.

Preferably, the handle is further provided with an installation seat, the installation seat is fixedly installed on the base and located between the first flexible piece and the base, a gap is reserved between the installation seat and the base, the adjusting piece is located in the gap, and at least one end of the adjusting piece extends out of the gap and is fixedly connected with the handle.

Preferably, a groove is formed in the rear side face of the mounting seat, the mounting seat is connected to the upper surface and the lower surface of the base in a clamped mode through the groove to form primary fixing, and a gap is reserved between the bottom wall of the groove and the base.

Preferably, the lumbar support part is positioned between the mounting seat and the first flexible part, at least 2 elastic parts are fixedly connected or integrally formed on the rear surface of the lumbar support part, and the elastic parts are fixedly connected with the adjusting part;

the mounting seat is provided with a mounting hole for accommodating the at least 2 elastic pieces.

Preferably, the elastic member is an arched elastic piece, the upper end and the lower end of the elastic member are fixedly connected with the lumbar support member or integrally formed with the lumbar support member, and the middle part of the elastic member is fixedly connected with the adjusting member.

Preferably, the base is provided with at least one sliding groove in the vertical direction, a sliding block capable of sliding vertically is arranged in the sliding groove, and the sliding block is fixedly connected with the adjusting part.

Preferably, the waist support is further provided with a second flexible part, the second flexible part is located between the first flexible part and the waist support and can be jacked up by the waist support, the second flexible part is fixed on the mounting seat in a pressing, embedding or bonding mode, and the second flexible part is cloth, leather or a sponge.

A chair comprising a lumbar support as described above.

Preferably, the backrest comprises an upper back frame and a lower back frame, and the base is used for connecting the upper back frame and the lower back frame and is integrally formed with the upper back frame and the lower back frame.

Preferably, the backrest comprises an upper back frame, a base and a lower back frame from top to bottom, and the base is fixedly connected with the base.

The utility model has the beneficial effects that: the waist support piece can be adjusted up and down; thereby being suitable for people with different physiques.

Drawings

FIG. 1 is a schematic view of a back rest and lumbar support apparatus according to an embodiment of the present invention;

figure 2 is an exploded view of the back and lumbar support device in accordance with one embodiment of the present invention;

FIG. 3 is a first schematic structural view (only one half shown) of a lumbar support according to an embodiment of the present invention;

FIG. 4 is a second schematic structural view (only one half shown) of the lumbar support according to the first embodiment of the present invention;

fig. 5 is a schematic structural diagram of a backrest according to a first embodiment of the utility model.

Description of reference numerals: 10. a second flexible member; 11. a lumbar support; 12. a mounting seat; 13. an elastic member; 14. an upper back frame; 15. A base; 16. a lower back frame; 120. an upper wall; 121. a lower wall; 122. a bottom wall; 17. an adjustment member; 18. a handle; 19. A slider; 150. a chute; 20. a waist rest cover.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

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

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

A chair comprises a chair seat and a backrest shown in figures 1 and 2, wherein the backrest comprises an upper back frame 14, a base 15 and a lower back frame 16 which are integrally formed or fixedly connected from top to bottom, a first flexible piece and a lumbar support device for supporting the back of a human body are installed on the backrest, the lumbar support device comprises a second flexible piece 10, a lumbar support piece 11, an adjusting piece 17 and a mounting seat 12, the mounting seat 12 is fixedly installed on the base, the second flexible piece 10 is positioned behind the first flexible piece on the base and in front of the mounting seat 12, the second flexible piece 10 is installed on the mounting seat 12 and is matched with the mounting seat 12 to form a mounting cavity, and the lumbar support piece 11 is installed in the mounting cavity and can jack up the second flexible piece 10 and enable the second flexible piece 10 to jack up the first flexible piece on the base; the adjusting piece 17 is used for driving the lumbar support piece 11 to move up and down in the installation cavity;

wherein the lumbar support 11 and the adjusting member 17 are elastically connected.

The arrangement is such that the lumbar support 11 is not in direct contact with the user and the first flexible member on the base, avoiding friction between the lumbar support 11 and the first flexible member during up and down adjustment;

the elastic connection between the lumbar support 11 and the adjusting member 17 can automatically adjust the protruding degree of the lumbar support 11 according to the physique of the passenger on one hand, and on the other hand, the force in each direction brought to the supporting structure of the lumbar support 11 due to the sitting posture change of the passenger can be well relieved, so that the phenomenon that the supporting structure of the lumbar support 11 is easily damaged is avoided.

It is worth mentioning here that in other embodiments the second flexible element 10 may be omitted, i.e. the lumbar support 11 directly pushes up the first flexible element on the chassis.

In the embodiment of the present invention, a first frame is further provided, and the second flexible element 10 is fixed on the first frame by means of press-fitting or bonding, and the first frame is mounted on the mounting seat 12, wherein, for a specific mounting structure between the second flexible element 10 and the first frame and a specific mounting structure between the first flexible element and the base, reference may be made to a mounting structure of the mesh fabric referred to in publication nos. CN110043536A, CN110063606A, CN208540955U, CN209694607U, and CN 209769730U.

Preferably, the second flexible member 10 is made of cloth, leather, sponge or other flexible materials; preferably a mesh.

Preferably, the first flexible member is made of cloth, leather, sponge or other flexible materials; preferably a mesh.

In the embodiment of the present invention, as shown in fig. 3 and 4, at least 2 elastic members 13 are fixedly connected or integrally formed on the rear surface of the lumbar support 11, and the elastic members 13 are fixedly connected with the adjusting member 17; more preferably, the elastic element 13 is a metal elastic sheet, the upper end and the lower end of the elastic element 13 are fixedly connected with the lumbar support 11 or integrally formed, and the middle part of the elastic element 13 is fixedly connected with the adjusting element 17; so set up because the change of people's position of sitting generally can bring up the ascending effort of upper and lower direction for lumbar support 11, and thereby can bring the effort for lumbar support 11 through the change of absorption people's position of sitting that sets up the ascending metal elastic sheet of vertical direction through deformation in this application.

In the embodiment of the present invention, as shown in fig. 5, a groove is provided on the rear side surface of the mounting seat 12, and the groove includes an upper wall 120 and a lower wall 121, and a left bottom wall 122 and a right bottom wall 122 for connecting the upper wall 120 and the lower wall 121; a mounting hole of the mounting seat is formed between the two bottom walls 122 so as to facilitate the sliding fit of the adjusting member 17 with the base 15;

the upper wall 120 abuts against the lower inner side wall of the upper back frame 14, and the lower wall 121 abuts against the upper inner side wall of the lower back frame 16, so that the mounting seat 12 is clamped on the upper back frame 14 and the lower back frame 16;

the left and right bottom walls 122 are fixedly connected to the base 15 by fasteners. In such a way, when the waist rest provided by the utility model bears the torsion or vertical acting force, the main stressed part is transferred to the base, specifically to the lower inner side wall of the upper back frame 14 and the upper inner side wall of the lower back frame 16 through the groove arranged on the mounting seat 12; namely, the base is used as a supporting structure of the lumbar support; firstly, the stability of the waist support structure is ensured, secondly, the whole waist support and the related waist support structure are all positioned in the original space of the base, the feeling that the waist support is positioned on the obtrusive base in other chairs with the waist support does not exist, and the whole chair looks very harmonious and attractive.

In the embodiment of the present invention, a gap is left between each of the left and right bottom walls 122 and the base 15, the adjusting member 17 includes an adjusting plate 17 and two handles 18, the adjusting plate 17 is located in the installation cavity and can move up and down in the installation cavity, the lumbar support member 11 is elastically connected to the adjusting plate 17, the left and right ends of the adjusting plate 17 extend out of the installation cavity through the left and right gaps, respectively, and the two handles 18 are fixedly connected to the left and right ends of the adjusting plate 17, respectively.

Further preferably, at least one sliding block 19 is further provided, at least one sliding groove 150 in the vertical direction is arranged on the base 15, the sliding block 19 is located in the sliding groove 150 and can move up and down in the sliding groove 150, and the sliding block 19 is fixedly connected with the adjusting plate 17.

Further preferably, an upper limiting member and a lower limiting member are further arranged in the mounting cavity, the upper limiting member is used for limiting the upward movement of the adjusting member 17, and the lower limiting member is used for limiting the downward movement of the adjusting member 17, so that the upward and downward movement stroke of the adjusting member 17 is determined.

It is worth noting here that since the lumbar support 11 is able to lift the second flexible member 10 and the second flexible member 10 up against the mesh on the base, the lumbar support 11 can stay in any position in the up-down direction in reaction to the second flexible member 10 and the mesh.

In this embodiment, a lumbar support cover 20 is further provided, and the lumbar support cover 20 is fixedly mounted on the rear side surface of the base 15 through at least two fasteners and forms a smooth box-shaped structure in cooperation with the mounting seat 12; further preferably, the base 15 is provided with a hole matched with the fastener, when the lumbar support cover 20 is installed on the rear side surface of the base 15 through the fastener, the outer surface of the lumbar support cover 20 coincides with the outer surface of the installation seat 12, so that the lumbar support cover 20 and the installation seat 12 are matched to form a complete box-shaped structure.

Example two:

the difference between this embodiment and the first embodiment is that, in this embodiment, the backrest sequentially includes an upper back frame, a connecting seat, and a lower back frame from top to bottom, and the base is fixedly connected to the connecting seat.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that those skilled in the art may make variations, modifications, substitutions and alterations within the scope of the present invention without departing from the spirit and scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A waist rest device is arranged on a chair backrest, a first flexible part is arranged on the chair backrest, the waist rest device is characterized by comprising a waist rest part (11), a base (15), an adjusting part (17) and at least one handle (18), and the base (15) is fixedly connected with the chair backrest or integrally formed; the adjusting piece (17) is arranged on the base (15) in a manner of sliding up and down, the handle (18) is fixedly connected with the adjusting piece (17), and the waist rest piece (11) is arranged on the adjusting piece (17); the lumbar support (11) is located between the first flexible member and the base (15) and is capable of jacking up the first flexible member.

2. A lumbar support device according to claim 1, characterized in that a mounting seat (12) is provided, said mounting seat (12) being fixedly mounted on the base (15) between the first flexible member and the base (15), a gap being left between said mounting seat (12) and the base (15), said adjustment member (17) being located in said gap and at least one end of said adjustment member (17) extending outside said gap and being fixedly connected to the handle (18).

3. A lumbar support device according to claim 2, characterized in that a groove is provided on the rear side of the mounting seat (12), the mounting seat (12) is clamped on the upper and lower surfaces of the base (15) through the groove to form a primary fixation, and the gap is left between the bottom wall (122) of the groove and the base (15).

4. A lumbar support device according to claim 2, characterized in that said lumbar support member (11) is located between the mounting seat (12) and the first flexible member, at least 2 elastic members (13) being fixedly connected or integrally formed on the rear surface of said lumbar support member (11), said elastic members (13) being fixedly connected to the adjustment member (17);

and the mounting seat (12) is provided with a mounting hole for accommodating the at least 2 elastic pieces (13).

5. A lumbar support device according to claim 4, characterized in that said elastic member (13) is an arched elastic piece, the upper end and the lower end of said elastic member (13) are fixedly connected or integrated with the lumbar support member (11), and the middle part of said elastic member (13) is fixedly connected with the adjustment member (17).

6. A lumbar support device according to claim 1, characterized in that the base (15) is provided with at least one sliding slot (150) in the vertical direction, a sliding block (19) capable of sliding up and down is arranged in the sliding slot (150), and the sliding block (19) is fixedly connected with the adjusting member (17).

7. A lumbar support device according to claim 2, characterized in that a second flexible member (10) is further provided, said second flexible member (10) is located between the first flexible member and the lumbar support member (11) and can be jacked up by the lumbar support member (11), said second flexible member (10) is fixed on the mounting seat (12) by pressing, embedding or bonding, and said second flexible member (10) is made of cloth, leather or sponge.

8. A chair comprising a backrest, wherein the backrest has a lumbar support as claimed in any of claims 1-7 mounted thereon.

9. A chair as claimed in claim 8, wherein the backrest comprises an upper back frame (14) and a lower back frame (16), the base (15) being adapted to connect the upper back frame (14) and the lower back frame (16) and being formed integrally with the upper back frame (14) and the lower back frame (16).

10. A chair in accordance with claim 8, wherein the backrest comprises, from top to bottom, an upper back frame (14), a connecting seat and a lower back frame (16), the base (15) being fixedly connected with the connecting seat.