CN216135496U

CN216135496U - Chair and headrest frame thereof

Info

Publication number: CN216135496U
Application number: CN202121216495.3U
Authority: CN
Inventors: 王江林; 王郑兴; 朱青亮; 姜熙安
Original assignee: Anji Henglin Technology Development Co ltd
Current assignee: Anji Henglin Technology Development Co ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2022-03-29
Anticipated expiration: 2031-06-01

Abstract

The utility model discloses a chair and a headrest frame thereof, comprising a first connecting piece fixedly connected with a backrest frame and a headrest frame assembly which is slidably arranged on the first connecting piece through a second connecting piece, wherein the headrest frame assembly is provided with a plurality of stopping positions; the second connecting piece comprises an integrally formed mounting part and two connecting parts, the two connecting parts are respectively positioned at the left end and the right end of the mounting part, the connecting parts are used for being fixedly connected with the first connecting piece, and the mounting part is of a plate-shaped structure; the headrest frame assembly is provided with a first gap, the mounting part is positioned in the first gap, and the two connecting parts are respectively positioned at the left side and the right side of the first gap; the left rubber part and the right rubber part are positioned in the first gap; the rubber part is abutted against the front surface of the mounting part and the headrest frame component; according to the technical scheme, quiet and smooth lifting of the adjusting headrest can be realized, and the structure is simple.

Description

Chair and headrest frame thereof

Technical Field

The utility model relates to the technical field of office furniture, in particular to a chair and a headrest frame thereof.

Background

The headrest lifting mechanisms in the current market are divided into two types, one type is a mechanism locked by a bolt, and the mechanism is inconvenient to use and is basically eliminated by the market; the other mechanism is a mainstream mechanism in the market, the main structure of the mechanism is an escapement structure of a ratchet and pawl, but the structure is relatively complex, the noise is high, the grading sense is strong when the mechanism is used, and the smooth body sense is not good. Furthermore, the positioning security of the escapement is excessive for the head rest, which is mainly subjected to pressure rather than lateral forces of up-and-down displacement during use, which is too costly for the head rest.

Disclosure of Invention

In order to solve the above technical problems, an object of the present invention is to overcome the disadvantages of the prior art, and to provide a chair and a headrest frame thereof, which can achieve quiet and smooth adjustment of the elevation of a headrest, and have a simple structure.

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

a headrest frame comprises a first connecting piece fixedly connected with a backrest frame and a headrest frame assembly slidably mounted on the first connecting piece through a second connecting piece, wherein the headrest frame assembly is provided with a plurality of stop positions;

the second connecting piece comprises an integrally formed mounting part and two connecting parts, the two connecting parts are respectively positioned at the left end and the right end of the mounting part, the connecting parts are used for being fixedly connected with the first connecting piece, and the mounting part is of a plate-shaped structure;

the headrest frame assembly is provided with a first gap, the mounting part is positioned in the first gap, and the two connecting parts are respectively positioned at the left side and the right side of the first gap;

the left rubber part and the right rubber part are positioned in the first gap; the rubber member abuts against the front surface of the mounting portion and the headrest frame assembly.

Preferably, the installation part is provided with a left installation groove and a right installation groove, and the left rubber piece and the right rubber piece are respectively embedded and installed in the left installation groove and the right installation groove.

Preferably, the headrest frame assembly is further provided with a rack portion, and the rack portion is positioned in the first gap and behind the mounting portion;

an accommodating cavity is arranged on the rear surface of the mounting part; an elastic piece and a ball are installed in the accommodating cavity, the elastic piece can enable the ball to be abutted to the rack portion, and therefore the headrest frame assembly is provided with a plurality of stop positions.

Preferably, the middle part of the connecting plate is provided with a long hole, and two ends of the long hole point to the upper end and the lower end of the connecting plate respectively.

Preferably, the headrest frame assembly includes two first frames on the left and right and a connection plate; the two first frames are symmetrically distributed; the two first frames are respectively and fixedly connected with the connecting plate so that the two first frames are mutually attached; a first gap is formed between the connecting plate and the left and right first frames.

Preferably, the first frames comprise linear first racks and arc first connecting strips, two ends of each first connecting strip are integrally formed with two ends of each first rack, the first racks on the two first frames are fixedly connected with the connecting plates through fasteners respectively, and the first racks on the two first frames are attached to each other to form the rack portions.

Preferably, the first frame is further provided with a linear guide groove, and the guide groove is parallel to the first rack;

the rear surface of installation department is equipped with the protruding strip of two linear types about, two protruding strips are located the guide way on two first racks respectively about.

Preferably, the first connecting strip is provided with an arc-shaped groove along the length direction of the first connecting strip, and when the two first frames are fixedly connected through the connecting plate, the arc-shaped grooves on the two first frames can be matched to form a complete annular groove;

the headrest frame assembly further includes a frame cover fixedly mounted to the two first frames and capable of covering the annular recess.

Preferably, a non-circular protruding portion is arranged on the outer side of the connecting portion, a positioning hole matched with the protruding portion is formed in the connecting piece, and the connecting piece is initially positioned through the protruding portion and the positioning hole and then is fixed with the connecting portion through threads.

A chair comprises the headrest frame.

The utility model has the beneficial effects that: the utility model enables the headrest frame to be quietly and smoothly lifted by arranging the rubber piece, and has simple structure.

Drawings

FIG. 1 is a schematic view of the structure of the headrest frame of the present invention;

fig. 2 is an exploded view of the headrest frame of the present invention;

FIG. 3 is a schematic structural diagram of a first frame according to the present invention;

FIG. 4 is a first schematic structural diagram of a second connecting member according to the present invention;

fig. 5 is a second structural schematic diagram of the second connecting member of the present invention.

Description of reference numerals: 1. a first connecting member; 2. a second connecting member; 20. an installation part; 21. a connecting portion; 6. a first slit; 3. a rubber member; 22. mounting grooves; 23. an accommodating chamber; 4. a first frame; 5. a connecting plate; 50. a long hole; 40. a first rack; 41. a first connecting bar; 42. a guide groove; 24. a raised strip; 43. an arc-shaped groove; 7. a frame cover plate; 25. a raised portion.

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.

The first embodiment is as follows:

a headrest frame as shown in fig. 1-2, comprising a first connecting member 1 for fixedly connecting with a backrest frame, and a headrest frame assembly slidably mounted on the first connecting member 1 through a second connecting member 2, the headrest frame assembly having a plurality of resting positions;

as shown in fig. 4-5, the second connecting member 2 includes an integrally formed mounting portion 20 and two connecting portions 21, the two connecting portions 21 are respectively located at the left and right ends of the mounting portion 20, the connecting portions 21 are used for being fixedly connected with the first connecting member 1, and the mounting portion 20 is a plate-shaped structure;

the headrest frame assembly is provided with a first gap 6, the connecting parts 21 are positioned in the first gap 6, and the two connecting parts 21 are respectively positioned at the left side and the right side of the first gap 6;

the left rubber part and the right rubber part 3 are positioned in the first gap 6; the rubber member 3 abuts against the front surface of the mounting portion 20 and the headrest frame assembly.

Thus, the headrest frame can be quietly and smoothly lifted and has a simple structure by arranging the rubber member 3.

In this embodiment, the mounting portion 20 is provided with a left mounting groove 22 and a right mounting groove 22, and the left rubber member 3 and the right rubber member 3 are respectively embedded in the left mounting groove 22 and the right mounting groove 22; thus, the rubber part 3 is more convenient to install; of course, in other embodiments, the rubber member 3 may be embedded in the headrest frame assembly.

In this embodiment, the headrest frame assembly is further provided with a rack portion, and the rack portion is located in the first slit 6 and behind the mounting portion 20;

an accommodating cavity 23 is arranged on the rear surface of the mounting part 20; an elastic member and a ball are installed in the accommodating cavity 23, and the elastic member can urge the ball to abut against the rack portion, so that the headrest frame assembly has a plurality of stop positions.

Further preferably, the distance between the inner side walls of the two connecting portions 21 is equal to the width of the rack portion. So set up can avoid the second connecting piece 2 to move about in first gap 6.

In the present embodiment, the headrest frame assembly includes two first frames 4 on the left and right and a connection plate 5; the two first frames 4 are symmetrically distributed; the two first frames 4 are respectively and fixedly connected with the connecting plate 5 so that the two first frames 4 are attached to each other; a first gap 6 is formed between the connecting plate 5 and the left and right first frames 4. This is provided to facilitate the mounting of the second connector 2.

In this embodiment, the middle portion of the connecting plate 5 is provided with a long hole 50, and two ends of the long hole 50 point to the upper and lower ends of the connecting plate 5 respectively; so set up, can conveniently hold the shell of chamber 23 and reciprocate in slot 50.

Further preferably, as shown in fig. 3, the first frame 4 includes a linear first rack 40 and an arc first connecting bar 41, two ends of the first connecting bar 41 are respectively and integrally formed with two ends of the first rack 40, the first racks 40 on the two first frames 4 are respectively and fixedly connected with the connecting plate 5 through fasteners, and the first racks 40 on the two first frames 4 are attached to each other to form the rack portion.

Further preferably, a linear guide groove 42 is further provided on the first frame 4, and the guide groove 42 is parallel to the first rack 40;

the rear surface of the mounting portion 20 is provided with a left linear protruding strip 24 and a right linear protruding strip 24, and the left protruding strip 24 and the right protruding strip 24 are respectively located in the guide grooves 42 of the two first racks 40.

Further preferably, an arc-shaped groove 43 is formed in the first connecting bar 41 along the length direction of the first connecting bar 41, and when the two first frames 4 are fixedly connected through the connecting plate 5, the arc-shaped grooves 43 in the two first frames 4 can be matched to form a complete annular groove;

the headrest frame assembly further comprises a frame cover plate 7, wherein the frame cover plate 7 is fixedly arranged on the two first frames 4 and can cover the annular groove; thus, raw materials are saved, and the headrest frame assembly is more stable.

In this embodiment, the outer side of the connecting portion 21 is provided with a non-circular protrusion 25, the connecting member is provided with a positioning hole matched with the protrusion 25, and the connecting member is primarily positioned by the protrusion 25 and the positioning hole and then is screwed with the connecting portion 21.

In this embodiment, the specific installation process of the headrest frame is as follows:

the method comprises the following steps: attaching the left and right first frames 4 to each other, and attaching the first racks 40 on the two first frames 4 to each other to form the rack portions;

step two: placing the second link 2 on the rack portion such that the left and right connecting portions 21 are located on the left and right sides of the rack portion, respectively;

step three: two rubber members 3 are arranged in the mounting grooves 22 on the second connecting member 2;

step four: the connecting plate 5 is fixedly connected with the left first frame 4 and the right first frame 4, and can force the second connecting piece 2 to move a certain distance towards the direction of the rack part;

step five: fixedly mounting the frame cover plate 7 on the two first frames 4;

step six: one end of the first connecting piece 1 is fixedly connected with the second connecting piece 2, and the other end of the first connecting piece 1 is arranged on the backrest of the chair.

A chair comprises the headrest frame.

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 is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit 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 headrest frame comprises a first connecting piece (1) fixedly connected with a backrest frame, and a headrest frame component which is slidably arranged on the first connecting piece (1) through a second connecting piece (2), wherein the headrest frame component is provided with a plurality of stop positions; it is characterized in that;

the second connecting piece (2) comprises an integrally formed mounting part (20) and two connecting parts (21), the two connecting parts (21) are respectively positioned at the left end and the right end of the mounting part (20), the connecting parts (21) are used for being fixedly connected with the first connecting piece (1), and the mounting part (20) is of a plate-shaped structure;

the headrest frame assembly is provided with a first gap (6), the mounting part (20) is positioned in the first gap (6), and the two connecting parts (21) are respectively positioned at the left side and the right side of the first gap (6);

the left rubber part and the right rubber part (3) are positioned in the first gap (6); the rubber member (3) abuts against the front surface of the mounting portion (20) and the headrest frame assembly.

2. The headrest frame according to claim 1, wherein the mounting portion (20) is provided with a left mounting groove and a right mounting groove (22), and the left rubber member and the right rubber member (3) are respectively inserted into the left mounting groove and the right mounting groove (22).

3. A headrest frame according to claim 1, wherein said headrest frame assembly further includes a rack portion disposed within said first slot (6) and rearward of said mounting portion (20);

an accommodating cavity (23) is arranged on the rear surface of the mounting part (20); an elastic piece and a ball are installed in the accommodating cavity (23), the elastic piece can enable the ball to be abutted against the rack portion, and therefore the headrest frame assembly is provided with a plurality of stop positions.

4. A headrest frame according to claim 3, wherein said headrest frame assembly comprises two first frames (4) on the left and right and a connecting plate (5); the two first frames (4) are symmetrically distributed; the two first frames (4) are respectively and fixedly connected with the connecting plate (5) so that the two first frames (4) are mutually attached; a first gap (6) is formed between the connecting plate (5) and the left and right first frames (4).

5. A headrest frame according to claim 4, characterized in that said connecting plate (5) is provided at its middle portion with a long hole (50), said long hole (50) having both ends directed to the upper and lower ends of the connecting plate (5), respectively.

6. A headrest frame according to claim 4, characterized in that the first frames (4) comprise first linear racks (40) and first arc-shaped connecting bars (41), two ends of each first connecting bar (41) are respectively and integrally formed with two ends of the first rack (40), the first racks (40) on the two first frames (4) are respectively and fixedly connected with the connecting plate (5) through fasteners, and the first racks (40) on the two first frames (4) are mutually attached to form the rack parts.

7. A headrest frame, according to claim 6, characterized in that said first frame (4) is further provided with linear guide slots (42), said guide slots (42) being parallel to said first rack (40);

the rear surface of installation department (20) is equipped with two linear type protruding strip (24) about, two protruding strip (24) are located guide way (42) on two first racks (40) respectively about.

8. A headrest frame according to claim 6, characterized in that the first connecting bar (41) is provided with an arc-shaped groove (43) along the length direction of the first connecting bar (41), when the two first frames (4) are fixedly connected through the connecting plate (5), the arc-shaped grooves (43) on the two first frames (4) can be matched to form a complete annular groove;

the headrest frame assembly further comprises a frame cover plate (7), wherein the frame cover plate (7) is fixedly arranged on the two first frames (4) and can cover the annular groove.

9. The headrest frame as claimed in claim 1, wherein a non-circular boss (25) is provided on an outer side of the connecting portion (21), the connecting member is provided with a positioning hole adapted to the boss (25), and the connecting member is preliminarily positioned by the boss (25) and the positioning hole and then screwed to the connecting portion (21).

10. A chair, characterized in that it comprises a headrest frame according to any one of claims 1 to 9.