CN218390356U

CN218390356U - Swivel chair and chair leg thereof

Info

Publication number: CN218390356U
Application number: CN202222118338.XU
Authority: CN
Inventors: 王江林; 王郑兴; 林锋
Original assignee: Anji Hengyi Furniture Co ltd
Current assignee: Anji Hengyi Furniture Co ltd
Priority date: 2022-08-11
Filing date: 2022-08-11
Publication date: 2023-01-31
Anticipated expiration: 2032-08-11

Abstract

The utility model discloses a chair leg, which comprises a chair leg main body and a plurality of outer chair legs, wherein the chair leg main body extends to the periphery and is uniformly distributed with a plurality of inner chair legs; the inner chair leg is provided with a mounting groove, the left side wall and the right side wall of the mounting groove are respectively provided with an externally concave groove, the inner end surface of the outer chair leg extends inwards to form a first extending part, the left side wall and the right side wall of the first extending part are convexly provided with a circular protruding part which is used for being in running fit with the grooves, when the first extending part is inserted into the mounting groove and rotates in place, at least part of the inner end surface of the first extending part abuts against the inner side wall of the mounting groove, at least part of the inner end surface of the outer chair leg abuts against the outer end surface of the inner chair leg, and the top wall of the mounting groove is provided with a limiting hook; the first extending part is provided with a mounting hole extending in the up-down direction, a limiting part is arranged in the mounting hole, and the limiting hook is in buckle fit with the limiting part so as to prevent the outer chair leg from rotating. Not only convenient vanning transportation, spare part is few, and the equipment is simple laborsaving moreover, does not influence chair foot bearing structure.

Description

Swivel chair and chair leg thereof

Technical Field

The utility model belongs to the field of seat furniture, concretely relates to swivel chair and chair foot thereof.

Background

The swivel chair is a furniture widely used in daily life and work, has various types and functions, and meets different use requirements. In the prior art, the chair legs of the swivel chair are usually in a radioactive integral structure, so that the swivel chair occupies large space, wastes much space and has high transportation cost when being packed and transported, and the expenditure of enterprises is increased; there are also removable structures on the market, which, although advantageous for the manufacturer or distributor, are cumbersome and not a perfect solution for the user, since their removal and assembly requires the use of tools.

As disclosed in chinese patent publication No. CN104873023B, a swivel chair leg and an assembling method thereof, the swivel chair leg includes a fixing member, an elastic member, a slider engaged with the fixing member through the elastic member, and a leg tube fitted around the fixing member, wherein the fixing member includes a hollow ring, a boss, and a fixing seat engaged with the slider. The swivel chair leg of the utility model is assembled, and each part can be separately placed to save space when being packed and transported; when the user assembles and uses the device, the assembly can be completed without other tools, which is very convenient; in the aspect of processing, each part can be processed separately, so that the size of the die is reduced, and the cost of the die is reduced; however, those skilled in the art will recognize that many parts are required and the assembly process of the chair leg is complicated, which is convenient for the manufacturer and supplier, but troublesome for the buyer and the individual.

Therefore, chinese patent document No. CN211933354U discloses a chair and chair legs thereof, wherein the chair legs comprise a chair leg main body and a plurality of outer chair legs, the chair leg main body extends to the periphery and is uniformly distributed with a plurality of inner chair legs, the inner ends of the outer chair legs are mounted at the outer ends of the inner chair legs, the outer ends of the inner chair legs are provided with a first mounting surface, a first mounting groove and a second mounting groove, the inner ends of the outer chair legs are provided with a second mounting surface and extend inwards to form a first extending portion, and the second mounting surface abuts against the first mounting surface; the first extension part comprises a first extension section and a second extension section, the first extension section is installed in the first installation groove, the left side surface and the right side surface of the first extension section are matched with the first installation groove, and the second extension section is installed in the second installation groove; through above technical scheme for outer chair foot alright very firm installation on inner chair foot to need not other spare parts, simple to operate to the user, convenient vanning transportation to the producer.

However, in the process of use, a person skilled in the art finds that the outer chair leg in the above patent document is finally matched with the limiting part on the side wall of the first mounting groove in the inner chair leg through the limiting protrusion, and due to structural limitation, the limiting part can only be located at the middle position of the side wall of the first mounting groove, so that in the process of assembling the outer chair leg, the limiting protrusions on the two sides of the outer chair leg need to prop open the side wall of the first mounting groove to the two sides and move into the limiting part after moving for a certain distance, but because the chair leg needs to ensure certain supporting structure strength, the chair leg is generally made of rigid plastic materials, and by adopting the above protrusion limiting structure, the installation is difficult, and the supporting structure of the chair leg can be damaged to influence the supporting strength of the chair leg and even deform.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a swivel chair and chair foot thereof, this chair foot package assembly not only makes things convenient for the vanning transportation, and spare part is few, assembles simple laborsaving moreover, does not influence chair foot bearing structure.

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

a chair leg comprises a chair leg main body (1) and a plurality of outer chair legs (3), wherein a central hole (10) for inserting a chair seat supporting rod is formed in the chair leg main body (1), the chair leg main body (1) extends to the periphery, and a plurality of inner chair legs (2) are uniformly distributed on the chair leg main body; the inner chair leg is provided with a mounting groove (21), the left side wall and the right side wall of the mounting groove (21) are respectively provided with an outer concave groove (23), the inner end surface of the outer chair leg (3) extends inwards to form a first extending part (31), the left side wall and the right side wall of the first extending part (31) are convexly provided with a circular protruding part (33) which is used for being matched with the grooves (23) in a rotating way, when the first extending part (31) is inserted into the mounting groove (21) and rotates in place, at least part of the inner end surface of the first extending part (31) is abutted against the inner side wall of the mounting groove (21), and at least part of the inner end surface (30) of the outer chair leg (3) is abutted against the outer end surface (20) of the inner chair leg; a limiting hook (24) is arranged on the top wall of the mounting groove (21); the first extending portion (31) is provided with a mounting hole (310) extending in the vertical direction, a limiting portion (34) is arranged in the mounting hole (310), and the limiting hook (24) is in snap fit with the limiting portion (34) so as to prevent the outer chair leg (3) from rotating.

Preferably, the top wall of the mounting groove (21) extends downwards to form a second extending part (25), the limiting hook (24) is positioned on the outer side wall of the second extending part (25), and the second extending part (25) extends into the mounting hole (310) so that the limiting hook (24) can be matched with the limiting part (34). Therefore, the second extension part can generate larger deformation to realize reliable buckling limit of the limit hook, and the strength of the support structure of the chair leg is not influenced.

Preferably, part of the inner end surface of the outer chair leg (3) forms the outer side wall of the mounting hole (310), and the limiting part (34) is positioned on the outer side wall of the mounting hole (310). Therefore, the limiting is more reliable and convenient.

Preferably, at least one first protruding block (26) is arranged on the inner side wall of the mounting groove (21), a second plane (260) is arranged on the outer end wall of the first protruding block (26), and when the first extending portion (31) is inserted into the mounting groove (21) and rotated to the right position, the inner end face of the first extending portion (31) at least partially abuts against the second plane (260).

Preferably, a second convex block (27) and a third convex block (28) are arranged on the left side wall and the right side wall of the mounting groove (21), the second convex block (27) is positioned on the outer side of the groove (23), the second convex block (27) is positioned on the inner side of the third convex block (28), a first arc-shaped curved surface (22) is arranged on the outer side wall of the groove (23), the first arc-shaped curved surface (22) forms part of the inner side wall of the second convex block (27), and a second limiting groove (29) is formed in a gap between the second convex block (27) and the third convex block (28); and fourth protruding blocks (35) are respectively arranged on the left side wall and the right side wall of the first extending part (31), and the fourth protruding blocks (35) are in plug-in fit with the second limiting grooves (29). Therefore, the relative rotation of the inner chair leg and the outer chair leg is limited through multiple structures, and the structure is more stable and reliable.

Preferably, the left side wall and the right side wall of the first extending portion (31) are respectively provided with a third limiting groove (36), the distance between the two third convex blocks (28) is smaller than the distance between the two fourth convex blocks (35), and the third convex blocks (28) are inserted into and matched with the third limiting grooves (36). Therefore, the relative rotation of the inner chair leg and the outer chair leg is limited through multiple structures, and the structure is more stable and reliable.

Preferably, a fourth arc-shaped curved surface (270) is further arranged on the outer side wall of the second protruding block (27), and a fifth arc-shaped curved surface (351) matched with the fourth arc-shaped curved surface (270) is arranged on the fourth protruding block (35). Therefore, the relative rotation of the inner chair leg and the outer chair leg is limited through multiple structures, and the structure is more stable and reliable.

A swivel chair comprises the chair leg.

The technical effects of the utility model:

1) The outer chair leg can be placed with the chair leg main body and the inner chair leg which are integrally formed, the space is saved, the transportation is convenient, the connecting position between the outer chair leg and the inner chair leg is closer to the center of the chair leg main body, the saved space is more, the supporting strength of the whole chair leg is better, and the appearance is more attractive.

2) In the assembling process, the deformation of the limiting hook is mainly used for clamping the limiting part, and the limiting structure is independent relative to the chair leg supporting structure, so that the strength of the supporting structure of the chair leg is not influenced, and the assembly is labor-saving and convenient to match.

Drawings

FIG. 1 is a schematic top view of a chair leg of the present invention;

FIG. 2 is a schematic bottom view of the chair leg of the present invention;

FIG. 3 isbase:Sub>A cross-sectional view A-A of FIG. 2;

FIG. 4 is a first schematic structural view of the outer leg of the chair leg of the present invention;

FIG. 5 is a second schematic structural view of the outer leg of the chair leg of the present invention;

fig. 6 is a schematic structural view of the chair leg main body of the present invention.

Description of reference numerals: 1. a chair leg main body; 10. a central bore; 2. an inner chair leg; 20. the outer end surface of the inner chair leg; 21. mounting grooves; 22. a first arcuate curved surface; 23. a groove; 260. a second plane; 24. a limiting hook; 25. a second extension portion; 26. a first raised block; 27. a second raised block; 28. a third bump; 29. a second limit groove; 270. a fourth arc-shaped curved surface; 3. An outer chair leg; 30. the inner end surface of the outer chair leg; 31. a first extension portion; 310. mounting holes; 32. a third plane; 33. a circular protrusion; 34. a limiting part; 342. a second arcuate curved surface; 35. a fourth bump; 36. a third limiting groove; 351. a fifth arc-shaped curved surface.

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 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 exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

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 or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed 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 to implicitly indicate 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," and "fixed" are to be construed broadly and may, 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply 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.

In the present invention, for convenience of description, "up" and "down" are upper and lower in the conventional sense, and "inner" and "outer" are based on the center of the chair leg, wherein the center of the chair leg is "inner" and the center of the chair leg is "outer".

As shown in fig. 1 and 2, a chair leg comprises a chair leg main body 1, a plurality of inner chair legs 2 and a plurality of outer chair legs 3, wherein the chair leg main body 1 is provided with a central hole 10 for inserting and installing a chair seat support rod, the plurality of inner chair legs 2 are uniformly distributed around the chair leg main body 1 and are integrally formed with the chair leg main body 1, and the plurality of outer chair legs 3 are respectively installed on the plurality of inner chair legs 2; the outer chair leg 3 is provided with an inner end surface, the inner chair leg 2 is provided with an outer end surface, and the inner end surface is partially attached to the outer end surface.

Therefore, during transportation, the outer chair leg 3 can be separately placed with the integrally formed chair leg main body 1 and the inner chair leg 2, the space is saved, the transportation is convenient, the connection position between the outer chair leg 3 and the inner chair leg 2 is closer to the center of the chair leg main body 1, the saved space is more, and the supporting strength of the whole chair leg is better and more attractive.

In the embodiment of the present application, the portion where the outer end surface 20 of the inner leg and the inner end surface of the outer leg 3 are attached to each other is a flat surface. So set up because interior terminal surface and outer terminal surface are as a pair of face of mutually supporting, if its complex benchmark is the arcwall face, then the requirement to the machining precision is very high, and in this application embodiment, interior terminal surface and outer terminal surface are as the complex benchmark through the plane, can show the requirement to the machining precision that reduces, and simultaneously, the laminating of both planes each other is more favorable to the transmission of power than the laminating of arcwall face, promptly, the support intensity of whole chair foot is better.

In the embodiment of the present application, as shown in fig. 3, fig. 4, fig. 5 and fig. 6, a mounting groove 21 is provided on the inner leg, a concave groove 23 is provided on both left and right sidewalls of the mounting groove 21, an inner end surface of the outer leg 3 extends inward to form a first extending portion 31, a circular protrusion 33 for rotationally matching with the groove 23 is protruded on both left and right sidewalls of the first extending portion 31, when the first extending portion 31 is inserted into the mounting groove 21 and rotates to a certain position, at least a portion of the inner end surface of the first extending portion 31 abuts against an inner sidewall of the mounting groove 21, and at least a portion of the inner end surface 30 of the outer leg 3 abuts against an outer end surface 20 of the inner leg; a limiting hook 24 is arranged on the top wall of the mounting groove 21; the first extending portion 31 is provided with a mounting hole 310 extending in the vertical direction, a limiting portion 34 is arranged in the mounting hole 310, and the limiting hook 24 is in snap fit with the limiting portion 34 to prevent the outer chair leg 3 from rotating.

Further preferably, the first extending portion 31 is provided with a mounting hole 310 in the vertical direction, part of the inner end surface of the outer chair leg 3 forms the outer side wall of the mounting hole 310, and the limiting portion 34 is located on the outer side wall of the mounting hole 310; the mounting hole 310 may be a through hole structure or a blind hole structure.

In the embodiment of the present application, the top wall of the mounting groove 21 extends downward to form a second extending portion 25, the position-limiting hook 24 is located on the outer side wall of the second extending portion 25, and the second extending portion 25 extends into the mounting hole 310 to enable the position-limiting hook 24 to cooperate with the position-limiting portion 34. Thus, in the process of assembling the outer chair leg 3, the limit hook 24 can be clamped into the limit part 34 mainly through the deformation of the second extending part 25; is convenient and labor-saving.

In the embodiment of the present application, an included angle between the lower end surface of the limit hook 24 and the horizontal plane is greater than 45 °; thus, the stopper hook 24 can be more smoothly caught in the stopper portion 34.

The structure has two functions, namely, the structure is used as a buckle structure for assembling the outer chair leg 3, so that the outer chair leg 3 is prevented from falling off in the taking process of the chair leg; secondly, in the use process of the chair leg, the limiting hook 24 and the limiting part 34 do not have force transmission, namely the limiting hook 24 as a vulnerable part is not stressed, thereby prolonging the service life of the chair leg.

In the embodiment of the present application, at least one first protruding block 26 is disposed on the inner side wall of the mounting groove 21, an eighth plane is disposed on the first protruding block 26, the eighth plane and the second plane 260 cooperate to form an outer end surface of the first protruding block 26, an upper edge of the eighth plane is connected to a lower edge of the second plane 260, and an included angle is formed between the eighth plane and the second plane 260; this is provided in order to allow the third plane 32 to better abut against the second plane 260 during the rotation of the outer leg 3.

In the embodiment of the present application, the side walls of the left and right sides of the mounting groove 21 are both provided with a second protruding block 27 and a third protruding block 28, the second protruding block 27 is located at the outer side of the groove 23, the second protruding block 27 is located at the inner side of the third protruding block 28, the outer side wall of the groove 23 is provided with a first arc-shaped curved surface 22, the first arc-shaped curved surface 22 forms a part of the inner side wall of the second protruding block 27, and a gap between the second protruding block 27 and the third protruding block 28 forms a second limiting groove 29; and fourth convex blocks 35 are respectively arranged on two sides of the first extending part 31, and the fourth convex blocks 35 are inserted and matched with the second limiting grooves 29.

Therefore, the structural strength of the inner chair leg 2 can be enhanced, and the inner chair leg can be used as a spare stress part, so that looseness between the outer chair leg 3 and the inner chair leg 2 caused by manufacturing precision or repeated installation and the like is avoided.

Preferably, the two sides of the first extending portion 31 are respectively provided with a third limiting groove 36, the distance between the two third protruding blocks 28 is smaller than the distance between the two fourth protruding blocks 35, and the third protruding blocks 28 are inserted into and matched with the third limiting grooves 36.

Further preferably, a fourth arc-shaped curved surface 270 is further provided on the outer side wall of the second protruding block 27, and a fifth arc-shaped curved surface 351 for matching with the fourth arc-shaped curved surface 270 is provided on the fourth protruding block 35.

A swivel chair comprises the chair leg.

The assembly process of the chair leg is as follows:

1) The chair leg main body 1 is put upside down, and the chair leg main body 1 is fixed;

2) The first extending part of the outer chair leg 3 is upwards inserted into the mounting groove 21 until the left and right circular protruding parts 33 on the first extending part 31 are completely arranged in the groove 23;

3) The outer chair leg 3 is rotated upwards and outwards until the second plane 260 abuts against the third plane 32, and the limit hook 24 is clamped into the limit part 34, so that the fixing of the outer chair leg 3 is completed;

4) And repeating the steps 2) and 3) to finish the fixation of other outer chair legs 3.

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 invention. 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, it is understood that the above embodiments are exemplary and should not be construed as limiting the invention, and that those skilled in the art may make variations, modifications, substitutions and alterations herein without departing from the spirit and scope of the 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 chair leg comprises a chair leg main body (1) and a plurality of outer chair legs (3), wherein a central hole (10) for inserting a chair seat supporting rod is formed in the chair leg main body (1), the chair leg main body (1) extends to the periphery, and a plurality of inner chair legs (2) are uniformly distributed on the chair leg main body; the inner chair leg is provided with a mounting groove (21), the left side wall and the right side wall of the mounting groove (21) are respectively provided with an outer concave groove (23), the inner end surface of the outer chair leg (3) extends inwards to form a first extending part (31), the left side wall and the right side wall of the first extending part (31) are convexly provided with a circular protruding part (33) which is used for being matched with the grooves (23) in a rotating way, when the first extending part (31) is inserted into the mounting groove (21) and rotates in place, at least part of the inner end surface of the first extending part (31) is abutted against the inner side wall of the mounting groove (21), and at least part of the inner end surface (30) of the outer chair leg (3) is abutted against the outer end surface (20) of the inner chair leg; it is characterized in that the preparation method is characterized in that,

a limiting hook (24) is arranged on the top wall of the mounting groove (21); the first extending portion (31) is provided with a mounting hole (310) extending in the vertical direction, a limiting portion (34) is arranged in the mounting hole (310), and the limiting hook (24) is in snap fit with the limiting portion (34) so as to prevent the outer chair leg (3) from rotating.

2. The chair foot according to claim 1, characterized in that the top wall of the mounting groove (21) extends downwards to form a second extension part (25), the limiting hook (24) is positioned on the outer side wall of the second extension part (25), and the second extension part (25) extends into the mounting hole (310) to enable the limiting hook (24) to be matched with the limiting part (34).

3. A chair foot according to claim 1, characterized in that part of the inner end surface of the outer chair foot (3) forms the outer side wall of the mounting hole (310), and the limiting portion (34) is located on the outer side wall of the mounting hole (310).

4. A chair foot according to claim 1, characterized in that at least one first projection (26) is provided on the inner side wall of the mounting groove (21), and a second plane (260) is provided on the outer end wall of the first projection (26), and when the first extension (31) is inserted into the mounting groove (21) and turned into position, the inner end surface of the first extension (31) at least partially abuts against the second plane (260).

5. The chair leg according to claim 1, characterized in that a second convex block (27) and a third convex block (28) are arranged on the left side wall and the right side wall of the mounting groove (21), the second convex block (27) is arranged on the outer side of the groove (23), the second convex block (27) is arranged on the inner side of the third convex block (28), a first arc-shaped curved surface (22) is arranged on the outer side wall of the groove (23), the first arc-shaped curved surface (22) forms part of the inner side wall of the second convex block (27), and a gap between the second convex block (27) and the third convex block (28) forms a second limit groove (29); and fourth protruding blocks (35) are respectively arranged on the left side wall and the right side wall of the first extending part (31), and the fourth protruding blocks (35) are in plug-in fit with the second limiting grooves (29).

6. A chair leg according to claim 5, characterized in that the left and right side walls of the first extending portion (31) are respectively provided with a third limiting groove (36), the distance between the two third protruding blocks (28) is smaller than the distance between the two fourth protruding blocks (35), and the third protruding blocks (28) are inserted and matched with the third limiting grooves (36).

7. A chair leg as claimed in claim 5, characterized in that the outer side wall of the second protruding block (27) is provided with a fourth arc-shaped curved surface (270), and the fourth protruding block (35) is provided with a fifth arc-shaped curved surface (351) for cooperating with the fourth arc-shaped curved surface (270).

8. A swivel chair comprising a chair foot according to any one of claims 1-7.