CN218390363U - Chair and chair legs thereof - Google Patents

Abstract

The utility model discloses a chair and chair legs thereof, 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 side walls of two sides of the mounting groove are respectively provided with a first arc-shaped bending surface and a first plane which are concave outwards, the first plane is connected with the lower edge of the first arc-shaped bending surface, and the inner side wall of the mounting groove is provided with a second plane; the inner end surface of the outer chair leg extends inwards to form a first extending part, and the first extending part is provided with a third plane used for abutting against the second plane and a first arc-shaped bending part used for being matched with the first arc-shaped bending surface, so that at least part of the inner end surface of the outer chair leg abuts against the outer end surface of the inner chair leg; the bottom wall of the mounting groove is provided with a first limiting groove, the upper surface of the first extending part is provided with a limiting bulge, and the limiting bulge is matched with the first limiting groove so as to prevent the outer chair leg from rotating; convenient vanning transportation among this technical scheme, spare part is few.

Description

Chair and chair legs thereof

Technical Field

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

Background

The chair is a furniture widely used in daily life and work, has various types and functions, and meets different use requirements.

The chair legs of the existing chair are usually of a radioactive integral structure, so that the occupied space is large, the wasted space is large, the transportation cost is high and the expenditure of enterprises is increased when the chair is packed and transported; 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 publication 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 using the outer chair leg in the above patent document, it is found that the limiting protrusion is finally matched with the first limiting groove on the side wall of the first mounting groove in the inner chair leg, and due to the structural limitation, the first limiting groove 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 both sides of the outer chair leg need to prop open the side wall of the first mounting groove to both sides and move into the first limiting groove after moving for a certain distance, but since the chair leg needs to ensure a certain supporting structural strength, the chair leg generally adopts a rigid plastic material, which makes it difficult to prop open the side wall of the first mounting groove to both sides, and after the side wall of the first mounting groove is propped open again, the limiting protrusions on both sides of the outer chair leg need to continue to move downward to prop open the side wall of the first mounting groove, which can be completed with a greater force, and at the same time, the deformation amount may cause structural damage to the inner chair leg.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a chair and chair foot thereof, this chair foot is package assembly, convenient vanning transportation, and spare part is few, and at the assembly process, the deformation volume of interior chair foot is few, thereby laborsaving convenient equipment.

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

a chair leg comprises a chair leg main body and a plurality of outer chair legs, wherein the chair leg main body is provided with a central hole for inserting and installing a chair seat supporting rod, and 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 side walls of two sides of the mounting groove are respectively provided with a first arc-shaped bending surface and a first plane which are concave outwards, the first plane is connected with the lower edge of the first arc-shaped bending surface, and the inner side wall of the mounting groove is provided with a second plane; the inner end face of the outer chair leg extends inwards to form a first extending part, and a third plane used for abutting against the second plane and a first arc-shaped bending part used for being matched with the first arc-shaped bending surface are arranged on the first extending part, so that at least part of the inner end face of the outer chair leg abuts against the outer end face of the inner chair leg;

the bottom wall of the mounting groove is provided with a first limiting groove, the upper surface of the first extending portion is provided with a limiting protrusion, and the limiting protrusion is matched with the first limiting groove to prevent the outer chair leg from rotating.

Preferably, the upper end face of the limiting protrusion comprises a fourth plane and a fifth plane which form an included angle, and a second arc-shaped bending face used for connecting the fourth plane and the fifth plane, the fourth plane is located on the outer side of the fifth plane and faces the inner end face of the outer chair leg, and the fourth plane abuts against the first limiting groove.

Preferably, the angle between the fourth plane and the horizontal plane is greater than 75 °.

Preferably, the angle between the fifth plane and the horizontal plane is less than 45 °.

Preferably, the outer end surface of the limiting protrusion is at least partially connected with the inner end surface of the outer chair leg.

Preferably, the bottom wall of the first limiting groove comprises two planes forming an included angle and a third arc-shaped curved surface for connecting the two planes, and one of the two planes is abutted against the fourth plane.

Preferably, at least one first protruding block is arranged on the inner side wall of the mounting groove, and a second plane is arranged on the first protruding block.

Preferably, the side walls of the two sides of the mounting groove are respectively provided with a second protruding block and a third protruding block, the second protruding block is positioned at the inner side of the third protruding block, the first arc-shaped bending surface and the first plane form part of the inner side wall of the second protruding block, and a gap between the second protruding block and the third protruding block forms a second limiting groove;

and fourth protruding blocks are respectively arranged on two sides of the first extending part and are inserted into and matched with the second limiting grooves.

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

A 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 limiting bulges can be clamped into the first limiting grooves mainly through the deformation of the limiting bulges, the deformation is less, and labor is saved, so that the assembling is convenient.

Drawings

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

FIG. 2 is a second schematic 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 schematic structural view of the outer leg of the chair leg of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

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 first plane; 24. A second plane; 25. a first limit groove; 26. a first raised block; 27. a second bump; 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; 32. a third plane; 33. a first curved bend; 34. a limiting bulge; 340. a fourth plane; 341. a fifth plane; 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 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," 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 disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. 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.

In the present invention, for convenience of description, "up" and "down" are the upper and lower sides of the conventional meaning, 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 face, the inner chair leg 2 is provided with an outer end face, and the inner end face is partially attached to the outer end face.

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. Because the inner end surface and the outer end surface are used as a pair of surfaces which are matched with each other, if the matched reference is an arc-shaped surface, the requirement on the processing precision is very high, and in the embodiment of the application, the inner end surface and the outer end surface are used as the matched reference through planes, the requirement on the processing precision can be obviously reduced, and meanwhile, the first plane 23 and the second plane 24 are mutually attached, which is more favorable for force transmission than the attachment of the arc-shaped surfaces, namely, the supporting strength of the whole chair leg is better;

in the embodiment of the present application, as shown in fig. 3, 4, 5 and 6, a mounting groove 21 is provided on the inner chair leg, a first arc-shaped curved surface 22 and a first plane 23 which are concave outwards are provided on the side walls of both sides of the mounting groove 21, the first plane 23 is connected with the lower edge of the first arc-shaped curved surface 22, and a second plane 24 is provided on the inner side wall of the mounting groove 21; the inner end surface of the outer chair leg 3 extends inwards to form a first extending part 31, the first extending part 31 is provided with a third plane 32 used for abutting against the second plane 24 and a first arc-shaped bending part 33 used for being matched with the first arc-shaped bending surface 22, and therefore at least part of the inner end surface of the outer chair leg 3 abuts against the outer end surface 20 of the inner chair leg;

the bottom wall of the mounting groove 21 is provided with a first limiting groove 25, the upper surface of the first extending portion 31 is provided with a limiting protrusion 34, and the limiting protrusion 34 is matched with the first limiting groove 25 to prevent the outer chair leg 3 from rotating.

Therefore, in the assembling process, the limiting protrusions 34 can be clamped into the first limiting grooves 25 mainly through deformation of the limiting protrusions 34, the deformation is small, and labor is saved, so that the assembling is convenient.

In the embodiment of the present application, the upper end surface of the limiting protrusion 34 includes a fourth plane 340 and a fifth plane 341 forming an included angle, and a second arc-shaped curved surface 342 for connecting the fourth plane 340 and the fifth plane 341, the fourth plane 340 is located outside the fifth plane 341 and faces the inner end surface of the outer chair leg 3, and the fourth plane 340 abuts against the first limiting groove 25;

and the bottom wall of the first limit groove 25 comprises two planes forming an included angle and a third arc-shaped curved surface for connecting the two planes, and one of the two planes is abutted to the fourth plane 340.

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 bulge 34 and the first limiting groove 25 do not have force transmission, namely the limiting bulge 34 as the vulnerable part is not stressed, thereby prolonging the service life of the chair leg.

In the embodiment of the present application, the included angle between the fourth plane 340 and the horizontal plane is greater than 75 °, so as to ensure the stability of the assembled outer chair leg 3.

In the embodiment of the present application, an included angle between the fifth plane 341 and a horizontal plane is less than 45 °, and when the limiting protrusion 34 is clamped into the first limiting groove 25, an included angle is formed between the fifth plane 341 and a seventh plane in the first limiting groove 25; thereby ensuring that the limit projection 34 can be smoothly clamped into the first limit groove 25.

In the embodiment of the present application, the outer end surface of the limiting protrusion 34 is at least partially connected to the inner end surface of the outer chair leg 3; thereby providing the stop protrusion 34 with greater structural strength.

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, and the second plane 24 is disposed on the first protruding block 26; this is provided in order to enable the third plane 32 to better abut against the second plane 24 during the rotation of the outer leg 3.

In the embodiment of the present application, the side walls of the mounting groove 21 at both sides are provided with a second protruding block 27 and a third protruding block 28, the second protruding block 27 is located at the inner side of the third protruding block 28, the first arc-shaped curved surface 22 and the first plane 23 form part of the inner side wall of the second protruding block 27, and the 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 the looseness between the outer chair leg 3 and the inner chair leg 2 caused by the manufacturing precision or repeated installation and other reasons can be 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.

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) Extending the extending block of the outer chair leg 3 into the mounting groove 21 until the first extending part 31 is arranged on the left first plane 23 and the right first plane 23;

3) The outer chair leg 3 is rotated outwards until the second plane 24 is propped against the third plane 32, and the limit bulge 34 is clamped into the first limit groove 25, thereby completing the fixation of the outer chair leg 3;

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 (10)

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 and installing 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 side walls of two sides of the mounting groove (21) are respectively provided with a first arc-shaped bending surface (22) and a first plane (23), the first plane (23) is connected with the lower edge of the first arc-shaped bending surface (22), and the inner side wall of the mounting groove (21) is provided with a second plane (24); the inner end surface of the outer chair leg (3) extends inwards to form a first extending part (31), a third plane (32) used for abutting against the second plane (24) and a first arc-shaped bending part (33) used for being matched with the first arc-shaped bending surface (22) are arranged on the first extending part (31), and then at least part of the inner end surface of the outer chair leg (3) abuts against the outer end surface (20) of the inner chair leg; it is characterized in that;

the chair comprises an outer chair leg (3) and is characterized in that a first limiting groove (25) is formed in the bottom wall of the mounting groove (21), a limiting protrusion (34) is arranged on the upper surface of the first extending portion (31), and the limiting protrusion (34) is matched with the first limiting groove (25) to prevent the outer chair leg (3) from rotating.

2. A chair foot according to claim 1, characterised in that the upper end surface of the limiting protrusion (34) comprises a fourth plane (340) and a fifth plane (341) forming an included angle, and a second arc-shaped curved surface (342) for connecting the fourth plane (340) and the fifth plane (341), the fourth plane (340) is located outside the fifth plane (341) and faces the inner end surface of the outer chair foot (3), and the fourth plane (340) abuts against the first limiting groove (25).

3. A chair foot according to claim 2, characterised in that the angle between the fourth plane (340) and the horizontal is more than 75 °; the included angle between the fifth plane (341) and the horizontal plane is less than 45 degrees.

4. A chair foot according to claim 1, characterised in that the outer end surface of the stop protrusion (34) is at least partly connected to the inner end surface of the outer chair foot (3).

5. A chair foot according to claim 1, characterised in that the bottom wall of the first retaining groove (25) comprises two planes forming an included angle and a third curved surface connecting the two planes, one of the planes being in abutment with the fourth plane (340).

6. A chair foot according to claim 1, characterised in that the inner side wall of the mounting groove (21) is provided with at least one first protruding block (26), and the first protruding block (26) is provided with the second flat surface (24).

7. The chair foot according to claim 1, characterized in that the side walls of the two sides of the mounting groove (21) are provided with a second convex block (27) and a third convex block (28), the second convex block (27) is positioned at the inner side of the third convex block (28), the first arc-shaped curved surface (22) and the first plane (23) form part of the inner side wall of the second convex block (27), and the gap between the second convex block (27) and the third convex block (28) forms a second limiting groove (29);

and fourth protruding blocks (35) are respectively arranged on two sides of the first extending portion (31), and the fourth protruding blocks (35) are inserted into and matched with the second limiting grooves (29).

8. The chair foot according to claim 7, characterized in that the two sides of the first extending part (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).

9. A chair foot according to claim 7, characterized in that the outer side wall of the second convex block (27) is provided with a fourth arc-shaped curved surface (270), and the fourth convex block (35) is provided with a fifth arc-shaped curved surface (351) which is used for matching with the fourth arc-shaped curved surface (270).

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

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