CN213188826U - Connection structure of support leg and center piece, support leg, center piece, chassis and seat - Google Patents

Abstract

The utility model relates to a connection structure, stabilizer blade, centre piece, chassis and seat of stabilizer blade and centre piece belongs to seat connection structure technical field. The connecting structure of the supporting legs and the central piece comprises: a center piece connecting part arranged on the periphery of the center piece and used for being connected with the support legs; and the support leg connecting part is arranged at one end of the support leg and is used for being connected with the central piece. Two side walls of the central piece connecting part are also provided with rotary limiting grooves, and clamping platforms are arranged inside the rotary limiting grooves; the two side surfaces of the support leg connecting part are respectively provided with a rotary limiting bulge protruding outwards, and the lower surface is provided with an abutting part. The connection structure of the support legs and the central piece is stressed stably, and stress points with weak strength do not exist, so that the corresponding chassis and the seat have reliable performance and long service life.

Description

Connection structure of support leg and center piece, support leg, center piece, chassis and seat

Technical Field

The utility model relates to a seat connection structure technical field, concretely relates to connection structure, stabilizer blade, centre piece, chassis and seat of stabilizer blade and centre piece.

Background

The existing chair leg is usually an integrally formed plastic part or metal part, however, to the integrally formed chair leg, the difficulty of the forming process is large, and the existing chair leg is specifically embodied as follows: the chair leg has the advantages of large volume, complex structure, long time requirement of injection molding, casting molding and other processes, complex mechanical cold machining process and low production efficiency.

In addition, the chair legs occupy larger space, and the packaging and transportation costs are higher.

In order to solve the above technical problems, there is provided a corresponding solution in the prior art, for example, a detachable chair leg is disclosed in the chinese utility model patent application No. 201520047333.X, which comprises a center part and legs, the center part has a center hole, the center part has a plurality of slots for mounting the legs along an axial circumference array, the slots are provided with fastening limiting parts, the ends of the legs and the center part are provided with fastening strips, the fastening strips are provided with fastening tongues for fastening with the fastening limiting parts, the fastening limiting parts and the fastening tongues are fastening surfaces, the ends of the legs and the center part are connected with a circular shaft protrusion, the circular shaft protrusion is located at the lower ends of the fastening strips, the ends of the circular shaft protrusion are arc surfaces, the slots of the center part are provided with limiting openings, the limiting openings are matched with the shapes of the connecting parts, the slots of the center part are provided with rotation shaft slots below the fastening limiting parts, the inner surfaces of the rotation shaft, the cambered surface is matched with the protruding radian of the circular shaft, and the chair leg has the advantages of convenient assembly and disassembly, light weight, low cost and firm structure.

However, the following disadvantages exist: the stress points of the support legs and the central piece are positioned on the buckle tongue, and the support strength of the buckle tongue is poor, so that the chassis structure of the seat is easily damaged.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model discloses in order to provide a connection structure of stabilizer blade and centerpiece for one of purpose to provide corresponding stabilizer blade and centerpiece for two of purpose, with provide the chassis that adopts this stabilizer blade and centerpiece for three and provide following technical scheme, this stabilizer blade is firm with the connection structure atress of centerpiece, does not have the fragile stress point of intensity, makes corresponding chassis and seat dependable performance, long service life.

The utility model provides a technical scheme as follows of above-mentioned problem:

the connection structure of stabilizer blade and centerpiece contains:

a center connecting part arranged at the outer periphery of the center and used for connecting with the support legs;

the supporting leg connecting part is arranged at one end of the supporting leg and is used for being connected with the central piece;

the central piece connecting part is a groove, and the groove at least comprises an outer opening facing the outer side of the central piece and a lower opening facing the lower side of the central piece;

two side walls shared by the outer opening and the lower opening are respectively provided with a rotation limiting groove, and one side of the bottom surface of the rotation limiting groove, which faces the lower opening, is provided with a supporting leg connecting part inlet;

a clamping table is arranged in the central piece connecting part, the clamping table is arranged on the inner side wall opposite to the outer opening, and the clamping table comprises a clamping surface at least partially facing the upper side of the central piece connecting part;

the supporting leg connecting part is a raised block and comprises an upper surface, a lower surface, two side surfaces and a front surface, wherein when the central part connecting part and the supporting leg connecting part are in an installation finished state, in the central part connecting part, the upper surface is adjacent to the surface opposite to the lower opening, the lower surface is positioned at the lower opening, the two side surfaces are respectively adjacent to the two side walls shared by the outer opening and the lower opening, and the front surface is adjacent to the surface opposite to the outer opening;

the two side surfaces are respectively provided with an outward-protruding rotation limiting protrusion which is used for being clamped with the rotation limiting groove;

and the lower surface is provided with a butting part used for butting and clamping the clamping surface.

Preferably, the rotation limiting groove is formed by an entrance channel and a rotation area, the rotation limiting protrusion enters the entrance channel through the entrance of the leg connecting part until reaching the rotation area, and then the rotation limiting protrusion rotates in the rotation area to complete installation.

Preferably, the two rotation limiting protrusions have the same shape and size, and correspondingly, the two rotation limiting grooves have the same shape and size.

Preferably, in the above technical solution, the width of the outer periphery of the rotation limiting protrusion is adapted to the width of the inner side of the rotation limiting groove.

Preferably, in the above technical solution, the rotation limiting protrusion is a cylindrical protrusion, and correspondingly, the rotation area includes a partial circular arc-shaped inner side wall.

Preferably, the upper surface is provided with a first hook, correspondingly, a second hook is arranged in the center connecting part and on the surface opposite to the lower opening, and the center connecting part and the support leg connecting part are hooked with each other when the installation is completed.

Preferably, in the above-described aspect, the first hook is integrally formed by a hook portion and an elastic arm, and the elastic arm is connected to the upper surface.

Preferably, the first hook is disposed in a through hole or a blind hole dug in the upper surface.

Preferably, in the above aspect, the front surface has a contour corresponding to a contour of a surface facing the outer opening, and the front surface is connected to the surface facing the outer opening in the center connecting portion in a manner of being in contact with the surface facing the outer opening.

The supporting leg, its one end is provided with the supporting leg connecting portion in any one above-mentioned technical scheme.

Preferably, in the above technical solution, the contour of the surface where the leg connecting portion is located is adapted to the outer contour of the corresponding portion of the center piece.

The outer periphery of the central piece is provided with a plurality of central piece connecting parts in any one of the technical schemes.

Preferably, the center member has a center hole in the middle.

Preferably, in the above aspect, the plurality of center piece connecting portions are uniformly distributed in the outer peripheral portion.

The chassis is formed by installing the central piece in the technical scheme and a plurality of support legs in the technical scheme.

The seat adopts the chassis in the technical scheme.

In summary, the embodiment of the present application has the following beneficial effects:

1) the connection structure of stabilizer blade and center piece use these two combination fixed knot of rotatory spacing groove/rotatory spacing arch, joint platform/butt portion to construct as the basis, the atress is firm, does not have the fragile stress point of intensity for corresponding chassis and seat dependable performance, long service life.

2) Furthermore, the connection structure of stabilizer blade and centre piece be aided with the joint structure of first trip and second trip for corresponding seat is when the state of lifting up, and the stabilizer blade is difficult for dropping downwards, can make things convenient for the holistic transportation of seat.

3) Furthermore, the connection structure of the support leg and the central piece in the embodiment of the present application is assisted by the attachment connection of the front surface and the opposite surface of the outer opening, when the chassis bears downward pressure, the attachment connection structure enables the front surface to participate in the pressure bearing structure, so as to prevent the deformation and even breakage of the abutting portion due to excessive stress, and further increase the stress strength and stability of the chassis.

Drawings

Fig. 1 is a schematic structural diagram of a chassis according to an embodiment of the present application;

FIG. 2 is a schematic view of a leg structure according to an embodiment of the present application;

FIG. 3 is an enlarged view of area A of FIG. 2;

FIG. 4 is a schematic view of the structure of the connecting portion of the center piece on the center piece;

FIG. 5 is an enlarged view of area A of FIG. 4;

FIG. 6 is a longitudinal cross-sectional view of the chassis;

in the figure, 1-center piece, 1-1-center piece connecting part, 1-1.1-outer opening, 1-1.2-lower opening, 1-1.3-rotation limiting groove, 1-1.31-support connecting part inlet, 1-1.32-inlet channel, 1-1.33-rotation area, 1-1.4-clamping table, 1-1.5-second clamping hook, 1-2-center hole, 2-support, 2-1-support connecting part, 2-1.1-upper surface, 2-1.2-lower surface, 2-1.21-abutting part, 2-1.3-side surface, 2-1.4-front surface, 2-1.5-rotation limiting bulge, 2-1.6-first clamping hook, 2-1.61-clamping hook part, 2-1.62-elastic arm.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of 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", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and 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.

In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first", "second", etc. 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.

The present invention will be described in detail with reference to examples.

Example (b): referring to fig. 1-6, the connection structure of the support leg and the central member is formed by connecting a central member connection part 1-1 and a support leg connection part 2-1.

The connecting part 1-1 of the central piece is a groove arranged on the periphery of the central piece 1, the groove comprises an outer opening 1-1.1 facing the periphery of the central piece 1 and a lower opening 1-1.2 facing the lower side of the central piece 1, two side walls shared by the outer opening 1-1.1 and the lower opening 1-1.2 are respectively provided with a rotary limiting groove 1-1.3 with the same shape, one side of the bottom surface of the rotary limiting groove 1-1.3 facing the lower opening 1-1.2 is provided with a leg connecting part inlet 1-1.31, a through inlet channel 1-1.32 is arranged above the leg connecting part inlet 1-1.31, and a rotary area 1-1.33 is arranged above the inlet channel 1-1.32;

correspondingly, the support leg connecting part 2-1 is a convex block which comprises an upper surface 2-1.1, a lower surface 2-1.2, two side surfaces 2-1.3 and a front surface 2-1.4, wherein the upper surface 2-1.1 is adjacent to the surface opposite to the lower opening 1-1.2, the lower surface 2-1.2 is positioned at the lower opening 1-1.2, the two side surfaces 2-1.3 are respectively adjacent to the two side walls shared by the outer opening 1-1.1 and the lower opening 1-1.2, the front surface 2-1.4 is adjacent to the surface opposite to the outer opening 1-1.1, and the two side surfaces are respectively provided with cylindrical rotary limiting bulges 2-1.5 which have the same shape and are convex outwards and are used for being clamped with the rotary limiting grooves 1-1.3;

when clamping, the rotation limiting bulge 2-1.5 enters the entrance channel 1-1.32 through the leg connecting part entrance 1-1.31, the leg 2 is moved upwards until the rotation limiting bulge 2-1.5 reaches the rotation area 1-1.33, and then the rotation limiting bulge 2-1.5 rotates in the rotation area 1-1.33 to complete installation.

A clamping table 1-1.4 is also arranged on the inner side wall of the central piece connecting part 1-1 opposite to the outer opening 1-1.1, and a clamping surface facing the upper side of the central piece connecting part 1-1 is arranged on the clamping table 1-1.4;

correspondingly, the lower surface 2-1.2 of the support leg connecting part 2-1 is provided with an abutting part 2-1.21 for abutting against the clamping connection with the clamping connection surface, when the rotary limiting bulge 2-1.5 rotates in the rotary area 1-1.33 to the position where the installation is completed, the abutting part 2-1.21 abuts against the clamping connection with the clamping connection surface, and the purpose of doing so is that: this abutment structure provides support for the downward pressure by the clamping table 1-1.4/abutment 2-1.21.

In a preferred embodiment, the peripheral width of the rotation-restricting protrusion 2-1.5 is the same as or slightly smaller than the inner width of the rotation-restricting groove 1-1.3, so that the rotation-restricting protrusion 2-1.5 can enter the rotation-restricting groove 1-1.3, and the rotation-restricting protrusion 2-1.5 can be horizontally restricted by the rotation-restricting groove 1-1.3, thereby preventing the chair leg 2 from being pulled out.

In a preferred embodiment, the rotation area 1-1.33 comprises a partial circular arc-shaped inner side wall, so that the rotation limiting protrusion 2-1.5 is free from rotation therein and is substantially limited by the circular arc-shaped inner side wall.

In another embodiment, the upper surface 2-1.1 of the leg connecting portion 2-1 is provided with a first hook 2-1.6, correspondingly, the opposite surface of the lower opening 1-1.2 in the center connecting portion 1-1 is provided with a second hook 1-1.5, when the center connecting portion 1-1 and the leg connecting portion 2-1 are in the installation completion state, the first hook 2-1.6 and the second hook 1-1.5 are hooked with each other, so that the leg 2 is not easy to drop down when the corresponding seat is lifted up, the seat can be in a suspended state without worrying about the falling of the leg 2, and the overall short-distance movement of the seat is facilitated.

In a preferred embodiment, the first hook 2-1.6 is disposed in a through hole or a blind hole dug in the upper surface 2-1.1, and the first hook 2-1.6 is integrally formed by the hook portion 2-1.61 and the elastic arm 2-1.62, and is integrally connected to the upper surface 2-1.1 through the elastic arm 2-1.62, so that when the first hook 2-1.6 passes through the second hook 1-1.5, the elastic arm 2-1.62 is elastically deformed to contact the first hook 2-1.6 and the second hook 1-1.5, and then the elastic deformation is restored to allow the first hook 2-1.6 and the second hook 1-1.5 to be engaged with each other.

In a preferred embodiment, the contour of the front surface 2-1.4 is matched with the contour of the opposite surface of the outer opening 1-1.1, and the front surface 2-1.4 is in fit connection with the opposite surface of the outer opening 1-1.1 in the central piece connecting part 1-1, so that when the chassis bears downward pressure, the fit connection structure ensures that the front surface 2-1.4 also participates in a pressure bearing structure, the abutting part 2-1.21 is prevented from being deformed or even broken due to over-stress, and the stress strength and the stability of the chassis are further increased.

When the device is actually used, firstly, the two rotation limiting bulges 2-1.5 on the support leg connecting part 2-1 are inserted into the two rotation limiting grooves 1-1.3 in the central part connecting part 1-1, the rotation limiting bulges 2-1.5 sequentially enter the rotation areas 1-1.33 through the support leg connecting part inlets 1-1.31 and the inlet channels 1-1.32, the rotation limiting bulges 2-1.5 of the support leg 2 rotate anticlockwise in the rotation areas 1-1.33, so that the support leg 2 rotates to the position where the installation is finished, and at the moment, the abutting parts 2-1.21 abut against and are clamped with the clamping surfaces.

Further, in the embodiment with the first hook 2-1.6 and the second hook 1-1.5, when the support leg 2 is rotated to the mounting position, the first hook 2-1.6 and the second hook 1-1.5 are hooked with each other.

Further, in embodiments where the contour of the front surface 2-1.4 matches the contour of the opposing surface of the outer opening 1-1.1, the front surface 2-1.4 is in abutting engagement with the opposing surface of the outer opening 1-1.1 when the foot 2 is rotated to the installed position.

The supporting leg 2 and the central piece 1 correspond to each other, one end of the supporting leg 2 is provided with the supporting leg connecting part 2-1 in the technical scheme of any one of the embodiments, and the periphery of the central piece 1 is uniformly provided with a plurality of central piece connecting parts 1-1 in the technical scheme of any one of the embodiments.

In the above technical solution, it is easy to think that the other end of the support leg 2 is provided with a roller, and the middle part of the central piece 1 is provided with a central hole 1-2 for inserting the seat air lever.

In the preferred embodiment, the contour of the surface of the leg connecting part 2-1 is adapted to the outer contour of the corresponding part of the center piece 1, in order to prevent the chair leg 2 from swinging relative to the center piece 1 when the chassis is turned or moved.

The corresponding chassis is formed by splicing and installing the support legs 2 and the central part 1 in the technical scheme of any embodiment.

The corresponding seat adopts the chassis described in the technical scheme of any one of the embodiments.

Claims (16)

1. The connection structure of stabilizer blade and centerpiece contains:

a center connecting part (1-1) arranged on the periphery of the center (1) and used for connecting with the support legs (2);

the support leg connecting part (2-1) is arranged at one end of the support leg (2) and is used for being connected with the central piece (1);

the method is characterized in that:

the central piece connecting part (1-1) is a groove, and the groove at least comprises an outer opening (1-1.1) facing the outer side of the central piece (1) and a lower opening (1-1.2) facing the lower side of the central piece (1);

two side walls shared by the outer opening (1-1.1) and the lower opening (1-1.2) are respectively provided with a rotary limiting groove (1-1.3), and one side of the bottom surface of the rotary limiting groove (1-1.3) facing the lower opening (1-1.2) is provided with a support leg connecting part inlet (1-1.31);

a clamping table (1-1.4) is arranged in the central piece connecting part (1-1), the clamping table (1-1.4) is arranged on the inner side wall opposite to the outer opening (1-1.1), and the clamping table (1-1.4) comprises a clamping surface at least partially facing the upper side of the central piece connecting part (1-1);

the foot connecting part (2-1) is a convex block which comprises an upper surface (2-1.1), a lower surface (2-1.2), two side surfaces (2-1.3) and a front surface (2-1.4), wherein, when the central piece connecting part (1-1) and the support leg connecting part (2-1) are in the installation completion state, in the central piece connection (1-1), the upper surface (2-1.1) is adjacent to the face opposite the lower opening (1-1.2), the lower surface (2-1.2) is located at the lower opening (1-1.2), the two side surfaces (2-1.3) are respectively adjacent to two side walls shared by the outer opening (1-1.1) and the lower opening (1-1.2), the front surface (2-1.4) is adjacent to the face opposite the outer opening (1-1.1);

the two side surfaces (2-1.3) are respectively provided with an outward-protruding rotary limiting protrusion (2-1.5) which is used for being clamped with the rotary limiting groove (1-1.3);

and the lower surface (2-1.2) is provided with an abutting part (2-1.21) which is used for abutting against the clamping surface to be clamped.

2. A connecting structure of a leg and a centerpiece, according to claim 1, wherein: the rotation limiting groove (1-1.3) is composed of an inlet channel (1-1.32) and a rotation area (1-1.33), the rotation limiting protrusion (2-1.5) enters the inlet channel (1-1.32) through the leg connecting part inlet (1-1.31) until reaching the rotation area (1-1.33), and then the rotation limiting protrusion (2-1.5) rotates in the rotation area (1-1.33) to complete installation.

3. The structure for connecting a leg to a centerpiece, according to claim 2, wherein: the shapes and the sizes of the two rotation limiting bulges (2-1.5) are consistent, and correspondingly, the shapes and the sizes of the two rotation limiting grooves (1-1.3) are also consistent.

4. A connecting structure of legs and a center piece according to claim 3, wherein: the peripheral width of the rotation limiting bulge (2-1.5) is matched with the inner width of the rotation limiting groove (1-1.3).

5. A connection structure of a leg and a centerpiece, according to claim 3 or 4, wherein: the rotation limiting protrusions (2-1.5) are cylindrical protrusions, and correspondingly, the rotation area (1-1.33) comprises a part of circular arc-shaped inner side wall.

6. A connecting structure of a leg and a centerpiece, according to claim 1, wherein: the upper surface (2-1.1) is provided with a first clamping hook (2-1.6), correspondingly, a second clamping hook (1-1.5) is arranged on the surface, opposite to the lower opening (1-1.2), in the center connecting part (1-1), and when the center connecting part (1-1) and the support leg connecting part (2-1) are in an installation completion state, the first clamping hook (2-1.6) and the second clamping hook (1-1.5) are mutually hooked.

7. A connecting structure of legs and a center piece according to claim 6, wherein: the first hook (2-1.6) is formed by integrally forming a hook part (2-1.61) and an elastic arm (2-1.62), and the elastic arm (2-1.62) is connected with the upper surface (2-1.1).

8. A connecting structure of legs and a center piece according to claim 7, wherein: the first clamping hook (2-1.6) is arranged in a through hole or a blind hole dug on the upper surface (2-1.1).

9. The connection structure of the legs to the centerpiece according to claim 1, 6, 7 or 8, wherein: the contour of the front surface (2-1.4) is matched with the contour of the surface opposite to the outer opening (1-1.1), and the front surface (2-1.4) is in fit connection with the surface opposite to the outer opening (1-1.1) in the central piece connecting part (1-1).

10. The stabilizer blade, its characterized in that: one end of which is provided with a foot connecting part (2-1) according to any of claims 1-9.

11. Foot according to claim 10, characterized in that: the profile of the surface where the supporting leg connecting part (2-1) is located is matched with the outer profile of the corresponding part of the central piece (1).

12. The centerpiece, its characterized in that: the outer circumference of which is provided with a number of centre connections (1-1) according to any one of claims 1-9.

13. The centerpiece of claim 12, wherein: the middle is provided with a central hole (1-2).

14. The centerpiece of claim 12 or 13, wherein: the central piece connecting parts (1-1) are uniformly distributed on the peripheral part.

15. The chassis, its characterized in that: formed by a hub (1) according to any one of claims 12 to 14 and a number of legs (2) according to claim 10 or claim 11.

16. A seat, characterized in that: the chassis of claim 15.

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