Chair frame structure and chair

Abstract

The utility model discloses a chair frame structure and a chair, the chair frame structure comprises a chair frame main body, the chair frame main body is provided with a backrest soldering lug, the backrest soldering lug is used for being connected with a backrest plate through a screw, the outer side of the backrest soldering lug is provided with a cover body, and the inner side of the cover body is provided with a concave part used for accommodating the screw joint of the backrest soldering lug and the backrest plate. The cover body is arranged on the outer side of the backrest soldering lug, and the concave part for accommodating the joint of the backrest soldering lug and the backrest plate screw is arranged on the inner side of the cover body, so that the joint is effectively shielded, and the use safety problem caused by exposure of the screw is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to furniture technical field especially relates to a chair frame structure and chair. BACKGROUND

[0002] The common curved wood chair on the market adopts integral type structure design, that is, the chair frame and the chair leg are combined into a whole through metal welding, and then the seat plate and the backrest are installed. Although this integral type design guarantees the stability and durability of the chair to a certain extent, it also has certain problems: because the components are closely connected, the integrity is excessively concerned and the local details are ignored during processing, which can lead to problems such as exposed screws. The user may be scratched by the edge of the screw connection when carrying the chair.

[0003] Therefore, a chair frame structure with high safety in use is urgently needed. SUMMARY

[0004] The main purpose of the utility model is to provide a chair frame structure and chair to solve the above technical problems.

[0005] The purpose of the utility model can be achieved by adopting the following technical scheme:

[0006] A chair frame structure comprises: a chair frame body, a backrest welding piece is arranged on the chair frame body, the backrest welding piece is used for being connected with a backrest plate through a screw, a cover body is arranged on the outer side of the backrest welding piece, and the inner side of the cover body has a recessed part for accommodating the screw connection part of the backrest welding piece and the backrest plate.

[0007] The chair frame structure further comprises a buckle connection structure for detachably connecting the cover body and the backrest welding piece.

[0008] The buckle connection structure comprises: an elastic buckle arranged on the cover body; and a clamping groove arranged on the backrest welding piece, and the clamping groove is matched with the elastic buckle.

[0009] The elastic buckle comprises: a connecting part fixedly connected with the cover body; and a plurality of clamping parts formed by extending from the connecting part, and gaps are formed between the clamping parts.

[0010] The cover body comprises: a vertical part and a horizontal part connected with each other, the recessed part is arranged on the inner side of the vertical part, and the horizontal part is arranged below the backrest plate connected with the backrest welding piece.

[0011] The outer surface of the vertical part is a first curved surface structure, and the connection part of the vertical part and the horizontal part is a second curved surface structure.

[0012] The backrest welding sheet is internally provided with a gasket, which is used to fill the gap between the backrest welding sheet and the backrest plate.

[0013] The chair frame structure further comprises a seat plate welding sheet arranged on the chair frame body, which is used to be connected with a seat plate by a screw.

[0014] The chair frame body is an integrally formed metal bending rod, and the chair frame body has a top end and a bottom end arranged oppositely, the backrest welding sheet is arranged at the top end of the chair frame body, and the seat plate welding sheet is arranged at the bottom end of the chair frame body.

[0015] The chair comprises the chair frame structure, the backrest welding sheet of the chair frame structure is connected with a backrest plate by a screw, the seat plate welding sheet of the chair frame structure is connected with a seat plate by a screw, and the seat plate is connected with a chair leg.

[0016] The chair frame structure has the beneficial technical effects that the cover body is arranged on the outside of the backrest welding sheet, the recessed part for accommodating the screw connection position of the backrest welding sheet and the backrest plate is arranged on the inside of the cover body, the screw connection position is effectively shielded, and the use safety problem caused by the exposed screw is solved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 The chair frame structure provided by the embodiments of the present application is shown in a three-dimensional view of the chair frame body.

[0019] Figure 2 The chair frame structure provided by the embodiments of the present application is shown in a front view of the upper part of the chair frame body and the backrest welding sheet thereon.

[0020] Figure 3 The chair frame structure provided by the embodiments of the present application is shown in a three-dimensional view of the chair frame body from another perspective.

[0021] Figure 4 The chair frame structure provided by the embodiments of the present application is shown in a three-dimensional view of the cover plate.

[0022] Figure 5 The chair frame structure provided by the embodiments of the present application is shown in a three-dimensional view of the cover body and the gasket. Figure 4 The chair frame structure provided by the embodiments of the present application is shown in a three-dimensional view of the cover body and the gasket.

[0023] Figure 6 The chair frame structure provided by the embodiments of the present application is shown in a three-dimensional view of the cover body and the gasket.

[0024] Figure 7 A chair three-dimensional view is provided for the embodiment of the utility model;

[0025] Figure 8 For Figure 7 The enlarged view of B.

[0026] Mark explanation:

[0027] In the drawing: 10-chair frame main body, 11-upper section, 12-middle section, 13-lower section, 20-backrest welding piece, 21-screw mounting hole, 40-backrest plate, 50-cover, 51-recess, 501-vertical part, 502-horizontal part, 52-washer, 53-strip structure, 60-buckle connection structure, 61-elastic buckle, 62-card slot, 611-connection part, 612-clamping part, 80-seat under welding piece, 90-seat plate, 100-chair leg. Specific implementation

[0028] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0029] It should be understood that when used in the specification and the appended claims, the terms "comprise" and "include" indicate the presence of described features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0030] It should also be understood that the terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the specification and the appended claims of the utility model, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0031] It should be further understood that the term "and / or" used in the specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0032] As Figures 1-6As shown, the chair frame structure provided by the embodiment of the utility model, including: chair frame main body 10, be provided with backrest welding piece 20 on chair frame main body 10, backrest welding piece 20 is used to be connected with backrest plate 40 through screw, backrest welding piece 20 outside is provided with cover 50, cover 50 inside has the recess 51 for accommodating the screw joint of backrest welding piece 20 and backrest plate 40.

[0033] In the embodiment, the backrest welding piece 20 is arranged on the chair frame main body 10. Specifically, the backrest welding piece 20 is fixed at the top end of the chair frame main body 10 by welding. The backrest welding piece 20 is used to be connected with the backrest plate 40 by screws (not shown in the figure), so as to realize the fixed installation of the backrest plate 40 and the chair frame main body 10.

[0034] The cover 50 is arranged on the outside of the backrest welding piece 20. The inside of the cover 50 has a recess 51, and the shape and size of the recess 51 are matched with the screw joint of the backrest welding piece 20 and the backrest plate 40. Here, the outside is the side of the backrest welding piece 20 away from the backrest plate 40, and the inside is the side of the cover 50 close to the backrest welding piece 20. Through this design, the cover 50 can effectively cover and hide the screw joint, thereby solving the problem of exposed screws in the traditional chair frame structure, and further avoiding the scratching problem caused by the exposed screws.

[0035] In a specific embodiment, a plurality of screw mounting holes 21 are arranged through the surface of the backrest welding piece 20, so as to facilitate the fixed connection of the backrest welding piece 20 and the backrest plate 40 by screws.

[0036] In a specific embodiment, the depth of the recess 51 is greater than the protruding length of the screw, so as to ensure that the screw is completely hidden inside the cover 50. At the same time, the width and length of the recess 51 are matched with the size of the screw joint, so as to ensure convenient installation and achieve good covering effect. This structure design can avoid the safety hazard caused by the exposed screws in the traditional chair frame structure.

[0037] In an embodiment, further comprising: a buckle connection structure 60 for detachably connecting the cover 50 and the backrest welding piece 20.

[0038] In the embodiment, as shown, Figure 1 The chair frame structure further comprises a buckle connection structure 60 for detachably connecting the cover 50 and the backrest welding piece 20. The design of the buckle connection structure 60 makes the cover 50 can be conveniently installed and detached, which is convenient for later maintenance and replacement.

[0039] Specifically, the buckle connection structure 60 adopts a buckle structure design, which can realize quick connection and separation between the cover 50 and the back welding sheet 20. When installing, the cover 50 only needs to be aligned with the position of the back welding sheet 20, and then pressed to complete the installation without using any additional tools. When disassembling is needed, the cover 50 can also be conveniently taken off from the back welding sheet 20, thereby facilitating maintenance, replacement and other operations.

[0040] In an embodiment, the buckle connection structure 60 comprises: an elastic buckle 61 arranged on the cover 50; and a clamping groove 62 arranged on the back welding sheet 20, which is matched with the elastic buckle 61.

[0041] In this embodiment, as shown in Figure 1 , Figure 2 and Figure 4 and Figure 5 , the buckle connection structure 60 comprises the elastic buckle 61 arranged on the cover 50 and the clamping groove 62 arranged on the back welding sheet 20. The elastic buckle 61 is fixed on the inner side of the cover 50. Correspondingly, the clamping groove 62 matched with the elastic buckle 61 is arranged on the back welding sheet 20, and the shape and size of the clamping groove 62 are matched with the structure of the elastic buckle 61.

[0042] Specifically, the elastic buckle 61 is made of plastic material and has a certain elastic deformation capacity. The elastic buckle 61 can be tightly matched with the clamping groove 62 on the back welding sheet 20. When installing, the elastic buckle 61 will be elastically deformed under the action of pressing force and the cooperation of the clamping groove 62, and then continue to press the elastic buckle 61 to embed it into the clamping groove 62, thereby realizing the stable connection between the cover 50 and the back welding sheet 20.

[0043] The clamping groove 62 on the back welding sheet 20 adopts a structure design matched with the elastic buckle 61, which ensures that the elastic buckle 61 can be tightly matched, not only ensuring easy installation, but also generating enough friction and limiting effect to prevent the cover 50 from loosening or falling off during use.

[0044] The design of the buckle connection structure 60 not only simplifies the installation process, but also ensures the reliability of the connection. During daily use, even if the chair is hit or pulled by external force, the buckle connection structure 60 can maintain stable connection and will not easily loosen or fall off. At the same time, this connection method avoids the problems of inconvenient installation and appearance influence that may be caused by traditional screw connection.

[0045] In an embodiment, the elastic buckle 61 comprises: a connecting part 611 fixedly connected with the cover 50; and a plurality of clamping parts 612 formed by extending from the connecting part 611, and the clamping parts 612 have gaps between each other.

[0046] In this embodiment, as shown inFigure 5 As shown, the elastic buckle 61 includes a connecting portion 611 fixedly connected with the cover body 50, and four clamping portions 612 extended from the connecting portion 611. The connecting portion 611 is fixedly connected with the cover body 50 by way of integral molding, ensuring the connecting strength; the clamping portions 612 are extended from the connecting portion 611 and used for clamping cooperation with the clamping grooves 62 on the backrest welding sheet 20.

[0047] Specifically, the connecting portion 611 extends four clamping portions 612 spaced apart along the circumferential direction at one end away from the cover body 50, and a predetermined gap is arranged between two adjacent clamping portions 612. This design makes the elastic buckle 61 have a predetermined elastic deformation capacity. When the clamping portions 612 are subjected to external force during installation of the cover body 50, the clamping portions 612 will approach each other to produce elastic deformation, so that the clamping portions 612 can be smoothly inserted into the clamping grooves 62. After the clamping portions 612 completely enter the clamping grooves 62, the two clamping portions 612 will tend to return to the original state due to the elastic effect, but will maintain a certain amount of elastic deformation, thereby generating a continuous pre-tightening force with the clamping grooves 62, realizing stable clamping cooperation.

[0048] The structural design of the clamping portions 612 not only ensures that the buckle has appropriate elastic deformation performance, but also enhances the reliability and stability of the connection through the continuous pre-tightening force. During daily use, even if subjected to external force, the clamping state can still be stable, effectively preventing accidental falling of the cover body 50.

[0049] In a specific embodiment, the outer wall of each clamping portion 612 is adapted to the inner wall of the clamping groove 62. Specifically, the inner wall of the clamping groove 62 is curved, and the outer wall of the clamping portion 612 is also curved. By adopting a curved structure design, the contact area between the clamping portion 612 and the clamping groove 62 can be increased, improving the stability of the connection.

[0050] In another specific embodiment, the cross section of each clamping portion 612 is approximately square, having a certain height of the vertical surface. After the clamping portion 612 is smoothly inserted into the clamping groove 62, the clamping portion 612 will tend to return to the original state under its own elastic effect, forming a close fit with the inner wall of the clamping groove 62, and being able to generate stable clamping force and sufficient friction force.

[0051] In an embodiment, the cover body 50 includes a vertical portion 501 and a horizontal portion 502 connected with each other, the recessed portion 51 is arranged on the inner side of the vertical portion 501, and the horizontal portion 502 is arranged below the backrest plate 40 connected with the backrest welding sheet 20.

[0052] In the embodiment, as shown in Figure 4As shown, the cover 50 comprises a vertical part 501 and a horizontal part 502 connected with each other. The vertical part 501 is mainly used to shield the screw connection between the backrest welding sheet 20 and the backrest plate 40, and the horizontal part 502 is arranged below the backrest plate 40, so that the user can lift the chair through this part.

[0053] Specifically, the recess 51 is arranged at the inner side of the vertical part 501. The inner side here refers to the side of the vertical part 501 close to the backrest welding sheet 20. The depth, width and length of the recess 51 are adapted to the size of the screw connection between the backrest welding sheet 20 and the backrest plate 40, so as to completely accommodate and shield the screw connection.

[0054] The horizontal part 502 is arranged below the backrest plate 40 connected with the backrest welding sheet 20. This structure design makes the cover 50 better transition with the backrest plate 40. At the same time, the design of the horizontal part 502 also plays a role in strengthening the stability of the connection between the cover 50 and the backrest welding sheet 20, avoiding the cover 50 from falling off the backrest welding sheet 20 when the user carries the chair through the cover 50.

[0055] In a specific embodiment, as shown in Figure 4 The inner side of the vertical part 501 is provided with a strip structure 53 in a C-shaped shape. The strip structure 53 forms a space with a certain depth at the inner side of the vertical part 501, which is used as the recess 51.

[0056] In an embodiment, the outer surface of the vertical part 501 is a first curved surface structure, and the connection between the vertical part 501 and the horizontal part 502 is a second curved surface structure.

[0057] In this embodiment, as shown in Figure 3 The outer surface of the vertical part 501 adopts a smooth first curved surface structure, which gradually transitions from the center to the edge in an arc shape, avoiding the emergence of sharp corners. When the user needs to carry the chair, the palm can form a larger contact area with the outer surface of the cover 50, which can better carry the chair.

[0058] At the connection between the vertical part 501 and the horizontal part 502, a second curved surface structure is used for transition. This transition curved surface design, on the one hand, avoids the emergence of sharp corners at the connection, improving the safety in use; on the other hand, it also enhances the overall structural strength of the cover 50, so that it is not easy to deform or break when subjected to external force.

[0059] In an embodiment, as shown in Figure 6 and Figure 8 A gasket 52 is arranged at the inner side of the backrest welding sheet 20, which is used to fill the gap between the backrest welding sheet 20 and the backrest plate 40.

[0060] In this embodiment, the gasket 52 is used to fill the gap between the backrest welding piece 20 and the backrest panel 40 to improve the sealing performance and prevent the entry of dust and foreign objects.

[0061] Specifically, washer 52 is made of PVC material, which has good elasticity and sealing performance. The cross-sectional dimensions of washer 52 are adapted to the gap between backrest weld piece 20 and backrest panel 40.

[0062] In one specific embodiment, the washer 52 is clamped between the backrest welding piece 20 and the backrest plate 40, and at the same time, the washer 52 also abuts against the top of the horizontal part 502. This method can prevent the washer 52 from falling downward during use.

[0063] In one embodiment, it further includes: a seat underplate 80 disposed on the chair frame body 10, the seat underplate 80 being connected to the seat plate 90 by screws.

[0064] In this embodiment, as Figure 1 As shown, the chair frame structure also includes a seat underplate 80 disposed on the chair frame body 10. The seat underplate 80 can be connected to the seat plate 90 by screws (not shown in the figure), thereby reliably fixing the seat plate 90 to the chair frame body 10.

[0065] Specifically, the under-seat welding piece 80 is made of metal and is fixed to the bottom of the chair frame body 10 by welding. The under-seat welding piece 80 has multiple mounting holes for screws (not shown in the attached diagram). During installation, the seat plate 90 is placed on the under-seat welding piece 80, aligned with the mounting holes, and then the seat plate 90 is fastened to the under-seat welding piece 80 using screws. This connection method is not only convenient to assemble but also reliable.

[0066] In one embodiment, such as Figure 1 and Figure 3 As shown, the chair frame body 10 is a one-piece molded metal curved rod; the chair frame body 10 has a top end and a bottom end that are arranged opposite to each other, the backrest welding plate 20 is arranged at the top end of the chair frame body 10, and the seat welding plate 80 is arranged at the bottom end of the chair frame body 10.

[0067] In this embodiment, the chair frame body 10 adopts a one-piece molded metal curved rod structure. Specifically, the metal curved rod is shaped like a "Z" and includes a vertically extending upper section 11, an arc-shaped transition middle section 12, and a horizontally extending lower section 13. The top of the upper section 11 and the tail of the lower section 13 are positioned opposite each other, serving as the top and bottom ends of the chair frame body 10, respectively.

[0068] The back welding piece 20 is welded and fixed at the top end of the chair frame body 10. The seat lower welding piece 80 is welded and fixed at the bottom end of the chair frame body 10. The one-piece metal bending rod structure, in cooperation with the top end back welding piece 20 and the bottom end seat lower welding piece 80, forms the chair frame body 10 with simple structure, high strength and good stability.

[0069] As shown in Figure 7 and Figure 8 Corresponding to the above chair frame structure, the utility model embodiment further provides a chair, which comprises the chair frame structure of any one of the foregoing embodiments, the back welding piece 20 of the chair frame structure is connected with the back plate 40 through a screw, the seat lower welding piece 80 of the chair frame structure is connected with the seat plate 90 through a screw, and the seat plate 90 is connected with the chair leg 100.

[0070] In the embodiment, the back welding piece 20 is connected with the back plate 40 through a screw, and the connecting position is covered by the cover 50 with the recess 51. The seat lower welding piece 80 is connected with the seat plate 90 through a screw. The chair leg 100 is fixed at the bottom of the seat plate 90 and is used for supporting the whole chair structure. By adopting the chair frame structure, the chair provided by the embodiment solves the problem of exposed screws at the back connecting position through the design of the cover 50.

[0071] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, and anyone skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the utility model, and these modifications or replacements should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. A chair frame structure, characterized by, The chair frame structure comprises: a chair frame body, a backrest welding piece is arranged on the chair frame body, the backrest welding piece is used for connecting with a backrest plate through a screw, a cover is arranged outside the backrest welding piece, and a recess for accommodating a screw connection position of the backrest welding piece and the backrest plate is arranged on the inner side of the cover.

2. The chair frame structure according to claim 1, characterized in that, Further comprising: a buckle connection structure for detachably connecting the cover and the backrest welding piece.

3. The chair frame structure of claim 2, wherein, The buckle connection structure comprises: an elastic buckle arranged on the cover; and a clamping groove arranged on the backrest welding piece and matched with the elastic buckle.

4. The chair frame structure according to claim 3, characterized in that, The elastic buckle comprises: a connecting part fixedly connected with the cover; and a plurality of clamping parts formed by extending from the connecting part, and gaps are arranged between the clamping parts.

5. The chair frame structure of claim 1, wherein The cover comprises: a vertical part and a horizontal part connected with each other, the recess is arranged on the inner side of the vertical part, and the horizontal part is arranged below the backrest plate connected with the backrest welding piece.

6. The chair frame structure of claim 5, wherein, The outer surface of the vertical part is a first curved surface structure, and the connection position of the vertical part and the horizontal part is a second curved surface structure.

7. The chair frame structure of claim 1, wherein A gasket is arranged on the inner side of the backrest welding piece, and the gasket is used for filling the gap between the backrest welding piece and the backrest plate.

8. The chair frame structure according to any one of claims 1 to 7, characterized in that, Further comprising: a seat under welding piece arranged on the chair frame body, the seat under welding piece is used for connecting with a seat plate through a screw.

9. The chair frame structure of claim 8, wherein, The chair frame body is an integrally formed metal bending rod, the chair frame body has oppositely arranged top and bottom ends, the backrest welding piece is arranged on the top end of the chair frame body, and the seat under welding piece is arranged on the bottom end of the chair frame body.

10. A chair, characterized in that The chair frame structure comprises: the chair frame structure of any one of claims 1 to 9, a backrest plate is connected with the backrest welding piece of the chair frame structure through a screw, a seat plate is connected with the seat under welding piece of the chair frame structure through a screw, and a chair leg is connected with the seat plate.

Images