CN212489204U

CN212489204U - Foldable backrest chair framework

Info

Publication number: CN212489204U
Application number: CN202021219463.4U
Authority: CN
Inventors: 喻楼成
Original assignee: Anji Meiyuan Furniture Co ltd
Current assignee: Anji Meiyuan Furniture Co ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2021-02-09
Anticipated expiration: 2030-06-28

Abstract

The utility model relates to a foldable backrest chair framework, which comprises a chair frame, a fixed backrest frame arranged at the rear side of the chair frame, a pair of armrest frames arranged between the chair frame and the fixed backrest frame, and a turnover backrest frame hinged on the fixed backrest frame, wherein a fastener for limiting the turnover of the turnover backrest frame is arranged between the fixed backrest frame and the turnover backrest frame; the turnover backrest frame is lapped on the two armrest frames after being turned over, so that an accommodating space is built inside the backrest chair framework. The utility model discloses a set up upset back frame that can overturn to it is spacing around the upset of upset back frame to assist handrail frame and fastener realization, when taking into account vanning efficiency, has effectively saved the occupation space of back chair skeleton, and the transportation cost is saved in the transportation of the back chair skeleton vanning of being convenient for.

Description

Foldable backrest chair framework

Technical Field

The utility model belongs to the technical field of the technique of furniture and specifically relates to a collapsible back chair skeleton is related to.

Background

The chair is a daily furniture, a seat with a backrest and armrests. Existing home chairs typically consist of a back rest chair frame with a seat and a back, and a seat cushion that is wrapped with textile fabric and filled with internal padding.

The existing backrest chair framework is generally formed by welding steel or other rigid materials, is of an integral structure and cannot be detached or folded, and because the upper half part of the backrest is arranged in a protruding mode relative to the seat, the backrest chair framework is large in occupied space and large in packing amount during transportation, and is easy to collide during transportation, so that the backrest chair framework is damaged and inconvenient to pack and transport, the transportation cost of an enterprise is improved to a certain extent, and the backrest chair framework needs to be improved.

SUMMERY OF THE UTILITY MODEL

The to-be-solved problem of the utility model is to provide a collapsible back chair skeleton that can carry out folding to the back part of back chair skeleton to the aforesaid that exists among the prior art not enough, it has solved the inconvenient problem of current back chair skeleton transportation.

The above object of the present invention is achieved by the following technical solutions:

a foldable backrest chair framework comprises a chair frame, a fixed backrest frame arranged at the rear side of the chair frame, a pair of armrest frames arranged between the chair frame and the fixed backrest frame, and a turnover backrest frame hinged on the fixed backrest frame, wherein a fastener for limiting the turnover of the turnover backrest frame is arranged between the fixed backrest frame and the turnover backrest frame; the turnover backrest frame is lapped on the two armrest frames after being turned over, so that an accommodating space is built inside the backrest chair framework.

By adopting the technical scheme, during transportation, the unfolded turnover backrest frame can be turned over by unlocking the fastening piece, and then the turnover backrest frame is rotated, so that the turnover backrest frame is lapped on the armrest frame, and the turnover backrest frame is prevented from occupying a boxing space; at the moment, a containing space is encircled by the overturned backrest frame, the seat frame, the fixed frame and the pair of armrest frames, parts such as a seat cushion or chair legs and the like can be placed in the containing space, and the framework of the backrest chair is prevented from being damaged; in the process, the turnover backrest frame is arranged, and the armrest frame and the fasteners are used for limiting the turnover backrest frame before and after turnover, so that the occupied space of the backrest chair framework is effectively saved while the boxing efficiency is considered, the backrest chair framework is convenient to box and transport, and the transportation cost is saved.

The utility model discloses further set up to: fixed back frame is including being fixed in a pair of fixed pole setting and a plurality of on the seat frame arrange in connect the pole setting between the fixed pole setting, be fixed in fixed arc pole between the fixed pole setting, the upper end of connecting the pole setting is fixed in on the fixed arc pole.

Through adopting above-mentioned technical scheme, fixed back frame both will support user's back, and other back chair frameworks will compromise the pressure to it when vanning the transportation again, can satisfy the required intensity requirement of fixed back frame through the mode that fixed pole setting, connection pole setting and fixed arc pole are connected, prolong the life of back chair framework.

The utility model discloses further set up to: the turnover backrest frame comprises a pair of turnover vertical rods hinged to the fixed vertical rods respectively, turnover arc-shaped rods fixed between the turnover vertical rods, connecting arc-shaped rods arranged above the turnover arc-shaped rods, a plurality of supporting vertical rods fixed between the turnover arc-shaped rods and the connecting arc-shaped rods, and connecting cross bars fixed to the supporting vertical rods, wherein the connecting arc-shaped rods are in smooth transition connection with the upper ends of the turnover vertical rods.

Through adopting above-mentioned technical scheme, the user's back is supported to the upset back frame had, and other back chair frameworks are to its pressure when directly bearing vanning the transportation again, consequently regard as outside frame with connection arc pole and upset pole setting, and the rethread supports the pole setting as main stress point, and strengthen these joint strength who supports between the pole setting through upset arc pole and connection horizontal bar, can satisfy the required intensity requirement of upset back frame, prolong the life of back chair framework.

The utility model discloses further set up to: a fixed seat is arranged at the upper end of the fixed upright stanchion, a turnover seat is arranged at the lower end of the turnover upright stanchion, and a rotating shaft which is rotatably connected to the fixed seat is arranged on the turnover seat; after the turnover backrest frame is unfolded, the turnover seat is abutted against the top surface of the fixed seat.

By adopting the technical scheme, after the backrest frame is fixed relative to the turnover backrest frame and unfolded, the turnover seat is abutted against the fixed seat to share the pressure applied to the fastener, so that the connection strength between the turnover backrest frame and the fixed backrest frame is improved, and the service life of the backrest chair framework is prolonged.

The utility model discloses further set up to: the fastener comprises a positioning gasket arranged on the turnover arc-shaped rod, a positioning hole arranged on the positioning gasket, a threaded hole arranged on the fixed arc-shaped rod, and a locking bolt which penetrates through the positioning hole and is in threaded connection with the threaded hole.

Through adopting above-mentioned technical scheme, connect upset arc pole and fixed arc pole through locking bolt and locating washer to direct restriction upset back frame upset, and easy dismounting, the transportation and the installation of the back chair skeleton of being convenient for.

The utility model discloses further set up to: the seat frame is square annular, the handrail frame sets up to the style of calligraphy of falling L, handrail frame both ends are fixed in respectively on seat frame and the fixed back frame, just handrail frame with be provided with vertical handrail strengthening rib between the seat frame.

By adopting the technical scheme, the force borne by the armrest frame is shared by the armrest reinforcing ribs, so that the strength of the armrest frame and the connecting point between the seat frame and the fixed backrest frame is ensured, the backrest chair framework is prevented from being damaged, and the service life of the backrest chair framework is prolonged.

The utility model discloses further set up to: arc-shaped reinforcing rods are arranged between the front sides of the two armrest frames, the reinforcing rods are arranged in a protruding mode relative to the front side of the seat frame, and a plurality of seat reinforcing ribs are arranged between the reinforcing rods and the seat frame.

By adopting the technical scheme, the reinforcing rods are used for supporting the legs of the user close to the knee joints, and simultaneously, the contact surface between the backrest chair framework and the backrest chair framework below the backrest chair framework can be increased during transportation, so that the purpose of sharing the pressure of the seat frame is achieved, the backrest chair framework is prevented from being damaged, and the service life of the backrest chair framework is prolonged.

The utility model discloses further set up to: two pairs of mounting gaskets for connecting with the chair legs are arranged on the chair frame.

By adopting the technical scheme, the chair legs are convenient to mount.

To sum up, the utility model discloses a beneficial technological effect does: through setting up the upset back frame that can overturn to it is spacing around the upset of back frame is realized to assist handrail frame and fastener, when taking into account vanning efficiency, has effectively saved the occupation space of back chair skeleton, and the transportation of being convenient for back chair skeleton vanning saves the cost of transportation.

Drawings

Fig. 1 is a schematic structural view of the back rest chair framework of the present invention in an unfolded state.

Fig. 2 is a partial structural schematic view of the backrest chair framework of the present invention in the unfolded state.

Fig. 3 is a schematic structural view of two back rest chair frames stacked in a folded state.

In the figure, 1, a seat frame; 11. installing a gasket; 2. fixing the backrest frame; 21. fixing the vertical rod; 22. connecting the vertical rods;

23. fixing the arc-shaped rod; 3. a handrail frame; 31. handrail reinforcing ribs; 32. a reinforcing bar; 33. a seat stiffener; 4. turning over the backrest frame; 41. turning over the vertical rod; 42. turning over the arc-shaped rod; 43. connecting the arc-shaped rods; 44. supporting the upright stanchion; 45. connecting the transverse strips; 5. a rotating assembly; 51. a fixed seat; 52. a turning seat; 53. a rotating shaft; 6. a fastener; 61. positioning the gasket; 62. positioning holes; 63. a threaded hole; 64. and locking the bolt.

Detailed Description

In order to make the utility model realize that technical means, creation characteristics, achievement purpose and effect are clearer and easily understand, it is right to combine below the figure and the detailed implementation mode the utility model discloses do further explanation:

referring to fig. 1, for the utility model discloses a foldable backrest chair framework, including a chair frame 1, a fixed backrest frame 2 arranged on the chair frame 1, armrest frames 3 arranged on both sides of the fixed backrest frame 2, and a turnover backrest frame 4 arranged above the fixed backrest frame 2. A lockable rotating assembly 5 is arranged between the turnover backrest frame 4 and the fixed backrest frame 2, the rotating assembly 5 realizes the turnover of the turnover backrest frame 4 in a hinged mode and realizes the limit of the turnover backrest frame 4 in an unfolding state in a threaded connection mode. In addition, the turnover backrest frame 4 is lapped on the upper side surfaces of the two armrest frames 3 after being turned over, so that an accommodating space is built in the backrest chair framework, and parts such as seat cushions or chair legs can be placed in the accommodating space.

Specifically, the fixed backrest frame 2 comprises a pair of fixed upright posts 21 fixed on the seat frame 1, two connecting upright posts 22 arranged between the fixed upright posts 21, and a fixed arc-shaped rod 23 fixed between the fixed upright posts 21; wherein, the two fixed vertical rods 21 are oppositely and obliquely arranged outwards, and the upper ends of the connecting vertical rods 22 are fixed on the fixed arc-shaped rods 23. The fixed backrest frame 2 supports the waist and back of a user, pressure of other backrest chair frameworks to the backrest frame during boxing transportation is taken into consideration, the strength requirement required by the fixed backrest frame 2 can be met through the connection mode of the fixed upright rods 21, the connecting upright rods 22 and the fixed arc-shaped rods 23, and the service life of the backrest chair framework is prolonged.

The turnover backrest frame 4 comprises a pair of turnover upright rods 41 which are respectively coaxial with the two fixed upright rods 21, a turnover arc-shaped rod 42 fixed between the turnover upright rods 41, a connecting arc-shaped rod 43 arranged above the turnover arc-shaped rod 42, four supporting upright rods 44 fixed between the turnover arc-shaped rod 42 and the connecting arc-shaped rod 43, and connecting cross bars 45 fixed on the supporting upright rods 44; wherein, the upper ends of the connecting arc rod 43 and the turning vertical rod 41 are connected in a smooth transition way. The back frame 4 that overturns both will support the user's back, and other back chair skeletons will bear the pressure to it when directly containerizing the transportation again, consequently regard as the outside frame with connecting arc pole 43 and upset pole setting 41, and the rethread supports pole setting 44 as main stress point to strengthen these joint strength who supports between the pole setting 44 through upset arc pole 42 and connection horizontal bar 45, can satisfy the required intensity requirement of upset back frame 4, prolong the life of back chair skeleton.

In addition, the seat frame 1 is set to be a square ring shape similar to an isosceles trapezoid, and two pairs of mounting gaskets 11 used for being connected with the chair legs are arranged on the seat frame 1. The armrest frame 3 is arranged in an inverted L shape, and two ends of the armrest frame 3 are respectively fixed at the front folding angle of the seat frame 1 and on the fixed upright stanchion 21. Meanwhile, vertical armrest reinforcing ribs 31 are arranged between the armrest frame 3 and the seat frame 1, an arc-shaped reinforcing rod 32 is arranged between the front sides of the two armrest frames 3, the reinforcing rod 32 is arranged in a protruding manner relative to the front side of the seat frame 1, and two seat reinforcing ribs 33 are arranged between the reinforcing rod 32 and the seat frame 1. Utilize handrail strengthening rib 31 to share the power that handrail frame 3 received to guarantee the intensity of handrail frame 3 and the tie point between seat frame 1 and the fixed back frame 2, simultaneously, stiffener 32 is used for supporting the shank that the user is close to the knee joint, simultaneously when the transportation, also can increase the contact surface of back chair skeleton and below back chair skeleton, and then reach the purpose of sharing seat frame 1 pressure, avoid back chair skeleton impaired, prolong the life of back chair skeleton.

Referring to fig. 2, the rotating assembly 5 includes a U-shaped fixing base 51 disposed at the upper end of the fixing upright 21, a U-shaped tilting base 52 disposed at the lower end of the tilting upright 41, and a rotating shaft 53 disposed at the lower end of the tilting base 52 and rotatably connected to the fixing base 51. When the backrest frame 4 is unfolded relative to the fixed backrest frame 2, the overturning seat 52 abuts against the top surface of the fixed seat 51 to share the pressure applied to the fastening piece 6, so that the connection strength between the overturning backrest frame 4 and the fixed backrest frame 2 is improved, and the service life of the backrest chair framework is prolonged.

In addition, the fastening member 6 includes a positioning spacer 61 provided on the turning arc-shaped rod, a positioning hole 62 provided on the positioning spacer 61, a threaded hole 63 provided on the fixing arc-shaped rod, and a locking bolt 64 inserted through the positioning hole 62 and threadedly coupled with the threaded hole 63. The turnover arc-shaped rod and the fixed arc-shaped rod are connected through the locking bolt 64 and the positioning gasket 61, so that the turnover of the turnover backrest frame is directly limited, the backrest frame is convenient to disassemble and assemble, and the locking bolt 64 can be connected in the threaded hole 63 in a threaded manner and is prevented from being lost when the backrest chair framework is in a folded state, so that the backrest chair framework is convenient to transport and install.

Referring to fig. 3, the implementation principle of this embodiment is: during transportation, the locking bolt 64 is rotated so that the locking bolt 64 is disengaged from the positioning hole 62 and the threaded hole 63, and the locking bolt 64 is screwed into the threaded hole 63. Then the backrest frame 4 is turned over and lapped on the two armrest frames 3; at this time, a containing space is defined by the overturned backrest frame 4, the seat frame 1, the fixed frame and the pair of armrest frames 3, and parts such as seat cushions or chair legs can be placed in the containing space. And then, folding other back-rest chair frameworks according to the method, and stacking the back-rest chair frameworks in sequence. During stacking, the rear side of the seat frame 1 of the upper backrest chair framework moves and abuts against the bottom surface of the positioning gasket 61 of the lower backrest chair framework, and the seat frame 1 and the reinforcing rod 32 of the upper backrest chair framework are lapped on the overturning backrest frame 4 of the lower backrest chair framework. When the stack is disassembled, the backrest chair framework is moved backwards and taken down, the backrest frame 4 is unfolded and turned over, the locking bolt 64 is taken out from the positioning hole 62 in a rotating mode, and the locking bolt 64 penetrates through the positioning hole 62 and is in threaded connection with the threaded hole 63.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. A collapsible back chair framework which characterized in that: the backrest folding chair comprises a chair frame (1), a fixed backrest frame (2) arranged at the rear side of the chair frame (1), a pair of armrest frames (3) arranged between the chair frame (1) and the fixed backrest frame (2), and a turnover backrest frame (4) hinged on the fixed backrest frame (2), wherein a fastener (6) for limiting the turnover of the turnover backrest frame (4) is arranged between the fixed backrest frame (2) and the turnover backrest frame (4); the turnover backrest frame (4) is lapped on the two armrest frames (3) after being turned over, so that an accommodating space is built inside the backrest chair framework.

2. A foldable back rest chair frame according to claim 1, characterized in that: fixed back frame (2) including being fixed in a pair of fixed pole setting (21) and a plurality of on seat frame (1) arrange in connect pole setting (22) between fixed pole setting (21), be fixed in fixed arc pole (23) between fixed pole setting (21), the upper end of connecting pole setting (22) is fixed in on the fixed arc pole (23).

3. A foldable back rest chair frame according to claim 2, characterized in that: the turnover backrest frame (4) comprises a pair of turnover upright rods (41) hinged to the fixed upright rods (21) respectively, turnover arc-shaped rods (42) fixed between the turnover upright rods (41), connecting arc-shaped rods (43) arranged above the turnover arc-shaped rods (42), a plurality of supporting upright rods (44) fixed between the turnover arc-shaped rods (42) and the connecting arc-shaped rods (43), and connecting cross bars (45) fixed on the supporting upright rods (44), wherein the upper ends of the connecting arc-shaped rods (43) and the turnover upright rods (41) are in smooth transition connection.

4. A foldable back rest chair frame according to claim 3, characterized in that: a fixed seat (51) is arranged at the upper end of the fixed upright rod (21), a turning seat (52) is arranged at the lower end of the turning upright rod (41), and a rotating shaft (53) which is rotatably connected to the fixed seat (51) is arranged on the turning seat (52); after the turnover backrest frame (4) is unfolded, the turnover seat (52) is abutted against the top surface of the fixed seat (51).

5. The foldable back rest chair framework according to claim 4, wherein: the fastener (6) comprises a positioning gasket (61) arranged on the turnover arc-shaped rod (42), a positioning hole (62) formed in the positioning gasket (61), a threaded hole (63) formed in the fixed arc-shaped rod (23), and a locking bolt (64) penetrating through the positioning hole (62) and in threaded connection with the threaded hole (63).

6. A foldable back rest chair frame according to claim 1, characterized in that: seat frame (1) sets up to square ring shape, handrail frame (3) set up to the style of calligraphy of falling L, handrail frame (3) both ends are fixed in respectively on seat frame (1) and the fixed back frame (2), just handrail frame (3) with be provided with vertical handrail strengthening rib (31) between seat frame (1).

7. The foldable back rest chair framework of claim 6, wherein: two be provided with curved stiffener (32) between the front side of handrail frame (3), stiffener (32) are relative seat frame (1) front side protrusion sets up, just stiffener (32) with be provided with a plurality of seat strengthening rib (33) between seat frame (1).

8. A foldable back rest chair frame according to claim 1, characterized in that: two pairs of mounting gaskets (11) used for being connected with the chair legs are arranged on the chair frame (1).