CN217987110U

CN217987110U - Chair capable of compressing boxing space

Info

Publication number: CN217987110U
Application number: CN202222190214.2U
Authority: CN
Inventors: 张朱军
Original assignee: Saidong Anji Furniture Co ltd
Current assignee: Saidong Anji Furniture Co ltd
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2022-12-09
Anticipated expiration: 2032-08-19

Abstract

The utility model discloses a chair capable of compressing the packing space, which comprises a chair seat and a chair back; the chair back comprises a chair back frame and a surface layer wrapped outside the chair back frame; the chair back frame sequentially comprises an upper frame, a middle frame and a lower frame from top to bottom; the upper frame and the middle frame are rotatably connected, the middle frame and the lower frame are rotatably connected, and the rotating range of the two rotating connections is limited, so that the chair back can be converted from an extending state suitable for leaning of a human body to a folding state in which the upper frame is positioned in front of the lower frame. The beneficial effects of the utility model reside in that, can reduce the damage of the back of the chair outer surface layer that leads to by the crease after folding.

Description

Chair capable of compressing boxing space

Technical Field

The utility model relates to a chair, in particular to a chair capable of compressing a packing space.

Background

At present, for chair manufacturers, the cost of the chair includes the production cost and the logistics transportation cost, especially for exported products, the logistics transportation cost is high, and in order to compress the part of the cost, the chair can be designed into a foldable structure, and the boxing space of the chair can be compressed through folding, so that the purpose of reducing the logistics transportation cost is achieved.

For example, patent application publication No. CN2543420 discloses a chair with a foldable backrest, which comprises a backrest, a backrest folding part, hinges connecting the backrest and the backrest folding part, and a folding support device, wherein the backrest folding part and the backrest are connected by the hinges, so that the backrest folding part can be turned to a position horizontal to the backrest, and the folding support device can support the backrest folding part.

If the patent application of publication number CN202842955U discloses a collapsible back of chair structure again, including back of the chair body and folding portion, the upper portion at the back of the chair body is installed to folding portion is articulated with the rear side position of back of the chair body, it is protruding to be equipped with a horizontal arc in the folding portion, the rear portion of folding portion and back of the chair body is equipped with the relative first magnetic path of polarity respectively, and the butt joint position of folding portion and back of the chair body is equipped with the relative second magnetic path of polarity respectively. The first magnetic block can enable the folded part and the chair back body to be automatically attracted and connected through magnetism; the second magnetic block can make the extended folding part and the chair back body automatically attracted and connected by magnetism.

In the chair in the prior art, the chair back can be folded, however, the crease mark generated after the chair back is folded is deep, and the damage conditions such as cracking of the outer surface layer of the chair back at the crease position are very easy to cause.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a chair that can compress vanning space can reduce the damage of the back of the chair outer surface layer that leads to by the crease after folding.

The utility model discloses a realize through following technical scheme.

A chair capable of compressing a packing space comprises a chair seat and a chair back; the chair back comprises a chair back frame and a surface layer wrapped outside the chair back frame; the chair back frame sequentially comprises an upper frame, a middle frame and a lower frame from top to bottom; the upper frame and the middle frame are rotatably connected, the middle frame and the lower frame are rotatably connected, and the rotating range of the two rotating connections is limited, so that the chair back can be converted from an extending state suitable for leaning of a human body to a folding state in which the upper frame is positioned in front of the lower frame.

As a further improvement of the utility model, the top and the bottom of the middle part frame left and right sides all are equipped with first cooperation structure, the bottom of the upper portion frame left and right sides, the top of the lower part frame left and right sides are equipped with second cooperation structure respectively, and corresponding first cooperation structure and second cooperation structure rotate to be connected.

As a further improvement of the present invention, the first fitting structure is provided with an adjusting groove extending in an arc, locking holes are provided at both ends of the adjusting groove, and the diameter of each locking hole is larger than the width of the adjusting groove; the second matching structure is provided with an adjusting rod, a rod body of the adjusting rod is provided with an adjusting part and a locking part which are respectively matched with the adjusting groove and the locking hole, the adjusting rod can move along the axial direction of the adjusting rod, so that the adjusting part is inserted into the adjusting groove or the locking hole, and the locking part is inserted into the locking hole; when the locking parts are respectively inserted into two different locking holes, the chair back frame is respectively in an extension state and a compression state; when the upper frame and the middle frame, and the middle frame and the lower frame rotate relatively, the adjusting part slides along the adjusting groove; the adjusting rod is provided with an elastic resetting piece, the elastic resetting piece is used for enabling the adjusting rod to move along the axial direction of the adjusting rod to reset, and the locking portion is inserted into the locking hole.

As a further improvement of the present invention, the first fitting structure comprises a first outer side plate and a first inner side plate which are arranged at intervals left and right, and a rotating shaft which extends left and right and is connected with the first outer side plate and the first inner side plate at two ends respectively; the surface of the rotating shaft is provided with positioning grooves which are circumferentially surrounded at the positions close to the first outer side plate and the first inner side plate; second cooperation structure is including controlling second curb plate and the second interior plate that the interval set up, and second curb plate and second interior plate are blocked respectively in the constant head tank that corresponds to all be equipped with the through-hole that allows the pivot to pass and make both can revolute the rotation of axes.

As a further improvement of the present invention, the adjusting groove is disposed on the first outer side plate; the adjusting rod comprises a fixed shaft and an adjusting sleeve sleeved outside the fixed shaft, one end of the fixed shaft is fixedly connected to the second inner side plate, the second outer side plate is provided with a through hole allowing the adjusting sleeve to penetrate through, and the adjusting portion and the locking portion are both arranged on the adjusting sleeve.

As a further improvement of the present invention, the elastic restoring member is sleeved outside the fixed shaft, one end of the elastic restoring member is supported on the second inner side plate, and the other end of the elastic restoring member is supported on the end portion of the adjusting sleeve.

As a further improvement of the present invention, the first fitting structure further includes a first middle plate connecting the first outer side plate and the first inner side plate, and the second fitting structure further includes a second middle plate connecting the second outer side plate and the second inner side plate; when the chair back frame is in an extending state, the second middle plate part is abutted against the first middle plate.

As a further improvement of the present invention, the end portions of the second outer side plate and the second inner side plate are both provided with a supporting portion; when the chair back frame is in a folded state, the supporting part is supported on the first middle plate.

As a further improvement of the utility model, the middle frame is positioned at the upper half part of the chair back frame, and the chair back is in a folded state and the length of the chair seat is close.

As a further improvement of the utility model, the middle frame is positioned in the middle of the chair back frame.

The utility model has the advantages that:

the utility model discloses a divide into upper portion frame, middle part frame, the lower part frame that the rotation is connected with the back of the chair frame, form twice crease after the back of the chair frame is folded to the angle of buckling of these twice creases reduces substantially, in order to play the effect that damages such as splitting appear in the protection surface course.

Drawings

The preferred embodiments of the present invention will hereinafter be described in detail to facilitate an understanding of the objects and advantages of the invention, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic structural diagram of a chair according to embodiment 1;

FIG. 2 is a schematic structural diagram of a first mating structure and a second mating structure of embodiment 1;

FIG. 3 is an exploded view of the first and second mating structures of embodiment 1;

fig. 4 is a schematic structural diagram of a chair according to embodiment 2.

Detailed Description

The invention is explained in more detail below with reference to the drawings and exemplary embodiments.

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like as referred to or as may be referred to in this specification are defined with respect to the configuration shown in the drawings, and the terms "inner" and "outer" refer to directions toward and away from the geometric center of a particular component and are relative terms, and thus may be changed accordingly depending on the position and the state of use of the particular component. Therefore, these and other directional terms should not be construed as limiting terms.

Referring to fig. 1 to 3, a chair capable of compressing a packing space includes a seat 2 and a back, wherein the back includes a back frame 1 and a cover (not shown) covering the back frame 1. Back of chair frame 1 is from top to bottom including upper portion frame 11, middle part frame 12 and lower part frame 13 in proper order, upper portion frame 11 rotates with middle part frame 12 to be connected, middle part frame 12 rotates with lower part frame 13 to be connected. When the chair is used, namely the chair is suitable for leaning of a human body, the chair back is in an extension state, namely the upper frame 11, the middle frame 12 and the lower frame 13 are in a flat connection state. The range of the pairs of pivotal connections of the upper frame 11 and the middle frame 12, and the middle frame 12 and the lower frame 13 is limited, the upper frame 11 can only be pivoted forward relative to the middle frame 12 when the upper frame 11 and the middle frame 12 are flat, and the middle frame 12 can only be pivoted forward relative to the lower frame 13 when the middle frame 12 and the lower frame 13 are flat, so that the chair back can be pivoted from an extended state suitable for a person to lean against to a folded state in which the upper frame 11 is located in front of the lower frame 13.

The logistics transportation cost of a chair is largely determined by the packing space, and the chair can be disassembled or folded to compress the space occupied by the chair, and for the embodiment, the chair back is folded to compress the packing space. However, the folding of the chair back not only needs to consider the space compression amount after folding, but also needs to consider the influence of folding on the surface layer wrapped outside the chair back frame 1, because the folding of the chair back can form a crease on the surface layer, the depth of the crease not only can influence the beauty of the surface layer, but also for the surface layer made of leather materials, the deeper crease can easily cause damage phenomena such as cracking of the surface layer.

In the embodiment, the backrest frame 1 is respectively of a three-section structure including an upper frame 11, a middle frame 12 and a lower frame 13, and the backrest is folded and compressed in a manner that the upper frame 11 is turned forwards relative to the middle frame 12 and the middle frame 12 is turned forwards relative to the lower frame 13, so that the bending angles of the upper frame 11 relative to the middle frame 12 and the middle frame 12 relative to the lower frame 13 are greatly reduced, theoretically, the bending angles of the two bending angles are about 90 degrees, the surface layer forms two creases at the joints of the upper frame 11 and the middle frame 12, the middle frame 12 and the lower frame 13, and the two creases are relatively shallow due to the substantial reduction of the bending angles, so that the damage conditions such as cracking of the surface layer are protected.

The top and the bottom of the 12 left and right sides of middle part frame all are equipped with first cooperation structure 3, the bottom of the 11 left and right sides of upper portion frame, the top of the 13 left and right sides of lower part frame are equipped with second cooperation structure 4 respectively, and corresponding first cooperation structure 3 rotates with second cooperation structure 4 and connects, is about to upper portion frame 11, middle part frame 12, the rotation tie point setting of 13 three of lower part frame in the left and right sides, and structural bilateral symmetry nature not only can make more steady when folding, but also structural stability when the back of the chair is in the state of extending is better.

For the rotating connection relationship between the first matching structure 3 and the second matching structure 4, the first matching structure 3 is provided with an adjusting groove 51 extending in an arc, two ends of the adjusting groove 51 are provided with locking holes 52, and the caliber of each locking hole 52 is larger than the width of the adjusting groove 51. The locking hole 52 may be of circular configuration, but may also be of other configurations such as oval or other irregular shapes. The second matching structure 4 is provided with an adjusting rod 6, and the rod body of the adjusting rod 6 is respectively provided with an adjusting part 61 and a locking part 62 which are matched with the adjusting groove 51 and the locking hole 52, wherein the matching means that the cross-sectional shapes of the adjusting part 61 and the locking part 62 are matched with the shapes of the adjusting groove 51 and the locking hole 52. The adjustment rod 6 can move along the axial direction thereof, so that the adjustment portion 61 is inserted into the adjustment groove 51 or the locking hole 52, the locking portion 62 is inserted into the locking hole 52, and the backrest frame 1 is respectively in an extended state and a compressed state when the locking portion 62 is respectively inserted into two different locking holes 52, that is, the two locking holes 52 are respectively located in the extended state and the compressed state of the backrest frame 1. When the locking part 62 is inserted into the locking hole 52, since the width of the adjusting groove 51 is larger than the diameter of the locking hole 52, the locking part 62 is limited in the locking hole 52 and cannot slide into the adjusting groove 51 from the locking hole 52, so that the upper frame 11, the middle frame 12 and the lower frame 13 are locked when the backrest frame 1 is in a compressed state, and the structural form of the backrest is maintained when the backrest is used and is transported in logistics. When the upper frame 11 and the middle frame 12, and the middle frame 12 and the lower frame 13 rotate relatively, the adjusting part 61 slides along the adjusting groove 51 to maintain the fluency of the folding process of the chair back. The adjusting rod 6 is provided with an elastic resetting piece 63, the elastic resetting piece 63 is used for moving and resetting the adjusting rod 6 along the axial direction of the adjusting rod, the locking part 62 is inserted into the locking hole 52, and the elastic resetting piece 63 can enable the chair back to be converted into a folding state from an extending state or rapidly complete the locking of the upper frame 11, the middle frame 12 and the lower frame 13 after the chair back is converted into the extending state from the folding state.

Specifically, the first fitting structure 3 includes a first outer plate 31 and a first inner plate 32 which are arranged at a left-right interval, and a rotating shaft 34 which extends left and right and has two ends connected to the first outer plate 31 and the first inner plate 32, respectively. The surface of the rotating shaft 34 is provided with circumferentially surrounding positioning grooves 341 at positions close to the first outer side plate 31 and the first inner side plate 32. The second matching structure 4 includes a second outer plate 41 and a second inner plate 42 which are arranged at left and right intervals, the second outer plate 41 and the second inner plate 42 are respectively clamped in the corresponding positioning slots 341, and both are provided with through holes for allowing the rotating shaft 34 to pass through, so that the two can rotate around the rotating shaft 34. The joint cooperation of second outside board 41 and second inside board 42 and constant head tank 341 can improve the stability that first cooperation structure 3 and second cooperation structure 4 rotate to be connected, avoids taking place between the two the circumstances of relative skew or dislocation about to improve the overall structure stability of back of the chair frame 1.

More specifically, the adjusting groove 51 is disposed on the first outer side plate 31, the adjusting rod 6 includes a fixing shaft 6-1 and an adjusting sleeve 6-2 sleeved outside the fixing shaft 6-1, one end of the fixing shaft 6-1 is fixedly connected to the second inner side plate 42, the second outer side plate 41 is provided with a through hole for allowing the adjusting sleeve 6-2 to pass through, and the adjusting portion 61 and the locking portion 62 are both disposed on the adjusting sleeve 6-2. Through the telescopic structure formed by the fixed shaft 6-1 and the adjusting sleeve 6-2, on one hand, the adjusting part 61 and the locking part 62 can realize the movement adjustment along the axial direction, and on the other hand, one end of the fixed shaft 6-1 is positioned on the second inner side plate 42 in a fixed connection mode, so that the axial direction can not deviate when the axial movement of the adjusting rod 6 is adjusted, and the condition that the adjusting rod 6 and the adjusting groove 51 are clamped is avoided.

The elastic reset piece 63 is sleeved outside the fixed shaft 6-1, one end of the elastic reset piece is supported on the second inner side plate 42, and the other end of the elastic reset piece is supported on the end part of the adjusting sleeve 6-2. In addition, since the surface layer is wrapped outside the seat back frame 1, it is not beneficial to perform axial adjustment on the adjusting rod 6, in this embodiment, the adjusting slot 51 is disposed on the first outer side plate 31, so that the outer ends of the adjusting sleeves 6-2 are located on the left and right sides of the seat back frame 1, and a user can press the adjusting sleeves 6-2 to push inwards in a state of sandwiching the surface layer, thereby performing extension or bending of the seat back frame 1. The outer end of the adjusting sleeve 6-2 is also provided with a button structure 6-3, so that the operation of a user is facilitated.

Further, the first matching structure 3 further comprises a first middle plate 33 connecting the first outer side plate 31 and the first inner side plate 32, the second matching structure further comprises a second middle plate 43 connecting the second outer side plate 41 and the second inner side plate 42, the first matching structure 3 and the second matching structure 4 are both in a C-shaped steel structure, and when the seat back frame 1 is in the extending state, the second middle plate 43 partially abuts against the first middle plate 33. When the locking part 62 is clamped in the locking hole 52, the first matching mechanism and the second matching mechanism can share the stress load of the locking part 62 and the locking hole 52 through the mutual abutting structural relationship of the first middle plate 33 and the second middle plate 43, the rigidity of the chair back for supporting a human body in an extending state is improved, and the situation that the chair back frame 1 is bent backwards and deformed is avoided.

The ends of the second outer side plate 41 and the second inner side plate 42 are both provided with a support portion 44, when the seat back frame 1 is in a folded state, the support portion 44 is supported on the first middle plate 33, so that the seat back frame 1 is firmer in the folded state, and can also play a role in load sharing. In addition, the end edges of the second inner side plate 42 and the second outer side plate 41 need to be provided with arc structures or be provided with notches, so as to avoid the phenomenon of interference and collision when the first matching structure 3 and the second matching structure 4 rotate relatively.

In this embodiment, the middle frame 12 is located at the upper half of the backrest frame 1, and the length of the backrest is close to that of the seat 2 when the backrest is folded, so that the chair of this embodiment is suitable for the type in which the backrest and the seat 2 can be folded, and can be further folded to compress the packing space.

Example 2:

referring to fig. 4, in the present embodiment, the same as embodiment 1 is applied except that the middle frame 12 is located at a different position on the seatback frame 1. In this embodiment, the middle frame 12 is located at the middle of the back frame 1, so that the degree of compression of the back frame 1 after folding can be maximized.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical scheme described in each embodiment can be modified or the technical characteristics of the frame can be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A chair capable of compressing a packing space comprises a chair seat and a chair back; the chair back comprises a chair back frame and a surface layer wrapped outside the chair back frame; the chair back frame is characterized by comprising an upper frame, a middle frame and a lower frame from top to bottom in sequence; the upper frame and the middle frame are rotatably connected, the middle frame and the lower frame are rotatably connected, and the rotating range of the two rotating connections is limited, so that the chair back can be converted from an extending state suitable for leaning of a human body to a folding state in which the upper frame is positioned in front of the lower frame.

2. The chair capable of compressing the packing space as claimed in claim 1, wherein the top and bottom ends of the left and right sides of the middle frame are provided with first engaging structures, the bottom ends of the left and right sides of the upper frame and the top ends of the left and right sides of the lower frame are provided with second engaging structures, respectively, and the corresponding first engaging structures and the second engaging structures are rotatably connected.

3. A chair capable of compressing a packing space according to claim 2, wherein the first engaging structure is provided with an adjusting groove extending in an arc, and locking holes are provided at both ends of the adjusting groove, and the diameter of the locking hole is larger than the width of the adjusting groove; the second matching structure is provided with an adjusting rod, a rod body of the adjusting rod is provided with an adjusting part and a locking part which are respectively matched with the adjusting groove and the locking hole, the adjusting rod can move along the axial direction of the adjusting rod, so that the adjusting part is inserted into the adjusting groove or the locking hole, and the locking part is inserted into the locking hole; when the locking parts are respectively inserted into two different locking holes, the chair back frame is respectively in an extension state and a compression state; when the upper frame and the middle frame, and the middle frame and the lower frame rotate relatively, the adjusting part slides along the adjusting groove; the adjusting rod is provided with an elastic resetting piece, the elastic resetting piece is used for enabling the adjusting rod to move along the axial direction of the adjusting rod to reset, and the locking portion is inserted into the locking hole.

4. The chair capable of compressing the packing space as claimed in claim 3, wherein the first engaging structure comprises a first outer side plate and a first inner side plate spaced apart from each other in a left-right direction, and a shaft extending in the left-right direction and having both ends connected to the first outer side plate and the first inner side plate, respectively; the surface of the rotating shaft is provided with positioning grooves which are circumferentially surrounded at the positions close to the first outer side plate and the first inner side plate; second cooperation structure is including controlling second curb plate and the second interior plate that the interval set up, and second curb plate and second interior plate are blocked respectively in the constant head tank that corresponds to all be equipped with the through-hole that allows the pivot to pass and make both can revolute the rotation of axes.

5. The chair capable of compressing a packing space according to claim 4, wherein the adjustment groove is provided on the first outer side plate; the adjusting rod comprises a fixed shaft and an adjusting sleeve sleeved outside the fixed shaft, one end of the fixed shaft is fixedly connected to the second inner side plate, the second outer side plate is provided with a through hole allowing the adjusting sleeve to penetrate through, and the adjusting portion and the locking portion are both arranged on the adjusting sleeve.

6. A chair capable of compressing a packing space according to claim 5, wherein said elastic restoring member is fitted over the fixed shaft and supported at one end thereof on the second inner side plate and at the other end thereof on an end of the adjustment sleeve.

7. The chair capable of compressing the package space of claim 4, wherein the first mating structure further comprises a first middle panel connecting the first outer side panel and the first inner side panel, and the second mating structure further comprises a second middle panel connecting the second outer side panel and the second inner side panel; when the chair back frame is in an extending state, the second middle plate part is abutted against the first middle plate.

8. A chair capable of compressing a packing space according to claim 7, wherein the ends of the second outer side plate and the second inner side plate are provided with a support portion; when the chair back frame is in a folded state, the supporting part is supported on the first middle plate.

9. A chair capable of compressing packing space according to any one of claims 1 to 8, wherein said middle frame is located at the upper half of said back frame and said back frame is approximately as long as said seat when folded.

10. A chair capable of compressing a packing space according to any one of claims 1 to 8, wherein the middle frame is located at a middle portion of the back frame.