CN215226122U - Chair and chair frame thereof - Google Patents

Abstract

The utility model discloses a chair and a chair frame thereof, which comprises a chair back frame, a chair seat frame and a left handrail frame and a right handrail frame; comprises a chair back frame, a chair seat frame and a left handrail frame and a right handrail frame; the chair back frame comprises a backrest section and a support section which are integrally formed or fixedly connected, the support section is positioned below the backrest section, one end of the armrest frame is fixedly arranged on the side surface of the chair seat frame through a fastener, and the other end of the armrest frame is hinged with the chair back frame at the joint of the backrest section and the support section through a rotating shaft; the supporting section is detachably connected with the chair seat frame through a connecting component; so that the seat back frame can be folded on the seat frame; according to the technical scheme, the chair back frame is folded on the chair seat frame, so that the occupied space of the chair frame is reduced, and the boxing amount of the chair frame is increased.

Description

Chair and chair frame thereof

Technical Field

The utility model relates to the technical field of furniture, especially, relate to a chair and chair frame thereof.

Background

The strake is generally installed to the chair frame both sides, and the strake mainly plays the effect of decorating and protecting the chair frame side, and present strake generally adopts glue to bond in the side of seatpad and cushion, and this mounting means is fixed insecure, and glue has pungent smell moreover, and the harm is healthy, because the difficult location of both sides strake causes the strake asymmetry of both sides, influences the aesthetic property of chair frame.

Therefore, chinese patent document with publication number CN206576605U discloses a swivel chair strake subassembly, including back of the chair support and seat support, the junction both sides of back of the chair support and seat support are fixed with the connection piece of crescent, the connection piece outside is fixed with strake one and strake two, strake one with strake two is shell structure, strake one with behind the tip joggle of strake two with the connection piece spiro union, strake one with the non-joggle end medial surface of strake two all is fixed with the spacer, the beneficial effects of the utility model reside in that: the positioning swivel chair edge strip is convenient and accurate, reliable in fixation, convenient to install and elegant in appearance.

And chinese patent publication No. CN211722471U discloses a chair frame, comprising a back frame, a chair seat frame, a left and a right side edge strip assemblies and a left and a right armrest frames, wherein the edge strip assemblies comprise an edge strip i and an edge strip ii, the edge strip i and the edge strip ii are both mounted on the side surface of the chair frame and connected, and the armrest frames are fixed on the chair frame through a first bolt and a rotating shaft; the chair back frame comprises a backrest section and a support section which are integrally formed or fixedly connected, the support section is positioned below the backrest section and is connected with the chair seat frame, and the joint of the first edge strip and the second edge strip is close to the junction of the backrest section and the support section; the first edge strip is preliminarily installed on the chair back frame through a plurality of first buckling pieces; the second edge strip is installed on the chair seat frame through a plurality of second buckling pieces; the lower end of the first edge strip is in limit fit with the upper end of the second edge strip; the first bolt and the rotating shaft penetrate through the second edge strip and fix the second edge strip on the chair seat frame and the side surface of the chair back frame; through the technical scheme, the assembling steps are reduced, the assembling efficiency is improved, and the fixing is reliable and the appearance is attractive and elegant.

However, in the process of using the chair frame, a person skilled in the art finds that the first side strip and the second side strip in the chair frame are both plastic parts, that is, the first side strip and the second side strip cannot be used as main stress parts, so that the chair back frame and the chair seat frame are designed to be fixedly connected or integrally formed, and the packing amount of the chair frame is further influenced.

Disclosure of Invention

In order to solve the technical problem, the utility model aims at providing a chair and chair frame thereof, the back of the chair frame in this chair frame passes through bolt and chair seat frame fixed connection, and then makes when extracting the bolt, the back of the chair frame is collapsible on the chair seat frame to improve the vanning volume of this type of chair frame.

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

a chair frame comprises a chair back frame, a chair seat frame and a left handrail frame and a right handrail frame; the chair back frame comprises a backrest section and a support section which are integrally formed or fixedly connected, the support section is positioned below the backrest section, one end of the armrest frame is fixedly arranged on the side surface of the chair seat frame through a fastener, and the other end of the armrest frame is hinged with the chair back frame at the joint of the backrest section and the support section through a rotating shaft; the supporting section is detachably connected with the chair seat frame through a connecting component; so that the seat back frame can be folded on the seat frame.

Preferably, coupling assembling includes first connecting piece, second connecting piece and stay cord, first connecting piece and seat frame fixed connection, second connecting piece and back of the chair frame fixed connection and lie in the inboard of first connecting piece, the left and right sides of first connecting piece is equipped with a bolt hole respectively, both ends are connected with a spring bolt respectively about the stay cord, and two spring bolts are installed respectively on the left and right sides of second connecting piece to can stretch into two bolt holes respectively and fix the back of the chair frame.

Preferably, the first connecting piece comprises a left first connecting plate and a right first connecting plate, and the two first connecting plates are respectively welded and fixed with the left inner side wall and the right inner side wall of the chair seat frame; the two bolt holes are respectively positioned on the two first connecting plates,

the second connecting piece comprises a left second connecting plate and a right second connecting plate, the two second connecting plates are respectively welded and fixed with the left inner side wall and the right inner side wall of the chair back frame, and the two spring bolts are respectively installed on the two second connecting plates.

Preferably, the first connecting piece further comprises a first connecting rod, the left end and the right end of the first connecting rod are respectively welded and fixed with the two first connecting plates,

the second connecting piece further comprises a second connecting rod, and the left end and the right end of the second connecting rod are respectively welded and fixed with the two second connecting plates.

Preferably, the two first connecting plates respectively extend outwards to form first extending portions, and the first extending portions are used for preventing the chair back frame from rotating towards the direction in which the included angle between the chair back frame and the chair seat frame is increased.

Preferably, the connecting device is further provided with a connecting seat and a rope buckle, the connecting seat comprises two parallel third connecting plates and a fourth connecting plate used for connecting the two third connecting plates, the two third connecting plates are respectively provided with first through holes with the same axle center, the fourth connecting plate is provided with a second through hole, the pull rope penetrates through the two first through holes, and the rope buckle part extends into the second through hole and is connected with the pull rope.

Preferably, the chair back frame comprises a backrest section and a support section which are integrally formed or fixedly connected, the support section is positioned below the backrest section, the second connecting piece is fixedly arranged at the bottom of the support section,

the left edge strip assembly and the right edge strip assembly are further arranged, the edge strip assembly comprises an edge strip I and an edge strip II, and the edge strip I is positioned above the edge strip II and is of a shell structure; the first edge strip and the second edge strip are both arranged on the side face of the chair frame, and the joint of the first edge strip and the second edge strip is close to the joint of the backrest section and the support section;

one end of the armrest frame is fixedly arranged on the side surface of the chair seat frame through a first bolt, and the other end of the armrest frame is hinged with the chair back frame at the joint of the backrest section and the support section through a rotating shaft;

the inner surface of the first edge strip is fixedly connected with or integrally formed with a plurality of first buckling pieces, the first buckling pieces are installed on the chair back frame through third bolts, clamping grooves are formed in the first buckling pieces, the clamping grooves are in clearance fit with the third bolts, the opening direction of at least one clamping groove of one first buckling piece faces downwards, and the opening direction of at least one clamping groove of one first buckling piece faces upwards;

a plurality of second buckling pieces are fixedly connected to the inner surface of the second edge strip or integrally formed, and the second buckling pieces are installed on the chair seat frame through third bolts;

the lower end of the first edge strip is in limit fit with the upper end of the second edge strip;

and the first bolt and the rotating shaft penetrate through the mounting hole on the second edge strip and fix the second edge strip on the chair seat frame and the side surface of the supporting section.

Preferably, the second edge strip comprises a first section and a second section, the first section is attached to the chair seat frame, the second section is attached to the supporting section, a first mounting hole is formed in the middle of the first section, a second mounting hole is formed in the position, close to the outer end of the second section, of the first section, the first bolt penetrates through the first mounting hole, and the rotating shaft penetrates through the second mounting hole.

Preferably, an upward convex connecting part is further arranged at one end of the first edge strip connected with the first edge strip, and a notch is further arranged at one end of the first edge strip connected with the second edge strip, or; one end of the first edge strip connected with the second edge strip is also provided with a connecting part protruding downwards, and one end of the second edge strip connected with the first edge strip is also provided with a notch;

wherein, the connecting part is in limit fit with the notch.

Preferably, the support section is C-shaped and is convex rearward.

A chair comprises the chair frame.

The technical effects of the utility model:

1) through setting up the spring bolt, fold the back of the chair frame on the seat frame when needs are transported, and then reduce the occupation space of chair frame, increase the vanning volume of chair frame.

2) The utility model discloses a clearance fit and strake one of first buckle spare and second buckle spare and third bolt and the cooperation of strake two are can be very rapid install strake one and strake two in the chair frame side, accomplish strake one and strake two tentatively fixed, strake one still has certain activity space with strake two this moment, consequently, the final fixed of strake one and strake two is accomplished through the first bolt of installation handrail frame and pivot at last, promptly the utility model provides a chair frame has been accomplished simultaneously through first bolt and pivot in the assembling process and has been fixed strake one, strake two and handrail frame's installation, has reduced the equipment step and has improved the packaging efficiency, and fixed reliable, elegant appearance.

Drawings

FIG. 1 is a schematic structural view of a chair frame according to an embodiment of the present invention (the side bar assembly and the armrest frame are omitted);

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

fig. 4 is a first schematic structural diagram of a first edge strip and a second edge strip in the embodiment of the present invention;

fig. 5 is a schematic structural diagram of a first edge strip and a second edge strip according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a first fastening member according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a second chair frame according to an embodiment of the present invention (without armrest frame);

FIG. 8 is an enlarged view of a portion of FIG. 7 at C;

fig. 9 is a schematic structural view of a sixth connecting plate.

Description of reference numerals: 1. a back of chair frame; 2. a chair seat frame; 40. a first edge strip; 41. a second edge strip; 410. a first mounting hole; 411. a second mounting hole; 6. a first fastener; 42. a connecting portion; 11. a backrest section; 12. a support section; 61. reinforcing ribs; 62. a card slot; 63. a boss portion; 500. a first connecting plate; 510. a second connecting plate; 501. a first connecting rod; 511. a second connecting rod; 7. a spring bolt; 8. a connecting seat; 9. pulling a rope; 90. a rope fastener; 502. a seventh connecting plate; 503. an eighth connecting plate; 5030. a long hole; 512. a fifth connecting plate; 513. a sixth connecting plate; 5031. a third extension portion.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The first embodiment is as follows:

a chair frame as shown in fig. 1-3, which comprises a chair back frame 1, a chair seat frame 2 and a left armrest frame and a right armrest frame (not shown in the figures); one end of the armrest frame is fixed on the chair seat frame 2 through a fastener, and the other end of the armrest frame is hinged with the chair back frame 1; the chair back frame 1 is arranged on the chair seat frame 2 through a connecting component;

coupling assembling includes first connecting piece, second connecting piece and stay cord 9, first connecting piece and 2 fixed connection of seat frame, the second connecting piece is with 1 fixed connection of back of the chair frame and lie in the inboard of first connecting piece, the both sides are equipped with a bolt hole respectively about first connecting piece, both ends are connected with a spring bolt 7 respectively about stay cord 9, and two spring bolts 7 are installed respectively on the left and right sides of second connecting piece to can stretch into two bolt holes respectively and fix back of the chair frame 1.

Therefore, the spring bolt 7 is arranged, so that the chair back frame 1 is folded on the chair seat frame 2 when the chair needs to be transported, the occupied space of the chair frame is further reduced, and the packing amount of the chair frame is increased.

In this embodiment, the first connecting member includes two left and right first connecting plates 500, and the two first connecting plates 500 are respectively welded and fixed to two left and right inner side walls of the seat frame 2; the two pin holes are respectively positioned on the two first connection plates 500,

the second connecting piece includes two second connecting plates 510 about, two second connecting plates 510 respectively with two inside walls welded fastening about the back of the chair frame 1, two spring bolts 7 are installed respectively on two second connecting plates 510.

Further preferably, the first connecting member further comprises a first connecting rod 501, the left and right ends of the first connecting rod 501 are respectively welded and fixed with the two first connecting plates 500,

the second connecting piece further comprises a second connecting rod 511, and the left end and the right end of the second connecting rod 511 are respectively welded and fixed with the two second connecting plates 510; so set up, can effectively prevent dropping of first connecting plate 500 and second connecting plate 510 to increase the structural strength of first connecting piece and second connecting piece.

In this embodiment, the two first connecting plates 500 respectively extend outward to form first extending portions, and the first extending portions are used for preventing the back frame 1 from rotating towards a direction in which an included angle between the back frame 1 and the seat frame 2 increases; thus, when the spring bolt 7 is extended out of the bolt hole, the seat back frame 1 can be rotated only in the folding direction.

In this embodiment, a connection seat 8 and a rope buckle 90 are further provided, the connection seat 8 includes two parallel third connection plates and a fourth connection plate for connecting the two third connection plates, the two third connection plates are respectively provided with first through holes with the same axis, the fourth connection plate is provided with a second through hole, the pull rope 9 passes through the two first through holes, and the rope buckle 90 partially extends into the second through hole and is connected with the pull rope 9; thus, when the seat back frame 1 needs to be folded, only the cord fastener 90 needs to be pulled.

In this embodiment, the backrest frame 1 comprises a backrest section 11 and a support section 12, which are integrally formed or fixedly connected, the support section 12 is located below the backrest section 11, the second connecting member is fixedly installed at the bottom of the support section 12,

as shown in fig. 4-5, a left edge strip assembly and a right edge strip assembly are further provided, the edge strip assembly comprises an edge strip I40 and an edge strip II 41, the edge strip I40 is located above the edge strip II 41, and both the edge strip I and the edge strip II are of a shell structure; the first edge strip 40 and the second edge strip 41 are both arranged on the side face of the chair frame, and the joint of the first edge strip 40 and the second edge strip 41 is close to the joint of the backrest section 11 and the support section 12; the arrangement is that the joint of the back frame 1 and the seat frame 2 and the joint of the first edge strip 40 and the second edge strip 41 are staggered, so that the fixed connection of the back frame 1 and the seat frame 2 can stabilize the fixed connection of the first edge strip 40 and the second edge strip 41, and the fixed connection of the first edge strip 40 and the second edge strip 41 can also stabilize the fixed connection of the back frame 1 and the seat frame 2;

one end of the armrest frame is fixedly arranged on the side surface of the chair seat frame 2 through a first bolt, and the other end of the armrest frame is hinged with the chair back frame 1 at the joint of the backrest section 11 and the support section 12 through a rotating shaft;

the inner surface of the first edge strip 40 is fixedly connected with or integrally formed with a plurality of first buckling pieces 6, the first buckling pieces 6 are mounted on the chair back frame 1 through third bolts, clamping grooves 62 are formed in the first buckling pieces 6, the clamping grooves 62 are in clearance fit with the third bolts, wherein the opening direction of at least one clamping groove 62 of one first buckling piece 6 is downward, and the opening direction of at least one clamping groove 62 of one first buckling piece 6 is upward; therefore, two degrees of freedom of the first edge strip 40 in the vertical direction are limited through the two fasteners with opposite opening directions, so that the first edge strip 40 can be preliminarily installed on the chair back frame 1;

a plurality of second buckling pieces are fixedly connected to the inner surface of the second edge strip 41 or integrally formed, and the second buckling pieces are installed on the seat frame 2 through third bolts; thus, the second edge strip 41 can be preliminarily installed on the seat frame 2;

the lower end of the first edge strip 40 is in limit fit with the upper end of the second edge strip 41; thus, the first edge strip 40 is preliminarily fixed through the second edge strip 41;

the first bolt and the rotating shaft penetrate through the mounting hole on the second edge strip 41 and fix the second edge strip 41 on the seat frame 2 and the side surface of the support section 12. Thus, through the final fixation of the second edge strip 41, the first edge strip 40 is completely fixed on the side surface of the chair back frame 1;

in addition, the first bolt and the rotating shaft are used for fixing the armrest frame, so that compared with the original assembly of the chair frame, the parts are saved, the assembly steps are reduced, the assembly efficiency is improved, and the chair frame is reliable in fixing and attractive and elegant in appearance.

In this embodiment, strake two 41 includes first section and second section, first section and the laminating of seat frame 2, the laminating of second section and support section 12, the mid portion of first section is equipped with first mounting hole 410, and the outer end department that is close to the second section is equipped with second mounting hole 411, first bolt passes first mounting hole 410, the pivot passes second mounting hole 411.

In this embodiment, two second fastening pieces are distributed on the second edge strip 41, and the two second fastening pieces are respectively located at two sides of the first mounting hole 410.

In this embodiment, the first fastening members 6 are distributed on the inner surface of the first edge strip 40, wherein the opening direction of the slot 62 of one first fastening member 6 faces upward, and the opening directions of the slots 62 of the other two first fastening members 6 face downward.

In this embodiment, an upward protruding connecting portion 42 is further disposed at an end of the side bar two 41 connected to the side bar one 40, and a notch is further disposed at an end of the side bar one 40 connected to the side bar two 41, or; a connecting part 42 protruding downwards is further arranged at one end, connected with the edge II 41, of the edge I40, and a notch is further formed at one end, connected with the edge I40, of the edge II 41;

wherein the connecting part 42 is in limit fit with the notch; therefore, the edge strip II 41 is embedded into the notch of the edge strip I40 or the edge strip II 41 is sleeved on the connecting part 42 of the edge strip I40, so that the fixation between the edge strip I40 and the edge strip II 41 can be completed, and the fixing device is convenient and simple; in addition, because the connection position of the edge strip two 41 and the edge strip one 40 is located at the junction of the support section 12 and the backrest section 11 on the seat back frame 1, the connection part 42 faces upward or downward, namely, the interference fit between the connection part 42 and the notch mainly limits the freedom degree of the edge strip two 41 in the front and rear two directions, and the cooperation of the fastener and the third bolt limits the freedom degree of the edge strip two 41 and the edge strip one 40 in the left and right two directions, so that the edge strip two 41 and the edge strip one 40 are preliminarily fixed on the side surface of the seat back frame.

In this embodiment, as shown in fig. 6, the first locking member 6 is further provided with two parallel ribs 61, the ribs 61 are closer to the inner surface of the first edge strip 40 than the locking grooves 62, and the distance between the two ribs 61 is greater than the width of the locking grooves 62. Preferably, the side walls of the two sides of the slot 62 are both provided with a protruding part 63, and the protruding part 63 is close to the opening end of the slot 62; the reinforcing rib 61 is provided to ensure the structural strength of the whole first fastener 6, and the engaging groove 62 and the protruding portion 63 are provided to be mainly in limit fit with the third bolt.

In this embodiment, the first fastener 6 and the second fastener have the same structure.

In this embodiment, the support section 12 is C-shaped and protrudes rearward; the arrangement can enhance the supporting capability of the backrest frame.

The installation process of this embodiment is as follows:

1) the chair back frame 1 and the chair seat frame 2 are fixedly connected through a fourth bolt;

2) two third bolts corresponding to the two first buckling pieces 6 with the openings facing downwards on the first edge strip 40 are installed on the chair back frame 1, the first edge strip 40 slides downwards to the bottom through the matching of the two first buckling pieces 6 corresponding to the first edge strip 40 and the two corresponding third bolts, and then the third bolts are in threaded matching with the first buckling pieces 6 facing upwards; further completing the primary fixing of the first edge strip 40;

3) inserting the connecting part 42 into the notch, and then matching the two second buckling pieces on the second edge strip 41 with the third bolt in a threaded manner to finish the primary fixation of the second edge strip 41;

4) and installing the armrest frame on the chair frame through the first bolt and the rotating shaft, and simultaneously finishing the final fixing of the first edge strip 40 and the second edge strip 41.

A chair comprises the chair frame.

Example two:

the difference between the present embodiment and the first embodiment is: in this embodiment, the pull cord 9 is not used and only one latch 7 is provided.

A chair frame as shown in fig. 7 comprises a chair back frame 1, a chair seat frame 2 and a left armrest frame and a right armrest frame (not shown in the figure); one end of the armrest frame is fixed on the chair seat frame 2 through a fastener, and the other end of the armrest frame is hinged with the chair back frame 1; the chair back frame 1 is arranged on the chair seat frame 2 through a connecting component;

coupling assembling includes first connecting piece and second connecting piece, first connecting piece and 2 fixed connection of seat frame, the second connecting piece is with 1 fixed connection of back of the chair frame and be located the inboard of first connecting piece, one side of first connecting piece is equipped with a bolt hole, spring bolt 7 is installed to one side that is close to the bolt hole on the second connecting piece, spring bolt 7 can stretch into the bolt downthehole in order to fix back of the chair frame 1.

In this embodiment, as shown in fig. 8 and 9, the first connecting member includes a seventh connecting plate 502 located on the left side and an eighth connecting plate 503 located on the right side, and the seventh connecting plate 502 and the eighth connecting plate 503 are respectively welded and fixed to the left and right inner side walls of the seat frame 2; the bolt holes are positioned on the two seventh connecting plates 502, the eighth connecting plate 503 is provided with a long hole 5030,

the second connecting piece comprises a fifth connecting plate 512 positioned on the left side and a sixth connecting plate 513 positioned on the right side, and the fifth connecting plate 512 and the sixth connecting plate 513 are respectively welded and fixed with the left inner side wall and the right inner side wall of the seat back frame 1; the spring bolt 7 is arranged on the fifth connecting plate 512, the sixth connecting plate 513 is provided with an installation column,

wherein, during the rotation of the chair back frame 1, the mounting column can extend into the slot 5030.

Preferably, the first connecting member further comprises a first connecting rod 501, the left end and the right end of the first connecting rod 501 are respectively welded and fixed with a seventh connecting plate 502 and an eighth connecting plate 503,

the second connecting piece further comprises a second connecting rod 511, and the left end and the right end of the second connecting rod 511 are respectively welded and fixed with a fifth connecting plate 512 and a sixth connecting plate 513.

In this embodiment, the seventh connecting plate 502 and the eighth connecting plate 503 extend outward to form a second extending portion and a third extending portion 5031, respectively, the second extending portion and the third extending portion 5031 are used to prevent the back frame 1 from rotating in a direction that an included angle between the back frame 1 and the seat frame 2 increases, and the long hole 5030 is partially located on the third extending portion 5031; thus, the third extension 5031 also allows the mounting post to extend into the slot 5030 during rotation of the seat back frame 1.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A chair frame comprises a chair back frame (1), a chair seat frame (2) and a left handrail frame and a right handrail frame; it is characterized in that;

the chair back frame (1) comprises a backrest section (11) and a support section (12) which are integrally formed or fixedly connected, the support section (12) is positioned below the backrest section (11), one end of the armrest frame is fixedly arranged on the side surface of the chair seat frame (2) through a fastener, and the other end of the armrest frame is hinged with the chair back frame (1) at the joint of the backrest section (11) and the support section (12) through a rotating shaft; the supporting section (12) is detachably connected with the chair seat frame (2) through a connecting component; so that the seat back frame can be folded on the seat frame.

2. A chair frame according to claim 1, characterized in that the connecting assembly comprises a first connecting member, a second connecting member and a pull rope (9), the first connecting member is fixedly connected with the chair seat frame (2), the second connecting member is fixedly connected with the supporting section (12) and is positioned at the inner side of the first connecting member, a bolt hole is respectively arranged at the left side and the right side of the first connecting member, a spring bolt (7) is respectively connected at the left end and the right end of the pull rope (9), and two spring bolts (7) are respectively arranged at the left side and the right side of the second connecting member and can respectively extend into the two bolt holes to fix the chair back frame (1).

3. A chair frame according to claim 2, characterized in that the first connecting member comprises a left first connecting plate (500) and a right first connecting plate (501), the two first connecting plates (500) are respectively welded and fixed with the left inner side wall and the right inner side wall of the chair seat frame (2); the two bolt holes are respectively positioned on the two first connecting plates (500), and the left end and the right end of the first connecting rod (501) are respectively welded and fixed with the two first connecting plates (500);

the second connecting piece includes two second connecting plates (510) and a second connecting rod (511) about controlling, two second connecting plates (510) respectively with two inside wall welded fastening about supporting section (12), two spring bolts (7) are installed respectively on two second connecting plates (510), both ends respectively with two second connecting plates (510) welded fastening about second connecting rod (511).

4. A chair frame according to claim 3, characterized in that the two first connecting plates (500) respectively extend outwards to form first extensions for preventing the back frame (1) from rotating in a direction in which the angle between the back frame (1) and the seat frame (2) increases.

5. A chair frame according to claim 2, characterized in that a connecting seat (8) and a rope buckle (90) are further provided, the connecting seat (8) comprises two parallel third connecting plates and a fourth connecting plate for connecting the two third connecting plates, the two third connecting plates are respectively provided with coaxial first through holes, the fourth connecting plate is provided with a second through hole, the pull rope (9) passes through the two first through holes, and the rope buckle (90) partially extends into the second through hole and is connected with the pull rope (9).

6. The chair frame according to claim 1, characterized in that a left side bar assembly and a right side bar assembly are further provided, the side bar assemblies comprise a first side bar (40) and a second side bar (41), the first side bar (40) is positioned above the second side bar (41) and is of a shell structure; the first edge strip (40) and the second edge strip (41) are both arranged on the side face of the chair frame, and the joint of the first edge strip (40) and the second edge strip (41) is close to the joint of the backrest section (11) and the support section (12);

the inner surface of the first edge strip (40) is fixedly connected with or integrally formed with a plurality of first buckling pieces (6), the first buckling pieces (6) are installed on the chair back frame (1) through third bolts, clamping grooves (62) are formed in the first buckling pieces (6), the clamping grooves (62) are in clearance fit with the third bolts, the opening direction of at least one clamping groove (62) of one first buckling piece (6) faces downwards, and the opening direction of at least one clamping groove (62) of one first buckling piece (6) faces upwards;

a plurality of second buckling pieces are fixedly connected to the inner surface of the second edge strip (41) or integrally formed, and the second buckling pieces are installed on the chair seat frame (2) through third bolts;

the lower end of the first edge strip (40) is in limit fit with the upper end of the second edge strip (41);

one end of the armrest frame is fixedly arranged on the side surface of the chair seat frame (2) through a first bolt, and the other end of the armrest frame is hinged with the chair back frame (1) at the joint of the back rest section (11) and the support section (12) through a rotating shaft; the first bolt and the rotating shaft penetrate through a mounting hole in the second edge strip (41) and fix the second edge strip (41) on the seat frame (2) and the side surface of the supporting section (12).

7. A chair frame according to claim 6, characterized in that the second side bar (41) comprises a first section and a second section, the first section is attached to the chair seat frame (2), the second section is attached to the supporting section (12), a first mounting hole (410) is formed in the middle of the first section, a second mounting hole (411) is formed near the outer end of the second section, the first bolt passes through the first mounting hole (410), and the rotating shaft passes through the second mounting hole (411).

8. A chair frame according to claim 6, characterized in that the end of the second side bar (41) connected with the first side bar (40) is further provided with a connecting part (42) protruding upwards, and the end of the first side bar (40) connected with the second side bar (41) is further provided with a notch, or; a connecting part (42) protruding downwards is further arranged at one end, connected with the edge II (41), of the edge I (40), and a notch is further formed at one end, connected with the edge I (40), of the edge II (41);

wherein the connecting part (42) is in limit fit with the notch.

9. A chair frame according to claim 6, characterised in that the support section (12) is C-shaped and is convex towards the rear.

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

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