CN203828452U - Backrest chair - Google Patents

Abstract

The utility model provides a backrest chair. Chair frames comprise a support leg frame, seat posts and backrest rods, wherein the seat posts and the backrest rods are connected to the support leg frame. The support leg frame comprises side supports located on side faces and crossed support rod sets located on a front vertical face and a rear vertical face. Each side support comprises a front support leg and a rear support leg which is supported on the upper portion of the front support leg in a crossed mode. The backrest rods are riveted onto the rear support legs. The seat rods are riveted to the front support legs, and then the rear ends of the seat rods and the lower ends of the backrest rods are riveted to the rear support legs. The lower ends of two crossed support rods between the two rear support legs are connected to the rear support legs respectively, and the upper ends of the two crossed support rods are connected to the backrest rods. The two sides of the front vertical face are provided with vertical rods respectively. The lower ends of the vertical rods are movably connected to the front support legs. The seat rods are connected to the vertical rods. The lower ends of the two crossed support rods are connected to the lower portions of the front support legs respectively, and the upper ends of the two crossed support rods are connected to the vertical rods respectively and located below the seat rods. The lower ends of the support rods of the crossed support rod set on the rear vertical face are movably positioned on the rear support legs through positioning sliding blocks. The backrest chair can be folded, and the elevation angle between a chair back and a chair seat can be adjusted, so that a person can feel more comfortable when sitting on or leaning against the backrest chair.

Description

A kind of chair

Technical field

The utility model, about a kind of daily living article, refers to a kind of foldable chair especially.

Background technology

The form of folding chair is varied, and it has is convenient to collection and the function of carrying, and is the standing household articles of people family.At present, common Foldable backrest chair includes chair frame, seat support and the chair back, it can carry out whole folding, this folding seat is exactly to utilize between each vertical support bar, to connect the pole of intersecting, the top and bottom portion of pole is connected to and is arranged on the pin joint seat at support bar middle part and the base of bottom, utilize expansion between the pole that all has intersection between each bracing frame or shrink closing and realize expansion and the folding between support bar, thereby the expansion that realizes chair frame is used or by its whole folding.For such structure, two support bars that are positioned at rear as the chair back are upright, so chair frame in use, between the chair back and seat support at right angles, and the elevation angle of the chair back also can not regulate, therefore user is when seating, can not slightly to swinging back by, reach more comfortable sitting posture, and being slightly formed slopely, necessarily faces upward by angle the chair back, after such fixed angle sitting, comfort level is not good yet, such chair frame structure, and variation can not be adjusted in the elevation angle between the chair back and seat support, backrest can not slightly make adjustments when seating, still perfect not in use.

Utility model content

The purpose of this utility model is to provide a kind of chair, and it can folding become small size, and the elevation angle between the chair back and seat support can regulate, and makes chair more comfortable when seating.

For reaching above-mentioned purpose, solution of the present utility model is:

A kind of chair, chair frame includes foot-supporting frame and connects seat bar and the back support bar on it, foot-supporting frame comprises the crossing branching rod group that is positioned at the side stand of side and is positioned at front and back facade, and side stand comprises that one to the vertical front support leg supporting and the cross support rear leg on front support leg top that retreads; Back support bar is articulated on rear leg, and after seat bar and front support leg pivot joint, its rear end is articulated on rear leg with the lower end of back support bar again, and between two rear legs, two lower ends that are the pole of intersection are connected on rear leg, and upper end is connected in back support bar; In front facade, both sides are respectively equipped with vertical rod, the lower end of vertical rod is movably connected on front support leg, seat bar is connected to vertical rod, two lower ends that are the pole of intersection are connected to front support leg below, upper end is connected in vertical rod and is positioned at a bar below, and in the crossing branching rod group of rear facade, a positioning sliding block activity orientation is passed through on rear leg in the lower end of pole.

Further, positioning sliding block is provided with a snak link, snak link includes the positioning seat being nested with on rear leg, one button middle piece is articulated on positioning seat, the inner side, one end of button connects a located lateral pin, the outer end of a back-moving spring is supported in inner side, other end upper end, and on rear leg, in corresponding snak link, alignment pin is provided with at least one locating hole through position.

Further, be provided with a bar, the parallel bar top that is positioned at of bar, the front end of bar is connected on the top of vertical rod, and the rear end of bar is connected in back support bar.

Further, rear leg is provided with a connection piece, and the seat rear end of bar and the lower end of back support bar are articulated in respectively on this connector,

Further, back support bar be provided with one can upward sliding connector, the upper end of front support leg is articulated on connector.

Further, on seat bar with in interconnection place of vertical rod, a contiguous block is set, connects this and connect piece connecting upright pole, the upper end of the pole of intersecting in facade before simultaneously is also connected to this contiguous block.

Further, front support leg is to vertical support of retreading, and rear leg cross support is on front support leg top, and the upper end of rear leg is articulated with a connection strap, and the other end of connection strap connects front support leg.

Adopt after said structure, back support bar in the utility model is together with being connected between crossing branching rod in rear facade and seat bar, regulate the up and down location of pole intersecting, can make the elevation angle of back support bar regulate, chair back bar can slightly recede or slightly uprightly adjust, and during seating, capable of regulating is faced upward by angle with can be more comfortable.And chair frame also can easily be shunk closing or launch to realize be used, realize the whole folding of chair frame and be beneficial to collection and transportation.

Accompanying drawing explanation

Fig. 1 is the utility model deployed condition schematic perspective view (compared with big-elevation);

Fig. 2 is the utility model deployed condition schematic perspective view (elevation angle diminishes);

Fig. 3 is the utility model half folding state schematic diagram;

Fig. 4 is the utility model folding state schematic diagram;

Fig. 5 is side cutaway view of the present utility model;

Fig. 5 A is the partial enlarged drawing at A place in Fig. 5;

Fig. 6 the utility model carries out the schematic diagram (demonstration side view) of elevation angle adjusting.

The specific embodiment

In order further to explain the technical solution of the utility model, below by specific embodiment, the utility model is elaborated.

As shown in Figure 1, chair of the present utility model, it comprises chair frame and connects the chair cloth (chair frame being only shown, not shown chair cloth in figure) on it.Chair frame structure comprises foot-supporting frame and is connected to seat bar and the back support bar on foot-supporting frame, foot-supporting frame comprises the crossing branching rod group that is positioned at the side stand of side and is positioned at front and back facade, wherein, side stand comprises a front support leg 11 and a rear leg 12, front support leg 11 is to vertical support of retreading, rear leg 12 cross supports are on front support leg 11 tops, both intersect support, and the upper end at rear leg 12 is articulated with connection strap 13, the other end of connection strap 13 connects on front support leg 11, when chair frame is carried out folding, front support leg 11 leaves the support of rear leg, and between the two, under the connection function of connection strap, coordinate chair frame folding to receive leans on simultaneously.

Back support bar 2 is articulated on rear leg 12, seat bar 3 in order to connecting chair cloth is pivoted on front support leg 11 and rear leg 12 simultaneously, and the seat rear end of bar 3 and the lower end of back support bar 2 are articulated in respectively on rear leg 12, can on rear leg 12, be provided with a connection piece 41, the seat rear end of bar 3 and the lower end of back support bar 2 are articulated in respectively on this connector 41.Meanwhile, in back support bar 2, be provided with one can upward sliding connector 42, the upper end of front support leg 11 is articulated on connector 42.

In the front facade of two chair frames and rear facade, be also provided with crossing branching rod group, between two rear legs 12, be connected with one group of crossing branching rod group, in crossing branching rod group, two lower ends that are the pole 51 of intersection are connected on rear leg 12, and upper end is connected in back support bar 2.And in the front facade of chair frame, also be provided with one group of crossing branching rod group, for coordinating the connection of crossing branching rod group, on the both sides of front facade, be also provided with vertical rod 6, in vertical rod 6, connect and on front support leg 11, be connected with a vertical rod 6, vertical rod 6 lower ends are movably connected on front support leg 11 by a slide block 61, and vertical rod 6 extends upward, and seat bar 3 is connected in this vertical rod.Further, also bar 7 can be set in chair frame, a parallel bar 3 tops that are positioned at of bar 7, the front end connection of bar 7 is just connected on the top of vertical rod 6, and the rear end of bar 7 is connected in back support bar 2.Be arranged on before chair frame in facade two poles 52 that are intersection, the lower end of this pole 52 is connected to front support leg 11 belows, be positioned at slide block 61 places, below, and the upper end of pole 52 is connected in vertical rod 6 and be positioned at a bar 3 belows, in interconnection place that can be present on bar 3 with vertical rod 6, a contiguous block 31 is set, on contiguous block 31, connected vertical rod 6, the upper end of pole 52 also can be connected on this contiguous block 31 simultaneously, structure is connected simpler.

For the backrest elevation angle of the seat realized can regulate, shown in Fig. 1, Fig. 2, Fig. 5, Fig. 6, in the utility model, be arranged in the crossing branching rod group of rear facade, the lower end of pole 51 is arranged on rear leg 12 by a movable location of positioning sliding block 8.Shown in Fig. 5, in the present embodiment, positioning sliding block 8 is provided with a snak link, snak link includes the positioning seat 80 being nested with on rear leg 12, one button 81 stage casings are articulated on positioning seat 80, the inner side, one end of button 81 connects located lateral pin 82, the outer end of back-moving spring 83 is supported in inner side, other end upper end, in rear leg 11, in corresponding snak link, alignment pin 82 is provided with at least one locating hole 121 through position, in snak link, alignment pin 82 can be positioned on locating hole 121, thereby make snak link location, and when pressing button 81, alignment pin 82 is deviate from from locating hole 121.As shown in Figure 6, when need to regulate the seating elevation angle of chair frame, only need to regulate positioning sliding block 8, for example contact the positioning action of positioning sliding block 8, press the button 81 of snak link, alignment pin departs from, by positioning sliding block 8 down slidings, lower after positioning sliding block 8 is positioned at the position of rear leg 12 and relocate, positioning sliding block 8 is on rear leg 12 downwards in active procedure, drive two poles of intersecting 51 movable respectively downwards, during crossing branching rod 2 downward movable, affect connector 42 and have activity trend, because connector 42 can not be movable downwards, thereby interlock has driven front support leg 11 and back support bar 2, make the relative rear leg 12 of back support bar 2 and seat bar 3 micro-receding and form the larger elevation angle, make back support bar 2 form larger facing upward by angle.Otherwise, when changing facing upward of backrest, lean on angle, its elevation angle is diminished, only need upward sliding positioning sliding block 8, make it be positioned on rear leg 12, the movable positioning sliding block 8 that makes progress drives pole two 52 upwards movable, and then makes back support bar 2 inwardly movable, the elevation angle of backrest diminishes, and back support bar 2 is slightly upright.A plurality of locating holes 121 can be set on rear leg 12, form a plurality of gears, while making back support bar 2 regulate, can have the selection of more elevations angle angle.

Chair frame of the present utility model is when carrying out folding, in conjunction with shown in Fig. 1 to Fig. 4, remove the positioning action of positioning sliding block 8, make the rear leg 12 of bearing diagonal leave the support to front support leg 11, and to the parallel closing of back support bar 2 direction, again by front support leg 11 to rear leg 12 closings, movable by being articulated on connection strap 13 between front support leg 11 and rear leg 12, in closing process, crossing branching rod group in front facade and rear facade is also drawn closing in, connector 42 is upwards movable in back support bar 2, seat bar 3 and bar 7 are also upwards received and are received and lean on to back support bar 2 directions, simultaneously, vertical rod 6 is also also upwards movable under induced effect, slide block 61 is upwards movable in front support leg 11, as shown in Figure 3, finally, front support leg 11 is together with seat bar 3, bar 7 and vertical rod 6 activity that all makes progress is received and is leaned on backward, thereby completing whole concentrated receipts leans on, as shown in Figure 4.

Chair structure of the present utility model, back support bar 2 is together with being connected between crossing branching rod in rear facade and seat bar 3, regulate the up and down location of pole 51 intersecting, can make the elevation angle of back support bar 2 regulate, chair back bar 2 can slightly recede or slightly uprightly adjust, and during seating, capable of regulating is faced upward by angle with can be more comfortable.And chair frame also can easily be shunk closing or launch to realize be used, realize the whole folding of chair frame and be beneficial to collection and transportation.

Above-described embodiment and graphic and non-limiting product form of the present utility model and style, suitable variation or modification that any person of an ordinary skill in the technical field does it, all should be considered as not departing from patent category of the present utility model.

Claims (6)

1. a chair, chair frame includes foot-supporting frame and connects seat bar and the back support bar on it, foot-supporting frame comprises the crossing branching rod group that is positioned at the side stand of side and is positioned at front and back facade, and side stand comprises that one to the vertical front support leg supporting and the cross support rear leg on front support leg top that retreads; Back support bar is articulated on rear leg, and after seat bar and front support leg pivot joint, its rear end is articulated on rear leg with the lower end of back support bar again, and between two rear legs, two lower ends that are the pole of intersection are connected on rear leg, and upper end is connected in back support bar; In front facade, both sides are respectively equipped with vertical rod, the lower end of vertical rod is movably connected on front support leg, seat bar is connected to vertical rod, two lower ends that are the pole of intersection are connected to front support leg below, upper end is connected in vertical rod and is positioned at a bar below, it is characterized in that: in the crossing branching rod group of rear facade, a positioning sliding block activity orientation is passed through on rear leg in the lower end of pole.

2. a kind of chair as claimed in claim 1, it is characterized in that: positioning sliding block is provided with a snak link, snak link includes the positioning seat being nested with on rear leg, one button middle piece is articulated on positioning seat, the inner side, one end of button connects a located lateral pin, the outer end of a back-moving spring is supported in inner side, other end upper end, and on rear leg, in corresponding snak link, alignment pin is provided with at least one locating hole through position.

3. a kind of chair as claimed in claim 1, is characterized in that: be further provided with a bar, bar is parallel to be positioned at above a bar, and the front end of bar is connected on the top of vertical rod, and the rear end of bar is connected in back support bar.

4. a kind of chair as claimed in claim 1, is characterized in that: rear leg is provided with a connection piece, and the seat rear end of bar and the lower end of back support bar are articulated in respectively on this connector,

A kind of chair as claimed in claim 1, is characterized in that: back support bar be provided with one can upward sliding connector, the upper end of front support leg is articulated on connector.

5. a kind of chair as claimed in claim 1, is characterized in that: on seat bar with in interconnection place of vertical rod, a contiguous block is set, connects this and connect piece connecting upright pole, the upper end of the pole of intersecting in facade before simultaneously is also connected to this contiguous block.

6. a kind of chair as claimed in claim 1, is characterized in that: front support leg is to vertical support of retreading, and rear leg cross support is on front support leg top, and the upper end of rear leg is articulated with a connection strap, and the other end of connection strap connects front support leg.