CN210783676U - Chair with detachable seat - Google Patents

Abstract

The utility model discloses a chair, which comprises chair legs, a chair seat and a chair back, wherein the chair legs comprise front legs and rear legs, the front legs and the rear legs are obliquely arranged, a plurality of positioning holes are arranged on the front legs and the rear legs at intervals, a first adjusting hole and a second adjusting hole are respectively arranged on the left side and the right side of the chair seat along the length direction of the chair seat, and the first adjusting holes are in a straight-line-shaped long hole; after the position of the chair seat is adjusted in the height direction and the front-back direction, the chair seat is fixed by inserting the fasteners into the first adjusting holes and the second adjusting holes respectively and screwing the fasteners into the positioning holes of the front leg and the rear leg. The utility model provides a can adjust seat of sitting deeply and sitting high, in this seat, the seat support can be adjusted about and around between two chair legs, adjusts the seat support from top to bottom and can adapt to different height children's operation requirement, and the seat support front and back adjustment can adjust and sit deeply, compared with prior art's children's seat, the utility model discloses a seat simple structure, the cost is lower, especially is fit for the seat use that the material is nonmetal.

Description

Chair with detachable seat

Technical Field

The utility model relates to a thing to sit on field, in particular to seat.

Background

In the growth process of the children, the height of the children can be continuously increased along with the growth of the ages, and due to the change of the height, the children have different requirements on the sitting depth and the sitting height of the seat at different ages; therefore, a fixed chair cannot meet the use requirements of children in different age groups.

The children's seat of adjustable seat depth and seat height among the prior art generally adopts lift gas pole to realize, and its structure is comparatively complicated and the cost is higher.

For the seat made of non-metal material such as solid wood chair, the lifting air rod is not suitable.

Therefore, the chair which is suitable for non-metal materials such as solid wood and has a simple structure and can conveniently adjust the sitting height or the sitting depth according to the height of a user is the problem to be solved at present.

Disclosure of Invention

The utility model overcomes the defects in the prior art, and provides a seat, which solves the problems; the seat realizes the adjustment of the seat on the sitting depth and the sitting height through the structural design on the chair legs and the seat, not only simplifies the structure of the air rod type adjustment in the prior art, but also reduces the production cost of the seat.

Furthermore, in the chair, the chair back is fixedly arranged between the chair legs, the chair seat can be adjusted up and down between the two obliquely arranged chair legs, the up-and-down adjustment of the chair seat can meet the use requirements of children with different heights, and the sitting depth can be adjusted by the corresponding front-and-back adjustment of the chair seat.

More specifically, the second adjusting hole is aligned with a positioning hole in the front leg or the rear leg and a fastener penetrates through the positioning hole, the first adjusting hole is a long hole and is always aligned with a corresponding positioning hole in the front leg or the rear leg within the length range of the first adjusting hole, and the seat is fixed in the height direction after the fastener penetrates through the first adjusting hole and the corresponding positioning hole.

The technical scheme of the utility model is realized like this:

a chair comprises chair legs which are bilaterally symmetrical, a chair seat and a chair back which are clamped between the two chair legs, wherein the chair legs comprise front legs and rear legs, the front legs and the rear legs are obliquely arranged, a plurality of positioning holes which are distributed at intervals are respectively arranged on the front legs and the rear legs along the height direction, and a first adjusting hole and a second adjusting hole are respectively arranged on the left side and the right side of the chair seat along the length direction of the chair seat, wherein the first adjusting hole is a straight-line-shaped long hole; after the position of the chair seat is adjusted in the height direction and the front-back direction, the chair seat is fixed by inserting the fasteners into the first adjusting holes and the second adjusting holes respectively and screwing the fasteners into the positioning holes of the front leg and the rear leg.

The utility model provides a seat capable of adjusting the sitting depth and the sitting height, in the seat, a chair back is fixedly arranged between chair legs, a chair seat can be adjusted up and down and back and forth between the two chair legs, the up-down adjustment of the chair seat can meet the use requirements of children with different heights, and the front-back adjustment of the chair seat can adjust the sitting depth; specifically, the second adjusting hole is aligned with a positioning hole in the front leg or the rear leg and a fastener penetrates through the second adjusting hole, the first adjusting hole is a long hole and is always aligned with a corresponding positioning hole in the front leg or the rear leg in the length range of the first adjusting hole, and the seat is fixed in the height direction after the fastener penetrates through the first adjusting hole and the corresponding positioning hole.

Preferably, the second adjusting holes are at least two independent small holes which are arranged at intervals along the front-back direction of the chair seat. Therefore, the sitting depth of the chair seat can be adjusted along the front and back directions on the gears with the same height.

Preferably, the positioning hole is a threaded hole, and the fastener is a screw. Therefore, the connection and fixation are realized, the chair seat and the chair legs cannot be separated, and the use safety is improved.

Preferably, the positioning holes are formed in the inner side faces, opposite to the two front legs and the two rear legs, of the positioning holes. This allows the fasteners to be hidden from view from the exterior of the seat.

Preferably, the seat comprises a seat frame and a seat plate arranged on the seat frame, and the first adjusting hole and the second adjusting hole are arranged on the left side and the right side of the seat frame. The whole weight of the chair seat is convenient to reduce, and in addition, the fastening piece is convenient to be connected with the chair legs from the inside of the seat frame.

Preferably, the chair further comprises a chair plate adjusting mechanism for adjusting the front and rear positions of the chair plate, the chair plate adjusting mechanism comprises a sliding seat, a base and a hand-rotating adjusting screw, and the base is arranged in the chair frame and fixedly connected with the chair frame; the sliding seat is fixedly arranged on the bottom surface of the seat plate, and the left side and the right side of the sliding seat are respectively provided with a sliding block; the base is provided with a bottom plate, limiting plates are respectively and fixedly arranged above the left side and the right side of the bottom plate, a slide way is formed between each limiting plate and the bottom plate, a notch for the sliding block to enter the slide way is reserved on each limiting plate, and the sliding block can slide along the slide way after entering the slide way from the notch; the center of the bottom plate is provided with a long waist hole, the bottom surface of the sliding seat is provided with a threaded connecting hole, and the hand-turning adjusting screw penetrates through the long waist hole to be connected with the threaded connecting hole. By adopting the mode, the sliding seat can slide back and forth along the seat frame, and the arrangement of the double limiting plates at the two sides of the seat in the seat frame limits the up-and-down movement of the seat plate; the sliding seat is sunk into the base of the seat frame to provide sufficient mechanical support for the seat plate, and the sliding seat is contacted with the bottom plate of the base during sliding, so that certain damping property and friction coefficient are ensured; after the seat plate is well adjusted, the hand-rotating adjusting screw is rotated to tightly abut against the bottom plate, so that the sliding seat and the base are relatively fixed.

Preferably, the two sides of the bottom plate extend upwards to form side plates, the upper ends of the side plates are bent towards the middle direction of the bottom plate to form transverse plates, the transverse plates are bent downwards to form limiting plates, and the notches are formed in the transverse plates and the limiting plates. Therefore, the sliding seat and the sliding block can be limited in the base area, and meanwhile, the sliding block is limited in the slideway area except the notch when entering the back from the notch and sliding along the front-back direction of the chair seat.

Preferably, the left side and the right side of the sliding seat are respectively provided with two sliding blocks, and the sliding blocks protrude out of the side wall of the sliding seat along the width direction; the two sliding blocks are arranged in tandem at the same side of the sliding seat; correspondingly, two notches are correspondingly arranged on the limiting plates on the left side and the right side of the bottom plate. The bedplate is spacing from top to bottom through two sliders, has guaranteed stability.

Preferably, the seat frame is square, the base is arranged in the middle of the seat frame in the width direction, the front end and the rear end of the base are fixedly connected with the front end and the rear end of the seat frame, and the base is respectively spaced from the two sides of the seat frame. Therefore, after the base is fixedly connected with the seat frame, the connection between the seat frame and the chair legs is not obstructed.

Preferably, a pedal is arranged between the two front legs, one surface of the pedal is in a front convex design and the other surface of the pedal is in a concave design in the front-back direction of the seat. When the foot is needed to be stepped on, the convex surface is arranged at the front end, so that the comfort of the foot is improved, and when the foot is not needed to be stepped on, the concave surface is arranged at the front end, so that the space of the calf is prevented from being occupied; specifically, in order to enhance the use comfort, one side of the pedal is designed into a front convex arc shape, and the other side of the pedal is designed into a concave arc shape.

Preferably, a plurality of pedal mounting holes are formed in the front leg in the height direction, and after the pedals are adjusted to a preset position in the height direction, two ends of the pedals are fixed in the pedal mounting holes. The height of the pedal is adjustable, so that the pedal can adapt to the use requirements of children with different heights.

Preferably, the two ends of the pedal are respectively fixedly provided with a pedal connecting piece, the pedal connecting piece is a folding lug and comprises a first ear plate and a second ear plate, the first ear plate is fixedly connected with the bottom surface of the pedal, the second ear plate is provided with a through hole, and after the through hole of the second ear plate is aligned with the pedal mounting hole at the corresponding position of the front leg, the pedal knob with a screw rod is adopted to penetrate through the pedal connecting piece to realize the connection and fixation of the pedal and the front leg. The pedal is installed through the pedal connecting piece and the pedal knob, so that the stability is improved, and the installation can be carried out without tools.

Preferably, only the lower end of the front leg is provided with a caster wheel, the caster wheel is arranged on the side of the lower end of the front leg, and the lower end surface of the caster wheel downwards exceeds the lower end surface of the front leg. The design of the caster is added in front of the chair, because the chair has a certain self weight, children are limited in height and strength, and when the chair without the caster is used, adults need to lift the chair and children need to try out a proper position in front of a table, which is a troublesome thing for both adults and children; the design of adding wheels on the front wheels can lead children who are slightly bigger and can land to freely come in and go out in front of the study desk by slightly leaning the chair. For children who are younger in age and cannot land, the adults can easily help the children to come in and go out of the learning desk only by slightly leaning forward the chair. Meanwhile, the seat can not move like a pneumatic chair after being laid flat.

Preferably, a connecting rod is fixedly arranged between the front leg and the rear leg, a strip-shaped hole is formed in the connecting rod, flexible bearing cloth horizontally arranged is arranged at the bottom of the seat, cloth sleeves are connected to the left end and the right end of the flexible bearing cloth, the flexible bearing cloth is arranged between the two connecting rods, and the cloth sleeves penetrate through the strip-shaped hole and then penetrate through the round bar for limiting. The bottom of the chair is additionally provided with a cloth bag soft package, the left connecting rod and the right connecting rod of the chair leg are provided with strip-shaped holes, and the cloth cover penetrates through the strip-shaped holes and then penetrates into a round bar with the length larger than that of the strip-shaped holes, so that the cloth cover cannot be separated from the strip-shaped holes; the bottom increases the cloth pocket and lets whole seat more flexible pleasing to the eye, has also increased the functionality simultaneously, and the cloth pocket can be put schoolbag, sport equipment, and light containing box class.

Preferably, the rear end of the flexible carrying cloth is tied on a rear pull rod, the rear pull rod is clamped between the two rear legs, and the two ends of the rear pull rod are fixedly connected with the two rear legs. Thus, the bearing capacity and stability of the flexible bearing cloth can be enhanced.

Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:

the utility model provides a can adjust seat of sitting deeply and sitting high, in this seat, the seat support can be adjusted about and around between two chair legs, adjusts the seat support from top to bottom and can adapt to different height children's operation requirement, and the seat support front and back adjustment can adjust and sit deeply, compared with prior art's children's seat, the utility model discloses a seat simple structure, the cost is lower, and is fit for the seat use that the material is nonmetal.

Drawings

Fig. 1 is a schematic perspective view of the seat in the embodiment of the present invention when the seat height is a position a, the seat depth is shallow, and the pedals are in the storage state;

FIG. 2 is a schematic perspective view of a chair leg according to an embodiment of the present invention;

FIG. 3 is a side view of a leg of the present invention in an embodiment;

fig. 4 is an exploded perspective view of the seat and seat plate adjusting mechanism according to the embodiment of the present invention;

fig. 5 is a schematic perspective view of the seat cushion and the seat plate when the seat cushion and the seat plate are not assembled according to the embodiment of the present invention;

fig. 6 is a schematic perspective view of the seat cushion and the seat plate of the present invention after being assembled;

fig. 7 is a front view of the seat cushion and the seat plate of the present invention after being assembled;

fig. 8 is a schematic perspective view illustrating the seat frame and the sliding seat of the embodiment of the present invention when they are not assembled;

fig. 9 is a schematic perspective view of the assembled seat frame and sliding seat according to the embodiment of the present invention;

FIG. 10 is a first perspective view of the seat and seat plate adjustment mechanism of the present invention;

FIG. 11 is a schematic perspective view of the seat and seat plate adjusting mechanism of the present invention after being assembled;

FIG. 12 is a schematic cross-sectional view of the seat and seat plate adjusting mechanism of the present invention;

FIG. 13 is an enlarged view of portion a of FIG. 12;

fig. 14 is a schematic perspective view of the seat in the embodiment of the present invention when the seat height is the B-position, the seat depth is shallow, and the pedals are in use;

fig. 15 is a schematic perspective view of the seat in the embodiment of the present invention, when the sitting height is C-position, the sitting depth is shallow, and the pedals are in the storage state;

fig. 16 is a schematic perspective view of the seat in the embodiment of the present invention when the sitting height is D-position, the sitting depth is shallow, and the pedals are in the retracted state;

FIG. 17 is a side view of the embodiment of the present invention, wherein the sitting height of the chair is B position, the sitting depth is shallow, and the pedals are in use;

FIG. 18 is a side view of the embodiment of the present invention, wherein the seat is in the A position, the sitting depth is shallow, and the pedals are in the storage state;

FIG. 19 is a schematic perspective view of the pedal according to the embodiment of the present invention;

FIG. 20 is a front view of the footrest in the embodiment of the present invention;

FIG. 21 is a schematic perspective view of the pedal connecting member according to the embodiment of the present invention;

FIG. 22 is a schematic perspective view of a chair leg with a caster mounted thereon and another chair leg without a caster mounted thereon according to an embodiment of the present invention;

fig. 23 is a schematic perspective view of the round bar, the flexible carrier cloth and the rear pull rod when they are not combined according to the embodiment of the present invention;

FIG. 24 is a schematic perspective view of the round bar, the flexible carrier cloth and the rear link of the present invention when they are combined with the chair legs;

fig. 25 is a schematic perspective view of the chair with the flexible carrier cloth and the rear pull rod combined with the chair legs and the round bar not inserted therein according to the embodiment of the present invention;

fig. 26 is a side view of the seat in the embodiment of the present invention when the seat is in the B position, the seat is deep, and the pedals are in the storage state;

FIG. 27 is a side view of the embodiment of the present invention, wherein the seat is in the B-position, the sitting depth is shallow, and the pedals are in the storage position;

fig. 28 is a side view of the seat in the embodiment of the present invention when the seat is in the B position, the sitting depth is deep, and the pedals are in the use state;

FIG. 29 is a side view of the embodiment of the present invention, wherein the sitting height of the chair is B position, the sitting depth is shallow, and the pedals are in use;

fig. 30 is a schematic perspective view illustrating a back rest and a backrest of a seat according to an embodiment of the present invention when they are not combined together;

FIG. 31 is an enlarged view of the rotating clasp of FIG. 5;

fig. 32 is an enlarged view of the rotary latch of fig. 4.

The figures are numbered: a chair leg 1; a front leg 11; a rear leg 12; a positioning hole 13;

a seat 2; a seat frame 21; a first regulation hole 211; a second adjustment hole 212; a fastener 213; a seat plate 22; a seat cushion 23;

a chair back 3; a backrest 31;

a seat plate adjusting mechanism 4; a slide base 41; a slider 411; threaded connection holes 412; a base 42; a bottom plate 421; a long waist hole 4211; side plates 422; a transverse plate 423; a limiting plate 424; a chute 425; a notch 426; a hand-screw type adjusting screw 43;

a pedal 5; a pedal mounting hole 51; a folded lug 52; a first ear plate 521; a second ear panel 522; a through hole 5221; a foot-operated knob 53; a screw 531; a convex surface 54; a recessed surface 55;

a caster 6; a wheel 61; caster screws 62; a decorative cover 63; caster mounting holes 64;

a connecting rod 7; a strip-shaped hole 71; a flexible carrier cloth 72; a cloth cover 73; a round bar 74; a rear pull rod 75;

the buckle 8 is rotated; a cap body 81; the insert posts 82; a projection 83; slot a 84; a slot B85.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, the term "at least one" means one or more unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The specific implementation manner of the utility model is as follows:

example (b): as shown in fig. 1-32, the present invention provides a chair, which includes left and right symmetric legs 1, a seat 2 and a chair back 3 sandwiched between the two legs 1, wherein the legs 1 include vertically arranged front legs 11 and rear legs 12, a plurality of positioning holes 13 are arranged on the inner side surfaces of the two front legs 11 and the two rear legs 12 opposite to each other along the height direction, and are arranged at intervals, in this embodiment, four positioning holes 13 are provided, and the positioning holes 13 are threaded holes; the seat 2 comprises a square seat frame 21, a seat plate 22 arranged on the seat frame 21 and a seat cushion 23 fixedly arranged on the seat plate 22, wherein the left side and the right side of the seat frame 21 are respectively provided with a first adjusting hole 211 and a second adjusting hole 212 along the length direction of the seat frame 21, the first adjusting hole 211 is a straight long hole, and the second adjusting hole 212 is two independent small holes which are arranged in the front and the back; after the position of the seat 2 is adjusted in the height direction and the front-back direction, the fastening member 213 is inserted into the first and second adjusting holes 211, 212 and screwed into one of the positioning holes 13 of the front and rear legs 11, 12 to fix the position of the seat 2, and the fastening member 213 in this embodiment is a screw.

As shown in fig. 4, 5, 31 and 32, the seat plate 22 and the seat cushion 23 are fixedly mounted by the rotary buckle 8, and the specific mounting manner is as follows: the rotary buckle 8 comprises a cap body 81, a plug post 82 is arranged in the middle of the cap body 81, two ends of the diameter of the plug post 82 are respectively provided with a protrusion 83, four corners of the seat plate 22 and the seat cushion 23 are respectively provided with a slotted hole A84 and a slotted hole B85 corresponding to the protrusions 83 and the plug post 82, wherein the slotted hole A84 and the slotted hole B85 are both penetrated in the front and back direction, but the other surface of the slotted hole B85 is shielded by the seat surface of the seat cushion 23, and the slotted hole B85 cannot be seen from the front surface of the seat cushion 23, so that the appearance is more attractive; the installation process is as follows: firstly, after the seat plate 22 and the seat cushion 23 are correspondingly buckled, the rotating buckle 8 firstly passes through the slotted hole A84 on the seat plate 22 and then continuously passes through the slotted hole B85 on the seat cushion 23, and then the rotating buckle 8 is rotated by 90 degrees, so that the protrusion 83 is clamped with the slotted hole B85, and then the seat plate 22 and the seat cushion 23 can be fixed.

As shown in fig. 1, 14-16, 25 and 30, in this embodiment, the backrest 3 is further provided with a backrest 31, the backrest 31 is connected with the backrest 3 by the rotating buckle 8, and the specific connection process is similar to the connection process of the seat plate 22 and the seat cushion 23, and will not be described herein.

Specifically, when the age of the child is increased, the height and the weight of the child are increased, and when the height of the child is increased to the extent that the current seat does not adapt to the use requirements of the child, the sitting depth and the sitting height of the seat can be adjusted by an adult according to the specific height of the child, so that the seat adapts to the current height of the child; in the chair of the embodiment, the backrest 3 is fixedly arranged between the legs 1, and the seat 2 can be adjusted up and down, i.e. adjusting the sitting height of the seat 2, and back and forth between the two legs 1, i.e. adjusting the sitting depth of the seat 2.

As shown in fig. 3 and 10, the seat of the present embodiment is divided into four gears, specifically, A, B, C, D gears, in the sitting height, and the position of the seat 2 in the gear a is the highest, so that the seat is suitable for a height of about 180 cm; the position of the D-gear seat 2 is the lowest, and the D-gear seat is suitable for about 135cm of height; B. the C gear is a middle gear and is respectively suitable for children with the height of 165cm and the height of 150 cm.

In this embodiment, an example of the adjustment mode when the seat 2 is at the lowest position, i.e. the D-position, is as follows: firstly, the seat 2 is horizontally lifted into the two chair legs 1, a small hole in the second adjusting holes 212 on the two sides of the seat 2 is aligned with a threaded hole indicated by an arrow D in the rear leg 12, at the moment, a screw is inserted into the threaded hole on the inner side surface of the rear leg 12 from the second adjusting hole 212 on the seat frame 21, the screw is tightened to fix the rear end of the seat 2 with the rear leg 12, the first adjusting hole 211 is always aligned with the corresponding threaded hole in the front leg 11 in the length range of the first adjusting hole, the screw is inserted into the corresponding threaded hole of the front leg 11 from the first adjusting hole 211, the screw is tightened to fix the front end of the seat 2 with the front leg 11, and at the moment, the fixation of the seat 2 in the height direction is realized; and the sitting height is at the lowest gear, so that the chair is suitable for children with small age or low height.

When the age of children is increased and the sitting height position needs to be adjusted to other gears, the screws fixed in the first adjusting hole 211 and the second adjusting hole 212 are firstly removed, and then the seat 2 is horizontally lifted to enable the first adjusting hole 211 and the second adjusting hole 212 to be respectively aligned with the threaded holes at the positions of different heights of the front leg 11 and the rear leg 12, so that the adjustment of different gears can be realized.

As shown in fig. 26 to 29, the adjustment of the seat depth of the present embodiment is realized by installing the front small hole or the rear small hole of the second adjusting hole 212 of the seat frame 21 in alignment with the threaded hole of the rear leg 12, respectively, and when the front small hole is installed in alignment with the threaded hole of the rear leg 12, the seat 2 is located at the rear, and the seat depth is deeper; when the rear aperture is aligned with the threaded hole in the rear leg 12, the seat 2 is positioned forward, with a shallower depth.

Above-mentioned adjusting method can adjust the seat when children's height changes and is showing relatively, when children's height changes not very much, only finely tune seat support 2 according to children's user demand can, consequently the utility model discloses set up and finely tune seat board adjustment mechanism 4 of sitting deeply promptly to the front and back position of seat support 2, as shown in fig. 4.

Specifically, the seat plate adjusting mechanism 4 includes a sliding seat 41, a base 42, and a hand-screw adjusting screw 43; the sliding seat 41 is fixedly arranged on the bottom surface of the seat plate 22, two sliding blocks 411 are respectively arranged on the left side and the right side of the sliding seat 41, the sliding blocks 411 protrude out of the side wall of the sliding seat 41 along the width direction, and the two sliding blocks 411 are arranged in tandem on the same side of the sliding seat 41.

As shown in fig. 4-13, the base 42 is disposed at the middle position of the seat frame 21 in the width direction, the front and rear ends of the base 42 are fixedly connected to the front and rear ends of the seat frame 21, and the base 42 is spaced from the two sides of the seat frame 21. The base 42 is provided with a bottom plate 421, the left side and the right side of the bottom plate 421 extend upwards to form side plates 422, the upper ends of the side plates 422 are bent towards the middle direction of the bottom plate 421 to form transverse plates 423, the transverse plates 423 are bent downwards to form limiting plates 424, a slide way 425 is formed between the limiting plates 424 and the bottom plate 421, two notches 426 for the sliding blocks 411 to enter the slide way 425 are reserved on the transverse plates 423 and the limiting plates 424, and the sliding blocks 411 can slide along the slide way 425 after entering the slide way 425 from the notches 426; in addition, a long waist hole 4211 is formed in the center of the bottom plate 421, a threaded connection hole 412 is formed in the bottom surface of the sliding seat 41, and a hand-screw type adjusting screw 43 penetrates through the long waist hole 4211 and is connected with the threaded connection hole 412.

The seat plate adjusting mechanism 4 of the present embodiment specifically adjusts the seat 2 in the following manner: when the chair is installed and an adult wants to finely adjust the chair seat 2 forward and backward according to the use requirement of a child, the hand-rotating adjusting screw 43 is rotated to just enable the sliding block 411 to move forward and backward along the sliding channel 425, at this time, the position of the sliding seat 41 is adjusted, the sliding seat 41 stops moving after the position of the seat plate 22 is adapted to the use requirement of the child, and the hand-rotating adjusting screw 43 is rotated to be abutted against the bottom plate 421, so that the relative fixation between the sliding seat 41 and the base 42 can be realized.

In addition, as shown in fig. 1, 14-18, 19, 20, 25-29, the present invention further provides a foot rest 5 between two front legs 11, wherein a plurality of foot rest mounting holes 51 are provided on the front legs 11 along the height direction, and 2 foot rest mounting holes 51 are provided in the present embodiment, so that the height of the foot rest 5 is adjustable, thereby being capable of adapting to the use requirements of children with different heights; after the pedals 5 are adjusted to a predetermined position in the height direction, both ends of the pedals 5 are fixed in the pedal mounting holes 51.

Specifically, as shown in fig. 1, 14-16, 21, and 25, pedal connectors are fixedly disposed at two ends of the pedal 5, each pedal connector is a folding lug 52, and includes a first ear plate 521 and a second ear plate 522, the first ear plate 521 is fixedly connected to the bottom surface of the pedal 5, a through hole 5221 is disposed on the second ear plate 522, and after the through hole 5221 of the second ear plate 522 is aligned with the pedal mounting hole 51 at the corresponding position of the front leg 11, the pedal knob 53 with a screw 531 is sequentially inserted into the through hole 5221 and the pedal mounting hole 51, so as to connect and fix the pedal 5 and the front leg 11.

More specifically, as shown in fig. 19 and 20, in the front-rear direction of the seat, one surface of the footrest 5 is designed in a convex arc shape, and the other surface of the footrest 5 is designed in a concave arc shape, which are respectively referred to as a convex surface 54 and a concave surface 55; as shown in fig. 14, 17, 25, 28 and 29, when the footrest 5 is needed, i.e., the footrest 5 is in use, the convex surface 54 is arranged at the front end, and the foot can be placed on the footrest 6, so that the comfort of the foot is increased; as shown in fig. 1, 15, 16, 18, 26, and 27, when the footrest 5 is not needed, that is, the footrest 5 is in the storage state, the recessed surface 55 is attached to the front end, and the space of the calf is prevented from being occupied.

Furthermore, as shown in fig. 1, 2, 14-18, 22, and 25-29, the present invention further includes a caster 6 mounted on the side of the lower end of the front leg 11, the caster 6 includes a wheel 61, a caster screw 62 and a decorative cover 63, a caster mounting hole 64 is provided on the side of the lower end of the front leg 11, the caster screw 62 is screwed to the caster mounting hole 64 during the installation, so as to fix the wheel 61 and the front leg 11, and finally the decorative cover 63 is covered.

Furthermore, the utility model discloses a lower extreme face of truckle 6 surpasss terminal surface under front leg 11 downwards. The caster wheels 6 are only added in front of the chair, because the chair has a certain dead weight, children are limited in height and strength, and when the chair without the caster wheels 6 is used, adults need to lift the chair and children need to try out a proper position in front of a desk, which is a troublesome thing for both adults and children; the front legs 11 are additionally provided with the casters 6, so that children with slightly larger feet can freely come in and go out of the learning desk by slightly leaning the chair; for children who are younger in age and cannot land, the adults can easily help the children to come in and go out of the learning desk only by slightly leaning forward the chair; meanwhile, the seat can not move like a pneumatic chair after being laid flat.

Furthermore, as shown in fig. 1-3, 14-18, and 22-29, the present invention further comprises a connecting rod 7 fixedly disposed between the front leg 11 and the rear leg 12, the connecting rod 7 is provided with a bar-shaped hole 71, a flexible carrying cloth 72 is horizontally disposed at the bottom of the seat, and the flexible carrying cloth 72 can be made of any one of non-woven fabric, chemical fiber cloth, or mesh fabric; the left end and the right end of the flexible carrying cloth 72 are both connected with cloth sleeves 73, the flexible carrying cloth 72 is arranged between the two connecting rods 7, and the cloth sleeves 73 penetrate through round bars 74 with the length larger than that of the strip-shaped holes 71 after penetrating through the strip-shaped holes 71, so that the cloth sleeves 73 cannot be separated from the strip-shaped holes 71; the bottom increases the cloth pocket and lets whole seat more flexible pleasing to the eye, has also increased the functionality simultaneously, and the cloth pocket can be put schoolbag, sport equipment, and light containing box class.

Further, as shown in fig. 23, the rear end of the flexible carrier cloth 72 is tied to a rear pull rod 75, the rear pull rod 75 is sandwiched between the two rear legs 12, and both ends of the rear pull rod 75 are connected and fixed to the two rear legs 12. This enhances the load bearing capacity and stability of the flexible carrier cloth 72.

Claims (14)

1. The utility model provides a chair, includes bilateral symmetry's chair leg and press from both sides seat support, the back of the chair between two chair legs, its characterized in that: the chair legs comprise front legs and rear legs, the front legs and the rear legs are obliquely arranged, a plurality of positioning holes which are distributed at intervals are respectively arranged on the front legs and the rear legs along the height direction, and a first adjusting hole and a second adjusting hole are respectively arranged on the left side and the right side of the chair seat along the length direction of the chair seat, wherein the first adjusting hole is a straight-line-shaped long hole; after the position of the chair seat is adjusted in the height direction and the front-back direction, the chair seat is fixed by inserting the fasteners into the first adjusting holes and the second adjusting holes respectively and screwing the fasteners into the positioning holes of the front leg and the rear leg.

2. The seat of claim 1, wherein: the second adjusting holes are at least two independent small holes which are arranged at intervals along the front-back direction of the chair seat.

3. The seat of claim 1, wherein: the locating hole is a threaded hole, and the fastener is a screw.

4. The seat according to claim 1, wherein: the positioning holes are formed in the inner side faces, opposite to the two front legs and the two rear legs, of the positioning holes.

5. The seat according to claim 1, 2 or 4, wherein: the chair seat comprises a seat frame and a seat plate arranged on the seat frame, and the first adjusting hole and the second adjusting hole are arranged on the left side and the right side of the seat frame.

6. The seat according to claim 5, wherein: the seat plate adjusting mechanism comprises a sliding seat, a base and a hand-rotating adjusting screw, wherein the base is arranged in the seat frame and is fixedly connected with the seat frame; the sliding seat is fixedly arranged on the bottom surface of the seat plate, and the left side and the right side of the sliding seat are respectively provided with a sliding block; the base is provided with a bottom plate, limiting plates are respectively and fixedly arranged above the left side and the right side of the bottom plate, a slide way is formed between each limiting plate and the bottom plate, a notch for the sliding block to enter the slide way is reserved on each limiting plate, and the sliding block can slide along the slide way after entering the slide way from the notch; the center of the bottom plate is provided with a long waist hole, the bottom surface of the sliding seat is provided with a threaded connecting hole, and the hand-turning adjusting screw penetrates through the long waist hole to be connected with the threaded connecting hole.

7. The seat according to claim 6, wherein: the bottom plate both sides upwards extend and have the curb plate, the curb plate upper end is bent to the bottom plate middle direction and is formed the diaphragm, the diaphragm is bent downwards again and is formed the limiting plate, the breach form on diaphragm and limiting plate.

8. The seat according to claim 6, wherein: the left side and the right side of the sliding seat are respectively provided with two sliding blocks, and the sliding blocks protrude out of the side wall of the sliding seat along the width direction; the two sliding blocks are arranged in tandem at the same side of the sliding seat; correspondingly, two notches are correspondingly arranged on the limiting plates on the left side and the right side of the bottom plate.

9. The seat according to claim 6, wherein: the seat frame is square, the base is arranged in the middle of the seat frame in the width direction, the front end and the rear end of the base are fixedly connected with the front end and the rear end of the seat frame, and the base is respectively spaced from the two sides of the seat frame.

10. The seat according to claim 1, wherein: a pedal is arranged between the two front legs, one surface of the pedal is in a front convex design and the other surface of the pedal is in a concave design in the front-back direction of the chair; a plurality of pedal mounting holes are formed in the front leg in the height direction, and after the pedals are adjusted to preset positions in the height direction, two ends of each pedal are fixed in the pedal mounting holes.

11. The seat according to claim 10, wherein: the pedal connecting piece is respectively fixedly arranged at two ends of the pedal and is a folding lug which comprises a first lug plate and a second lug plate, the first lug plate is fixedly connected with the pedal bottom surface, a through hole is formed in the second lug plate, and after the through hole of the second lug plate is aligned to a pedal mounting hole in the corresponding position of the front leg, a pedal knob with a screw rod penetrates through the pedal connecting piece to realize the connection and fixation of the pedal and the front leg.

12. The seat according to claim 1, wherein: only install the truckle at the front leg lower extreme, the truckle install in front leg lower extreme side, and the lower extreme face of truckle surpasss front leg lower extreme terminal surface downwards.

13. The seat according to claim 1, wherein: the connecting rods are fixedly arranged between the front legs and the rear legs, the bar-shaped holes are formed in the connecting rods, the flexible bearing cloth horizontally arranged is arranged at the bottom of the seat, the left end and the right end of the flexible bearing cloth are both connected with cloth sleeves, the flexible bearing cloth is arranged between the two connecting rods, and the cloth sleeves penetrate through the bar-shaped holes and then limit the positions.

14. The seat according to claim 13, wherein: the rear end of the flexible bearing cloth is tied on a rear pull rod, the rear pull rod is clamped between the two rear legs, and the two ends of the rear pull rod are fixedly connected with the two rear legs.

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