CN112932126A

CN112932126A - Improved household dining chair

Info

Publication number: CN112932126A
Application number: CN202110389408.2A
Authority: CN
Inventors: 周沛衡
Original assignee: Foshan Shunde Xinshitai Furniture Industry Co ltd
Current assignee: Shandong Dimei Furniture Co ltd
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2021-06-11
Anticipated expiration: 2041-04-12
Also published as: CN112932126B

Abstract

The invention discloses an improved household dining chair in the technical field of household dining chairs, which comprises a chair body, wherein the bottom of the chair body is fixedly connected with a U-shaped fixing plate, the inner side wall of the bottom of the U-shaped fixing plate is connected with a first step plate in a sliding manner, and the inner side wall of the first step plate is connected with a second step plate in a sliding manner; according to the invention, when a child needs to eat by using the household dining chair, the second step plate moves forwards by using the pull handle, the second step plate and the first step plate slide forwards to be unfolded, and the first step plate is positioned by using the positioning insertion plate, so that the first step plate and the second step plate are prevented from sliding in the using process, the stability of the chair body is ensured, and the child can use the dining chair more safely.

Description

Improved household dining chair

Technical Field

The invention relates to the technical field of household dining chairs, in particular to an improved household dining chair.

Background

The dining chair is a seat with a backrest and armrests, is used for sitting on the ground in ancient times, has no chair originally, is named as wood, is used as a seat for modern families to eat, and has the characteristics of comfort and convenience.

The prior art discloses a part of patents in the aspect of CN201810662796.5, and Chinese patent with patent application number CN201810662796.5 discloses a household dining chair, which comprises a dining chair main body, armrests and a cushion, wherein one side and the other side of the front of a supporting main frame are fixedly connected with the armrests, the bottom of each armrest is fixedly connected with the cushion, the front of an opening is movably connected with an extending plate, the extending plate is connected with a gasket in a nested manner through the opening, the bottoms of supporting legs are fixedly connected with anti-wear pads, and the number of the anti-wear pads is four.

The prior art is that each family uses the same type of dining chair, i.e. the shape of the dining chair is the same, and most dining chairs are higher than the ground to meet the needs of adults, thus not using the dining chair every time children eat, and making the children have inconvenience to eat.

Based on the above, the present invention provides an improved dining chair for home use, which solves the above problems.

Disclosure of Invention

The invention aims to provide an improved household dining chair, which solves the problems that the household dining chairs used by each family in the prior art are basically of the same type, namely the household dining chairs are in the same shape, most of the household dining chairs are higher away from the ground to meet the needs of adults, and the dining chairs are not used for children each time, so that the children are inconvenient to eat.

In order to achieve the purpose, the invention provides the following technical scheme: an improved household dining chair comprises a chair body, wherein a U-shaped fixing plate is fixedly connected to the bottom of the chair body, a first step plate is slidably connected to the inner side wall of the bottom of the U-shaped fixing plate, a second step plate is slidably connected to the inner side wall of the first step plate, a protection plate is fixedly connected to the tops of the first step plate and the second step plate, a first stop block is fixedly connected to the bottom of the U-shaped fixing plate, a pull handle is fixedly connected to the front side wall of the second step plate, positioning mechanisms for positioning the protection plate are respectively connected to the U-shaped fixing plate and the outer side wall of the first step plate, guide sliding sleeves are respectively fixedly connected to the rear side walls of two legs at the front side of the bottom of the chair body, sliding legs are slidably connected to the inside of the guide sliding sleeves, anti-skid blocks are respectively fixedly connected to the bottoms of the two sliding legs, and a first connecting plate is fixedly, the outer side walls of the two first connecting plates are fixedly connected with first connecting blocks, the bottoms of the two first connecting blocks are fixedly connected with air springs, the bottom ends of the air springs are fixedly connected to the outer side walls of the sliding legs, the top ends of the two sliding legs are fixedly connected with a pulling plate together, the bottom of the pulling plate is fixedly connected with first pull ropes, the rear side walls of the two legs at the front side of the seat body are fixedly connected with L-shaped supporting frames, a first rotating rod is rotatably connected between the two L-shaped supporting frames together, the first rotating rod is fixedly connected with two first guide wheels which are symmetrically arranged, the bottom of the second step plate is fixedly connected with two second connecting blocks, and the bottom ends of the two first pull ropes are fixedly connected to the rear side walls of the second connecting blocks around the first guide wheels;

the positioning mechanism comprises a positioning plug board, one end of the positioning plug board penetrates through the U-shaped fixing plate and is in sliding connection with the U-shaped fixing plate, the other end of the positioning plug board is fixedly connected with a second connecting plate, a first spring is fixedly connected between the second connecting plate and the U-shaped fixing plate together, blocking blocks are fixedly connected to the upper side wall and the lower side wall of the positioning plug board respectively, the blocking blocks are in contact with the outer side wall of the U-shaped fixing plate, extrusion grooves are formed in the left side and the right side of the protection plate respectively, and the extrusion grooves are used for;

when the household dining chair works, because the household dining chairs used by each family in the prior art are basically of the same type, namely the shape of the household dining chairs is the same, most household dining chairs are higher away from the ground to meet the needs of adults, and the dining chairs are not used by children each time, so that the children have inconvenience in eating, the invention provides a technical scheme for solving the problems, when the household dining chair is used, a first step plate and a second step plate are positioned at the bottom of a chair body, when the children need to eat by using the household dining chair, the second step plate is pulled by pulling a handle to slide forwards along the inner side of the first step plate, when the second step plate slides forwards, a protection plate is driven to move forwards, when an extrusion groove at the front side of the protection plate is contacted with a positioning insertion plate, the positioning insertion plate is extruded to move outwards, a first spring is stretched, so that the protection plate can pass through the positioning insertion plate, when the protection plate moves forwards and moves away from the positioning insertion plate, the protection plate is abutted by the first stop block, meanwhile, the positioning insertion plate is tensioned by the first spring and slides into the inner side of the second step plate again, the protection plate and the second step plate are positioned to prevent the second step plate from sliding when being used by a person, then, the pulling handle is continuously pulled outwards, the protection plate extrudes the first stop block to drive the first step plate above the protection plate to slide forwards along the U-shaped fixing plate, the action of the second step plate is repeated, the first step plate is pulled to extend to form a climbing ladder with the second step plate, so that a child can sit on the household dining chair for dining by himself from the top of the extended first step plate and the top of the extended second step plate, and when the protection plate at the rear part of the second step plate moves forwards, the first pull rope is pulled through the second connecting block to enable the pull plate to move downwards to drive the two sliding support legs to slide downwards along the guide sliding sleeves, the sliding support legs extend out and are supported at the front side of the dining seat, so that the phenomenon that dining steps fall down when a child ascends by using the first step plate and the second step plate is avoided, the overall stability of the dining seat is ensured, after dining is finished, the first step plate and the second step plate need to be retracted to the lower side of the seat body to avoid occupying large space, the positioning insertion plate is driven to move outwards by pulling the second connecting plate at the outer side of the first step plate to separate the positioning insertion plate from the protection plate, the protection plate can move backwards at the moment, then the second step plate is pushed backwards by the pulling handle to slide into the bottom of the first step plate, in addition, when the second step plate and the protection plate move backwards, the tensioning on the first pull rope is released, the two sliding support legs are slowly retracted into the seat body under the action of the air spring, and the occupation space of the sliding support legs is avoided, then, the second connecting plates at two sides of the U-shaped fixing plate at the top are pulled to enable the two positioning insertion plates at the top to be separated from the protection plate of the first step plate, the second step plate is continuously pushed backwards, the second step plate drives the first step plate to move backwards together, and finally returns to the original position, so that the first step plate and the second step plate are completely collected into the bottom of the seat body to avoid occupying more space, therefore, when a child needs to eat by using the household dining chair, the second step plate is moved forwards by using the pulling handle, extruded and passes through the positioning insertion plates to be finally positioned by the positioning insertion plates, and then continuously pulled forwards, the second step plate drives the first step plate to slide forwards along the U-shaped fixing plate by using the first stop block, and similarly, the first step plate is positioned by using the positioning insertion plates to avoid the first step plate and the second step plate from sliding in the using process, and the safety of the whole equipment is ensured, and when the second step plate moves forward, the first pull rope is pulled to drive the pull plate and the two sliding support legs to extend out of the front side of the seat body, the pull plate and the two sliding support legs are supported at the bottoms of the two step plates and form a whole with the seat body, the situation that the seat body is toppled when the two step plates are used for going upwards is avoided, the stability of the seat body is ensured, and the dining seat is safer when a child uses the dining seat.

As a further scheme of the invention, a first L-shaped toothed plate is fixedly connected to each of the two rear side walls of the second connecting plate on the left side, a second L-shaped toothed plate is fixedly connected to each of the two rear side walls of the second connecting plate on the right side, the second L-shaped toothed plate is positioned on the front side of the first L-shaped toothed plate, third connecting blocks are fixedly connected to each of the U-shaped fixing plate and the rear side wall of the first step plate, second rotating rods are rotatably connected to the bottoms of the two third connecting blocks, gears are fixedly connected to the outer surfaces of the two second rotating rods, and the gears are meshed with the first L-shaped toothed plate and the second L-shaped toothed plate; when the two positioning inserting plates are pulled out simultaneously, the two positioning inserting plates are separated from the protection plate, the two hands of a person are required to be operated simultaneously, the person is inconvenient to push the second step plate, when the positioning inserting plates are pulled out at each time, the second connecting plate on one side is pulled by one hand to move the second connecting plate outwards to drive the first L-shaped toothed plate to move outwards simultaneously, the first L-shaped toothed plate is reversed by a gear to move the second L-shaped toothed plate to the other side, the second L-shaped toothed plate drives the second connecting block fixedly connected with the second L-shaped toothed plate to move outwards simultaneously, so that when any one of the two second connecting plates in the same group is pulled, the other one of the two second connecting plates in the same group can be driven simultaneously to move, the two second connecting blocks in the same group can drive the two positioning inserting plates to move outwards simultaneously to separate from the protection plate, the two hands of the person are prevented from operating the, is convenient and quick.

As a further scheme of the invention, two second pull ropes are fixedly connected to the rear side wall of the upper protection plate, a third rotating rod is connected to the inner side walls of the two first connecting plates in a rotating mode, two second guide wheels are fixedly connected to the outer surface of the third rotating rod, an L-shaped fixing frame is fixedly connected between two supporting legs at the rear side of the seat body and two L-shaped supporting frames, a fourth rotating rod is connected between the two L-shaped fixing frames in a rotating mode, two third guide wheels are fixedly connected to the outer surface of the fourth rotating rod, a stabilizing plate is fixedly connected between two supporting legs at the rear side of the bottom of the seat body, the rear ends of the two second pull ropes bypass the second guide wheels and the third guide wheels and penetrate through the stabilizing plate, a baffle disc is fixedly connected to the rear ends of the two second pull ropes, and two second springs are fixedly connected between the baffle disc and the stabilizing plate, the two second springs are respectively sleeved on the outer surfaces of the two second pull ropes; the during operation, because first step board and second step board are in unsettled state, for the steadiness of guaranteeing the seat body, avoid the seat to appear the phenomenon of overturning, second stay cord through fixed connection on the guard plate rear side wall at top, when first step board and guard plate move to the front side at every turn, pull earlier the fender dish through the second stay cord and move forward, compress the second spring, after the second spring is compressed to the certain degree, the fender dish that the second stay cord drove begins two landing legs in rear of taut seat body bottom, the seat body that makes slopes forward when originally being used by personnel and can cushion, and there is elasticity in the second stay cord, last the side move in-process forward at the guard plate, the second stay cord is to steadiness board and tensioning force bigger and bigger, make this physical stamina of seat more firm, guarantee the child safety when using the dining seat.

As a further scheme of the invention, the top ends of the two sliding support legs are fixedly connected with an insertion block, the bottom of the first connecting plate is provided with an insertion port, and the insertion block is used for inserting the insertion port to be in butt joint with the first connecting plate when the sliding support legs retract; the during operation, when the landing leg withdraws into the seat body owing to the slip landing leg, the seat body lacks the support of two slip landing legs, can reduce its holistic firm, through at slip landing leg top fixedly connected with grafting piece, when slip landing leg withdrawal seat body bottom, the grafting piece that slip landing leg drove its top is pegged graft in the inside of first connecting plate, can and first connecting plate and seat plate body between form the triangle-shaped, strengthens the intensity of seat body, avoids the seat to be damaged by the heavy object extrusion.

As a further scheme of the invention, anti-skid grooves are formed at the tops of the first step plate and the second step plate; the during operation, because the child is when using first step board and second step board to rise, food waste may remain at first step board and second step board top, easily leads to the child to slide, through having seted up anti-skidding groove at first step board and second step board top, utilizes anti-skidding groove to strengthen the frictional force of child and first step board and second step board, avoids the child to slide when using first step board and second step board.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention utilizes the drawing handle to lead the second step plate to move forwards and extrude and cross the positioning insertion plate to be finally positioned by the positioning insertion plate when a child needs to eat by using the household dining chair, then continuously pulling forwards, the second step plate drives the first step plate to slide forwards along the U-shaped fixing plate through the first stop block, and similarly, the first step plate is positioned by the positioning insertion plate, so that the first step plate and the second step plate are prevented from sliding in the use process, the safety of the whole equipment is ensured, when the second step plate moves forwards, the first pull rope is pulled to drive the pull plate and the two sliding support legs to extend out to the front side of the seat body and be supported at the bottom of the two step plates, and form a whole with the seat body, avoid the seat body to take place to empty when using two step boards to go upward, guarantee the stability of seat body, it is safer when making the child use the dining seat.

2. According to the invention, when the positioning plugboard needs to be pulled out each time, only one hand is needed to pull the second connecting plate on one side, so that the second connecting plate moves outwards, the first L-shaped rack plate is driven to move outwards at the same time, the first L-shaped rack plate is reversed through the gear, the second L-shaped rack plate is driven to move towards the other side, the second L-shaped rack plate drives the second connecting block fixedly connected with the second L-shaped rack plate to move outwards at the same time, so that when any one of the two second connecting plates in the same group is pulled, the other one of the two second connecting plates can be driven to move at the same time, the two positioning plugboards in the same group can be driven to move outwards to separate from the protection plate, the two step boards can be retracted by a single person through operating the second connecting plates.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a first perspective view of the general construction of the present invention;

FIG. 2 is a second perspective view of the general construction of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

FIG. 4 is a third perspective view of the general structure of the present invention (hiding the first connecting plate, the L-shaped fixing frame and the second pulling rope);

FIG. 5 is a fifth perspective view of the general construction of the present invention;

FIG. 6 is a schematic view of the first step floor and fender of the invention when retracted;

FIG. 7 is a schematic view of the first step floor and fender of the invention when deployed;

FIG. 8 is a schematic view of a first step plate structure of the present invention;

fig. 9 is an enlarged view of the structure at B in fig. 8.

In the drawings, the components represented by the respective reference numerals are listed below:

the seat comprises a seat body 1, a U-shaped fixing plate 2, a first step plate 3, a second step plate 4, a protection plate 5, a first stop block 6, a drawing handle 7, a guide sliding sleeve 8, a sliding leg 9, an anti-skidding block 10, a first connecting plate 11, a first connecting block 12, a gas spring 13, a drawing plate 14, a first pull rope 15, an L-shaped support frame 16, a first rotating rod 17, a first guide wheel 18, a second connecting block 19, a positioning insertion plate 20, a second connecting plate 21, a first spring 22, a blocking block 23, an extrusion groove 24, a first L-shaped toothed strip plate 25, a second L-shaped toothed strip plate 26, a third connecting block 27, a second rotating rod 28, a gear 29, a second pull rope 30, a third rotating rod 31, a second guide wheel 32, an L-shaped fixing frame 33, a fourth rotating rod 34, a third guide wheel 35, a stabilizing plate 36, a blocking disc 37, a second spring 38, an insertion block 39, an insertion port 40 and an anti-skidding groove 41.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, the present invention provides a technical solution: an improved household dining chair comprises a chair body 1, wherein the bottom of the chair body 1 is fixedly connected with a U-shaped fixing plate 2, the inner side wall of the bottom of the U-shaped fixing plate 2 is connected with a first step plate 3 in a sliding manner, the inner side wall of the first step plate 3 is connected with a second step plate 4 in a sliding manner, the tops of the first step plate 3 and the second step plate 4 are both fixedly connected with a protection plate 5, the bottom of the U-shaped fixing plate 2 is fixedly connected with a first stop 6, the front side wall of the second step plate 4 is fixedly connected with a pull handle 7, the outer side walls of the U-shaped fixing plate 2 and the first step plate 3 are both connected with a positioning mechanism for positioning the protection plate 5, the rear side walls of two legs at the front side of the bottom of the chair body 1 are both fixedly connected with guide sliding sleeves 8, sliding legs 9 are slidably connected inside the guide sliding sleeves 8, the bottoms of the two sliding legs 9 are both fixedly, the outer side walls of the two first connecting plates 11 are fixedly connected with first connecting blocks 12, the bottoms of the two first connecting blocks 12 are fixedly connected with air springs 13, the bottom ends of the air springs 13 are fixedly connected to the outer side walls of the sliding support legs 9, the top ends of the two sliding support legs 9 are fixedly connected with pull plates 14 together, the bottoms of the pull plates 14 are fixedly connected with first pull ropes 15, the rear side walls of the two support legs at the front side of the seat body 1 are fixedly connected with L-shaped support frames 16, a first rotating rod 17 is rotatably connected between the two L-shaped support frames 16 together, the first rotating rod 17 is fixedly connected with two first guide wheels 18 which are symmetrically arranged, the bottom of the second step plate 4 is fixedly connected with two second connecting blocks 19, and the bottom ends of the two first pull ropes 15 are fixedly connected to the rear side walls of the second connecting blocks 19 by;

the positioning mechanism comprises a positioning insertion plate 20, one end of the positioning insertion plate 20 penetrates through the U-shaped fixing plate 2 and is in sliding connection with the U-shaped fixing plate, the other end of the positioning insertion plate 20 is fixedly connected with a second connecting plate 21, a first spring 22 is fixedly connected between the second connecting plate 21 and the U-shaped fixing plate 2 together, blocking blocks 23 are fixedly connected to the upper side wall and the lower side wall of the positioning insertion plate 20 respectively, the blocking blocks 23 are in contact with the outer side wall of the U-shaped fixing plate 2, extrusion grooves 24 are formed in the left side and the right side of the protection plate 5 respectively;

in operation, since the prior art household dining chairs used by each family are basically of the same type, namely, the shape of the household dining chair is the same, most of the prior art household dining chairs are higher away from the ground to meet the needs of adults, and children are not required to use the dining chair each time, so that the children have inconvenience in eating, the invention provides a technical scheme for solving the above problems, when the invention is used, the first step plate 3 and the second step plate 4 are positioned at the bottom of the seat body 1, when the children need to eat by using the household dining chair, the second step plate 4 is pulled by pulling the handle to slide forwards along the inner side of the first step plate 3, when the second step plate 4 slides forwards, the second step plate 5 is driven to move forwards, when the extrusion groove 24 at the front side of the protection plate 5 is contacted with the positioning insertion plate 20, the positioning insertion plate 20 is extruded, so that the positioning insertion plate 20 moves outwards to stretch the first spring 22, so that the protection plate 5 can pass through the positioning insertion plate 20, when the protection plate 5 moves forwards to move to be separated from the positioning insertion plate 20, the protection plate 5 is supported by the first stop 6, meanwhile, the positioning insertion plate 20 is tensioned by the first spring 22 and slides into the inner side of the second step plate 4 again, the protection plate 5 and the second step plate 4 are positioned to prevent the second step plate 4 from sliding when a person uses the chair, then, the pull handle 7 is pulled outwards continuously, the protection plate 5 extrudes the first stop 6 to drive the first step plate 3 above the first stop to slide forwards along the U-shaped fixing plate 2, the action of the second step plate 4 is repeated, the first step plate 3 is pulled to extend to form a climbing ladder with the second step plate 4, so that a child can sit on a household dining chair for dining from the top of the extended first step plate 3 and the top of the second step plate 4 by himself, and when the protection plate 5 behind the second step plate 4 moves forwards, the first pull rope 15 is pulled through the second connecting block 19 to enable the pull plate 14 to move downwards to drive the two sliding support legs 9 to slide downwards along the guide sliding sleeves 8, so that the sliding support legs 9 extend out to be supported at the front side of the dining chair, the phenomenon that a dining ladder falls down when a child uses the first step plate 3 and the second step plate 4 to be prevented, the integral stability of the dining chair is ensured, after the dining is finished, the first step plate 3 and the second step plate 4 need to be retracted to the lower side of the chair body 1 to avoid occupying a large space, the second connecting plate 21 at the outer side of the first step plate 3 is pulled to drive the positioning insertion plate 20 to move outwards to separate the positioning insertion plate 20 from the protection plate 5, the protection plate 5 can move backwards at the moment, then the second step plate 4 is pushed backwards through the pull handle 7 to enable the second step plate 4 to slide into the bottom of the first step plate 3, and, when the second step 4 and the protection plate 5 move to the rear side, the tension to the first pull rope 15 is released, the two sliding legs 9 are slowly drawn into the seat body 1 under the action of the gas spring 13 to avoid the space occupied by the sliding legs 9, then the second connecting plates 21 at the two sides of the U-shaped fixing plate 2 at the top are pulled to separate the two positioning insertion plates 20 at the top from the protection plate 5 of the first step 3, the second step 4 is continuously pushed backwards, the second step 4 drives the first step 3 to move to the rear side together, and finally returns to the original position, so that the first step 3 and the second step 4 are completely drawn into the bottom of the seat body 1 to avoid occupying more space, thereby realizing that when a child needs to use the household dining chair to eat every time, the second step 4 moves forwards by using the pull handle 7, extrudes and passes over the positioning insertion plates 20, and finally is positioned by the positioning insertion plates 20, then continue to stimulate forward, second step board 4 drives first step board 3 through first dog 6 and slides along U type fixed plate 2 forward, the same thing, utilize location picture peg 20 to fix a position first step board 3, avoid first step board 3 and second step board 4 to slide in the use, guarantee the security of whole equipment, and when second step board 4 moves forward, the first stay cord 15 of pulling drives pull board 14 and two slip landing legs 9 and stretches out to the front side of seat body 1, support in the bottom of two step boards, and form a whole with seat body 1, avoid seat body 1 to take place to empty when using two step boards to go upward, guarantee seat body 1's stability, it is safer when making the child use the seat of having dinner.

As a further scheme of the present invention, the rear side walls of the two second connecting plates 21 on the left side are fixedly connected with a first L-shaped toothed plate 25, the rear side walls of the two second connecting plates 21 on the right side are fixedly connected with a second L-shaped toothed plate 26, the second L-shaped toothed plate 26 is located at the front side of the first L-shaped toothed plate 25, the rear side walls of the U-shaped fixing plate 2 and the first step plate 3 are fixedly connected with third connecting blocks 27, the bottoms of the two third connecting blocks 27 are rotatably connected with second rotating rods 28, the outer surfaces of the two second rotating rods 28 are fixedly connected with gears 29, and the gears 29 are engaged with the first L-shaped toothed plate 25 and the second L-shaped toothed plate 26; when the two positioning insertion plates 20 are required to be pulled out simultaneously and separated from the protection plate 5 at each time, a person needs to operate both hands simultaneously, the person is not convenient to push the second step plate 4, when the positioning insertion plates 20 are required to be pulled out at each time, the second connecting plate 21 on one side is pulled by only one hand to move towards the outer side, the first L-shaped toothed plate 25 is driven to move towards the outer side simultaneously, the first L-shaped toothed plate 25 is reversed through the gear 29, the second L-shaped toothed plate 26 moves towards the other side, the second L-shaped toothed plate 26 drives the second connecting block 19 fixedly connected with the second L-shaped toothed plate 26 to move towards the outer side simultaneously, so that when any one of the two second connecting plates 21 in the same group is pulled, the other one of the two second connecting blocks 19 in the same group can be driven simultaneously to move, the two positioning insertion plates 20 can be driven simultaneously to move towards the outer, avoid personnel's both hands operation second connecting plate 21 for a single can withdraw two ladder boards, convenient and fast.

As a further proposal of the invention, two second pull ropes 30 are fixedly connected on the rear side wall of the upper protection plate 5, a third rotating rod 31 is fixedly connected on the inner side wall of the two first connecting plates 11 in a common rotating way, two second guide wheels 32 are fixedly connected on the outer surface of the third rotating rod 31, an L-shaped fixing frame 33 is fixedly connected between the two legs at the rear side of the seat body 1 and the two L-shaped supporting frames 16 in a common rotating way, a fourth rotating rod 34 is rotatably connected between the two L-shaped fixing frames 33 in a common rotating way, two third guide wheels 35 are fixedly connected on the outer surface of the fourth rotating rod 34, a stabilizing plate 36 is fixedly connected between the legs at the rear side of the bottom of the seat body 1 in a common way, the rear ends of the two second pull ropes 30 pass around the second guide wheels 32 and the third guide wheels 35 and penetrate through the stabilizing plate 36, a baffle disc 37 is fixedly connected at the rear ends of the two second pull ropes 30, and two second, the two second springs 38 are respectively sleeved on the outer surfaces of the two second pull ropes 30; when in work, because the first step plate 3 and the second step plate 4 are in a suspended state, in order to ensure the stability of the seat body 1 and avoid the seat from turning over, the second pull rope 30 is fixedly connected on the rear side wall of the protection plate 5 at the top, at each time of the forward movement of the first step floor 3 and the shielding plate 5, the catch plate 37 is first pulled by the second rope 30 to move forward, the second spring 38 is compressed, when the second spring 38 is compressed to a certain degree, the blocking disc 37 driven by the second pull rope 30 starts to pull the two rear legs at the bottom of the seat body 1, so that the forward inclination of the seat body 1 originally used by a person is buffered, and the second pull rope 30 has elasticity, in the process that the protection plate 5 continuously moves towards the front side, the second pull rope 30 has larger and larger tension force on the stabilizing plate 36, so that the seat body 1 can be more stable, and the safety of a child when the child uses the dining seat is ensured.

As a further scheme of the invention, the top ends of the two sliding support legs 9 are fixedly connected with an insertion block 39, the bottom of the first connecting plate 11 is provided with an insertion port 40, and the insertion block 39 is used for being inserted into the insertion port 40 to be butted with the first connecting plate 11 when the sliding support legs 9 retract; the during operation, because slide leg 9 retracts during seat body 1, seat body 1 lacks two slide leg 9's support, can reduce its holistic firm, through inserting piece 39 at 9 top fixedly connected with of slide leg, when slide leg 9 retracts seat body 1 bottom, slide leg 9 drives the inside at first connecting plate 11 of the grafting piece 39 grafting at its top, can with form the triangle-shaped between first connecting plate 11 and the seat plate body, strengthen seat body 1's intensity, avoid the seat to be damaged by the heavy object extrusion.

As a further scheme of the invention, anti-skid grooves 41 are formed at the tops of the first step plate 3 and the second step plate 4; during operation, because the child is when using first step board 3 and second step board 4 to rise, food waste may remain at first step board 3 and second step board 4 top, easily leads to the child to slide down, through having seted up anti-skidding groove 41 at first step board 3 and second step board 4 top, utilize anti-skidding groove 41 to strengthen the frictional force of child and first step board 3 and second step board 4, avoid the child to slide down when using first step board 3 and second step board 4.

The working principle is as follows: when the invention is used, the first step plate 3 and the second step plate 4 are positioned at the bottom of the seat body 1, when a child needs to use the household dining chair to eat, the child pulls the second step plate 4 to slide forwards along the inner side of the first step plate 3 by pulling the handle, when the second step plate 4 slides forwards, the protection plate 5 is driven to move forwards, when the extrusion groove 24 at the front side of the protection plate 5 is contacted with the positioning insertion plate 20, the positioning insertion plate 20 is extruded to enable the positioning insertion plate 20 to move outwards, the first spring 22 is stretched, the protection plate 5 can pass through the positioning insertion plate 20, when the protection plate 5 moves forwards and is separated from the positioning insertion plate 20, the protection plate 5 is supported by the first stop 6, meanwhile, the positioning insertion plate 20 is tensioned by the first spring 22 to slide into the inner side of the second step plate 4 again, the protection plate 5 and the second step plate 4 are positioned, and the second step plate 4 is prevented from sliding when the child uses, then, the pulling handle 7 is pulled outwards continuously, the protection plate 5 extrudes the first stop 6 to drive the first step plate 3 above the first stop to slide forwards along the U-shaped fixing plate 2, the action of the second step plate 4 is repeated, the first step plate 3 is pulled to extend and form a climbing ladder with the second step plate 4, so that a child can sit on the household dining chair for dining from the top of the extended first step plate 3 and the top of the extended second step plate 4, and when the protection plate 5 behind the second step plate 4 moves forwards, the first pull rope 15 is pulled through the second connecting block 19 to drive the pulling plate 14 to move downwards, the two sliding legs 9 are driven to slide downwards along the guide sliding sleeves 8, the sliding legs 9 extend out and are supported at the front side of the dining chair, the phenomenon that the dining ladder falls down when the child ascends by using the first step plate 3 and the second step plate 4 is avoided, and the overall stability of the dining chair is ensured, after dining is finished, the first step board 3 and the second step board 4 are required to be retracted to the lower part of the seat body 1 to avoid occupying large space, the positioning insertion board 20 is driven to move outwards by pulling the second connecting board 21 at the outer side of the first step board 3 to separate the positioning insertion board 20 from the protection board 5, the protection board 5 can move towards the rear side at the moment, then the second step board 4 is pushed towards the rear side by the drawing handle 7 to enable the second step board 4 to slide into the bottom of the first step board 3, in addition, when the second step board 4 and the protection board 5 move towards the rear side, the tensioning of the first pull rope 15 is released, the two sliding support legs 9 are slowly retracted into the seat body 1 under the action of the air spring 13 to avoid occupying space of the sliding support legs 9, then, the second connecting boards 21 at the two sides of the U-shaped fixing board 2 at the top are pulled to enable the two positioning insertion boards 20 at the top to separate from the protection board 5 of the first step board 3, continue to promote second step board 4 backward, second step board 4 drives first step board 3 and together moves to the rear side, finally gets back to the normal position for first step board 3 and second step board 4 are taken in seat body 1 bottom completely, avoid taking more space.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to 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.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An improved generation family dining chair, includes seat body (1), its characterized in that: the seat is characterized in that a U-shaped fixing plate (2) is fixedly connected to the bottom of the seat body (1), a first step plate (3) is slidably connected to the inner side wall of the bottom of the U-shaped fixing plate (2), a second step plate (4) is slidably connected to the inner side wall of the first step plate (3), a protection plate (5) is fixedly connected to the tops of the first step plate (3) and the second step plate (4), a first stop block (6) is fixedly connected to the bottom of the U-shaped fixing plate (2), a pull handle (7) is fixedly connected to the front side wall of the second step plate (4), positioning mechanisms for positioning the protection plate (5) are connected to the outer side wall of the U-shaped fixing plate (2) and the first step plate (3), guide sliding sleeves (8) are fixedly connected to the rear side walls of two legs at the front side of the bottom of the seat body (1), and sliding legs (9) are slidably connected to the inside of the, the bottom of each of the two sliding support legs (9) is fixedly connected with an anti-skid block (10), a first connecting plate (11) is fixedly connected between the front supporting leg and the rear supporting leg of the seat body (1) together, a first connecting block (12) is fixedly connected to the outer side wall of the two first connecting plates (11), an air spring (13) is fixedly connected to the bottom of the two first connecting blocks (12), the bottom end of the air spring (13) is fixedly connected to the outer side wall of each sliding support leg (9), the top ends of the two sliding support legs (9) are fixedly connected with a pulling plate (14) together, a first pull rope (15) is fixedly connected to the bottom of the pulling plate (14), L-shaped support frames (16) are fixedly connected to the rear side walls of the two supporting legs at the front side of the seat body (1), and a first rotating rod (17) is rotatably connected between the two L-, two first leading wheels (18) which are symmetrically arranged are fixedly connected to the first rotating rod (17), two second connecting blocks (19) are fixedly connected to the bottom of the second step plate (4), and the bottom ends of the first pull ropes (15) are fixedly connected to the rear side wall of the second connecting blocks (19) by bypassing the first leading wheels (18).

2. An improved dining chair for home use as claimed in claim 1, wherein: positioning mechanism includes location picture peg (20), location picture peg (20) one end runs through U type fixed plate (2) and rather than sliding connection, the other end fixedly connected with second connecting plate (21) of location picture peg (20), second connecting plate (21) with common first spring of fixedly connected with (22) between U type fixed plate (2), equal fixedly connected with blocks piece (23) on the wall of both sides about location picture peg (20), block the lateral wall contact of piece (23) and U type fixed plate (2), extrusion groove (24) have all been seted up to guard plate (5) the left and right sides, extrusion groove (24) are used for extrusion location picture peg (20).

3. An improved dining chair for home use as claimed in claim 2, wherein: two on the left side equal fixedly connected with first L type rack board (25) on second connecting plate (21) rear wall, the right side is two equal fixedly connected with second L type rack board (26) on second connecting plate (21) rear wall, second L type rack board (26) are located the front side of first L type rack board (25), U type fixed plate (2) with equal fixedly connected with third connecting block (27), two on first step board (3) rear wall third connecting block (27) bottom all rotates and is connected with second bull stick (28), two equal fixedly connected with gear (29) on second bull stick (28) surface, gear (29) and first L type rack board (25) and second L type rack board (26) meshing.

4. An improved dining chair for home use as claimed in claim 1, wherein: two second pull ropes (30) are fixedly connected to the rear side wall of the upper protection plate (5), a third rotating rod (31) is connected to the inner side walls of the two first connecting plates (11) in a rotating mode, two second guide wheels (32) are fixedly connected to the outer surface of the third rotating rod (31), an L-shaped fixing frame (33) is fixedly connected between the two supporting legs of the rear side of the seat body (1) and the two L-shaped supporting frames (16) in a rotating mode, a fourth rotating rod (34) is connected between the two L-shaped fixing frames (33) in a rotating mode, two third guide wheels (35) which are symmetrically arranged are fixedly connected to the fourth rotating rod (34), a stabilizing plate (36) is fixedly connected between the two supporting legs of the rear side of the bottom of the seat body (1) in a rotating mode, and the rear ends of the two second pull ropes (30) pass through the second guide wheels (32) and the third guide wheels (35) and penetrate through the stabilizing plate (, two equal fixedly connected with fender dish (37) in second stay cord (30) rear end corresponds equal fixedly connected with second spring (38) jointly between fender dish (37) and steadying plate (36), two second spring (38) overlap respectively and are established on corresponding second stay cord (30).

5. An improved dining chair for home use as claimed in claim 1, wherein: two equal fixedly connected with in slip landing leg (9) top inserts piece (39), interface (40) have been seted up to first connecting plate (11) bottom, insert piece (39) are used for inserting interface (40) and first connecting plate (11) butt joint when slip landing leg (9) withdraw.

6. An improved dining chair for home use as claimed in claim 1, wherein: anti-skidding grooves (41) are formed in the tops of the first step plate (3) and the second step plate (4).