阅读说明：本技术 一种可调节高度的初中生课桌椅 (Height-adjustable junior school student desk and chair ) 是由 曹恒铱 于 2021-08-30 设计创作，主要内容包括：本发明涉及一种可调节高度的初中生课桌椅,其包括坐板和与坐板连接的靠背,坐板下方设置有底板,底板和坐板之间设置有调节机构和若干支撑机构,底板底部设有支腿；调节机构包括蜗杆,蜗杆底部延伸穿出底板与底板定位转动连接,并在穿出一端设置转动手柄,蜗杆周侧设置有若干支撑机构；支撑机构包括与蜗杆啮合的蜗轮,蜗杆的展开螺旋角小于蜗轮蜗杆接触的摩擦角,蜗轮的轴心处固定连接有第一连接杆,第一连接杆转动连接有第二连接杆,第二连接杆远离第一连接杆一端与底板固定连接,第一连接杆固定连接有支撑杆,支撑杆远离第一连接杆一端与坐板底部转动并滑动连接；本发明能够实现学生自行随时调节,使用方便,并且能够放置杂物。(The invention relates to a height-adjustable junior school desk and chair, which comprises a seat plate and a backrest connected with the seat plate, wherein a bottom plate is arranged below the seat plate, an adjusting mechanism and a plurality of supporting mechanisms are arranged between the bottom plate and the seat plate, and supporting legs are arranged at the bottom of the bottom plate; the adjusting mechanism comprises a worm, the bottom of the worm extends out of the bottom plate to be connected with the bottom plate in a positioning and rotating manner, a rotating handle is arranged at the end of the worm, and a plurality of supporting mechanisms are arranged on the periphery of the worm; the supporting mechanism comprises a worm wheel meshed with the worm, the unfolding spiral angle of the worm is smaller than the contact friction angle of the worm wheel and the worm, a first connecting rod is fixedly connected to the axis of the worm wheel, the first connecting rod is rotatably connected with a second connecting rod, one end, far away from the first connecting rod, of the second connecting rod is fixedly connected with the bottom plate, a supporting rod is fixedly connected with the first connecting rod, and one end, far away from the first connecting rod, of the supporting rod is rotatably and slidably connected with the bottom of the seat plate; the invention can realize the self-adjustment of students at any time, is convenient to use and can place sundries.)

1. The utility model provides a height-adjustable junior school student's desk chair, includes seat (2) and back (1) of being connected with seat (2), its characterized in that: a bottom plate (5) is arranged below the seat plate (2), an adjusting mechanism and a plurality of supporting mechanisms are arranged between the bottom plate (5) and the seat plate (2), and supporting legs (6) are arranged at the bottom of the bottom plate (5);

the adjusting mechanism comprises a worm (8), the bottom of the worm (8) extends out of the bottom plate (5) to be connected with the bottom plate (5) in a positioning and rotating mode, a rotating handle (7) is arranged at the end, penetrating out of the bottom plate, and a plurality of supporting mechanisms are arranged on the periphery of the worm (8);

the supporting mechanism comprises a worm wheel (9) meshed with a worm (8), the expansion spiral angle of the worm (8) is smaller than the friction angle of the worm wheel (9) and the worm (8) in contact, a first connecting rod (91) is fixedly connected to the axis of the worm wheel (9), the first connecting rod (91) is rotatably connected with a second connecting rod (92), one end of the second connecting rod (92) far away from the first connecting rod (91) is fixedly connected with a bottom plate (5), a supporting rod is fixedly connected with the first connecting rod (91), and one end of the supporting rod far away from the first connecting rod (91) is rotatably and slidably connected with the bottom of a seat plate (2).

2. A height adjustable junior school desk and chair as claimed in claim 1, wherein: the worm wheel (9) both sides axle center department fixedly connected with one head rod (91) respectively, head rod (91) are kept away from worm wheel (9) one end and are rotated and connect second connecting rod (92), the bracing piece respectively with two head rod (91) fixed connection of both sides.

3. A height adjustable junior school desk and chair as claimed in claim 1, wherein: the bracing piece includes first bracing piece (10) with head rod (91) fixed connection and can dismantle second bracing piece (11) of being connected with first bracing piece (10), second bracing piece (11) are kept away from first bracing piece (10) one end and are rotated and sliding connection bottom seat (2).

4. A height adjustable junior school desk and chair as claimed in claim 1, wherein: the seat is characterized in that one end, far away from the first connecting rod (10), of the supporting rod is rotatably connected with a roller (12), a slide way (13) matched with the roller (12) is arranged at the bottom of the seat plate (2), and the roller (12) is connected in the slide way (13) in a sliding mode.

5. The height-adjustable junior school desk and chair of claim 4, wherein: be close to both ends sliding connection in slide (13) and have dog (14), be provided with spring (15) between dog (14) and the corresponding one end in slide (13).

6. A height adjustable junior school desk and chair as claimed in claim 1, wherein: 4 groups of supporting mechanisms are arranged on the periphery of the worm (8) at equal intervals.

7. A height adjustable junior school desk and chair as claimed in claim 1, wherein: adjusting mechanism and supporting mechanism week side are provided with flexible check fender layer (3) of round, check fender layer (3) upper portion is connected with first connection piece (4), screw fixed connection is passed through with seat (2) in first connection piece (4), check fender layer (3) sub-unit connection second connection piece (41), screw fixed connection is passed through with bottom plate (5) in second connection piece (41).

8. The height-adjustable junior school desk and chair of claim 7, wherein: and a waterproof layer is arranged on the outer side of the lattice barrier layer (3).

Technical Field

The invention relates to the technical field of desk and chair, in particular to a height-adjustable junior school desk and chair.

Background

The traditional desk and chair usually has a telescopic structure arranged on the supporting legs, for example, two sections of supporting legs are arranged and provided with a plurality of fixing holes, and then different fixing holes on the two sections of supporting legs are fixed through bolts, so that the height can be adjusted.

Modern children have superior living conditions, the body development time is advanced, most children can meet the golden period of development in early childhood, the height of the children grows fast, and the children at the moment can simply operate and adjust the desk and chair, so that the children are more suitable for the height of the children and develop correct learning postures, and the traditional desk and chair cannot achieve the effect.

In addition, at present, campus facilities in junior high schools are different from those in junior high schools in certain places, playgrounds of most junior high schools are not provided with fixed viewing tables, when activities such as sports meetings are organized in schools, students are required to move own tables and chairs to the playgrounds for use, and existing school tables and chairs can only be used for sitting down and cannot be used for placing sundries, so that the school tables and chairs have a single function when being used as viewing chairs.

Disclosure of Invention

The invention provides a height-adjustable junior school desk and chair which is convenient for students to operate and adjust the height by themselves and can reasonably place sundries, and aims to solve the problems that the traditional school desk and chair is not convenient for the students to adjust the height by themselves, is not suitable for junior students with fast body development, can only provide sitting, cannot place sundries and has single function when being used as a watching chair.

In order to solve the technical problems, the invention adopts the following technical scheme: a height-adjustable junior school desk and chair comprises a seat plate and a backrest connected with the seat plate, wherein a bottom plate is arranged below the seat plate, an adjusting mechanism and a plurality of supporting mechanisms are arranged between the bottom plate and the seat plate, and supporting legs are arranged at the bottom of the bottom plate; the adjusting mechanism comprises a worm, the bottom of the worm extends out of the bottom plate to be connected with the bottom plate in a positioning and rotating mode, a rotating handle is arranged at one end of the worm, and a plurality of supporting mechanisms are arranged on the periphery of the worm; the supporting mechanism comprises a worm wheel meshed with the worm, the unfolding spiral angle of the worm is smaller than the friction angle of contact of the worm wheel and the worm, a first connecting rod is fixedly connected to the axis of the worm wheel, a second connecting rod is rotatably connected to the first connecting rod, one end, far away from the first connecting rod, of the second connecting rod is fixedly connected with the bottom plate, a supporting rod is fixedly connected with the first connecting rod, and one end, far away from the first connecting rod, of the supporting rod is connected with the bottom of the seat in a rotating and sliding mode.

Preferably, the axes of the two sides of the worm wheel are respectively and fixedly connected with a first connecting rod, one end, far away from the worm wheel, of each first connecting rod is rotatably connected with a second connecting rod, and the supporting rods are respectively and fixedly connected with the two first connecting rods on the two sides.

Preferably, the support rod comprises a first support rod fixedly connected with the first connecting rod and a second support rod detachably connected with the first support rod, and one end, far away from the first support rod, of the second support rod is connected with the bottom of the seat plate in a rotating and sliding manner.

Preferably, one end of the support rod, which is far away from the first connecting rod, is rotatably connected with a roller, a slide way matched with the roller is arranged at the bottom of the seat plate, and the roller is slidably connected in the slide way.

Preferably, a stop block is connected to the inner side of the slide way close to the two ends in a sliding manner, and a spring is arranged between the stop block and the corresponding end of the slide way.

Preferably, the group support mechanisms are arranged on the periphery of the worm at equal intervals.

Preferably, a circle of flexible lattice barrier is arranged on the peripheral sides of the adjusting mechanism and the supporting mechanism, a first connecting piece is connected to the upper portion of the lattice barrier, the first connecting piece is fixedly connected with the seat plate through screws, a second connecting piece is connected to the lower portion of the lattice barrier, and the second connecting piece is fixedly connected with the bottom plate through screws.

Preferably, a waterproof layer is arranged on the outer side of the lattice barrier layer.

Compared with the prior art, the height of the seat plate can be adjusted by controlling the rotating handle through the hand, self-locking can be realized between the worm wheel and the worm, other tools are not needed, the operation is simple, students can adjust the seat plate at any time, and the use is convenient; the invention adopts a double-layer structure of the seat plate and the bottom plate, and the top of the supporting plate can be used as a placing plate for placing articles, so that students can conveniently use the desk and chair when needing to use the desk and chair when participating in collective activities.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the connection between the worm and the support mechanism according to the present invention;

FIG. 3 is a schematic diagram of the specific structure at A in FIG. 2;

FIG. 4 is a schematic view of the structure of the slide of the present invention;

fig. 5 is a schematic diagram of a specific structure at B in fig. 4.

In the figure: 1. the seat comprises a backrest, a seat plate, a lattice blocking layer, a first connecting piece, a second connecting piece, a bottom plate, a rotating handle, a worm wheel, a first connecting rod, a second connecting rod, a supporting rod, a spring, a seat plate, a lattice blocking layer, a base plate, a rotating handle, a worm wheel, a connecting rod, a lattice blocking layer, a base plate, a rotating handle, a worm, a rotating handle, a rotating shaft, a rotating.

Detailed Description

As shown in fig. 1 to 5, a height-adjustable junior school desk and chair comprises a seat plate 2 and a backrest 1 connected with the seat plate 2, wherein a bottom plate 5 is arranged below the seat plate 2, and an adjusting mechanism and a plurality of supporting mechanisms are arranged between the bottom plate 5 and the seat plate 2; during the specific use, seat 2 is used for supporting the health, back 1 is used for relying on the health, bottom plate 5 highly keeps unchangeable, adjustment mechanism and supporting mechanism are used for adjusting the distance between seat 2 and the bottom plate 5 to realize adjusting the height of seat 2, thereby be applicable to the student of different heights and use, the surface of bottom plate 5 can be used for placing debris.

Adjustment mechanism includes worm 8, 8 bottoms of worm extend and wear out bottom plate 5 and be connected with 5 location rotations of bottom plate to wear out one end and set up turning handle 7, promptly 8 vertical settings of worm, and the bottom extends has one section smooth section, and bottom plate 5 is worn out to smooth section to rotate with bottom plate 5 in the week side with the 5 contacts of bottom plate and be connected, can control worm 8 and rotate through turning handle 7 in bottom plate 5 below during specific use.

A plurality of supporting mechanisms are arranged on the periphery of the worm 8, and supporting legs 6 are arranged at the bottom of the bottom plate 5; the legs 6 are used to support the entire device.

The supporting mechanism comprises a worm wheel 9 meshed with a worm 8, namely the worm wheel 9 is vertically arranged, the axis of the worm wheel 9 is horizontal, and the worm 8 can drive the worm wheel 9 to rotate.

The unfolding helical angle of the worm 8 is smaller than the friction angle of the worm wheel 9 and the worm 8; namely, the worm wheel 9 can be driven to move by the rotation of the worm 8, and the worm 8 cannot be driven to move by the rotation of the worm wheel 9, so that self-locking is realized.

The axle center of the worm wheel 9 is fixedly connected with a first connecting rod 91, the first connecting rod 91 is rotatably connected with a second connecting rod 92, one end, far away from the first connecting rod 91, of the second connecting rod 92 is fixedly connected with the bottom plate 5, namely, the worm wheel 9 is supported through the first connecting rod 91 and the second connecting rod 92, the position of the worm wheel 9 is fixed, the worm wheel 9 can only rotate, and the worm wheel 9 cannot fall off from the worm 8.

The first connecting rod 91 is fixedly connected with a supporting rod, and one end of the supporting rod, which is far away from the first connecting rod 91, is rotatably and slidably connected with the bottom of the seat plate 2; the bracing piece is used for connecting seat 2 and head rod 91, when worm wheel 9 rotated, drives head rod 91 and rotates, and then drives the bracing piece motion, and bracing piece inclination changes, keeps away from the high change that takes place of head rod 91 one end, changes with seat 2's contact position to change seat 2's height.

Preferably, the axes of the two sides of the worm wheel 9 are respectively and fixedly connected with a first connecting rod 91, one end of the first connecting rod 91, which is far away from the worm wheel 9, is rotatably connected with a second connecting rod 92, and further, the supporting rods are respectively and fixedly connected with the two first connecting rods 91 of the two sides, the two sides of the worm wheel 9 are stressed in a balanced manner, and the supporting effect is good.

Preferably, the support rods include a first support rod 10 fixedly connected with the first connecting rod 91 and a second support rod 11 detachably connected with the first support rod 10, and specifically, the first support rod 10 and the second support rod 11 can be detachably connected through bolts, one end of the second support rod 11, which is far away from the first support rod 10, is rotatably and slidably connected with the bottom of the seat plate 2, and when the first support rod 10 and the second support rod 11 are detached, the seat plate 2 and the bottom plate 5 can be detached, so that the adjusting mechanism therein can be repaired conveniently.

Preferably, the support rod is connected with a roller 12 in a rotating manner at one end far away from the first connecting rod 10, a slide 13 matched with the roller 12 is arranged at the bottom of the seat board 2, and the roller 12 is connected in the slide 13 in a sliding manner, so that one end of the support rod is connected with the seat board 2 in a sliding and rotating manner.

Preferably, be close to both ends sliding connection in the slide 13 and have dog 14, be provided with spring 15 between dog 14 and the corresponding one end in the slide 13, when the bracing piece is close to seat one end and moves slide 13 and be close to the tip, with the contact of dog 14, can receive certain pressure because spring 15's effect for control turning handle 7 is more hard, when the student adjusts fast, is convenient for remind the student to be about to adjust to furthest, control governing speed, protection architecture.

Preferably, 4 groups of supporting mechanisms are arranged on the periphery of the worm 8 at equal intervals, so that the balance stress bearing capacity is high.

Preferably, a circle of flexible lattice barrier layer 3 is arranged on the peripheral sides of the adjusting mechanism and the supporting mechanism, the upper part of the lattice barrier layer 3 is connected with a first connecting sheet 4, the first connecting sheet 4 is fixedly connected with the seat plate 2 through a screw, the lower part of the lattice barrier layer 3 is connected with a second connecting sheet 41, and the second connecting sheet 41 is fixedly connected with the bottom plate 5 through a screw; the material of check keep off layer 3 can be cloth or rubber for protection adjustment mechanism and supporting mechanism increase life, 3 both ends of check keep off layer can realize dismantling through first connection piece 4 and second connection piece 41 and seat 2 and bottom plate 5, do not influence the maintenance to adjustment mechanism and supporting mechanism promptly, need explain that corresponding fixed orifices should be seted up at first connection piece 4, second connection piece 41, seat 2 bottoms, bottom plate 5 top.

Preferably, the 3 outsides of check retaining layer are equipped with the waterproof layer, can realize waterproofly, when outdoor use or when having liquid to spill, can not drip adjustment mechanism and supporting mechanism on, effectively protect adjustment mechanism and supporting mechanism.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.