CN201861107U

CN201861107U - Desk and chair for students with limitless adjustment of lifting and falling

Info

Publication number: CN201861107U
Application number: CN2010205152224U
Authority: CN
Inventors: 赵贵忱
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-09-03
Filing date: 2010-09-03
Publication date: 2011-06-15
Anticipated expiration: 2020-09-03

Abstract

The utility model relates to a desk and a chair for students with limitless adjustment of lifting and falling, comprising a desk box and a chair surface. The desk and the chair are characterized in that upper angle iron is fixed at the middle of the front and rear long edges of the lower surfaces of the table box and the chair surface; positioning blocks are arranged at the middle of the right-angled inner sides of the two upper angle iron; the two ends of the positioning blocks are outwards welded with two upper sliding way ends vertically intersected with each other and U-shaped fixed grooves in sequence; the rear ends of the two lower sliding ways are vertically fixed with a lower long beam, and the front ends of the two lower sliding ways are welded with the two ends of lower angle iron welded with U-shaped fixed grooves; the fixed upper end and the fixed lower end of a hinged rod are respectively arranged in the upper U-shaped fixed groove and the lower U-shaped fixed groove by bolts; two ends of a central screw rod are arranged in central holes of the two vertical positioning blocks; the central screw rod is provided with two sliding blocks moving oppositely with each other; the two movable ends of the hinged rod are respectively arranged in the upper sliding ways; and the bolts pass through side wall holes of the upper sliding ways to be fixed with the two sliding blocks. With the design, the height adjustment of the desk and the chair can be guaranteed at any time and place, and the desk and the chair are convenient to operate, economic and practicable, simple in technique, and beneficial to being popularized.

Description

Stepless limit increases the chair and desk for pupils that falls

Technical field

The utility model relates to teaching facilities, the chair and desk for pupils of lift adjustment.

Student's most of the time is spent on desk, chair.Present desk and chair major part all is highly changeless, the minority height divide several grades adjustable, but it is cumbersome to regulate operation, complex manufacturing technology, quality and life-span be cannot say for sure card.Can not adapt to that student's height changes and the requirement of corresponding adjustment tables and chairs height makes tall person student bend over to lie prone hunchbackedly and writes on the table, if things go on like this, not only influence student eyesight, more can cause deformation of spinal column, consequence is very serious.

Summary of the invention

The purpose of this utility model provides a kind of stepless limit and increases the chair and desk for pupils that falls, and adjusts height whenever and wherever possible, and is easy to operate, economical and practical, technology simple, it is universal to be beneficial to.

Stepless limit increases the chair and desk for pupils that falls, comprise a case and seat, it is characterized in that middle part, a case and seat lower surface forward and backward two long limits is all being fixed goes up angle bar, all weld locating piece on two in the middle of the inboard, right angle of angle bar, two sliding way ends that the locating piece two ends intersect vertically to external welding successively and U type holddown groove; Two glide path rear ends are with following minister's beam vertical fixing, two front ends and be welded with angle bar two ends welding under the U type holddown groove, and the fixedly upper and lower end of hinge bar is installed in the upper and lower U type holddown groove by bolt respectively, the center bolt two ends place in the centre bore of two vertical locating pieces, two moving sliders are in opposite directions arranged on the center bolt, with two mobile terminals of hinge bar place in the sliding way respectively, bolt passes the sliding way areole and two slide blocks are fixed.

This novel design utilizes the increase and decrease of isosceles triangle base length, the highly also principle that thereupon changes, the rotation rocking handle drives the center bolt rotation, two moving sliders are done relative to moving backward forward, drive four parallelogram hinge bars and in slideway, move, realize the purpose of stepless same table, seat height.

The active active characteristic of special consideration student all concentrates on the desk middle part with two hinge bars among the design, so that allow student's two legs obtain more comfortable sitting posture in its outside, it is more convenient to leave the seat.Promptly away from the bottom of health one side, establish long beam and feet in the desk back, can increase the stability of support component.Establish two hinge bars or a hinge bar in every upper and lower two slideways, can flexible modulation.This simple in structure seeking only firmly guarantees economy and durability.

Description of drawings

Fig. 1 has two hinge bar structural front view in the table one sideslip road;

Fig. 2 is that the table front portion is the left view of Fig. 1;

Fig. 3 is the sliding way transmission mechanism schematic diagram similar to the desk width;

Fig. 4 is the glide path structural representation of the hinge bar other end corresponding with Fig. 3;

Fig. 5 is slideway 2 component shape schematic diagrames;

Fig. 6 has only a hinge bar structural front view in the table one sideslip road;

Fig. 7 is the sliding way drive mechanism schematic diagram that has only a toggle in each slideway;

Fig. 8 is the single connecting rod glide path structural representation corresponding with Fig. 7;

Fig. 9 is a chair with single connecting rod front view;

Figure 10 is a chair sliding way drive mechanism schematic diagram;

Figure 11 is the chair corresponding with a Figure 10 glide path structural representation.

The specific embodiment

Stepless limit increases the chair and desk for pupils that falls, comprise a case 1 and seat 18, it is characterized in that middle part, a case 1 and seat 18 lower surfaces forward and backward two long limits is all being fixed goes up angle bar 7, see Fig. 2, Fig. 3, all weld locating piece 12 on two in the middle of the inboard, right angle of angle bar 7, two sliding ways, 2 ends and U type holddown groove 15 and fixing with sliding way 2 that locating piece 12 two ends intersect vertically to external welding successively by bolt 14; Two glide paths, 4 rear ends are with following minister's beam 11 vertical fixing, two front ends and be welded with 15 times angle bar 10 two ends welding of U type holddown groove, and be installed in respectively in the upper and lower U type holddown groove 15 by the fixedly upper and lower end of bolt 14 with hinge bar 3, simultaneously U type holddown groove 15 and adjacent slideway sidewall are fixed.Two hinge bars 3 are connected and fixed by upper and lower two parallel stocks 9 in two slideways.Play firm effect.Center bolt 13 two ends place in the centre bore of two vertical locating pieces 12, the center bolt 13 front ends rocking handle 8 that spins.

Two slide blocks 17 are arranged on the center bolt 13, with hinge bar 3 upper and lower two mobile terminals place in the sliding way 2, glide path 4 respectively, bolt 16 passes sliding way 2, glide path 4 areoles are fixed with two moving sliders 17, and have in slide block one side and to reinforce angle bar 20, also see Fig. 4.

The screw thread of center bolt 13 is risen respectively by the centre and oppositely extremely holds separately, and during turn rocking handle 8, the drive of the slide block on thread segment hinge bar 3 oppositely or in opposite directions moves separately.

Screw thread on the center bolt 13 of screw-drive mechanism is risen by the centre and oppositely is threaded to far-end separately, the thin part in the forward and backward two ends of center bolt 13 matches with locating piece 12 centre bores, in 13 liang of reverse thread sections of center bolt moving slider 17 is arranged all, the length that center bolt 13 two ends do not have thread cylinder is the same with the width of locating piece 12, it is cubic cylindricality that the nose circle column length goes out part, cooperates with rocking handle 8 concave grooves; The screw thread of center bolt 13 can also be unidirectional, and the moving slider 17 that matches has only one.

Locating piece 12 is cuboids that there is open-work at the broadside middle part; The screw thread of center bolt 13 is risen respectively oppositely to end separately by the centre, slide block 17 be shaped as the long column body, there is the thread groove open-work that cooperates with center bolt 13 centre, there is the axial bolt hole at two ends.

Moving slider 17 two end axles of cylinder are to there being two screw, centres in opposite directions that the screw thread open-work that combines with center bolt 13 is arranged; Chair moving slider 17 two ends atresias.

The shape of sliding way 2 is similar to U type holddown groove 15, sees Fig. 5, and is all porose on the two side, and the width of sliding way 2 length and desk or chair is approaching, and the length of U type holddown groove 15 equates with last angle bar 7 or following angle bar 10.

Two sliding ways, 2 two ends place respectively between locating piece 12 and the U type holddown groove 15 in the last angle bar 7 interior right angles; Two glide paths, 4 two ends are welded in down angle bar 10 two ends, and its inboard is fixing with the U type holddown groove 15 that also is welded in down on the angle bar 10 by bolt 14 respectively, sees Fig. 4.

Fig. 6-8 is seen in the design of single hinge bar, with the difference of two hinge bar structures be that the screw thread of center bolt 13 is unidirectional, only dispose a slide block 17.Be applicable to desk and chair, see Fig. 9, the angle bar structure is gone up in the cladding of chair surface 18 front and rear ends.Yet, single hinge bar be designed for chair the time, see Figure 10, what difference was to cooperate with center bolt 13 is that moving slider 17 contact with slideway, but with reinforce angle bar 20 middle parts and fix, reinforce angle bar 20 two ends and the bolt 16 of locating in travelling nut 19 and the slideway 2 is installed is cooperated; The length of last angle bar 7 is lengthened to the length near seat, and U type holddown groove 15 is fixing with sliding way 2 by bolt 14 at the two ends of last angle bar 7.Equally, the also corresponding lengthening of the length of following angle bar 10 is seen Figure 11, and U type holddown groove 15 is inboard fixing with it by bolt 14 at glide path 4, and its structure is identical with structure with desk shown in Figure 8.

Installation procedure at first is the assembling of spiral transport sector: the desk of bilateral hinge bar is arranged, see Fig. 1, select the screw rod of bidirectional helical.Earlier there is two both sides the moving slider 17 of screw to be installed on the center bolt 13, is threaded to center bolt 13 middle parts.Center bolt 13 threadless two ends vertically place in locating piece 12 screws, two bolts are inserted two sliding ways, 2 side slotted holes respectively cooperate with moving slider 17 both sides screws, two sliding ways 2 are fixed on the both sides of moving slider 17.Four U type holddown grooves 15 are installed together respectively by four ends of bolt and two sliding ways 2.The forward and backward two ends of center bolt 13 are inserted in the hole of forward and backward two locating pieces 12, respectively four of two sliding ways 2 ends and four U type holddown grooves 15 and two locating pieces 12 are vertically welded in the inboard, right angle of two mutually the same angle bar 7 more respectively, and 7 liang of end sections of U type holddown groove 15 and last angle bar align and align; Locating piece 12 aligns with the edge of last angle bar 7 right angle madial walls and aligns; Wherein angle bar 7 lateral walls center is porose on the front, must align with center bolt 13 long thin ends to align, for cooperating with rocking handle 8 concave grooves.So far spiral transport sector assembling is finished.Attention all is adjusted at the horizontal center line of fixed block 12, the horizontal center line of center bolt 13, the horizontal center line of moving slider 17, the horizontal center line of U type holddown groove 15 and the horizontal center line of sliding way 2 on the same plane.

The assembling of glide path: identical with spiral transport sector specification, just there have not been center bolt 13, moving slider 15 and locating piece 12.The position of U type holddown groove 15 and the position of glide path 4 are inside and outside to be exchanged, glide path 4 outside, U type holddown groove 15 is interior.Following angle bar 10 bottom surfaces are outside welds with the long beam of angle bar 11 middle parts, and following angle bar 10 two ends have feet 5, long beam 11 two ends that feet 6 is arranged.

The desk overall package: earlier the spiral transport sector is welded on a case 1 lower surface middle part, outside of angle bar 7 aligns with the forward and backward edge of table case 1 and aligns on former and later two of its spiral transport sector.Then be articulated and connected by bolt and two sliding ways 2, four U type holddown grooves 15 respectively eight of two groups of hinge bar 3 upper ends are single-ended, four of hinge bar 3 outsides are single-ended to be hinged on respectively in four U type holddown grooves 15 by bolt; Four inboard single-ended inserting respectively in twos in the sliding way 2, bolt passes sliding way 2 two side slotted holes and hinge bar 3 single-ended holes earlier, cooperates at the screw with moving slider 17 sides.Be articulated and connected with two glide paths 4, four U type holddown grooves 15 respectively eight of the lower ends of hinge bar 3 are single-ended more simultaneously, four single-ended in twos inserting respectively in the glide path 4 in hinge bar 3 outsides, bolt passes glide path 4 two side slotted holes and hinge bar 3 single-ended holes and nut and screws.Inboard four single-endedly are hinged on respectively in four U type holddown grooves 15 by bolt.The single-ended of hinge bar 3 in the U type holddown groove 15 all is the hinged securement end; The single-ended of hinge bar 3 in sliding way 2, the glide path 4 all is the mobile terminal.So far desk installs.

The desk of chair and single hinge bar 3 assemble method with two hinge bars 3 substantially is identical.Insert the center bolt end when rocking handle 8 uses, with after promptly take off collection.

Claims

1. stepless limit increases the chair and desk for pupils that falls, comprise a case (1) and seat (18), it is characterized in that middle part, a case (1) and seat (18) lower surface forward and backward two long limits all fixing the last angle bar (7) of spiral transport sector, all weld locating piece (12) in the middle of the inboard, right angle of angle bar on two (7), two sliding ways (2) end and U type holddown groove (15) that locating piece (12) two ends intersect vertically to external welding successively; Weld at two glide paths (4) rear end and following minister's beam (11) vertical fixing, two front ends and following angle bar (10) two ends that are welded with U type holddown groove (15), and the fixedly upper and lower end of hinge bar (3) is installed in the upper and lower U type holddown groove (15) by bolt (14) respectively, center bolt (13) two ends place two vertical locating pieces { in the centre bore of 12}, two moving sliders (17) are in opposite directions arranged on the center bolt (13), with (3) two mobile terminals of hinge bar place in the sliding way (2) respectively, bolt (16) passes sliding way (2) areole and fixes with two slide blocks (17).

2. stepless limit according to claim 1 increases the chair and desk for pupils that falls, it is characterized in that screw thread on the center bolt (13) of screw-drive mechanism is risen by the centre oppositely is threaded to far-end separately, the thin part in the forward and backward two ends of center bolt (13) matches with locating piece (12) centre bore, in center bolt (13) the two reverse thread sections moving slider (17) is arranged all, the length that center bolt (13) two ends do not have thread cylinder is the same with the width of locating piece (12), it is cubic cylindricality that the nose circle column length goes out part, cooperates with rocking handle (8) concave groove; The screw thread of center bolt (13) can also be unidirectional, and the moving slider that matches (17) has only one.

3. stepless limit according to claim 1 increases the chair and desk for pupils that falls, and the shape that it is characterized in that locating piece (12) is the cuboid that there is open-work at the broadside middle part.

4. stepless limit according to claim 1 increases the chair and desk for pupils that falls, and it is characterized in that the shape of sliding way (2) is similar to U type holddown groove (15), and all porose on the two side, the width of sliding way (2) length and desk or chair is approaching; The length of U type holddown groove (15) equates with last angle bar (7) or following angle bar (10).

5. stepless limit according to claim 1 increases the chair and desk for pupils that falls, it is characterized in that single hinge bar be designed for chair the time, difference is that the length of angle bar (7) is lengthened to the length near seat, U type holddown groove (15) is at the two ends of last angle bar (7), and is fixing by bolt (14) and sliding way (2); Moving slider (17) with reinforce angle bar (20) middle part fixing, reinforce angle bar (20) two ends and the bolt (16) of locating in travelling nuts (19) and the slideway is installed is cooperated; The also corresponding lengthening of the length of following angle bar (10), U type holddown groove (15) is inboard fixing with it by bolt (14) at glide path (4).

6. stepless limit according to claim 1 increases the chair and desk for pupils that falls, and moving slider (17) two end axles that it is characterized in that cylinder is to there being two screw, centres in opposite directions that the screw thread open-work that combines with center bolt (13) is arranged; Chair moving slider (17) two ends atresia.