CN201157158Y - Elevation and subsidence tablet chair - Google Patents

Abstract

The utility model discloses an elevating chair comprising an upper bracket, a lower bracket as well as a chair back plate and a chair seat plate fixed on the upper bracket, wherein, the upper bracket comprises a left upper supporting tube, a right upper supporting tube, and a seat frame which is welded between the left and the right upper supporting brackets and used for supporting the chair seat plate; the left and the right upper supporting tubes are provided with a plurality of screw holes; the lower bracket comprises a left lower supporting tube, a right lower supporting tube and a U-shaped bottom tube welded between the left and the right lower supporting tubes; the left and the right lower supporting tubes are provided with a plurality of locating holes; all the left and the right upper supporting tubes and the left and the right lower supporting tubes have oval sections, the flat side surface of the left upper supporting tube faces to the flat side surface of the left lower supporting tube, the flat side surface of the right upper supporting surface faces to the flat side surface of the right lower supporting surface, the left upper and the left lower supporting tubes are inserted and fixed with the right upper and the right lower supporting tubes through at least one bolt. The walls of the left and the right upper supporting tubes are provided with concave holes through the drilling of a fusible aiguille, the screw holes are formed through the tapping of the horn-shaped concave holes by screw taps. The structure of the elevation classroom chair is simple, the rigidity is good, the elevating chair is firm, wearable and light, the height of the elevating chair is adjustable, and the production efficiency is high.

Description

Lifting school chair

Technical field

A kind of school instruction articles for use, particularly a kind of chair for students with lift adjustment function.

Background technology

Tablet chair is the basic equipment in the educational institution, and student's health is had significant effects.For chair for students, at first should be simple in structure, good rigidly, durable, in light weight, secondly, and also should be attractive in appearance, clean and tidy, corner angle are few, and in addition, for pupils and students, because factors such as height differences, the height of tablet chair should be adjustable.

It is that the employing plastics are raw material that China utility model patent ZL98251901.9 discloses a kind of adjustable for height plastics student seat, makes part with Shooting Technique, combines with screw-jointing method.To mould Dai Mu, in light weight to mould Dai Gang, transportation volume is little, and price is low, adjustable height, and the student who is suitable for extensive age bracket uses in family and school.Yet because the student is active, working of plastics is aging easily, therefore is difficult to satisfy durable needs.

Therefore need provide a kind of chair for students that satisfies above-mentioned needs.

The utility model content

The purpose of this utility model is to provide a kind of lifting school chair of satisfied teaching needs, and it is simple in structure, good rigidity, durable, in light weight, adjustable height, productivity ratio height, is convenient to transportation and storage.

For reaching this purpose, the utility model lifting school chair, comprise upper bracket, lower carriage and be fixed on chair back plate, chair seat board on the upper bracket, upper bracket comprises the left and right mounting of going up arm and being welded on the described chair seat board of support between the upper bracket of the described left and right sides, about go up and form some screws on the tube wall; Lower carriage comprises that the left and right lower branch line of left and right lower branch line is provided with a plurality of locating holes; Wherein, left and right upward arm and left and right lower branch line all are elliptic cross-section, and upper left arm is faced mutually with the flat sides surface of lower-left arm, upper right arm and bottom right arm, and upper left arm is plugged on also by at least one bolted with the bottom right arm with lower-left arm and upper right arm.

Preferentially, above-mentioned left and right lower branch line comprises respectively: constitute the first and the second portion of J type, first with about on arm be connected, be welded with U type bottom tube between lower-left arm and the bottom right arm, second portion and U type bottom tube are positioned at horizontal plane.Angle between first and the second portion is 100 °～110 °, is preferably 104 °.

Preferably, above-mentioned mounting is welded by U type pipe and horizontal arm, and chair seat board is fixed on the U type pipe by pulling rivet.Angle between the plane at mounting place and the last arm is 95 °～105 °, is preferably 100 °.

Preferably, the top near arm on left and right is welded with the chair back plate fixture, and chair back plate is fixed on the chair back plate fixture by pulling rivet.

Preferably, an above-mentioned left and right tube wall of going up forms recessed hole by fusible drill bit punching, and screw is formed through the screw tap tapping by bellmouth orifice.

Preferably, be " eight " shape between above-mentioned upper left arm, lower branch line and upper right arm, the lower branch line substantially.

Preferably, above-mentioned chair seat board has sunk area, and the bottom surface of this sunk area is substantially parallel with horizontal plane.

In the preferred embodiment of utility model, lifting school chair is by hexagonal is regulated bolt in upper bracket, lower carriage, chair seat board, chair back plate and the circle shape for hat, pulling rivet is formed.Upper bracket through the moulding of welding plastic-blasting, and is furnished with the upper bracket decoration by upper left arm, upper right arm, left chair back fixed head, right chair back fixed head, seat support U type pipe, the horizontal arm of seat support.Lower carriage, and is furnished with lower carriage and moulds cover and footing pad through the moulding of welding plastic-blasting by lower-left J type pipe, bottom right J type pipe, the U type of going to the bottom pipe.Chair seat board and chair back plate are made of the hot pressing template of monoblock respectively.

The utility model lifting school chair adopts upward, and lower carriage all is welded by elliptical tube, it is big to bear the intensity of pressure, the tubing of two kinds of Different Diameter can suit, and the side surface that flattens of tubing is fit to adopt fusible drill bit punching to form horn-like recessed, so that the screw tap tapping forms screw, go up lower carriage like this and promptly can optionally be spirally connected and realize adjustable for height purpose with bolt with the screw of upper bracket.In addition, chair seat board and chair back plate are connected on the upper bracket by pulling rivet, are connected firmly.Thereby make that lifting school chair of the present utility model is simple in structure, good looking appearance, in light weight, productivity ratio is high, is convenient to transportation and storage.Chair seat board adopts the mode that is in tilted layout a little, and the bottom surface in the recessed zone of chair seat board is basic parallel with horizontal plane, thereby comfortableness improves.Lifting school chair of the present utility model in addition can be folded buttress or fold placement, thereby transports convenient storage, saving transportation storage area.Be fit to the use of this collective of school occasion.

Be noted that the description and the following detailed description all are exemplary, being intended to provides further instruction to desired the utility model.

Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage, below with reference to accompanying drawings, other purpose, feature and effect of the present utility model is described in further detail.

Description of drawings

Constitute this specification a part, be used for further understanding accompanying drawing of the present utility model and show preferred embodiment and be used for illustrating principle of the present utility model with explanation.In the accompanying drawing:

Fig. 1 shows the perspective view according to the lifting school chair of the utility model preferred embodiment;

Fig. 2 shows the side view of lifting school chair shown in Figure 1;

Fig. 3 shows the perspective view of the upper bracket of lifting school chair shown in Figure 1;

Fig. 4 shows the front view of upper bracket shown in Figure 3;

Fig. 5 shows the side view of upper bracket shown in Figure 3;

Fig. 6 shows the cutaway view of A-A direction among Fig. 5;

Fig. 7 shows the perspective view of the lower carriage of lifting school chair shown in Figure 1;

Fig. 8 shows the front view of lower carriage shown in Figure 7;

Fig. 9 shows the side view of lower carriage shown in Figure 1;

Figure 10 shows the perspective view of the chair seat board of lifting school chair shown in Figure 1;

Figure 11 shows the side view of chair seat board shown in Figure 10;

Figure 12 shows the perspective view of the chair back plate of lifting seat shown in Figure 1;

The specific embodiment

Below describe preferred embodiment of the present utility model in detail.In the accompanying drawings, identical parts are represented with same label.

Fig. 1-2 shows lifting school chair 1, and as shown in the figure, lifting school chair 1 comprises upper bracket 100, lower carriage 200, chair seat board 300, chair back plate 400.Wherein, chair seat board 300, chair back plate 400 are fixed on upper bracket 100, and upper bracket 100 and lower carriage 200 are plugged on together, and are provided with lifting regulating mechanism 500.About included angle A among Fig. 2 and included angle B, will in each following component representation, go through.

Fig. 3-6 shows upper bracket 100, and as shown in the figure, upper bracket 100 comprises upper left arm 110, upper right arm 111 and is welded on the left and right mounting of going up between the arm 110,111 130.Mounting 130 comprises U type pipe 131 and is welded on the horizontal arm 133 of U type tube opening end that chair seat board 300 is fixed on the U type pipe by a plurality of pulling rivets.Near arm 110,111 tops on left and right, be welded with chair back plate fixture 150,151, chair back plate is fixed in two fixtures 150,151 by a plurality of pulling rivets.U type tube opening end and about on the top of arm, be respectively equipped with decoration 140,141,160,161.About on the lateral wall of arm (or on madial wall), offer a plurality of screws 510, about go up arm 110,111 and be " eight " word shape and arrange, left and rightly go up angle C between arm 110 and the mounting plane greater than 90 °, for example 91 °～93 °, be preferably 91.5 degree.As seen from Figure 5, the included angle A between upper left arm 110 and the mounting 130 is greater than 95 °, for example 100 °.As seen from Figure 6, about go up cross section ovalize, Long Circle or the oblateness of arm, screw 510 is opened in a flat sides surface of left and right sides upper bracket, extends to thickness greater than tube wall to tube cavity, so that increase the intensity that is spirally connected.In one embodiment, utilize fusible drill bit punching, can form hole (it is horn-like that this hole slightly is), utilize the screw tap tapping can form screw 510 afterwards greater than pipe thickness.

Fig. 7-9 shows lower carriage 200, as shown in the figure, lower carriage 200 comprises left and right lower branch line 210,211 and U type bottom tube 220, lower-left arm 210 comprises first 212 and second portion 214, wherein first 212 is plugged on 110 with last arm and is plugged on together, and on side surface, be provided with a plurality of holes 520, be used for that bolt therefrom passes and they are fastening.It is on the ground that second portion 214 is positioned at same plane with U type bottom tube 220, and it is big, safe to support the bottom surface.Included angle B between first 212 and the second portion 214 for example between 100 ° to 105 °, is preferably 104 ° greater than 90 degree.End and U type bottom tube end at the second portion of left and right sides lower carriage, be respectively equipped with footing pad 230, with the frictional force between increase and the ground, it can be made by plastics or elastomeric material, can be connected to the end of left and right sides lower carriage and the end of U type bottom tube by several different methods, for example by methods such as embedding, be inserted in or be spirally connected.Be provided with in the end of the first of left and right sides upper bracket and mould cover 240,241, mould the exposure that cover 240,241 can be avoided first's end metal material, prevent that on the one hand the sharp-pointed part of end face from hurting sb.'s feelings, increase attractive in appearance on the other hand.

Figure 10-11 shows chair seat board 300, as shown in the figure, chair seat board 300 comprises main part 301 and in the marginal portion 303 of main body one lateral bending Qu Yanshen, on main part 301, also be provided with recessed zone 305, the contour shape in recessed zone 305 matches with seat person's buttocks shape, and the ground in recessed zone 305 is parallel substantially with horizontal plane, like this to be arranged so that the student feels to do reliable and comfortable, chair seat board 300 is fixed together by pulling rivet (not shown) and mounting 130, connects reliably, succinctly attractive in appearance.

Figure 17 to 20 shows chair back plate 400, and as shown in the figure, chair back plate 400 is pressed into arc, and for example it is the part of circular arc, and its curvature can be selected as required.Chair back plate 400 is fixed to chair back plate fixture 150,160 by a plurality of pulling rivets.

According to lifting school chair 1 of the present utility model, it is pegged graft by upper bracket and lower carriage and forms, last undercarriage and lower carriage all have ellipticity or oblate shape or long round section tubing to be welded, the tubing arranged in orientation becomes can bear student's gravity and on-deformable state, the i.e. state faced mutually of the flat sides surface of tubing as shown in the figure, thereby make the good rigidly of seat, safe and reliable.

The lift adjustment of lifting school chair 1 of the present utility model realizes by the relative position of selecting screw, 3 holes are for example arranged on the wall of the lower branch line of lower carriage, 5 screws are arranged on the wall of the last arm of upper bracket, after will going up lower carriage and being plugged on together, two corresponding on two screws on the last arm and lower branch line screws are got final product with two bolting.The existence of sharp-pointed part and prevent that the student from touching voluntarily on the lifting school chair adopts the round end hexagon socket head cap screw to come the grafting of fastening elevation by-pass in the present embodiment.

In the embodiment shown in fig. 1, last arm has inserted in the lower branch line, yet in other embodiments, can replace to: lower branch line can insert in the arm, can reach the purpose of this utility model equally.

Be preferred embodiment of the present utility model only below, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes, variation and omission.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims (9)

1. lifting school chair comprises upper bracket, lower carriage and is fixed on chair back plate, chair seat board on the upper bracket, it is characterized in that,

Described upper bracket comprises the left and right mounting of going up arm and being welded on the described chair seat board of support between the upper bracket of the described left and right sides, goes up about described and forms some screws on the tube wall;

Described lower carriage comprises left and right lower branch line, and described left and right lower branch line is provided with a plurality of locating holes;

Wherein, described left and right upward arm and left and right lower branch line all are elliptic cross-section, and upper left arm is faced mutually with the flat sides surface of lower-left arm, upper right arm and bottom right arm, and described upper left arm is plugged on also by at least one bolted with the bottom right arm with lower-left arm and upper right arm.

2. lifting school chair according to claim 1, it is characterized in that, described left and right lower branch line comprises respectively: the first and the second portion that constitute the J type, described first with described about go up arm and be connected, be welded with U type bottom tube between described lower-left arm and the bottom right arm, described second portion and described U type bottom tube are positioned at horizontal plane.

3. lifting school chair according to claim 2 is characterized in that, the angle between described first and the second portion is 100 °～110 °.

4. lifting school chair according to claim 1 is characterized in that, described mounting is welded by U type pipe and horizontal arm, and described chair seat board is fixed on the U type pipe by pulling rivet.

5. lifting school chair according to claim 4 is characterized in that, the plane at described mounting place and the angle between the last arm are 95 °～105 °.

6. lifting school chair according to claim 1 is characterized in that, near described left and right on the top of arm, be welded with the chair back plate fixture, described chair back plate is fixed on the described chair back plate fixture by pulling rivet.

7. according to each described lifting school chair in the claim 1 to 6, it is characterized in that a described left and right tube wall of going up forms recessed hole by fusible drill bit punching, described screw is formed through the screw tap tapping by described bellmouth orifice.

8. lifting school chair according to claim 7 is characterized in that, is " eight " shape between described upper left arm, lower branch line and upper right arm, the lower branch line.

9. lifting school chair according to claim 8 is characterized in that described chair seat board has sunk area, and the bottom surface of described sunk area is substantially parallel with horizontal plane.

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