CN2372975Y

CN2372975Y - Table board device with push-and-pull folding type elbow supporting plate

Info

Publication number: CN2372975Y
Application number: CN 99210786
Authority: CN
Inventors: 苏垣
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-05-11
Filing date: 1999-05-11
Publication date: 2000-04-12
Anticipated expiration: 2009-05-11

Abstract

The utility model relates to a desktop plate device, particularly a desktop plate device for desks of middle school and primary school students and computer desks. The left side and the right side of the bottom surface of a desktop plate are mainly and respectively provided with longitudinal guide rail slots, and corresponding push-pull plates are glidingly arranged in the two longitudinal guide rail slots respectively. The bottom surfaces of the two push-pull plates are respectively connected with a corresponding left and a right elbow supporting plates by a plurality of support folding hinges. Thus, front arms and elbow parts can be correctly supported on the desktop and occupied space can be reduced, and meanwhile, use is convenient.

Description

But push-pull folding props up the desktop device of bracket

The utility model relates to a kind of desktop device, especially refers to primary and secondary students' desk and computer desk desktop device.

At present, traditional writing desk desktop is rectangle mostly, and people write proper effectively in order to make word, feel comfortable again, generally two forearms and ancon are supported on the rectangular table panel and write, but, the human body upper body must be again at rectangular table panel rear side, and forearm and ancon stretch out before inwardly having only, just can be supported on the desktop, certainly will make spinal curvature and eyes too near desktop, especially be in for a long time to lie prone and write, read a book, make health form crookback, crooked and hypometropia easily in the posture of desktop for minor primary and secondary students; For the desktop of placing computer, typewriter,, make the people easily suffer from neck shoulder wrist syndrome equally also because the hand of operation lacks suitable ancon supporting, and in fact ancon is in the posture of suspending the wrist, and has increased the weight of the burden of shoulder, ancon and wrist.

In view of this, but the purpose of this utility model provides the desktop device that a kind of push-pull folding props up bracket, it can be below desktop push-and-pull go out collapsible left and right bracket and be suspended at desktop back edge left and right side respectively.

The purpose of this utility model is achieved in that it comprises a desktop and several supported folding hinges, it is characterized in that: left and right side is respectively equipped with vertical guide-track groove in the desktop bottom surface, in this two vertical guide-track groove, slide respectively and establish corresponding draw back plate, connect corresponding left and right bracket with several supported folding hinges respectively in the bottom surface of this two draw back plate.

Described left and right bracket is that medial surface is right-angled trapezium and its close desktop rear end, long horizontal side on inclined-plane.

Described left and right bracket be medial surface be concave arc surface and at right angles trapezoidal shape and its long horizontal side near the desktop rear end.

Described left and right bracket be medial surface be concave arc surface, short side be the convex face and at right angles trapezoidal shape and its long horizontal side near the desktop rear end.

Described left and right bracket is that medial surface is that concave arc surface, short side and lateral surface are all the convex face, and its long horizontal side is near the desktop rear end.

Owing to adopt such scheme: can guarantee that forearm and ancon correctly are supported in desktop, and can reduce desktop and take up room that it is also convenient to use simultaneously.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 the utility model exemplary embodiments schematic diagram.

Fig. 2 the utility model exemplary embodiments is propped up the front-view schematic diagram of bracket below desktop.

The horizontal schematic diagram of a kind of arc medial branch of Fig. 3 the utility model exemplary embodiments bracket.

Among the figure: 1, desktop, 11, vertical guide-track groove, 12, the front lath, 13, the backstop lath, 2, draw back plate, 21, lower protruding block, 3, a left side bracket, 4, a right bracket, 5, supported folding hinge.

Present embodiment comprises a desktop 1, two draw back plates 2, a left side bracket 3, right bracket 4 and several supported folding hinges 5, shown in Fig. 1～3, wherein:

Desktop 1 rectangular-shaped or arc-shaped (genus prior art), the left and right vertical guide-track groove 11 (as: constituting) that is respectively equipped with of its bottom surface with two relative angle bar shapes or I-steel shape section bar, also the front and back ends in left and right vertical guide-track groove 11 centre positions is provided with front lath 12 and backstop lath 13 (it connects vertical guide-track groove 11 front and back ends respectively) respectively, spacing for to draw back plate 2.

Two draw back plates 2 are rectangular, centre position, its rear end is provided with a lower protruding block 21, this two draw back plate 2 is supported in respectively in the left and right vertical guide-track groove 11 of desktop 1 slidably, its lower protruding block 21 with draw back plate 2 to forward and backward slip respectively against the front lath 12 and the backstop lath 13 of desktop 1, with the stroke of restriction draw back plate 2 push-and-pulls.

A left side, a right bracket 3, the 4th, relatively be separately positioned on both sides, desktop 1 rear end with the inboard, and several supported folding hinges 5 with its bottom surface are connected desktop 1 left side, two draw back plates, 2 bottom surfaces on the right (as: each bracket connects with two supported folding hinges that separate 5), this supported folding hinge 5 is collapsible 90 ° or 180 ° and connecting rod assembly structure that can gripper shoe, belong to prior art (commodity that sell in market), therefore, a left side, a right bracket 3,4 can be supported on the left side, rear end of desktop 1, right side (end face of its end face and desktop 1 is on same horizontal plane), ancon support for the people, and after can stretching out in the vertical guide-track groove 11 with draw back plate 2, make 90 ° of turnovers downwards or 180 ° (owing to leave object below the desktop 1, as: table is cupboard down, drawer etc.), push vertical guide-track groove 11, a left side with draw back plate 2 then, a right bracket 3,4 can push respectively on a corresponding left side, right vertical guide-track groove 11 belows.And left and right bracket 3,4 can be that medial surface is the right-angled trapezium (long horizontal side is near desktop 1 rear end) on inclined-plane, also can make concave arc surface to medial surface, or medial surface is that concave arc surface, short side are the convex face, or medial surface is that concave arc surface, short side and lateral surface are all the convex face.

Claims

1, but a kind of push-pull folding desktop device of propping up bracket comprises a desktop (1) and several supported folding hinges (5), it is characterized in that: left and right side is respectively equipped with vertical guide-track groove (11) in desktop (1) bottom surface, in this two vertical guide-track groove, slide respectively and establish corresponding draw back plate (2), use several supported folding hinges (5) to connect corresponding left and right bracket (3), (4) in the bottom surface of this two draw back plate (2) respectively.

But 2, prop up the desktop device of bracket by the described push-pull folding of claim 1, it is characterized in that: described left and right bracket (3), (4) are that medial surface is right-angled trapezium and its close desktop (1) rear end, long horizontal side on inclined-plane.

But 3, prop up the desktop device of bracket, it is characterized in that by the described push-pull folding of claim 1: described left and right bracket (3), (4) be medial surface be concave arc surface and at right angles trapezoidal shape and its long horizontal side near desktop (1) rear end.

But 4, prop up the desktop device of bracket, it is characterized in that by the described push-pull folding of claim 1: described left and right bracket (3), (4) be medial surface be concave arc surface, short side be the convex face and at right angles trapezoidal shape and its long horizontal side near desktop (1) rear end.

But 5, prop up the desktop device of bracket by the described push-pull folding of claim 1, it is characterized in that: described left and right bracket (3), (4) are that medial surface is that concave arc surface, short side and lateral surface are all the convex face, and its long horizontal side is near desktop (1) rear end.