CN2072357U

CN2072357U - Folding height-adjustable desk

Info

Publication number: CN2072357U
Application number: CN 90206384
Authority: CN
Inventors: 俞子平; 俞子庄; 周群
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-05-10
Filing date: 1990-05-10
Publication date: 1991-03-06

Abstract

The utility model relates to a folding height-adjustable desk. The existing folding height-adjustable desks has lots of species with the disadvantages of big actual volume of folding state, low dynamic load stability, and bad bearing capacity. The both ends of the two force rods of the utility model are respectively hinged with desk legs and stop plate fixed on a desk panel to support and lock U-shaped desk legs ensuring the stability and the bearing capacity of the desk. The opening width of the two U-shaped table legs is unequal. The upper ends of the U-shaped table legs are hinged with the desk panel, taking small volume including the drawer under a folding state. Universal castors are arranged on the lower ends of inner casing tubes of the U-shaped desk legs. The utility model can be used as a studying desk for preschool children and primary and secondary school students, having the advantages of labor saving of the desk moving, convenient desk motion, compact structure, and multifunction.

Description

Folding height-adjustable desk

The utility model relates to a kind of desk, and especially a kind of collapsible and adjustable for height study is the improvement to existing common folding table with table.

(notification number: GG88212558, the day for announcing: 881130) disclose a kind of like this multifunctional table, its formation is: the rotation of roundlet desktop and supporting are the central shaft by its reverse side to Chinese patent, are inserted in to carry out in the axle sleeve at cross center.Each table leg constitutes by long and short two joint leg, is used for regulating the height of desktop and uses when folding.Chinese patent (notification number 86209553, the day for announcing 880824) also discloses the collapsible study desk of a kind of steelframe, and its formation is: connect into a frame by 3 U-shaped pipes, put the panel that is equipped with the hole on the table frame, connect sleeve pipe, the screw rod of transferring height of table top on the table leg.The common weak point that exists of disclosed collapsible and adjustable for height desk is on the above-mentioned patent gazette: the shared volume in folding back is also bigger and be subjected to the restriction of structure, on the desktop drawer can't be installed, and purposes is comparatively single, and displacement is also than requiring great effort.

The purpose of this utility model is to overcome above shortcomings in the prior art and provides that the shared volume in a kind of folding back is little, the laborsaving convenience that is shifted, mainly is applicable to that multipurpose learning that preschool child and students in middle and primary schools use is with table.

Goal of the invention of the present utility model is realized by following technical solution.

The utility model adopts two A/Fs not wait, and the U-shaped table leg of folding back mutually noninterfere replaces existing folding cross leg or three table framves that the U-shaped pipe connects into.The upper end and the desktop of U-shaped table leg are hinged, and two power bar two ends of support locking mechanism are respectively with the U-shaped table leg and to be fixed on the limiting plate of desktop downside hinged.The lower end of the height adjustment mechanism inner sleeve on the U-shaped table leg is equipped with universal wheel, and when the desk needs were mobile, an end that only need lift desk can make things convenient for, displacement effortlessly.The height adjustment mechanism of installing on the U-shaped table leg can be not have joint or the joint height adjustment mechanism is arranged, and specific constructive form can be divided into: the nothing joint is regulated, screw thread is paid structure; Axial limiting screw and interior overcoat combined mechanism.There is joint to regulate: spring column pin mechanism; The mechanism of unidirectional postioning abutment and the combination of interior overcoat decides on technology.Because two U-shaped table leg A/Fs do not wait, do not interfere again after folding, according to a less space that the U-shaped table leg is taken in, design learning drawer appearance and size and other annex of table, guaranteeing under the little prerequisite of compact conformation, volume, can make study of the present utility model with having multiple function of use.

Description of drawings is as follows:

Fig. 1 is the utility model overall structure schematic diagram.

Fig. 2 is the utility model folded state schematic diagram.

Fig. 3 is a support locking structural scheme of mechanism of the present utility model.

Fig. 4 is the height adjustment mechanism schematic diagram that the utility model adopts spring column pin.

Fig. 5 is the height adjustment mechanism schematic diagram that the utility model adopts the axial limiting screw.

The utility model will be in conjunction with the accompanying drawings, does further to comment.

As the folding and adjustable for height study of Fig. 1～shown in Figure 2 with table, the U-shaped steel

pipe table leg

2 and 2 that does not wait by desktop 1 and two A/Fs ', hinge 3, support locking mechanism 4, height adjustment mechanism 5, universal wheel 6 and drawer 7 formed.The surface layer pressing plate is moulded in desktop 1 employing or three-ply board is made, U-shaped table leg 2 and 2 ' hinged by hinge 3 and desktop 1, when table leg 2 and 2 ' be in folded state, because of the A/F B of table leg 2 be not less than table leg 2 ' width b, in table leg 2 ' the be included in table leg 2 (otherwise can), do not interfere yet.According to table leg 2 ' the reverse side projected area of desktop 1 designs the appearance and size under the drawer when being folded state.Volume after the utility model is folding is the height sum that the area of desktop 1 multiply by the thickness and the drawer 7 of desktop 1, and structure is quite compact.For making desk have good dynamic load stability and bigger bearing capacity, the support locking mechanism 4 that employing is made up of two power bars, pin, limiting plate and desktop 1 and table leg 2,2 ' be connected, lock-out state form and support triangular structure of right angle and guarantee table leg 2 and 2 ' vertical with desktop 1.U-shaped table leg 2 and 2 ' installation sleeve tubular type height adjustment mechanism with can carry out easily highly regulating and the adjusting at desktop angle of inclination (table leg 2 and 2 ' the upper end wherein have two ends and desktop employing sphere to be connected.Especially be suitable for the needs that preschool child and students in middle and primary schools regulate height of table top with the variation of height, with the supporting use of the chair of adjustment height, better effects if.Because height of table top and angle can be regulated, the utlity model has multiple use, as tea table, small-sized dining table and drawing table.Can also offer the installing hole of music easel and sighting distance retainer if desired at desktop, insert required annex, use one more.Universal wheel 6 is equipped with in the inner sleeve lower end of height adjustment mechanism 5 of the present utility model, when desk need be moved displacement, passes as long as lift an end of desk, and is convenient and strength-saving.

Support locking mechanism 4 as shown in Figure 3 by two power bars 8, pin 9 and 9 ', limiting plate 10, extension spring 11 constitute.The two ends of power bar 8 are respectively with U-shaped table leg 2 and 2 ' and it is hinged to be installed in the limit value plate 10 of desktop 1 downside, 9 ' after have extension spring to connect.The table leg 2 or 2 ' stopper slot 10 of pin 9 ' disengaging limiting plate 10 when folding '.Under the extension spring effect, along level trough 10 " slippage, until U-shaped table leg 2 and 2 ' tension is labelled to desktop 1 bottom, in order to avoid folding back U-shaped table leg 2 and 2 ' cause loosening.Otherwise, when in running order,, make whole pair of U type table leg be in tightening state because of the active force of extension spring.The installation of limiting plate 10 should be satisfied pin 9 ' along level trough 10 " slippage is without hindrance, and pin 9 ' enter stopper slot 10 ' after, table leg 2 and 2 ' should be vertical with desktop 1, promptly form the leg-of-mutton support locking structure in a right angle.

Fig. 4-Fig. 5 is two kinds of versions that height of table top is regulated, and when in fact axial height is regulated, can also adopt screw thread to pay or unidirectional postioning abutment structure.Height adjustment mechanism 5 shown in Figure 4 is crossed axis by U-shaped table leg 2 and 2 ' lower end and spring column pin 12 is installed and is had the outer tube 13 of fitting locating hole mutually with spring column pin 12 diameters and constitute.The internal diameter of outer tube 13 should be suitable mutually with the external diameter of the inner sleeve that spring column pin is housed, and low tolerance is arranged.The arrangement pitches of locating hole is advisable about with 3～5cm on the outer tube 13.When needing to regulate height of table top, be pressed into spring column pin 12, and make the relative U-shaped table leg 2 of inner sleeve and 2 ' slip, be adjusted to desired height, make spring column pin 12 enter locating hole again and get final product.Height adjustment mechanism shown in Figure 5 is then more simple.The outer tube 13 and the axial limiting screw 14 of being fitted by inner sleeve external diameter and U-shaped table leg 2,2 ' mutually constitute.Height of table top unclamps axial limiting screw 14 in the time of need regulating.Being adjusted to desired height tightens and gets final product.

The utility model compared with prior art has the following advantages:

1, after folding, the U-shaped table leg is close to the table top plate structure compactness, comprises that the shared actual volume of drawer is littler. 2, universal wheel, the laborsaving convenience of table moving are installed in the inner sleeve lower end of height adjustment mechanism. 3, adopt the support locking mechanism of two power rod members, desk has good dynamic load stability and bigger bearing capacity. 4, height of table top and angle are adjustable, are furnished with the annexes such as drawer, music easel, vision distance maintaining frame and desk lamp, and except as the desk, it is multiplex also can to double as one on tea table, dining table, drawing table, qin table etc., are easy to school and family promotes the use of.

Claims

1, a kind of collapsible and adjustable for height desk, by drawer, the U-shaped table leg of height adjustment mechanism is installed and desktop is hinged forms, it is characterized in that: two power bar (8) two ends of support locking mechanism (4) are respectively with U-shaped table leg (2) and (2 ') and to be fixed on the limiting plate (10) of desktop (1) downside hinged, the A/F B of U-shaped table leg (2) is not less than the A/F b of table leg (2 '), and universal wheel (6) is equipped with in the inner sleeve lower end of height adjustment mechanism (5).

2, desk as claimed in claim 1 is characterized in that: height adjustment mechanism (5) is made of with the outer tube (13) that has with the suitable mutually locating hole of spring column pin (12) diameter spring column pin (12).