CN2137105Y

CN2137105Y - Automatically adjusting height desk for drawing and writing

Info

Publication number: CN2137105Y
Application number: CN 92220263
Authority: CN
Inventors: 王茂文
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-14
Filing date: 1992-09-14
Publication date: 1993-06-30
Anticipated expiration: 2002-09-14

Abstract

The utility model discloses an automatically adjusting height desk for drawing and writing, which is composed of a desktop, desk legs and a base. The desk legs are inserted into the guiding groove or the guiding cavity of the base; a swinging or pulling type lifting movable support is arranged under the desktop, and the movable support comprises an adjusting rod, a supporting rod and a return spring. The lower end of the supporting rod has an interdigital chip, and the opening of the interdigital chip is in mesh with the teeth on the angle iron bar on the base. The automatically adjusting height desk for drawing and writing utilizes the weights of the desktop and the desk legs, so as to make the desktop complete the lifting course in a seesaw type motion. The utility model has the advantages of simple structure, convenient operation and flexibility.

Description

Automatically adjusting height desk for drawing and writing

The utility model relates to a kind of furniture, especially Writing and drawing desk.

Number of patent application is 89208287.9 application documents, discloses " a kind of adjustable lifting table stool ", is made of desktop, table leg and screw elevating mechanism.Structure is comparatively complicated, regulates inconvenience.Particularly for big, heavy Writing and drawing desk, the screw rod of its elevating mechanism is longer, is difficult for promoting.

The purpose of this utility model is a kind of deadweight lift Writing and drawing desk of design, makes its lifting convenient, flexibly, and is simple in structure, draws a picture a kind of adjustable height and spacious desktop are provided for the juvenile practises book.

The purpose of this utility model is achieved in that it is made of desktop, table leg and base, and table leg is connected in by connector below the desktop, and insert in the guide groove or guide cavity of base the table leg lower end.Swing or pulling lifting flexible staybolt are installed below the desktop, and flexible staybolt includes adjusting rod, strut and return spring and constitutes.Adjusting rod one end is socketed in below the desktop by bent sections sheet, and the strut lower end is interdigital.Tooth on the angle iron stay on its prong and the base is meshed.Four base legs on the base form guide groove or guide cavity between two legs.Leg outer side is equipped with stable screw, is positioned between two base legs of desktop both sides to be connected with reinforcing strip respectively, and the outside is linked to each other by closure plate.Be fixed with foot pedal between the reinforcing strip of both sides, upper end and position, middle and upper part have a connecting rod respectively between the two base legs of back, vertically fix two toothed angle iron stays between two connecting rods side by side.

Below in conjunction with description of drawings, structure of the present utility model is further described.

Fig. 1 is the structure chart of the utility model employing swing type flexible staybolt.

Fig. 2 is the structure chart of the utility model employing extending type flexible staybolt.

Referring to accompanying drawing, the utility model mainly partly is made up of desktop 10, table leg 9 and base 18 3, and table leg 9 is below connector 11 is connected in desktop, and insert in the guide groove or guide cavity of base the lower end of table leg.Swing or pulling lifting flexible staybolt are installed below the desktop, and flexible staybolt includes adjusting rod 15, strut 12 and return spring 7.Adjusting rod 15 is socketed in by bent sections sheet 16 below the desktop, and the strut lower end is interdigital 6, and the tooth on the angle iron stay 5 on its prong 19 and the base is meshed.Base is provided with four base legs 3, forms guide groove or guide cavity 17 between two legs, and leg outer side is equipped with stablizes screw 8.3 of two base legs that are positioned at the desktop both sides are connected with a reinforcing strip 2 respectively, and the outside is linked to each other by closure plate 1.Be fixed with a foot pedal 4 between the reinforcing strip of both sides, upper end between the two base legs of back and position, middle and upper part are respectively equipped with and vertically fix two toothed angle iron stays 5 between a connecting rod 20, two connecting rods side by side.

Structure chart for the utility model employing swing type lifting flexible staybolt shown in Figure 1, its flexible staybolt includes adjusting rod 15, strut rail 13, return spring 7 and strut 12.Adjusting rod 15 front ends are expansion link, and the plush copper one on rear end and the strut rail 13 is reinstated axle and is connected below the desktop, constitute rotating fulcrum 14.Strut is two of symmetry, is connected side by side on the connection strap 21 between the table leg of back by loose-leaf, and the strut upper end is approaching with the strut rail two ends respectively, and the lower end is interdigital, and the tooth on two angle iron stays on its prong 19 and the base is meshed.In the base leg is up-narrow and down-wide guide groove.During use table leg inserted the base guide groove, when transferring to certain altitude, interdigital lower end prong of two lifting flexible staybolts just with angle iron stay on tooth engagement (this moment, flexible staybolt top almost contact with the flexible staybolt crosspiece), thereby stoped the continuation of desktop to descend, desktop is in maximum height at this moment.Extract the flexible staybolt expansion link out with hand, rock from side to side, forward and backward moving done at the crosspiece two ends respectively, and under the synergy of flexible staybolt spring, forcing flexible staybolt strut and interdigital is the forward and backward swing of fulcrum with the turning cylinder.When an end of crosspiece promoted its flexible staybolt strut top that contacts, the tooth on its interdigital terminal prong and the angle iron stay broke away from.Naturally descend because this side desktop is slightly heavy this moment; Meanwhile, the tooth root both sides on the angle iron stay are blocked in another movable brace rod prong both sides of the edge, have guaranteed desktop unlikely slip of making horizontal direction in run-off the straight.When desktop tilted to a certain degree, two table legs of the higher side of desktop just contacted with the sealing plank, thereby had stoped the continuation of desktop to be tilted.When an end of flexible staybolt crosspiece is mobile forward, no longer act on flexible staybolt, this flexible staybolt strut is under the effect of spring, and its interdigital terminal prong is meshed with the tooth of angle iron stay.The situation of another flexible staybolt strut is just in time opposite.The expansion link that so constantly rocks from side to side, desktop just can constantly descend.Because the base leg is up-narrow and down-wide, progressively to tilt, its gradient is constant when having guaranteed desktop decline.When desktop is reduced to desired height, it is adjusted to level (by shaking table top), again expansion link is contracted to the table edge.This moment, the place ahead two table legs were near the place ahead two base leg top inner faces owing to the gravity reason, and desktop is very stable.If lifting is frequent, then needn't tighten the screw of stablizing desktop.During rising, the user stands in a side of table (left side or right side), shakes desktop gently, and it just can raise in doing the motion of teeterboard formula.Because when a side desktop raises, the lifting movable brace rod of homonymy also slightly raises, and along with " teeterboard " formula motion of desktop, interdigital terminal prong of flexible staybolt just constantly climbed along the tooth of angle iron stay, so table top constantly raises.

Shown in Figure 2 the adjusting rod of flexible staybolt is two for the utility model adopts the structure chart of extending type lifting flexible staybolt, is socketed in below the desktop with bent sections sheet 16 respectively.The handle front end for the handle 22, the lower end each link to each other with a pull bar 23, the other end of two pull bars respectively with strut on interdigital 6 link to each other.The upper end of strut 12 is connected below the desktop 10 by loose-leaf 24 and connector 11.The lifting principle of this flexible staybolt is identical with Fig. 1, and operation is different when just descending.During decline, the right-hand man alternately spurs the handle 22 on the adjusting rod, and desktop can be done to descend in the motion of " teeterboard " formula.The two legs of base 18 left and right sides is inside and outside by closure plate 1 sealing, forms a guide cavity.

The utility model compared with prior art, its outstanding effect is to take full advantage of the weight of desktop, table leg self, make desktop finish the ascending, descending process in doing the motion of " teeterboard " formula, draw a picture the spacious desktop of ideal height is provided for the juvenile practises book, also the utmost point is beneficial to the adult, child share. Simultaneously, simple in structure, easy to use, be easy to promote.

Claims

1, a kind of deadweight lift Writing and drawing desk is made of desktop 10, table leg 9 and base 18, and table leg 9 is connected in via connector 11 below the desktop, and insert in the guide groove or guide cavity 17 of base table leg 9 lower ends, it is characterized in that:

(1) swing or pulling lifting flexible staybolt are installed on the desktop bottom surface, flexible staybolt includes adjusting rod 15, strut 12 and return spring 7, one end of adjusting rod is socketed in by bent sections sheet 16 below the desktop, and the strut lower end is interdigital 6, and the tooth 5 on the angle iron stay on its prong 19 and the base is meshed;

(2) base is provided with four base legs 3, article two, 3 formation guide grooves of base leg or guide cavity 17, leg outer side is equipped with stablizes screw 8, is positioned between two base legs of desktop both sides to be connected with a reinforcing strip 2 respectively, the outside is linked to each other by closure plate 1, is fixed with pedal 4 between the reinforcing strip of both sides.Upper end between the next two base legs and position, middle and upper part are connected with respectively and vertically fix two toothed angle iron stays 5 between a connecting rod 20, two connecting rods side by side.

2, according to the said deadweight lift of claim 1 Writing and drawing desk, when it is characterized in that flexible staybolt that desktop is installed below is swing type lifting flexible staybolt, its adjusting rod 15 front ends are expansion link, plush copper one on rear end and the strut rail is reinstated axle and is connected and forms rotating fulcrum 14 below the desktop, strut is two of symmetry, be connected side by side by loose-leaf 24 on the table leg connecting rod 21 of back, the strut upper end is approaching with strut rail 13 two ends, the lower end is interdigital 6, tooth on two angle iron stays 5 on prong 19 below two interdigital and the base is meshed, and forms up-narrow and down-wide guide groove between two base legs of both sides.

3, according to the said deadweight lift of claim 1 Writing and drawing desk, when it is characterized in that flexible staybolt that desktop is installed below is extending type lifting flexible staybolt, its adjusting rod 15 is two, front end is handle 22, be socketed in below the desktop with bent sections sheet 16 respectively, each links to each other adjusting rod 15 lower ends with a pull bar 23, two pull bars respectively with strut on interdigital link to each other, be connected below the desktop with loose-leaf 24 and connector 11 above the strut 12, below prong be meshed with tooth on two angle iron stays 5 on the base respectively, the two legs of the base left and right sides is inside and outside to form guide cavity by closure plate 1 sealing.