CN2599984Y - Desk with device for adjusting height - Google Patents

Abstract

The utility model relates to a classroom desk which is characterized in that a transmission shaft is arranged through both sides of an inner and an outer pipe of table corners; cogs is provided on each end of the transmission shaft; and also an actuating tongue is provided on one end of the transmission shaft; the cogs on the transmission shaft is meshed with a rack and the actuating on the transmission is inserted into a unlocking trough with a revolving button; the revolving button includes a revolving head-on both sides of the revolving head arranged a lock-opening trough and a fixed concave trough, an actuating cover, a revolving handle, two half-round actuating sheets and an actuating ring, wherein, the actuating cover is covered on the revolving head; the fixed concave trough on one end of the revolving head is inserted into a fixed plug in the revolving handle; while the unlocking trough on the end is fastened with the two half-round actuating sheets and then is tightened by the actuating ring and fixed on the outer pipe. The utility model solves the problem that lifting tables in prior art are difficult to regulate, with unsold position, high cost and low efficiency whereas the utility model has the advantages of simple structure, solid position, easy regulation and low cost especially suitable for students.

Description

The novel elevating desk

Technical field

The utility model relates to a kind of desk, particularly a kind of novel elevating desk.

Background technology

The student with advancing age, height constantly increases, and the desk of most schools remains highly fixing desk, can not regulate according to student's different heights, causes myopia and hunchback easily, and is very harmful to student's health.Therefore the novel elevating desk that designs a kind of suitable student's use is very necessary.Existing lifting desk kind is more, and a class is to regulate the height of desktop by liftable column, and has fastening bolt to position.It has regulate inaccurate, Fei Li shortcoming relatively; And in use, be prone to the sliding dental phenomenon of bolt, and cause the unsettled phenomenon of location height not firm, desk to occur, be that the utility model patent of CN87208863U just belongs to this type of as notification number.Another kind of is the height of regulating desktop by the lowering or hoisting gear of worm and gear, it has solved above-mentioned desk and has regulated inaccurate, in use be prone to the sliding dental phenomenon of bolt, cause and height problem of unstable not firm, desk occurs locating, but the lowering or hoisting gear of this worm and gear has the shortcoming that adjusting is relatively required great effort, cost is high, and efficient is low especially, often worm and gear rotates tens circles, regulate highly just several centimeters, as Granted publication day be December 26 calendar year 2001, Granted publication number just belongs to this type of for the utility model patent of CN2466972Y.Also have a class only to adopt the lowering or hoisting gear of gear and tooth bar to regulate the height of desktop, it has the not firm shortcoming in location, occurs desktop easily and falls automatically.

Summary of the invention

Technical problem to be solved in the utility model is the deficiency at existing product, and a kind of novel elevating desk is provided, and it has solved existing same table adjusting and has relatively required great effort, locatees problem not firm, that cost is high and efficient is low especially.

The technical solution of the utility model be achieved in that it comprise desktop and be with in, the table pin of outer tube, it is characterized in that: pass a pin in, a power transmission shaft is equipped with at the outer tube two ends, the power transmission shaft two ends have the gear teeth, wherein an end also is provided with the braking tongue, the gear teeth on the power transmission shaft are meshed with tooth bar on the interior pipe, braking tongue on the power transmission shaft is inserted in turning knob and unblanks in the groove, turning knob is had the knob head of unblank groove and fixed groove by two ends, the braking sleeve envelope, the knob handle, two blocks of semicircle brake(-holder) blocks and trig loop are formed, the braking sleeve big envelope is on the knob head, the fixed groove of the first end of knob is inserted in the steady pin of knob handle, the groove of unblanking of the other end is locked by trig loop after snapping in two blocks of semicircle brake(-holder) blocks, and is fixed on the outer tube.The straight line of semicircle brake(-holder) block is provided with hook and stumbles, and hook is stumbled and is stuck in the groove of knob head; Bearing is equipped with at two ends at the turning cylinder upper exterior tube.

The utility model adopts the braking tongue of unique design and semicircle brake(-holder) block to come motion of driven gear axle and braking, and it has simple in structure, firm position, adjusting is light, cost is low advantage.

Description of drawings

Fig. 1 is the utility model structural representation

Fig. 2 is the utility model side view

Fig. 3 is the cutaway view of the utility model lowering or hoisting gear

Fig. 4 is that the utility model A-A is to cutaway view

Fig. 5 is the structural representation of the utility model knob head

Fig. 6 is the utility model knob head rearview

The structural representation that Fig. 7 stumbles for the utility model hook

The side view that Fig. 8 stumbles for the utility model hook

Fig. 9 is the structural representation of the utility model knob handle

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described further:

As Fig. 1, shown in Figure 3, the utility model comprises desktop and is with outer tube 1, the table pin of interior pipe 2, pass a pin outer tube 1, a power transmission shaft 3 is equipped with at the two ends of interior pipe 2, the power transmission shaft two ends have the gear teeth 4, wherein an end also is provided with braking tongue 5, the gear teeth 4 on the power transmission shaft 3 are meshed with tooth bar 6 on the interior pipe, braking tongue 5 on the power transmission shaft is inserted in turning knob and unblanks in the groove 7, turning knob has the knob head 10 of unblank groove 7 and fixed groove 8 (as Fig. 5 by two ends, shown in Figure 6), braking sleeve envelope 11, knob handle 12, two blocks of semicircle brake(-holder) blocks 13,14 and trig loop 15 form, braking sleeve envelope 11 is enclosed within on the knob head 10, the fixed groove 8 of knob head 10 1 ends is inserted in the steady pin 9 of knob handle 12, the other end is loaded onto two blocks of semicircle brake(-holder) blocks 13,14 backs are locked by trig loop 15, and are fixed on the pin; As Fig. 7, shown in Figure 8, the straight line of semicircle brake(-holder) block 13,14 is provided with hook and stumbles 17, and hook is stumbled and 17 is stuck in the groove 7 of unblanking of knob head, as shown in Figure 4; Bearing 16,18 and 19 is equipped with at the two ends of turning cylinder 3 upper exterior tubes.

During use, rotation knob handle 12, brake(-holder) block hook are stumbled and 17 are clamped braking tongue 5 and drive power transmission shafts 3 and rotate, thereby make the gear teeth 4 drive tooth bars 6 oscilaltions.Because the diameter of semicircle brake(-holder) block 13,14 is bigger, and braking tongue 5 diameters are very little, therefore cause the moment great disparity, and the table body can't overcome semicircle brake(-holder) block 13,14 and the huge frictional force between the trig loop 15 and the effect that makes extremely full at dead point that causes when self falls, so can make desktop be stabilized in the interior arbitrary height of range; Conversely, drive the brake(-holder) block hooks by turning knob, the groove 7 of unblanking and stumble and 17 clamp braking tongue 5, can drive the gear teeth 4, tooth bar 6 motions easily, interior pipe 2 is with tooth bar 6 free liftings, and desktop is free lifting thereupon also.

Claims (3)

1, a kind of novel elevating desk, in it comprises desktop and is with, the table pin of outer tube, it is characterized in that: pass a pin in, a power transmission shaft is equipped with at the outer tube two ends, the power transmission shaft two ends have the gear teeth, wherein an end also is provided with the braking tongue, the gear teeth on the power transmission shaft are meshed with tooth bar on the interior pipe, braking tongue on the power transmission shaft is inserted in turning knob and unblanks in the groove, turning knob is had the knob head of unblank groove and fixed groove by two ends, the braking sleeve envelope, the knob handle, two blocks of semicircle brake(-holder) blocks and trig loop are formed, the braking sleeve big envelope is on the knob head, the fixed groove of the first end of knob is inserted in the steady pin of knob handle, the groove of unblanking of the other end is locked by trig loop after snapping in two blocks of semicircle brake(-holder) blocks, and is fixed on the outer tube.

2, according to a kind of novel elevating desk of claim 1, it is characterized in that: the straight line of semicircle brake(-holder) block is provided with hook and stumbles, and hook is stumbled and is stuck in the groove of unblanking of knob head.

3, according to a kind of novel elevating desk of claim 1 or 2, it is characterized in that: bearing is equipped with at the two ends of turning cylinder upper exterior tube.

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