CN2274444Y - Worm gear mechanism for lifting table legs - Google Patents

Abstract

The utility model relates to a worm gear mechanism for lifting table legs, which is composed of upper big legs, lower small legs, a machine seat plate, force feet, a power-assisted pedal, a worm gear pair body, a worm gear, etc. Two upper big legs are connected together by welding with the machine seat plate. Two lower small legs are composed by an electric welding with the power-assisted pedal through two force feet. The center of the machine seat plate is provided with a box body of the worm gear pair. Both ends of a transmission shaft are respectively provided with a bearing at the end of each of the two big sprocket shafts by top threads. A big sprocket is connected with a chain and is provided with a dead point, and is fixed at the upper end of each upper big leg through machine screws. The lower end of each upper big leg is suspended with a driven sprocket. The structure design of the utility model is subtle. Moreover, the utility model has easy use, and can meet the requirements of users better.

Description

Worm-gear type same table leg mechanism

The utility model relates to a kind of same table leg mechanism.

Traditional desk generally all is that it is highly changeless, this gives the child of study or the staff that office is write brings inconvenience undoubtedly, existing market has been sold a kind of desk that reaches the rising desktop by string machine screw, though this desk can lifting, all need at least two people's co-operation to finish but rise or fall at every turn, it is convenient inadequately to use.

The utility model is the deficiency at above-mentioned technology, provides a kind of rational in infrastructure, the convenient worm-gear type same table leg mechanism freely of oscilaltion.

The technical solution of the utility model is following realization: worm-gear type same table leg mechanism, this table leg has only two, every table leg adopts form of sleeve up big and down small, go up between the thigh for two and be linked to be by the machine seat board welding, two lower shanks are formed by connecting with two power pin and helping pedal electric welding, be provided with the worm gear casing at the machine seat board middle position, be connected with the machine seat board screw, prolong the power transmission shaft two that and be furnished with bearing at two hinge wheel shaft ends with jackscrew, the worm screw lower end of worm gear is provided with rocking handle, hinge wheel is connected with chain to be established a dead point and is fixed on the thigh upper end by the machine screw, with steel plate is outstanding a driven sprocket arranged in last thigh lower end, make on the chain with the driven chain cog in, establishing a dead point on lower shank is connected with the chain other end, be provided with swing handle in the thigh lower end, the hinge wheel neck is perpendicular with the spacing thick stick that is positioned on the thigh to locating to be fixed with the stroke thick stick.The transmission of this mechanism also can be adopted the steel wire rope transmission, at power transmission shaft two sheave is set respectively, and establishes fixedly steel wire rope one end of a dead point, in last thigh lower end small grooved wheel is set again, and steel wire rope is crouched in groove, and is fixed on the place, dead point of lower shank.

Characteristics of the present utility model: reasonable in design, simple, convenient, can satisfy user's needs preferably.

Accompanying drawing 1, worm-gear type same table leg mechanism front view;

Accompanying drawing 2, worm-gear type same table leg mechanism left view.

1 machine seat board, 2,2 ' goes up thigh, 3,3 ' lower shank, 4,4 ' power pin, 5 helping pedals, 6 worm gear casings, 7 worm gears, 8 glands, 9 power transmission shafts, 10 bearing holder (housing, cover)s, 11,11 ' jackscrew, 12,12 ' spacing thick stick, 13,13 ' stroke thick stick, 14,14 ' hinge wheel, 15,15 ' driven sprocket, 16,16 ' machine screw, 17,17 ' chain, 18,18 ' swing handle, 19,19 ' screw, 20,20 ' bearing, 21 rocking handles, 22 worm screws.

Worm-gear type same table leg mechanism as shown in drawings, its organic seat board 1, last thigh 2,2 ', lower shank 3,3 ', power pin 4,4 ', helping pedal 5, worm gear casing 6, worm gear 7, gland 8, power transmission shaft 9, bearing holder (housing, cover) 10,10 ', withered silk 11,11 ', spacing thick stick 12,12 ', stroke thick stick 13,13 ', hinge wheel 14,14 ', driven sprocket 15,15 ', machine screw 16, chain 17,17 ', swing handle 18,18 ' and screw 19,19 ', machine seat board 1 middle position is provided with worm gear casing 6, and power transmission shaft 9 two use jackscrew 11 at hinge wheel 14,14 ' shaft end is furnished with bearing 20,20 ', to reduce friction, bearing 20 outer tight fits have bearing holder (housing, cover) 10,10 ', chain 17,17 ' respectively with hinge wheel 14,14 ' connects into a dead point, draws lower chain 17,17 ', at last thigh 2,2 ' lower end hangs driven sprocket 15,15 ', make chain 17,17 ' goes up and driven sprocket 15, again chain is drawn in the 15 ' tooth, be provided with swing handle 18 in last thigh lower end, 18 ', at hinge wheel 14,14 ' neck is to locating to be fixed with stroke thick stick 13,13 ', and be positioned at thigh 2, the spacing thick stick 12 of 2 ' upper end, 12 ' is perpendicular, stroke thick stick 13 when desk is elevated to operational height like this, 13 ' will with spacing thick stick 12,12 ' contact, thereby top out, during use, as long as unscrew swing handle 18 earlier, 18 ', shake rocking handle 21 and just can reach the purpose of desktop oscilaltion easily, this cover mechanism uses laborsaving saving time, and simple to operate, conveniently, can satisfy user's needs preferably.

Claims (1)

1; A kind of Worm gear mechanism for lifting table legs; It is characterized in that: its organic seat board (1); Upper thigh (2) (2 '); Lower shank (3) (3 '); Power pin (4) (4 '); Helping pedal (5); Worm gear casing (6); Worm gear (7); Gland (8); Power transmission shaft (9); Bearing holder (housing, cover) (10) (10 '); Jackscrew (11) (11 '); Spacing thick stick (12) (12 '); Stroke thick stick (13) (13 '); Hinge wheel (14) (14 '); Driven sprocket (15) (15 '); Machine screw (16) (16 '); Chain (17) (17 '); Swing handle (18) (18 '); Screw (19) (19 '); Bearing (20) (20 '); Rocking handle (21) and worm screw (22); Be linked to be by machine seat board (1) welding between two upper thighs (2) (2 '); Two lower shanks (3) (3 ') firmly pin (4) (4 ') be connected with helping pedal (5) electric welding and or; Being provided with worm gear casing (6) at machine seat board (1) middle position is connected with machine seat board (1) screw; Prolong power transmission shaft (9) two that and be furnished with bearing (20) (20 ') with jackscrew (11) (11 ') at two hinge wheels (14) (14 ') shaft end; The worm screw of worm gear (22) lower end is provided with rocking handle (21); Hinge wheel (14) (14 ') is established a dead point and is fixed on upper thigh (2) (2 ') upper end by the machine screw with chain (17) (17 ') junction; With steel plate is outstanding a driven sprocket (15) (15 ') arranged in upper thigh (2) (2 ') lower end; Establishing a dead point at lower leg (3) (3 ') is connected with chain (17) (the 17 ') other end; Be provided with swing handle (18) (18 ') in upper thigh (2) (2 ') lower end; Hinge wheel (14) (14 ') neck is perpendicular with the spacing thick stick (12) (12 ') that is positioned at upper thigh (2) (2 ') upper end to locating to be fixed with stroke thick stick (13) (13 '); The transmission of this mechanism also can be adopted wire rope gearing; At power transmission shaft (9) two sheave is set; And establish fixedly steel wire rope one end of a dead point; In upper thigh (2) (2 ') lower end small grooved wheel is set again; Steel wire rope crouches in groove, and is fixed on the place, dead point of lower shank (3) (3 ').

Images