CN2394501Y

CN2394501Y - Lift device for table and chair

Info

Publication number: CN2394501Y
Application number: CN 99246689
Authority: CN
Inventors: 丁志利
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-10-12
Filing date: 1999-10-12
Publication date: 2000-09-06
Anticipated expiration: 2009-10-12

Abstract

The utility model relates to a lift device for tables and chairs, and the utility model can lift and change the height of a table top or a chair seat surface. The utility model comprises a lifting rod. The upper section of the lifting rod is provided with a thick column. The lateral surface of the thick column is provided with screw threads. The lateral surface of the lower section of the lifting rod is provided with a wide groove. The lifting rod is inserted into an inner cavity of an inner tube. The thick column is screwed with the upper end of the inner tube. The position that the tube wall of the inner tube is corresponding to the wide groove is provided with a column pin. The inner end of the column pin extends to the wide groove, and the outer end extends outward from the tube wall of the inner tube. The inner tube is inserted into an inner cavity of an outer tube. The lower end of the outer tube is fixed on a base which is fixed on a support frame. The lift device for tables and chairs can regulate the height without stage, and the utility model is firm and beautiful in appearance.

Description

The tables and chairs lowering or hoisting gear

The utility model relates to the device of height of table top or the conversion of chair base surface height lifting.

Present tables and chairs lowering or hoisting gear, mostly adopt a metallic plate, be drilled with the several holes that uses for lifting on the metallic plate, also have and adopt the cam-type structure, adjust the height of desktop or chair base surface by cam, the employing that also has is screwed in the elevating lever in the sleeve, adjust height by back-out or precession elevating lever, the former deficiency is a stepped height, great-jump-forward is adjusted, and the randomness of Height Adjustment can not satisfy, and the deficiency of the latter two is that stability and fastness are bad, the common drawback that exists of three all is an external, and is not attractive in appearance.

The purpose of this utility model provides a kind of stepless adjustment height, not only firmly, but also tables and chairs lowering or hoisting gear attractive in appearance.

This tables and chairs lowering or hoisting gear, comprise elevating lever, its design feature is that the epimere position of elevating lever is provided with the radially thick post of evagination, be threaded on the thick post side, the diminishing wide groove of one diameter is arranged on the side of elevating lever hypomere, elevating lever is inserted in the inner chamber of interior pipe, the upper end of its thick post and interior pipe spins, inner pipe wall can the inside and outside pin that moves corresponding to being equipped with of the position symmetry of wide groove, wide groove is stretched in the inner of pin, the outer end is protruding from inner pipe wall, and interior pipe is inserted in the inner chamber of outer tube, and expose at its position, upper end, the lower end of outer tube is fixed on the base, and base is fixed on the bracing frame.

For being suitable for and handled easily, the quantity of above-mentioned pin is that 1-2 is right, and it is conical that the inner of each pin is, and is provided with jack above thick post on the elevating lever.

Use this tables and chairs lowering or hoisting gear, when needs are adjusted the height of desktop or chair base surface, insert in the jack with a bull stick, holding bull stick rotates, drive on the elevating lever and move or move down, make pin be positioned at the bottom land of wide groove just, at this moment, pin and elevating lever, outer tube is in the state to be adjusted that disengages, again according to the height that needs to raise or reduce, move up or down interior pipe, and then drive elevating lever and move up or down identical distance, thereby realize the Height Adjustment of desktop or chair base surface, after Height Adjustment is good, again clockwise or rotate counterclockwise elevating lever with bull stick, make wide groove and pin produce displacement, even also the inner of pin is displaced on the inclined-plane from the bottom land of wide groove, under the pushing on inclined-plane, pin outwards moves, and its outer face closely contacts with the inwall of outer tube, be locked.

From the above mentioned, this tables and chairs lowering or hoisting gear can arbitrarily raise or reduction to desktop or chair base surface according to actual needs, realizes stepless adjustment, because elevating lever, interior pipe and pin are contained in the outer tube, has promptly adopted built-in elevating mechanism, thereby very attractive in appearance; Also, stressed even, thereby sturdy and durable because under user mode, pin is locked between elevating lever and the outer tube closely, and pin is the arrangement of radial symmetric again.

Accompanying drawing shows the embodiment of tables and chairs lowering or hoisting gear, wherein Fig. 1 is the perspective view of tables and chairs lowering or hoisting gear, Fig. 2 is the structural representation of elevating mechanism tables and chairs lowering or hoisting gear when being in state to be adjusted, and Fig. 3 is the structural representation of elevating mechanism tables and chairs lowering or hoisting gear when being in the lock state.

In the present embodiment, the tables and chairs lowering or hoisting gear comprises elevating lever 1, the epimere position of elevating lever 1 is provided with the radially thick post 2 of evagination, be threaded on thick post 2 sides, the top of thick post 2 is provided with jack 4 on the elevating lever 1, the diminishing wide groove 3 of one diameter is arranged on the side of the hypomere of elevating lever 1, elevating lever 1 is inserted in the inner chamber of interior pipe 5, its thick post 2 spins with the upper end of interior pipe 5, in pipe 5 tube walls can the inside and outside pin 6 that moves corresponding to being equipped with of wide groove 3 position symmetries, the quantity of pin 6 is that 1-2 is right, it is conical that the inner of each pin 6 is, and its taper shape stretches to wide groove, and the outer end of each pin 6 is protruding from interior pipe 5, interior pipe 5 is inserted in the inner chamber of outer tube 7, and expose at its position, upper end, and the lower end of outer tube 7 is fixed on the base 8, and base 8 is fixed on the bracing frame 9.When installing and using, the end face of elevating lever 1 is fixedlyed connected with the bottom surface of desktop or chair base surface, and bracing frame 9 is fixedlyed connected with the plastic cement pin of desk or chair.

Claims

1, a kind of tables and chairs lowering or hoisting gear, comprise elevating lever (1), the epimere position that it is characterized in that elevating lever (1) is provided with the radially thick post (2) of evagination, be threaded on the side of thick post (2), the diminishing wide groove of one diameter (3) is arranged on the side of the hypomere of elevating lever (1), elevating lever (1) is inserted in the inner chamber of interior pipe (5), its thick post (2) spins with the upper end of interior pipe (5), in pipe (5) tube wall can the inside and outside pin (6) that moves corresponding to being equipped with of the position symmetry of wide groove (3), wide groove (3) is stretched in the inner of pin (6), the outer end is protruding from interior pipe (5) tube wall, interior pipe (5) is inserted in the inner chamber of outer tube (7), and expose at its position, upper end, the lower end of outer tube (7) is fixed on the base (8), and base (8) is fixed on the bracing frame (9).

2, tables and chairs lowering or hoisting gear according to claim 1 is characterized in that the top of going up thick post (2) at elevating lever (1) is provided with jack (4).

3, tables and chairs lowering or hoisting gear according to claim 1, the quantity that it is characterized in that pin (6) is that 1-2 is right.

4, tables and chairs lowering or hoisting gear according to claim 3 is characterized in that the inner of each pin (6) is conical.