CN2637218Y

CN2637218Y - Telescopic universal wheel device

Info

Publication number: CN2637218Y
Application number: CN 03251992
Authority: CN
Inventors: 张鸿飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-07-15
Filing date: 2003-07-15
Publication date: 2004-09-01
Anticipated expiration: 2013-07-15

Abstract

The utility model belongs to the technical field of bearing machine. The utility model relates to a telescopic universal wheel device which can move after extending and can be fixed after retraction, comprising an objects connection component, fixed supporting components, a lifting mechanism and location components. The objects connection component is a connection cover (7) which is fixed to the bottom of an object by screws. The fixed supporting components comprise a sleeve (3) and a snap spring (2). The lift mechanism which comprises a lifting plug (4) and a universal wheel (1) is arranged in the sleeve (3). The bottom of the lifting plug (4) is connected with the universal wheel (1) by bolt. The location components comprise a pin (6) and a location key (5). The novel telescopic universal wheel device can be regulated, so when the object with universal wheel device is needed to move, the universal wheel is put down and the object is pushed to go. When the object reaches the place, the universal wheel can be retracted to the sleeve.

Description

Scalable universal wheel unit

Technical field

The utility model belongs to the carrying field of mechanical technique, relates to a kind of universal wheel unit, can move the scalable universal wheel unit that can fix after the indentation after specifically a kind of the stretching out.

Background technology

Cardan wheel is a kind of mobile device that is widely used in utensil, article, as movable swivel chair, refrigerator and laundry support etc., especially moves the used shelf of large heavy article cardan wheel all is housed.Common cardan wheel can only be used as mobile object, and uses in operation or working process when having universal wheel unit, must it can not be moved, otherwise device is just stable inadequately, as long as external force effect more a little will make movement of objects.This defective of common cardan wheel has all brought inconvenience for operation and life.

The Chinese patent communique discloses some cardan wheel technology." universal wheel unit of overall plastic stake body " (CN2424034Y), comprise stake body, stake body has inner chamber to lay sport ball (and fulcrum ball), and the inner chamber periphery is provided with continuously or the outside thread that is interrupted is used to mesh rotation set stop cover, and the adjacent surface of stake body and institute's carrying object is provided with mounting hole.The universal wheel unit of this overall plastic stake body is simple in structure, and constituent part is few, and cost is low, easy to manufacture.But this device only is suitable for moving of object, after object puts in place, but can not play the effect of fixed object.

" scalable universal caster wheel " (CN 2496686Y), it is a kind of scalable universal caster wheel that the object bottom is used to walk that is contained in, this castor has one and table leg bonded assembly wheel body, wheel carrier is housed in the wheel body, locating bush moving up and down is equipped with in the upper end in the wheel carrier, cardan wheel is equipped with in its lower end, positioning component is equipped with in the joint portion of wheel carrier and locating bush, adjust up and down between locating bush and the wheel body inner top, feasible needs can put down cardan wheel when the position will be housed after the movement of objects of castor, promote its walking of rolling; Then cardan wheel can be packed up after object puts in place, make castor not rotate and object is fixed.This device can mobile object, again can fixed object.But it is many that this device exists number of parts, and big portion part adopts metallic material to manufacture, problem such as when cost height, set-up cost.

Summary of the invention

The purpose of this utility model provides a kind of scalable universal wheel unit.It can not only mobile object, again can fixed object, and also simple in structure, cost is low, and is easy to use.

The utility model includes and object coupling assembling, fixed pedestal assembly, lifting mechanism, positioning component four parts.

With the object coupling assembling be connection cover 7.The caping of connection cover 7 can adopt connection modes such as screw, latch with the device captive joint that uses cardan wheel.Connection cover 7 is fixed on the sleeve 3 of supporting component, is used for sealing the lifting mechanism in the supporting component, makes it can not be separated from supporting component, is limited to the internal motion of supporting component.

The fixed pedestal assembly comprises sleeve 3 and jump ring 2.Sleeve 3 is a hollow cylinder, and top and bottom are unlimited, and the same connection cover in upper end (7) is fixing.There is a groove inwall lower end of sleeve 3, and jump ring 2 embeds grooves and close fit with it.Lifting mechanism is installed in the sleeve 3, and can be in sleeve 3 up-and-down movement.Move downward to stretching out, limit the degree of stretching out by jump ring 2; Upward movement is indentation, limits the indentation degree by connection cover 7

Lifting mechanism places the inside of sleeve 3, comprises lifting plug 4 and cardan wheel 1.The bottom of lifting plug 4 is connected with wheel flutter 1 by bolt.The cylindrical cross-section diameter of lifting plug 4 will be equal to or slightly less than the diameter of sleeve 3 inner wall sections, make lifting plug 4 when stretching out and the axis of sleeve 3 be consistent.The height sum of wheel flutter 1 and lifting plug 4 is less than or equals the height sum of sleeve 3 and connection cover 7 inwalls.

Positioning component comprises bearing pin 6 and positioning key 5.Have a location keyhole 8 on the top of sleeve 3 sides, bearing pin 6 is positioned at the vertical center of location keyhole 8 and is fixed on sleeve 3 walls.Bearing pin 6 passes the center of positioning key 5 and it is positioned on the keyhole 8 of location, and positioning key 5 can be stirred rotation.When lifting mechanism stretches out, to stir positioning key 5 and make its rotation, the part of positioning key 5 enters sleeve 3 inboards, can block lifting plug 4 and make it can not up-and-down movement.Therefore, the height of lifting plug 4 equals the top distance to positioning key 5 of jump ring 2.

The beneficial effects of the utility model: it changes original cardan wheel structure into Collapsible structure, and cardan wheel is optionally adjusted.When object of the present utility model being housed fixedly the time, lifting plug 4 is packed up cardan wheel 1, hides in the sleeve 33 fixing and supporting roles of sleeve; When the article needs are mobile, only article need be lifted gently and fall cardan wheel 1, stir positioning key 5 its part is entered in the sleeve 3, block lifting plug 4, get final product random mobile article, convenient and swift.The utility model is simple in structure, and is easy to use, both can support mobile object, but fixed pedestal object again.

Description of drawings

Fig. 1 is a cardan wheel indentation status architecture scheme drawing of the present utility model.1 is cardan wheel among the figure, 2 jump rings, 3 sleeves, 4 lifting plugs, 5 positioning keys, 6 bearing pins, 7 connection covers.

Fig. 2 is constructional drawing of the present utility model and specification digest accompanying drawing, also is that cardan wheel stretches out view.

Fig. 3 is the scheme drawing that has location keyhole 8 on the sidewall of fixation kit middle sleeve 3 of the present utility model

Wherein Fig. 1 shows cardan wheel 1 indentation state of the present utility model, and lifting plug mechanism all hides in the fixed muffle 3, and sleeve 3 plays the effect of fixed pedestal article.Fig. 2 shows cardan wheel 1 of the present utility model and stretches out state, when needs move when object of the present utility model is housed, object can be lifted gently, lifting mechanism relies on self gravitation to fall automatically, stir positioning key 5 then, block lifting plug 4 tops, make cardan wheel support ground, beginning any direction mobile article.Article are stirred positioning key 5 and are kept in the center after moving to the position that needs, and lifting mechanism returns in the fixed muffle 3, and fixed muffle 3 plays the holding articles effect, and article enter stationary state.

The specific embodiment

Of the present utility model and object coupling assembling is a connection cover 7, as illustrated in fig. 1 and 2.For with other object captive joint, there is a big hole at connection cover 7 centers, and four small sircle holes of rectangular distribution are fixed with the bottom of other thing with bolt by big hole and small sircle hole all around.

Repair in order to dismantle and to be convenient to, connection cover 7 and sleeve 3 adopt the mode of spiral to be fixed together, and can take out bearing pin 6 at an easy rate like this, unload positioning key 5.

The shape of the location keyhole 8 of sleeve 3 sidewalls is identical with the shape of positioning key 5.In order to make positioning key 5 stably block lifting plug 4, can two or more positioning keys 5 be installed in sleeve 3 equal height positions as required, two or more positioning keys 5 block lifting plug 4 jointly, and two or more positioning keys 5 are equally spaced.

For making lifting plug 4 be easy to move up and down in sleeve 3, and both axis are consistent, the cylindrical cross-section diameter of lifting plug 4 is less than 2 millimeters of the diameters of sleeve 3 inner wall sections.

The height sum of wheel flutter 1 and lifting plug 4 equals the height sum of sleeve 3 and connection cover 7 inwalls.

Claims

1, a kind of scalable universal wheel unit, it is characterized in that comprising and object coupling assembling, fixed pedestal assembly, lifting mechanism, positioning component four parts, with the object coupling assembling be connection cover (7), the fixed pedestal assembly comprises sleeve (3) and jump ring (2), lifting mechanism places the inside of sleeve (3), comprise lifting plug (4) and cardan wheel (1), positioning component comprises bearing pin (6) and positioning key (5); Connection cover (7) is fixed on the sleeve (3) of supporting component, sleeve (3) is a hollow cylinder, top and bottom are unlimited, the same connection cover in upper end (7) is fixing, there is a groove inwall lower end of sleeve (3), jump ring (2) embeds groove and close fit with it, the bottom of lifting plug (4) is connected with wheel flutter (1) by bolt, the cylindrical cross-section diameter of lifting plug 4 is equal to or slightly less than the diameter of sleeve 3 inner wall sections, the height sum of wheel flutter (1) and lifting plug (4) is less than or equals the height sum of sleeve (3) and connection cover (7) inwall, have a location keyhole (8) on the top of sleeve (3) side, bearing pin (6) is positioned at the vertical center of location keyhole (8) and is fixed on sleeve (3) wall, bearing pin (6) passes the center of positioning key (5) and it is positioned on the location keyhole (8), and the height of lifting plug (4) equals the top distance to positioning key (5) of jump ring (2).

2, scalable universal wheel unit according to claim 1 is characterized in that there is a big hole at connection cover (7) center, and four small sircle holes of rectangular distribution are fixed with the bottom of other thing with bolt by big hole and small sircle hole all around.

3, scalable universal wheel unit according to claim 2 is characterized in that connection cover (7) and sleeve (3) are fixed together with the mode of spiral.

4, scalable universal wheel unit according to claim 3 is characterized in that the shape of the same positioning key of shape (5) of location keyhole (8) of sleeve (3) sidewall is identical.

5, scalable universal wheel unit according to claim 4 is characterized in that in sleeve (3) equal height position two or three positioning keys (5) being installed, and positioning key (5) is equally spaced.

6, according to claim 3 or 4 or 5 described scalable universal wheel units, the cylindrical cross-section diameter that it is characterized in that lifting plug (4) is less than 2 millimeters of the diameters of sleeve (3) inner wall section.

7,, it is characterized in that the cardan wheel (1) and the height sum of lifting plug (4) equal the height sum of sleeve (3) and connection cover (7) inwall according to claim 3 or 4 or 5 described scalable universal wheel units.