CN209404143U - A kind of universal caster wheel of auto-steering locking - Google Patents

Abstract

A kind of universal caster wheel of auto-steering locking, pulley base lower end offers slide block slot, slide block slot lower end two sides offer wheel shaft through-hole, spring is placed in slide block slot, the lower spring end is placed with sliding block, two axis holes issued up and down are offered on sliding block, wheel shaft is provided in axis hole, wheel shaft passes through the wheel shaft through-hole of two sides, the both sides of wheel shaft are provided with the flange collar of protrusion, the diameter of flange collar is slightly larger than the diameter of wheel shaft, flange collar rear end is provided with the groove being recessed inwardly, the both sides of wheel shaft are mounted on pulley, it can play the role of an office chair by sliding after people sits on chair into line-locked, effectively prevent the sliding of office chair everywhere, the position of fixed office chair, when effectively avoiding office or meeting, office chair slides everywhere and influences the efficiency of office；The case where design of design and biconvex circle and dual-cavity on wheel shaft can play an effectively firm installation effect after wheel shaft is mounted with pulley, and effective anti-limited slip wheel falls off after use.

Description

A kind of universal caster wheel of auto-steering locking

Technical field

The utility model relates to pulleys, more particularly, to a kind of universal caster wheel of auto-steering locking.

Background technique

Office chair, English office chair refer in routine work and social activities for work is convenient and is equipped with each Kind chair.Office chair is divided into narrow sense and broad sense by OfficeMate office partner, and the office chair of narrow sense refers to people in sitting posture state Lower to carry out the chair sat when desktop work, the office chair of broad sense is all chairs for office, including executive chair, in Class's chair, chair of receiving a visitor, office worker's chair, conference chair, visitor's chair, training chair etc..

Current office chair underfooting is mounted on pulley, easily band when pulley current at that time readily occurs in office The case where dynamic office chair slides everywhere, makes troubles to office, while the pulley of office chair is easy to happen the case where wheel falls off, The case where office chair disequilibrium is easy to happen after falling off makes the people being sitting on office chair tumble, while having pulley some Children's chairs on be also easy to happen children and arbitrarily slide, because the direction that children can not control sliding well makes it easy to occur Collision is unexpected.

Utility model content

The utility model is to overcome above situation insufficient, it is desirable to provide a kind of technical solution that can solve the above problem.

A kind of universal caster wheel of auto-steering locking, comprising: pulley base, the pulley base lower end offer slide block slot, institute Slide block slot is stated since a top and four side walls form, slide block slot lower end two sides offer wheel shaft through-hole, the wheel shaft Through-hole runs through two walls of slide block slot, and the wheel shaft through-hole lower end is provided on the side wall at the both ends of slide block slot downwardly convex Convex block is placed with spring in the slide block slot, and the lower spring end is placed with sliding block, and the sliding block is identical as sliding block groove shape, Slightly smaller than slide block slot, two axis holes issued up and down are offered on the sliding block, and the axis hole runs through sliding block, the side of the axis hole To wheel shaft through-hole is faced, wheel shaft is provided in the axis hole, the wheel shaft passes through the wheel shaft through-hole of two sides, extends to two sides；

The both sides of the wheel shaft are provided with the flange collar of protrusion, and the diameter of flange collar is slightly larger than the diameter of wheel shaft, the flange collar Rear end is provided with the groove being recessed inwardly, and the both sides of the wheel shaft are mounted on pulley, are respectively provided on the pulley inner face There are several card slots around center of circle distribution.

As a further solution of the present invention: the pulley base upper end offers mounting hole.

As a further solution of the present invention: being equipped with mounting rod on the mounting hole.

As a further solution of the present invention: the width of the card slot is slightly larger than the width of convex block.

As a further solution of the present invention: the elastic limit of the spring is 7.1 kilograms

Compared with prior art, the utility model has the beneficial effects that

1, an office chair by sliding can be played the role of after people sits on chair into line-locked, effectively prevented The sliding of office chair everywhere, the position of fixed office chair, when effectively avoiding office or meeting, office chair slides and shadow everywhere Ring the efficiency of office；

2, the design with biconvex circle and dual-cavity is designed on wheel shaft, can be after wheel shaft be mounted with pulley, playing one has The case where firm installation effect of effect, effective anti-limited slip wheel falls off after use, avoids chair shakiness after falling off and falls down Situation.

3, the utility model can be installed on children's seat, to play one after children sit on children's seat The effect that children's chairs are slided everywhere is prevented, children's chairs is prevented to be easy sliding and bump against other foreign objects, and causes children injured.

The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description In become obvious, or recognized by the practice of the utility model.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property It puts, is also possible to obtain other drawings based on these drawings.

Fig. 1 is the utility model structure diagram.

Fig. 2 is the utility model explosive view.

Fig. 3 is the utility model middle pulley holder structure schematic diagram.

Fig. 4 is the utility model middle pulley seat main view.

Fig. 5 is the utility model middle pulley seat bottom schematic view.

Fig. 6 is slide block structure schematic diagram in the utility model.

Fig. 7 is axle structure illustration in the utility model.

Fig. 8 is the utility model middle pulley structural schematic diagram.

In figure: 1, mounting rod, 2, pulley base, 3, spring, 4, sliding block, 5, wheel shaft, 6, pulley, 21, mounting hole, 22, wheel shaft Through-hole, 23, convex block, 24, slide block slot, 41, axis hole, 51, flange collar, 52, groove, 61, card slot.

Specific embodiment

Below by the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described Embodiment is only the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to The range of the utility model protection.

Please refer to Fig. 1~8, in the utility model embodiment, a kind of universal caster wheel of auto-steering locking, comprising: pulley Seat 2,2 lower end of pulley base offer slide block slot 24, and the slide block slot 24 is described since a top and four side walls form 24 lower end two sides of slide block slot offer wheel shaft through-hole 22, and the wheel shaft through-hole 22 runs through two walls of slide block slot 24, and the wheel shaft is logical 22 lower end of hole is provided with downwardly convex convex block 23 on the side wall at the both ends of slide block slot 24, is placed in the slide block slot 24 Spring 3,3 lower end of spring are placed with sliding block 4, and the sliding block 4 is identical as 24 shape of slide block slot, slightly smaller than slide block slot 24, institute Two axis holes 41 for offering on sliding block 4 and issuing up and down are stated, the axis hole 41 runs through sliding block 4, the direction face of the axis hole 41 Wheel shaft through-hole 22, wheel shaft 5 is provided in the axis hole 41, the wheel shaft 5 passes through the wheel shaft through-hole 22 of two sides, prolongs to two sides It stretches；

The both sides of the wheel shaft 5 are provided with the flange collar 51 of protrusion, and the diameter of flange collar 51 is slightly larger than the diameter of wheel shaft 5, institute It states 51 rear end of flange collar and is provided with the groove 52 being recessed inwardly, pulley 6 is increased by the design of biconvex circle 51 and groove 52 and is installed In soundness above, effective anti-limited slip wheel 6 falls off, and the both sides of the wheel shaft 5 are mounted on pulley 6, and pulley 6 passes through wheel Axis 5 is installed to the two sides of pulley base 2, and several card slots 61 around center of circle distribution are provided on 6 inner face of pulley, described The width of card slot 61 is slightly larger than the width of convex block 23, and convex block 23 is snapped onto groove 52.

2 upper end of pulley base offers mounting hole 21, is equipped with mounting rod 1 on the mounting hole 21, passes through mounting rod 1 Pulley base 2 is installed in chair leg.

The elastic limit of the spring is 7.1 kilograms, and allowing to for pulley being installed to can equally carry out in children's chairs Use, avoid children can not key spring 3 depress the case where.

The working principle of the utility model is: pulley base 2 is installed in the chair leg of office chair by mounting rod 1, work as people When sitting on chair, chair leg is pushed, so that pulley base 2 be pushed, spring 3 is compressed, so that 4 upward sliding of sliding block, phase Pair pulley 6 forward to pushing, and the convex block 23 on pulley base 2 is pressed into the card slot 61 of pulley 6, so that the rotation of pulley 6 It is restricted, the sliding of office chair is locked, prevents office chair from sliding everywhere；

After people leaves chair, the pressure on chair disappears, and chair leg pressure disappears, and pulley base 2 gos up, the pressure on spring 3 Power disappears simultaneously, and spring 3 is sprung back, to sliding block 4 be pushed down on, so that the convex block 23 on pulley base 2 leaves the card slot on pulley 6 61, so that pulley 6 restores rotation, office chair is allowed freely to slide.

It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting Related claim.

Claims (5)

1. a kind of universal caster wheel of auto-steering locking, comprising: pulley base, which is characterized in that the pulley base lower end offers Slide block slot, for the slide block slot since a top and four side walls form, slide block slot lower end two sides offer wheel shaft through-hole, The wheel shaft through-hole runs through two walls of slide block slot, the wheel shaft through-hole lower end, be provided on the side wall at the both ends of slide block slot to The convex block of lower convexity, spring is placed in the slide block slot, and the lower spring end is placed with sliding block, the sliding block and sliding block flute profile Shape is identical, slightly smaller than slide block slot, two axis holes issued up and down is offered on the sliding block, the axis hole runs through sliding block, described The direction of axis hole faces wheel shaft through-hole, wheel shaft is provided in the axis hole, the wheel shaft passes through the wheel shaft through-hole of two sides, to two Side extends；

The both sides of the wheel shaft are provided with the flange collar of protrusion, and the diameter of flange collar is slightly larger than the diameter of wheel shaft, the flange collar rear end It is provided with the groove being recessed inwardly, the both sides of the wheel shaft are mounted on pulley, are provided with and enclose on the pulley inner face Around several card slots of center of circle distribution.

2. a kind of universal caster wheel of auto-steering locking according to claim 1, which is characterized in that the pulley base upper end Offer mounting hole.

3. a kind of universal caster wheel of auto-steering locking according to claim 2, which is characterized in that pacify on the mounting hole Equipped with mounting rod.

4. a kind of universal caster wheel of auto-steering locking according to claim 1, which is characterized in that the width of the card slot Slightly larger than the width of convex block.

5. a kind of universal caster wheel of auto-steering locking according to claim 1, which is characterized in that the elasticity of the spring The limit is 7.1 kilograms.