CN2140845Y

CN2140845Y - Sliding and skid-resistant pulley

Info

Publication number: CN2140845Y
Application number: CN 92234546
Authority: CN
Inventors: 陈秀华
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-25
Filing date: 1992-09-25
Publication date: 1993-08-25
Anticipated expiration: 2002-09-25

Abstract

The utility model relates to a sliding and skid-resistant pulley, which is composed of rollers at the both sides of a main body and braking elements which can select to install or not. The utility model is characterized in that a cap portion which is matched with the external shapes of the rollers is arranged on the main body. A middle wallboard is arranged along the cap. A shaft hole is arranged at the center of the wallboard. A connecting pipe which extends out upward is arranged at one side of the shaft hole, and a concave groove with a downward opening is arranged at the other side. A central which passes through the shaft hole and matches with the shaft hole is arranged at the both sides of the rollers. A plurality of spacer strips are arranged at the inner surface of the rollers. An interstice open space forms between each spacer strip. Minor axis pins for clamping or disengaging from the stopping of the interstice open space are arranged on the braking elements.

Description

Sliding and skid-resistant pulley

The utility model relates to a kind of pulley structure, and You Zhineng selects whether install braking components with single structure, and can make things convenient for the pulley structure that uses as the pulley that can brake or not brake simultaneously.

The general furniture of using as office seating, for moving it conveniently, all can be provided with pulley in seat bottom.This series products is put because of pulley adds has sizable ease of use.But some similar product then not only need make its convenient slip, also need be located in case of necessity to make it reason is not stressed and mobile.With general common furniture is example, needs by sliding when mobile except usual, after it is pushed into fixed point, need fixedly make its unlikely slip with again.

This early stage class furniture only merely is equipped with roller, and is rotatable during these roller stress.But after often the phase uses, realize and pulley must be made fixedly sometimes that it is mobile the sick bed of desired location (as be pushed into).Therefore be to have the pulley that contains brake gear to come out.

With the pulley of brake gear, it must be provided with relevant brake member in pulley, makes its integral structure and the pulley of general no brake member that sizable difference be arranged.And modern pulley is mostly with injection-moulding plastic, and therefore the pulley that can brake is essential uses a kind of mould, and the pulley that can not brake then need use another kind of mould, and is quite uneconomical.

And in factory, make on the practice, the pulley of these two kinds of non-congenerous also can't substitute mutually.That is if a product will be loaded onto the pulley that can brake, the pulley that then generally can not brake promptly can't be suitable for.But cost is improved relatively if on the product that need not to brake, install the pulley that to brake.

Therefore, the purpose of this utility model is to overcome above-mentioned shortcoming, and a kind of pulley that improves structure is provided.

What the utility model proposes slidably is made up of main casing two side wheels and the members such as braking components that can select whether to install with the pulley of on-slip, wherein, main casing is provided with the cap part of a cooperation roller profile, has a middle wallboard along cap, these wallboard central authorities establish axis hole, this axis hole one side is provided with the connection pipe that protrudes upward, opposite side then contains a chase groove that Open Side Down, two side wheels then are provided with for the center shaft that passes above-mentioned axis hole and make up mutually, and be provided with a plurality of distance pieces in its roller inner peripheral surface, form a clearance space between each partition and distance piece, above-mentioned braking components also contains the backstop stub axle pin that snaps in or break away from this clearance space.

Novelty of the present utility model and other characteristics are described in detail as follows conjunction with figs. and preferred embodiment, wherein:

Fig. 1 is the stereo appearance figure of the utility model embodiment;

Fig. 2 is the element exploded view of the utility model embodiment;

Fig. 3 is that the utility model is implemented the combination of elements cut-away view.

See also Fig. 1 and 2, the utility model roughly comprises primary members such as main casing 10, two

side wheels

20,30 and braking components 40.Wherein, main casing 10 is provided with the cap part 11 of a

cooperation roller

20,30 profiles, and along being provided with a middle wallboard 12 in the cap, these wallboard 12 central authorities have a central axis hole 13; 14 of one side connection pipes protrude upward cap 11 parts.Then be provided with a chase groove 15 on the middle wallboard 12 on central axis hole 13 sides, Open Side Down to make it.

Two

side wheels

20,30 roughly are made as identical shaped, and wherein a roller 20 is provided with

center shaft

21, and 30 on another roller contains the trepanning (not shown) in relative position.When two

rollers

20,30 are connected to main casing 10 both sides, center shaft 21 can pass its central axis hole 13, both mutual sleeves are incorporated on the main casing 10, inner peripheral surface at this two

roller

20,30 then is respectively equipped with a plurality of distance pieces 26, then forms the clearance space 27 of an appropriateness between each partition 26 and distance piece 26.

The main body of one braking components 40 is made as L shaped, be provided with compressing tablet 42 in the top of a flanging 41 wherein, other holds 410 of flangings to be made of the two fork sheets that separate 43,44, adorn a suitably big or small axostylus axostyle 45 in 43,44 Jie of two fork sheets, and extend backstop stub axle pin 46,47 respectively in the front end both sides of fork sheet 43,44.

Behind whole pulley combination, the default axostylus axostyle 45 of above-mentioned braking components 40 can be placed in the chase groove 15 of main casing 10, and makes its two front bottom end of pitching sheet 43,44 be pressed against the summary upper limb periphery (as shown in Figure 3) of central axis hole 13.The corner of whole braking components 40 will roughly be positioned at a side root edge of main casing 10, and it is outside that its default compressing tablet 42 then exposes the pulley wheel.

Before the application of force did not press down, two

side wheels

20,30 were not subjected to any obstruction, can be free to slide in braking components 40.But when the arrow A direction presses down, see Fig. 3 at compressing tablet 42 for details, whole braking components 40 will be the axle center with axostylus axostyle 45, make its another flanging 410 along the arrow B direction toward interior leaning on.When compressing tablet 42 downwards the time, then its in addition end then oppositely upwarp.Its fork sheet 43,44 front end stub axle pin 46,47 can be snapped in the clearance space 27 of 26 of each partition 26 and partitions.At this moment, two

side wheels

20,30 are promptly ended by card and no longer can the application of force rotate.Otherwise if compressing tablet 42 is upwards pulled, then these stub axle pin 46,47 break away from clearance space 27, and whole pulley can move freely again.

As can be seen from Figure, whole pulley can work as general pulley and use, and when loading onto braking components 40, then can have the function of prevention pulley rolling if when not installed braking components 40.That is, only to make each primary member of pulley with single group of mould, can make slidably the pulley with two kinds of patterns of on-slip, quite economical and practical.When braking components damages, then can separately it be changed and repair, but need not as on-slip pulley commonly used, when braking components damages, to be about to whole pulley and to scrap.

In sum, the utility model is simple in structure, and is convenient and practical, and low cost of manufacture, is a kind of desirable pulley gear.

Claims

1, a kind of slidably with the pulley of on-slip, it is made up of main casing two side wheels and the braking components that can select whether to install, it is characterized in that: main casing is provided with the cap part of a cooperation roller profile, has a middle wallboard along cap, these wallboard central authorities establish axis hole, this axis hole one side is provided with the connection pipe that protrudes upward, opposite side then contains a chase groove that Open Side Down, two side wheels are provided with the center shaft that passes above-mentioned axis hole and make up mutually, and be provided with a plurality of distance pieces in its roller inner peripheral surface, form a clearance space between each partition and distance piece, contain the backstop stub axle pin that snaps in or break away from this clearance space on the braking components.

2, pulley as claimed in claim 1 is characterized in that: the main body of braking components is L shaped shape, and the top of one flanging is provided with a compressing tablet, and another flanging then contains for the axostylus axostyle that is placed on above-mentioned main casing chase groove, and front end then is provided with the backstop stub axle pin.

3, pulley as claimed in claim 1 is characterized in that: one side of described braking components is made of the two fork sheets that separate, and between this two forks sheet an axostylus axostyle is housed, and its front end then is extended with two stub axle pin to both sides.