CN201714212U

CN201714212U - Separation prevention pulley block

Info

Publication number: CN201714212U
Application number: CN2010202245759U
Authority: CN
Inventors: 余家耀
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-06-09
Filing date: 2010-06-09
Publication date: 2011-01-19
Anticipated expiration: 2020-06-09

Abstract

The utility model discloses a separation prevention pulley block, which belongs to the field of window sash pulley blocks. The utility model has the technical scheme that the pulley block comprises a fixed shaft head and a fixed shaft clip seat, wherein the working part of the fixed shaft head is a circular arc-shaped or circular ring-shaped bulge; the fixed shaft clip seat is provided with a circular arc-shaped or circular ring-shaped groove matched with the bulge; the inner side end surface of the fixed shaft head is parallel with the inner side end surface of the fixed shaft clip seat; and the cross section of the working surface of the fixed shaft head and the cross section of the working surface of the fixed shaft clip seat are butted together to form a round shape. The technical scheme provided by the embodiment of the utility model has the advantages that due to the fact that the cross section of the working surface of the fixed shaft head and the cross section of the working surface of the fixed shaft clip seat are butted together to form the integrated round shape, when a window sash rotates, the working surface of the fixed shaft head smoothly glides into the groove of the fixed shaft clip seat under the action of a circular arc centripetal force, and thereby, the separation phenomenon is effectively prevented from happening; due to the fact that the inner side end surface of the fixed shaft head and the inner side end surface of the fixed shaft clip seat are parallel, the window sash is pushed and pulled smoothly. The separation prevention pulley block has simple integral structure and wide sphere of application.

Description

A kind of anticreep card assembly pulley

Technical field

The utility model relates to sash assembly pulley field, particularly a kind of anticreep card assembly pulley.

Background technology

At present, the assembly pulley that uses on the existing window type comprises dead axle deck and dead axle head, the dead axle deck is fixed on the window frame interior end of track at two ends up and down, the end, two ends up and down of sash one side is provided with head pulley, the end, two ends up and down of sash opposite side is provided with auxilliary pulley, the outside of the sliding group of main wheel is set with the dead axle head that is used with the dead axle deck, sash is by the pulley and the track at two ends can horizontally slip up and down, when sliding into the end of dead axle deck one side, the auxilliary pulley of sash is de-orbited, axis with head pulley is the outer sideway swivel of axial window frame, and the dead axle head snaps in the dead axle deck simultaneously, is used to prevent that sash from taking off card.

The inner side end of the dead axle head of existing assembly pulley and the inner side end of dead axle deck are parallel to each other, the dead axle deck is square pedestal, inner side end is provided with circular groove, the dead axle head is similar rectangle, the arcwall face that one end of close auxilliary pulley is used for the circular groove with the dead axle deck, the assembly pulley of this kind structure, during rotation, because the work plane of dead axle deck and dead axle head is the circular arc less than semicircle, the dead axle deck can not well block the dead axle head, and after the support that de-orbits of auxilliary pulley, glass is under the self gravitation effect, can tilt to auxilliary pulley direction, thereby easily the dead axle head is pulled out in the dead axle deck and cause taking off the card phenomenon, make sash Yin Tuoka and to outwards falling, and sash is wide more, it is few more that the dead axle head blocks the dead axle deck, the easy more card phenomenon of taking off; For anti-anti-avulsion card, need to increase the support of access bridge, when dead axle head and dead axle deck have enough contact surfaces and can not take off card, auxilliary pulley just breaks away from from access bridge, cause casement to be poured out laterally to prevent dead axle head and the taking off card of dead axle deck, take off the card problem though the increase of access bridge has well solved, make that structure becomes complicated and because access bridge can be given prominence to more than 10 centimeters usually blocks using of curtain and influences attractive in appearance through regular meeting; The generation of influence of curtain being used for fear of access bridge etc. and anti-anti-avulsion card phenomenon, existing assembly pulley has adopted another kind of technical scheme: the inclined-plane that the inner side end of dead axle head is designed to an inclination, intersect with the inner side end of dead axle deck, when the assembly pulley of this structure arrives dead axle deck position in the push-and-pull of dead axle head, before sash rotates laterally, one end inboard of the closely auxilliary pulley of dead axle head rest has snapped in the circular groove of dead axle deck, thereby when making sash begin to rotate laterally, the contact surface of dead axle head and dead axle deck can have been prevented the generation of anti-avulsion card phenomenon, the angle of rotation is big more, contact surface is many more, the generation of effectively anti-anti-avulsion card phenomenon, but the assembly pulley of this structure, end near auxilliary pulley of dead axle head snaps in the process of the circular groove of dead axle deck, be a process of pushing by force and snapping in, make the push-and-pull of the sash cunning that has some setbacks, use inconvenient; In addition, above-mentioned two kinds of structures can only be used for the forms that the glass width is no more than 50 centimeters, and when the glass width surpassed 50 centimeters, above-mentioned two kinds of structures also were easy to take off the card phenomenon, cause sash down to fall.

In realizing process of the present utility model, the inventor finds that there is following problem at least in prior art: existing assembly pulley is for anti-anti-avulsion card phenomenon takes place, and needing increases access bridge, make that structure becomes complicated and influence the use of curtain and window attractive in appearance; Or, the inner side end of dead axle head and the inner side end of dead axle deck being designed to chi structure for anti-anti-avulsion card phenomenon takes place, this kind structure makes the sash push-and-pull cunning that has some setbacks, and uses inconvenience; In addition, existing assembly pulley can only be suitable on the forms that the glass width is no more than 50 centimeters, narrow application range.

The utility model content

For the generation of effectively anti-anti-avulsion card phenomenon, sash push-and-pull along sliding and pulley block structure is simple, the scope of application is wide, the utility model embodiment provides a kind of anticreep card assembly pulley.Described technical scheme is as follows:

A kind of anticreep card assembly pulley, comprise dead axle head and dead axle deck, wherein, the working portion of described dead axle head is circular arc or annular projection, described dead axle deck is provided with circular arc or the toroidal cavity that is used with described projection, the inner side end of described dead axle head is parallel with the inner side end of described dead axle deck, and the cross section of the work plane of the cross section of the work plane of described dead axle head and described dead axle deck is docking together and is circle.

In order better to realize the foregoing invention purpose, the utility model embodiment can also comprise following technical scheme: the cross section of the work plane of the cross section of the work plane of described dead axle head and described dead axle deck, and one of them is greater than semicircle, and another is less than semicircle.

In order better to realize the foregoing invention purpose, the utility model embodiment can also comprise following technical scheme: the upper end of described dead axle head is provided with the cross section of arc-shaped convex and described arc-shaped convex less than semicircle, and the inner side end of described dead axle deck is provided with the cross section of the circular groove that is used with described arc-shaped convex and described circular groove greater than semicircle.

In order better to realize the foregoing invention purpose, the utility model embodiment can also comprise following technical scheme: the upper end of described dead axle head is provided with the cross section of annular projection and described annular projection greater than semicircle, and the inner side end of described dead axle deck is provided with the cross section of the toroidal cavity that is used with described annular projection and described toroidal cavity less than semicircle.

The beneficial effect of the technical scheme that the utility model embodiment provides is: the outside end face of dead axle head is a work plane, and dock in the cross section of the cross section of dead axle head work plane and dead axle deck work plane is a complete circle, during the sash rotation, the work plane of dead axle head slips in the groove of dead axle deck under the effect of circular arc centripetal force smoothly, effectively prevent and take off the card phenomenon, because the inner side end of dead axle head is parallel with the inner side end of dead axle deck, the sash push-and-pull is along sliding simultaneously; And do not need to increase access bridge, overall structure is simple, does not influence the attractive in appearance of the use of curtain and window; The scope of application is wide, even the glass width surpasses 50 centimeters, still can normally use and not take off the card phenomenon.

Description of drawings

In order to be illustrated more clearly in the technical scheme of the utility model embodiment, to do one to the accompanying drawing that uses among the embodiment below introduces simply, apparently, below listed accompanying drawing only be embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the front view that the utility model embodiment (1) provides;

Fig. 2 is the dead axle head three-dimensional structure diagram of the utility model embodiment (1);

Fig. 3 is the dead axle deck three-dimensional structure diagram of the utility model embodiment (1);

Fig. 4 is the front view that the utility model embodiment (2) provides;

Fig. 5 is the dead axle head three-dimensional structure diagram of the utility model embodiment (2);

Fig. 6 is the dead axle deck three-dimensional structure diagram of the utility model embodiment (2).

In the accompanying drawing, the component list of each label representative is as follows:

1, dead axle head; 2, head pulley; 3, dead axle deck; 11, arc-shaped convex; 12, annular projection; 31, circular groove; 32, toroidal cavity.

The specific embodiment

For making the purpose of this utility model, technical scheme and advantage clearer, the utility model embodiment is described in further detail below in conjunction with accompanying drawing.

Embodiment one:

As Fig. 1, Fig. 2 and shown in Figure 3, the technical scheme of the utility model embodiment (1) is: a kind of anticreep card assembly pulley, comprise dead axle head 1 and dead axle deck 3, wherein, the working portion of dead axle head 1 is an arc-shaped convex 11, arc-shaped convex 11 is arranged on the upper end of dead axle head 1, the inner side end of dead axle deck 3 is provided with the circular groove 31 that is used with arc-shaped convex 11, the inner side end of dead axle head 1 is parallel with the inner side end of dead axle deck 3, the cross section of the cross section of arc-shaped convex 11 and circular groove 31 is docking together and is circle, and the cross section of arc-shaped convex 11 is less than semicircle, and the cross section of circular groove 31 is greater than semicircle.

The inner side end of dead axle head 1 is parallel with the inner side end of dead axle deck 3, and the sash push-and-pull is along sliding.

The cross section of arc-shaped convex 11 is less than semicircle, the cross section of circular groove 31 is greater than semicircle, when the support of auxilliary pulley disorbit just, though it is less that arc-shaped convex 11 snaps in the part of circular groove 31, but because the cross section of circular groove 31 is greater than the effect of semicircle and circular arc centripetal force, 11 meetings of arc-shaped convex are to the inner slide of circular groove 31, and can not slide laterally, and along with arc-shaped convex 11 slide to the inside many more, the contact area of arc-shaped convex 11 and circular groove 31 is big more, thus the generation of effectively anti-anti-avulsion card phenomenon.

Embodiment two:

As Fig. 4, Fig. 5 and shown in Figure 6, the technical scheme of the utility model embodiment (2) is: a kind of anticreep card assembly pulley, comprise dead axle head 1 and dead axle deck 3, wherein, the working portion of dead axle head 1 is an annular projection 12, annular projection 12 is arranged on the upper end of dead axle head 1, the inner side end of dead axle deck 3 is provided with the toroidal cavity 32 that is used with annular projection 12, the inner side end of dead axle head 1 is parallel with the inner side end of dead axle deck 3, the cross section of the cross section of annular projection 12 and toroidal cavity 32 is docking together and is circle, and the cross section of annular projection 12 is greater than semicircle, and the cross section of toroidal cavity 32 is less than semicircle.

The cross section of annular projection 12 is greater than semicircle, the cross section of toroidal cavity 32 is less than semicircle, when the support of auxilliary pulley disorbit just, though it is less that annular projection 12 snaps in the part of toroidal cavity 32, but because the cross section of annular projection 12 is greater than the effect of semicircle and circular arc centripetal force, 12 meetings of annular projection are to the inner slide of toroidal cavity 32, and can not slide laterally, and along with annular projection 12 slide to the inside many more, the contact area of annular projection 12 and toroidal cavity 32 is big more, thus the generation of effectively anti-anti-avulsion card phenomenon.

The above only is preferred embodiment of the present utility model, and is in order to restriction the utility model, not all within spirit of the present utility model and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. anticreep card assembly pulley, comprise dead axle head and dead axle deck, it is characterized in that, the working portion of described dead axle head is circular arc or annular projection, the inner side end of described dead axle deck is provided with circular arc or the toroidal cavity that is used with described projection, the inner side end of described dead axle head is parallel with the inner side end of described dead axle deck, and the cross section of the work plane of the cross section of the work plane of described dead axle head and described dead axle deck is docking together and is circle.

2. anticreep card assembly pulley according to claim 1 is characterized in that, the cross section of the work plane of the cross section of the work plane of described dead axle head and described dead axle deck, and one of them is greater than semicircle, and another is less than semicircle.

3. anticreep card assembly pulley according to claim 1 and 2, it is characterized in that, the upper end of described dead axle head is provided with the cross section of arc-shaped convex and described arc-shaped convex less than semicircle, and the inner side end of described dead axle deck is provided with the cross section of the circular groove that is used with described arc-shaped convex and described circular groove greater than semicircle.

4. anticreep card assembly pulley according to claim 1 and 2, it is characterized in that, the upper end of described dead axle head is provided with the cross section of annular projection and described annular projection greater than semicircle, and the inner side end of described dead axle deck is provided with the cross section of the toroidal cavity that is used with described annular projection and described toroidal cavity less than semicircle.