CN2851457Y

CN2851457Y - Bottom block

Info

Publication number: CN2851457Y
Application number: CN 200520076925
Authority: CN
Inventors: 张晓华
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-10-28
Filing date: 2005-10-28
Publication date: 2006-12-27
Anticipated expiration: 2015-10-28

Abstract

The utility model discloses a lower pulley which main comprises a pulley rack, a pulley component and a height adjustment structure of the pulley, wherein the pulley component is connected with the lower part of the pulley rack in a rotation connection mode. The utility model is characterized in that the pulley component is composed of a front pulley, a back pulley, and two side connecting rods used for connecting the front and the back pulleys, wherein the two side connecting rods are connected with the front and the back pulleys by respective rotating shafts of the front and the back pulleys in a rotation connection mode; a central shaft which penetrates through the two side connecting rods is arranged between wheel shafts of the front and the back pulleys on the connecting rods; the pulley component is connected with the pulley rack by the central shaft in a rotation connection mode. The utility model adopts the pulley component which is composed of the two linked pulleys, and the load bearing pressure of single pulley is reduced, thereby, the size of each pulley is reduced, the height of a frame of the door window to the ground is reduced, and the effect that the appearance is beautiful and impurities are avoided to enter a guide rail can be achieved, and furthermore, the purposes that the smooth degree of the push movement of the door window is increased and the service life is prolonged can be achieved.

Description

A kind of lower sheave

Technical field

The utility model relates to a kind of pulley, is specifically related to a kind of slide door or window lower sheave, plays slippage and load-bearing effect.

Background technology

In the modern house finishing, many people can select plug-type mode as opening of doors and windows, thereby enlarge living space, the not side of occupation of land.Realize the moving door window function, needing dependence to be installed on the pulley at the door and window top and the end finishes, promptly and pulley mainly can be divided into two kinds of top sheave and lower sheaves, wherein whether top sheave can have hanging wheel and the nonweight-bearing leading block that weight-bearing function is divided into load-bearing according to it, and lower sheave is all being born the function of guiding and load-bearing, adopts hanging wheel even if we can say top sheave, and most weight is still born by lower sheave, thereby cause the loss of lower sheave bigger, general about 5 years of application life.

Existing lower sheave is general main to be made up of pulley bracket, single pulley and pulley governor motion, pulley is rotationally connected by rotating shaft and pulley bracket, described governor motion then by a string be placed in the adjusting support in the support and be opened on the pulley bracket, the pilot hole of oblique layout forms, this pilot hole is positioned at pulley rotating shaft place, adjust spacing between support and the adjusting support by the bolt that is provided with on the rack side wall, rotating shaft is slided in pilot hole, realize to adjust the distance of pulley, remedy not matching of levelness between the Men Tiyu guide rail from guide rail.This lower sheave, structure is comparatively complicated on the one hand; On the other hand, because lower sheave is born the weight of most of door or window, two lower sheaves are installed under the normal condition, promptly the weight of door body is all born by 2 pulleys, thereby having relatively high expectations to the pulley material; Moreover, for guaranteeing not derail in the use, the diameter of pulley can not be too little, the problem of bringing is: pulley is big more, door body (forms) bottom that is mounted is big more from the gap of guide rail, this will influence the overall aesthetics of material installed, after the gap becomes greatly simultaneously, dust, foreign material such as sand grains are easier entering in the guide rail just, during projection in pulley runs into these guide rails, phenomenon stuck or derailing just can appear, bring to the user constant, and when stuck situation occurring, user's hard push-and-pull material installed of generally all can exerting oneself, will cause damage to pulley surface like this, therefore directly have influence on the application life of pulley.

Summary of the invention

The utility model purpose provides a kind of long service life, moves along sliding lower sheave simple in structure, easy for installation, attractive in appearance.

For achieving the above object, the technical solution adopted in the utility model is: a kind of lower sheave, it mainly comprises pulley yoke, pulley assembly and pulley height adjustable structure, described pulley assembly and pulley yoke bottom are rotationally connected, it is characterized in that: described pulley assembly is by preceding, before latter two pulley and the connection, the both sides connecting rod of rear wheel is formed, before described both sides connecting rod passes through, rear wheel pulley rotating shaft separately with before, rear wheel is rotationally connected respectively, before being positioned on the described connecting rod, be provided with an axis that runs through the both sides connecting rod between the rear wheel wheel shaft, described pulley assembly is rotationally connected by axis and pulley yoke.

In the use, because two pulleys are to be rotationally connected by two lateral connector bars and pulley rotating shaft, the initial point that rotates as connecting rod with the rotating shaft that is rotationally connected with pulley yoke, constitute a leverage, in guide rail during slippage, during impurity projection in front wheel runs into guide rail, front wheel upwarps, under the effect of lever, rear wheel presses down; Otherwise, after front wheel rolls across, when running into this projection, rear wheel upwarps equally, front wheel presses down, and forms the motion mode that a company continues and climbs, wherein, that pulley that presses down is born most weight in this moment, therefore be convenient to roll across by that pulley of projection, avoid the pulley derailing, can avoid the damage that when rolling, pulley surface is caused because of load-bearing simultaneously.

In the technique scheme, described pulley height adjustable structure is, on the pulley yoke corresponding to the other end of pulley assembly, be provided with a locating shaft that is rotationally connected with pulley yoke, have the positioning screw hole of side direction on the described locating shaft, and the pulley yoke sidewall of location axle head is the inclined-plane, and the angle of described inclined-plane and pulley yoke bottom surface is between 115 °-100 °.

During installation, the utility model is inserted in the inserted slot of lower frame of door or window, with the side stile of inclined-plane corresponding to door and window, with bolt through the screw of stile correspondence and the locating shaft on the pulley yoke, fixed block support and regulate the pulley height.Utilize the inclined-plane of locating shaft head sheave frame and being rotationally connected of locating shaft and pulley yoke, rely on tightening and the spacing of unscrewing control inclined-plane and door and window stile of bolt, with the axis on the connecting rod is the turning cylinder basic point, change the angle of pulley yoke and horizontal plane, thereby realization opposite house or window bottom frame are from the distance of guide rail.

More optimized technical scheme is, described axis is positioned at the central authorities of connecting rod, is positioned at the centre of two pulleys.The axis initial point is the centre in connecting rod, the arm of force on initial point both sides is equated, thereby forward and backward pulley is born equal power, and pressure obtains balance.

Because the technique scheme utilization, the utility model compared with prior art has following advantage:

1. owing to pulley assembly of the present utility model becomes with former and later two assembly pulleys, and with the connecting rod downlink connection, replace pulley in the past by two pulleys, before each pulley load-bearing equals half, can reduce the size of pulley so greatly, thereby reduce the gap between door and window and the guide rail, make overall appearance more attractive in appearance, reduce the intrusion amount of impurity, mobile door and window is more suitable sliding; By two pulley load-bearing, compression area increases simultaneously, and the pressure that each pulley is subjected to reduces, and slows down pulley because of the wearing and tearing that pressurized strengthens, and increases the service life.

2. connect with connecting rod owing to the front and back pulley, with axis as the initial point that is rotationally connected with pulley yoke, constitute leverage, when the pulley slippage, the front and back pulley is under the leverage of connecting rod, before and after cooperate upper and lower motion, avoid derailing that pulley occurs during impurity or the phenomenon that causes pulley surface to damage in running into guide rail, uses more suitable the cunning and prolongation pulley application life.

3. adopt the ramp structure of pulley yoke and cooperating of locating shaft, utilize the length that is screwed into of regulating bolt, the distance of control inclined-plane and door and window stile, thereby realize adjusting the distance of door and window from guided way, make between each frame of door and window more coupling, simplification is the structure of governor motion in the past, is easy to realize.

4. the utility model is simple in structure, and is more small and exquisite, flexible, installs and uses more convenient.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model embodiment one;

Accompanying drawing 2 is the left view of Fig. 1;

Accompanying drawing 3 is the motion mode schematic diagram of the utility model embodiment one;

Accompanying drawing 4 is the view of the utility model embodiment one in slide rail.

Wherein: [1], pulley yoke; [2], pulley; [3], connecting rod; [4], pulley rotating shaft; [5], axis; [6], locating shaft; [7], positioning screw hole; [8], inclined-plane.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further described:

Embodiment one: shown in accompanying drawing 1 to 4, a kind of lower sheave, it mainly comprises pulley yoke 1, pulley assembly and pulley height adjustable structure, described pulley assembly and pulley yoke 1 bottom are rotationally connected, described pulley assembly is by preceding, before latter two pulley 2 and the connection, the both sides connecting rod 3 of rear wheel 2 is formed, before described both sides connecting rod 3 passes through, rear wheel 2 pulley rotating shaft 4 separately with before, rear wheel 2 is rotationally connected respectively, before being positioned on the described connecting rod 3, be provided with an axis 5 that runs through both sides connecting rod 3 between the rear wheel wheel shaft 4, described axis 5 is positioned at the central authorities of connecting rod 3, be positioned at the centre of two pulleys 2, described pulley assembly is rotationally connected by axis 5 and pulley yoke 1; Described pulley height adjustable structure is, the other end corresponding to pulley assembly, pulley yoke 1 is provided with a locating shaft 6 that is rotationally connected with pulley yoke 1, have positioning screw hole 7 on the described locating shaft 6, and pulley yoke 1 sidewall of locating shaft 6 ends is inclined-plane 8, and the angle of described inclined-plane 8 and pulley yoke 1 bottom surface is between 110 °.

During installation, pulley yoke is inserted in the inserted slot of having held successfully on the door and window boundary frame area, the top of pulley yoke is butted on the upper wall of inserted slot, the beveled end of pulley yoke is corresponding to the stile of door and window, on the stile corresponding to the locating shaft place be provided with locating shaft on the screw of screw coupling, by bolt stile and pulley yoke are fixed, and degree to tight a bolt, adjust the distance of inclined-plane and stile, regulate gap between door and window base and the guide rail, remedy the phenomenon that do not match between the jamb with this.

During use, forward and backward pulley is positioned at U-shaped guide rail (referring to accompanying drawing 3,4), and when promoting door and window, two pulleys roll simultaneously, and during impurity, front wheel upwarps in running into guide rail, and under the effect of lever, rear wheel presses down; Otherwise, after front wheel rolls across, upwarp equally when rear wheel runs into this projection, front wheel presses down, and forms the motion mode that a company continues and climbs, wherein, that pulley that presses down is born most weight in this moment, therefore is convenient to roll across by that pulley of projection, avoids the pulley derailing, can avoid simultaneously the damage that when rolling, pulley surface caused because of load-bearing, increase the service life.

Claims

1. lower sheave, it mainly comprises pulley yoke [1], pulley assembly and pulley height adjustable structure, described pulley assembly and pulley yoke [1] bottom is rotationally connected, it is characterized in that: described pulley assembly is by preceding, before latter two pulley [2] and the connection, the both sides connecting rod [3] of rear wheel [2] is formed, before described both sides connecting rods [3] pass through, rear wheel [2] pulley rotating shaft [4] separately with before, rear wheel [2] is rotationally connected respectively, before being positioned on the described connecting rod [3], be provided with an axis [5] that runs through both sides connecting rod [3] between the rear wheel wheel shaft [4], described pulley assembly is rotationally connected by axis [5] and pulley yoke [1].

2. a kind of lower sheave according to claim 1, it is characterized in that: described pulley height adjustable structure is, pulley yoke [1] is gone up the other end corresponding to pulley assembly, be provided with a locating shaft [6] that is rotationally connected with pulley yoke [1], have the positioning screw hole [7] of side direction on the described locating shaft [6], and pulley yoke [1] sidewall of locating shaft [6] end is inclined-plane [8], and the angle of described inclined-plane [8] and pulley yoke [1] bottom surface is between 115 °-100 °.

3. a kind of lower sheave according to claim 1 is characterized in that: described axis [5] is positioned at the central authorities of connecting rod [3], is positioned at the centre of two pulleys [2].