CN216741134U - Pulley component and sliding door - Google Patents

Abstract

The utility model relates to a pulley assembly and a sliding door/window. Each gasket is provided with a first connecting structure and a second connecting structure, and the second connecting structures on the gaskets adjacent to the shell are matched with the first connecting structures on the shell. The plurality of gaskets are sequentially arranged along the first direction, and for any two adjacent gaskets, the first connecting structure on one gasket is matched with the second connecting structure on the other gasket, so that the superposition of the plurality of gaskets on the first direction can be realized. The stacked gasket can be connected with the first connecting structure on the shell through the second connecting structure on the gasket. When the pulley assembly is used, a plurality of gaskets can be superposed on two sides of the shell along the first direction according to the width of the sliding groove, so that the same type of pulley assembly is matched with sliding grooves of various sizes.

Description

Pulley component and sliding door

Technical Field

The utility model relates to the technical field of door and window accessories, in particular to a pulley assembly and a sliding door and window.

Background

The pulley assembly is an important component of the sliding door and window, and the pulley assembly lifts the sector of the sliding door and window, so that the weight of the sector is borne on the pulley assembly, and the sector can easily move through the sliding fit of the pulley assembly and the sliding groove of the rail profile on the frame profile, and further the sector can be easily opened or closed.

In order to prevent the pulley assembly from swinging in the width direction of the slide groove when sliding in the slide groove, it is necessary that the pulley assembly and the slide groove are matched in the width direction. In actual use, the pulley assemblies of various models need to be produced to be matched with the sliding grooves with different widths due to different width sizes of the frame profiles, namely different width sizes of the sliding grooves.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a pulley assembly and a sliding door/window aiming at the problem that a plurality of pulley assemblies need to be produced to adapt to different sliding chutes.

A sheave assembly, comprising:

the connector comprises a shell, a first connecting structure and a second connecting structure, wherein at least one side surface of the shell along a first direction is provided with the first connecting structure, and the first direction is along the width direction of the shell;

the gasket comprises a plurality of gaskets, wherein the gaskets are positioned in a first direction of the shell, each gasket is provided with a first connecting structure and a second connecting structure, the shell is adjacent to the second connecting structure on the gasket, the first connecting structure on the shell is matched with the second connecting structure on the shell, the gaskets are sequentially arranged along the first direction, any two adjacent gaskets are arranged, and the first connecting structure on one gasket is matched with the second connecting structure on the other gasket.

In one embodiment, the first connecting structure is a bump, the second connecting structure is a through hole, and the bump is matched with the through hole;

or, the first connecting structure is a through hole, the second connecting structure is a lug, and the lug is matched with the through hole.

In one embodiment, the lug comprises a connecting part and a hook part, the connecting part is connected with the gasket, the hook part is arranged at one end of the connecting part far away from the gasket, the hook part protrudes out of the connecting part along the second direction, and the size between two ends of the hook part along the second direction is larger than that between two ends of the hook part along the third direction;

the shape of the through hole is matched with that of the hook part, the size of the through hole along the third direction is larger than that of the through hole along the second direction, and the length of the connecting part along the first direction is equal to the depth of the through hole;

the first direction, the second direction and the third direction are pairwise perpendicular.

In one embodiment, the gasket is further provided with an avoiding hole, the avoiding hole and the through hole are coaxially arranged and are communicated with each other, the aperture of the avoiding hole is larger than or equal to that of the through hole along the third direction, the depth of the avoiding hole is larger than or equal to the thickness of the hook portion along the first direction, and when the connecting portion is matched with the through hole, the hook portion extends into the avoiding hole.

In one embodiment, the gasket is further provided with an avoiding hole, the avoiding hole and the bump are coaxially arranged, the avoiding hole is formed in one side of the gasket along the thickness direction, and the bump is arranged on the other side of the gasket along the thickness direction;

the depth of the through hole along the first direction is equal to the thickness of the gasket, the aperture of the avoiding hole is larger than or equal to the aperture of the through hole along the third direction.

In one embodiment, the housing has sliding grooves formed on two side walls along the first direction, one end of the sliding groove extends to the lower end of the housing, and the pulley assembly further includes:

the inner shell is arranged in the outer shell and is connected with the outer shell through an intermediate shaft, the intermediate shaft penetrates through the inner shell, two end parts of the intermediate shaft extend into sliding grooves, and the intermediate shaft can drive the inner shell to slide out of the sliding grooves;

a locking mechanism for securing the inner shell and the outer shell;

a wheel disposed within the inner shell.

In one embodiment, the intermediate shaft includes a middle section and a sliding section, the sliding section is located at two ends of the middle section, the diameter of the middle section is larger than that of the sliding section, the middle section is arranged in the inner shell in a penetrating mode, and the diameter of the middle section is larger than the width of the sliding groove.

In one embodiment, the sliding chute comprises a first chute section and a second chute section which are connected end to end, one end of the first chute section, which is far away from the second chute section, extends to the lower end of the shell, and the first chute section and the second chute section are obliquely arranged;

the sliding section is provided with a cutting plane;

the width of the notch of the first groove section is matched with the minimum size of the cross section of the sliding section, and the width of the notch of the second groove section is matched with the maximum size of the cross section of the sliding section.

In one embodiment, the outer shell is provided with a strip-shaped groove, the inner shell is provided with a threaded hole, and the locking mechanism comprises a bolt, wherein the bolt sequentially penetrates through the strip-shaped groove and the threaded hole and is used for fixing the inner shell and the outer shell.

A sliding door and window comprises a sash profile, a frame profile and the pulley assembly, wherein a sliding groove is formed in the frame profile, the pulley assembly is arranged in the sliding groove and matched with the sliding groove, and the sash profile is connected to the bottom of the pulley assembly.

Foretell loose pulley assembly and sliding door, loose pulley assembly set up in sliding door's spout, through set up first connection structure and second connection structure on the gasket, and first connection structure and second connection structure cooperation, consequently, two arbitrary gaskets all can be connected through first connection structure and second connection structure, can realize the stack of a plurality of gaskets on the first direction. The first connecting structure is arranged on at least one side surface of the shell along the first direction, namely, the superposed gasket can be connected with the first connecting structure on the shell through the second connecting structure on the gasket, so that the superposed gasket is connected to the shell. When the pulley assembly is used, a plurality of gaskets can be superposed on two sides of the shell along the first direction according to the width of the sliding groove, so that the same type of pulley assembly is matched with sliding grooves of various sizes.

Drawings

FIG. 1 is a schematic view of a pulley assembly connection according to one embodiment;

figure 2 is an exploded view of the sheave assembly of figure 1;

FIG. 3 is a schematic diagram of a connection structure of a gasket according to an embodiment;

FIG. 4 is a schematic diagram of a connection structure of an inner housing in an outer housing according to an embodiment;

fig. 5 is a schematic view of a connection structure of an inner shell in an outer shell in another embodiment.

Reference numerals: 100-a housing; 110-a chute; 111-a first groove section; 112-a first groove section; 120-a strip-shaped groove;

200-an inner shell; 210-an intermediate shaft; 211-middle section; 212-a sliding section; 2121-cutting plane; 230-a threaded hole; 240-bolt; 260-connection hole;

300-a gasket; 310-a bump; 311-a connecting portion; 312-a hook portion; 320-a through hole; 330-avoidance holes;

400-wheels; 410-a connecting shaft; 420-knurling.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 and 2, an embodiment of the present invention provides a pulley assembly including a housing 100 and a plurality of spacers 300, the housing 100 being provided with a first coupling structure on at least one side surface thereof in a first direction OX. The plurality of pads 300 are located in the first direction OX of the housing 100, each pad 300 is provided with a first connection structure and a second connection structure, and the second connection structure on the pad 300 adjacent to the housing 100 is matched with the first connection structure on the housing 100. The plurality of shims 300 are arranged in sequence along the first direction OX, wherein for any two adjacent shims 300, the first connection structure on one shim 300 mates with the second connection structure on the other shim 300.

In this embodiment, the first connecting structure and the second connecting structure are disposed on the spacers 300 and are matched with each other, so that any two spacers 300 can be connected through the first connecting structure and the second connecting structure, and the stacking of the spacers 300 in the first direction OX can be realized. At least one side surface of the housing 100 in the first direction OX is provided with a first coupling structure, i.e., the stacked gasket 300 may be coupled to the first coupling structure of the housing through a second coupling structure of the gasket, thereby coupling the stacked gasket 300 to the housing. When the pulley assembly is used for being mounted to a sliding groove of a frame profile of a sliding door, the sliding assembly is connected with a sector profile of the sliding door, the wheel 400 is mounted in the shell 100, and the wheel 400 is in sliding fit with the sliding groove so as to realize the opening or closing of the sector profile through the sliding of the wheel. A plurality of shims 300 may be stacked on both sides of the housing 100 in the first direction OX, depending on the width of the chute, to enable the same pulley assembly to be fitted with chutes of various sizes. Wherein first connection structure can be the buckle, and second connection structure is the draw-in groove, after first connection structure passed second connection structure, can realize being connected of two adjacent gaskets or gasket and shell promptly. The sliding door and window can be a sliding door or a sliding window.

It should be noted that the first direction OX is along the width direction of the housing, and the width direction of the housing is perpendicular to the sliding direction of the wheels 400 and also perpendicular to the height direction of the housing, i.e., the first direction OX corresponds to the width direction of the sliding groove.

In some embodiments, referring to fig. 2 and 3, the first connecting structure is a via 320, the second connecting structure is a bump 310, and the bump 310 is engaged with the via 320. That is, the housing 100 is provided with a through hole 320, the gasket 300 connected to the housing 100 is provided with a protrusion 310, the gasket 300 can be matched with the through hole 320 on the housing 100 through the protrusion 310 to realize the connection between the gasket 300 and the housing 100, and then the gasket 300 is stacked according to the size requirement of the sliding groove. It should be noted that, in the present embodiment, in order to achieve tight connection between the gasket 300 and the housing 100, the protrusion 310 is in interference fit with the through hole 320.

In other embodiments, the first connecting structure is a bump and the second connecting structure is a through hole, and similarly, the bump is matched with the through hole.

In some embodiments, referring to fig. 3, the protrusion 310 includes a connection portion 311 and a hook portion 312, the connection portion 311 is connected to the gasket 300, the connection portion 311 may be a cylinder or a block-shaped connection structure, and the hook portion 312 is disposed at an end of the connection portion 311 away from the gasket 300. The length of the connecting part 311 along the first direction OX is equal to the depth of the through hole 320, the hook 312 protrudes out of the connecting part 311 along the second direction OY, the size between two ends of the hook 312 along the second direction OY is larger than the size between two ends of the hook 312 along the third direction OY, the shape of the through hole 320 is matched with the shape of the hook 312, and the size of the through hole 320 along the third direction OY is larger than the size of the through hole 320 along the second direction OY, so when two gaskets are connected, the hook 312 can penetrate through the through hole 320 to connect the two gaskets. Wherein, the first direction OX, the second direction OY and the third direction OZ are perpendicular to each other.

When two adjacent gaskets are installed, the second direction OY of the first gasket 300 is rotated to be the same as the third direction OZ of the second gasket 300, then the protrusion 310 of the first gasket 300 extends into the through hole 320 of the second gasket 300, the hook 312 of the first gasket 300 extends out of the through hole 320 of the second gasket 300, and then the first gasket 300 is rotated again, so that the second direction OY of the first gasket 300 is the same as the second direction OY of the second gasket 300, that is, the hook 312 of the first gasket 300 is attached to the side wall of the second gasket 300, thereby realizing the connection of the two adjacent gaskets 300.

Specifically, in order to reduce the production cost, in the present embodiment, the middle portion of the bump 310 in the second direction OY may be eliminated, that is, the bump 310 is divided into two portions in the second direction OY, as shown in fig. 3.

In one embodiment, referring to fig. 3, the pad is further provided with an avoiding hole 330, the avoiding hole 330 and the through hole 320 are coaxially arranged and are communicated with each other, the aperture of the avoiding hole 330 is greater than or equal to the outer diameter of the through hole 320 along the third direction OZ, the depth of the avoiding hole 330 is greater than or equal to the thickness of the hook 312 along the first direction OX, and when the connecting portion 311 is matched with the through hole 320, the hook 312 extends into the avoiding hole 330.

Specifically, the avoiding hole 330 may have any shape, and in the present embodiment, the avoiding hole 330 is a circular shape. That is, when the hook 312 extends into the avoiding hole 330, the hook 312 can rotate freely in the avoiding hole 330, so that the hook 312 can tightly or loosely connect the two gaskets 300. Because the hook 312 is located in the avoiding hole 330, two adjacent spacers 300 can be tightly attached when being stacked, and the two adjacent spacers 300 are not spaced by the hook 312.

In another embodiment, the gasket is further provided with an avoiding hole, the avoiding hole and the bump are coaxially arranged, the avoiding hole is formed in one side of the gasket along the thickness direction, and the bump is arranged on the other side of the gasket along the thickness direction; the depth of the through hole along the first direction OX is equal to the thickness of the gasket, and the aperture of the avoiding hole is larger than or equal to the aperture of the through hole along the third direction OZ.

In this embodiment, three pads connected in sequence are defined as a first pad, a second pad, and a third pad, respectively. When three gaskets are connected in sequence, the connecting part of the first gasket penetrates through the through hole of the second gasket, the hook part of the first gasket is located in the avoiding hole of the third gasket, and therefore the three gaskets can be attached in sequence tightly.

In some embodiments, referring to fig. 1 and 2, the outer casing 100 has sliding grooves 110 formed on two side walls along the first direction OX, one end of each sliding groove 110 extends out of the outer casing 100, the pulley assembly further includes an inner casing 200, a locking mechanism, and a wheel 400, the inner casing 200 is disposed in the outer casing 100, the inner casing 200 and the outer casing 100 are connected by an intermediate shaft 210, the intermediate shaft 210 penetrates through the inner casing 200 and two end portions of the intermediate shaft extend into the sliding grooves 110, and the intermediate shaft 210 can drive the inner casing 200 to slide out of the sliding grooves 110. The locking mechanism is used to fix the inner case 200 and the outer case 100. The wheel 400 is disposed inside the inner case 200.

Specifically, the wheel 400 is connected through the connecting axle 410 with the inner shell 200, the connecting hole 260 has been seted up on the inner shell 200, connecting axle 410 one end surface is provided with knurling 420, knurling 420 is used for cooperating with connecting hole 260, when using, the wheel 400 can rotate on connecting axle 410, because be provided with knurling 420 between connecting axle 410 and the inner shell 200, can prevent that the wheel 400 from rotating, the connecting axle 410 follows the wheel 400 and rotates, when dismantling, only need make connecting axle 410 wear out from the connecting hole 260 of inner shell 200 can.

In actual installation, the wheel 400 is first installed in the inner shell 200, the intermediate shaft 210 penetrates into the inner shell 200, both ends of the intermediate shaft 210 extend out of the inner shell 200, then the end of the intermediate shaft 210 is slid into the sliding groove 110 from one end of the sliding groove 110 extending out of the outer shell 100, and the inner shell 200 and the outer shell 100 are locked by the locking mechanism, so that the inner shell 200 and the outer shell 100 can be installed. The pulley assembly inner casing 200 and the outer casing 100 in this embodiment are fixed by only one locking mechanism, and when the pulley assembly is disassembled, only the locking mechanism needs to be released to lock the inner casing 200 and the outer casing 100, then the inner casing 200 is rotated, and the intermediate shaft 210 drives the inner casing 200 to slide out of the sliding groove 110, so that the disassembly process is simple, and when the wheel 400 is damaged, the wheel 400 can be quickly disassembled for replacement.

In some embodiments, referring to fig. 2, the intermediate shaft 210 includes a middle section 211 and a sliding section 212, the sliding section 212 is located at two ends of the middle section 211, a diameter of the middle section 211 is larger than a diameter of the sliding section 212, the middle section 211 is inserted into the inner housing 200, and the diameter of the middle section 211 is larger than a width of the sliding slot 110, that is, the middle section 211 cannot pass through the sliding slot 110, which not only achieves connection between the inner housing 200 and the outer housing 100, but also facilitates detachment.

In some embodiments, referring to fig. 4 or 5, the sliding chute 110 includes a first chute section 111 and a second chute section 112 connected end to end, an end of the first chute section 111 away from the second chute section 112 extends to the outside of the outer casing 100, the first chute section 111 and the second chute section 112 are disposed in an inclined manner, specifically, taking the pulley assembly in an operating state as an example, the first chute section 111 is disposed along a vertical direction, the second chute section 112 is inclined upward or downward, that is, the relative height between the inner casing 200 and the outer casing 100 can be adjusted, further, the height of the wheel 400 in the inner casing 200 can be adjusted, that is, the pulley assembly of the present application can also be used for adapting a sliding chute with an impossible height.

The sliding section 212 has a cutting plane 2121. The slot width of the first slot segment 111 is adapted to the smallest dimension of the cross section of the sliding segment 212 and the slot width of the second slot segment 112 is adapted to the largest dimension of the cross section of the sliding segment 212, i.e. the slot width of the second slot segment 112 is larger than the slot width of the first slot segment 111.

When installed, the intermediate shaft 210 is rotated such that the cutting planes 2121 on the sliding section 212 are parallel to the side walls of the first groove section 111, and the sliding section 212 can slide from the first groove section 111 into the second groove section 112. When the relative height of the inner housing 200 and the outer housing 100 is specifically adjusted, i.e. when the inner housing 200 and the outer housing 100 are not fixed by the locking mechanism, the inner housing 200 and the outer housing 100 are in the movable connection state, at this time, only when the sliding section 212 rotates to make the cutting plane 2121 parallel to the side wall of the first slot section 111, the sliding section 212 can slide out of the first slot section 111, i.e. the sliding section 212 cannot freely slide out of the first slot section 111 directly during the adjustment process.

In some embodiments, referring to fig. 2, the outer shell 100 is provided with a strip-shaped groove 120, the inner shell 200 is provided with a threaded hole 230, and the locking mechanism includes a bolt 240, and the bolt 240 sequentially passes through the strip-shaped groove 120 and the threaded hole 230 to fix the inner shell 200 and the outer shell 100.

In this embodiment, due to the arrangement of the strip-shaped groove 120 and the second groove section 112 on the outer shell 100, the heights of the inner shell 200 and the wheel 400 in the outer shell 100 can be adjusted according to actual needs, and then the adjusted inner shell 200 and the outer shell 100 are fixed by the bolt 240. specifically, referring to fig. 4, when the sliding section 212 is located at the lowest position of the first groove section 111, the bolt 240 penetrates through the lowest part of the strip-shaped groove 120 to fix the inner shell 200 and the outer shell 100; referring to fig. 5, when the sliding section 212 is located at the highest position of the first groove section 111, the bolt 240 passes through the top of the strip-shaped groove 120 to fix the inner case 200 and the outer case 100.

The embodiment of the utility model also provides a pulley component, which comprises a sash section bar, a frame section bar and a pulley component, wherein the frame section bar is provided with a sliding groove, and the pulley component is arranged in the sliding groove and is matched with the sliding groove. The sector section bar is connected to the bottom of the pulley assembly, and the sector groove can be a door leaf or a window sash. When the pulley assembly slides in the sliding groove, the fan-shaped section can be driven to move, and then the sliding door and the sliding window can be closed and opened.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.

Claims (10)

1. A sheave assembly, comprising:

the connector comprises a shell, a first connecting structure and a second connecting structure, wherein at least one side surface of the shell along a first direction is provided with the first connecting structure, and the first direction is along the width direction of the shell;

the gasket comprises a plurality of gaskets, wherein the gaskets are positioned in a first direction of the shell, each gasket is provided with a first connecting structure and a second connecting structure, the shell is adjacent to the second connecting structure on the gasket, the first connecting structure on the shell is matched with the second connecting structure on the shell, the gaskets are sequentially arranged along the first direction, any two adjacent gaskets are arranged, and the first connecting structure on one gasket is matched with the second connecting structure on the other gasket.

2. The sheave assembly of claim 1,

the first connecting structure is a lug, the second connecting structure is a through hole, and the lug is matched with the through hole;

or, the first connecting structure is a through hole, the second connecting structure is a lug, and the lug is matched with the through hole.

3. The pulley assembly according to claim 2, wherein the protrusion includes a connecting portion connected to the washer and a hook portion disposed at an end of the connecting portion remote from the washer, the hook portion protruding from the connecting portion in the second direction, a dimension between ends of the hook portion in the second direction being greater than a dimension between ends of the hook portion in the third direction;

the shape of the through hole is matched with that of the hook part, the size of the through hole along the third direction is larger than that of the through hole along the second direction, and the length of the connecting part along the first direction is equal to the depth of the through hole;

the first direction, the second direction and the third direction are vertical to each other.

4. The pulley assembly according to claim 3, wherein the pad further includes an avoiding hole, the avoiding hole is coaxial with the through hole and is communicated with the through hole, a diameter of the avoiding hole is greater than or equal to a diameter of the through hole along the third direction, a depth of the avoiding hole is greater than or equal to a thickness of the hook portion along the first direction, and when the connecting portion is engaged with the through hole, the hook portion extends into the avoiding hole.

5. The pulley assembly according to claim 3, wherein the washer is further provided with an avoiding hole, the avoiding hole is coaxially arranged with the projection, the avoiding hole is arranged on one side of the washer in the thickness direction, and the projection is arranged on the other side of the washer in the thickness direction;

the depth of the through hole along the first direction is equal to the thickness of the gasket, the aperture of the avoiding hole is larger than or equal to the aperture of the through hole along the third direction.

6. The pulley assembly according to claim 1, wherein the housing has sliding grooves formed on two sidewalls thereof along the first direction, one end of the sliding groove extending to a lower end of the housing, the pulley assembly further comprising:

the inner shell is arranged in the outer shell and is connected with the outer shell through an intermediate shaft, the intermediate shaft penetrates through the inner shell, two end parts of the intermediate shaft extend into sliding grooves, and the intermediate shaft can drive the inner shell to slide out of the sliding grooves;

a locking mechanism for securing the inner shell and the outer shell;

a wheel disposed within the inner shell.

7. The pulley assembly according to claim 6, wherein the intermediate shaft includes a middle section and sliding sections, the sliding sections being located at opposite ends of the middle section, the middle section having a diameter greater than a diameter of the sliding sections, the middle section being disposed through the inner housing, the middle section having a diameter greater than a width of the sliding slot.

8. The sheave assembly of claim 7, wherein the runner includes first and second end-to-end connected trough segments, an end of the first trough segment distal from the second trough segment extending to the housing lower end, the first and second trough segments being angularly disposed;

the sliding section is provided with a cutting plane;

the width of the notch of the first groove section is matched with the minimum size of the cross section of the sliding section, and the width of the notch of the second groove section is matched with the maximum size of the cross section of the sliding section.

9. The pulley assembly according to claim 6, wherein the outer casing has a slot, the inner casing has a threaded hole, and the locking mechanism includes a bolt, the bolt passing through the slot and the threaded hole in sequence for fixing the inner casing to the outer casing.

10. A sliding door, comprising a sash profile, a frame profile and the pulley assembly of any one of claims 1 to 9, wherein the frame profile is provided with a sliding groove, the pulley assembly is disposed in the sliding groove and is matched with the sliding groove, and the sash profile is connected to the bottom of the pulley assembly.

Images