WO2022057056A1

WO2022057056A1 - Pulley assembly and device, and sliding door assembly and device

Info

Publication number: WO2022057056A1
Application number: PCT/CN2020/127147
Authority: WO
Inventors: 林孝发; 林孝山; 郑鹏兴; 邓小清; 刘启乔; 邓飞明; 余晓龙
Original assignee: 福建西河卫浴科技有限公司
Priority date: 2020-09-21
Filing date: 2020-11-06
Publication date: 2022-03-24
Also published as: CN112096202A

Abstract

A pulley assembly and device, and a sliding door assembly and device. The pulley assembly comprises: a base; one or more pulleys mounted on the base; and an anti-bounce assembly mounted on the base, the anti-bounce assembly and the one or more pulleys being jointly mounted in a guide rail matching the one or more pulleys, and the anti-bounce assembly limiting a bounce space of the one or more pulleys in the guide rail. The pulley device comprises: said pulley assembly, and a mounting base assembled with said pulley assembly, the mounting base being fixed to a sliding door. The sliding door assembly comprises: a sliding door and said pulley device mounted on the sliding door. The sliding door device comprises: a door frame, and said sliding door assembly mounted to the door frame in a fitting manner, the door frame being provided with a guide rail, and the pulleys and the anti-bounce assembly that are provided on the pulley assemblies of the sliding door assembly are mounted to the guide rail in a fitting manner.

Description

Pulley assemblies, devices and moving door assemblies, devices

technical field

The embodiments of the present application relate to, but are not limited to, the field of door systems, and particularly relate to pulley assemblies and devices and moving door assemblies and devices.

Background technique

Some shower room moving doors use bearing hanging pulley devices, including double pulley and three pulley structures. The double pulley structure is easy to install, but due to the influence of the weight of the moving door, it is easy to fall off the track during use. The three-pulley structure solves the problem that the pulley device is easy to fall off, but because the three pulleys are relatively fixed, the installation of the moving door of the shower room and the replacement of the pulleys are complicated and inconvenient for maintenance.

SUMMARY OF THE INVENTION

The following is an overview of the topics detailed in this article. This summary is not intended to limit the scope of protection of the claims.

The present application aims to solve the problems existing in some technologies, so as to provide a pulley assembly and device and a moving door assembly and device that can avoid falling off.

The pulley assembly provided by the embodiment of the present application includes: a base; one or more pulleys, mounted on the base; further comprising, an anti-jump assembly, installed on the base, and the anti-jump assembly can be combined with one or more pulleys They are installed together in a guide rail matched with one or more pulleys and limit the jumping space of one or more pulleys in the guide rail.

An embodiment of the present application provides a pulley device, which includes the above pulley assembly and a mounting seat assembled with the pulley assembly, and the mounting seat can be fixed on a moving door.

An embodiment of the present invention further provides a moving door assembly, comprising: a moving door and the above-mentioned pulley device mounted on the moving door.

The embodiment of the present application also provides a moving door device, comprising: a door frame and the above-mentioned moving door assembly installed in cooperation with the door frame, the door frame is provided with a guide rail, and the pulley and the anti-jump assembly on the pulley assembly of the moving door assembly are installed in cooperation with the guide rail.

In the embodiment of the present application, the anti-bounce assembly is provided on the pulley assembly and can be installed together with the pulley in the guide rail to limit the jumping space of the pulley in the guide rail and prevent the pulley from falling off; the anti-bounce assembly and the pulley are both installed on the base. , and the design of being installed together in the guide rail matched with the pulley makes the overall structure simple, which is convenient for users to install and replace by themselves, which can save labor costs and improve user experience.

Other features and advantages of the present application will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the present application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the description, claims and drawings.

Other aspects will become apparent upon reading and understanding of the drawings and detailed description.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are used to provide a further understanding of the technical solutions of the embodiments of the present application, and constitute a part of the specification. They are used to explain the technical solutions of the present application together with the embodiments of the present application, and do not limit the technical solutions of the present application.

1 is a perspective view of a pulley assembly in an embodiment of the application;

Fig. 2 is the three-dimensional disassembled view of Fig. 1;

3 is a perspective view of a reinforcement portion of the base of the pulley assembly in the embodiment of the application;

4 is a perspective view of a wing portion of an anti-bounce assembly of a pulley assembly in an embodiment of the application;

5 is a perspective view of a positioning seat in an embodiment of the application;

Fig. 6 is the perspective view of the pulley assembly and the mounting seat in the embodiment of the present application;

Fig. 7 is the three-dimensional disassembled view of Fig. 6;

8 is a perspective view of a mounting seat in an embodiment of the application;

9 is a schematic view of the disassembly of the first elastic element and the mounting seat in the embodiment of the present application;

10 is a schematic perspective view of the mounting seat installed on the moving door in the embodiment of the application;

Fig. 11 is the three-dimensional disassembled view of Fig. 10;

Fig. 12 is the three-dimensional schematic diagram that the pulley assembly and the mounting seat on the moving door are cooperatively installed in the embodiment of the application;

13 is a schematic diagram of the first installation state of the pulley assembly at the first cross-section when the pulley assembly and the mounting seat are installed together in the embodiment of the application;

14 is a schematic diagram of the second installation state of the pulley assembly in the first section when the pulley assembly and the mounting seat are installed together in the embodiment of the application;

15 is a schematic diagram of the third installation state of the first cross-section when the pulley assembly and the mounting seat are installed in cooperation with the embodiment of the application;

16 is a schematic diagram of the fourth installation state of the first cross-section when the pulley assembly and the mounting seat are installed together in the embodiment of the application;

FIG. 17 is a schematic diagram of the fifth installation state of the first cross-section when the pulley assembly and the mounting seat are installed in cooperation with the embodiment of the application;

18 is a schematic diagram of the first installation state of the second cross-section when the pulley assembly and the mounting seat are installed in cooperation with the embodiment of the application;

19 is a schematic diagram of the second installation state of the second cross-section when the pulley assembly and the mounting seat are installed in cooperation with the embodiment of the application;

20 is a cross-sectional view 1 of a state 1 of the pulley assembly according to the embodiment of the application being installed in the guide rail;

FIG. 21 is a second cross-sectional view of the second state in which the pulley assembly according to the embodiment of the application is installed in the guide rail.

Description of reference numbers:

Pulley assembly-1; base-10; pulley-11; anti-bounce assembly-12; pulley seat-101; pulley frame-102; pulley mounting part-1021; ; Protruding part-1025; First shaft hole-1026; First installation slot-1010; Second installation slot-1011; Beam-1012; Buckle part-1013; 120; elastic block-121; reset element-122; base-1210; wing-1211; arc-shaped part-1212; convex rib-1213; second shaft hole-1214; Mounting slot-1501; Positioning seat-150; Slider assembly-151; First elastic element-1510; Slider-1511; Pulley device-2; Mounting seat-20; Card slot-201; Fitting part-202; Two elastic elements-203; positioning groove-2010; moving door-3; screw-31; metal sleeve-32; countersunk head sleeve-33; decorative cover-34; screw sleeve-35; door frame-4; guide rail-41.

detail

Hereinafter, the embodiments of the present application will be described with reference to the accompanying drawings. The embodiments in the present application and the features in the embodiments may be arbitrarily combined with each other if there is no conflict.

As shown in FIGS. 1-2 , the pulley assembly 1 in the embodiment of the present application includes a base 10 , one or more pulleys 11 installed on the base 10 , and an anti-jump assembly 12 installed on the base 10 . The jumping assembly 12 is arranged to be installed together with the one or more pulleys 11 in a guide rail (also called a track) 41 that cooperates with the one or more pulleys 11 and restricts the one or more pulleys 11 in the guide rail 41. Jump space (refer to Figures 20 and 21). This embodiment is described by taking the installation of two pulleys 11 on the base 10 as an example, that is, the plurality of pulleys 11 may include a first pulley and a second pulley arranged along the moving direction of the sliding assembly 1 .

The base 10 may include one or more pulley mounting parts 1021 arranged along the moving direction of one or more pulleys 11, and a base 1022, and the one or more pulleys 11 may be installed in cooperation with the one or more pulley mounting parts 1021 , the anti-bounce assembly 12 can be installed in cooperation with the base 1022 .

As shown in FIGS. 1-3 , the base 10 may include a pulley seat 101 and a pulley frame 102 which are installed in cooperation with each other. One end of the pulley frame 102 may include one or more pulley mounting portions 1021 arranged along the moving direction of the sliding assembly 1 , and a base 1022 disposed between a pair of pulley mounting portions 1021 . The other end of the pulley frame 102 may include a connecting portion 1020, and the number of pulley mounting portions 1021 may be the same as the number of pulleys 11. In this embodiment, a pair of pulley mounting portions 1021 are provided, and the pair of pulley mounting portions 1021 may include a first pulley an installation part and a second pulley installation part. The first pulley and the second pulley may be respectively mounted on the first pulley mounting portion and the second pulley mounting portion through a fixing member. The base 1022 may include a base portion 1023 disposed on the pulley frame 102, and a reinforcing portion 1024 installed in cooperation with the base portion 1023. The top and two sides of the reinforcing portion 1024 may be provided with protruding portions 1025, and the protruding portions 1025 may be provided with protruding portions 1025. The first shaft hole 1026 . The reinforcement portion 1024 may be attached to the base portion 1023 through a fixing member. The fixing member in this embodiment can be a screw, and the type of the screw can be selected according to different connection parts. This embodiment does not limit the selection of the fixing member and the type of the fixing member.

As shown in FIGS. 1-2 , one end of the pulley seat 101 may include a first installation groove 1010 , and the other end may be provided with a second installation groove 1011 . The second installation groove 1011 may pass through to the upper end of the pulley seat 101 . The upper part of the pulley seat 101 may be provided with a cross beam 1012 mounted on a pair of side walls of the second mounting groove 1011 . The beam 1012 can be configured to be flexible and have a certain elasticity. The lower part of the pulley seat 101 may be provided with a buckle part 1013 located at the lower part of the second installation groove 1011 .

As shown in FIG. 2 , the pulley assembly 1 may further include a first connecting assembly for fixedly connecting the connecting portion 1020 of the pulley frame 102 to the pulley base 101 , and the first connecting assembly may include a bolt 13 and a snap ring capable of holding the bolt 13 . Sheet 14. Both the connecting portion 1020 of the pulley frame 102 and the bottom of the pulley seat 101 may be provided with bolt holes (not numbered) that cooperate with the bolts 13 . This embodiment does not limit the form of the first connection component.

When the pulley base 101 and the pulley frame 102 are installed with each other, the connecting portion 1020 of the pulley frame 102 can be embedded in the first installation groove 1010 of the pulley base 101 . The bolts 13 of the first connecting component can extend from the bolt holes at the bottom of the pulley base 101 into the first installation groove 1010 and be inserted into the bolt holes of the connecting portion 1020 of the pulley frame 102, so as to connect the connecting portion 1020 of the pulley frame 102 to the connecting portion 1020 of the pulley frame 102. The pulley seat 101 is fixedly connected, and the clip spring 14 can hold the bolt 13 and locate the bolt 13 .

As shown in FIG. 2 and FIG. 4 , the anti-bounce assembly 12 may include an installation shaft 120 fixed on the base 10 , a spring block 121 installed on the installation shaft 120 and capable of rotating on the installation shaft 120 , and a spring block 121 provided on the installation shaft 120 . The reset element 122 of the elastic block 121 is clamped on the 120, and the anti-bounce assembly 12 and the base 10 can be installed in the form of a pivot. The elastic block 121 may include a base 1210 and a pair of wings 1211 extending from the base 1210 to both sides. The wings 1211 may be located above the first pulley and the second pulley, respectively. The arc-shaped portion 1212. Two sides of the base 1210 may be provided with protruding ribs 1213 , and the protruding ribs 1213 may be provided with second axial holes 1214 corresponding to the first axial holes 1026 of the protruding portion 1025 of the base 1022 . A stop 1215 may be provided at an intermediate position of the base 1210 for positioning the reset element 122 . In this embodiment, the reset element 122 is not limited, and can be set as a coil spring 122 .

As shown in FIGS. 2-4 , when the anti-bounce assembly 12 is installed with the base 1022 , the mounting shaft 120 can be inserted into the second shaft hole 1214 of the protruding rib 1213 and the first shaft hole 1026 of the protruding portion 1025 , so as to The base 1022 is connected with the elastic block 121 , and the elastic block 121 can rotate on the installation shaft 120 . The coil spring 122 can be arranged on the installation shaft 120 and abut against the stop portion 1215 of the elastic block 12 to hold the elastic block 12. When the elastic block 121 is stressed, the coil spring 122 is deformed, and the elastic block 121 can overcome the coil The stop force of the spring 122 rotates, and when the force on the elastic block 121 disappears, the coil spring 122 can drive the elastic block 121 to reset.

When the pulley assembly 1 is installed with the guide rail 41 (see FIGS. 20 and 21 ), due to the high height of the anti-bounce assembly 12 , the elastic block 121 rotates after being blocked by the upper end of the door frame, and the height decreases. At this time, the coil spring 122 After deformation, the first pulley, the second pulley, and the elastic block 121 themselves can be smoothly installed in the guide rail 41. After the pulley assembly 1 enters the guide rail 41, the blocking force from the upper end of the door frame 4 disappears, and the anti-bounce assembly 12 is in the coil spring 122. Under the force of , it can automatically return to the initial position, and the height rises, which fills the gap between the pulley 11 and the guide rail 41, and can prevent the jump caused by the excessive gap between the first pulley and the second pulley and the guide rail 41.

As shown in FIGS. 1-2 and 5 , the pulley assembly 1 may further include a positioning device 15 disposed on the upper end of the pulley base 101 . The positioning device 15 may include a positioning base 150 and a slider assembly 151 disposed on the positioning base 150 . The positioning base 150 can be mounted on the upper end of the pulley base 101 by using a fixing member. The slider assembly 151 may include a first elastic element 1510 and a slider 1511 connected with the first elastic element 1510 . The positioning seat 150 may be provided with a mounting groove 1501 (as shown in FIG. 5 ), and the first elastic element 1510 may be arranged in the mounting groove 1501 . Retracted into the installation groove 1501 , the slider 1511 can extend out of the rear end of the positioning device 15 and abut against the fitting position of the installation seat 20 and the upper end of the pulley seat 101 . In this embodiment, the first elastic element 1510 may be a spring.

As shown in FIGS. 6-9 , the embodiment of the present application further provides a pulley device 2 , which includes a pulley assembly 1 and a mounting seat 20 assembled with the pulley assembly 1 , and the mounting seat 20 can be fixedly connected to the moving door 3 . The mounting base 20 may include a clamping slot 201 located at the upper part and a fitting part 202 located at the lower part (as shown in FIG. 7 ), and the beam 1012 may be clamped in the clamping slot 201 .

As shown in FIGS. 8-9 , the mounting base 20 may further include one or more second elastic elements 203 disposed in the card slot 201 . In this embodiment, the second elastic element 203 can be set as a pair of spaced elastic columns, the elastic columns can be set with soft rubber material, and the clamping slot 201 can be provided with a positioning slot 2010 for accommodating the second elastic element 203 .

As shown in Figures 13-19, when the pulley assembly 1 is installed with the mounting seat 20, the mounting seat 20 can be installed in the second mounting groove 1011 of the base 10, and the beam 1012 of the second mounting groove 1011 is first clamped to the clip slot 201, at this time the slider 1511 is pressed by the mounting seat 20, retracted into the mounting slot 1501 of the positioning seat 150, and then the beam 1012 of the second mounting slot 1011 is clamped into the slot 201, so that the second elastic element One end of the 203 abuts against the bottom of the slot 201 and the other end against the beam 1012 , and then presses the base 10 downward to embed the fitting portion 202 in the snap portion 1013 and engage with the snap portion 1013 . When the installation of the snap portion 1013 and the fitting portion 202 is completed, the base 10 is raised under the action of the second elastic element 203, the abutting force received by the slider 1511 disappears, and the sliding block 1511 can extend out of the mounting slot 1501 and be located between the mounting seat 20 and the mounting seat 20. The matching position of the upper end of the base 10 plays a role of locking the matching position of the mounting seat 20 and the upper end of the base 10 to prevent the base 10 from moving up and down.

The embodiment of the present application further provides a moving door assembly, which includes a moving door 3 and a pulley device 2 mounted on and installed on the moving door 3 . As shown in Figures 10-12, when the pulley device 2 is installed on the moving door 3, the mounting seat 20 can be installed on the moving door 3 by using a second connecting assembly, and the second connecting assembly can include a connection with the moving door 3 and the installation The screw 31 , the metal sleeve 32 , the countersunk head sleeve 33 , the decorative cover 34 , and the screw sleeve 35 are matched with the seat 20 . Both the moving door 3 and the mounting base 20 may be provided with screw holes (not numbered) for cooperating with the screws 31 for mounting. The screws 31 can be inserted into the screw holes of the moving door 3 from the first side of the moving door 3 , and then inserted into the screw holes of the mounting seat 20 after extending out of the second side of the moving door 3 . A metal sleeve 32 and a countersunk head sleeve 33 may be installed between the screw 31 and the first side of the moving door 3 , and a decorative cover 34 may be provided at the end of the screw 31 . The screw sleeve 35 can fix the tail of the screw 31 to the mounting seat 20 . The second connecting assembly may also adopt other forms such as gluing, or an integrated design may be adopted for the second connecting assembly and the moving door 3, and no separate installation is required. The embodiment of the present application does not limit the implementation form of the second connecting assembly. .

In the embodiment of the present application, the mounting seat 20 of the pulley device 2 and the base 10 can be assembled with each other. After the mounting seat 20 is installed on the moving door 3 , when the pulley assembly 1 needs to be installed on the moving door 3 , the user only needs to install the base 10 of the pulley assembly 1 with the mounting seat 20, and then the pulley assembly 1 and the moving door 3 can be installed without any installation tools, and the operation is convenient.

As shown in FIGS. 20-21 , an embodiment of the present application further provides a moving door device, which includes a door frame 4 and a moving door assembly installed in cooperation with the door frame 4 . The door frame 4 is provided with a guide rail 41 , and the pulley 11 and the anti-bounce assembly 12 on the pulley assembly 1 of the moving door assembly are installed in cooperation with the guide rail 41 . When the pulley assembly 1 is installed with the guide rail 41, due to the high height of the anti-bounce assembly 12, the elastic block 121 is automatically rotated by the blocking force from the upper end of the door frame 4, and the height is lowered. At this time, the coil spring 122 is deformed, and the first The first pulley, the second pulley, and themselves can be smoothly installed in the guide rail 41. After the pulley assembly 1 enters the guide rail 41, the blocking force from the door frame 4 disappears, and the anti-bounce assembly 12 can automatically Returning to the initial position, the height is raised, which plays the role of filling the gap between the pulley 11 and the guide rail 41, and can prevent the jump caused by the excessive gap between the first pulley and the second pulley and the guide rail.

The installation or maintenance of the pulley device of the three-pulley structure in some technologies requires specialized personnel to use a lot of tools to complete the installation process, which makes the installation process of the shower room time-consuming and labor-intensive, and because the labor cost is getting higher and higher, it is not conducive to user experience. And as the pulley device of the double pulley structure in the background technology, when the shower room moving door is used for a period of time, due to various possible reasons, the pulley will be pulled out from the frame guide rail, which may cause harm to the human body, serious Sometimes it will even bring about the problem of customer compensation. The pulley assembly in the embodiment of the present application, by limiting the jumping space of the pulley in the guide rail, makes the pulley difficult to escape from the frame guide rail, which is safer; and the anti-jumping assembly and the pulley are both installed on the base, and are installed together with the pulley. The design of the matching guide rail makes the overall structure simple, which is convenient for users to install and replace by themselves, which can save labor costs and improve user experience.

In the description in the embodiments of the present application, the term "plurality" refers to two or more. In the description of the embodiments of the present application, the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners" The orientation or positional relationship indicated by , "periphery", "mouth structure", etc. are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the application and simplifying the description, rather than indicating or implying that The structures have a particular orientation, are constructed and operate in a particular orientation and are therefore not to be construed as limitations of the present application.

In the description of the embodiments of the present application, unless otherwise expressly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation" and "assembly" should be interpreted in a broad sense, For example, it may be a fixed connection, a detachable connection, or an integral connection; the terms "installation", "connection" and "fixed connection" may be directly connected or indirectly connected through an intermediate medium, and may be two elements Internal connectivity. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood in specific situations.

Although the embodiments disclosed in the present application are as above, the described contents are only the embodiments adopted to facilitate the understanding of the present application, and are not intended to limit the present application. Any person skilled in the art to which this application belongs, without departing from the spirit and scope disclosed in this application, can make any modifications and changes in the form and details of the implementation, but the scope of patent protection of this application must still be as defined by the appended claims.

Claims

A pulley assembly comprising:

pedestal;

one or more pulleys mounted on the base;

It also includes an anti-jump component mounted on the base, the anti-jump component is configured to be installed together with the one or more pulleys in a guide rail matched with the one or more pulleys and restrict the The jumping space of one or more pulleys within the guide rail.
The pulley assembly according to claim 1, wherein the anti-bounce assembly comprises a mounting shaft fixed on the base, a spring block mounted on the mounting shaft and capable of rotating on the mounting shaft, and The reset element is arranged on the installation shaft and clamps the elastic block.
The pulley assembly of claim 2, wherein the base includes one or more pulley mounting portions arranged along the direction of movement of the one or more pulleys, and a base, the one or more pulleys being connected to the one or more pulleys. The one or more pulley mounting parts are installed in cooperation with the base, and the anti-jump component is installed in cooperation with the base.
The pulley assembly according to claim 3, wherein the elastic block comprises a base and one or more wings extending from the base to the side, the base is fitted with the base, and each of the wings Extend over the corresponding pulley.
The pulley assembly according to claim 4, wherein the lower side of each wing portion is provided with an arc-shaped portion adapted to the corresponding pulley.
The pulley assembly according to claim 4, wherein the base comprises a base part provided on the base, and a reinforcement part installed in cooperation with the base part, and two sides of the top of the reinforcement part are provided with A protruding part, the protruding part is provided with a first shaft hole, the two sides of the base part are provided with protruding ribs, and the protruding ribs are provided with a second shaft hole corresponding to the first shaft hole, the installation The shaft is fitted with the first shaft hole and the second shaft hole.
The pulley assembly according to claim 3, wherein the base comprises a pulley seat and a pulley frame installed in cooperation with each other, and one end of the pulley frame is provided with the one or more pulley mounting parts and the base The other end of the pulley frame is provided with a connecting part; one end of the pulley seat includes a first installation groove, the connecting part is embedded in the first installation groove, and the pulley assembly also includes a first connecting assembly, The first connecting component extends from the bottom of the pulley seat into the first installation groove to fixedly connect the connecting portion with the pulley seat.
A pulley device, comprising: the pulley assembly according to any one of claims 1-7, and a mounting seat assembled with the pulley assembly, the mounting seat can be fixed on a moving door.
The pulley device according to claim 8, further comprising a positioning device provided at the upper end of the pulley seat, the positioning device comprising a positioning seat and a slider assembly, the positioning seat is provided with a mounting groove, and the slider assembly includes a positioning seat and a slider assembly. The first elastic element in the installation groove and the sliding block connected with the first elastic element, the sliding block protrudes from the rear end of the positioning device and abuts against the matching position of the installation seat and the upper end of the pulley seat.
The pulley device according to claim 8, wherein the other end of the pulley seat of the pulley assembly is further provided with a second installation groove penetrating to the upper end of the pulley seat, and the installation seat is installed in cooperation with the second installation groove; The mounting seat includes a snap groove at the upper part and a fitting part at the lower part, the upper part of the pulley seat is provided with a beam mounted on a pair of side walls of the second mounting groove, and the lower part of the pulley seat is provided with a beam. There is a buckling part located at the lower part of the second installation groove, the beam is clamped in the buckling groove, and the fitting part is embedded in the buckling part and mutually clamped with the buckling part.
The pulley device according to claim 10, wherein the mounting base further comprises one or more second elastic elements arranged in the clamping groove, and one end of the second elastic element abuts against the edge of the clamping groove. Bottom, the other end abuts the beam.
A moving door assembly comprising: a moving door and the pulley device according to any one of claims 8-11 mounted on the moving door.
A moving door device, wherein the moving door device comprises: a door frame, and the moving door assembly according to claim 12 installed in cooperation with the door frame, the door frame is provided with a guide rail, and a pulley block of the moving door assembly The pulley and anti-bounce assembly on the piece are installed in cooperation with the guide rail.