Pulley module, sliding lifting device and sliding door system

Abstract

The utility model belongs to the technical field of door and window hardware, and particularly relates to a pulley module, a sliding lifting device and a sliding door system.The pulley module enables a pulley to be movably adjusted according to the flatness condition of a bearing part through rigid contact fit among a bearing guide part, an adjusting driving component, a first limiting component and a second limiting component, and the sliding lifting device is convenient to use. The components are promoted to interact with each other through changes of the horizontal position and the longitudinal position, so that the pulleys are adjusted to be in the state of bearing contact with the bearing part, heavy doors and windows can be borne through the rigid contact matching mode, the stability and reliability of the pulley module are effectively improved, and the service life of the pulley module is prolonged. And a sliding door system applying the sliding door is more reliable and higher in bearing capacity.

Description

Technical Field

[0001] This utility model belongs to the field of door and window hardware technology, specifically a pulley module, a sliding lifting device and a sliding door system. Background Technology

[0002] Sliding doors and windows achieve sliding on a support structure, such as a track, by installing a pulley module at the bottom. Existing pulley modules include a support base at the bottom of the door or window and pulleys mounted on the support base. However, since existing pulleys are generally fixed on the support base, they cannot adaptively adjust their height according to the tilt of the support structure. This results in some pulleys not being in contact with the support structure, leading to uneven force distribution on the pulleys and affecting the service life of the entire module. Some pulley modules on the market can adapt to the tilt of the support structure, usually by using springs to allow the pulleys to move up and down. However, if the door or window is too heavy, the springs cannot withstand the excessive load, and this type of pulley module loses its adaptive function. Therefore, it is essential to develop a pulley module that can be used to support heavy doors and windows and can adapt to the tilt of the support structure. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing pulley modules that use springs to make the pulley adapt to the load-bearing part, which are not suitable for heavy doors and windows. This invention provides a method that achieves automatic adjustment of the pulley through the rigid contact cooperation between the load-bearing guide, the adjusting drive component, the first limiting component, and the second limiting component. This ensures that the pulley always maintains effective contact with the load-bearing part when the load-bearing part is uneven, thereby improving the load-bearing capacity.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A pulley module includes a support base, at least two support wheel assemblies, a first limiting member and a second limiting member, and an adjusting drive member. The support wheel assemblies are movably arranged along the length of the support base and include a support guide and pulleys rotatable relative to the support guide. The support guide has guide structures on opposite sides along the length of the support base. The first and second limiting members are spaced apart on the support base for limiting the support wheel assemblies on their sides, and the first and second limiting members are rigidly contacted with the guide structures corresponding to adjacent support wheel assemblies. The adjusting drive member is movably arranged between two adjacent support wheel assemblies along the length of the support base. The opposite sides of the adjusting drive member are rigidly contacted with the guide structures of the corresponding support wheel assemblies. The interaction between the support guide and the adjusting drive member responds to changes in the flatness of the support portion, ensuring that each pulley maintains load-bearing contact with the support portion. The positioning wheel assembly is disposed in the edge region of the support base and is configured to limit the degree of inclination of the support base along one side of the edge region when it makes load-bearing contact with the support portion.

[0006] Compared with the prior art, this application provides a pulley module suitable for bearing heavy doors and windows and capable of adaptively tilting the load-bearing part. This pulley module, through the rigid contact cooperation between the load-bearing guide, the adjusting drive component, the first limiting component, and the second limiting component, allows the pulleys to adjust their position (including changes in horizontal and vertical position) according to changes in the flatness of the load-bearing part when moving on it. This causes the load-bearing guide to push the adjacent adjusting drive component horizontally through the guide structure. The adjusting drive component then pushes the guide structure of another adjacent load-bearing guide, causing the corresponding load-bearing wheel assembly of that load-bearing guide to move. This load-bearing wheel assembly then acts on another adjusting drive component, and so on, until it reaches the first and second limiting components. The interaction of these components not only allows each pulley to adaptively maintain load-bearing contact with the load-bearing part, but also enables this rigid contact cooperation to support heavier doors and windows, effectively improving the stability and reliability of the pulley module, making the sliding door system using it more reliable and with stronger load-bearing capacity.

[0007] Furthermore, the system also includes a positioning wheel assembly disposed in the edge region of the support seat. This positioning wheel assembly is configured to limit the tilt of the support seat along one side of the edge region while maintaining load-bearing contact with the support portion. Since the pulley module of this application is equipped with pulleys that can adaptively adjust according to the movement of the support portion, in actual use, the support seat may tilt due to changes in the height of each pulley, causing the door leaf to tilt. To prevent excessive tilting of the door leaf, a positioning wheel assembly is disposed at one end of the support seat. This ensures that even when the support seat tilts towards the positioning wheel assembly, it will not tilt excessively. The maximum tilt is reached when the positioning wheel assembly makes load-bearing contact with the support portion, thereby preventing excessive tilting of the door leaf. The aforementioned load-bearing contact means that the positioning wheel assembly, while in contact with the support portion (such as a track), also bears the load of the support seat.

[0008] Furthermore, the positioning wheel assembly includes a positioning member and a positioning wheel rotatably mounted on the positioning member. The axis of the positioning wheel has a vertically variable degree of freedom relative to the support seat. A limiting structure is provided between the support seat and the positioning member to limit the engagement position of the support seat and the positioning member. The positioning wheel is configured to bear the load of the support seat at the engagement position. With the above-described positioning wheel assembly, when the support seat is not tilted to its maximum tilt, the positioning wheel assembly has a longitudinal degree of freedom, allowing it to move up and down relative to the support seat. When the support seat tilts to its maximum tilt, the support part pushes the positioning wheel upwards until the positioning member presses against the lower side of the limiting structure. At this time, the height of the bottom end of the positioning wheel is higher than the height of the bottom end of the pulley when it is in its lowest position. This configuration not only limits the maximum tilt of the support seat and prevents excessive tilting, but also makes assembly easier, provides greater freedom of movement, and allows the positioning wheel assembly and the support wheel assembly to be made identical in size, facilitating product design and mold making, and reducing production costs.

[0009] As an alternative to the aforementioned positioning wheel assembly, the positioning wheel assembly includes a positioning wheel whose axis is fixedly disposed relative to the bearing seat; the positioning wheel is configured such that its axis is at the same height as the axis of the pulley when it is in the lowest position, and its outer diameter is smaller than the outer diameter of the pulley. Alternatively, as an alternative, the positioning wheel is configured such that its axis is higher than the axis of the pulley when it is in the lowest position, and its outer diameter is the same as the outer diameter of the pulley. The above configuration is simple in structure and does not require the setting of positioning components and limiting structures, but because the positioning wheel is fixedly disposed relative to the bearing seat, the assembly is more complicated.

[0010] Furthermore, this application provides the following arrangement of the guide structure, the first limiting member, the second limiting member, and the adjustment driving member: the guide structure is configured as an arc surface or inclined surface formed by the outer periphery of the bearing guide member; the opposite sides of the adjustment driving member are provided with arc surfaces or inclined surfaces that cooperate with the guide structure; and / or, the inner side of the first limiting member is provided with an arc surface or inclined surface that cooperates with the guide structure; the inner side of the second limiting member is provided with an arc surface or inclined surface that cooperates with the guide structure.

[0011] Another improvement to the pulley module of this application includes a support base, multiple support wheel assemblies, a first limiting member, a second limiting member, and one or more adjusting drive members; wherein the multiple support wheel assemblies are movably arranged linearly along the support base, each support wheel assembly is configured with a pulley and a support guide portion disposed on the end side of the pulley; the first limiting member and the second limiting member are fixedly mounted on the support base at a distance from each other, and are respectively configured with a first limiting coupling portion and a second limiting coupling portion that are at least partially coupled to the support guide portions of the support wheel assemblies at the first and second ends, the first limiting coupling portion being configured to limit its coupling with the support wheel assemblies. The vertical limiting part of the vertical degree of freedom of the bearing wheel assembly; one or more adjusting drive members are movably disposed between two adjacent bearing wheel assemblies along the direction of the linear arrangement and are configured to be at least partially coupled to the corresponding bearing guide part, and move relative to the bearing seat in response to the force of the bearing guide part; in response to the change of the flatness of the bearing part, the interaction between the bearing guide part and the adjusting drive part keeps the pulley in bearing contact with the bearing part; the first limiting coupling part and the bearing wheel assembly coupled thereto limit the degree of inclination of the bearing seat along one side to keep it in bearing contact with the bearing part.

[0012] In this solution, the pulleys of each load-bearing wheel assembly participate in load-bearing simultaneously, which can effectively improve the stability and reliability of the pulley module, making the sliding door system using it more reliable and stronger in load-bearing capacity. In addition, by limiting the load-bearing wheel assembly coupled with it through the first limiting coupling part of the first limiting member, the load-bearing seat can be prevented from tilting excessively when each pulley is adjusted in height. Therefore, the excessive tilting of the doors and windows using this application is avoided in actual use, thus improving the reliability and stability of the pulley module.

[0013] Furthermore, the bearing guide portion adjacent to the first limiting member is configured as an arc surface coupled to the first limiting coupling portion and the adjustment drive portion. The vertical limiting portion is constructed as a concave arc shape. Through the concave arc structure, it is coupled to the arc-shaped bearing guide portion of the bearing wheel assembly coupled with it. When the two are coupled, the bearing wheel assembly can be vertically limited and linearly limited.

[0014] Furthermore, the edge of the vertical limiting part extends beyond the axis of the load-bearing guide part. This structure allows the load-bearing wheel assembly coupled with it to move a certain distance in a linear direction during load adjustment. Simultaneously, the limiting effect of the edge of the vertical limiting part controls the movement distance, ensuring the adjustment range remains within design requirements.

[0015] Furthermore, the support includes a housing and a base plate. The housing has a linearly extending assembly cavity with a lower opening. The first limiting member, one or more adjusting drive members, and the second limiting member are linearly mounted in the assembly cavity and abut against the top of the assembly cavity. The base plate is mounted on the lower side of the housing to limit the lowest position of the plurality of load-bearing wheel assemblies relative to the support. The first and second limiting members are fixedly configured relative to the housing at least relative to their adjacent ends. The pulleys of the plurality of load-bearing wheel assemblies extend beyond the lower side of the base plate. The above-described support configuration is simple in structure, and the modular design facilitates the assembly and disassembly of the various parts.

[0016] Furthermore, the support also includes a first end seat and a second end seat that are relatively fixedly disposed at both ends of the assembly cavity. The first limiting member and the second limiting member are respectively limited in their respective degrees of freedom by the first end seat and the second end seat. By limiting the degrees of freedom of the first limiting member and the second limiting member along the adjacent ends of the structure through the blocking of the first end seat and the second end seat, the structure is simple and economical.

[0017] Furthermore, the first and second limiting components are directly assembled by the cooperation between the outer shell, the first end seat, the second end seat, and the multiple load-bearing wheel assemblies, eliminating the need for connecting parts to fix the first and second limiting components. This design simplifies the structure of the first and second limiting components, facilitating production and assembly.

[0018] Furthermore, the load-bearing guide is constructed on both ends of the pulley, and two sets of the first limiting member, one or more adjusting drive members, and the second limiting member are linearly spaced apart. This design improves the stress distribution on the load-bearing wheel assembly and enhances its stability. Simultaneously, the location of the first limiting member, one or more adjusting drive members, and the second limiting member on both ends of the pulley reduces the volume in the linear direction, making the structure more compact.

[0019] Furthermore, the top of the one or more adjustment drive components is constructed with a drive assembly surface extending along the direction of the linear arrangement and movably engaging with the top wall of the assembly cavity. This surface contact engagement improves the load-bearing stability and the smoothness of the adjustment movement of the one or more adjustment drive components.

[0020] Furthermore, the first limiting member, one or more adjusting drive members, and the second limiting member are all sheet-like, and a limiting structure is constructed between the top wall and the side walls of the assembly cavity to limit the relative distance between the first limiting member, one or more adjusting drive members, and the second limiting member. This limiting structure ensures the relative distance between the first limiting member, one or more adjusting drive members, and the second limiting member, preventing interference with the pulley.

[0021] Furthermore, the limiting structure includes one or more protrusions, which form a movable groove for mounting the adjusting drive component between the protrusions and the side wall of the housing. The use of protrusions facilitates manufacturing, and especially when multiple protrusions are used at intervals, it can reduce material usage and save costs.

[0022] This application also provides a sliding lifting device using the above-mentioned pulley module, which includes the pulley module described above. The edge of the support seat extends outward along its length to form a support frame. The pulley module also includes a bracket movably disposed on the upper side of the support frame for connecting a door leaf. A guide positioning part is constructed on the upper side of the support frame. The guide positioning part is equipped with an inclined guide part and a horizontal locking part connected to the guide part. The bracket is equipped with a rotatable rolling member. The rolling member is equipped with a rolling coupling part that rolls with the guide positioning part. When the rolling coupling part slides upward along the guide part to the horizontal locking part, the bracket is lifted. When the rolling coupling part slides downward to the bottom of the guide part, the bracket is lowered. The above-mentioned sliding lifting device, through the cooperation of the guide positioning part and the rolling member, can guide the bracket to slide upward along the guide part to lift the door / window, and slide to the bottom of the guide part to lower the door / window, thereby allowing the door / window to switch between locked and sliding states.

[0023] Furthermore, the sliding lifting device also includes a lifting structure disposed at one end of the support frame. The lifting structure includes a lifting rod and a connecting rod assembly that is hinged to the lifting rod, an adjacent support, and the support frame respectively. The movement of the support responds to the rising and falling of the lifting rod. By setting the lifting structure, it can be linked with the handle of the door or window, and the lifting and lowering of the support can be controlled by the handle.

[0024] This application also provides a sliding door system using the above-mentioned pulley modules, including a door leaf and two of the above-mentioned pulley modules arranged on both sides of the bottom of the door leaf.

[0025] This application also provides another sliding door system using the above-mentioned pulley modules, which includes a door leaf, two pulley modules as described above, and a lifting structure. The edge of the support extends outward along its length to form a support frame. The pulley module also includes a bracket movably disposed on the upper side of the support frame and connected to the door leaf. The upper side of the support frame is provided with a guide positioning part. The guide positioning part is provided with an inclined guide part and a horizontal locking part connected to the guide part. The bracket is provided with a rotatable rolling member. The rolling member is provided with a rolling coupling part that rolls with the guide positioning part. The lifting structure is disposed between the door leaf and the pulley modules for controlling the movement of the bracket.

[0026] Furthermore, the positioning wheel assemblies of the two pulley modules are respectively located at the edge of the door leaf; or, the first limiting members of the two pulley modules are respectively located at the edge of the door leaf. The above settings can limit the maximum tilt angle on both sides of the door leaf and prevent excessive tilting.

[0027] The aforementioned sliding lifting device and sliding door system utilize the pulley module. Through the cooperation of components such as the support frame, bracket, guide positioning part, and lifting structure, this system not only achieves adaptive tilting of the support part but also enables smooth sliding and lifting of the door leaf. It can also be locked as needed, improving the convenience and safety of doors and windows. The pulley module of this application is not only suitable for traditional sliding doors but can also be applied to lifting sliding doors, meeting the needs of different application scenarios. It significantly improves the load-bearing capacity, stability, and service life of heavy-duty door and window systems and provides a more convenient and safer user experience. Attached Figure Description

[0028] Figure 1 This is a 3D view of the pulley module;

[0029] Figure 2 This is an exploded view of the pulley module;

[0030] Figure 3 This is a cross-sectional view of the pulley module, in which the load-bearing part is horizontal;

[0031] Figure 4 This is a cross-sectional view of the pulley module, in which the left side of the load-bearing part is inclined downward relative to the right side;

[0032] Figure 5 This is a 3D view of the load-bearing wheel assembly;

[0033] Figure 6 This is an exploded view of the load-bearing wheel assembly;

[0034] Figure 7 This is a diagram of the internal structure of the support base;

[0035] Figure 8 This is a structural diagram showing that the first limiting component, the second limiting component, the adjusting drive component are set as inclined planes, and the bearing guide component is set as a circular structure.

[0036] Figure 9 This is a schematic diagram of a structure in which the first limiting component, the second limiting component, the adjusting drive component are set as inclined surfaces, the guide part of the bearing guide component is set as an inclined surface, and the arc-shaped support surface is set as a circular arc surface;

[0037] Figure 10 This is a structural diagram of a sliding door system;

[0038] Figure 11 This is a schematic diagram of the sliding lifting device;

[0039] Figure 12 This is a schematic diagram of the sliding lifting device during the upward movement of the support.

[0040] Figure 13 This is an exploded view of the sliding lifting device;

[0041] Figure 14 This is a structural diagram of a lifting sliding door system;

[0042] Figure 15 A perspective view of another embodiment of the pulley module;

[0043] Figure 16 This is a cross-sectional view of another embodiment of the pulley module;

[0044] Figure 17 An breakdown of another embodiment of the pulley module Figure 1 ;

[0045] Figure 18 This is another breakdown of a different embodiment of the pulley module. Figure 2 ;

[0046] Figure 19 This is another breakdown of a different embodiment of the pulley module. Figure 3 ;

[0047] Figure 20 This is a structural diagram showing that the first limiting component, the second limiting component, the adjusting drive component are set as inclined planes, and the bearing guide component is set as a circular structure.

[0048] Figure 21 This is a structural diagram showing that the first limiting component, the second limiting component, the adjusting drive component are set as inclined surfaces, the bearing guide component is provided with a guiding inclined surface, and the arc-shaped support surface is set as a circular arc surface. Detailed Implementation

[0049] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0050] See Figure 1 , Figure 10 , Figure 11 , Figure 14 This embodiment provides a pulley module and a sliding lifting device and a sliding door system using the pulley module.

[0051] Among them, see Figures 1 to 6 The pulley module includes a support base 1, at least two movably arranged (including horizontally and longitudinally movable relative to the support base 1) along the length direction of the support base 1 bearing wheel assemblies 2, a first limiting member 3, a second limiting member 4, and an adjusting drive member 5. Each bearing wheel assembly 2 includes a bearing guide member 21 and a pulley 22 rotatably mounted on the bearing guide member 21. The first end guide member 21 is located on the end side of the pulley 22. Specifically, the bearing guide member 21 is mounted on the side of the pulley 22 via a rotating shaft 23, and the pulley 22 rotates around the rotating shaft 23. The bearing guide member 21 has guide structures 210 respectively constructed on opposite sides along the length direction of the support base 1. The first limiting member 3 and the second limiting member 4 are spaced apart on the support base 1 for limiting the side bearing wheel assemblies 2. Specifically, the first... The limiting member 3 and the second limiting member 4 are fixedly disposed at opposite ends of the at least two bearing wheel assemblies 2. In one specific arrangement, the first limiting member 3 is fixedly disposed at one end of the bearing seat 1 and rigidly contacts the guide structure 210 corresponding to the adjacent bearing wheel assembly 2. The second limiting member 4 is fixedly disposed at the other end of the bearing seat 1 and rigidly contacts the guide structure 210 corresponding to the adjacent bearing wheel assembly 2. The adjusting drive member 5 is movably disposed between two adjacent bearing wheel assemblies 2 along the length direction of the bearing seat 1. The opposite sides of the adjusting drive member 5 are rigidly contacted with the guide structure 210 of the corresponding bearing wheel assembly 2. The interaction between the bearing guide member 21 and the adjusting drive member 5 responds to the change in the flatness of the bearing part 100, so that each pulley 22 maintains bearing contact with the bearing part 100. The first limiting member 3, the second limiting member 4, the adjusting drive member 5, and the bearing guide member 21 can be made of metal materials or other existing technical materials that meet mechanical requirements. The wheel assembly 2 described in this application is configured with at least two units. When the wheel assembly 2 is configured with two units, the adjustment drive component 5 is configured with one unit. (See attached document.) Figure 2 The illustration shows an embodiment configured with four unit wheel assemblies 2 and three unit adjustment drive components 5.

[0052] The working principle of this utility model is as follows: Figure 4As shown, when the pulley module 10 moves to an uneven support section 100, such as when it travels on an inclined track, the undulating part of the support section 100 will push the corresponding pulley 22 upward, thus generating longitudinal and lateral forces. This causes the pulley 22 to drive its corresponding support guide 21 to move obliquely upward. The lateral force acts on the adjacent adjustment drive member 5, causing the adjustment drive member 5 to push its adjacent support guide 21. As a result, the support guide 21 drives the pulley 22 to move and adjust to the position corresponding to the support section 100, and continues to the next adjustment. The drive component 5 transmits the lateral force, causing the next load-bearing guide 21 to move its pulley 22 to adjust to the position corresponding to the load-bearing part 100. This process continues until the force is transmitted to the first limiting component 3 and the second limiting component 4. This allows each pulley 22 to reach a state of force balance under the interaction of the load-bearing guide 21, the drive component 5, the first limiting component 3, and the second limiting component 4, according to the undulation of the load-bearing part 100. This ensures that each pulley 22 can press down on the load-bearing part 100, achieving load-bearing contact and uniform force distribution.

[0053] like Figure 3 , Figure 8 and Figure 9 As shown, this application provides the following arrangement of guide structure 210, first limiting member 3, second limiting member 4, and adjustment drive member 5. The guide structure 210 is configured as an arc surface or inclined surface formed by the outer periphery of the bearing guide member 21; the opposite sides of the adjustment drive member 5 are provided with arc surfaces or inclined surfaces that cooperate with the guide structure 210; and / or, the inner side of the first limiting member 3 is provided with an arc surface or inclined surface that cooperates with the guide structure 210; the inner side of the second limiting member 4 is provided with an arc surface or inclined surface that cooperates with the guide structure 210.

[0054] like Figure 3 As shown, the bearing guide 21 is configured as a circular structure, and the adjusting drive component 21, the first limiting component 3, and the second limiting component 4 are configured as semi-circular structures; or, as shown... Figure 8 As shown, the bearing guide 21 is configured as a circular structure, and the adjusting drive component 5, the first limiting component 3, and the second limiting component 4 are configured as wedge-shaped structures; or, as shown... Figure 9 As shown, the bottom of the bearing guide 21 is set as an arc surface, the two side guide structures 210 are set as inclined surfaces, and the adjustment drive component 5, the first limiting component 3, and the second limiting component 4 are set as wedge-shaped structures.

[0055] See Figures 2 to 4As an improved solution, a positioning wheel assembly 6 is also provided in the edge region of the support seat 1. The positioning wheel assembly 6 is configured to limit the degree of inclination of the support seat 1 along one side of the edge region and maintain load-bearing contact with the support part 100. Since the pulley module 10 of this application is provided with pulleys 22 that can be adaptively adjusted according to the support part 100, in actual use, the support seat 1 may tilt due to the change in the height of each pulley 22, causing the door leaf 9 to tilt. In order to prevent the door leaf 9 from tilting excessively, the positioning wheel assembly 6 is provided at one end of the support seat 1 so that the support seat 1 will not tilt excessively once it tilts towards the positioning wheel assembly 6. When it tilts to the point that the positioning wheel assembly 6 is in load-bearing contact with the support part 100, the maximum tilt amount is reached, thereby preventing the door leaf 9 from tilting excessively. In addition, the positioning wheel assembly 6 also limits the adjustment range of the support wheel assembly 2 to avoid excessive adjustment of the pulley 22.

[0056] The load-bearing contact referred to in this utility model means that while the load-bearing wheel assembly 2 and the positioning wheel assembly 6 are in contact with the load-bearing part 100 (such as a track), they also bear the load of the load-bearing seat 1.

[0057] See Figures 2 to 4 The positioning wheel assembly 6 includes a positioning member 61, a positioning wheel 62 rotatably mounted on the positioning member 61, the axis of the positioning wheel 62 having a vertically variable degree of freedom relative to the support seat 1, and a first limiting structure 63 between the support seat 1 and the positioning member 61. The first limiting structure 63 is used to define the engagement position 101 between the support seat 1 and the positioning member 61. The positioning wheel 62 is configured to bear the load of the support seat 1 at the engagement position 101. The positioning wheel assembly 6 with the above-described configuration, as... Figure 3 As shown, when the support seat 1 is not tilted to its maximum tilt, the positioning wheel assembly 6 has a longitudinal degree of freedom, meaning it can move up and down relative to the support seat 1. When the support seat 1 is tilted to its maximum tilt, as... Figure 4 As shown, the bearing portion 100 pushes the positioning wheel 62 upward until the positioning member 61 presses against the lower side of the first limiting structure 63. At this time, the height of the bottom end of the positioning wheel 62 is higher than the height of the bottom end of the pulley 22 when it is in the lowest position. This arrangement not only limits the maximum tilt of the bearing seat 1 and prevents excessive tilting, but also makes the floating positioning wheel assembly 6 easier to assemble, with a higher degree of freedom. Furthermore, the dimensions of the positioning wheel assembly 6 and the bearing wheel assembly 2 can be made identical, facilitating product design and mold making, and reducing production costs. Simultaneously, the height setting of the positioning wheel 62 ensures that the pulley 22 can make load-bearing contact with the bearing portion 100. It should be noted that the bearing portion 100 mates with the concave mounting position in the middle of the pulley 22 and the positioning wheel 62, therefore... Figure 3 and Figure 4In the middle, the bearing part 100 is located at the lower part of the pulley 22.

[0058] like Figure 3 and Figure 4 As shown, the first limiting structure 63 is configured to be integrally formed with the first limiting member 3 or the second limiting member 4. It has a positioning groove 631 that adapts to the upper part of the positioning member 61. When located at the aforementioned engagement position 101, the upper part of the positioning member 61 is fitted into the positioning groove 631 to achieve positioning. As a specific configuration, the positioning groove 631 is an arc-shaped groove, and the positioning member 61 is an arc-shaped structure. This configuration effectively encloses the positioning member 61, thereby improving the lateral positioning effect and increasing the contact area between the positioning groove and the positioning member 61, thus reducing pressure and improving the durability of the positioning member 61 and the first limiting structure 63.

[0059] As an alternative to the aforementioned positioning wheel assembly 6 (not shown in the figure), the positioning wheel assembly 6 includes a positioning wheel 62 whose axis is fixedly disposed relative to the bearing seat 1; the positioning wheel 62 is configured such that its axis is at the same height as the axis of the pulley 22 when it is in the lowest position, and its outer diameter is smaller than the outer diameter of the pulley 22. Alternatively, as an alternative, the positioning wheel 62 is configured such that its axis is higher than the axis of the pulley 22 when it is in the lowest position, and its outer diameter is the same as the outer diameter of the pulley 22. The above configuration is simple in structure and does not require the positioning component 61 and the first limiting structure 63. However, since the positioning wheel 62 is fixedly disposed relative to the bearing seat 1, the assembly is relatively complicated.

[0060] See Figures 1 to 4 The support base 1 includes a housing 11 and a base plate 12. The housing 11 and the base plate 12 enclose an assembly cavity for accommodating the support wheel assembly 2, the first limiting member 3, the second limiting member 4, the adjustment drive member 5, and the positioning wheel assembly 6. The base plate 12 is constructed with through holes 14 corresponding to the support wheel assembly 2 and the positioning wheel assembly 6. The pulley 22 and the positioning wheel 62 extend out of the bottom of the support base 1 through the corresponding through holes 14. The base plate 12 defines the lowest position of the support guide 21 and the positioning member 61. When the support guide 21 and the positioning member 61 move down to abut against and support the upper side of the base plate 12, the pulley 22 and the positioning wheel 62 are in the lowest position. The above-mentioned method of defining the support guide 21 and the positioning member 61 by the base plate 12 is simple in structure and easy and convenient to assemble.

[0061] See Figure 6 Two load-bearing guide members 21 are provided along the axial direction of the pulley 22. The pulley 22 is located between the two load-bearing guide members 21. By providing two load-bearing guide members 21, the load capacity of the pulley module 10 can be improved.

[0062] See Figure 3 and Figure 4 The lower part of the bearing guide 21 has an arc-shaped support surface 211 that can be supported on the upper edge of the base plate 12 as the bearing wheel assembly 2 moves downward. The bearing guide 21 is preferably circular. The above configuration can convert sliding friction into rolling friction.

[0063] See Figure 2 and Figure 7 The adjusting drive component 5 is provided in two opposite positions to the bearing guide component 21. The top of the outer shell 11 has downwardly extending guide protrusions 13 on opposite sides. A horizontally extending movable groove 15 is formed between the guide protrusions 13 and the corresponding sidewall of the outer shell 11. The adjusting drive component 5 is movably embedded in the movable groove 15. The aforementioned movable groove 15 has a simple structure and facilitates the assembly and disassembly of the adjusting drive component 5, and the adjusting drive component 5 is less prone to jamming.

[0064] See Figure 10 This application also provides a sliding door system using the above-mentioned pulley module 10, including a door leaf 9 and two pulley modules 10.

[0065] Furthermore, the positioning wheel assemblies 6 of the two pulley modules 10 are respectively located at the edge positions of the door leaf 9, that is, the positioning wheel assemblies 6 are provided at both edge positions of the door leaf 9, thereby avoiding the bearing seat 1 from tilting too much towards either side.

[0066] See Figures 11 to 14 This application also provides a sliding door system using the aforementioned pulley module 10, comprising a door leaf 9, two pulley modules 10, and a lifting structure 8. The positioning wheel assemblies 6 of the two pulley modules 10 are respectively located at the edge positions of the door leaf 9. The edge of the support seat 1 extends outward along its length to form a support frame 16. The pulley module 10 also includes a bracket 7 movably disposed on the upper side of the support frame 16 and connected to the door leaf 9. A guide positioning part 161 is constructed on the upper side of the support frame 16. The guide positioning part 161 is equipped with an inclined guide part 161a and a horizontal locking part 161b connecting the guide part 161a. The bracket 7 is equipped with a rotatable rolling member 71, and the rolling member 71 is equipped with a rolling coupling part 711 that rolls with the guide positioning part 161. Positioning wheel assemblies 6 are provided at both edge positions of the door leaf 9 to prevent the support seat 1 from tilting too much to either side.

[0067] The lifting structure 8 includes a handle (not shown in the figure) mounted on the door leaf 9, a lifting rod 81 driven by the handle to rise and fall, and a connecting rod assembly 82. The connecting rod assembly 82 is hinged to the lifting rod 81, the adjacent support 7, and the support frame 16. The support seats 1 of the two pulley modules 10 are fixedly connected by a transmission member 84. The movement of the support seats 1 and the support 7 of the two pulley modules 10 responds to the rising and falling of the lifting rod 81. Specifically, when the lifting rod 81 rises, the connecting rod assembly 82 pulls the support seat 1 to move laterally towards the lifting rod 81, and pushes the support 7 to move away from the lifting rod 81 to the horizontal locking part 161b. When the lifting rod 81 falls, the connecting rod assembly 82 pushes the support seat 1 to move laterally away from the lifting rod 81, and pulls the support 7 to move towards the bottom of the guide part 161a.

[0068] Furthermore, the positioning wheel assemblies 6 of the two pulley modules 10 are respectively located at the edge positions of the door leaf 9, that is, the positioning wheel assemblies 6 are provided at both edge positions of the door leaf 9, thereby avoiding the bearing seat 1 tilting too much towards either side.

[0069] See Figures 15 to 19This utility model also provides another pulley module, including a support base 1, multiple support wheel assemblies 2, a first limiting member 3, a second limiting member 4, and one or more adjusting drive members 5; wherein the multiple support wheel assemblies 2 are movably arranged linearly along the support base 1, each support wheel assembly 2 is provided with a pulley 22 and a support guide portion 21' disposed on the end side of the pulley 22; the first limiting member 3 and the second limiting member 4 are fixedly installed on the support base 1 at intervals, and are respectively constructed with a first limiting coupling portion 301 and a second limiting coupling portion 401 that are at least partially coupled to the support guide portion 21' of the support wheel assembly 2 at the first and second ends, respectively, the first limiting coupling portion 301 being configured to limit the coupling therewith. The load-bearing wheel assembly 2 has a vertical limiting part 3011 for its vertical degree of freedom; one or more adjusting drive members 5 are movably disposed between two adjacent load-bearing wheel assemblies 2 along the direction of the linear arrangement and are configured with adjusting drive members 501 that are at least partially coupled to the corresponding load-bearing guide parts 21', and move relative to the load-bearing seat 1 in response to the force of the load-bearing guide parts 21'; in response to a change in the flatness of the load-bearing part 100, the interaction between the load-bearing guide parts 21' and the adjusting drive members 501 keeps the pulleys 22 in load-bearing contact with the load-bearing part 100; the first limiting coupling part 301 and the load-bearing wheel assembly 2 coupled thereto limit the degree of inclination of the load-bearing seat 1 along one side to keep it in load-bearing contact with the load-bearing part 100. The first limiting member 3, the second limiting member 4, the adjusting drive members 5 and the load-bearing guide parts 21' can be made of metal or other existing materials that meet mechanical requirements. The load-bearing wheel assembly 2 described in this application is configured with at least two units, and when the load-bearing wheel assembly 2 is configured with two units, the adjusting drive member 5 is configured with one unit. Appendix Figure 16 The illustration shows an embodiment configured with four unit wheel assemblies 2 and three unit adjustment drive components 5.

[0070] like Figure 16As shown, when the pulley module 10 moves to an uneven support section, such as an inclined track, the undulating portion of the support section 100 pushes upward against the corresponding pulley 22, thus generating longitudinal and lateral forces. This causes the pulley 22 to move its corresponding support guide 21' obliquely upward. The lateral force acts on the adjacent adjustment drive member 5, causing the adjustment drive member 5 to push against its adjacent support guide 21'. As a result, the support guide 21' moves the pulley 22 to adjust to the position corresponding to the support section 100, and continues to the next adjustment. The driving component 5 transmits the lateral force, causing the next load-bearing guide 21' to move its pulley 22 to adjust to press against the corresponding position of the load-bearing part 100. This process continues until the force is transmitted to the first limiting component 3 and the second limiting component 4. This allows each pulley 22 to reach a state of force balance under the interaction of each load-bearing guide 21', the adjusting driving component 5, the first limiting component 3, and the second limiting component 4, according to the undulation of the load-bearing part 100. This ensures that each pulley 22 can press down on the load-bearing part 100, achieving load-bearing contact and uniform force distribution.

[0071] See Figures 16 to 18 Since the pulley module 10 of this application is equipped with pulleys 22 that can be adaptively adjusted according to the load-bearing part 100, in actual use, the load-bearing seat 1 may tilt due to the change in the height of each pulley 22, causing the door leaf 9 to tilt. In order to prevent the door leaf 9 from tilting excessively, a first limiting member 3 is provided at the edge of the load-bearing seat 1. When the load-bearing seat 1 tilts to the point that the load-bearing guide part 21' presses against the vertical limiting part 3011, the maximum tilting amount is reached. At this time, the load-bearing wheel assembly 2 and the load-bearing part 100 are in load-bearing contact, and the load of the load-bearing seat 1 is borne. Therefore, even if the load-bearing seat 1 tilts towards the first limiting member 3, it will not tilt excessively, thereby preventing the door leaf 9 from tilting excessively. In addition, the first limiting member 3 also limits the adjustment range of the load-bearing wheel assembly 2, avoiding excessive adjustment of the pulley 22. Specifically, when the door leaf 9 tilts towards the first limiting member 3, the bearing guide part 21' of the adjacent bearing wheel assembly 2 is forced to push against the first limiting coupling part 301 and the adjacent adjustment drive member 5. At this time, the pulley 22 will move upward to the side of the adjacent adjustment drive member 5 for adjustment. When the bearing guide part 21' contacts the vertical limiting part 3011, it restricts the movement of the adjacent bearing wheel assembly 2, thereby allowing only other bearing wheel assemblies 2 to make adjustments, thereby controlling the tilt of the door leaf 9.

[0072] See Figures 16 to 18In one specific implementation, the bearing guide portion 21' adjacent to the first limiting member 3 is configured as an arc surface coupled to the first limiting coupling portion 301 and the adjustment drive portion 501. The vertical limiting portion 3011 is constructed as a concave arc shape, and is coupled to the arc-shaped bearing guide portion 21' of the bearing wheel assembly coupled with it through the concave arc structure. When the two are coupled, the top of the bearing guide portion 21' cooperates with the vertical limiting portion 3011, which can realize the vertical limiting of the bearing wheel assembly and the linear limiting (relative to the direction of its adjacent adjustment drive member 5).

[0073] See Figure 21 In another specific embodiment, the bearing guide portion 21' adjacent to the first limiting member 3 is provided with guide ramps 212 that are coupled to the first limiting coupling portion 301 and the adjustment drive portion 501 at relative intervals, and a blocking surface 213 connected between the two guide ramps 212 and defined by the vertical limiting portion. The vertical limiting portion 3011 is constructed as a horizontally extending linear structure, and vertical limiting can be achieved by the cooperation of the blocking surface 213 and the vertical limiting portion 3011.

[0074] In some embodiments, the edge of the vertical limiting part 3011 extends beyond the axis of the bearing guide part 21'. With the above structure, the bearing wheel assembly coupled with it can move a certain distance in a linear direction when participating in bearing adjustment. At the same time, due to the limiting effect of the edge of the vertical limiting part 3011, the moving distance can be controlled, so that the adjustment range is controlled within the design requirements.

[0075] See Figure 16 , Figure 20 and Figure 21 In some specific embodiments, the pulley 22 has a bearing guide 21 on its end side, and the bearing guide portion 21' is constructed from the outer periphery of the bearing guide 21. Specifically, the bearing guide 21 is disposed on the side of the pulley 22 via a rotating shaft 23, and the pulley 22 rotates around the rotating shaft 23. The bearing guide portion 21' is configured as an arc surface or an inclined surface. The opposite sides of the adjusting drive member 5 are constructed with arc surfaces or inclined surfaces coupled to the bearing guide portion 21'. And / or, the inner side of the first limiting member 3 is constructed with an arc surface or inclined surface coupled to the bearing guide portion 21'. The inner side of the second limiting member 4 is constructed with an arc surface or inclined surface coupled to the bearing guide portion 21'.

[0076] See Figures 15 to 19The support 1 includes a housing 11 and a base plate 12. The housing 11 has a linearly extending assembly cavity 11' with a lower opening. A first limiting member 3, one or more adjusting drive members 5, and a second limiting member 4 are linearly mounted on the assembly cavity 11' and abut against the top of the assembly cavity 11'. The base plate 12 is mounted on the lower side of the housing 11 to limit the lowest position of the plurality of support wheel assemblies relative to the support 1. The first limiting member 3 and the second limiting member 4 are fixedly configured relative to the housing 11 at least relative to their adjacent ends. The pulleys 22 of the plurality of support wheel assemblies 2 extend out of the lower side of the base plate 12. The above-described support 1 has a simple structure, and its modular design facilitates the assembly and disassembly of the various parts.

[0077] In some embodiments, the support 1 further includes a first end seat 1101 and a second end seat 1102 relatively fixedly disposed at both ends of the assembly cavity 11', and the first limiting member 3 and the second limiting member 4 are respectively defined by the first end seat 1101 and the second end seat 1102 to define the degrees of freedom on their respective sides. By limiting the degrees of freedom of the first limiting member 3 and the second limiting member 4 along the adjacent ends of the structure through the blocking of the first end seat 1101 and the second end seat 1102, the structure is simple and economical. Specifically, both ends of the outer shell 11 are locked to the first end seat 1101 and the second end seat by screws t1, and the bottom plate 12 is locked to the bottom of the first end seat 1101 and the second end seat 1102 by screws t2. Of course, in other embodiments, other existing connection structures, such as riveting, can also be used.

[0078] In some embodiments, the first limiting member 3 and the second limiting member 4 are directly assembled by the cooperation between the outer shell 11, the first end seat 1101 and the second end seat 1102 and the plurality of bearing wheel assemblies 2, so that the first limiting member 3 and the second limiting member 4 do not need to be fixed by connecting parts. That is, the outer sides of the first limiting member 3 and the second limiting member 4 abut against the first end seat 1101 and the second end seat 1102 respectively. Then, each adjusting drive member 5 is installed, and then each plurality of bearing wheel assemblies 2 are installed. The bottom plate 12 limits each adjusting drive member 5 in the assembly cavity 11'. Due to the limiting of each adjusting drive member 5 by each bearing guide part 21', and the simultaneous limiting of the first limiting member 3 and the second limiting member 4 in the linear direction by the two bearing guide parts 21' at the edge, the first limiting member 3, the second limiting member 4, each adjusting drive member 5 and each bearing wheel assembly 2 are encapsulated by the outer shell 11 and the bottom plate 12. By adopting the above scheme, the structure of the first limiting member 3 and the second limiting member 4 can be simplified, which is convenient for production and assembly.

[0079] In some embodiments, the load-bearing guide portion 21' is constructed on both ends of the pulley 22, and two sets (i.e., two units) of the first limiting member 3, one or more adjusting drive members 5, and the second limiting member 4 are linearly spaced apart. This design improves the force distribution on the load-bearing wheel assembly 2 and enhances its stability. Simultaneously, the location of the first limiting member 3, one or more adjusting drive members 5, and the second limiting member 4 on both ends of the pulley 22 reduces the volume in the linear direction, making the structure more compact.

[0080] In some embodiments, the top of the one or more adjustment drive members 5 is provided with a drive assembly surface 50 extending along the direction of the linear arrangement and movably engaging with the top wall of the assembly cavity 11'. This surface contact engagement can improve the load-bearing stability and the smoothness of the adjustment movement of the one or more adjustment drive members 5.

[0081] In some embodiments, the first limiting member 3, one or more adjusting drive members 5, and the second limiting member 4 are all sheet-like. A second limiting structure 13' is constructed between the top wall and the side walls of the assembly cavity 11' to limit the relative distance between the two sets of the first limiting member 3, one or more adjusting drive members 5, and the second limiting member 4. The second limiting structure 13' ensures the relative distance between the first limiting member 3, one or more adjusting drive members 5, and the second limiting member 4, thus avoiding interference with the pulley 22.

[0082] In some embodiments, the second limiting structure 13' includes one or more protrusions 13, which form a movable groove 15 for mounting the adjusting drive member 5 between the protrusions 13 and the sidewall of the housing 11. The use of protrusions facilitates manufacturing, and especially when multiple protrusions are spaced apart, it can reduce material usage and save costs. Figure 18 As shown, the second limiting structure 13' is composed of multiple spaced protrusions 13, which can reduce the use of materials and save costs.

[0083] like Figures 16 to 18 In the embodiment shown, the adjusting drive component 5, the first limiting component 3, and the second limiting component 4 are sheet-like.

[0084] See Figure 10 This application also provides a sliding door system using the above-mentioned pulley module 10, including a door leaf 9 and two pulley modules 10.

[0085] Furthermore, the first limiting members 3 of the two pulley modules 10 are respectively located at the edge of the door leaf 9, thereby preventing the bearing seat 1 from tilting too much towards either side.

[0086] See Figures 11 to 14This application also provides a sliding door system using the aforementioned pulley module 10, comprising a door leaf 9, two pulley modules 10 as described above, and a lifting structure 8. The edge of the support seat 1 extends outward along its length to form a support frame 16. The pulley module 10 further includes a bracket 7 movably disposed on the upper side of the support frame 16 and connected to the door leaf 9. A guide positioning part 161 is constructed on the upper side of the support frame 16. The guide positioning part 161 is equipped with an inclined guide part 161a and a horizontal locking part 161b connecting the guide part 161a. The bracket 7 is equipped with a rotatable rolling member 71, and the rolling member 71 is equipped with a rolling coupling part 711 that rolls with the guide positioning part 161. This design also prevents the support seat 1 from tilting too far to either side.

[0087] The lifting structure 8 includes a handle (not shown in the figure) mounted on the door leaf 9, a lifting rod 81 driven by the handle to rise and fall, and a connecting rod assembly 82. The connecting rod assembly 82 is hinged to the lifting rod 81, the adjacent support 7, and the support frame 16. The support seats 1 of the two pulley modules 10 are fixedly connected by a transmission member 84. The movement of the support seats 1 and the support 7 of the two pulley modules 10 responds to the rising and falling of the lifting rod 81. Specifically, when the lifting rod 81 rises, the connecting rod assembly 82 pulls the support seat 1 to move laterally towards the lifting rod 81, and pushes the support 7 to move away from the lifting rod 81 to the horizontal locking part 161b. When the lifting rod 81 falls, the connecting rod assembly 82 pushes the support seat 1 to move laterally away from the lifting rod 81, and pulls the support 7 to move towards the bottom of the guide part 161a. The method of raising and lowering the lever 81 by controlling it with a handle is existing technology and is not the inventive point of this utility model. For specific implementation methods, please refer to the existing Chinese patent document CN202320800612.3.

[0088] Furthermore, the first limiting members 3 of the two pulley modules 10 are respectively located at the edge positions of the door leaf 9, that is, positioning wheel assemblies 6 are provided at both edge positions of the door leaf 9, thereby preventing the bearing seat 1 from tilting too much towards either side.

[0089] See Figures 11 to 14This application also provides a sliding lifting device using the above-mentioned pulley module 10, which includes the pulley module 10. The side end of the support seat 1 extends outward along its length direction to form a support frame 16. The pulley module 10 also includes a support 7 movably disposed on the upper side of the support frame 16 for connecting the door leaf 9. A guide positioning part 161 is constructed on the upper side of the support frame 16. The guide positioning part 161 is provided with an inclined guide part 161a and a horizontal locking part 161b connected to the guide part 161a. The support 7 is provided with a rotatable rolling member 71. The rolling member 71 is provided with a rolling coupling part 711 that rolls with the guide positioning part 161. When the rolling coupling part 711 slides upward along the guide part 161a to the horizontal locking part 161b, the support 7 is lifted. When the rolling coupling part 711 slides downward to the bottom of the guide part 161a, it is lowered. The aforementioned sliding lifting device, through the cooperation of the guide positioning part 161 and the rolling member 71, can guide the support 7 to slide upward along the guide part 161a to realize the lifting of the door and window, and slide to the bottom of the guide part 161a to realize the lowering of the door and window, thereby enabling the door and window to switch between the locked and sliding states.

[0090] See Figure 11 and Figure 12 The sliding lifting device also includes a lifting structure 8 disposed at one end of the support frame 16. The lifting structure 8 includes a lifting rod 81 and a connecting rod assembly 82 that is hinged to the lifting rod 81, the adjacent support 7 and the support frame 16 respectively. The movement of the support 7 responds to the rising and falling of the lifting rod 81. By setting the lifting structure 8, it can be linked with the handle 83 of the door and window, and the lifting and lowering of the support 7 can be controlled by the handle 83.

[0091] Compared with the prior art, this application provides a pulley module 10 suitable for bearing heavy doors and windows and capable of adaptively tilting the load-bearing part 100. This pulley module 10, through the rigid contact cooperation between the load-bearing guide 21, the adjusting drive component 5, the first limiting component 3, and the second limiting component 4, can adjust its position (including changes in horizontal and vertical position) according to changes in the flatness of the load-bearing part 100 when moving on the load-bearing part. This causes the load-bearing guide 21 to push the adjacent adjusting drive component 5 horizontally through the guide structure 210, and the adjusting drive component 5 in turn pushes another… The guide structure 210 of an adjacent load-bearing guide 21 causes the load-bearing wheel assembly 2 corresponding to the load-bearing guide 21 to move. The load-bearing wheel assembly 2 then acts on another adjusting drive member 5, and so on, to the first limiting member 3 and the second limiting member 4. The interaction of these members not only enables each pulley 22 to adaptively maintain load-bearing contact with the load-bearing part, but also enables this rigid contact and fit to support heavier doors and windows, effectively improving the stability and reliability of the pulley module 10, making the sliding door system using it more reliable and stronger in load-bearing capacity.

[0092] The aforementioned sliding lifting device and sliding door system utilize the pulley module 10. Through the cooperation of components such as the support frame 16, bracket 7, guide and positioning part 161, and lifting structure 8, this system not only achieves adaptive tilting of the support part 100 but also enables smooth sliding and lifting of the door leaf 9. It can also be locked as needed, improving the convenience and safety of doors and windows. The pulley module 10 of this application is not only suitable for traditional sliding doors but can also be applied to lifting sliding doors, meeting the needs of different application scenarios. It significantly improves the load-bearing capacity, stability, and service life of heavy-duty door and window systems, and provides a more convenient and safer user experience.

[0093] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A pulley module, characterized in that, include: Support (1); At least two load-bearing wheel assemblies (2) are movably arranged along the length of the load-bearing seat (1). Each load-bearing wheel assembly (2) includes a load-bearing guide (21) and a pulley (22) that can rotate relative to the load-bearing guide (21). The load-bearing guide (21) has guide structures (210) on opposite sides along the length of the load-bearing seat (1). The first limiting member (3) and the second limiting member (4) are disposed at intervals on the bearing seat (1) to limit the bearing wheel assembly (2) on the side. The first limiting member (3) and the second limiting member (4) are respectively in rigid contact with the guide structure (210) corresponding to the adjacent bearing wheel assembly (2). An adjusting drive member (5) is movably disposed between two adjacent bearing wheel assemblies (2) along the length direction of the bearing seat (1), and the opposite sides of the adjusting drive member (5) are in rigid contact with the guide structure (210) of the corresponding bearing wheel assembly (2); The interaction between the load-bearing guide (21) and the adjustment drive member (5) responds to the change in the flatness of the load-bearing part (100), so that each pulley (22) maintains load-bearing contact with the load-bearing part (100).

2. The pulley module according to claim 1, characterized in that, The guide structure (210) is configured as an arc surface or inclined surface formed by the outer periphery of the bearing guide (21); the opposite sides of the adjustment drive member (5) are configured with arc surfaces or inclined surfaces that cooperate with the guide structure (210); and / or, the inner side of the first limiting member (3) is configured with an arc surface or inclined surface that cooperates with the guide structure (210); the inner side of the second limiting member (4) is configured with an arc surface or inclined surface that cooperates with the guide structure (210).

3. The pulley module according to claim 2, characterized in that, It also includes a positioning wheel assembly (6) disposed in the edge region of the bearing seat (1), the positioning wheel assembly (6) being configured to limit the degree of inclination of the bearing seat (1) along one side of the edge region and maintain load-bearing contact with the bearing portion (100).

4. The pulley module according to claim 3, characterized in that, The positioning wheel assembly (6) includes: Positioning component (61); The positioning wheel (62) is rotatably mounted on the positioning member (61), and the axis of the positioning wheel (62) has a vertically variable degree of freedom relative to the bearing seat (1); A first limiting structure (63) is provided between the bearing seat (1) and the positioning member (61). The first limiting structure (63) is used to limit the engagement position (101) of the bearing seat (1) and the positioning member (61). The positioning wheel (62) is configured to bear the load of the bearing seat (1) at the engagement position (101).

5. The pulley module according to claim 3, characterized in that, The positioning wheel assembly (6) includes a positioning wheel (62) whose axis is fixedly disposed relative to the bearing seat (1); the positioning wheel (62) is configured such that its axis is at the same height as the axis of the pulley (22) when it is in the lowest position, and its outer diameter is smaller than the outer diameter of the pulley (22); or, the positioning wheel (62) is configured such that its axis is higher than the axis of the pulley (22) when it is in the lowest position, and its outer diameter is the same as the outer diameter of the pulley (22).

6. The pulley module according to claim 4, characterized in that, The support base (1) includes a shell (11) and a base plate (12). The shell (11) and the base plate (12) enclose an assembly cavity for accommodating the support wheel assembly (2), the first limiting member (3), the second limiting member (4), the adjustment drive member (5), and the positioning wheel assembly (6). The base plate (12) is constructed with through holes (14) corresponding to the support wheel assembly (2) and the positioning wheel assembly (6). The pulley (22) and the positioning wheel (62) extend out of the bottom of the support base (1) through the corresponding through holes (14). The base plate (12) defines the lowest position of the support guide (21) and the positioning member (61).

7. The pulley module according to claim 6, characterized in that, Two of the bearing guide members (21) are provided along the axial direction of the pulley (22), and the pulley (22) is located between the two bearing guide members (21); Alternatively, the lower part of the bearing guide (21) is constructed with an arc-shaped support surface (211) that can be supported on the upper edge of the base plate (12) as the bearing wheel assembly (2) moves downward. Alternatively, two of the adjustment drive member (5) and the bearing guide member (21) are respectively arranged opposite to each other, and the top of the outer shell (11) is provided with guide protrusions (13) extending downward on opposite sides. The guide protrusions (13) and the corresponding sidewalls of the outer shell (11) form a movable groove (15) extending in the horizontal direction, and the adjustment drive member (5) is movably embedded in the movable groove (15).

8. A pulley module, characterized in that, include: Support (1); Multiple load-bearing wheel assemblies (2) are movably arranged linearly along the load-bearing seat (1), and each load-bearing wheel assembly (2) is equipped with a pulley (22) and a load-bearing guide (21') disposed on the end side of the pulley (22); The first limiting member (3) and the second limiting member (4) are fixedly installed on the bearing seat (1) at intervals. They are respectively constructed with a first limiting coupling part (301) and a second limiting coupling part (401) that are at least partially coupled to the bearing guide part (21') of the bearing wheel assembly (2) at the first end and the second end. The first limiting coupling part (301) is provided with a vertical limiting part (3011) that limits the vertical degree of freedom of the bearing wheel assembly (2) coupled with it. One or more adjustment drive members (5) are movably disposed between two adjacent load-bearing wheel assemblies (2) in the direction of the linear arrangement and are configured with adjustment drive units (501) that are at least partially coupled to the corresponding load-bearing guides (21'), and move relative to the load-bearing seat (1) in response to the force of the load-bearing guides (21'); In response to a change in the flatness of the bearing portion (100), the bearing guide portion (21') and the adjustment drive portion (501) interact to keep the pulley (22) in bearing contact with the bearing portion (100); the first limiting coupling portion (301) and its coupled bearing wheel assembly (2) limit the degree of inclination of the bearing seat (1) along one side to keep it in bearing contact with the bearing portion (100).

9. The pulley module according to claim 8, characterized in that, The bearing guide (21') adjacent to the first limiting member (3) is configured as an arc surface coupled to the first limiting coupling part (301) and the adjustment drive part (501); The vertical limiting part (3011) is constructed in a concave arc shape; or, The vertical limiting part (3011) is constructed in a concave arc shape, and the edge of the vertical limiting part (3011) extends beyond the axis of the bearing guide part (21'). or, The bearing guide portion (21') adjacent to the first limiting member (3) is provided with guide ramps (212) that are relatively spaced apart and coupled to the first limiting coupling portion (301) and the adjustment drive portion (501), and a blocking surface (213) that is connected between the two guide ramps (212) and defined by the vertical limiting portion. The vertical limiting part (3011) is constructed as a horizontally extending linear structure; or, The vertical limiting part (3011) is configured as a horizontally extending linear structure, with the edge of the vertical limiting part (3011) extending outward to the axis of the bearing guide part (21').

10. The pulley module according to claim 8, characterized in that, The pulley (22) has a bearing guide (21) on its end side, and the bearing guide part (21') is formed by the outer periphery of the bearing guide (21); The bearing guide (21') is configured as an arc surface or a slope; the opposite sides of the adjustment drive member (5) are configured with arc surfaces or slopes coupled to the bearing guide (21'); and / or, the inner side of the first limiting member (3) is configured with an arc surface or slope coupled to the bearing guide (21'); the inner side of the second limiting member (4) is configured with an arc surface or slope coupled to the bearing guide (21').

11. The pulley module according to claim 8, characterized in that, The pulley (22) has a bearing guide (21') on both ends, and the first limiting member (3), one or more adjusting drive members (5) and the second limiting member (4) are linearly assembled in two sets.

12. The pulley module according to any one of claims 8 to 11, characterized in that, The support (1) includes a housing (11) and a base plate (12). The housing (11) is configured with a linearly extending assembly cavity (11') with a lower opening. A first limiting member (3), one or more adjusting drive members (5) and a second limiting member (4) are linearly mounted on the assembly cavity (11') and abut against the top of the assembly cavity (11'). The base plate (12) is mounted on the lower side of the housing (11) to limit the lowest position of the plurality of load-bearing wheel assemblies relative to the support (1). The first limiting member (3) and the second limiting member (4) are fixedly configured relative to the housing (11) at least relative to their adjacent end sides. The pulleys (22) of the plurality of load-bearing wheel assemblies (2) extend out of the lower side of the base plate (12).

13. The pulley module according to claim 12, characterized in that, The bearing seat (1) further includes a first end seat (1101) and a second end seat (1102) that are relatively fixedly disposed at both ends of the assembly cavity (11'), and the first limiting member (3) and the second limiting member (4) are respectively limited by the first end seat (1101) and the second end seat (1102) to define the degree of freedom of the corresponding side; And / or, the top of the one or more adjustment drive members (5) is configured with a drive assembly surface (50) extending in the direction of the linear arrangement and movably engaging with the top wall of the assembly cavity (11').

14. The pulley module according to claim 13, characterized in that, The first limiting member (3) and the second limiting member (4) are directly assembled by the cooperation between the outer shell (11), the first end seat (1101) and the second end seat (1102) and the multiple bearing wheel assemblies (2), so that the first limiting member (3) and the second limiting member (4) do not need to be fixed by connecting parts.

15. The pulley module according to claim 12, characterized in that, The first limiting member (3), one or more adjusting drive members (5), and the second limiting member (4) are all sheet-like. A second limiting structure (13') is constructed between the top wall and the side walls of the assembly cavity (11') to limit the relative distance between the two groups of the first limiting member (3), one or more adjusting drive members (5), and the second limiting member (4).

16. The pulley module according to claim 15, characterized in that, The second limiting structure (13') includes one or more protrusions (13), which are configured with a movable groove (15) for mounting the adjustment drive member (5) between the protrusions (13) and the side wall of the housing (11).

17. A sliding lifting device, characterized in that, The pulley module (10) includes any one of claims 1 to 16, wherein the side end of the support seat (1) extends outward along its length direction to form a support frame (16), and the pulley module (10) further includes a bracket (7) movably disposed on the upper side of the support frame (16) for connecting the door leaf (9), the upper side of the support frame (16) is provided with a guide positioning part (161), the guide positioning part (161) is provided with an inclined guide part (161a) and a horizontal locking part (161b) connected to the guide part (161a), the bracket (7) is provided with a rotatable rolling member (71), and the rolling member (71) is provided with a rolling coupling part (711) that rolls with the guide positioning part (161).

18. A sliding door system, characterized in that, Includes a door leaf (9) and two pulley modules (10) as described in any one of claims 1 to 16 arranged on both sides of the bottom of the door leaf (9).

Images