Sliding wheel assembly and door and window system comprising the same

Abstract

The utility model discloses a sliding wheel assembly and door and window system including it, sliding wheel assembly includes: shell, inner shell is used for with track sliding connection, and the inner shell is set up in the shell up and down activity, and is provided with first guide structure and second guide structure between shell and inner shell, damping assembly includes damper and two movable block, and damper sets up in the inner shell, and two movable block sets up respectively in the both ends of damper. First guide structure and second guide structure integrate the guiding and the limiting function in the cooperation of guide groove and axle body, and first axle body is limited in the first clamping position of parallelogram, and second axle body is limited in the second clamping position of parallelogram, thereby can adjust the height position of the both ends of inner shell and two movable block, need not additional complex transmission component, guarantee the integrity of inner shell structure, simplify the connection between movable block and damper, improve the structural stability of whole sliding wheel assembly, reduce the damage risk due to the structural instability.

Description

Technical Field

[0001] This utility model belongs to the technical field of door and window hardware accessories, specifically relating to a sliding wheel assembly and a door and window system including the same. Background Technology

[0002] In existing door and window systems, to simplify the overall structure, there is a sliding wheel assembly that combines a damper and a pulley. This sliding wheel assembly is installed on the door body and can provide both guiding and damping functions. This sliding wheel assembly includes a pulley and a lever block. However, the height of both the pulley and the lever block is difficult to adjust, making it difficult to adapt to door and window systems of different sizes. During the movement of the door body, problems may occur such as the pulley jumping in the track or the lever block failing to cooperate with the stop block on the track.

[0003] To address the aforementioned issues, Chinese Patent Publication No. CN204343864U discloses a single-wheel sliding wheel assembly with a damper, comprising, from the inside out, an inner clamp, a clamp seat, and an outer clamp. The inner clamp houses the damper assembly, which includes a fixed seat, a damper, and a tension spring. A damper actuating plate is fitted into the radial through groove of the fixed seat, extending from the lower end of the inner clamp. The damper actuating plate is equipped with a "7"-shaped fixing hook. The clamp seat has a pair of sliding wheel mounting holes, each housing a sliding wheel. The outer clamp has two or more pairs of parallel oblong holes, and the clamp seat and inner clamp each have two or more pairs of pin holes corresponding to the oblong holes. Movable rivets pass through the oblong holes of the outer clamp, the pin holes on the clamp seat, and the pin holes of the inner clamp, connecting the outer clamp, clamp seat, and inner clamp into a single unit. This single-wheel sliding wheel assembly is easy to install and adjust, can achieve synchronous damping, and has a good damping effect, ensuring the smooth operation of the door and preventing shaking or jumping.

[0004] Because the door needs to move frequently left and right along the track, in order to keep the door stable and noiseless during both left and right movements, it is usually necessary to install the aforementioned single-wheel sliding wheel assembly on both sides of the door to achieve bidirectional damping function. This increases the overall complexity and manufacturing cost of the door and window system. To solve this problem, the inventors of this utility model attempted to improve the aforementioned single-wheel sliding wheel assembly by installing a sliding wheel at each end of its clamp and a toggle block at each end of its damper to cooperate with the two stops of the track. However, during the movement of the door along the track, if the door tilts relative to the track, the sliding wheel at one end of the clamp is prone to jumping, and the toggle block at one end of the damping tube will have difficulty cooperating with the stops or hooks on the track, making it difficult to provide a stable bidirectional damping effect, and may even lead to the failure or damage of the damper.

[0005] Therefore, in order to enable the sliding wheel assembly to achieve bidirectional damping function through a single damping tube, while also having an adjustment function to adapt to door and window systems of different sizes and installation conditions, and to maintain a stable bidirectional damping effect even when there is tilt between the door and the track, the inventor of this utility model has previously provided a Chinese patent with publication number "CN222879494U" entitled "Sliding Wheel Assembly and Door and Window System Including the Sliding Wheel Assembly". The sliding wheel assembly includes an outer shell, a first inner shell, a second inner shell, a damping component, a first pulley, and a second pulley; the first inner shell is vertically movably connected to the outer shell, and the second inner shell is vertically movably connected to the outer shell; the first pulley is rotatably disposed in the first inner shell, and the second pulley is rotatably disposed in the second inner shell; the damping component includes a first actuating block, a second actuating block, and a damping tube, the first actuating block and the second actuating block being rotatably connected to the two ends of the damping tube, and the first actuating block being slidably connected to the first inner shell, and the second actuating block being slidably connected to the second inner shell. However, during the use of this pulley assembly, since the first inner shell and the second inner shell need to move up and down relative to each other, the connection between the first and second actuating blocks and the two ends of the damping tube needs to be achieved through the connection of the waist-shaped groove and the rotating shaft. The rotating shaft is rotatably connected to the waist-shaped groove to adapt to the relative displacement between the first and second inner shells, thereby adjusting the position and attitude of the first and second actuating blocks. However, this adaptive structure has the problems of being easily damaged and not stable enough. Utility Model Content

[0006] In order to overcome at least one of the defects of the prior art, the present invention provides a sliding wheel assembly and a door and window system including the sliding wheel assembly. The sliding wheel assembly can achieve bidirectional damping function through a single damper, has a height adjustment function to adapt to door and window systems of different sizes and installation conditions, and can maintain a stable bidirectional damping effect when tilting occurs between the door body and the track, while improving the structural stability and durability of the entire sliding wheel assembly.

[0007] The technical solution adopted by this utility model to solve its problem is: A sliding wheel assembly includes: a housing; an inner housing for sliding connection with a track, the inner housing being movably disposed within the housing, and a first guide structure and a second guide structure being disposed between the housing and the inner housing; a damping assembly including a damper and two actuating blocks, the damper being disposed within the inner housing, and the two actuating blocks being respectively disposed at both ends of the damper; the first guide structure including a first shaft, a first guide groove, and a second guide groove, the first guide groove being disposed within the housing, the second guide groove being disposed at a first end of the inner housing, the first guide groove and the second guide groove intersecting each other; the first guide groove forming a first angle with the length direction of the housing, and the second guide groove intersecting the length direction of the inner housing. A second included angle is formed between the length directions of the inner shell and the first included angle, which is equal to the second included angle. The first shaft is simultaneously slidably disposed in the first guide groove and the second guide groove. A second guide structure includes a second shaft, a third guide groove, and a fourth guide groove. The third guide groove is disposed in the outer shell, and the fourth guide groove is disposed in the second end of the inner shell. The third guide groove and the fourth guide groove intersect each other. A third included angle is formed between the third guide groove and the length direction of the outer shell, and a fourth included angle is formed between the fourth guide groove and the length direction of the inner shell. The third included angle and the fourth included angle are equal. The second shaft is simultaneously slidably disposed in the third guide groove and the fourth guide groove.

[0008] As an optional implementation, the widths of the first guide groove and the second guide groove are equal, and the widths of the third guide groove and the fourth guide groove are equal.

[0009] As an optional implementation, the first included angle and the third included angle are equal, and the second included angle and the fourth included angle are equal.

[0010] As an optional implementation, the outer shell is provided with a sliding groove extending in the vertical direction, and the inner shell is provided with a guide post, the guide post and the sliding groove being slidably connected; when the first end or the second end of the inner shell moves downward, the guide post provides a support point for the inner shell.

[0011] As an alternative implementation, the guide post is located outside the two actuating blocks along the length of the inner shell.

[0012] As an optional implementation, the sliding wheel assembly further includes a first elastic element and a second elastic element; the first elastic element is disposed between the outer shell and the first end of the inner shell, and the first elastic element is used to provide an upward elastic force to the first end of the inner shell; the second elastic element is disposed between the outer shell and the second end of the inner shell, and the second elastic element is used to provide an upward elastic force to the second end of the inner shell.

[0013] As an optional implementation, when neither end of the inner shell is under pressure, the first elastic element and the second elastic element can cause the inner shell and the outer shell to be parallel to each other.

[0014] As an optional implementation, the sliding wheel assembly further includes a first pulley disposed at a first end of the inner shell. When the first pulley is pressed, the first end of the inner shell can move up and down relative to the outer shell under the guidance of the first guide structure; and / or, the sliding wheel assembly further includes a second pulley disposed at a second end of the inner shell. When the second pulley is pressed, the second end of the inner shell can move up and down relative to the outer shell under the guidance of the second guide structure.

[0015] As an optional implementation, the actuating block includes a first actuating block and a second actuating block, which are respectively connected to the two ends of the damper; the first actuating block is closer to the first pulley relative to the second pulley, and the highest point of the first actuating block is higher than the highest point of the first pulley; the second actuating block is closer to the second pulley relative to the first pulley, and the highest point of the second actuating block is higher than the highest point of the second pulley.

[0016] In addition, this utility model also provides a door and window system, including the sliding wheel assembly as described in any of the above embodiments.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: Firstly, both actuating blocks can act on the damper to make the damper extend and retract. The damper can provide buffering when the door moves left or right along the track. In this way, only one damper can provide bidirectional damping function for the door and window system. The structure is simple and the production cost is low.

[0018] Secondly, under the guidance of the first and second guide structures, the positions of the first and second ends of the inner shell relative to the outer shell can be adaptively adjusted, thereby adjusting the height positions of the two ends of the inner shell and the two actuating blocks. This ensures that the sliding wheel assembly meets different size requirements, making it convenient for application. Furthermore, it ensures that when there is an inclination between the door and the track, the two actuating blocks can stably cooperate with the two stops in the track, and that the inner shell can stably slide along the track. This avoids problems such as the inner shell jumping, the actuating blocks failing to cooperate, resulting in unstable bidirectional damping effect, damper failure, or damage when the door and the track are tilted.

[0019] Thirdly, by setting a first guide structure and a second guide structure between the outer shell and the inner shell, a dynamically changing parallelogram-shaped first clamping position is always formed between the first guide groove and the second guide groove, and the axis of the first shaft is always located at the center of the first clamping position. A dynamically changing parallelogram-shaped second clamping position is always formed between the third guide groove and the fourth guide groove, and the axis of the second shaft is always located at the center of the second clamping position. In this way, precise guidance can be provided for the relative movement between the inner shell and the outer shell, and more accurate and stable motion constraints can be provided for the first shaft and the second shaft. This ensures that the shaft always slides along the predetermined trajectory during the movement, effectively avoiding problems such as jamming, offset or disengagement of the shaft in the guide groove, improving the reliability and stability of the guide structure. Furthermore, the above-mentioned guide structure integrates the guiding and limiting functions into the cooperation between the guide groove and the shaft, eliminating the need for additional complex transmission components, ensuring the integrity of the inner shell structure (no need to divide the inner shell into two sections), simplifying the connection between the toggle block and the damper (no need to set the waist-shaped groove), making the overall structure more compact, improving the structural stability and durability of the entire sliding wheel assembly, and reducing the risk of damage caused by structural instability. At the same time, this direct and efficient cooperation method can reduce energy loss during transmission, improve transmission efficiency, and help improve the overall performance of the device. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the sliding wheel assembly according to an embodiment of this application (in which case the outer shell and the inner shell are parallel to each other); Figure 2 yes Figure 1 Enlarged view of part A in the middle; Figure 3 This is a schematic diagram of the sliding wheel assembly according to an embodiment of this application (in which the first end of the inner shell moves downward relative to the outer shell); Figure 4 yes Figure 3 Enlarged view of part B in the middle; Figure 5 This is a schematic diagram of the sliding wheel assembly according to an embodiment of this application (in which the second end of the inner shell moves downward relative to the outer shell); Figure 6 yes Figure 5 Enlarged view of a section in the middle C; Figure 7This is an exploded structural diagram of the sliding wheel assembly according to an embodiment of this application; Figure 8 This is a schematic diagram of the sliding wheel assembly in the embodiment of this application, showing its engagement between the door frame and the track. Figure 9 This is a schematic diagram of the damping component of the pulley assembly; Figure 10 This is a schematic diagram of the cooperation state of the sliding wheel assembly and the track (when the track is inclined to the horizontal plane and the door is parallel to the horizontal plane) according to an embodiment of this application; Figure 11 This is a schematic diagram of the cooperation state of the sliding wheel assembly and the track (when the track is parallel to the horizontal plane and the door is tilted to the horizontal plane) in an embodiment of this application; Figure 12 This is a schematic diagram of the first included angle, the second included angle, the third included angle, and the fourth included angle in the embodiments of this application.

[0022] Explanation of key figure labels: 1. Outer shell; 11. First guide groove; 12. Third guide groove; 13. Slide groove; 2. Inner shell; 21. Second guide groove; 22. Fourth guide groove; 23. Guide post; 3. First shaft; 4. Second shaft; 5. First pulley; 6. Second pulley; 7. Damping assembly; 71. Damper; 711. First pivot; 712. Second pivot; 72. Actuating block; 721. First actuating block; 722. Second actuating block; 8. First guide structure; 9. Second guide structure; 10. First elastic element; 20. Second elastic element; 30. Track; 40. Door frame; a. First included angle; b. Second included angle; c. Third included angle; d. Fourth included angle. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0025] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0026] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0027] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0028] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0029] Please see Figures 1 to 9 This application provides a sliding wheel assembly, including a housing 1, an inner housing 2, and a damping component 7. The housing 1 is fixed to the door frame 40, providing an installation base for the entire sliding wheel assembly. The inner housing 2 is slidably connected to the track and is vertically movable within the housing 1. A first guide structure 8 and a second guide structure 9 are provided between the housing 1 and the inner housing 2. The first guide structure 8 and the second guide structure 9 are used to precisely guide the movement of both ends of the inner housing 2, ensuring the stability and accuracy of the movement of the inner housing 2. The damping component 7 includes a damper 71 and two actuating blocks 72. The damper 71 is disposed in the inner housing 2, and the two actuating blocks 72 are respectively disposed at both ends of the damper 71. The two actuating blocks 72 are respectively used to cooperate with two stops provided in the track 30. Both actuating blocks 72 can act on the damper 71 to make the damper 71 extend and retract, providing buffering during the movement of the door body to the left or right along the track 30, realizing a bidirectional damping function. like Figure 2 , Figure 4 , Figure 7 and Figure 12As shown, the first guide structure 8 includes a first shaft 3, a first guide groove 11 and a second guide groove 21. The first guide groove 11 is disposed on the outer shell 1, and the second guide groove 21 is disposed on the first end of the inner shell 2. The first guide groove 11 and the second guide groove 21 intersect each other. The first guide groove 11 forms a first included angle α with the length direction of the outer shell 1, and the second guide groove 21 forms a second included angle β with the length direction of the inner shell 2. The first included angle α and the second included angle β are equal. The first shaft 3 is simultaneously slidably disposed in the first guide groove 11 and the second guide groove 21. The first guide groove 11 and the second guide groove 21 always form a dynamically changing parallelogram first clamping position. The axis of the first shaft 3 is always located at the center of the first clamping position. When the first end of the inner shell 2 is pressed, under the guidance of the first guide structure 8, the first end of the inner shell 2 can move up and down relative to the outer shell 1 to adjust the height of the first end of the inner shell 2.

[0030] like Figure 6 , Figure 7 and Figure 12 As shown, the second guide structure 9 includes a second shaft 4, a third guide groove 12 and a fourth guide groove 22; the third guide groove 12 is disposed on the outer shell 1, and the fourth guide groove 22 is disposed on the second end of the inner shell 2, and the third guide groove 12 and the fourth guide groove 22 intersect each other. The third guide groove 12 forms a third included angle c with the length direction of the outer shell 1, and the fourth guide groove 22 forms a fourth included angle d with the length direction of the inner shell 2. The third included angle c and the fourth included angle d are equal. The second shaft 4 is simultaneously slidably disposed in the third guide groove 12 and the fourth guide groove 22. The third guide groove 12 and the fourth guide groove 22 always form a dynamically changing parallelogram second clamping position. The axis of the second shaft 4 is always located at the center of the second clamping position. When the second end of the inner shell 2 is pressed, under the guidance of the second guide structure 9, the second end of the inner shell 2 can move up and down relative to the outer shell 1 to adjust the height of the second end of the inner shell 2.

[0031] It should be noted that the first clamping position is a parallelogram formed by the straight lines containing the two sides of the first guide groove 11 and the two sides of the second guide groove 21, and the shape of the first clamping position is not affected by the shape of the end of the guide groove. Furthermore, in the plane projection along the axial direction of the first shaft 3, the first shaft 3 is always simultaneously tangent to the two sides of the first guide groove 11 and the two sides of the second guide groove 21.

[0032] It should be noted that the second clamping position is a parallelogram formed by the straight lines containing the two sides of the third guide groove 12 and the two sides of the fourth guide groove 22, and the shape of the second clamping position is not affected by the shape of the end of the guide groove. Furthermore, in the plane projection along the axial direction of the second shaft 4, the second shaft 4 is always simultaneously tangent to the two sides of the third guide groove 12 and the two sides of the fourth guide groove 22.

[0033] The sliding wheel assembly provided in this application has the following beneficial technical effects: Firstly, both actuating blocks 72 can act on the damper 71 to make the damper 71 extend and retract. The damper 71 can provide buffering when the door moves left or right along the track 30. In this way, only one damper 71 can provide bidirectional damping function for the door and window system. The structure is simple and the production cost is low.

[0034] Secondly, under the guidance of the first guide structure 8 and the second guide structure 9, the positions of the first and second ends of the inner shell 2 relative to the outer shell 1 can be adaptively adjusted, thereby adjusting the height positions of the two ends of the inner shell 2 and the two actuating blocks 72. This ensures that the sliding wheel assembly meets different size requirements and is convenient for application. Furthermore, it ensures that when there is an inclination between the door and the track 30, the two actuating blocks 72 can stably cooperate with the two stops in the track 30, and that the inner shell 2 can stably slide along the track 30. This avoids the problems of the inner shell 2 jumping, the actuating blocks 72 failing to cooperate, resulting in unstable bidirectional damping effect, and the damper 71 failing or being damaged when the door and the track 30 are tilted.

[0035] Thirdly, by setting a first guide structure 8 and a second guide structure 9 between the outer shell 1 and the inner shell 2, the first shaft 3 is limited to a first clamping position in the shape of a parallelogram, and the second shaft 4 is limited to a second clamping position in the shape of a parallelogram. This provides precise guidance for the relative movement between the inner shell 2 and the outer shell 1, and provides more accurate and stable motion constraints for the first shaft 3 and the second shaft 4. This ensures that the shaft always slides along a predetermined trajectory during movement, effectively avoiding problems such as jamming, offsetting, or dislodging of the shaft in the guide groove. This improves the reliability and stability of the guide structure. Furthermore, the above-mentioned guide structure integrates the guiding and limiting functions into the cooperation between the guide groove and the shaft, eliminating the need for additional complex transmission components. This ensures the integrity of the inner shell 2 structure (without having to divide the inner shell 2 into two sections), simplifies the connection between the toggle block 72 and the damper 71 (without having to set a waist-shaped groove), makes the overall structure more compact, improves the structural stability and durability of the entire sliding wheel assembly, and reduces the risk of damage caused by structural instability. At the same time, this direct and efficient cooperation method can reduce energy loss during transmission, improve transmission efficiency, and help improve the overall performance of the device.

[0036] It is understandable that the length direction of the outer shell 1 is also the direction in which the outer shell 1 moves with the door. The length direction of the inner shell 2 is also the direction in which the inner shell 2 slides on the track.

[0037] like Figures 1 to 7 As shown, in one embodiment, the widths of the first guide groove 11 and the second guide groove 21 are equal, and the widths of the third guide groove 12 and the fourth guide groove 22 are equal. This ensures that the first clamping position and the second clamping position always maintain a dynamically changing rhomboid shape. This design ensures that the constraint on the first shaft 3 when it slides in the first guide groove 11 and the second guide groove 21, and on the second shaft 4 when it slides in the third guide groove 12 and the fourth guide groove 22, is uniform and consistent. The shaft will not experience unnecessary shaking or jamming due to the difference in the width of the guide grooves. This specific shape helps to achieve a more stable and precise clamping function for the first shaft 3 and the second shaft 4, making the relative movement between the inner shell 2 and the outer shell 1 more stable and smooth, and greatly improving the accuracy of the movement.

[0038] like Figure 2 , Figure 4 , Figure 6 , Figure 7 and Figure 12 As shown, in one embodiment, the first included angle a and the third included angle c are equal, and the second included angle b and the fourth included angle d are equal. Thus, a symmetrical and regular mechanical structure relationship is constructed in the first guide structure 8 and the second guide structure 9. This precise angle matching enables the movement trajectory and force state of the two ends of the inner shell to be highly coordinated when they move up and down relative to the outer shell. This effectively avoids unbalanced movement caused by angle differences, reduces abnormal situations such as friction and jamming during movement, significantly improves the stability and smoothness of the overall device movement, and thus enhances the reliability and stability of the device operation.

[0039] It should be noted that in some other embodiments, the widths of the first guide groove 11 and the second guide groove 21 may not be equal, and the widths of the third guide groove 12 and the fourth guide groove 22 may not be equal. The appropriate option can be selected based on actual needs.

[0040] It should be noted that in some other implementations, the first included angle a and the third included angle c may not be equal, and the second included angle b and the fourth included angle d may not be equal. The appropriate option can be selected based on actual needs.

[0041] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, in one embodiment, the outer shell 1 is provided with a groove 13 extending in the vertical direction, and the inner shell 2 is provided with a guide post 23. The guide post 23 and the groove 13 are slidably connected, and the guide post 23 can rotate relative to the groove 13. When the first end or the second end of the inner shell 2 moves up and down relative to the outer shell 1, the guide post 23 provides a support point for the inner shell 2. In this way, the support point can bear part of the weight of the inner shell 2 and various forces generated during the movement, such as inertial force and friction force, to prevent the inner shell 2 from tilting, swaying or falling during the movement, thus ensuring the smoothness of the movement of the inner shell 2 and the stability of the structure. Furthermore, when the inner shell 2 encounters some minor external force interference during the up and down movement or needs to adapt to different working scenarios, it can adjust its own posture by rotating the guide post 23, avoiding movement jamming or structural damage caused by rigid connection, and improving the movement flexibility of the entire device.

[0042] It is understandable that the position on the inner shell 2 between the two actuating blocks 72 needs to be used to install the damping assembly 7 and related components, making it inconvenient to install the guide post 23. To solve the above problem, such as Figure 5 As shown, in one embodiment, the guide post 23 is located outside the two actuating blocks 72 along the length of the inner shell 2, so as to avoid the guide post 23 affecting the installation and operation of the damping assembly 7 and related components.

[0043] Preferably, the guide post 23 can be positioned at 1 / 8 to 1 / 4 of the length of the inner shell 2 to avoid the damping assembly 7 and related components.

[0044] It should be noted that in some other embodiments, the position of the slide groove 13 on the outer shell 1 can be set according to the actual situation. For example, the slide groove 13 can be, but is not limited to, set at a position of 1 / 6, 1 / 7, or 4 / 9 of the length of the outer shell 1.

[0045] like Figure 7As shown, in one embodiment, the pulley assembly further includes a first elastic element 10 and a second elastic element 20. The first elastic element 10 is disposed between the first ends of the outer shell 1 and the inner shell 2, and serves to buffer the relative movement between the first ends of the outer shell 1 and the inner shell 2 and provide an upward elastic force to the first end of the inner shell 2. The second elastic element 20 is disposed between the second ends of the outer shell 1 and the inner shell 2, and serves to buffer the relative movement between the second ends of the outer shell 1 and the inner shell 2 and provide an upward elastic force to the second end of the inner shell 2. Thus, in a first aspect, the buffering effect of the elastic elements helps to maintain the continuity of the relative movement between the inner shell 2 and the outer shell 1. When encountering minor obstacles or changes in movement resistance, the elastic elements can adjust the position and movement state of the inner shell 2 in a timely manner, preventing jamming or jumping. Secondly, the first elastic element 10 and the second elastic element 20 can automatically adjust their relative positions according to the relative movement of the inner shell 2 and the outer shell 1. When one end of the inner shell 2 is subjected to a large external force, the corresponding elastic element will be compressed, while the elastic element at the other end will extend accordingly, thereby maintaining the overall balance and stability of the inner shell 2. This automatic adjustment function enables the device to adapt to different workloads and environmental conditions, improving the adaptability and reliability of the device. Thirdly, certain errors are inevitable in the actual manufacturing and assembly process. The setting of the elastic element can compensate for these errors to a certain extent, ensuring that the relative positional relationship between the inner shell 2 and the outer shell 1 meets the design requirements. For example, if the inner shell 2 is slightly tilted during assembly, the elastic element can adjust the position of the inner shell 2 through elastic deformation, restoring it to a normal state and ensuring the normal operation of the device.

[0046] like Figures 1 to 7 As shown, in one embodiment, the sliding wheel assembly further includes a first pulley 5, which is disposed at the first end of the inner shell 2. The first pulley 5 is slidably connected to the track. When the first pulley 5 is pressed, under the guidance of the first guide structure 8, the first end of the inner shell 2 can move up and down relative to the outer shell 1 to adjust the height position of the first pulley 5. The sliding wheel assembly also includes a second pulley 6, which is disposed at the second end of the inner shell 2. The second pulley 6 is slidably connected to the track. When the second pulley 6 is pressed, under the guidance of the second guide structure 9, the second end of the inner shell 2 can move up and down relative to the outer shell 1 to adjust the height position of the second pulley 6.

[0047] It should be noted that in some other embodiments, the first pulley 5 and the second pulley 6 can also be replaced by other sliding components such as sliders, depending on the actual needs.

[0048] like Figure 1As shown, in one embodiment, when both ends of the inner shell (2) are not under pressure (i.e., when neither the first pulley 5 nor the second pulley 6 is under pressure), the first elastic element 10 and the second elastic element 20 can make the inner shell 2 and the outer shell 1 parallel to each other. Thus, without external force acting on the pulleys, the first elastic element 10 and the second elastic element 20 can ensure that the inner shell 2 and the outer shell 1 are parallel to each other, providing a stable initial structural form for the entire pulley assembly. This stable initial form helps reduce internal stress caused by structural deformation, lowers the risk of fatigue damage due to stress accumulation during long-term use, and extends the service life of the device.

[0049] like Figure 1 , Figure 3 , Figure 5 and Figure 8 As shown, in one embodiment, the actuating block 72 includes a first actuating block 721 and a second actuating block 722, which are respectively connected to the two ends of the damper 71. The first actuating block 721 is closer to the first pulley 5 relative to the second pulley 6, and the highest point of the first actuating block 721 is higher than the highest point of the first pulley 5. The second actuating block 722 is closer to the second pulley 6 relative to the first pulley 5, and the highest point of the second actuating block 722 is higher than the highest point of the second pulley 6. In this way, the stops in the track 30 can be prevented from affecting the sliding of the first pulley 5 and the second pulley 6. Thus, the first pulley 5 and the second pulley 6 can slide stably along the track 30, and the first actuating block 721 and the second actuating block 722 can stably cooperate with the two stops in the track 30 respectively.

[0050] Specifically, such as Figure 9 As shown, the first actuating block 721 is rotatably connected to the first end of the damper 71 via the first rotating shaft 711, and the second actuating block 722 is rotatably connected to the first end of the damper 71 via the second rotating shaft 712. It can be understood that the first actuating block 721 and the second actuating block 722 will rotate between the unhooked position and the hooked position during operation. Due to the presence of the first guide structure 8 and the second guide structure 9, the connection between the first actuating block 721 and the first end of the damper 71 does not need to be provided with a waist-shaped groove, and the connection between the second actuating block 722 and the second end of the damper 71 does not need to be provided with a waist-shaped groove.

[0051] like Figure 8 , Figure 10 and Figure 11As shown, this application embodiment also provides a door and window system, including the sliding wheel assembly as described in any of the above embodiments. The door and window system includes a door body and a track 30. A first stop and a second stop are spaced apart in the track 30 of the door and window system. The outer shell 1 is fixed to the door body. A first actuating block 721 is used to cooperate with the first stop in the track 30. The first actuating block 721 is actuated by the first stop, thereby causing the damper 71 to extend and retract. A second actuating block 722 is used to cooperate with the second stop in the track 30. The second actuating block 722 is actuated by the second stop, thereby causing the damper 71 to extend and retract. The first pulley 5 and the second pulley 6 are used to slide along the track 30.

[0052] When the door moves to the left along track 30, the sliding wheel assembly will move to the left along with the door. When it reaches a certain position, the first actuating block 721 on the sliding wheel assembly will be blocked by the first stop block, so that the first actuating block 721 can no longer move. The sliding wheel assembly and the door will continue to move under the action of inertia. At this time, the damper 71 will have a damping buffering effect, so that the door moves at a certain speed and slowly approaches the left door frame.

[0053] When the door moves to the right along track 30, the sliding wheel assembly will move to the right along with the door. When it reaches a certain position, the second actuating block 722 on the sliding wheel assembly will be blocked by the second stop block on the guide rail, so that the second actuating block 722 can no longer move. The sliding wheel assembly and the door will continue to move under the action of inertia. At this time, the damper 71 will have a damping buffering effect, so that the door moves at a certain speed and slowly approaches the right door frame.

[0054] It should be noted that, Figure 10 The FF reference line in the diagram is a horizontal reference line, and the double-dotted line is the imaginary outline of track 30. Figure 10 The diagram shows the engagement state of the sliding wheel assembly and the track 30 when the track 30 is inclined relative to the horizontal plane and the door body is parallel to the horizontal plane. At this time, the first pulley 5 and the second pulley 6 are both in contact with the guide channel of the track 30 so that they can slide stably along the track 30. The first actuating block 721 and the second actuating block 722 are both at a suitable height so that they can cooperate with the stop block in the track 30.

[0055] It should be noted that, Figure 11 The GG reference line in the diagram is a horizontal reference line, and the double-dotted line is the imaginary outline of track 30. Figure 11 The diagram shows the engagement state of the sliding wheel assembly and the track 30 when the track 30 remains horizontal and the door body is tilted relative to the horizontal plane. At this time, the first pulley 5 and the second pulley 6 are both in contact with the guide channel of the track 30 so that they can slide stably along the track 30. The first actuating block 721 and the second actuating block 722 are both at a suitable height so that they can engage with the stop block in the track 30.

[0056] In summary, the sliding wheel assembly and the door and window system including it disclosed in this utility model can bring at least the following beneficial technical effects: (1) The first shaft 3 is limited to the first clamping position in the shape of a parallelogram, and the second shaft 4 is limited to the second clamping position in the shape of a parallelogram. This can provide precise guidance for the relative movement between the inner shell 2 and the outer shell 1, and provide more accurate and stable motion constraints for the first shaft 3 and the second shaft 4, effectively avoiding problems such as jamming, offset or detachment of the shaft in the guide groove. (2) The first guide structure 8 and the second guide structure 9 integrate the guiding and limiting functions in the fit between the guide groove and the shaft, without the need for additional complex transmission components, ensuring the integrity of the inner shell 2 structure, simplifying the connection between the toggle block 72 and the damper 71, making the overall structure more compact, improving the structural stability and durability of the entire sliding wheel assembly, and reducing the risk of damage caused by structural instability. (3) Both actuating blocks 72 can act on the damper 71 to make the damper 71 extend and retract. The damper 71 can provide buffering when the door moves to the left or right along the track 30. In this way, only one damper 71 can provide bidirectional damping function for the door and window system. The structure is simple and the production cost is low. (4) The positions of the first and second ends of the inner shell 2 relative to the outer shell 1 can be adaptively adjusted, thereby adjusting the height of the two ends of the inner shell 2 and the two toggle blocks 72, thus ensuring that the sliding wheel assembly meets different size requirements and is convenient to use. In addition, it can also ensure that the two toggle blocks 72 can stably cooperate with the two stops in the track 30 when there is an inclination between the door and the track 30. The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A sliding wheel assembly, characterized in that, include: Outer shell (1); The inner shell (2) is used to slide with the track. The inner shell (2) is movably disposed inside the outer shell (1). A first guide structure (8) and a second guide structure (9) are provided between the outer shell (1) and the inner shell (2). The damping assembly (7) includes a damper (71) and two actuating blocks (72), wherein the damper (71) is disposed in the inner shell (2), and the two actuating blocks (72) are respectively disposed at both ends of the damper (71); The first guide structure (8) includes a first shaft (3), a first guide groove (11) and a second guide groove (21). The first guide groove (11) is disposed on the outer shell (1), and the second guide groove (21) is disposed on the first end of the inner shell (2). The first guide groove (11) and the second guide groove (21) intersect each other. The first guide groove (11) forms a first included angle with the length direction of the outer shell (1), and the second guide groove (21) forms a second included angle with the length direction of the inner shell (2). The first included angle and the second included angle are equal, and the first shaft (3) slides simultaneously in the first guide groove (11) and the second guide groove (21). The second guide structure (9) includes a second shaft (4), a third guide groove (12) and a fourth guide groove (22); the third guide groove (12) is disposed on the outer shell (1), and the fourth guide groove (22) is disposed on the second end of the inner shell (2); the third guide groove (12) and the fourth guide groove (22) intersect each other. The third guide groove (12) forms a third included angle with the length direction of the outer shell (1), and the fourth guide groove (22) forms a fourth included angle with the length direction of the inner shell (2). The third included angle and the fourth included angle are equal, and the second shaft (4) slides simultaneously in the third guide groove (12) and the fourth guide groove (22).

2. The sliding wheel assembly according to claim 1, characterized in that, The widths of the first guide groove (11) and the second guide groove (21) are equal, and the widths of the third guide groove (12) and the fourth guide groove (22) are equal.

3. The sliding wheel assembly according to claim 1, characterized in that, The first included angle and the third included angle are equal, and the second included angle and the fourth included angle are equal.

4. The pulley assembly according to any one of claims 1-3, characterized in that, The outer shell (1) is provided with a sliding groove (13) extending in the vertical direction, and the inner shell (2) is provided with a guide post (23). The guide post (23) and the sliding groove (13) are slidably connected. When the first end or the second end of the inner shell (2) moves downward, the guide post (23) provides a support point for the inner shell (2).

5. The sliding wheel assembly according to claim 4, characterized in that, Along the length of the inner shell (2), the guide post (23) is located outside the two actuating blocks (72).

6. The sliding wheel assembly according to claim 1, characterized in that, The sliding wheel assembly further includes a first elastic element (10) and a second elastic element (20); the first elastic element (10) is disposed between the outer shell (1) and the inner shell (2) at a first end, and the first elastic element (10) is used to provide an upward elastic force to the first end of the inner shell (2); the second elastic element (20) is disposed between the outer shell (1) and the inner shell (2) at a second end, and the second elastic element (20) is used to provide an upward elastic force to the second end of the inner shell (2).

7. The sliding wheel assembly according to claim 6, characterized in that, When both ends of the inner shell (2) are not under pressure, the first elastic element (10) and the second elastic element (20) can make the inner shell (2) and the outer shell (1) parallel to each other.

8. The sliding wheel assembly according to claim 1, characterized in that, The sliding wheel assembly further includes a first pulley (5), which is disposed at the first end of the inner shell (2). When the first pulley (5) is pressed, under the guidance of the first guide structure (8), the first end of the inner shell (2) can move up and down relative to the outer shell (1); and / or, The sliding wheel assembly also includes a second pulley (6), which is disposed at the second end of the inner shell (2). When the second pulley (6) is pressed, under the guidance of the second guide structure (9), the second end of the inner shell (2) can move up and down relative to the outer shell (1).

9. The sliding wheel assembly according to claim 8, characterized in that, The actuating block (72) includes a first actuating block (721) and a second actuating block (722), and the first actuating block (721) and the second actuating block (722) are respectively connected to the two ends of the damper (71); The first actuating block (721) is closer to the first pulley (5) relative to the second pulley (6), and the highest point of the first actuating block (721) is higher than the highest point of the first pulley (5); The second actuating block (722) is closer to the second pulley (6) relative to the first pulley (5), and the highest point of the second actuating block (722) is higher than the highest point of the second pulley (6).

10. A door and window system, characterized in that, Includes the pulley assembly as described in any one of claims 1-9.

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