Sliding pulley assembly and door / window system comprising same

Abstract

Disclosed in the present application are a sliding pulley assembly and a door / window system comprising same. The sliding pulley assembly comprises: an outer housing; a first inner housing which is vertically movably connected to the outer housing; a second inner housing which is vertically movably connected to the outer housing; a first pulley which is arranged at the first inner housing; a second pulley which is arranged at the second inner housing, the first pulley and the second pulley being configured to slide along a track; and a damping assembly which comprises a first shifting block, a second shifting block and a damping tube, wherein the first shifting block and the second shifting block are rotatably connected to two ends of the damping tube, respectively, the first shifting block is slidably connected to the first inner housing, and the second shifting block is slidably connected to the second inner housing.

Description

Sliding wheel assembly and door and window system comprising the same TECHNICAL FIELD

[0001] The present application relates to the technical field of door and window hardware, in particular to a sliding wheel assembly and a door and window system comprising the same. BACKGROUND

[0002] In the prior art, in order to simplify the overall structure, there is a sliding wheel assembly that combines a damper and a pulley together. The sliding wheel assembly is installed on a door body and can provide a guiding function and a damping function to the door body at the same time. The sliding wheel assembly comprises a pulley and a push block. However, the height of the pulley and the push block is difficult to adjust, and it is difficult to adapt to different sizes of door and window systems. During the movement of the door body, the pulley may jump in the track or the push block may not cooperate with the stop block on the track.

[0003] In order to solve the above problems, a single-wheel sliding wheel assembly with a damper is disclosed in Chinese Patent No. CN204343864U. The single-wheel sliding wheel assembly comprises an inner clamp, a clamp seat and an outer clamp from inside to outside. The inner clamp is assembled with a damper assembly. The damper assembly comprises a fixed seat, a damper and a tension spring. The radial through slot of the fixed seat is assembled with a damper push block. The damper push block extends out of the lower end of the inner clamp. The damper push block is provided with a "7" shaped fixed hook. The clamp seat is provided with a pair of sliding wheel assembly holes. A pair of sliding wheels are assembled in the sliding wheel assembly holes. The outer clamp is provided with two or more pairs of parallel waist-shaped holes. The clamp seat is provided with two or more pairs of pin hole corresponding to the waist-shaped holes. The inner clamp is provided with two or more pairs of pin holes corresponding to the waist-shaped holes. The movable rivet passes through the waist-shaped holes of the outer clamp, the pin holes of the clamp seat and the pin holes of the inner clamp to connect the outer clamp, the clamp seat and the inner clamp into one body. The single-wheel sliding wheel assembly is easy to install and adjust, can realize synchronous damping, has good damping effect, ensures the stability of the door page operation and can avoid shaking or jumping phenomenon.

[0004] Since the door body needs to move left and right along the track frequently, in order to keep the door body stable and noiseless during the movement to the left and right, it is necessary to provide the single-wheel sliding wheel assembly on the left and right sides of the door body to realize the bidirectional damping function. This increases the complexity and manufacturing cost of the overall door and window system. In order to solve this problem, the technical personnel in the field have tried to improve the single-wheel sliding wheel assembly. A sliding wheel is arranged at each end of the clamp seat, and a push block is arranged at each end of the damper to cooperate with the two stop blocks of the track respectively. However, if the door body and the track are inclined during the movement of the door body along the track, the sliding wheel at one end of the clamp seat is prone to jumping. The push block at one end of the damper will be difficult to cooperate with the stop block or the hook on the track, and it is difficult to provide stable bidirectional damping effect. Even the damper may be damaged or broken.

[0005] SUMMARY

[0006] In order to overcome at least one of the defects of the prior art described above, the present application provides a sliding wheel assembly and a door and window system comprising the same, which can achieve a bidirectional damping function through a single damping pipe, has an adjusting function to adapt to door and window systems of different sizes and installation conditions, and can still maintain stable bidirectional damping effect when an inclination occurs between a door body and a track.

[0007] The technical solution adopted by the present application to solve the problems is as follows:

[0008] The sliding wheel assembly comprises: an outer shell; a first inner shell movably connected to the outer shell in an up-down direction; a second inner shell movably connected to the outer shell in an up-down direction; a first pulley arranged in the first inner shell; a second pulley arranged in the second inner shell, the first pulley and the second pulley being used for sliding along a track; and a damping assembly comprising a first shifting block, a second shifting block, and a damping pipe, the first shifting block and the second shifting block being rotatably connected to two ends of the damping pipe respectively, and the first shifting block being slidably connected to the first inner shell, and the second shifting block being slidably connected to the second inner shell.

[0009] According to some embodiments of the present application, one of the first shifting block and the damping pipe is provided with a first waist-shaped groove, and the other is provided with a first shaft body, the first shaft body being rotatably connected to the first waist-shaped groove; the first shifting block is rotatably connected to the first connecting end of the damping pipe through cooperation of the first waist-shaped groove and the first shaft body.

[0010] According to some embodiments of the present application, one of the second shifting block and the damping pipe is provided with a second waist-shaped groove, and the other is provided with a second shaft body, the second shaft body being rotatably connected to the second waist-shaped groove; the second shifting block is rotatably connected to the second connecting end of the damping pipe through cooperation of the second waist-shaped groove and the second shaft body.

[0011] According to some embodiments of the present application, one of the outer shell and the first inner shell is provided with a first guide groove, and the other is provided with a first guide column, the first guide column being slidably connected in the first guide groove, and the first inner shell being movable in an up-down direction along an extension direction of the first guide groove.

[0012] According to some embodiments of the present application, one of the outer shell and the second inner shell is provided with a second guide groove, and the other is provided with a second guide column, the second guide column being slidably connected in the second guide groove, and the second inner shell being movable in an up-down direction along an extension direction of the second guide groove.

[0013] According to some embodiments of the present application, the first guide slot and the second guide slot are both inclined to the horizontal plane, and the first guide slot and the second guide slot have the same extension direction.

[0014] According to some embodiments of the present application, the highest point of the first dialing block is higher than the highest point of the first pulley, and the highest point of the second dialing block is higher than the highest point of the second pulley.

[0015] According to some embodiments of the present application, the first inner shell has a first end portion, and the second inner shell has a second end portion, the first end portion and the second end portion are opposite to each other; when the first inner shell and the second inner shell are in the initial position, an adjustment interval allowing the relative movement of the first inner shell and the second inner shell is formed between the first end portion and the second end portion.

[0016] According to some embodiments of the present application, the adjustment interval comprises a first interval, a second interval and a third interval which are sequentially connected, the first interval and the third interval extend vertically, the second interval extends horizontally, and the first interval and the third interval are respectively located on the upper and lower sides of the second interval.

[0017] According to some embodiments of the present application, the first guide slot is provided with at least two, the first guide column is provided with at least two, and the first guide column and the first guide slot are one-to-one slidingly connected.

[0018] According to some embodiments of the present application, the second guide slot is provided with at least two, the second guide column is provided with at least two, and the second guide column and the second guide slot are one-to-one slidingly connected.

[0019] According to some embodiments of the present application, the sliding wheel assembly further comprises a resilient member; the resilient member is arranged between the outer shell and the first inner shell, and is used to provide buffering for the relative movement between the first inner shell and the outer shell; and / or the resilient member is arranged between the outer shell and the second inner shell, and is used to provide buffering for the relative movement between the second inner shell and the outer shell.

[0020] According to some embodiments of the present application, the sliding wheel assembly further comprises a guide wheel, which is rotationally connected to the first inner shell and / or the second inner shell.

[0021] In addition, the present application also provides a door and window system, which comprises the sliding wheel assembly as described above, and further comprises a door body, and the outer shell is connected to the door body.

[0022] In summary, the sliding wheel assembly and the door and window system comprising the same provided by the present application have at least the following technical effects:

[0023] On the one hand, the first and second toggle blocks can act on the damping tube to make the damping tube extend and retract, and the damping tube can provide buffering during movement of the door body to the left or to the right along the track, so that only one damping tube can provide a bidirectional damping function for the door and window system, the structure is simple, and the production cost is low. On the other hand, the first and second inner shells can move up and down relative to the outer shell, so that the relative positions of the first inner shell and the outer shell and the relative positions of the second inner shell and the outer shell can be adjusted, thereby the height positions of the first and second toggle blocks, the first and second pulleys can be adjusted, and then it can be ensured that the sliding wheel assembly meets different size requirements, facilitates application, and also can ensure that the first and second toggle blocks can stably cooperate with the stop blocks in the track when an inclination occurs between the door body and the track, and ensure that the first and second pulleys stably slide along the track. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 is a structural schematic diagram of a sliding wheel assembly (the first and second inner shells are in an initial position) of an embodiment of the present application;

[0025] Fig. 2 is a partial enlarged view of part A in Fig. 1;

[0026] Fig. 3 is a structural schematic diagram of a sliding wheel assembly (the first inner shell moves downward relative to the outer shell) of an embodiment of the present application;

[0027] Fig. 4 is a structural schematic diagram of a sliding wheel assembly (the second inner shell moves downward relative to the outer shell) of an embodiment of the present application;

[0028] Fig. 5 is a structural schematic diagram of a damping assembly of an embodiment of the present application;

[0029] Fig. 6 is a partial enlarged view of part B in Fig. 5;

[0030] Fig. 7 is a partial enlarged view of part C in Fig. 5;

[0031] Fig. 8 is a schematic diagram of a cooperation state of a sliding wheel assembly and a track of an embodiment of the present application;

[0032] Fig. 9 is a schematic diagram of a cooperation state of a sliding wheel assembly and a track (when the track is inclined to the horizontal plane) of an embodiment of the present application;

[0033] Fig. 10 is a schematic diagram of a cooperation state of a sliding wheel assembly, a track and a door body (when the track is parallel to the horizontal plane and the door body is inclined to the horizontal plane) of an embodiment of the present application.

[0034] Wherein, the reference signs mean as follows: 1, shell; 11, first guide groove; 12, second guide groove; 2, first inner shell; 21, first guide column; 22, first end part; 23, first extension block; 24, first sliding groove; 3, second inner shell; 31, second guide column; 32, second end part; 33, second extension block; 34, second sliding groove; 4, damping assembly; 41, first toggle block; 411, first waist-shaped groove; 412, first sliding block; 42, second toggle block; 421, second waist-shaped groove; 422, second sliding block; 43, damping tube; 431, tube body; 432, telescopic rod; 433, first connecting head; 434, second connecting head; 435, first shaft body; 436, second shaft body; 5, adjustment interval; 51, first interval; 52, second interval; 53, third interval; 6, first pulley; 7, second pulley; 8, track; 9, door body. DETAILED DESCRIPTION

[0035] In order to better understand and implement, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application.

[0036] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments of the present application and are not intended to limit the present application.

[0038] The present application will be described in further detail below in combination with the drawings, and it should be noted that the solid lines in FIG. 1, FIG. 3 and FIG. 4 represent visible contour lines, and the dashed lines represent invisible contour lines.

[0039] Please refer to FIG. 1 to FIG. 5, the embodiment discloses a sliding wheel assembly, the sliding wheel assembly includes a shell 1, a first inner shell 2, a second inner shell 3, a damping assembly 4, a first pulley 6 and a second pulley 7;The first inner shell 2 is movably connected to the shell 1, and the second inner shell 3 is movably connected to the shell 1;The first pulley 6 is rotatably arranged in the first inner shell 2, and the second pulley 7 is rotatably arranged in the second inner shell 3;The damping assembly 4 includes a first driving block 41, a second driving block 42 and a damping pipe 43, the first driving block 41 and the second driving block 42 are rotatably connected to both ends of the damping pipe 43 respectively, and the first driving block 41 is slidably connected to the first inner shell 2, and the second driving block 42 is slidably connected to the second inner shell 3.

[0040] Specifically, the door and window system includes a door body and a track, the track of the door and window system is provided with a first stopper and a second stopper at intervals, the shell 1 is used for being fixed on the door body, the first driving block 41 is used for cooperating with the first stopper in the track, the first driving block 41 is acted on by the first stopper so that the damping pipe 43 is expanded and contracted, the second driving block 42 is used for cooperating with the second stopper in the track, the second driving block 42 is acted on by the second stopper so that the damping pipe 43 is expanded and contracted, and the first pulley 6 and the second pulley 7 are used for sliding along the track.

[0041] When the door body moves along the track to the left, the sliding wheel assembly will move to the left along with the door body, and when moving to a certain position, the first driving block 41 on the sliding wheel assembly will be blocked by the first stopper, so that the first driving block 41 cannot continue to move, and the sliding wheel assembly and the door body continue to move under the action of inertia, at this time, the damping pipe 43 has a damping buffering effect, so that the moving speed of the door body is not too fast, and the door body slowly approaches the left door frame.

[0042] When the door body moves along the track to the right, the sliding wheel assembly will move to the right along with the door body, and when moving to a certain position, the second driving block 42 on the sliding wheel assembly will be blocked by the second stopper on the guide rail, so that the second driving block 42 cannot continue to move, and the sliding wheel assembly and the door body continue to move under the action of inertia, at this time, the damping pipe 43 has a damping buffering effect, so that the moving speed of the door body is not too fast, and the door body slowly approaches the right door frame.

[0043] The sliding wheel assembly disclosed in the embodiment can provide damping in the process of moving the door body leftward or rightward along the track, so that only one damping tube 43 can provide bidirectional damping function for the door and window system, and the structure is simple and the production cost is low. On the other hand, as shown in FIGS. 8, 9 and 10, the first inner shell 2 and the second inner shell 3 can move up and down relative to the outer shell 1, so that the relative positions of the first inner shell 2 and the outer shell 1 and the relative positions of the second inner shell 3 and the outer shell 1 can be adjusted, thereby adjusting the height positions of the first push block 41, the second push block 42, the first pulley 6 and the second pulley 7, and further ensuring that the sliding wheel assembly meets different size requirements, facilitates application, and also ensures that the first push block 41 and the second push block 42 can stably cooperate with the stop block in the track when the door body and the track are inclined, and ensures that the first pulley 6 and the second pulley 7 stably slide along the track 8.

[0044] It should be noted that the D-D reference line in FIG. 9 is a horizontal reference line, and the double-dot dashed line is an imaginary contour line. FIG. 9 shows the cooperation state of the damper and the track 8 when the track 8 is inclined relative to the horizontal plane. At this time, the first pulley 6 and the second pulley 7 are kept adhered to the guide channel of the track so as to stably slide along the track 8, and the first push block 41 and the second push block 42 are at appropriate heights so as to cooperate with the stop block in the track.

[0045] It should be noted that the E-E reference line in FIG. 10 is a horizontal reference line, and the double-dot dashed line is an imaginary contour line. FIG. 10 shows the cooperation state of the damper, the track 8 and the door body 9 when the track is kept horizontal and the door body 9 is inclined relative to the horizontal plane. At this time, the first pulley 6 and the second pulley 7 are kept adhered to the guide channel of the track so as to stably slide along the track 8, and the first push block 41 and the second push block 42 are at appropriate heights so as to cooperate with the stop block in the track.

[0046] As shown in FIGS. 1 and 3, specifically, in the embodiment, when the first push block 41 slides to the first release position relative to the first inner shell 2, the first push block 41 can rotate relative to the first inner shell 2; when the second push block 42 slides to the second release position relative to the second inner shell 3, the second push block 42 can rotate relative to the second inner shell 3.

[0047] As shown in FIG. 1 and FIG. 3, in some embodiments, the sidewall of the first inner shell 2 is provided with a first sliding groove 24, the first knob 41 is provided with a first sliding block 412, and the first knob 41 is slidingly connected to the first sliding groove 24 through the first sliding block 412. More specifically, the first sliding groove 24 comprises a first horizontal groove and a first inclined groove connected to the first horizontal groove. Specifically, in the present embodiment, the first sliding block 412 can move relative to the first horizontal groove and the first inclined groove in sequence. More specifically, when the first knob 41 moves relative to the intersection between the first horizontal groove and the first inclined groove (i.e. the first release position mentioned above), the first knob 41 can rotate along the first inclined groove relative to the first connecting end of the damping pipe 43, at which time the first knob 41 can be disengaged from the first stop block.

[0048] As shown in FIG. 1 and FIG. 3, in some embodiments, the sidewall of the second inner shell 3 is provided with a second sliding groove 34, the second knob 42 is provided with a second sliding block 422, and the second knob 42 is slidingly connected to the second sliding groove 34 through the second sliding block 422. More specifically, the second sliding groove 34 comprises a second horizontal groove and a second inclined groove connected to the second horizontal groove. Specifically, in the present embodiment, the second sliding block 422 can move relative to the second horizontal groove and the second inclined groove in sequence. More specifically, when the second knob 42 moves relative to the intersection between the second horizontal groove and the second inclined groove (i.e. the second release position mentioned above), the second knob 42 can rotate along the second inclined groove relative to the second connecting end of the damping pipe 43, at which time the second knob 42 can be disengaged from the second stop block.

[0049] More specifically, in the present embodiment, the first inclined groove and the second inclined groove are both arc-shaped.

[0050] As shown in FIG. 5 and FIG. 6, in some embodiments, in order to avoid the rotation of the first knob 41 being affected by the up-and-down movement of the first inner shell 2 relative to the outer shell 1, the first knob 41 is provided with a first waist-shaped groove 411, the first connecting end of the damping pipe 43 is provided with a first shaft body 435, and the first knob 41 is rotatably connected to the first shaft body 435 through the cooperation of the first waist-shaped groove 411 and the first shaft body 435. In this way, when the first knob 41 moves relative to the first inner shell 2 to the first release position, the first knob 41 will not be stuck, and the first knob 41 can rotate along the first inclined groove relative to the first connecting end of the damping pipe 43 more smoothly.

[0051] As shown in FIG. 5 and FIG. 7, in some embodiments, in order to avoid the rotation of the second toggle block 42 being affected by the up-and-down movement of the second inner shell 3 relative to the outer shell 1, the second toggle block 42 is provided with a second waist-shaped slot 421, the second connecting end of the damping tube 43 is provided with a second shaft body 436, and the second toggle block 42 is rotationally connected to the second shaft body 436 through the second waist-shaped slot 421. In this way, when the second toggle block 42 moves to the second release position relative to the second inner shell 3, it will not be stuck, and the second toggle block 42 can rotate more smoothly along the second inclined slot relative to the second connecting end of the damping tube 43.

[0052] It should be noted that, in some embodiments, the first waist-shaped slot 411 can also be arranged at the first connecting end of the damping tube 43, the first shaft body 435 can be arranged at the first toggle block 41, and the second waist-shaped slot 421 can also be arranged at the second connecting end of the damping tube 43, and the second shaft body 436 can be arranged at the second toggle block 42, which can be selected according to actual needs.

[0053] It should be noted that, in some embodiments, the first waist-shaped slot 411 can also be arranged at the first connecting end of the damping tube 43, the first shaft body 435 can be arranged at the first toggle block 41, and the second waist-shaped slot 421 can also be arranged at the second connecting end of the damping tube 43, and the second shaft body 436 can be arranged at the second toggle block 42, which can be selected according to actual needs.

[0054] As shown in FIG. 1, FIG. 3 and FIG. 4, in some embodiments, the outer shell 1 is provided with a first guide slot 11 and a second guide slot 12, both of which are inclined to the horizontal plane, the first inner shell 2 is provided with a first guide column 21, and the second inner shell 3 is provided with a second guide column 31; the first guide column 21 is slidingly connected in the first guide slot 11, and the first inner shell 2 can move up and down along the extension direction of the first guide slot 11; the second guide column 31 is slidingly connected in the second guide slot 12, and the second inner shell 3 can move up and down along the extension direction of the second guide slot 12; in this way, the cooperation of the first guide column 21 and the first guide slot 11 provides guidance for the up-and-down movement of the first inner shell 2 relative to the outer shell 1, and the cooperation of the second guide column 31 and the second guide slot 12 provides guidance for the up-and-down movement of the second inner shell 3 relative to the outer shell 1; both the first inner shell 2 and the second inner shell 3 move along a direction inclined to the horizontal plane, which is more gentle and less likely to jump than moving along a direction perpendicular to the horizontal plane.

[0055] As shown in FIG. 1, FIG. 3 and FIG. 4, in some embodiments, two first guide grooves 11 are provided, two first guide columns 21 are provided, the two first guide columns 21 and the two first guide grooves 11 are in one-to-one sliding connection, two second guide grooves 12 are provided, two second guide columns 31 are provided, the two second guide columns 31 and the two second guide grooves 12 are in one-to-one sliding connection, so as to further reduce the shaking when the first inner shell 2 and the second inner shell 3 move relative to the outer shell 1, so as to further smooth the movement of the first inner shell 2 and the second inner shell 3 relative to the outer shell 1.

[0056] It should be noted that, in some embodiments, the number of the first guide grooves 11 can be, but is not limited to, 1 or 3 or 4, etc., the number of the second guide grooves 12 can be, but is not limited to, 1 or 3 or 4, etc., the number of the first guide columns 21 can correspond to the number of the first guide grooves 11, and the number of the second guide columns 31 can correspond to the number of the second guide grooves 12, which are not limited herein.

[0057] More preferably, in the present embodiment, the first guide grooves 11 and the second guide grooves 12 extend in the same direction, so as to further avoid the movement of the first inner shell 2 hindering the movement of the second inner shell 3, and further avoid the movement of the second inner shell 3 hindering the movement of the first inner shell 2, so as to make the position adjustment of the first inner shell 2 and the second inner shell 3 more convenient and smooth.

[0058] It should be noted that, in some embodiments, the first guide grooves 11 can be arranged on the first inner shell 2, the second guide grooves 12 can be arranged on the second inner shell 3, and the first guide columns 21 and the second guide columns 31 can be arranged on the outer shell 1 correspondingly, which can be selected according to actual needs.

[0059] As shown in FIG. 1 and FIG. 2, further, in the present embodiment, the first inner shell 2 has a first end portion 22, the second inner shell 3 has a second end portion 32, and the first end portion 22 and the second end portion 32 are opposite to each other; when the first inner shell 2 and the second inner shell 3 are in an initial position, an adjustment interval 5 allowing the relative movement of the first inner shell 2 and the second inner shell 3 is formed between the first end portion 22 and the second end portion 32, so as to avoid the problem of collision and interference between the first inner shell 2 and the second inner shell 3 when the first inner shell 2 and the second inner shell 3 move up and down relative to the outer shell 1.

[0060] As shown in FIG. 2, in some embodiments, the adjustment interval 5 includes a first interval 51, a second interval 52 and a third interval 53 which are sequentially communicated, the first interval 51 and the third interval 53 extend vertically, the second interval 52 extends horizontally, and the first interval 51 and the third interval 53 are respectively located on the upper and lower sides of the second interval 52, so as to provide sufficient avoiding space for the relative movement of the first inner shell 2 and the second inner shell 3.

[0061] As shown in FIG. 2, specifically, in the present embodiment, the first end portion 22 is provided with a first extension block 23, and the second end portion 32 is provided with a second extension block 33; as shown in FIG. 2 and FIG. 3, when the first inner shell 2 moves downward relative to the outer shell 1, the second extension block 33 can abut against the first end portion 22; as shown in FIG. 2 and FIG. 4, when the second inner shell 3 moves downward relative to the outer shell 1, the first extension block 23 can abut against the second extension block 33.

[0062] In some embodiments, as shown in FIG. 8, FIG. 9 and FIG. 10, the highest point of the first push block 41 is higher than the highest point of the first pulley 6, and the highest point of the second push block 42 is higher than the highest point of the second pulley 7, thus, the first stop block and the second stop block in the track 8 can not affect the sliding of the first pulley 6 and the second pulley 7, and the first pulley 6 and the second pulley 7 can stably slide along the track 8, and the first push block 41 and the second push block 42 can stably cooperate with the stop blocks in the track.

[0063] In some embodiments, the sliding wheel assembly further comprises a resilient member (not shown in the drawings) arranged between the outer shell 1 and the first inner shell 2 and arranged between the outer shell 1 and the second inner shell 3, which is used to provide buffering for the relative movement between the first inner shell 2 and the outer shell 1 and for the relative movement between the second inner shell 3 and the outer shell 1. Specifically, when the first inner shell 2 moves downward under pressure, the resilient member deforms to generate an elastic force to offset the external pressure, thereby achieving buffering between the first inner shell 2 and the outer shell 1, and when the second inner shell 3 moves downward under pressure, the resilient member deforms to generate an elastic force to offset the external pressure, thereby achieving buffering between the second inner shell 3 and the outer shell 1.

[0064] It can be understood that when there is an obstacle in the moving track of the guide wheel 6, the first inner shell 2 and the outer shell 1 or the second inner shell 3 and the outer shell 1 can be allowed to move a small range relative to each other by the resilient member, so as to ensure that the guide wheel 6 can pass over the obstacle, thus, the strong collision between the guide wheel 6 and the obstacle can be effectively avoided, the damage of the obstacle to the guide wheel 6 is reduced, and the service life of the guide wheel 6 is improved.

[0065] In some embodiments, the resilient member is a torsion spring. In some embodiments, the resilient member can also be, but is not limited to, a compression spring or elastic rubber, etc., which can be selected according to actual needs.

[0066] It should be noted that in some embodiments, the resilient member can also be arranged only between the first inner shell 2 and the outer shell 1 or only between the second inner shell 3 and the outer shell 1, which can be selected according to actual needs.

[0067] It should be noted that in some embodiments, the guide wheels 6 can be arranged only in the first inner shell 2 or only in the second inner shell 3, which can be selected according to actual needs.

[0068] As shown in FIGS. 1, 5, 6 and 7, specifically, in the present embodiment, the damping tube 43 comprises a tube body 431, a telescopic rod 432, a first connecting head 433 and a second connecting head 434, the telescopic rod 432 is telescopically arranged in the tube body 431, the first connecting head 433 is connected to one end of the tube body 431, and the second connecting head 434 is connected to one end of the telescopic rod 432, the first connecting end of the damping tube 43 is located at the first connecting head 433, the second connecting end of the damping tube 43 is located at the second connecting head 434, a first shaft body 435 is arranged in the first connecting head 433, and a second shaft body 436 is arranged in the second connecting head 434.

[0069] In addition, the present embodiment further provides a door and window system comprising the sliding wheel assembly as described above, and further comprising a door body, wherein the outer shell 1 is connected to the door body, and the door and window system has all the advantages of the sliding wheel assembly as described above, which will not be described herein again.

[0070] In summary, the sliding wheel assembly and the door and window system comprising the same disclosed in the present application can at least bring the following beneficial technical effects:

[0071] 1) The height positions of the first and second knobs 41 and 42 and the first and second pulleys 6 and 7 can be adjusted, thereby ensuring that the sliding wheel assembly meets different size requirements and is convenient to use;

[0072] 2) The first and second knobs 41 and 42 can be ensured to stably cooperate with the stop blocks in the track when the door body and the track are inclined, and the first and second pulleys 6 and 7 can be ensured to stably slide along the track;

[0073] 3) The cooperation of the first waist-shaped groove 411 and the first shaft body 435 and the cooperation of the second waist-shaped groove 421 and the second shaft body 436 can avoid the problem that the first and second knobs 41 and 42 are stuck due to the up and down movement of the first and second inner shells 2 and 3;

[0074] 4) The arrangement of the adjusting interval 5 can allow the relative movement between the first and second inner shells 2 and 3, thereby avoiding the collision and interference between the first and second inner shells 2 and 3.

[0075] The technical means disclosed in the application scheme are not limited to the technical means disclosed in the above-mentioned embodiments, and include technical solutions composed of any combination of the above technical features. It should be noted that, for ordinary skilled persons in the art, without departing from the principles of the application, several improvements and refinements can be made, which are also considered within the protection scope of the application.

Claims

1. A sliding wheel assembly, comprising: a housing (1) ; a first inner housing (2) movably connected to the housing (1) in a vertical direction; a second inner housing (3) movably connected to the housing (1) in the vertical direction; a first pulley (6) arranged in the first inner housing (2) ; a second pulley (7) arranged in the second inner housing (3), the first pulley (6) and the second pulley (7) being used for sliding along a track; a damping assembly (4) comprising a first knob (41), a second knob (42) and a damping tube (43), the first knob (41) and the second knob (42) being rotatably connected to two ends of the damping tube (43) respectively, the first knob (41) being slidably connected to the first inner housing (2), and the second knob (42) being slidably connected to the second inner housing (3).

2. The sliding wheel assembly of claim 1, wherein, One of the first knob (41) and the damping tube (43) is provided with a first waist-shaped groove (411), and the other is provided with a first shaft body (435), the first shaft body (435) being rotatably connected to the first waist-shaped groove (411) ; the first knob (41) is rotatably connected to the first connecting end of the damping tube (43) through cooperation of the first waist-shaped groove (411) and the first shaft body (435).

3. The sliding wheel assembly of claim 2, wherein, One of the second knob (42) and the damping tube (43) is provided with a second waist-shaped groove (421), and the other is provided with a second shaft body (436), the second shaft body (436) being rotatably connected to the second waist-shaped groove (421) ; the second knob (42) is rotatably connected to the second connecting end of the damping tube (43) through cooperation of the second waist-shaped groove (421) and the second shaft body (436).

4. The sliding wheel assembly of claim 1, wherein, One of the housing (1) and the first inner housing (2) is provided with a first guide groove (11), and the other is provided with a first guide column (21), the first guide column (21) being slidably connected in the first guide groove (11) ; the first inner housing (2) can move up and down along the extension direction of the first guide groove (11) ; One of the housing (1) and the second inner housing (3) is provided with a second guide groove (12), and the other is provided with a second guide column (31), the second guide column (31) being slidably connected in the second guide groove (12) ; the second inner housing (3) can move up and down along the extension direction of the second guide groove (12).

5. The sliding wheel assembly of claim 4, wherein, The first guide groove (11) and the second guide groove (12) are both inclined to the horizontal plane, and the extension directions of the first guide groove (11) and the second guide groove (12) are the same.

6. The sliding wheel assembly of claim 1, wherein, The highest point of the first knob (41) is higher than the highest point of the first pulley (6), and the highest point of the second knob (42) is higher than the highest point of the second pulley (7).

7. The sliding wheel assembly of any one of claims 1-6, wherein, The first inner shell (2) has a first end (22), and the second inner shell (3) has a second end (32), the first end (22) and the second end (32) being opposite; when the first inner shell (2) and the second inner shell (3) are in an initial position, an adjustment interval (5) allowing the first inner shell (2) and the second inner shell (3) to move relative to each other is formed between the first end (22) and the second end (32).

8. The sliding wheel assembly of claim 7, wherein, The adjustment interval (5) comprises a first interval (51), a second interval (52) and a third interval (53) connected in sequence, the first interval (51) and the third interval (53) extending vertically, and the second interval (52) extending horizontally, the first interval (51) and the third interval (53) being respectively located on the upper and lower sides of the second interval (52).

9. The sliding wheel assembly according to any one of claims 1-8, further comprising an elastic member; the elastic member is arranged between the outer shell (1) and the first inner shell (2), and is used to provide buffering for the relative movement between the first inner shell (2) and the outer shell (1); or the elastic member is arranged between the outer shell (1) and the second inner shell (3), and is used to provide buffering for the relative movement between the second inner shell (3) and the outer shell (1).

10. A door and window system comprising the sliding wheel assembly according to any one of claims 1-9, and further comprising a door body, the outer shell (1) being connected to the door body.

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