Adjustable pulley device and door and window

Abstract

The invention relates to the technical field of door and window accessories, in particular to an adjustable pulley device and a door and window. The adjustable pulley device comprises a long-strip-shaped frame, at least one pulley module is arranged in the frame in the length direction, a sliding block and a limiting block are arranged at the two ends of the frame correspondingly, the sliding block can slide relative to the frame, and an adjusting piece is arranged at one end of the frame and connected with the sliding block; each pulley module comprises a supporting frame connected with the frame in a sliding mode, the two opposite sides, in the length direction of the frame, of each supporting frame are provided with guide slopes correspondingly, and when the number of the pulley modules is two or more, third guide pieces are arranged between the adjacent pulley modules and make linear contact with the guide slopes on the two sides correspondingly. And is in line contact with the bottom of the frame. By the adoption of the mode, the height of the pulley module can be adjusted after the door and window are installed in the frame body, so that the matching degree of the pulley module and a sliding rail at the frame body is improved, and the using smoothness and safety are improved.

Description

Technical Field

[0001] The invention relates to the technical field of door and window accessories, in particular to an adjustable pulley device and a door and window. Background Art

[0002] Sliding doors and windows are widely used in the home furnishing field because they are flexible to open and occupy little space. The pulley device is fixed at the bottom of the leaf of the sliding door and window, and cooperates with the lower guide rail in the door frame or window frame to ensure the opening and closing of the sliding door and window.

[0003] As the running and load-bearing parts of sliding doors, the pulley device determines the stability and safety of sliding doors and windows. During the installation of doors and windows, in order to facilitate the loading of doors and windows, there is usually a certain margin between the doors and windows and the frame. If it is too loose during use, it is easy to cause uneven force on the pulley device and poor operation, or even derailment of the pulley device, increasing safety hazards.

[0004] In response to the above problems, the pulley device is currently set to an adjustable form to achieve better adaptation between the pulley device and the doors and windows. However, when adjusting the pulley device, the pulley device is usually adjusted in the form of surface contact, which makes the friction force high during adjustment, and when dust enters, it is easy to get stuck, resulting in adjustment failure, resulting in poor stability. Summary of the invention

[0005] The technical problem to be solved by the embodiments of the present invention is to provide an adjustable pulley device, which can adjust the height of the pulley module after the doors and windows are installed in the frame, so as to improve the coordination with the slide rails at the frame and improve the smoothness and stability of the adjustment during use.

[0006] The invention discloses an adjustable pulley device, comprising: a frame arranged in a long strip shape, at least one pulley module is arranged in the frame along the length direction, a slider and a limit block are respectively arranged at two ends of the frame, and the slider can slide relative to the frame, and an adjusting member is arranged at one end of the frame, and the adjusting member is connected to the slider; the pulley module comprises a support frame slidably connected to the frame, and the support frame is respectively provided with guide inclined surfaces on two opposite sides along the length direction of the frame; when the pulley module is set to one, a first guide member is arranged between the slider and the pulley module, and a second guide member is arranged between the limit block and the pulley module, and the first guide member and the second guide member are respectively in line contact with the corresponding guide inclined surfaces; when the pulley module is set to two or more, a third guide member is further arranged between adjacent pulley modules, and the third guide member is respectively in line contact with the guide inclined surfaces on both sides and in line contact with the bottom of the frame; when the adjusting member drives the slider to slide relative to the frame, the pulley module can protrude or retract a partial distance of the frame.

[0007] Optionally, the slider includes a first guide slot corresponding to the pulley module, a first guide member is provided between the slider and the adjacent pulley module, and the first guide member is abutted between the first guide slot and the guide inclined surface.

[0008] Optionally, the slider includes a threaded hole corresponding to the adjusting member, and the adjusting member is connected to the slider through the threaded hole.

[0009] Optionally, a second guide slot corresponding to the pulley module is provided on the limit block, a second guide member is provided between the limit block and the adjacent pulley module, and the second guide member is supported between the second guide slot and the guide inclined surface.

[0010] Optionally, the third guide member, the first guide member and the second guide member are circular cylinders, and the arc surfaces of the circular cylinders are respectively abutted against the guiding slope and the bottom of the frame.

[0011] Optionally, the pulley module further includes a roller or a bearing rotatably connected to the support frame, the support frame includes support plates arranged in parallel, the roller or the bearing is located between two support plates, and a portion of the roller or the bearing is exposed from the frame.

[0012] Optionally, the pulley module further includes a buffer pad disposed between the support plates, the buffer pad being located on opposite sides of the roller or the bearing in a radial direction, and an arc groove being provided on the buffer pad, the arc groove being used to cooperate with a track of the frame.

[0013] Optionally, one side of the frame opening is provided with an inwardly bent edge, and the edge can be clamped with the support plate.

[0014] Optionally, the frame is formed by bending in one piece.

[0015] Optionally, the adjusting member includes a force-applying portion, a connecting portion and a threaded portion connected in sequence, the diameter of the connecting portion is smaller than the diameter of the threaded portion, and a limiting plate is also provided in the frame, the limiting plate is clamped on the connecting portion to limit the adjusting member.

[0016] The present invention also discloses a door and window, comprising a frame with a track, a wing leaf of a door or window, and an adjustable pulley device as described in any one of the above, wherein the wing leaf is connected to the track of the frame through the adjustable pulley device.

[0017] Compared with the prior art, the beneficial effect of the adjustable pulley device provided by the embodiment of the present invention is that: by setting at least one pulley module in the length direction in the frame, when the pulley module is set to one, the pulley module is adjusted by the cooperation of the first guide and the second guide. When the pulley module is set to two or more, a third guide is set between adjacent pulley modules, and when the slider is adjusted to slide relative to the frame by the adjusting member set at one end of the frame, the slider slides to squeeze the pulley module and compress the distance between the pulley modules. At this time, the third guide moves relative to the guide slope, and the pulley module spacing is contracted while protruding from the frame. After the door and window are installed, the pulley module can be adjusted to cooperate more closely with the frame, which is conducive to ensuring the stability of the door and window when it is pushed and pulled. In addition, when the pulley module protrudes or retracts from the frame, and the third guide is in line contact with the guide slopes on both sides and the bottom of the frame, the above method is in the form of three-point support, which is conducive to ensuring stable support, and the friction force when the pulley module moves is reduced through line contact, thereby reducing the difficulty of adjustment. By adopting the above scheme, when in use, after the adjustable pulley device is connected to the door and window, the height of the pulley module can be adjusted through the adjusting piece after the door and window are installed in the frame, so as to improve the fit with the slide rail at the frame and improve the smoothness and stability of the adjustment during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments, in which:

[0019] Figure 1 is a schematic structural diagram of an adjustable pulley device provided by an embodiment of the present invention;

[0020] Figure 2 is a cross-sectional schematic diagram of an adjustable pulley device provided by an embodiment of the present invention;

[0021] Figure 3 is a structural schematic diagram of a pulley module provided by an embodiment of the present invention;

[0022] Figure 4 is an exploded schematic diagram of a frame and a slider provided in an embodiment of the present invention;

[0023] Figure 5 is a schematic diagram of the structure of the cooperation between the limit block and the second guide member provided in an embodiment of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the third guide member provided in an embodiment of the present invention cooperating with the frame and the pulley module respectively.

[0025] The reference numerals in the figures are:

[0026] 100, adjustable pulley device; 110, frame; 112, folding edge; 120, pulley module; 122, guide slope; 124, support plate; 126, roller; 128, buffer pad; 1282, arc groove; 130, adjustment member; 132, force-applying portion; 134, connecting portion; 136, threaded portion; 140, slider; 142, first guide slot; 144, limiting slot; 150, third guide member; 160, first guide member; 170, limiting block; 172, second guide slot; 180, second guide member; 190, limiting plate. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, the preferred embodiments of the present invention are described in detail.

[0028] like Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of the present invention provides an adjustable pulley device 100, comprising: a frame 110 arranged in a long strip shape, at least one pulley module 120 is arranged in the frame 110 along the length direction, a slider 140 and a limit block 170 are respectively arranged at both ends of the frame 110, and the slider 140 can slide relative to the frame 110, an adjustment member 130 is arranged at one end of the frame 110, and the adjustment member 130 is connected to the slider 140; the pulley module 120 includes a support frame slidably connected to the frame 110, and the support frame is respectively provided with guide inclined surfaces 122 on opposite sides along the length direction of the frame 110; when the pulley module 120 is set to one, the slider A first guide member 160 is arranged between 140 and the pulley module 120, and a second guide member 180 is arranged between the limit block 170 and the pulley module 120, and the first guide member 160 and the second guide member 180 are respectively in line contact with the corresponding guide inclined surfaces 122; when there are two or more pulley modules 120, a third guide member 150 is arranged between adjacent pulley modules 120, and the third guide member 150 is respectively in line contact with the guide inclined surfaces 122 on both sides and in line contact with the bottom of the frame 110; when the adjusting member 130 drives the slider 140 to slide relative to the frame 110, the pulley module 120 can protrude or retract a part of the distance of the frame 110.

[0029] Specifically, by configuring the frame 110 in a long strip shape, more pulley modules 120 can be arranged in the frame 110, which is conducive to ensuring the reliability of the door and window matching. In actual applications, the length of the frame 110 can be flexibly set according to the size of the door and window. In an optional embodiment of the present application, the pulley modules 120 can be set to 1 to 6, which is conducive to improving the convenience of installation and adjustment.

[0030] When the pulley module 120 is set to one, the pulley module 120 can be limited only by the cooperation of the slider 140 and the limit block 170. In order to ensure the smoothness of pushing the pulley module 120 to protrude or retract a certain distance of the frame 110, a first guide 160 is provided between the slider 140 and the pulley module 120, and a second guide 180 is provided between the limit block 170 and the pulley module 120 to achieve the required cooperation form. When the pulley module 120 is set to two or more, a third guide 150 is also required to be provided between adjacent pulley modules 120 to ensure that the current pulley module 120 smoothly transmits the adjustment force to the adjacent pulley module 120. In addition, by making the first guide member 160 and the second guide member 180 respectively in line contact with the corresponding guide slopes 122, and the third guide member 150 in line contact with the guide slopes 122 on both sides and in line contact with the bottom of the frame 110, it is helpful to reduce the friction between them and provide stable support for the pulley module 120.

[0031] The adjustable pulley device 100 provided in the embodiment of the present application is provided with at least one pulley module 120 arranged along the length direction in the frame 110. When the pulley module 120 is provided as one, the pulley module 120 is adjusted by the cooperation of the first guide member 160 and the second guide member 180. When the pulley modules 120 are provided as two or more, the third guide member 150 is provided between the adjacent pulley modules 120. When the adjusting member 130 provided at one end of the frame 110 adjusts the sliding block 140 to slide relative to the frame 110, the sliding block 140 squeezes the pulley module 120 and compresses the distance between the pulley modules 120. At this time, the third guide member 150 moves relative to the guiding inclined surface 122, so that the distance between the pulley modules 120 is contracted and the distance between the pulley modules 120 can be protruded from the frame 110. After the doors and windows are installed, the pulley modules 120 can be adjusted to cooperate more closely with the frame, which is conducive to ensuring the stability of the doors and windows when they are pushed and pulled. In addition, when the pulley module 120 protrudes or retracts a part of the distance of the frame 110, and the third guide member 150 is in line contact with the guide inclined surfaces 122 on both sides and the bottom of the frame 110, the above method is conducive to ensuring stable support through the form of three-point support, and the friction force when the pulley module 120 moves is reduced through line contact, thereby reducing the difficulty of adjustment. With the above scheme, when in use, after the adjustable pulley device 100 is connected to the door and window, the height of the pulley module 120 is adjusted through the adjustment member 130 after the door and window are installed in the frame, so as to improve the matching degree with the slide rail at the frame, and improve the smoothness and safety of adjustment during use.

[0032] In addition, compared with the conventional form of guiding bevel grooves, it can also avoid the problems of inconvenient installation and easy jamming due to uneven force. Moreover, through the mutual cooperation of the first guide member 160, the second guide member 180 and the third guide member 150, the overall installation is more convenient and quick, and the transmission is smoother.

[0033] like Figure 2 and Figure 4 As shown, the slider 140 includes a first guide slot 142 corresponding to the pulley module 120 , and a first guide member 160 is disposed between the slider 140 and the adjacent pulley module 120 . The first guide member 160 is supported between the first guide slot 142 and the guide slope 122 .

[0034] Specifically, when the slider 140 slides along the frame 110 toward the position of the pulley module 120, a force is applied to the first guide member 160 through the first guide slot 142, and the first guide member 160 transmits the force to the guide slope 122. The distance between the first guide slot 142 and the guide slope 122 is compressed, and the force transmitted to the guide slope 122 is decomposed into a force component parallel to the extension direction of the frame 110 and a force component perpendicular to the extension direction of the frame 110. Under the action of the above force components, the pulley module 120 can protrude a certain distance from the frame 110.

[0035] The slider 140 includes a threaded hole corresponding to the adjusting member 130, and the adjusting member 130 is connected to the slider 140 through the threaded hole. When the adjusting member 130 rotates relative to the slider 140, the relative position between the adjusting member 130 and the slider 140 changes. When the adjusting member 130 goes deeper into the slider 140, or when the adjusting member 130 is screwed out of the slider 140, the slider 140 is driven to slide relative to the frame 110, thereby adjusting the pulley module 120. For example, when the adjusting member 130 is screwed out of the threaded hole, the distance between the slider 140 and the end of the frame 110 becomes longer, which pushes the slider 140 to slide toward one side of the pulley module 120.

[0036] In addition, a limiting groove 144 is provided on the slider 140. The limiting groove 144 is set to be a long strip and parallel to the length direction of the frame 110. A pin corresponding to the limiting groove 144 can be provided on the frame 110 to pass through the limiting groove 144. It can guide the sliding of the slider 140 and also play a limiting role to prevent the slider 140 from accidentally detaching from the frame 110 or tilting relative to the frame 110, so as to ensure reliability during transmission.

[0037] like Figure 2 and Figure 5As shown, a second guide slot 172 corresponding to the pulley module 120 is provided on the limit block 170 , and a second guide member 180 is provided between the limit block 170 and the adjacent pulley module 120 , and the second guide member 180 is supported between the second guide slot 172 and the guide slope 122 .

[0038] Specifically, by arranging the second guide member 180 between the limit block 170 and the adjacent pulley module 120, when the second guide member 180 abuts between the second guide slot 172 and the guide slope 122, a force can be applied to the second guide member 180 by means of the second guide slot 172, and the second guide member 180 then transmits the force to the corresponding guide slope 122. In this way, the guide slope 122 on the side of the pulley module 120 close to the limit block 170 abuts against the second guide member 180, and when subjected to a force in the length direction of the frame 110, the smooth movement of the pulley module 120 can be ensured, and the phenomenon of the pulley module 120 being skewed and stuck when moving can be avoided, which is conducive to ensuring reliability during use.

[0039] In an optional embodiment of the present application, the third guide member 150 , the first guide member 160 , and the second guide member 180 are circular cylinders, and the arc surfaces of the circular cylinders are respectively abutted against the guide slope 122 and the bottom of the frame 110 .

[0040] Specifically, the first guide member 160, the second guide member 180 and the third guide member 150 are circular cylinders, which is conducive to simplifying the setting form, reducing the failure rate, and ensuring the smoothness of the linkage between the pulley modules 120 while providing stable support. Figure 6 As shown, the third guide member 150 forms line contact through three points A, B and C respectively, which reduces friction and realizes stable support, which is conducive to ensuring reliability during use. It can be understood that the first guide member 160 can be integrally formed with the slider 140, and the second guide member 180 can be integrally formed with the limit block 170, which will not affect the transmission of force and can achieve the same effect.

[0041] like Figure 3 As shown, the pulley module 120 also includes a roller 126 or a bearing rotatably connected to the support frame. The support frame includes support plates 124 arranged in parallel. The roller 126 or the bearing is located between the two support plates 124, and a portion of the roller 126 or the bearing is exposed from the frame 110.

[0042] Specifically, the pulley module 120 can be rotatably connected to the support frame by a roller 126, or can be rotatably connected to the support frame by a bearing. When the bearing is rotatably connected to the support frame, the mute effect is better. In addition, in order to ensure the fit of the roller 126 or the bearing when it cooperates with the track on the frame, a groove can be set on the outer ring surface of the roller 126 or the bearing to prevent the pulley module 120 from accidentally sliding off the track. In addition, the roller 126 or the bearing is located between the two support plates 124, which is conducive to ensuring the stable support of the support plate 124 to the roller 126 or the bearing to provide the required support strength. At the same time, part of the roller 126 or the bearing is exposed from the frame 110 to prevent the frame 110 from accidentally scratching the slide rail, which is conducive to ensuring stability during cooperation.

[0043] Please continue to refer to Figure 3 The pulley module 120 also includes a buffer pad 128 disposed between the support plates 124. The buffer pad 128 is located on opposite sides of the roller 126 or the bearing in the radial direction, and an arc groove 1282 is provided on the buffer pad 128. The arc groove 1282 is used to cooperate with the track of the frame.

[0044] Specifically, the buffer pad 128 is located on opposite sides of the roller 126 or the bearing in the radial direction. When the adjustable pulley device 100 is matched with the track, the buffer pad 128 can be closely fitted with the track through the arc groove 1282, which can play a role in buffering and cleaning the track, and prevent foreign objects on the track from being drawn between the track and the pulley module 120, so as to ensure the smoothness and stability of the adjustable pulley device 100 when adjusting. In addition, a T-slot is provided on the buffer pad 128, and the T-slot divides the buffer pad 128 into two ear plates with arc grooves 1282 arranged at intervals, and a transverse groove is formed above the arc groove 1282, so as to ensure that when the pulley module 120 is matched with the track, the buffer pad 128 has a certain deformation space, thereby ensuring the reliability of matching and reducing the loss of the buffer pad 128.

[0045] like Figure 4 As shown, one side of the opening of the frame 110 is provided with an inwardly bent edge 112 , and the folded edge 112 can be clamped with the support plate 124 .

[0046] Specifically, the roller 126 or bearing of the pulley module 120 extends from the above-mentioned opening, and the support plate 124 is limited by the inwardly bent edge 112 of the frame 110 to prevent the pulley module 120 from accidentally detaching from the frame 110.

[0047] In an optional embodiment of the present application, the frame 110 is formed by bending in one piece. The above-mentioned form is conducive to ensuring the consistency of the frame 110, and makes the frame 110 more integrated and stronger, and is conducive to reducing the difficulty and cost of production.

[0048] like Figure 2 and Figure 4 As shown, the adjusting member 130 includes a force-applying portion 132, a connecting portion 134 and a threaded portion 136 which are connected in sequence. The diameter of the connecting portion 134 is smaller than the diameter of the threaded portion 136. A limiting plate 190 is also provided in the frame 110. The limiting plate 190 is clamped on the connecting portion 134 to limit the adjusting member 130.

[0049] Specifically, the force-applying portion 132 of the adjusting member 130 can be a nut of a bolt, which is convenient for adjusting the adjusting member 130 with common tools. The diameter of the connecting portion 134 is smaller than the diameter of the threaded portion 136, which is convenient for limiting the threaded portion 136 through the limiting piece 190 when the threaded portion 136 is matched with the threaded hole of the slider 140, so as to prevent the threaded portion 136 from extending out of the frame 110. During assembly, it is only necessary to connect the adjusting member 130 with the slider 140 through the frame 110, and directly insert the limiting piece 190 into the connecting portion 134. Among them, the limiting piece 190 can adopt a U-shaped structure, which is convenient for matching with the connecting portion 134.

[0050] The present invention also discloses a door and window, comprising a frame with a track, a sash of a door or window, and the adjustable pulley device 100 in the aforementioned embodiment, wherein the sash is connected to the track of the frame through the adjustable pulley device 100. The door and window comprises the same structure and beneficial effects as the adjustable pulley device 100 in the aforementioned embodiment. The structure and beneficial effects of the adjustable pulley device 100 have been described in detail in the aforementioned embodiment, and will not be repeated here.

[0051] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. For those skilled in the art, the technical solutions described in the above embodiments can be modified, or some of the technical features therein can be replaced by equivalents; and all these modifications and replacements should fall within the scope of protection of the claims attached to the present invention.

Claims

1. An adjustable pulley device, characterized in that: include: A frame arranged in a long strip shape, wherein at least one pulley module is arranged in the frame along the length direction, a slider and a limit block are arranged at both ends of the frame respectively, and the slider can slide relative to the frame, and an adjustment member is arranged at one end of the frame, and the adjustment member is connected to the slider; The pulley module comprises a support frame slidably connected to the frame, and the support frame is provided with guide inclined surfaces on opposite sides along the length direction of the frame; When there is one pulley module, a first guide is provided between the slider and the pulley module, and a second guide is provided between the limit block and the pulley module, and the first guide and the second guide are respectively in line contact with the corresponding guide slopes; When the pulley modules are provided in two or more numbers, a third guide member is further provided between adjacent pulley modules, and the third guide member is in line contact with the guide slopes on both sides respectively, and is in line contact with the bottom of the frame; When the adjusting member drives the sliding block to slide relative to the frame, the pulley module can protrude or retract a portion of the distance of the frame.

2. The adjustable pulley device according to claim 1, characterized in that: The slider includes a first guide slot corresponding to the pulley module. A first guide member is provided between the slider and the adjacent pulley module. The first guide member is abutted between the first guide slot and the guide inclined surface.

3. The adjustable pulley device according to claim 2, characterized in that: The slider includes a threaded hole corresponding to the adjusting member, and the adjusting member is connected to the slider through the threaded hole.

4. The adjustable pulley device according to claim 2, characterized in that: The limit block is provided with a second guide slot corresponding to the pulley module, and a second guide member is provided between the limit block and the adjacent pulley module, and the second guide member is supported between the second guide slot and the guide inclined surface.

5. The adjustable pulley device according to claim 3, characterized in that: The third guide member, the first guide member and the second guide member are circular cylinders, and the arc surfaces of the circular cylinders are respectively against the guide slope and the bottom of the frame.

6. The adjustable pulley device according to any one of claims 1 to 5, characterized in that: The pulley module also includes a roller or a bearing rotatably connected to the support frame, the support frame includes support plates arranged in parallel, the roller or the bearing is located between the two support plates, and a portion of the roller or the bearing is exposed from the frame.

7. The adjustable pulley device according to claim 6, characterized in that: The pulley module also includes a buffer pad arranged between the support plates, the buffer pad is located on two opposite sides of the roller or the bearing in the radial direction, and an arc groove is arranged on the buffer pad, and the arc groove is used to cooperate with the track of the frame.

8. The adjustable pulley device according to claim 5, characterized in that: One side of the frame opening is provided with an inwardly bent edge, and the edge can be clamped with the support plate.

9. The adjustable pulley device according to claim 5, characterized in that: The frame is integrally bent and formed.

10. The adjustable pulley device according to any one of claims 1 to 5, characterized in that: The adjusting member comprises a force-applying portion, a connecting portion and a threaded portion which are connected in sequence, wherein the diameter of the connecting portion is smaller than the diameter of the threaded portion, and a limiting plate is also arranged in the frame, wherein the limiting plate is clamped on the connecting portion for limiting the position of the adjusting member.

11. A door and window, characterized in that: It comprises a frame with a track, a wing sash of a door or window, and an adjustable pulley device according to any one of claims 1 to 10, wherein the wing sash is connected to the track of the frame through the adjustable pulley device.

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