Pulley assembly and door and window

Abstract

The utility model relates to the technical field of door and window accessories, in particular to a pulley assembly and a door and window. The pulley assembly comprises a connecting base, pulley modules oppositely arranged on the connecting base and a sliding piece connected in the connecting base in a sliding mode, a limiting hole is formed in the connecting base, a threaded hole coaxial with the limiting hole is formed in the sliding piece, a threaded rod is rotationally arranged in the limiting hole, and the threaded rod is connected with the sliding piece in a threaded mode. A threaded hole is formed in the sliding part, the threaded rod is connected with the sliding part in a threaded mode through the threaded hole, a protruding edge corresponding to the door and window sash body and a wedge-shaped protruding block corresponding to the sliding part are arranged on the connecting base, and when the threaded rod drives the sliding part to slide along the connecting base, the wedge-shaped protruding block abuts against the protruding edge. The sliding piece can abut against the wedge-shaped protruding block to protrude out of the connecting base so that the protruding edge can abut against and be locked with the door and window sash body in the direction perpendicular to the sliding direction of the sliding piece. By the adoption of the mode, the probability that abnormal sound is generated due to loosening of the screws can be reduced, and the use stability can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of door and window fittings, in particular to a pulley assembly and a door and window. Background Art

[0002] Doors and windows are important components in the building envelope structure system. They are divided into enclosure components or partition components according to their different positions, and have different design requirements, such as functions of heat preservation, heat insulation, sound insulation, waterproofing, and fire prevention.

[0003] With the evolution of doors and windows, push-pull doors and windows have been more and more widely used. Push-pull doors and windows open in a plane, occupy less space, and the doors and windows can slide along the installation frame. In order to ensure the smoothness and fluency when the doors and windows slide, a pulley assembly is usually added at the matching position between the door and window sash and the frame to facilitate the matching with the frame.

[0004] Currently, when fixing the pulley assembly on the door and window sash, the connecting seat of the pulley assembly is usually fastened with screws. In the above method, the screws are prone to looseness, resulting in abnormal noises when pushing and pulling the doors and windows. Summary of the Utility Model

[0005] The technical problem to be solved by the embodiments of the utility model is to provide a pulley assembly, which can reduce the probability of abnormal noises caused by screw loosening and is beneficial to improving the stability during use.

[0006] The utility model discloses a pulley assembly for being installed at the top of a door and window sash. The pulley assembly includes: a connecting seat, pulley modules oppositely arranged on the connecting seat, and a sliding member slidably connected in the connecting seat. A limiting hole is arranged on the connecting seat, a threaded hole coaxial with the limiting hole is arranged on the sliding member, a screw rod is rotatably arranged in the limiting hole, and the screw rod is threadedly connected with the sliding member through the threaded hole. A convex edge corresponding to the door and window sash and a wedge-shaped convex block corresponding to the sliding member are arranged on the connecting seat. When the screw rod drives the sliding member to slide along the connecting seat, the sliding member can abut against the wedge-shaped convex block and protrude from the connecting seat, so that the convex edge presses and locks against the top of the door and window sash in a direction perpendicular to the sliding direction of the sliding member.

[0007] Optionally, the connecting seat includes a base body and connecting blocks arranged at intervals on the base body. An accommodating groove for the sliding member to slide is formed between the two connecting blocks. The convex edge and the limiting hole are located on the connecting block, and a clamping groove is formed between the convex edge and the base body.

[0008] Optionally, a sliding groove is provided at a position corresponding to the accommodating groove on the base body, a sliding block corresponding to the sliding groove is provided on the sliding member, and the wedge-shaped convex block is provided on the base body and located on opposite sides of the sliding groove.

[0009] Optionally, the pulley module includes a connecting shaft and pulleys provided on the connecting shaft. The connecting shaft is connected to the base body, and the wheel surface of the pulley protrudes from the base body.

[0010] Optionally, a countersunk hole is provided on the base body, and a convex cap is provided on the connecting shaft. The convex cap is clamped at the countersunk hole.

[0011] Optionally, the wedge-shaped convex block includes a starting edge close to the sliding member and a terminating edge far from the sliding member. The starting edge and the terminating edge are connected by a guiding surface. The distance between the starting edge and the terminating edge is L, where 4 mm ≤ L ≤ 6 mm; the height difference between the starting edge and the terminating edge is D, where 0.5 mm ≤ D ≤ 1.5 mm.

[0012] Optionally, anti-slip teeth are provided on a side surface of the sliding member facing away from the connecting seat.

[0013] Optionally, an anti-slip pad is provided on a side of the sliding member of the pulley assembly facing the door and window sash body.

[0014] The present utility model also discloses a door and window, including a frame body, a door and window sash body, and the pulley assembly as described in any one of the above. The pulley assembly is provided at the top of the door and window sash body so that the door and window sash body slides relative to the frame body through the pulley assembly.

[0015] Optionally, the frame body includes a first enclosure and a second enclosure arranged along the thickness direction. L-shaped buckles are arranged at intervals along the thickness direction at the top of the door and window sash body. The openings of the L-shaped buckles face each other and are used for pressing and locking with the convex edge of the pulley assembly.

[0016] Compared with the prior art, the beneficial effects of the pulley assembly and the door and window provided by the embodiment of the present utility model are as follows: Through the pulley module arranged on the connecting seat, after the connecting seat is connected and locked with the door and window sash, the pulley module can rollingly cooperate with the frame corresponding to the door and window sash to realize the sliding cooperation between the door and window sash and the frame. When connecting the connecting seat with the door and window sash, through the limiting hole arranged on the connecting seat and the sliding member slidably connected with the connecting seat, when the screw rotates in the limiting hole and is threadedly connected with the sliding member, as the screw rotates, it can drive the sliding member to move towards the position where the wedge-shaped protrusion is located. Thus, under the abutting action of the wedge-shaped protrusion, the sliding member offsets towards the outside of the connecting seat to protrude from the connecting seat. In this way, under the action of the sliding member, the convex edge presses and locks against the connection between the sliding direction perpendicular to the sliding member and the door and window sash to realize the connection with the door and window sash. Among them, the screw, the connecting seat, and the sliding member are all rigid components, and it can be considered that there is almost no deformation amount after being subjected to an external force. Therefore, the protruding displacement amount of the sliding member is also small. The protruding displacement amount of the sliding member is caused by the gap between the screw and the sliding member being threadedly connected, so that the sliding member can protrude to a certain extent. And under the abutting action of the wedge-shaped protrusion on the sliding member, the thread teeth at the connection between the screw and the sliding member are in an offset engagement state, which can play a role in preventing loosening and also avoid being unable to be disassembled due to the deformation and failure of the screw, which is beneficial to ensuring the reliability and stability of the connection. By adopting the above method, the probability of generating abnormal noises due to screw loosening can be reduced, which is beneficial to improving the stability during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The technical solutions of the present utility model will be further described in detail below with reference to the drawings and embodiments. In the drawings:

[0018] Figure 1 is a schematic structural view of the pulley assembly from the first perspective provided by the embodiment of the present utility model;

[0019] Figure 2 is a schematic structural view of the pulley assembly from the second perspective provided by the embodiment of the present utility model;

[0020] Figure 3 is a cross-sectional view of the pulley assembly provided by the embodiment of the present utility model;

[0021] Figure 4 is an exploded view of the pulley assembly provided by the embodiment of the present utility model;

[0022] Figure 5 is Figure 2 a partial enlarged view of part A in

[0023] Figure 6 is a schematic structural view of a part of the door and window provided by the embodiment of the present utility model.

[0024] The reference numerals in the drawings are as follows:

[0025] 100, pulley assembly; 110, connecting seat; 112, base; 1122, chute; 1124, countersunk hole; 114, connecting block; 115, receiving groove; 116, limiting hole; 117, wedge-shaped projection; 1172, starting edge; 1174, terminating edge; 1176, guiding surface; 118, flange; 119, clamping groove; 120, pulley module; 122, connecting shaft; 124, pulley; 126, convex cap; 130, sliding member; 132, slider; 134, anti-slip teeth; 140, screw; 200, door and window; 210, frame body; 212, first enclosure; 214, second enclosure; 220, door and window sash; 222, L-shaped buckle. Detailed implementation mode

[0026] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Now, with reference to the accompanying drawings, the preferred embodiments of the present utility model will be described in detail.

[0027] As Figures 1 to 5 shown, an embodiment of the present utility model provides a pulley assembly 100 for being installed on the top of a door and window sash. The pulley assembly 100 includes: a connecting seat 110, pulley modules 120 oppositely arranged on the connecting seat 110, and a sliding member 130 slidably connected in the connecting seat 110. A limiting hole 116 is provided on the connecting seat 110, a threaded hole coaxial with the limiting hole 116 is provided on the sliding member 130, a screw 140 is rotatably arranged in the limiting hole 116, and the screw 140 is threadedly connected with the sliding member 130 through the threaded hole. A flange 118 corresponding to the door and window sash and a wedge-shaped projection 117 corresponding to the sliding member 130 are provided on the connecting seat 110. When the screw 140 drives the sliding member 130 to slide along the connecting seat 110, the sliding member 130 can abut against the wedge-shaped projection 117 and protrude from the connecting seat 110, so that the flange 118 presses against and locks the door and window sash in a direction perpendicular to the sliding direction of the sliding member 130.

[0028] Specifically, the connecting seat 110 is used to connect with the door and window sash, and the pulley module 120 is used to roll and cooperate with the frame corresponding to the same door and window sash. When connecting the connecting seat 110 with the door and window sash, first snap and slide the convex edge 118 into the corresponding connecting part of the door and window sash, and then rotate the screw 140. When the screw 140 rotates, it is limited by the limiting hole 116 and has no axial displacement relative to the connecting seat 110. At this time, the sliding member 130 threadedly connected to the screw 140 will slide relative to the connecting seat 110. When the connecting seat 110 slides towards the position close to the wedge-shaped protrusion 117, under the abutting action of the wedge-shaped protrusion 117, the sliding member 130 will protrude out of the connecting seat 110. Since there is a small gap between the convex edge 118 and the corresponding connecting part of the door and window sash, when the sliding member 130 protrudes out of the connecting seat 110, it will force the convex edge 118 to press and lock against the connecting part of the door and window sash perpendicular to the sliding direction of the sliding member 130, forming the required self-fixing connection relationship.

[0029] Among them, the screw 140 can directly adopt a bolt. The limiting hole 116 has an inner diameter corresponding to the rod body of the bolt and an inner diameter corresponding to the nut to ensure the axial limitation of the screw 140 relative to the limiting hole 116, and can also drive the sliding member 130 to move along the axial direction of the screw 140 through the threaded cooperation with the sliding member 130.

[0030] The pulley assembly 100 provided by the embodiment of the present application, through the pulley module 120 provided on the connecting seat 110, after the connecting seat 110 is connected and locked to the door and window sash, the pulley module 120 can rollingly cooperate with the frame corresponding to the door and window sash to achieve the sliding cooperation between the door and window sash and the frame. When connecting the connecting seat 110 to the door and window sash, through the limiting hole 116 provided on the connecting seat 110 and the sliding member 130 slidably connected to the connecting seat 110, when the screw 140 rotates in the limiting hole 116 and is threadedly connected to the sliding member 130, as the screw 140 rotates, it can drive the sliding member 130 to move towards the position where the wedge-shaped protrusion 117 is located. Thus, under the abutting action of the wedge-shaped protrusion 117, the sliding member 130 is offset towards the outside of the connecting seat 110 to protrude from the connecting seat 110. In this way, under the action of the sliding member 130, the convex edge 118 presses and locks against the connection between the sliding direction perpendicular to the sliding member 130 and the door and window sash to achieve the connection with the door and window sash. Among them, the screw 140, the connecting seat 110, and the sliding member 130 are all rigid components, and it can be considered that there is almost no deformation amount after being subjected to external forces. Therefore, the protruding displacement amount of the sliding member 130 is also small. The protruding displacement amount of the sliding member 130 is caused by the gap between the screw 140 and the sliding member 130 being threadedly connected, so that the sliding member 130 can protrude to a certain extent. And under the abutting action of the sliding member 130 by the wedge-shaped protrusion 117, the thread teeth at the connection between the screw 140 and the sliding member 130 are in an offset engagement state, which can play a role in preventing loosening and can also avoid being unable to be disassembled due to the deformation and failure of the screw 140, which is beneficial to ensuring the reliability and stability of the connection. By adopting the above method, the probability of generating abnormal noises due to screw loosening can be reduced, which is beneficial to improving the stability during use.

[0031] As Figure 1 shown, the connecting seat 110 includes a base body 112 and connecting blocks 114 spaced apart on the base body 112. An accommodation groove 115 for the sliding member 130 to slide is formed between the two connecting blocks 114. The convex edge 118 and the limiting hole 116 are located on the connecting block 114, and a clamping groove 119 is formed between the convex edge 118 and the base body 112.

[0032] Specifically, the base body 112 and the connecting block 114 are integrally formed, which is beneficial to ensuring the integrity of the connecting seat 110 and the reliability of the connection. By forming an accommodating groove 115 for the sliding member 130 to slide between the two connecting blocks 114, it is beneficial to ensure the stable sliding of the sliding member 130 and reduce the influence of the external environment. In addition, when the limiting hole 116 is provided on the connecting block 114, it penetrates through the two connecting blocks 114, so that the screw 140 can pass through the two connecting blocks 114 to support and limit the screw 140, reducing the probability of the screw 140 being deformed by force. The convex edges 118 are provided on the opposite sides of the connecting block 114, so that clamping grooves 119 are formed on the opposite sides of the connecting seat 110, which is beneficial to improving the stability and reliability when cooperating with the door and window sash.

[0033] As Figure 4 shown, a sliding groove 1122 is provided at the corresponding position of the base body 112 and the accommodating groove 115, a sliding block 132 corresponding to the sliding groove 1122 is provided on the sliding member 130, and the wedge-shaped convex block 117 is provided on the base body 112 and is located on the opposite sides of the sliding groove 1122.

[0034] Specifically, the extending direction of the length of the sliding groove 1122 is consistent with the axial direction of the screw 140, so that when the screw 140 rotates, it drives the sliding member 130 to slide along the sliding groove 1122. In the above form, the side of the sliding member 130 can be limited, and when the sliding member 130 is affected by an external force with a lateral acting force, it can avoid affecting the straightness of the screw 140, which is beneficial to protecting the screw 140 while ensuring the sliding of the sliding member 130. In addition, the wedge-shaped convex block 117 is provided on the base body 112 and is located on the opposite sides of the sliding groove 1122. When the sliding member 130 contacts the wedge-shaped convex block 117, the force on the sliding member 130 is more uniform, which is beneficial to ensuring that the sliding member 130 protrudes from the connecting seat 110 without skewing, and is beneficial to improving the stability of the cooperation.

[0035] As Figure 4 shown, the pulley module 120 includes a connecting shaft 122 and pulleys 124 provided on the connecting shaft 122. The connecting shaft 122 is connected to the base body 112, and the wheel surface of the pulley 124 protrudes from the base body 112.

[0036] Specifically, the pulley 124 can be a rubber wheel or a bearing. When using a bearing, a rubber ring can be wrapped around the outer ring of the bearing to achieve a sound insulation effect. The connecting shaft 122 and the base body 112 can be installed by welding, or an installation hole can be provided on the base body 112, and the connecting shaft 122 and the installation hole can be connected by an interference fit, as long as the reliability of the connection can be ensured.

[0037] As Figure 4As shown, in an alternative embodiment of the present application, a countersunk hole 1124 is provided on the base body 112, and a convex cap 126 is provided on the connecting shaft 122. The convex cap 126 is clamped at the countersunk hole 1124.

[0038] Specifically, by providing a countersunk hole 1124 on the base body 112 and a convex cap 126 on the connecting shaft 122, when the connecting shaft 122 cooperates with the countersunk hole 1124, the convex cap 126 can be clamped and limited with the countersunk hole 1124 to prevent the connecting shaft 122 from loosening from the base body 112. In addition, the convex cap 126 is also limited between the base body 112 and the sliding member 130, which can further limit the connecting shaft 122.

[0039] As Figure 2 、 Figure 3 and Figure 5 shown, the wedge-shaped convex block includes a starting edge close to the sliding member and a terminating edge far from the sliding member. The starting edge and the terminating edge are connected by a guiding surface. The distance between the starting edge and the terminating edge is L, where 4 mm ≤ L ≤ 6 mm; the height difference between the starting edge and the terminating edge is D, where 0.5 mm ≤ D ≤ 1.5 mm.

[0040] Specifically, the guiding surface can be a curved surface or a flat surface, and can be flexibly set in actual applications. In addition, the outward convex dimension of the sliding member 130 needs to be small. Therefore, only 0.5 mm ≤ D ≤ 1.5 mm is required. For example, the dimension of D can be set to 0.5 mm, 1 mm, 1.2 mm or 1.5 mm, etc., as long as it can ensure that within the sliding stroke of the sliding member 130, it protrudes to the required dimension. The above-mentioned sliding stroke is the distance between the starting edge and the terminating edge, which is L, where 4 mm ≤ L ≤ 6 mm. For example, the dimension of L can be set to 4 mm, 5 mm or 6 mm, etc. The above setting form is beneficial to ensure that it gradually protrudes during the sliding process of the sliding member 130, which is beneficial to ensuring closer cooperation to ensure the stability of the current state.

[0041] As Figure 4 shown, in an alternative embodiment of the present application, an anti-slip tooth 134 is provided on the side surface of the sliding member 130 facing away from the connecting seat 110.

[0042] By adopting the above method, after the sliding member 130 protrudes from the mounting seat and cooperates with the door and window sash, it is beneficial to increase the friction force at the contact surface and ensure the stability of the current locked state.

[0043] In an alternative embodiment of the present application, an anti-slip pad is provided on the side of the sliding member 130 of the pulley assembly 100 facing the door and window sash 220.

[0044] Specifically, in actual applications, an anti-slip pad can be provided on the side of the sliding member 130 of the pulley assembly 100 facing the door or window sash 220. When there are anti-slip teeth 134 on this side, the anti-slip pad is provided on the anti-slip teeth 134. This serves to prevent slipping and increase friction, thereby enhancing the stability during connection.

[0045] As Figure 6 shown, the present utility model also discloses a door or window 200, which includes a frame body 210, a door or window sash 220, and the pulley assembly 100 in the foregoing embodiment. The pulley assembly 100 is disposed at the top of the door or window sash 220 so that the door or window sash 220 can slide relative to the frame body 210 through the pulley assembly 100.

[0046] Specifically, by disposing the pulley assembly 100 at the top of the door or window sash, during use, the pulley assembly 100 can cooperate with the frame body 210 through the pulley module 120 to ensure the smoothness of the sliding between the door or window sash 220 and the frame body 210, avoid frictional noise, and make it more labor-saving to slide the door or window sash 220. Other beneficial effects of the pulley assembly 100 have been described in the foregoing embodiment and will not be elaborated herein. It should be noted that the pulley assembly 100 can be applied to both doors and windows, so the embodiments of this application are collectively referred to as doors and windows.

[0047] As Figure 6 shown, the frame body 210 includes a first enclosure 212 and a second enclosure 214 disposed along the thickness direction. At the top of the door or window sash 220, L-shaped buckles 222 are spaced apart along the thickness direction, and the openings of the L-shaped buckles 222 face each other for pressing and locking with the convex edge 118 of the pulley assembly 100.

[0048] Specifically, through the first enclosure 212 and the second enclosure 214 disposed along the thickness direction, the door or window sash 220 can be limited, preventing the door or window sash 220 from tilting. At the same time, the pulley module 120 of the pulley assembly 100 abuts against the first enclosure 212 and the second enclosure 214 respectively to ensure the verticality of the door or window sash. In addition, the L-shaped buckles 222 with opposite openings are spaced apart along the thickness direction at the top of the door or window sash 220, which can limit the convex edge 118 between the two L-shaped buckles 222 and can also play a role in limiting the convex edge 118 to prevent the convex edge 118 from directly loosening from the top of the L-shaped buckle 222. When the pulley assembly 100 cooperates with the L-shaped buckle 222 through the convex edge 118, it can only slide in from the side, and under the action of the sliding member 130, the convex edge 118 can be pressed and locked with the upper side edge of the L-shaped buckle 222 to ensure a stable connection between them.

[0049] 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 recorded in the above embodiments can be modified, or some of the technical features can be equivalently replaced; and all such modifications and replacements should fall within the protection scope of the appended claims of the present invention.

Claims

1. A pulley assembly for mounting on the top of a door or window sash, characterized in that, The pulley assembly includes: a connecting seat, pulley modules oppositely arranged on the connecting seat, and a sliding member slidably connected within the connecting seat. The connecting seat is provided with a limiting hole, and the sliding member is provided with a threaded hole coaxial with the limiting hole. A screw rod is rotatably arranged within the limiting hole, and the screw rod is threadedly connected to the sliding member through the threaded hole. The connecting seat is provided with a flange corresponding to the door or window sash, and a wedge-shaped projection corresponding to the sliding member. When the screw rod drives the sliding member to slide along the connecting seat, the sliding member can abut against the wedge-shaped projection and protrude from the connecting seat, so that the flange abuts and locks against the door or window sash in a direction perpendicular to the sliding direction of the sliding member.

2. The pulley assembly according to claim 1, wherein The connecting seat includes a base body, and connecting blocks spaced apart on the base body. An accommodating groove for the sliding member to slide is formed between the two connecting blocks. The flange and the limiting hole are located on the connecting block, and a clamping groove is formed between the flange and the base body.

3. The pulley assembly according to claim 2, characterized in that, A sliding groove is provided at a position corresponding to the accommodating groove on the base body. A sliding block corresponding to the sliding groove is provided on the sliding member. The wedge-shaped projection is arranged on the base body and is located on opposite sides of the sliding groove.

4. The pulley assembly according to claim 2, wherein, The pulley module includes a connecting shaft, and a pulley arranged on the connecting shaft. The connecting shaft is connected to the base body, and the wheel surface of the pulley protrudes from the base body.

5. The pulley assembly according to claim 4, characterized in that, A countersunk hole is provided on the base body, and a convex cap is provided on the connecting shaft. The convex cap is clamped at the countersunk hole.

6. The pulley assembly according to any one of claims 1-5, characterized in that The wedge-shaped projection includes a starting edge close to the sliding member, and a terminating edge far from the sliding member. The starting edge and the terminating edge are connected by a guiding surface. The distance between the starting edge and the terminating edge is L, where 4mm ≤ L ≤ 6mm; the height difference between the starting edge and the terminating edge is D, where 0.5mm ≤ D ≤ 1.5mm.

7. The pulley assembly according to claim 1, characterized in that, An anti-slip tooth is provided on a side surface of the sliding member facing away from the connecting seat.

8. The pulley assembly according to claim 1 or 7, characterized in that, An anti-slip pad is provided on a side of the sliding member of the pulley assembly facing the door or window sash.

9. A door and window, characterized in that, It includes a frame body, a door or window sash, and the pulley assembly according to any one of claims 1-8. The pulley assembly is arranged at the top of the door or window sash, so that the door or window sash can slide relative to the frame body through the pulley assembly.

10. The door and window according to claim 9, characterized in that, The frame body includes a first enclosure and a second enclosure arranged along the thickness direction. L-shaped buckles are spaced apart along the thickness direction at the top of the door or window sash. The openings of the L-shaped buckles face each other and are used for abutting and locking against the flange of the pulley assembly.

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