Pulley mechanism and door system comprising same

Abstract

The utility model discloses a pulley mechanism and a door system comprising the same, the pulley mechanism comprises: a base having a first side wall, the first side wall is provided with a mounting hole and a rotating hole which are communicated with each other, and the mounting hole is larger than the rotating hole; the rotating plate is rotationally connected to the base, and a first pulley and a second pulley are arranged at the two ends of the rotating plate correspondingly; the sliding plate is slidably connected to the base, a transmission structure is arranged between the sliding plate and the rotating plate, and the sliding plate can drive the rotating plate to rotate through the transmission structure when sliding; the adjusting rod is provided with a threaded section and a rotating section, the threaded section is used for being in threaded connection with the sliding plate, and the two ends of the rotating section are each provided with a limiting wall; when the adjusting rod is inserted into the mounting hole, the mounting hole can allow the threaded section and the rotating section to move axially; when the rotating section is rotationally connected to the rotating hole, the two limiting walls are clamped to the two sides of the first side wall so as to limit axial movement of the rotating section. Therefore, a clamping piece does not need to be additionally arranged to limit the axial movement of the adjusting rod, and the overall assembly is simplified.

Description

Technical Field

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

[0002] Chinese Patent No. CN216240219U discloses a pulley mechanism and a door system, including: a base for fixing on the door leaf slot, and the base is provided with a first assembly hole; a rotating plate arranged on the base, with a first pulley and a second pulley respectively arranged at both ends of the rotating plate, and a second assembly hole is arranged between the first pulley and the second pulley on the rotating plate; a fastener for passing through the second assembly hole and the first assembly hole to fix the rotating plate and the base on the door leaf slot; the pulley mechanism further includes an adjusting structure for driving the adjusting plate to move horizontally, the adjusting structure includes a threaded hole arranged on the adjusting plate, a through hole arranged on the base, and an adjusting screw, the adjusting screw passes through the through hole and is in threaded connection with the threaded hole. In order to convert the rotation of the adjusting screw into the sliding of the adjusting plate, the axial displacement of the adjusting screw needs to be restricted when the adjusting screw rotates. Therefore, in order to restrict the axial displacement of the adjusting screw, a clip is arranged in the base, the clip is provided with a limiting clip groove and the adjusting screw passes through the limiting clip groove. However, the space for assembly in the base is limited, and there is a problem of difficult installation of the clip. Summary of the Utility Model

[0003] In order to overcome at least one of the above-mentioned defects of the prior art, the utility model provides a pulley mechanism and a door system including the pulley mechanism, aiming to simplify the overall assembly while restricting the axial displacement of the adjusting rod.

[0004] The technical solution adopted by the utility model to solve its problems is as follows:

[0005] A pulley mechanism includes: a base having a first side wall, the first side wall is provided with an installation hole and a rotation hole that communicate with each other, and the installation hole is larger than the rotation hole; a rotating plate rotatably connected to the base, with a first pulley and a second pulley respectively arranged at both ends of the rotating plate; a sliding plate slidably connected to the base, a transmission structure is arranged between the sliding plate and the rotating plate, and when the sliding plate slides, it can drive the rotating plate to rotate through the transmission structure; an adjusting rod is provided with a threaded section and a rotating section, the threaded section is used for threaded connection with the sliding plate, and a limiting wall is arranged at both ends of the rotating section; when the adjusting rod is inserted into the installation hole, the installation hole allows the adjusting rod to move axially; when the rotating section moves from the installation hole to the rotation hole to be rotatably connected to the rotation hole, the two limiting walls clamp on both sides of the first side wall to restrict the axial movement of the rotating section.

[0006] According to some embodiments of the present utility model, the rotation hole is located below the installation hole.

[0007] According to some embodiments of the present utility model, the diameter of the threaded section is greater than the diameter of the rotation hole.

[0008] According to some embodiments of the present utility model, the adjusting rod further includes a head. One end of the rotation section is connected to the threaded section, and the other end of the rotation section is connected to the head. One of the limiting walls is the side wall of the threaded section relatively close to the rotation section, and the other limiting wall is the side wall of the head relatively close to the rotation section.

[0009] According to some embodiments of the present utility model, a connecting wall that is arc-shaped and convex inward is connected between the installation hole and the rotation hole.

[0010] According to some embodiments of the present utility model, the base is provided with a guide groove, and the sliding plate is provided with a guide block, and the guide block is slidably connected to the guide groove.

[0011] According to some embodiments of the present utility model, the transmission structure includes an arc-shaped guide groove and a convex block slidably connected to the arc-shaped guide groove. One of the arc-shaped guide groove and the convex block is provided on the rotating plate, and the other is provided on the sliding plate.

[0012] According to some embodiments of the present utility model, the pulley mechanism further includes a rotating shaft. The rotating plate is rotatably connected to the base through the rotating shaft. The sliding plate is further provided with a waist-shaped groove, and the waist-shaped groove is slidably connected to the rotating shaft.

[0013] According to some embodiments of the present utility model, a cavity is provided inside the base. One end of the sliding plate is bent to form a bent portion, and the bent portion extends into the cavity. The threaded section extends into the cavity and is threadedly connected to the bent portion.

[0014] In addition, the present utility model further provides a door system, including the pulley mechanism as described above.

[0015] In summary, the pulley mechanism provided by the present utility model and the door system including the pulley mechanism at least have the following technical effects:

[0016] The installation hole is larger than the rotation hole. When installing the adjusting rod, the installation hole can allow the adjusting rod to move to a position where the rotation section and the rotation hole are opposite, so that the rotation hole is rotatably connected to the rotation hole. The limiting walls at both ends of the rotation section can limit the axial movement of the rotation section, thereby restricting the axial movement of the adjusting rod. In this way, there is no need to additionally provide a clip to limit the axial movement of the adjusting rod, the overall structure is simpler, and the assembly is easier. Description of the Drawings

[0017] Figure 1 The structural schematic diagram of the pulley mechanism according to the embodiment of the present utility model;

[0018] Figure 2 The exploded structural schematic diagram of the pulley mechanism according to the embodiment of the present utility model;

[0019] Figure 3 The cross-sectional structural schematic diagram of the pulley mechanism according to the embodiment of the present utility model;

[0020] Figure 4 The exploded structural schematic diagram of the pulley mechanism (the base is not shown) according to the embodiment of the present utility model;

[0021] Figure 5 The structural schematic diagram of the base according to the embodiment of the present utility model.

[0022] Among them, the meanings of the reference numerals are as follows:

[0023] 1. Base; 11. First side wall; 111. Mounting hole; 112. Rotating hole; 113. Connecting wall; 12. Cavity; 13. Guide groove; 2. Rotating plate; 21. First pulley; 22. Second pulley; 3. Sliding plate; 31. Guide block; 32. Bending part; 33. Waist-shaped groove; 4. Adjusting rod; 41. Threaded section; 42. Rotating section; 43. Head; 44. Limiting wall; 5. Transmission structure; 51. Arc-shaped guide groove; 52. Convex block; 6. Rotating shaft. Detailed implementation manners

[0024] For better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0025] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0027] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] Please refer to Figures 1 to 5 , this embodiment discloses a pulley mechanism, including a base 1, a rotating plate 2, a sliding plate 3 and an adjusting rod 4; the base 1 has a first side wall 11, and the first side wall 11 is provided with a mutually communicating mounting hole 111 and a rotating hole 112, and the mounting hole 111 is larger than the rotating hole 112; the rotating plate 2 is rotatably connected to the base 1, and both ends of the rotating plate 2 are respectively provided with a first pulley 21 and a second pulley 22; the sliding plate 3 is slidably connected to the base 1, and a transmission structure 5 is arranged between the sliding plate 3 and the rotating plate 2. When the sliding plate 3 slides, the rotating plate 2 can be driven to rotate through the transmission structure 5; the adjusting rod 4 is provided with a threaded section 41 and a rotating section 42, the threaded section 41 is used for threaded connection with the sliding plate 3, and a limiting wall 44 is provided at both ends of the rotating section 42; when the adjusting rod 4 is inserted into the mounting hole 111, the mounting hole 111 allows the threaded section 41 and the rotating section 42 to perform axial movement; when the rotating section 42 moves from the mounting hole 111 to the rotating hole 112 to be rotatably connected to the rotating hole 112, the two limiting walls 44 are clamped on both sides of the first side wall 11 to limit the axial movement of the rotating section 42.

[0029] Specifically, in this embodiment, the first pulley 21 is used for sliding cooperation with a guiding surface of the track, and the second pulley 22 is used for sliding cooperation with another guiding surface of the track; when the adjusting rod 4 is rotated, the threaded cooperation between the threaded section 41 and the sliding plate 3 can drive the sliding plate 3 to slide relative to the base 1. When the sliding plate 3 slides, the sliding plate 3 is driven to rotate through the transmission structure 5, so as to adjust the assembly positions of the first pulley 21 and the second pulley 22 to adapt to tracks of different widths, so that the first pulley 21 and the second pulley 22 are respectively in good cooperation with the corresponding guiding surfaces, thereby enabling the pulley mechanism to guide the movement of the door leaf more stably.

[0030] It can be understood that in order to convert the rotation of the adjusting rod 4 into the sliding of the sliding plate 3, the axial displacement of the adjusting rod 4 needs to be restricted when the adjusting rod 4 rotates. In the prior art, in order to restrict the axial displacement of the adjusting rod 4, a clip is usually arranged in the base 1. However, the space for assembly in the base 1 is limited, and there is a problem of difficult installation of the clip.

[0031] In the pulley mechanism provided in this embodiment, the mounting hole 111 is larger than the rotating hole 112. When the adjusting rod 4 is installed, the mounting hole 111 allows the adjusting rod 4 to move to a position where the rotating section 42 is opposite to the rotating hole 112, and then the rotating hole 112 is rotatably connected to the rotating hole 112. The limiting walls 44 located at both ends of the rotating section 42 can restrict the axial movement of the rotating section 42, thereby restricting the axial movement of the adjusting rod 4. In this way, there is no need to additionally arrange a clip to restrict the axial movement of the adjusting rod 4, and the overall structure is simpler and the assembly is easier.

[0032] Such as Figure 2 AndFigure 5 As shown, preferably, in this embodiment, the rotation hole 112 is located below the mounting hole 111. In this way, after moving the adjusting rod 4 to a position where the rotation section 42 and the rotation hole 112 are opposite to each other, the rotation section 42 can directly fall into the rotation hole 112, making the installation more labor-saving and convenient.

[0033] Preferably, in this embodiment, the diameter of the threaded section 41 is larger than the diameter of the rotation hole 112. It can be understood that the rotation hole 112 and the rotation section 42 are in rotational fit. In this embodiment, the diameters of the rotation hole 112 and the rotation section 42 are substantially equal, that is, the diameter of the threaded section 41 is also larger than the diameter of the rotation section 42. In this way, it can be avoided that the threaded section 41 enters the rotation hole 112, thereby avoiding the problem of misalignment in the assembly of the adjusting rod 4 and being conducive to the accurate assembly of the adjusting rod 4.

[0034] It should be noted that, in some other embodiments, the diameter of the threaded section 41 can also be smaller than or equal to the diameter of the rotation hole 112, as long as the limiting walls 44 at both ends of the rotation section 42 can clamp on both sides of the first side wall 11 to limit the axial displacement of the adjusting rod 4.

[0035] As Figure 2 , Figure 3 and Figure 4 shown, preferably, in this embodiment, the adjusting rod 4 further includes a head 43. One end of the rotation section 42 is connected to the threaded section 41, and the other end of the rotation section 42 is connected to the head 43. One limiting wall 44 is the side wall of the threaded section 41 relatively close to the rotation section 42, and the other limiting wall 44 is the side wall of the head 43 relatively close to the rotation section 42. Using the side walls of the threaded section 41 and the head 43 to clamp on both sides of the first side wall 11 to limit the axial displacement of the rotation section 42, the structure of the adjusting rod 4 is relatively simple, the function is easy to achieve, and the production cost is relatively low.

[0036] It should be noted that, in some other embodiments, the limiting wall 44 can also be an extension wall structure extending radially along the rod body of the adjusting rod 4, which can be set according to actual needs.

[0037] As Figure 2 and Figure 5 shown, preferably, in this embodiment, in order to facilitate moving the rotation section 42 from the mounting hole 111 to the rotation hole 112, a connecting wall 113 that is arc-shaped and convex inward is connected between the mounting hole 111 and the rotation hole 112.

[0038] Preferably, in this embodiment, the base 1 is provided with a guide groove 13, and the sliding plate 3 is provided with a guide block 31. The guide block 31 is slidably connected to the guide groove 13. The sliding fit between the guide block 31 and the guide groove 13 can provide guidance for the sliding of the sliding plate 3 relative to the base 1 and avoid the sliding plate 3 from shaking during sliding.

[0039] As Figure 2 and Figure 4 shown, preferably, in this embodiment, the transmission structure 5 includes an arc-shaped guide groove 51 and a convex block 52 slidably connected to the arc-shaped guide groove 51. Preferably, as shown in the figure, the convex block 52 is arranged on the rotating plate 2, and the arc-shaped guide groove 51 is arranged on the sliding plate 3. When the adjusting rod 4 rotates to drive the sliding plate 3 to move, the arc-shaped guide groove 51 generates a displacement, thereby forcing the convex block 52 to move along the track of the arc-shaped guide groove 51, and further realizing the rotation of the rotating plate 2, which has the advantages of simple structure and reliable operation.

[0040] It should be noted that in some other embodiments, the convex block 52 can be arranged on the sliding plate 3, and the arc-shaped guide can be correspondingly arranged on the rotating plate 2, which can be selected according to actual needs and is not uniquely limited here.

[0041] As Figure 2 and Figure 4 shown, preferably, in this embodiment, the pulley mechanism further includes a rotating shaft 6. The rotating plate 2 is rotatably connected to the base 1 through the rotating shaft 6. The sliding plate 3 is further provided with a waist-shaped groove 33, and the waist-shaped groove 33 is slidably connected to the rotating shaft 6. The sliding fit between the waist-shaped groove 33 and the rotating shaft 6 can, on the one hand, avoid interference between the sliding plate 3 and the rotating shaft 6 when the sliding plate 3 slides relative to the base 1, and on the other hand, can also provide guidance for the sliding of the sliding plate 3 relative to the base 1.

[0042] A cavity 12 is arranged in the base 1. One end of the sliding plate 3 is bent to form a bent portion 32, and the bent portion 32 extends into the cavity 12. The threaded section 41 extends into the cavity 12 and is threadedly connected to the bent portion 32. The sliding plate 3 can be set as a plate shape, which is beneficial to saving materials. Further, in a preferred embodiment, the bent portion 32 and the sliding plate 3 are integrally formed to improve the connection strength.

[0043] In addition, this embodiment further provides a door system, including the pulley mechanism as described above, which has all the advantages of the above pulley mechanism and will not be elaborated here.

[0044] In summary, the pulley mechanism and the door system including the pulley mechanism disclosed by the present utility model can at least bring the following beneficial technical effects:

[0045] 1) There is no need to separately set clip pieces to limit the axial movement of the adjusting rod 4, the overall structure is simpler, and the assembly is easier;

[0046] 2) The rotating hole 112 is located below the mounting hole 111. After the adjusting rod 4 is moved to a position where the rotating section 42 is opposite to the rotating hole 112, the rotating section 42 can directly fall into the rotating hole 112, and the installation is more labor-saving and convenient;

[0047] 3) The diameter of the threaded section 41 is larger than the diameter of the rotation hole 112, which can prevent the threaded section 41 from entering the rotation hole 112, thus avoiding the problem of misalignment in the assembly of the adjusting rod 4 and facilitating the accurate assembly of the adjusting rod 4.

[0048] 4) By using the side walls of both the threaded section 41 and the head 43 to clamp on both sides of the first side wall 11 to limit the axial displacement of the rotation section 42, the structure of the adjusting rod 4 is relatively simple, the function is easy to achieve, and the production cost is relatively low.

[0049] The technical means disclosed in the solution of the present utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. A pulley mechanism, characterized in that: include: A base (1) having a first side wall (11), wherein the first side wall (11) is provided with a mounting hole (111) and a rotation hole (112) which are interconnected, and the mounting hole (111) is larger than the rotation hole (112); A rotating plate (2) is rotatably connected to the base (1), and a first pulley (21) and a second pulley (22) are respectively provided at two ends of the rotating plate (2); A sliding plate (3) is slidably connected to the base (1), a transmission structure (5) is provided between the sliding plate (3) and the rotating plate (2), and when the sliding plate (3) slides, the rotating plate (2) can be driven to rotate by the transmission structure (5); The adjusting rod (4) is provided with a threaded section (41) and a rotating section (42); the threaded section (41) is used for threaded connection with the sliding plate (3); and both ends of the rotating section (42) are provided with a limiting wall (44); when the adjusting rod (4) is inserted into the mounting hole (111), the mounting hole (111) allows the adjusting rod (4) to move axially; when the rotating section (42) moves from the mounting hole (111) to the rotating hole (112) to be rotatably connected to the rotating hole (112), the two limiting walls (44) are clamped on both sides of the first side wall (11) to limit the axial movement of the rotating section (42).

2. The pulley mechanism according to claim 1, characterized in that: The rotating hole (112) is located below the mounting hole (111).

3. The pulley mechanism according to claim 1, characterized in that: The diameter of the threaded section (41) is greater than the diameter of the rotating hole (112).

4. The pulley mechanism according to claim 3, characterized in that: The adjusting rod (4) further comprises a head (43), one end of the rotating section (42) is connected to the threaded section (41), the other end of the rotating section (42) is connected to the head (43), one of the limiting walls (44) is a side wall of the threaded section (41) relatively close to the rotating section (42), and the other limiting wall (44) is a side wall of the head (43) relatively close to the rotating section (42).

5. The pulley mechanism according to claim 1, characterized in that: An arc-shaped and inwardly convex connecting wall (113) is connected between the mounting hole (111) and the rotating hole (112).

6. The pulley mechanism according to claim 1, characterized in that: The base (1) is provided with a guide groove (13), and the sliding plate (3) is provided with a guide block (31), and the guide block (31) is slidably connected to the guide groove (13).

7. The pulley mechanism according to claim 1, characterized in that: The transmission structure (5) comprises an arc-shaped guide groove (51) and a protrusion (52) slidably connected to the arc-shaped guide groove (51); one of the arc-shaped guide groove (51) and the protrusion (52) is arranged on the rotating plate (2), and the other of the two is arranged on the sliding plate (3).

8. The pulley mechanism according to claim 1, characterized in that: The pulley mechanism also includes a rotating shaft (6), and the rotating plate (2) is rotatably connected to the base (1) via the rotating shaft (6). The sliding plate (3) is also provided with a waist-shaped groove (33), and the waist-shaped groove (33) is slidably connected to the rotating shaft (6).

9. The pulley mechanism according to any one of claims 1 to 8, characterized in that: A cavity (12) is provided in the base (1); one end of the sliding plate (3) is bent to form a bent portion (32); the bent portion (32) extends into the cavity (12); and the threaded section (41) extends into the cavity (12) and is threadedly connected to the bent portion (32).

10. Door system, characterized in that, Comprising the pulley mechanism as described in any one of claims 1-9.

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