Pulley assembly

Abstract

The utility model relates to the technical field of profile connection, and provides a pulley assembly which comprises an outer shell, an inner shell, a pulley sleeve, a sliding wheel and an elastic piece, the outer shell is connected to a frame, the inner shell is connected into the outer shell, the pulley sleeve is connected to the inner shell in a sliding mode, and the sliding wheel is connected to the inner shell in a sliding mode. The inner shell is provided with a sliding groove for the pulley sleeve to move, and the sliding wheel is rotationally connected to the pulley sleeve. One end of the elastic piece is connected with the pulley sleeve, and the other end of the elastic piece is connected with the outer shell; when the elastic piece is compressed, the pulley sleeve moves in the sliding groove. The mounting structure has the effect that the frame with the pulleys can be conveniently mounted on the aluminum profile.

Description

Technical Field

[0001] This application relates to the technical field of profile connection, and particularly relates to a pulley assembly. Background Art

[0002] As Figure 1 shown in the aluminum profile, a strip-shaped groove is provided along the length direction of the aluminum profile. The aluminum profile is obtained by hot melting and extrusion of an aluminum rod, so as to obtain aluminum materials with different cross-sectional shapes. The aluminum profile has multiple advantages such as light weight, excellent forming, high strength, corrosion resistance, long service life, and recyclability. Due to these excellent characteristics of the aluminum profile, with the large-scale infrastructure investment and the rapid progress of the industrialization process in China, the output and consumption of the entire aluminum profile industry have increased rapidly, and China has also become the world's largest aluminum profile production base and consumption market.

[0003] As Figure 2 shown in the frame, the frame is generally fixedly installed on the edge of a movable door or a movable window. In order to facilitate the opening of the movable door or the movable window, a pulley is usually rotatably connected to the frame; an installation groove is generally provided at the corner position of the frame, and the pulley is installed in the installation groove. Then the entire door frame is installed on the aluminum profile, so that the pulley on the frame is slidably connected in the strip-shaped groove of the aluminum profile.

[0004] In view of the above related technologies, since the gap between the frame and the aluminum profile is small, it is difficult to install the frame on the aluminum profile after the pulley is installed on the frame, resulting in troublesome installation and disassembly of the doors and windows, so it needs to be improved. Utility Model Content

[0005] In order to facilitate the installation of the frame with pulleys on the aluminum profile, this application provides a pulley assembly.

[0006] The pulley assembly provided by this application adopts the following technical solutions:

[0007] A pulley assembly includes an outer shell, an inner shell, a pulley sleeve, a sliding wheel, and an elastic member. The outer shell is connected to the frame, the inner shell is connected inside the outer shell, the pulley sleeve is slidably connected to the inner shell, a sliding groove for the movement of the pulley sleeve is provided on the inner shell, and the sliding wheel is rotatably connected to the pulley sleeve; one end of the elastic member is connected to the pulley sleeve, and the other end is connected to the outer shell; when the elastic member is compressed, the pulley sleeve moves in the sliding groove.

[0008] By adopting the above technical solution, during installation, first install the outer shell into the installation groove of the frame, then install the pulley sleeve on the inner shell, and then install the inner shell on the outer shell, while making the end of the elastic member away from the pulley sleeve abut against the outer shell. Then apply an external force to the sliding wheel, and the elastic member is compressed by the force, causing the pulley sleeve to move in the chute, driving the sliding wheel to move towards the inside of the inner shell. At this time, a gap is generated between the frame and the aluminum profile, so as to install the frame on the aluminum profile.

[0009] After the installation is completed, the frame abuts against the aluminum profile under its own gravity; at the same time, under the elastic force of the elastic member, the sliding sleeve moves in the direction away from the inside of the inner shell, so that the sliding wheel abuts against the strip groove of the aluminum profile, realizing the rotation of the sliding wheel in the strip groove. In this way, the installation of the sliding door or sliding window is completed. The whole installation process is convenient and fast, realizing the reduction of the installation difficulty of the operator and the improvement of the work efficiency of the personnel.

[0010] Preferably, a first accommodation cavity for accommodating the pulley sleeve and the sliding wheel is provided on the inner shell, and the chute is communicated with the first accommodation cavity.

[0011] By adopting the above technical solution, the first accommodation cavity is for accommodating the pulley sleeve and the sliding wheel, so that the two can be installed on the inner shell.

[0012] Preferably, a limiting block is further included. The limiting block is arranged in the chute and is located on the moving path of the pulley sleeve. The elastic member passes through the limiting block, and the limiting block is used for limiting the elastic member.

[0013] By adopting the above technical solution, when the elastic member is compressed, the limiting block can limit the circumferential direction of the elastic member, reducing the possibility of the elastic member being distorted, so that the elastic member can move better in a straight line direction.

[0014] Preferably, the sliding wheel is made of nylon, stainless steel or titanium alloy.

[0015] By adopting the above technical solution, these materials such as nylon, stainless steel or titanium alloy have good wear resistance and smooth sliding performance, thus improving the hand feeling when the user pushes and pulls the sliding door or sliding window.

[0016] Preferably, a fastener is connected to the outer shell. One end of the fastener passes through the outer shell and is connected to the frame.

[0017] By adopting the above technical solution, after the outer shell is clamped in the installation groove of the frame, the fastener can be used to further fix the outer shell on the frame, improving the stability of the installation of the outer shell.

[0018] Preferably, the fastener is a fastening bolt or a fastening screw.

[0019] By adopting the above technical solution, the fastening bolt or the fastening screw belongs to a detachable object, which facilitates the disassembly and replacement of the outer casing.

[0020] Preferably, the outer casing is provided with a second accommodation cavity for accommodating the inner casing, and the inner casing is snap-fitted into the outer casing; a plurality of engaging teeth are connected to the outer surface of the outer casing, and each of the engaging teeth is used for snap-fitting on the frame, and the outer casing is inserted into the installation groove of the frame.

[0021] By adopting the above technical solution, the outer casing is inserted into the installation groove to complete the connection between the outer casing and the frame. At the same time, the engaging teeth can be snap-fitted into the groove reserved on the frame to improve the firmness of the connection between the outer casing and the frame. After the outer casing is installed, the inner casing is then clamped tightly in the second accommodation cavity.

[0022] Preferably, it further includes a sealing block, the sealing block is snap-fitted on the outer casing, and a limiting groove for snap-fitting the sealing block is provided on the outer casing.

[0023] By adopting the above technical solution, after the outer casing is inserted into the installation groove, the sealing block is then clamped tightly on the outer casing to prevent the outer casing from disengaging from the frame.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] (1) By arranging an elastic member between the inner casing and the pulley sleeve, during the installation process, the pulley sleeve can slide inwardly into the inner casing, creating a gap between the frame and the aluminum profile, facilitating the installation of the sliding door or the sliding window.

[0026] (2) By arranging a limiting block, the limiting block can limit the elastic member, enabling the elastic member to move in a straight line better.

[0027] (3) By arranging a fastener, the fastener can further fix the outer casing on the frame, improving the stability of the installation of the outer casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural view of the aluminum profile in the background art;

[0029] Figure 2 is a schematic structural view of the frame in the background art;

[0030] Figure 3 is a schematic structural view of the pulley assembly in the embodiment of the present application;

[0031] Figure 4 is a schematic structural view of the pulley assembly in the embodiment of the present application with the outer casing omitted;

[0032] Figure 5 is an exploded view of the inner housing and the pulley sleeve in the embodiments of the present application;

[0033] Figure 6 is a structural view of the outer housing in the embodiments of the present application;

[0034] Figure 7 is an exploded view of the outer housing and the sealing block in the embodiments of the present application.

[0035] Reference numerals: 1, outer housing; 2, inner housing; 3, pulley sleeve; 4, sliding wheel; 5, elastic member; 6, engaging teeth; 7, fastener; 8, sealing block; 9, limiting groove; 10, second receiving cavity; 11, first receiving cavity; 12, sliding groove; 13, limiting block. Detailed implementation manners

[0036] Next, the technical solutions of the present application will be described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The present application can be embodied in various different forms and is not limited to the embodiments described herein.

[0037] In the description of the embodiments of the present application, the reference terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" are intended to mean that the specific features, structures, materials, or characteristics represented in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics represented can be combined in any one or more embodiments or examples in a suitable manner.

[0038] 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 application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above drawings are intended to cover non-exclusive inclusion.

[0039] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection; it can also be a detachable connection; or integrated; it can also be a mechanical connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0040] The following will describe in detail some embodiments of the present application with reference to the accompanying drawings. Without conflict, those skilled in the art can combine and combine different embodiments or examples represented in the present application and the features of different embodiments or examples.

[0041] An embodiment of the present application discloses a pulley assembly. Referring to Figures 3 to 5 , the pulley assembly includes an outer housing 1, an inner housing 2, a pulley sleeve 3, a sliding wheel 4, and an elastic member 5. The outer housing 1 is installed in the installation groove of the frame. In this embodiment, the outer housing 1 is connected to the frame by means of insertion, and the fixation of the two is achieved by relying on the insertion force. A plurality of teeth 6 are fixedly connected to the outer surface of the outer housing 1, and the teeth 6 are used for being clamped in the installation groove to further improve the connection stability between the outer housing 1 and the frame.

[0042] Combined with Figure 6 , at the same time, a fastener 7 is detachably connected to the outer housing 1. The fastener 7 is a fastening bolt or a fastening screw. One end of the fastener 7 passes through the outer housing 1 and is screwed on the frame to further fix the outer housing 1 without affecting the disassembly and replacement of the outer housing 1. Among them, combined with Figure 7 , a sealing block 8 is also detachably connected to the outer housing 1. The outer housing 1 is provided with a limiting groove 9 for the sealing block 8 to be clamped. After the outer housing 1 is installed in the installation groove, the sealing block 8 is clamped in the limiting groove 9 to further limit the position of the outer housing 1.

[0043] Specifically, please refer to Figure 4 and Figure 5 , a second accommodation cavity 10 is provided on the outer housing 1 for accommodating the inner housing 2. The inner housing 2 is installed on the outer housing 1 by means of clamping. A first accommodation cavity 11 for accommodating the pulley sleeve 3 and the sliding wheel 4 is provided on the inner housing 2. The pulley sleeve 3 is slidably connected to the inner housing 2; a sliding groove 12 for the pulley sleeve 3 to move is provided on the inner housing 2, and the sliding groove 12 communicates with the first accommodation cavity 11. The sliding wheel 4 is rotatably connected to the pulley sleeve 3. The elastic member 5 is a compression spring. One end of the compression spring is connected to the pulley sleeve 3, and the other end abuts against the outer housing 1. The elastic force direction of the compression spring is on the same straight line as the moving direction of the pulley sleeve 3. When the compression spring is compressed, the pulley sleeve 3 can move in the sliding groove 12.

[0044] During installation, first install the outer housing 1 into the installation groove of the frame, then install the pulley sleeve 3 on the inner housing 2, and then install the inner housing 2 on the outer housing 1, while making the end of the elastic member 5 away from the pulley sleeve 3 abut against the outer housing 1. Then apply an external force to the sliding wheel 4. The elastic member 5 is compressed by the force, so that the pulley sleeve 3 moves in the sliding groove 12, driving the sliding wheel 4 to move towards the inside of the inner housing 2. At this time, a gap is generated between the frame and the aluminum profile, so as to install the frame on the aluminum profile.

[0045] After installation, the frame abuts against the aluminum profile under its own gravity; meanwhile, under the elastic force of the elastic member 5, the sliding sleeve moves in a direction away from the interior of the inner housing 2, so that the sliding wheel 4 abuts against the strip groove of the aluminum profile, realizing the rotation of the sliding wheel 4 in the strip groove. In this way, the installation of the sliding door or sliding window is completed. The whole installation process is convenient and fast, reducing the installation difficulty of the operator and improving the work efficiency of the personnel. In this embodiment, the sliding wheel 4 is made of nylon, stainless steel or titanium alloy. These materials have good wear resistance and smooth sliding performance, thus improving the hand feeling when the user pushes and pulls the sliding door or sliding window.

[0046] In addition, referring to Figure 5 , a limiting block 13 is further installed on the inner housing 2. The limiting block 13 is located in the sliding groove 12 and is on the moving path of the pulley sleeve 3. The compression spring passes through the limiting block 13, and the limiting block 13 is used to limit the circumferential direction of the compression spring. When the elastic member 5 is compressed, the limiting block 13 can limit the circumferential direction of the elastic member 5, reducing the possibility of the elastic member 5 being distorted, so that the elastic member 5 can move better in a straight line direction.

[0047] The implementation principle of a pulley assembly in an embodiment of the present application is as follows: during installation, first insert the outer housing 1 into the installation groove of the frame, and further lock the outer housing 1 using the fastener 7. Then install the pulley sleeve 3 on the inner housing 2, and then install the inner housing 2 on the outer housing 1, while making one end of the elastic member 5 away from the pulley sleeve 3 abut against the outer housing 1.

[0048] Then apply an external force to the sliding wheel 4, and the elastic member 5 is compressed by the force, so that the pulley sleeve 3 moves in the sliding groove 12, driving the sliding wheel 4 to move towards the interior of the inner housing 2. At this time, a gap is generated between the frame and the aluminum profile, so as to install the frame on the aluminum profile.

[0049] After installation, the frame abuts against the aluminum profile under its own gravity; meanwhile, under the elastic force of the elastic member 5, the sliding sleeve moves in a direction away from the interior of the inner housing 2, so that the sliding wheel 4 abuts against the strip groove of the aluminum profile, realizing the rotation of the sliding wheel 4 in the strip groove.

[0050] The above are all preferred embodiments of the present application. Without restricting the protection scope of the present application accordingly, therefore: all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A pulley assembly, characterized in that: The invention comprises an outer shell (1), an inner shell (2), a pulley sleeve (3), a sliding wheel (4) and an elastic member (5), wherein the outer shell (1) is connected to a frame, the inner shell (2) is connected inside the outer shell (1), the pulley sleeve (3) is slidingly connected to the inner shell (2), the inner shell (2) is provided with a sliding groove (12) for the pulley sleeve (3) to move, and the sliding wheel (4) is rotatably connected to the pulley sleeve (3); one end of the elastic member (5) is connected to the pulley sleeve (3), and the other end is connected to the outer shell (1); when the elastic member (5) is compressed, the pulley sleeve (3) moves in the sliding groove (12).

2. A pulley assembly according to claim 1, characterized in that: The inner shell (2) is provided with a first accommodating chamber (11) for accommodating the pulley sleeve (3) and the sliding wheel (4), and the sliding groove (12) is connected to the first accommodating chamber (11).

3. A pulley assembly according to claim 2, characterized in that: It also comprises a limit block (13), the limit block (13) being arranged in the slide groove (12) and located on the moving path of the pulley sleeve (3), the elastic member (5) passing through the limit block (13), and the limit block (13) being used to limit the elastic member (5).

4. A pulley assembly according to claim 1, characterized in that: The sliding wheel (4) is made of nylon, stainless steel or titanium alloy.

5. A pulley assembly according to claim 1, characterized in that: A fastener (7) is connected to the outer shell (1), and one end of the fastener (7) passes through the outer shell (1) and is connected to the frame.

6. A pulley assembly according to claim 5, characterized in that: The fastener (7) is a fastening bolt or a fastening screw.

7. A pulley assembly according to claim 1, characterized in that: The outer shell (1) is provided with a second accommodating cavity (10) for accommodating the inner shell (2), and the inner shell (2) is snap-fitted into the outer shell (1); the outer surface of the outer shell (1) is connected with a plurality of snap teeth (6), each of the snap teeth (6) being used for snapping onto a frame, and the outer shell (1) is inserted into a mounting groove of the frame.

8. A pulley assembly according to claim 7, characterized in that: It also comprises a sealing block (8), the sealing block (8) being clamped on the outer shell (1), and the outer shell (1) is provided with a limiting groove (9) for clamping the sealing block (8).

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