Plastic pulley assembly structural member

Abstract

The utility model discloses a kind of plastic pulley assembly structural members, relate to the field of plastic pulley.The utility model includes mounting bracket, the inner side of mounting bracket is movably provided with roller, and the inner side of mounting bracket is provided with friction resistance part between roller, the friction resistance part is used to interval mounting bracket and roller, and reduce the contact area of mounting bracket and roller, the utility model is set between mounting bracket and roller by setting friction resistance part, effectively interval both, reduce contact area, avoid roller and mounting bracket direct friction, three forms of friction resistance part, first friction resistance ring that is integrally injection molded with mounting bracket, second friction resistance ring that is integrally injection molded with roller, third friction resistance ring that is inlaid in mounting groove by mounting piece, can all stably play interval effect, prevent roller from appearing abrasion due to long-term large-area friction, prolong the service life of roller and entire assembly.

Description

Technical Field

[0001] This utility model relates to the field of plastic pulleys, specifically a plastic pulley assembly structure. Background Technology

[0002] Plastic pulleys are made primarily of plastic and are widely used in everyday and industrial applications. Common materials include nylon, polyester, ABS plastic, and polyurethane. Nylon pulleys are high-strength, wear-resistant, and self-lubricating, making them suitable for industrial equipment and doors and windows. Polyester is heat-resistant and suitable for high-temperature environments. ABS plastic is hard and inexpensive, and is often used in home furnishings such as curtains. Polyurethane has a low coefficient of friction and high strength, and is commonly used in logistics and medical equipment.

[0003] Currently, during the use of plastic pulleys, there is direct friction between the pulley and the mounting bracket. The mounting contact area between traditional pulleys and the mounting bracket is relatively large, which causes the pulley to wear out gradually over time, reducing its service life. In view of this, the inventors urgently need to design a pulley mounting component to reduce the contact area between the traditional pulley and the mounting bracket and improve the service life of the pulley component. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a plastic pulley assembly structure to solve the technical problem of severe core wear in the installation and use of traditional plastic pulleys.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a plastic pulley assembly structure, including a mounting frame, a roller is movably disposed on the inner side of the mounting frame, and a friction-resistant part is provided between the inner side of the mounting frame and the roller. The friction-resistant part is used to separate the mounting frame and the roller and reduce the contact area between the mounting frame and the roller.

[0006] By adopting the above technical solution, a friction-resistant part is set between the inner side of the mounting frame and the roller, which directly solves the core problem of direct friction and large contact area between the mounting frame and the roller in traditional plastic pulley assemblies. The friction-resistant part can effectively separate the mounting frame and the roller, changing the direct contact between the two into indirect contact through the friction-resistant part, reducing the contact area between the mounting frame and the roller, thereby avoiding the roller from rapid wear due to long-term large-area friction, and laying the foundation for extending the service life of the roller.

[0007] Furthermore, the friction-resistant part includes two sets of first friction-resistant rings. The first friction-resistant rings are fixedly connected to the inner wall of the mounting bracket, and one side of the first friction-resistant ring is in contact with the central axis of both sides of the roller. The first friction-resistant rings and the mounting bracket are integrally injection molded.

[0008] By adopting the above technical solution, the integrated injection molding structure can ensure a firm connection between the first friction-resistant ring and the mounting bracket, avoiding the problem of easy loosening and displacement of friction-resistant components in traditional split assembly. At the same time, it eliminates the need for separate installation of the first friction-resistant ring, simplifies the production process, reduces assembly errors, and ensures that the first friction-resistant ring remains relatively fixed to the mounting bracket during long-term use, stably performing its spacing function.

[0009] Furthermore, the friction-resistant part also includes a second friction-resistant ring, which is fixed on both sides of the roller and is arranged coaxially with the roller. The second friction-resistant ring is integrally injection molded with the roller.

[0010] By adopting the above technical solution, the coaxial setting can ensure that the second friction-resistant ring and the roller rotate synchronously, avoiding additional friction caused by asynchrony between the two. The one-piece injection molding process makes the second friction-resistant ring and the roller form a stable whole, which will not fall off or shift during the long-term rotation of the roller, ensuring that the spacing effect of the friction-resistant part continues to be effective.

[0011] Furthermore, the friction-resistant part also includes two sets of third friction-resistant rings. A mounting plate is fixedly provided on one side of the third friction-resistant ring. The mounting plate is movably embedded in the mounting grooves formed on both sides of the mounting frame, and the third friction-resistant ring is arranged coaxially with the roller.

[0012] By adopting the above technical solution, the embedded installation method makes the third friction-resistant ring detachable. When the third friction-resistant ring is severely worn, there is no need to disassemble the entire mounting bracket or roller. The third friction-resistant ring can be replaced simply by removing the mounting piece from the mounting slot, which greatly simplifies the maintenance process and reduces maintenance costs. At the same time, the mounting slot can position the mounting piece to ensure that the third friction-resistant ring is accurately aligned with the roller after installation.

[0013] Furthermore, the first friction-resistant ring, the second friction-resistant ring, the third friction-resistant ring, and the roller are all provided with through grooves for the self-locking pin to pass through and install.

[0014] By adopting the above technical solution, it is ensured that the axes of each component are aligned during installation, avoiding problems such as roller jamming or uneven contact between the friction rings and rollers due to axis misalignment. This ensures smooth component operation, reduces additional wear caused by assembly deviations, and provides a unified installation channel for the self-locking pin, allowing the self-locking pin to pass through all core components at once, achieving rapid positioning and fixing of each component and simplifying the assembly process.

[0015] Furthermore, the self-locking pin is a plastic pin with a gap in the middle for compression deformation, so that the self-locking pin can be inserted and then elastically deformed to achieve self-locking installation with the mounting bracket or mounting plate.

[0016] By adopting the above technical solutions, the overall weight of the entire plastic pulley assembly can be reduced, and it also has good corrosion resistance, avoiding the problem of metal pins easily rusting and causing assembly jamming or accelerated wear. At the same time, the plastic material has good toughness, which can better adapt to the plastic material characteristics of the assembly and reduce wear caused by contact between different materials.

[0017] Furthermore, a clearance groove for hook installation is provided on one side of the mounting bracket, a slot is provided on the upper inner wall of the mounting bracket, and a locking block is fixedly provided at the bottom of the hook. The hook is engaged and connected to the mounting bracket through the slot and the locking block.

[0018] By adopting the above technical solution, the clearance groove can provide sufficient space for the installation of the hook, avoid interference between the hook and the mounting frame during installation, and ensure that the hook can be installed smoothly. At the same time, the slot opened on the upper part of the inner wall of the mounting frame cooperates with the locking block fixed at the bottom of the hook. The hook and the mounting frame are fixed by the locking block and the locking slot. This locking structure is simple and quick to operate, and greatly improves the installation efficiency of the hook.

[0019] In summary, the present invention has the following main advantages: This invention effectively separates the roller and the mounting bracket by setting a friction-resistant part between them, reducing the contact area and preventing direct friction between the roller and the mounting bracket. The three forms of the friction-resistant part—a first friction-resistant ring integrally injection-molded with the mounting bracket, a second friction-resistant ring integrally injection-molded with the roller, and a third friction-resistant ring embedded in the mounting groove through a mounting plate—all stably perform the spacing function, preventing the roller from wearing due to long-term large-area friction and extending the service life of the roller and the entire assembly. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a cross-sectional structural diagram of another embodiment of the present invention; Figure 4 This is a cross-sectional structural diagram of the third embodiment of the present invention.

[0021] In the diagram: 1. Mounting bracket; 2. Clearance groove; 3. Hook; 4. Locking block; 5. Locking groove; 6. Roller; 7. Friction-resistant part; 701. First friction-resistant ring; 702. Second friction-resistant ring; 703. Mounting plate; 704. Mounting groove; 705. Third friction-resistant ring; 706. Through groove; 8. Self-locking pin. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] Example 1: A plastic pulley assembly structural component, such as Figure 1-4 As shown, the assembly includes a mounting frame 1, with a roller 6 movably mounted on the inner side of the mounting frame 1. A friction-resistant part 7 is provided between the inner side of the mounting frame 1 and the roller 6. The friction-resistant part 7 is used to separate the mounting frame 1 and the roller 6 and reduce the contact area between the mounting frame 1 and the roller 6. The friction-resistant part 7 directly solves the core problem of direct friction and large contact area between the mounting frame and the roller in traditional plastic pulley assemblies. The friction-resistant part 7 can effectively separate the mounting frame 1 and the roller 6, changing the direct contact between the two to indirect contact through the friction-resistant part 7, reducing the contact area between the mounting frame 1 and the roller 6, thereby avoiding rapid wear of the roller 6 due to long-term large-area friction, laying the foundation for extending the service life of the roller 6. At the same time, this structural design does not change the basic assembly form of the roller 6 movably mounted on the inner side of the mounting frame 1, and will not affect the normal rotation performance of the roller 6 within the mounting frame 1, ensuring that the plastic pulley assembly can maintain its original function.

[0024] See Figure 1 , Figure 2 The friction-resistant part 7 includes two sets of first friction-resistant rings 701. The first friction-resistant rings 701 are fixedly connected to the inner wall of the mounting bracket 1, and one side of the first friction-resistant rings 701 contacts the central axes of both sides of the roller 6. The first friction-resistant rings 701 and the mounting bracket 1 are integrally injection molded. The integral injection molding structure can ensure a firm connection between the first friction-resistant rings 701 and the mounting bracket 1, avoiding the problem of easy loosening and displacement of friction-resistant parts in traditional separate assembly. At the same time, it eliminates the process of separately installing the first friction-resistant rings 701, simplifying the production process and reducing costs. Low assembly error ensures that the first friction-resistant ring 701 remains relatively fixed to the mounting bracket 1 during long-term use, stably fulfilling its spacing function. At the same time, one side of the first friction-resistant ring 701 contacts the central axis of both sides of the roller 6. This contact position precisely corresponds to the rotation center of the roller 6, which can minimize the contact area between the first friction-resistant ring 701 and the roller 6, reduce friction loss, and ensure the stability of the roller 6 during rotation. It also prevents the roller 6 from jamming or shifting due to contact position misalignment, ensuring smooth operation of the component.

[0025] Example 2: See Figure 1 , Figure 3The friction-resistant part 7 also includes a second friction-resistant ring 702. The second friction-resistant ring 702 is fixed to both sides of the roller 6 and is arranged coaxially with the roller 6. The second friction-resistant ring 702 and the roller 6 are integrally injection molded. The coaxial arrangement ensures that the second friction-resistant ring 702 and the roller 6 rotate synchronously, avoiding additional friction caused by asynchrony. The integral injection molding process makes the second friction-resistant ring 702 and the roller 6 form a stable whole, which will not fall off or shift during the long-term rotation of the roller 6, ensuring that the spacing effect of the friction-resistant part 7 remains effective. At the same time, the second friction-resistant ring 702 is fixed to both sides of the roller 6, which can accurately form a gap with the inner side of the mounting bracket 1, avoiding direct contact between the roller 6 body and the mounting bracket 1, reducing the wear of the roller 6 body from the source. When the second friction-resistant ring 702 has a certain wear, only the roller 6 needs to be replaced to simultaneously update the friction-resistant structure, without the need to replace the friction-resistant parts separately.

[0026] Example 3: See Figure 1 , Figure 4 The friction-resistant part 7 also includes two sets of third friction-resistant rings 705. A mounting plate 703 is fixedly mounted on one side of each third friction-resistant ring 705. The mounting plate 703 is movably embedded in the mounting grooves 704 formed on both sides of the mounting frame 1. The third friction-resistant ring 705 is coaxially aligned with the roller 6. This movably embedded mounting method allows the third friction-resistant ring 705 to be detachable. When the third friction-resistant ring 705 is severely worn, it is not necessary to disassemble the entire mounting frame 1 or the roller 6; simply remove the mounting plate 703 from the mounting groove 704 to replace the third friction-resistant ring 705. This significantly simplifies the maintenance process and reduces maintenance costs. Simultaneously, the mounting groove 704 can position the mounting plate 703, ensuring precise alignment between the third friction-resistant ring 705 and the roller 6 after installation. Furthermore, the coaxial alignment of the third friction-resistant ring 705 and the roller 6 ensures stable contact between the roller 6 and the third friction-resistant ring 705 during rotation, preventing additional friction or jamming.

[0027] See Figure 1 , Figure 2 , Figure 3 , Figure 4The first friction-resistant ring 701, the second friction-resistant ring 702, the third friction-resistant ring 705, and the roller 6 all have through grooves 706 for the self-locking pin 8 to pass through and install. This ensures that the axes of each component are aligned during installation, avoiding problems such as roller 6 getting stuck or uneven contact between the friction-resistant rings and roller 6 due to axis misalignment. This ensures smooth component operation and reduces additional wear caused by assembly deviations. At the same time, the through grooves 706 provide a unified installation channel for the self-locking pin 8, allowing it to pass through all core components at once, achieving quick positioning and fixing of each component and simplifying the assembly process. Furthermore, the through grooves 706 allow the self-locking pin 8 to pass through the core rotating component of the entire assembly, forming a stable assembly structure. This avoids the problems of loosening and displacement of components in traditional assembly, ensuring the relative position between the first friction-resistant ring 701, the second friction-resistant ring 702, or the third friction-resistant ring 705 and the roller 6 is stable, continuously playing the role of reducing friction through spacing.

[0028] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The self-locking pin 8 is a plastic pin with a gap in the middle for compression deformation. This allows the self-locking pin 8 to achieve self-locking installation with the mounting bracket 1 or mounting plate 703 through elastic deformation after insertion. This reduces the overall weight of the plastic pulley assembly and also has good corrosion resistance, avoiding the problems of assembly jamming or accelerated wear caused by the easy rusting of metal pins. At the same time, the good toughness of the plastic material can better adapt to the plastic material characteristics of the components and reduce wear caused by the contact of different materials. In addition, the gap in the middle of the self-locking pin 8 for compression deformation allows the self-locking pin 8 to smoothly pass through the through groove 706 of each component through compression deformation during insertion and installation. After passing through, it can return to its original shape through elastic deformation, achieving self-locking installation with the mounting bracket 1 or mounting plate 703. There is no need to use additional screws, clips or other fasteners, which greatly simplifies the assembly process and improves assembly efficiency.

[0029] See Figure 1 , Figure 2 , Figure 3 , Figure 4The mounting bracket 1 has a clearance groove 2 on one side for the installation of the hook 3. The upper inner wall of the mounting bracket 1 has a slot 5. The bottom end of the hook 3 is fixedly provided with a locking block 4. The hook 3 is engaged with the mounting bracket 1 through the slot 5 and the locking block 4. The clearance groove 2 provides sufficient space for the installation of the hook 3, avoiding interference between the hook 3 and the mounting bracket 1 during installation, and ensuring that the hook 3 can be installed smoothly. At the same time, the slot 5 on the upper inner wall of the mounting bracket 1 cooperates with the locking block 4 fixed at the bottom end of the hook 3. The hook 3 is fixed to the mounting bracket 1 through the engagement of the locking block 4 and the slot 5. This engagement structure is simple and quick to operate, greatly improving the installation efficiency of the hook 3. At the same time, the engagement connection method also facilitates the subsequent disassembly and replacement of the hook 3. When the hook 3 is worn or needs to be replaced with a different type of hook 3, the locking block 4 can be easily removed from the slot 5 with a little force, realizing the quick disassembly of the hook 3 without damaging the mounting bracket 1 or other components, thus ensuring the integrity of the mounting bracket 1.

[0030] The implementation principle of this embodiment is as follows: First, a hook 3 is installed at the clearance groove 2 on one side of the mounting frame 1. The hook 3 is fixed to the mounting frame 1 by the locking block 4 at the bottom end of the hook 3 engaging with the locking groove 5 on the upper part of the inner wall of the mounting frame 1. Then, a roller 6 is installed on the inner side of the mounting frame 1, and a friction-resistant part 7 is provided. If the first friction-resistant ring 701 is used, it is based on the integral injection molding structure of the ring and the mounting bracket 1, so that one side of it is attached to the central axis of both sides of the roller 6. If a second friction-resistant ring 702 is used, it is placed synchronously with the roller 6 by means of its integral injection molding structure with the roller 6; If a third friction-resistant ring 705 is used, its mounting plate 703 is embedded in the mounting grooves 704 on both sides of the mounting frame 1 to ensure that the friction-resistant part 7 effectively separates the mounting frame 1 from the roller 6. Next, the self-locking pin 8 is passed through the first friction-resistant ring 701, the second friction-resistant ring 702 or the third friction-resistant ring 705, and the through groove 706 at the axis of the roller 6. The gap in the middle of the self-locking pin 8 is used to compress and deform it, thereby forming a self-lock with the mounting bracket 1 or the mounting plate 703 to fix the entire assembly. When the assembly is in use, the friction-resistant part 7 continuously reduces the contact area between the mounting bracket 1 and the roller 6, reducing the direct friction between the two, and ultimately achieving the purpose of improving service life.

[0031] In this embodiment, the pulley and the friction-resistant part can be made of nylon.

[0032] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A plastic pulley assembly structure, characterized in that: The device includes a mounting frame (1), on which a roller (6) is movably disposed. A friction-resistant part (7) is disposed between the inner side of the mounting frame (1) and the roller (6). The friction-resistant part (7) is used to separate the mounting frame (1) and the roller (6) and reduce the contact area between the mounting frame (1) and the roller (6). The friction-resistant part (7) includes two sets of first friction-resistant rings (701). The first friction-resistant rings (701) are fixedly connected to the inner wall of the mounting bracket (1), and one side of the first friction-resistant rings (701) is in contact with the central axis of both sides of the roller (6). The first friction-resistant rings (701) and the mounting bracket (1) are integrally injection molded.

2. The plastic pulley assembly structure according to claim 1, characterized in that: The friction-resistant part (7) also includes a second friction-resistant ring (702), which is fixed on both sides of the roller (6) and is arranged coaxially with the roller (6). The second friction-resistant ring (702) and the roller (6) are integrally injection molded.

3. The plastic pulley assembly structure according to claim 1, characterized in that: The friction-resistant part (7) also includes two sets of third friction-resistant rings (705). A mounting plate (703) is fixedly provided on one side of the third friction-resistant ring (705). The mounting plate (703) is movably embedded in the mounting groove (704) formed on both sides of the mounting frame (1). The third friction-resistant ring (705) and the roller (6) are arranged on the same axis.

4. The plastic pulley assembly structure according to claim 1, characterized in that: The first friction-resistant ring (701), the second friction-resistant ring (702), the third friction-resistant ring (705) and the roller (6) are all provided with through grooves (706) for the self-locking pin (8) to pass through and be installed.

5. The plastic pulley assembly structure according to claim 4, characterized in that: The self-locking pin (8) is a plastic pin with a gap in the middle for compression deformation, so that the self-locking pin (8) can be inserted and then achieve self-locking installation with the mounting bracket (1) or mounting plate (703) through elastic deformation.

6. The plastic pulley assembly structure according to claim 1, characterized in that: The mounting bracket (1) has a clearance groove (2) on one side for the installation of the hook (3), and a slot (5) is provided on the upper part of the inner wall of the mounting bracket (1). A locking block (4) is fixedly provided at the bottom of the hook (3). The hook (3) is engaged with the mounting bracket (1) through the slot (5) and the locking block (4).

Images