Silent pulley

Abstract

The utility model relates to the technical field of pulleys, in particular to a mute pulley which comprises a pulley frame, two sides of the pulley frame are movably connected with a pulley set structure through connecting pieces, a pulley seat portion is rotatably connected above the pulley frame, elastic pads are arranged between the connecting pieces and the pulley set structure, and the elastic pads are arranged between the connecting pieces and the pulley set structure. The contact area with the wheel set is reduced through the wavy arrangement, the rotation of the wheel set cannot be influenced by tight riveting, and when the wheel set shakes axially, the spring washer can effectively prevent noise generated by the axial shaking of the wheel set, so that the product has a mute effect.

Description

Technical Field

[0001] The utility model relates to the technical field of pulleys, in particular to a silent pulley. Background Art

[0002] A pulley is a small wheel with a groove around its periphery that can rotate around an axis. It is a simple mechanical structure and is now commonly used in luggage and cargo trailers to facilitate the transportation of cargo. The publication number is "CN203331722U" and is a pulley for luggage. The luggage has a case shell and a plurality of wheel seats integrally formed at the corners of the case shell. Each wheel seat has a bottom wall and two adjacent side walls. The pulley is mounted on the wheel seat, and the pulley includes a wheel frame, a tire assembly and a screw. The wheel frame includes a columnar wheel frame and a wheel arm extending integrally from the outer edge of the wheel frame, and the wheel frame is rotatably connected to the two ends of the wheel seat. The tire assembly includes a first wheel group and a second wheel group, and the first and second wheel groups are respectively pivoted on both sides of the wheel arm, and the screw rod is penetrated through the wheel frame and the wheel seat portion at the corner of the box shell, so that the wheel frame can rotate relative to the wheel seat portion along a rotation axis passing through the longitudinal axis of the screw rod, and the rotation axis is adjacent to the bending part of the two side walls of the wheel seat portion. The pulley assembly process for bags of the utility model is streamlined and the structure is simplified, which is easy to disassemble and assemble, but the technology has no limit on the axial direction of the tire, and it is easy to cause the tire to shake and produce noise when rolling, so the technology still has a certain room for modification. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a method for solving the above-mentioned deficiencies in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a silent pulley, comprising a wheel frame, wherein both sides of the wheel frame are rotatably connected to a wheel set structure by setting connecting pieces, and a wheel seat is rotatably connected to the top of the wheel frame, characterized in that spring washers are provided between the connecting pieces and the wheel set structure.

[0005] By adopting the above technical solution, a spring washer is installed between the wheel set structure and the connecting piece. The setting of the spring washer reduces the axial shaking of the wheel set along the connecting piece, thereby reducing the noise caused by the shaking, and greatly enhancing the quiet effect of the product.

[0006] A further configuration of the utility model is that the surface of the spring washer is wavy.

[0007] The above technical solution is adopted: the spring washer is provided with a wavy surface. The spring washer itself is different from the ordinary gaskets on the market. The gasket can be used to play a certain role in limiting the shaking effect, but the gasket is riveted too loosely and the anti-shake effect is not good. The riveting too tight will cause the wheel set to stop rotating. The spring washer itself has a certain elasticity. The wavy surface of the spring washer reduces the contact area with the wheel set structure. Riveting will not affect the rotation of the wheel set, which greatly reduces the noise generated by shaking and collision, and makes the product have a good quiet effect.

[0008] A further configuration of the utility model is that a dustproof wheel cover is arranged at one end of the wheel set structure away from the wheel frame by arranging a quick-release structure.

[0009] By adopting the above technical solution, the provision of the dustproof wheel cover can prevent dust and rainwater from entering the wheel frame to a certain extent, thereby protecting the internal structure of the wheel frame and making the product more stable.

[0010] A further configuration of the utility model is that the wheel set structure includes a wheel frame, the wheel frame is provided with an installation groove for tire skin installation, the center of the wheel frame is provided with a connecting groove for a connecting piece to pass through, the wheel frame is provided with an abutment block on the side facing the wheel frame, the wheel frame is provided with a connecting piece hole, the connecting piece is passed through the connecting groove and the connecting piece hole, so that the wheel frame is rotatably connected to both sides of the wheel frame.

[0011] The above technical solution is adopted: the connecting piece is passed through the connecting groove to connect with the wheel frame, the wheel frame is abutted and limited with the wheel frame through the abutment block, and the wheel frame is provided with a mounting groove to connect with the tire skin. This connection method is convenient and fast.

[0012] The utility model is further configured as follows: the quick-release structure comprises: the dustproof wheel cover is provided with a plurality of snap fasteners, the wheel frame is provided with a plurality of slots, and the dustproof wheel cover is snap-connected with the wheel frame through the snap fasteners and the slots for quick release.

[0013] By adopting the above technical solution, a card slot is provided on the wheel frame, and the dustproof wheel cover is connected to the card slot through a snap fastener. The connection method is simple and the assembly and disassembly are quick and convenient.

[0014] A further arrangement of the utility model is: a connecting rod is provided at one end of the wheel frame facing the wheel seat, the connecting rod is provided with a connecting cavity for the rotating shaft to be embedded, an axial rotating rod is provided on the wheel frame located in the connecting cavity, an embedded groove is provided on the rotating shaft located at the rotating rod, the rotating shaft is limited in rotation by the embedded groove, an installation cavity is provided at the bottom end of the wheel seat, a connecting through hole is provided in the installation cavity, a limiting groove is also provided in the installation cavity, a limiting block is provided on the rotating shaft, an end of the rotating shaft away from the embedded groove is penetrated in the connecting through hole, and the wheel seat is limited in position by abutting against the limiting block through the limiting groove.

[0015] The above technical solution is adopted: the wheel frame is connected to the transmission shaft through a connecting rod, the wheel frame has a rotating rod in the connecting cavity, the connecting rod is provided with an embedded groove, the connecting rod rotates in the rotating rod through the embedded groove, the end of the connecting rod away from the embedded groove is connected to the connecting hole in the mounting cavity at the bottom end of the wheel seat, and is limitedly connected with the limit block through the limit groove, so that the entire pulley has a steering function.

[0016] A further configuration of the utility model is that: the wheel frame is provided with an abutment groove for the spring washer to abut on one side facing the dustproof wheel cover, the connecting piece is a double-sided rivet, and abutment surfaces are provided at both ends of the connecting piece, and the spring washer is fixed to the abutment groove by abutting on the abutment surface of the connecting piece.

[0017] The above technical solution is adopted: the spring washer abuts against the wheel frame through the abutment groove, and is fixed in the abutment groove through the abutment surface of the connecting piece; the wheel frame is abutted by the abutment block at one end facing the wheel frame, and the abutment surface and the wheel frame are abutted by the spring washer. The wave shape of the spring washer effectively prevents the axial jitter generated when the wheel set rolls.

[0018] A further configuration of the utility model is that the spring pad is made of nylon plastic.

[0019] The above technical solution is adopted: the spring washer is made of nylon plastic. Nylon plastic has strong toughness and can effectively prevent the shaking of the wheel hub. At the same time, the surface of nylon plastic is very smooth, which can greatly reduce the friction coefficient between the wheel set. Riveting will not affect the normal rotation of the wheel set. Nylon plastic itself has wear-resistant properties, which greatly increases the service life of the product, so that the spring washer can still maintain its original strength under high-intensity friction.

[0020] The utility model is further configured as follows: a connecting baffle is arranged around the wheel seat, a connecting block is arranged at the upper end of the wheel seat, an upper protrusion is arranged above the connecting block, and a slot is formed between the upper protrusion and the connecting baffle.

[0021] The above technical solution is adopted: a connecting baffle and a connecting block are installed on the upper end of the wheel seat, and a slot for connecting other products is formed between the protrusion arranged above the connecting block and the connecting baffle, which is suitable for connecting most products with jacks.

[0022] The beneficial effects of the utility model are as follows: a spring washer is installed between the connecting piece and the wheel set structure, and the contact area with the wheel set is reduced through the wave-shaped setting. Riveting will not affect the rotation of the wheel set. When the wheel set generates axial vibration, the spring washer can effectively prevent the noise generated by the axial vibration of the wheel set, so that the product has a silent effect.

[0023] The utility model is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1This is a schematic diagram of the structure of the utility model.

[0025] Figure 2 This is a practical structural explosion diagram.

[0026] Figure 3 This is a schematic diagram of the wheel seat structure of the present invention.

[0027] Figure 4 This is a cross-sectional view of a practical wheel frame.

[0028] Figure 5 A side view of the wheel frame of this utility model.

[0029] Figure 6 This is a front view of the wheel frame of this utility model.

[0030] Figure 7 This is a practical spring washer structure diagram.

[0031] Label annotation: 1-wheel frame, 2-connecting part, 3-wheel seat, 4-rotating shaft, 5-spring washer, 6-wheel frame, 7-tire, 8-dustproof wheel cover, 9-abutment groove, 101-connecting part hole, 102-connecting rod, 103-connecting cavity, 201-abutment surface, 301-installing cavity, 302-connecting through hole, 303-limiting groove, 304-connecting baffle, 305-connecting block, 306-bump, 307-slot, 401-embedded groove, 402-limiting block, 601-installing groove, 602-connecting groove, 603-abutment block, 604-card slot, 801-fastener. DETAILED DESCRIPTION

[0032] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0033] like Figure 1-7A silent pulley shown in the figure comprises a wheel frame 1, and the two sides of the wheel frame 1 are movably connected with a wheel set structure by setting a connecting piece 2, and a wheel seat part 3 is rotatably connected to the upper part of the wheel frame 1, characterized in that: a spring washer 5 is provided between the connecting piece 2 and the wheel set structure, and a spring washer 5 is installed between the wheel set structure and the connecting piece 2. The setting of the spring washer 5 reduces the axial shaking of the wheel set along the connecting piece 2, thereby reducing the noise caused by the shaking, greatly enhancing the silent effect of the product, and the surface of the spring washer 5 is wavy, and the spring washer 5 is provided with a spring washer 5 The surface of the wavy, the spring washer 5 itself is different from the ordinary gasket on the market, and the gasket can be used as In order to achieve a certain limit shaking effect, but the rivet of the gasket is too loose to have a poor anti-shake effect, and the rivet is too tight to cause the wheel set to not rotate. The spring washer 5 itself has a certain elasticity. The surface of the spring washer 5 is wavy to reduce the contact area with the wheel set structure. Riveting will not affect the rotation of the wheel set, which greatly reduces the noise generated by shaking and collision, so that the product has a good mute effect. The wheel set structure is far away from the wheel frame 1. The end is provided with a dustproof wheel cover 8 through a quick-release structure. The setting of the dustproof wheel cover 8 can protect dust and rainwater from entering the wheel frame 6 to a certain extent, protect the internal structure of the wheel frame 6, and make the product more stable.

[0034] The quick-release structure includes: the dustproof wheel cover 8 is provided with a plurality of snap-fit ​​parts 801, and the wheel frame 6 is provided with a plurality of slots 604. The dustproof wheel cover 8 is quickly connected with the wheel frame 6 through the snap-fit ​​parts 801 and the slots 604. The wheel frame 6 is provided with slots 604, and the dustproof wheel cover 8 is connected with the slots 604 through the snap-fit ​​parts 801. The connection method is simple, quick and convenient to disassemble and assemble. The wheel frame 1 is provided with a connecting rod 102 at one end facing the wheel seat 3, and the connecting rod 102 is provided with a connecting cavity 103 for the rotating shaft 4 to be embedded. The wheel frame is provided with an axial rotating rod in the connecting cavity 103, and the rotating shaft 4 is provided with an embedded groove 401 at the rotating rod. The rotating shaft 4 is limited to rotate by the embedded groove 401, and the bottom end of the wheel seat 3 is provided with an installation cavity 30 1, a connecting through hole 302 is provided in the installation cavity 301, and a limiting groove 303 is also provided in the installation cavity 301, and a limiting block 402 is provided in the rotating shaft 4, and one end of the rotating shaft 4 away from the embedded groove 401 is penetrated in the connecting through hole 302, and the wheel seat 3 is limited by the limiting groove 303 and the limiting block 402, and the wheel frame 1 is connected with the transmission shaft through the connecting rod 102, and the wheel frame has a rotating rod in the connecting cavity 103, and the connecting rod 102 is provided with an embedded groove 401, and the connecting rod 102 rotates in the rotating rod through the embedded groove 401, and the end of the connecting rod 102 away from the embedded groove 401 is connected to the connecting hole in the installation cavity 301 at the bottom end of the wheel seat 3, and is limitedly connected with the limiting block 402 through the limiting groove 303, so that the whole pulley has a steering function, and the The wheel frame 6 is provided with an abutment groove 9 for the spring washer 5 to abut on the side facing the dustproof wheel cover 8. The connecting piece 2 is a double-sided rivet, and both ends of the double-sided rivet are provided with an abutment surface 201. The spring washer 5 is abutted and fixed to the abutment groove 9 by the abutment surface 201 of the double-sided rivet. The spring washer 5 abuts the wheel frame 6 through the abutment groove 9, and is abutted and fixed in the abutment groove 9 by the abutment surface 201 of the connecting piece 2. The wheel frame 6 is abutted by the abutment block 603 at one end facing the wheel frame 1, and the abutment surface 201 abuts against the wheel frame 6 through the spring washer 5. The wavy shape of the spring washer 5 effectively prevents the axial shaking generated when the wheel set rolls. The spring washer 5 is made of nylon plastic. The nylon plastic has strong toughness and can effectively prevent the shaking of the wheel hub. At the same time, the surface of the nylon plastic is very It is very smooth, which can greatly reduce the friction coefficient between the wheel set, and riveting will not affect the normal rotation of the wheel set. Nylon plastic itself has the property of wear resistance, which greatly increases the service life of the product, so that the spring pad 5 can still maintain its original strength under high-intensity friction. The wheel seat 3 is surrounded by a connecting baffle 304, and a connecting block 305 is provided on the upper end of the wheel seat 3. An upper protrusion 306 is provided above the connecting block 305, and a slot 307 is formed between the upper protrusion 306 and the connecting baffle 304. A connecting baffle 304 and a connecting block 305 are installed on the upper end of the wheel seat 3, and a slot 307 that can be connected to other products is formed between the protrusion 306 arranged above the connecting block 305 and the connecting baffle 304, which is suitable for connecting most products with jacks.

[0035] like Figure 5-6 A silent pulley is shown, and the wheel assembly structure includes a wheel frame 6, and the wheel frame 6 is provided with a mounting groove 601 for installing a tire skin 7. A connecting groove 602 for the connecting member 2 to pass through is provided in the center of the first wheel frame 6. The wheel frame 6 is provided with an abutment block 603 on the side facing the wheel frame 1, and the wheel frame is provided with a connecting member hole 101. The connecting member is passed through the connecting groove 602 and the connecting member hole 101, so that the wheel frame 6 is rotatably connected to both sides of the wheel frame 1, and the connecting member 2 is passed through the connecting groove 602 and connected to the wheel frame 6. The wheel frame 6 is abutted and limited with the wheel frame 1 through the abutment block 603. The wheel frame 6 is provided with a mounting groove 601 to connect the tire skin 7. This connection method is convenient and fast.

[0036] Beneficial effects of the utility model: a spring washer 5 is installed between the connecting piece 2 and the wheel set structure, and the contact area between the connecting piece 2 and the wheel set is reduced by the wave-shaped setting. Riveting will not affect the rotation of the wheel set. When the wheel set generates axial vibration, the spring washer 5 can effectively prevent the noise generated by the axial vibration of the wheel set, so that the product has a silent effect.

Claims

1. A silent pulley, comprising a wheel frame, both sides of the wheel frame are movably connected with a wheel set structure by setting a connecting piece, and the wheel frame is rotatably connected with a wheel seat part on the top, characterized in that: A spring washer is provided between the connecting piece and the wheel assembly structure, and the surface of the spring washer is wavy. The wheel assembly structure is provided with a dustproof wheel cover at one end away from the wheel frame by setting a quick-release structure. The wheel assembly structure includes a wheel frame, and the wheel frame is provided with abutment grooves for the spring washer to abut on the side facing the dustproof wheel cover. The connecting piece is a double-sided rivet, and abutment surfaces are provided at both ends of the connecting piece. The spring washer is fixed to the abutment groove by abutting the abutment surface of the connecting piece.

2. A silent pulley according to claim 1, characterized in that: The wheel frame is provided with an installation groove for tire skin installation, a connecting groove for a connecting piece to pass through is provided at the center of the wheel frame, an abutment block is provided on the side of the wheel frame facing the wheel frame, the wheel frame is provided with a connecting piece hole, and the connecting piece is passed through the connecting groove and the connecting piece hole, so that the wheel frame is rotatably connected to both sides of the wheel frame.

3. A silent pulley according to claim 1, characterized in that: The quick-release structure comprises: the dustproof wheel cover is provided with a plurality of snap fasteners, the wheel frame is provided with a plurality of slots, and the dustproof wheel cover is snap-connected with the wheel frame through the snap fasteners and the slots for quick release.

4. A silent pulley according to any one of claims 1 to 3, characterized in that: The wheel frame is provided with a connecting rod at one end facing the wheel seat, and the connecting rod is provided with a connecting cavity for the rotating shaft to be embedded. The wheel frame is provided with an axial rotating rod in the connecting cavity, and the rotating shaft is provided with an embedded groove at the rotating rod. The rotating shaft is limited in rotation by the embedded groove. The bottom end of the wheel seat is provided with an installation cavity, and a connecting through hole is provided in the installation cavity. There is also a limiting groove in the installation cavity, and the rotating shaft is provided with a limiting block. The end of the rotating shaft away from the embedded groove is penetrated in the connecting through hole, and the wheel seat is limited by abutting the limit block with the limit groove.

5. The silent pulley according to claim 1, characterized in that: The spring pad is made of nylon plastic.

6. A silent pulley according to any one of claims 1 to 3, characterized in that: A connecting baffle is arranged around the wheel seat, a connecting block is arranged at the upper end of the wheel seat, an upper protrusion is arranged above the connecting block, and a slot is formed between the upper protrusion and the connecting baffle.

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