Flywheel

Abstract

The utility model provides a flywheel which comprises a metal ring, a disc, an installation head and a decoration ring, an annular butt joint position is arranged on the inner ring of the metal ring, and the disc is installed in the annular butt joint position of the metal ring and fixed through welding. A mounting hole is formed in the middle of the disc, and the mounting head is inserted into the mounting hole and fixed through welding. And external threads are lathed on the periphery of the mounting head. An annular groove is formed in the outer circle of the metal ring, an annular protrusion is arranged on the inner circle of the decorative ring, the decorative ring is arranged on the periphery of the metal ring in a sleeving mode, and the annular protrusion is clamped into the annular groove. According to the utility model, the structure that all the firmware are independent and assembled one by one is adopted, the components can be formed by cutting the existing sectional materials or materials, no extra mold needs to be arranged, the development cost is low, the production difficulty is low, and the processing and the manufacturing are easy.

Description

Technical Field

[0001] The utility model relates to a flywheel. Background Art

[0002] Flywheels are used in many fitness equipment. They are generally made of cast iron and have aluminum rings installed on the outside. Existing flywheels are time-consuming to process, and each specification of flywheel requires mold development and mold equipment, which makes the overall processing difficult. For this reason, the present application provides a flywheel structure with low processing difficulty. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a flywheel structure with low processing difficulty.

[0004] A flywheel comprises a metal ring, a disc, a mounting head and a decorative ring, wherein:

[0005] The inner ring of the metal ring is provided with an annular docking position, and the disc is installed in the annular docking position of the metal ring and fixed by welding. The middle part of the disc is provided with a mounting hole, and the mounting head is inserted into the mounting hole and fixed by welding. The outer circumference of the mounting head is machined with external screw threads. The outer ring of the metal ring is provided with an annular groove, and the inner ring of the decorative ring is provided with an annular protrusion. The decorative ring is sleeved on the outer circumference of the metal ring, and the annular protrusion is stuck in the annular groove.

[0006] The utility model adopts a structure in which each fixture is independent and assembled one by one, and its components can be cut by existing profiles or materials, without the need for additional molds, with low development cost and low production difficulty, and easy processing and manufacturing.

[0007] Preferably, the metal ring is cut from a steel pipe, which is simple to obtain and has high strength and good quality.

[0008] Preferably, the annular docking position of the metal ring is in a groove shape, and the disc is pressed into the annular docking position by interference fit, so that the assembly is firm and reliable.

[0009] Preferably, the annular docking position of the metal ring is in a step shape, and the disc is placed on the step and welded, which reduces the difficulty of assembly.

[0010] Preferably, the disc is made of a steel plate by laser cutting, which is simple to obtain and easy to process.

[0011] Preferably, the mounting head is cut from a steel pipe, which is simple to obtain and has high strength and good quality.

[0012] Preferably, the decorative ring is sleeved on the outer ring of the metal ring by means of heating expansion, and the assembly is firm and reliable.

[0013] Preferably, the decorative ring is made of aluminum.

[0014] Preferably, the two outward ends of the decorative ring adopt a rounded structure so that the outer ring of the entire flywheel forms a rounded corner to avoid sharp corners from scratching the user.

[0015] Preferably, the mounting head is provided with an axial mounting hole, and a mounting step is provided in the mounting hole for docking with the rotating shaft.

[0016] From the above description of the utility model, it can be seen that the utility model has the following beneficial effects:

[0017] The utility model adopts a structure in which each of the components is independent and assembled one by one, and its components can be cut by existing profiles or materials, without the need for additional molds, with low development cost, low production difficulty, and easy processing and manufacturing;

[0018] The metal ring and the mounting head are cut from steel pipes, which are simple to obtain, have high strength and good quality;

[0019] The annular butt joint of the metal ring is in a groove or step shape, and has a flexible structure;

[0020] The disc is made of steel plate by laser cutting, which is simple to obtain and easy to process;

[0021] The decorative ring is sleeved on the outer ring of the metal ring by means of heating expansion, and the assembly is firm and reliable;

[0022] The two ends of the decorative ring facing outwards adopt a rounded structure, so that the outer ring of the entire flywheel forms a rounded corner to avoid sharp corners that may scratch the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0024] in:

[0025] Figure 1 A flywheel axial view Figure 1 ;

[0026] Figure 2 A flywheel axial view Figure 2 ;

[0027] Figure 3 It is a front view of a flywheel;

[0028] Figure 4 It is a side view of a flywheel;

[0029] Figure 5 is a cross-sectional view of a flywheel; (about Figure 3 AA)

[0030] Figure 6 It is a partial enlargement of a flywheel. Figure 1 (about Figure 5 At B, the annular docking position is groove-shaped)

[0031] Figure 7 It is a partial enlargement of a flywheel. Figure 2 (The annular docking position is stepped)

[0032] Figures 1 to 7 The symbols in the figure are: metal ring 1, annular docking position 11, annular groove 12, disc 2, mounting head 3, decorative ring 4, annular protrusion 41. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer and more understandable, the utility model is further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0034] See also Figures 1 to 7 A flywheel comprises a metal ring 1, a disc 2, a mounting head 3 and a decorative ring 4, wherein:

[0035] The inner ring of the metal ring 1 is provided with an annular docking position 11, and the disc 2 is inserted into the annular docking position 11 of the metal ring 1 and fixed by welding. In this embodiment, the annular docking position 11 of the metal ring 1 is in a groove shape, and the disc 2 is pressed into the annular docking position 11 by interference fit, and the assembly is firm and reliable. In another embodiment, the annular docking position 11 of the metal ring 1 is in a step shape, and the disc 2 is placed on the step and welded, and the assembly difficulty is low.

[0036] In one embodiment, the metal ring 1 is cut from a steel pipe, which is simple to obtain, has high strength and good quality.

[0037] A mounting hole is provided in the middle of the disc 2, and the mounting head 3 is inserted into the mounting hole and fixed by welding.

[0038] In one embodiment, the disc 2 is made of a steel plate by laser cutting, which is simple to obtain and easy to process, while the mounting head 3 is made of a steel pipe by cutting, which is simple to obtain and has high strength and good quality.

[0039] The outer circumference of the mounting head 3 is machined with external threads. In this embodiment, the mounting head 3 is provided with an axial mounting hole, and a mounting step is provided in the mounting hole for docking with the rotating shaft.

[0040] The outer ring of the metal ring 1 is provided with an annular groove 12, and the inner ring of the decorative ring 4 is provided with an annular protrusion 41. The decorative ring 4 is sleeved on the outer circumference of the metal ring 1, and the annular protrusion 41 is inserted into the annular groove 12. In this embodiment, the decorative ring 4 is made of aluminum, and the decorative ring 4 is sleeved on the outer ring of the metal ring 1 by heating expansion, so that the assembly is firm and reliable. In addition, the two ends of the decorative ring 4 facing outward adopt a rounded structure, so that the outer ring of the entire flywheel forms a rounded corner to avoid sharp corners that scratch the user.

[0041] The utility model adopts a structure in which each fixture is independent and assembled one by one, and its components can be cut by existing profiles or materials, without the need for additional molds, with low development cost and low production difficulty, and easy processing and manufacturing.

[0042] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A flywheel, characterized in that: Including metal ring, disc, mounting head and decorative ring; The inner ring of the metal ring is provided with an annular docking position, the disc is installed in the annular docking position of the metal ring and fixed by welding; the middle part of the disc is provided with a mounting hole, the mounting head is inserted into the mounting hole and fixed by welding; the outer periphery of the mounting head is machined with external screw threads; the outer ring of the metal ring is provided with an annular groove, the inner ring of the decorative ring is provided with an annular protrusion, the decorative ring is sleeved on the outer periphery of the metal ring, and the annular protrusion is stuck in the annular groove.

2. A flywheel according to claim 1, characterized in that: The metal ring is cut from a steel pipe.

3. A flywheel according to claim 1, characterized in that: The annular docking position of the metal ring is in a groove shape, and the disc is pressed into the annular docking position by interference fit.

4. A flywheel according to claim 1, characterized in that: The annular butt joint of the metal ring is in a step shape, and the disc is placed on the step and welded.

5. A flywheel according to claim 1, characterized in that: The disc is cut from a steel plate by laser.

6. A flywheel according to claim 1, characterized in that: The mounting head is formed by cutting a steel pipe.

7. A flywheel according to claim 1, characterized in that: The decorative ring is sleeved on the outer ring of the metal ring by means of heating expansion.

8. A flywheel according to claim 1, characterized in that: The decorative ring is made of aluminum.

9. A flywheel according to claim 1, characterized in that: The two outward ends of the decorative ring adopt rounded corner structures.

10. A flywheel according to claim 1, characterized in that: The mounting head is provided with an axial mounting hole, and a mounting step is provided in the mounting hole.

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