CA2101016A1 - Flywheel specially used for sporting goods and the method of making the same - Google Patents
Flywheel specially used for sporting goods and the method of making the sameInfo
- Publication number
- CA2101016A1 CA2101016A1 CA002101016A CA2101016A CA2101016A1 CA 2101016 A1 CA2101016 A1 CA 2101016A1 CA 002101016 A CA002101016 A CA 002101016A CA 2101016 A CA2101016 A CA 2101016A CA 2101016 A1 CA2101016 A1 CA 2101016A1
- Authority
- CA
- Canada
- Prior art keywords
- metal
- side covers
- flywheel
- thru
- rim
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/30—Flywheels
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Golf Clubs (AREA)
Abstract
FLYWHEEL SPECIALLY USED FOR SPORTING GOODS & THE METHOD
OF MAKING THE SAME
ABSTRACT OF THE DISCLOSURE
A flywheel specially used for sporting goods and the the method of making the same, mainly comprising of an I-shaped body, a metal rim, two side covers and a shaft; wherein the I-shaped body is cast into shape from a mixture of metal filings (or metal powder) and concrete which are mixed with each other in a certain ratio, and has a thru-hole at the center thereof; the metal rim in proper thickness is made to have an inner diameter slightly larger than the outer diameter of the body for a tight fit around the outer periphery of such body; each of the two side covers is formed into a shape corresponding to the section at either side of the body, and has a thru-hole at the center thereof, so that these side covers cab be fitted to the body at both sides thereof; the shaft is put though said corresponding thru-holes of the body and side covers for being kept in place therein by welding; characterized in that the I-shaped body is able to replace conventional ones made by 100% metal materials, so as to save the production cost with higher manufacturing efficiency and quality.
OF MAKING THE SAME
ABSTRACT OF THE DISCLOSURE
A flywheel specially used for sporting goods and the the method of making the same, mainly comprising of an I-shaped body, a metal rim, two side covers and a shaft; wherein the I-shaped body is cast into shape from a mixture of metal filings (or metal powder) and concrete which are mixed with each other in a certain ratio, and has a thru-hole at the center thereof; the metal rim in proper thickness is made to have an inner diameter slightly larger than the outer diameter of the body for a tight fit around the outer periphery of such body; each of the two side covers is formed into a shape corresponding to the section at either side of the body, and has a thru-hole at the center thereof, so that these side covers cab be fitted to the body at both sides thereof; the shaft is put though said corresponding thru-holes of the body and side covers for being kept in place therein by welding; characterized in that the I-shaped body is able to replace conventional ones made by 100% metal materials, so as to save the production cost with higher manufacturing efficiency and quality.
Description
o ~ ~
FLYWHEEL SPECIALLY USED FOR SPORTING GOODS & THE METHOD
OF MAKING THE SAME
BACK~ROUND OF THE INYENTION
The present invention relates to a flywheel specially used for sporting goods and the method of making the same, and more particularly to a flywheel which is new in structure to save ~he cost of ma~erials and ensure a stable turning movement.
One of conventional flywheels used for sporting goods is made by sand molding (refer to Fig.
1). Although the method to make this kind of flywheel is simple and easy, its has the following disadvantages:
.
1. The flywheel of this kind is made by 100%
metal materials such as iron or aluminum, grea~ amount of metal materials must be consumed if a higher turning stability is required, so the production cost is expensi~e.
FLYWHEEL SPECIALLY USED FOR SPORTING GOODS & THE METHOD
OF MAKING THE SAME
BACK~ROUND OF THE INYENTION
The present invention relates to a flywheel specially used for sporting goods and the method of making the same, and more particularly to a flywheel which is new in structure to save ~he cost of ma~erials and ensure a stable turning movement.
One of conventional flywheels used for sporting goods is made by sand molding (refer to Fig.
1). Although the method to make this kind of flywheel is simple and easy, its has the following disadvantages:
.
1. The flywheel of this kind is made by 100%
metal materials such as iron or aluminum, grea~ amount of metal materials must be consumed if a higher turning stability is required, so the production cost is expensi~e.
2. Subject to the density and moisture oE
sand, temperature of liquid metal, and skill of the operators, sand molding failure occurring from time to time will give further burden on the production cost.
' .
~ 20 3. Sand molding operation is time consuming, , J
i 1 :3 ~ ' , i 1 ' . . ' ' ' ' ~ i . , 2 ~
particularly when a workpiece wi~h higher accuracy is required. Besides, much time and fuel are also taken for melting metal materials. Therefore, it is not effective and economic to produce a 100% metal flywheel by sand molding process.
~ . After molding, no such flywheel can be used unless it has been subject to a machining work for trimming, thus consuming more -time and money.
To solve the problems men~ioned above, a method to make another conventional flywheel (A) as shown in Fig. 2 has been disclosed. With this method, the flywheel (A) is first divided into two pieces for assembling together later. After assembly, a hollow space is formed between the two pieces thus assembled, and a thru-hole (B) is provided thereon at an adequate position. Consequently, such materials as cement can act as a substitute for metal to be poured into the thru-hole (B) for filling the hollow space, thus making up the weight required by a flywheel.
Although this method can reduce the cost of materials to some extent, it would result in a major disadvan-tage of uneven pouring. As it is impossible to fully evacuate the air out of the hollow space upon pouring operation, and the shrinkage factor would greatly affect the distribution of cement paste in the hollow space during the setting period. Therefore, the flywheel produced by this method is likely to become unstable and unsmoothed during its turning movement, it is not suitable for practical use.
SUMMARY OF THE INVENTION
The present invention has been accomplished tv solve the problems and disadvantages found in the prior art. It is the maln object of the present invention to provide a flywheel which can help the manufacturers reduce the cost in production to a considerable extent.
For this purpose, concrete and metal filings (or metal powder} are applied to mix with each other for casting into a s~heel body which will be used to replace the more expensive wheel body made by 100% metal in the prior art. As no pouring of molten metal and strict accuracy are required in the present in~ention, it is easier to have the wheel body cast in~.o shape. Further, it is able to ensure the wheel body thus cast to be maintained in a state of even setting state and require no machining work after assembly. Therefore, the flywheel in accordance with the present invention is ~1 2~ o~a~ 6 much better than those of prior art in manufacturing quality, production eEficiency, and economic benefit.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will now be described in detail by way of example with reference to the accompanied drawings, in which:
Fig. 1 is a perspective view, together with a sectional view, showing a prior art flywheel made by 100% metal;
Fig. 2 is a perspective view, together with a sectional view, showing another prior art flywheel made by pouring such materials as cement to substitute the metal material; ~.
Fig. 3 i5 an exploded assembling view oE a flywheel in accordance with the present invention; and Fig. 4 is an assembling view, together with a sectional view, showing the assembly condition of a flywheel of Fig. 3.
DETAILED DESCRIPTION OF THE PREFERRED EMBODI~ENT ~.
Referring to Figs. 3 and 4, a flywheel 10 in ~ :
accordance with the present inventions is comprised of an I-shaped body 207 a me~al rim 30, two side covers, :
and a shaft SO. ~
2~ ~10:~
The body 20 is cast into shape from a mixture of metal filings (or metal powder) and concrete which are mixed with each other in a certain ratio, and has a thru-hole 22 at the center thereof. The metal rim 30 in proper thickness is made to have an inner diameter slightly larger than the outer diameter of the body 50 for a tight fit around the outer periphery of the body 20. Each of the two side covers 40 is formed by stamping sheet metal into a shape corresponding to the section at either side of the body 20, and has a thru-hole 42 at the center thereof, so that when these side covers 40 are Eitted to the body 20 at both sides thereof and assembled together with the body 20 and metal rim 30 by welding, the shaft 50 can be put though the corresponding thru-holes 22 and 42 of the body 20 and the side covers 40, and be kept by welding in place therein.
' ~
It is obviously and easily known that the flywheel 10 in accordance with the present invention i5 20 . made as follows: Mix metal filings (or metal powder) and concrete in a certain ratio, then cast the resultant mixture into an I-shaped body 20. After that, have a me~al rim 30 tightly fitted around the ou~er periphery of the body 20. On the other hand, two side cover 40 are formed by stamping sheet metal into a shape 2~0~6 corresponding to the section at either side of the body 20 for fitting to the same by welding. Thereafter, put a shaft 50 though the corresponding thru-holes 22 and 42 of the body 20 and the side covers 40 for welding in place therein. Finally, use a lathe to carry out a machining work on the metal rim 30 (i.e., the outer periphery of the body 20) to cut a groove 32 in adequate depth for receiving therein a driving rope (not shown) equipped by any kind of spor~ing goods.
As far as the mixing ratic in regard to the content of the body 20 is concerned, it is subject to the weight of the body 20 required. If it is required to have a lighter body 20 in weight, for example, one can reduce the parts of metal filings (or me~al powder) and increase the parts of concrete; or one can increase the parts of metal filings (or metal powder) and reduce the parts oE concrete if a heavier body 20 is needed.
Further, each side cover 40 is provided with a flange 44 in proper width at the inner peripheral edge thereof relative to the other side cover 40. When the side covers 40 are fitted to the body 20 at both sides thereof, the flanges 44 can press against the metal rim 30, thereby firmly holding such me~al rim 30 in place.
~1 i ~ 6 '` .
2~ 01~ :~
As the body 20 in accordance with the present invention can be cas-t into shape more rapidly, and the side covers 40 are formed by a simple stam~ing process, the manufacturing eEficiency and output for the flywheel 5of the present invention will be much better than those prior art ones.
Also, it is easier to control the body 20 of the present inven~ion in quality, thereby giving a turning movement more stable than that made in 10accordance with the prior art.
It will be obvious to those skilled in the art that various changes and modification can be made without departing from the basic teachings of the invention, and the invention is not to be considered 15limited to what is shown in the drawings and described in the specification. Fore example, the side covers 40 may be formed by plastic material and fastened to the body 20 by way of bolts.
In conclusion, the body 20 of the present 20invention is cast into shape from a mixture of metal filings (or metal powder) and concrete to be mixed with each other in a certain ration, and the flywheel produced therefrom can entirely replace conventional 2 ~
ones, so as to save the production cost with higher manufacturing efficiency and quality.
..
sand, temperature of liquid metal, and skill of the operators, sand molding failure occurring from time to time will give further burden on the production cost.
' .
~ 20 3. Sand molding operation is time consuming, , J
i 1 :3 ~ ' , i 1 ' . . ' ' ' ' ~ i . , 2 ~
particularly when a workpiece wi~h higher accuracy is required. Besides, much time and fuel are also taken for melting metal materials. Therefore, it is not effective and economic to produce a 100% metal flywheel by sand molding process.
~ . After molding, no such flywheel can be used unless it has been subject to a machining work for trimming, thus consuming more -time and money.
To solve the problems men~ioned above, a method to make another conventional flywheel (A) as shown in Fig. 2 has been disclosed. With this method, the flywheel (A) is first divided into two pieces for assembling together later. After assembly, a hollow space is formed between the two pieces thus assembled, and a thru-hole (B) is provided thereon at an adequate position. Consequently, such materials as cement can act as a substitute for metal to be poured into the thru-hole (B) for filling the hollow space, thus making up the weight required by a flywheel.
Although this method can reduce the cost of materials to some extent, it would result in a major disadvan-tage of uneven pouring. As it is impossible to fully evacuate the air out of the hollow space upon pouring operation, and the shrinkage factor would greatly affect the distribution of cement paste in the hollow space during the setting period. Therefore, the flywheel produced by this method is likely to become unstable and unsmoothed during its turning movement, it is not suitable for practical use.
SUMMARY OF THE INVENTION
The present invention has been accomplished tv solve the problems and disadvantages found in the prior art. It is the maln object of the present invention to provide a flywheel which can help the manufacturers reduce the cost in production to a considerable extent.
For this purpose, concrete and metal filings (or metal powder} are applied to mix with each other for casting into a s~heel body which will be used to replace the more expensive wheel body made by 100% metal in the prior art. As no pouring of molten metal and strict accuracy are required in the present in~ention, it is easier to have the wheel body cast in~.o shape. Further, it is able to ensure the wheel body thus cast to be maintained in a state of even setting state and require no machining work after assembly. Therefore, the flywheel in accordance with the present invention is ~1 2~ o~a~ 6 much better than those of prior art in manufacturing quality, production eEficiency, and economic benefit.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will now be described in detail by way of example with reference to the accompanied drawings, in which:
Fig. 1 is a perspective view, together with a sectional view, showing a prior art flywheel made by 100% metal;
Fig. 2 is a perspective view, together with a sectional view, showing another prior art flywheel made by pouring such materials as cement to substitute the metal material; ~.
Fig. 3 i5 an exploded assembling view oE a flywheel in accordance with the present invention; and Fig. 4 is an assembling view, together with a sectional view, showing the assembly condition of a flywheel of Fig. 3.
DETAILED DESCRIPTION OF THE PREFERRED EMBODI~ENT ~.
Referring to Figs. 3 and 4, a flywheel 10 in ~ :
accordance with the present inventions is comprised of an I-shaped body 207 a me~al rim 30, two side covers, :
and a shaft SO. ~
2~ ~10:~
The body 20 is cast into shape from a mixture of metal filings (or metal powder) and concrete which are mixed with each other in a certain ratio, and has a thru-hole 22 at the center thereof. The metal rim 30 in proper thickness is made to have an inner diameter slightly larger than the outer diameter of the body 50 for a tight fit around the outer periphery of the body 20. Each of the two side covers 40 is formed by stamping sheet metal into a shape corresponding to the section at either side of the body 20, and has a thru-hole 42 at the center thereof, so that when these side covers 40 are Eitted to the body 20 at both sides thereof and assembled together with the body 20 and metal rim 30 by welding, the shaft 50 can be put though the corresponding thru-holes 22 and 42 of the body 20 and the side covers 40, and be kept by welding in place therein.
' ~
It is obviously and easily known that the flywheel 10 in accordance with the present invention i5 20 . made as follows: Mix metal filings (or metal powder) and concrete in a certain ratio, then cast the resultant mixture into an I-shaped body 20. After that, have a me~al rim 30 tightly fitted around the ou~er periphery of the body 20. On the other hand, two side cover 40 are formed by stamping sheet metal into a shape 2~0~6 corresponding to the section at either side of the body 20 for fitting to the same by welding. Thereafter, put a shaft 50 though the corresponding thru-holes 22 and 42 of the body 20 and the side covers 40 for welding in place therein. Finally, use a lathe to carry out a machining work on the metal rim 30 (i.e., the outer periphery of the body 20) to cut a groove 32 in adequate depth for receiving therein a driving rope (not shown) equipped by any kind of spor~ing goods.
As far as the mixing ratic in regard to the content of the body 20 is concerned, it is subject to the weight of the body 20 required. If it is required to have a lighter body 20 in weight, for example, one can reduce the parts of metal filings (or me~al powder) and increase the parts of concrete; or one can increase the parts of metal filings (or metal powder) and reduce the parts oE concrete if a heavier body 20 is needed.
Further, each side cover 40 is provided with a flange 44 in proper width at the inner peripheral edge thereof relative to the other side cover 40. When the side covers 40 are fitted to the body 20 at both sides thereof, the flanges 44 can press against the metal rim 30, thereby firmly holding such me~al rim 30 in place.
~1 i ~ 6 '` .
2~ 01~ :~
As the body 20 in accordance with the present invention can be cas-t into shape more rapidly, and the side covers 40 are formed by a simple stam~ing process, the manufacturing eEficiency and output for the flywheel 5of the present invention will be much better than those prior art ones.
Also, it is easier to control the body 20 of the present inven~ion in quality, thereby giving a turning movement more stable than that made in 10accordance with the prior art.
It will be obvious to those skilled in the art that various changes and modification can be made without departing from the basic teachings of the invention, and the invention is not to be considered 15limited to what is shown in the drawings and described in the specification. Fore example, the side covers 40 may be formed by plastic material and fastened to the body 20 by way of bolts.
In conclusion, the body 20 of the present 20invention is cast into shape from a mixture of metal filings (or metal powder) and concrete to be mixed with each other in a certain ration, and the flywheel produced therefrom can entirely replace conventional 2 ~
ones, so as to save the production cost with higher manufacturing efficiency and quality.
..
Claims (3)
1. A flywheel specially used for sporting goods, comprising:
an I-shaped body, said body being cast into shape from a mixture of metal filings (or metal powder) and concrete which are mixed with each other in a certain ratio, and having a thru-hole at the center thereof;
a metal rim in proper thickness, said rim being made to have an inner diameter slightly larger than the outer diameter of the said body for a tight fit around the outer periphery of said body;
two side covers, each of them being formed into a shape corresponding to the section at either side of said body, and having a thru-hole at the center thereof, so that said side covers can be fitted to said body at both sides thereof;
a shaft, said shaft being put though said corresponding thru-holes of said body and said side covers for being kept in place therein by welding;
characterized in that said I-shaped body is able to replace conventional ones made by 100% metal materials, so as to save the production cost with higher manufacturing efficiency and quality.
an I-shaped body, said body being cast into shape from a mixture of metal filings (or metal powder) and concrete which are mixed with each other in a certain ratio, and having a thru-hole at the center thereof;
a metal rim in proper thickness, said rim being made to have an inner diameter slightly larger than the outer diameter of the said body for a tight fit around the outer periphery of said body;
two side covers, each of them being formed into a shape corresponding to the section at either side of said body, and having a thru-hole at the center thereof, so that said side covers can be fitted to said body at both sides thereof;
a shaft, said shaft being put though said corresponding thru-holes of said body and said side covers for being kept in place therein by welding;
characterized in that said I-shaped body is able to replace conventional ones made by 100% metal materials, so as to save the production cost with higher manufacturing efficiency and quality.
2. The flywheel specially used for sporting goods as set forth in Claim 1, wherein each of said side covers is provided with a flange in proper width at the inner peripheral edge thereof relative to the other side cover, when said side covers being fitted to said body at both sides thereof, said flanges being able to press against said metal rim, thereby firmly holding said metal rim in place.
3. A method of making a flywheel specially used for sporting good, comprising the following steps:
mixing metal filings (or metal powder) and concrete in a certain ratio, then casting the resultant mixture into an I-shaped body;
having a metal rim tightly fitted around the outer periphery of the body;
stamping sheet metal to form two side covers with a shape corresponding to the section at either side of said body for fitting to the same by welding;
putting a shaft though the corresponding thru-holes of said body and said side covers for being kept in place therein by welding; and, using a lathe to carry out a machining work on said metal rim to cut a groove in adequate depth.
mixing metal filings (or metal powder) and concrete in a certain ratio, then casting the resultant mixture into an I-shaped body;
having a metal rim tightly fitted around the outer periphery of the body;
stamping sheet metal to form two side covers with a shape corresponding to the section at either side of said body for fitting to the same by welding;
putting a shaft though the corresponding thru-holes of said body and said side covers for being kept in place therein by welding; and, using a lathe to carry out a machining work on said metal rim to cut a groove in adequate depth.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002101016A CA2101016A1 (en) | 1993-07-21 | 1993-07-21 | Flywheel specially used for sporting goods and the method of making the same |
| DE4325840A DE4325840A1 (en) | 1993-07-21 | 1993-07-31 | Flywheel and process for the production thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002101016A CA2101016A1 (en) | 1993-07-21 | 1993-07-21 | Flywheel specially used for sporting goods and the method of making the same |
| DE4325840A DE4325840A1 (en) | 1993-07-21 | 1993-07-31 | Flywheel and process for the production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2101016A1 true CA2101016A1 (en) | 1995-01-22 |
Family
ID=25676400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002101016A Abandoned CA2101016A1 (en) | 1993-07-21 | 1993-07-21 | Flywheel specially used for sporting goods and the method of making the same |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA2101016A1 (en) |
| DE (1) | DE4325840A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438150A (en) * | 2013-08-30 | 2013-12-11 | 捷世达电机（昆山）有限公司 | Flywheel structure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2004857C2 (en) * | 2010-06-09 | 2011-12-15 | Roucar Gear Technologies B V | Inertial energy accumulating device. |
-
1993
- 1993-07-21 CA CA002101016A patent/CA2101016A1/en not_active Abandoned
- 1993-07-31 DE DE4325840A patent/DE4325840A1/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438150A (en) * | 2013-08-30 | 2013-12-11 | 捷世达电机（昆山）有限公司 | Flywheel structure |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4325840A1 (en) | 1995-02-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |