CA1263877A - Running exerciser - Google Patents
Running exerciserInfo
- Publication number
- CA1263877A CA1263877A CA000497002A CA497002A CA1263877A CA 1263877 A CA1263877 A CA 1263877A CA 000497002 A CA000497002 A CA 000497002A CA 497002 A CA497002 A CA 497002A CA 1263877 A CA1263877 A CA 1263877A
- Authority
- CA
- Canada
- Prior art keywords
- shaft
- motor assembly
- base frame
- driving shaft
- clutch discs
- 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.)
- Expired
Links
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- Rehabilitation Tools (AREA)
Abstract
TITLE: IMPROVED RUNNING EXERCISER
ABSTRACT OF THE DISCLOSURE
This invention relates to an improved running exerciser and in particular to one which mainly comprises a base frame having a first shaft and second shaft, a pair of inverted U-shaped members each mounted at one side of the base frame, a track in form of a loop wrapping around the first shaft and the second shaft, a pulley fastened on one end of the first shaft, a motor assembly having a tubular rod enclosing the first shaft, a pair of conical clutch discs put over a driving shaft of the motor assembly, a belt connecting the pulley to the clutch discs, a speed control mechanism mounted on one of the inverted U-shaped members for regulating speed of the track, and a stand for lifting front end of the base frame to incline the track to form a slope.
ABSTRACT OF THE DISCLOSURE
This invention relates to an improved running exerciser and in particular to one which mainly comprises a base frame having a first shaft and second shaft, a pair of inverted U-shaped members each mounted at one side of the base frame, a track in form of a loop wrapping around the first shaft and the second shaft, a pulley fastened on one end of the first shaft, a motor assembly having a tubular rod enclosing the first shaft, a pair of conical clutch discs put over a driving shaft of the motor assembly, a belt connecting the pulley to the clutch discs, a speed control mechanism mounted on one of the inverted U-shaped members for regulating speed of the track, and a stand for lifting front end of the base frame to incline the track to form a slope.
Description
3 ~1 7 ~
sAcKGRo~ND OF THE INVENTION
This invention relates to an improved running exerciser.
Heretofore, many running exercisers have been developed and sold on the market. However, they have many drawbacks and should be improved. For instance, the running exerciser on the market operates at constant speed and hence cannot adapt to the needs of everybody. Further, the track of the running exerciser is fixedly mounted.in a horiæontal plane thereby failing to provide another mode such as a slope for the user.
It is, therefore, an object of the present invention to provide an improved running exerciser which may eli~inate the above-mentioned drawbacks.
SUMMARY OF THE INVENTION
. It is the primary object of the present invention to provide an improved running exerciser the speed of which is adjustable.
It is another object of the present invention to ~L~
provide an irnproved running exerciser the front end of which can be lifted to incline the track to form a slope.
It is s~ill another object of the present invention to provide an improved running exerciser which is simple in construction.
It is still another object of the present invention to provide an improved running exerciser which is easy to operate.
It is a further object of the present invention to provide an improved running exerciser which is economic to produce.
It is still a further object of the present invention to provide an improved running exerciser which is facile to assemble.
According to the invention therefore there is provided a running exerciser cornprising: a base frame having a first shaft mounted across front part thereof, a second shaft mounted across rear part thereof, a first fixed rod mounted between front end of the base frame and the first shaft, and a second fixed rod mounted between front end of the base frarne and the first fixed rod; a pair of inverted U-shaped mernbers each mounted at one side of said base i3~7`7 frame; a track in shape o:E a loop wrapping around the first shaft and the second shaft; a pulley fastened on one end of said first shaft; a motor assembly provided with a driving shaft having a key formed integrally therewith and a tubular rod put ovec said first shaft; a stop disc put over the driving shaft of the motor assembly; a first spring enclosing the driving shaft of the motor assembly and bearing against the stop plate; a pair of clutch discs each having a conical surface and a keyway adapted to the key of the driving rod of the motor assembly, said conical clutch discs being put over said driving shaft with the conical surface thereof Eacing each other; a second spring means enclosing the driving shaft of the motor assembly and forcing the conical clutch discs to move towards each other; a stop plate fixedly connected to free end of the driving shaEt of the motor assembly by a screw; a belt connecting said pulley with said clutch discs; a speed control mechanism mounted on one of said inverted U-shaped members, said mechanism including a housing having therein a movable block, a screw fixed in said housing and threadedly connected with said movable member, and a cable wire connected at one end with the movable block and at the other end with the motor assembly.
Other objects and merits and a fuller understanding of the present invention will be obtained by those having ordinary skill in the art when the following detailed description of the best mode contemplated for practicing the invention is read in conjunction with the accompanying drawings wherein like ; - 3A -3~7 7 numerals refer to like or similar parts and in which:
BRIEF DESCRIPTION OF THE DRAWINGS:
FIG. 1 is a perspective view of an improved running exerciser according to the present invention;
FIG. 2 shows the structure of the improved running exerciser, FIG. 3 is a fragmentary view showing the structure of the speed control mechanism of the improved running exerciser .
FIG. 4 iS a ragmentary exploded view of the improved running exerciser;
FIG. 5 shows that the clutch discs are forced to move away from each other thereby providing a smaller circumference to engage with the belt when the motor assembly is moved outwards;
FIG. 6 iS a side view of FIG. 5;
. FIG. 7 shows that the clutch discs bear against each other thereby providing a larger circumference to engage with the belt when the motor assembly is moved inwards; and FIG. 8 is a side view of FIG. 7;
FIG. 9 shows the mechanism of the stand for lifting the front end of the base frame to incline the 3~
track to Eorm a slope.
DETAILED DESCRIPTION OF THE PREFERRED EtlBO~IMENT
Before explaining the present invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and arrangement of parts illustrated in the accompanying drawings, since the invention is capable of other embodiments and of being practiced or carried out in various ways. Also~ it is to be understood that the phraseology or terminlogy employed herein is for the purpose of description and not of limitation.
With reference to the drawings and in particular to FIGS. 1, 2 and 4 thereof, the improved running exerciser 100 according to the present invention mainly comprises a base frame 1, a pulley 2, a track 3 and a motor assembly 4. The base frame 1 is provided with a first shaft 11 mounted across front part thereof, a second shaft mounted across rear part thereof, a first fixed rod 13, and second fixed rod 14. At two sides of the base frame 1 there are respectively mounted two inverted U-shaped members 15. The track 3 is in f~rm of a loop wrapping around the first shaft 11 ancl the second shaft 12. The pulley 2 is disposed on the first shaft 11 for driving the track 3. The motor assembly 4 ~3~
is provided with a tubular rod 41 which can be just put over the first fixed rod 13~ The first fixed rod 13 is secured on the base frame 1 by screws 16. The motor assembly 4 is furtheL provided with a driving shaft 42 5 having a key 421 formed integrally therewith. A stop disc 63 having a key slot 631 adapted to the key 421 of the driviny shaft 42, a first helical spring 61, and a first conical clutch disc 51 formed with a center hole 511 having a keyway 512 adapted to the key 421 of the 10 driving shaft 42 are in turn put over the ~riving shaft 42. Then, a second conical clutch disc 52 formed with a hole 521 h~ving a keyway 522 adapted to the key 421 of the driviT~g shaft 42 is put over the drivin~ shaft 42, ~ith the con~cal surfaces of the conical clutch 15 discs 51 and 52 facing each other. A second helical spring 62 and a stop plate 64 are put over the driving shaft 42 in succession and th.en a screw 17 is secured to the free end of the driving shaft 41 thereby preventing the stop disc 63, the first helical spring 20 61/ the first conical clutch disc 51, the second conical clutch disc 52, the second spring 62 and the stop plate 64 from dropping off, The present invention is mainly characterized by the motor assembly 4 which may change its position to 25 adjust the mcving speed of the track 3. This is due to ;3~ ~
the fact that the tubular rod 41 can be rotated with respect to the first fixed rod 13. As a result, the motor assembly 4 could be moved outwards by an external force ~see FIGS. 2, 5 and 6). A speed control mechanism 200 including a housing 7 having therein a movable block 71 is provided on one of the inverted U-shaped member 15. Referring to FIG. 3, the movable block 71 has at the center a threaded hole connected with a screw 73 of a handle 72. A cable wire 8 is attached at one end to the movable block 71 and at the other end to the motor assembly 4. As the handle 72 is rotated, the movable block 71 will move upwards or downwards. When. the movable block 71 is moved upwards, the cable wire 8 will pull the motor assembly 8 outwards, thereby increasing the distance between the conical clutch discs 51 and 52 and the pulley 2.
Conseq~ently, the belt 18 will ~orce the two conical clutch discs 51 and 52 to move away from each other and . so the circ.umference engaged with the belt 18 becomes smaller. Similarly! as the movable block 71 is moved downwards, the cable wire will increase in length;
thus, the motor assembly 8 will move inwards and the tension on the belt 18 will decrease Hence, the conical clutch discs 51 and 52 will move towards each other, increasing the circumference engayed with the belt 18. Since the driving shaft 42 rotates at a ~j3~ ~
constant speed, the pulley 2 will rotate faster when the circumference engaged with the belt 18 is larger.
In a similar way, the pulley 2 will rotate slower when the circumference engaged with the belt 18 is smaller. -In other words, the larger the circumference engagedwith the belt 18, the higher the speed of the track 3, and the smaller the circumference engaged with the belt 18, the lower the speed of the track 3. However, it should be noted that the speed control mechanism is the conical clutch discs 51 and 52 even when the movable block 71 is moved down to its lowest position and the belt 18 wi-ll not get In touch with the driving shaft 42 even when the movable blok 71 is moved up to its highest position.
As a result, the speed of the present invention can be regulated by the speed control mechanism in association with the motor assembly 4. To make up for the deviation of the motor assembly 4 caused by the wearing of the belt 18, the speed control mechanism 200 is further provided with an adjusting screw 81.
Another characteristic of the present invention is that the front end of the base frame 1 can be adjusted in height so as to incline the track 3 to form a slope enabllng the user to run thereon. ~uning to FIGS. 1, 2 ;3~3~7 and 4, an adjustable stand 300 is provided on the base frame 1 for regulating the slope. The adjustable stand 300 is provided with a screw 91 engaged with a U-shaped element 92 which is in turn connected with a tubular member 93 enclosing the second Eixed rod 14. As the screw 91 is turned into the U~shaped element 92, the tubular member 93 will rotate downwards thereby lifting the front portion of the base frame 1 and therefore, inclining the track 3 to form a slope. Normally, the base frame 1 is kept horizontal. Further, the adjustable stand 300 is provided with wheels 94 for preventing the ground from being damaged.
Although this invention has been described with a certain degree of particularity, it is undestood that the present disclosure is made by way of example only and that numerous changes in the detail of construction and the combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as hereinafter claimed.
sAcKGRo~ND OF THE INVENTION
This invention relates to an improved running exerciser.
Heretofore, many running exercisers have been developed and sold on the market. However, they have many drawbacks and should be improved. For instance, the running exerciser on the market operates at constant speed and hence cannot adapt to the needs of everybody. Further, the track of the running exerciser is fixedly mounted.in a horiæontal plane thereby failing to provide another mode such as a slope for the user.
It is, therefore, an object of the present invention to provide an improved running exerciser which may eli~inate the above-mentioned drawbacks.
SUMMARY OF THE INVENTION
. It is the primary object of the present invention to provide an improved running exerciser the speed of which is adjustable.
It is another object of the present invention to ~L~
provide an irnproved running exerciser the front end of which can be lifted to incline the track to form a slope.
It is s~ill another object of the present invention to provide an improved running exerciser which is simple in construction.
It is still another object of the present invention to provide an improved running exerciser which is easy to operate.
It is a further object of the present invention to provide an improved running exerciser which is economic to produce.
It is still a further object of the present invention to provide an improved running exerciser which is facile to assemble.
According to the invention therefore there is provided a running exerciser cornprising: a base frame having a first shaft mounted across front part thereof, a second shaft mounted across rear part thereof, a first fixed rod mounted between front end of the base frame and the first shaft, and a second fixed rod mounted between front end of the base frarne and the first fixed rod; a pair of inverted U-shaped mernbers each mounted at one side of said base i3~7`7 frame; a track in shape o:E a loop wrapping around the first shaft and the second shaft; a pulley fastened on one end of said first shaft; a motor assembly provided with a driving shaft having a key formed integrally therewith and a tubular rod put ovec said first shaft; a stop disc put over the driving shaft of the motor assembly; a first spring enclosing the driving shaft of the motor assembly and bearing against the stop plate; a pair of clutch discs each having a conical surface and a keyway adapted to the key of the driving rod of the motor assembly, said conical clutch discs being put over said driving shaft with the conical surface thereof Eacing each other; a second spring means enclosing the driving shaft of the motor assembly and forcing the conical clutch discs to move towards each other; a stop plate fixedly connected to free end of the driving shaEt of the motor assembly by a screw; a belt connecting said pulley with said clutch discs; a speed control mechanism mounted on one of said inverted U-shaped members, said mechanism including a housing having therein a movable block, a screw fixed in said housing and threadedly connected with said movable member, and a cable wire connected at one end with the movable block and at the other end with the motor assembly.
Other objects and merits and a fuller understanding of the present invention will be obtained by those having ordinary skill in the art when the following detailed description of the best mode contemplated for practicing the invention is read in conjunction with the accompanying drawings wherein like ; - 3A -3~7 7 numerals refer to like or similar parts and in which:
BRIEF DESCRIPTION OF THE DRAWINGS:
FIG. 1 is a perspective view of an improved running exerciser according to the present invention;
FIG. 2 shows the structure of the improved running exerciser, FIG. 3 is a fragmentary view showing the structure of the speed control mechanism of the improved running exerciser .
FIG. 4 iS a ragmentary exploded view of the improved running exerciser;
FIG. 5 shows that the clutch discs are forced to move away from each other thereby providing a smaller circumference to engage with the belt when the motor assembly is moved outwards;
FIG. 6 iS a side view of FIG. 5;
. FIG. 7 shows that the clutch discs bear against each other thereby providing a larger circumference to engage with the belt when the motor assembly is moved inwards; and FIG. 8 is a side view of FIG. 7;
FIG. 9 shows the mechanism of the stand for lifting the front end of the base frame to incline the 3~
track to Eorm a slope.
DETAILED DESCRIPTION OF THE PREFERRED EtlBO~IMENT
Before explaining the present invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and arrangement of parts illustrated in the accompanying drawings, since the invention is capable of other embodiments and of being practiced or carried out in various ways. Also~ it is to be understood that the phraseology or terminlogy employed herein is for the purpose of description and not of limitation.
With reference to the drawings and in particular to FIGS. 1, 2 and 4 thereof, the improved running exerciser 100 according to the present invention mainly comprises a base frame 1, a pulley 2, a track 3 and a motor assembly 4. The base frame 1 is provided with a first shaft 11 mounted across front part thereof, a second shaft mounted across rear part thereof, a first fixed rod 13, and second fixed rod 14. At two sides of the base frame 1 there are respectively mounted two inverted U-shaped members 15. The track 3 is in f~rm of a loop wrapping around the first shaft 11 ancl the second shaft 12. The pulley 2 is disposed on the first shaft 11 for driving the track 3. The motor assembly 4 ~3~
is provided with a tubular rod 41 which can be just put over the first fixed rod 13~ The first fixed rod 13 is secured on the base frame 1 by screws 16. The motor assembly 4 is furtheL provided with a driving shaft 42 5 having a key 421 formed integrally therewith. A stop disc 63 having a key slot 631 adapted to the key 421 of the driviny shaft 42, a first helical spring 61, and a first conical clutch disc 51 formed with a center hole 511 having a keyway 512 adapted to the key 421 of the 10 driving shaft 42 are in turn put over the ~riving shaft 42. Then, a second conical clutch disc 52 formed with a hole 521 h~ving a keyway 522 adapted to the key 421 of the driviT~g shaft 42 is put over the drivin~ shaft 42, ~ith the con~cal surfaces of the conical clutch 15 discs 51 and 52 facing each other. A second helical spring 62 and a stop plate 64 are put over the driving shaft 42 in succession and th.en a screw 17 is secured to the free end of the driving shaft 41 thereby preventing the stop disc 63, the first helical spring 20 61/ the first conical clutch disc 51, the second conical clutch disc 52, the second spring 62 and the stop plate 64 from dropping off, The present invention is mainly characterized by the motor assembly 4 which may change its position to 25 adjust the mcving speed of the track 3. This is due to ;3~ ~
the fact that the tubular rod 41 can be rotated with respect to the first fixed rod 13. As a result, the motor assembly 4 could be moved outwards by an external force ~see FIGS. 2, 5 and 6). A speed control mechanism 200 including a housing 7 having therein a movable block 71 is provided on one of the inverted U-shaped member 15. Referring to FIG. 3, the movable block 71 has at the center a threaded hole connected with a screw 73 of a handle 72. A cable wire 8 is attached at one end to the movable block 71 and at the other end to the motor assembly 4. As the handle 72 is rotated, the movable block 71 will move upwards or downwards. When. the movable block 71 is moved upwards, the cable wire 8 will pull the motor assembly 8 outwards, thereby increasing the distance between the conical clutch discs 51 and 52 and the pulley 2.
Conseq~ently, the belt 18 will ~orce the two conical clutch discs 51 and 52 to move away from each other and . so the circ.umference engaged with the belt 18 becomes smaller. Similarly! as the movable block 71 is moved downwards, the cable wire will increase in length;
thus, the motor assembly 8 will move inwards and the tension on the belt 18 will decrease Hence, the conical clutch discs 51 and 52 will move towards each other, increasing the circumference engayed with the belt 18. Since the driving shaft 42 rotates at a ~j3~ ~
constant speed, the pulley 2 will rotate faster when the circumference engaged with the belt 18 is larger.
In a similar way, the pulley 2 will rotate slower when the circumference engaged with the belt 18 is smaller. -In other words, the larger the circumference engagedwith the belt 18, the higher the speed of the track 3, and the smaller the circumference engaged with the belt 18, the lower the speed of the track 3. However, it should be noted that the speed control mechanism is the conical clutch discs 51 and 52 even when the movable block 71 is moved down to its lowest position and the belt 18 wi-ll not get In touch with the driving shaft 42 even when the movable blok 71 is moved up to its highest position.
As a result, the speed of the present invention can be regulated by the speed control mechanism in association with the motor assembly 4. To make up for the deviation of the motor assembly 4 caused by the wearing of the belt 18, the speed control mechanism 200 is further provided with an adjusting screw 81.
Another characteristic of the present invention is that the front end of the base frame 1 can be adjusted in height so as to incline the track 3 to form a slope enabllng the user to run thereon. ~uning to FIGS. 1, 2 ;3~3~7 and 4, an adjustable stand 300 is provided on the base frame 1 for regulating the slope. The adjustable stand 300 is provided with a screw 91 engaged with a U-shaped element 92 which is in turn connected with a tubular member 93 enclosing the second Eixed rod 14. As the screw 91 is turned into the U~shaped element 92, the tubular member 93 will rotate downwards thereby lifting the front portion of the base frame 1 and therefore, inclining the track 3 to form a slope. Normally, the base frame 1 is kept horizontal. Further, the adjustable stand 300 is provided with wheels 94 for preventing the ground from being damaged.
Although this invention has been described with a certain degree of particularity, it is undestood that the present disclosure is made by way of example only and that numerous changes in the detail of construction and the combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as hereinafter claimed.
Claims (2)
1. A running exerciser comprising.
a base frame having a first shaft mounted across front part thereof, a second shaft mounted across rear part thereof, a first fixed rod mounted between front end of the base frame and the first shaft, and a second fixed rod mounted between front end of the base frame and the first fixed rod;
a pair of inverted U-shaped members each mounted at one side of said base frame;
a track in shape of a loop wrapping around the first shaft and the second shaft;
a pulley fastened on one end of said first shaft;
a motor assembly provided with a driving shaft having a key formed integrally therewith and a tubular rod put over said first shaft;
a stop disc put over the driving shaft of the motor assembly;
a first spring enclosing the driving shaft of the motor assembly and bearing against the stop plate;
a pair of clutch discs each having a conical surface and a keyway adapted to the key of the driving rod of the motor assembly, said conical clutch discs being put over said driving shaft with the conical surface thereof facing each other;
a second spring means enclosing the driving shaft of the motor assembly and forcing the conical clutch discs to move towards each other;
a stop plate fixedly connected to free end of the driving shaft of the motor assembly by a screw;
a belt connecting said pulley with said clutch discs;
a speed control mechanism mounted on one of said inverted U-shaped members, said mechanism including a housing having therein a movable block, a screw fixed in said housing and threadedly connected with said movable member, and a cable wire connected at one end with the movable block and at the other end with the motor assembly.
a base frame having a first shaft mounted across front part thereof, a second shaft mounted across rear part thereof, a first fixed rod mounted between front end of the base frame and the first shaft, and a second fixed rod mounted between front end of the base frame and the first fixed rod;
a pair of inverted U-shaped members each mounted at one side of said base frame;
a track in shape of a loop wrapping around the first shaft and the second shaft;
a pulley fastened on one end of said first shaft;
a motor assembly provided with a driving shaft having a key formed integrally therewith and a tubular rod put over said first shaft;
a stop disc put over the driving shaft of the motor assembly;
a first spring enclosing the driving shaft of the motor assembly and bearing against the stop plate;
a pair of clutch discs each having a conical surface and a keyway adapted to the key of the driving rod of the motor assembly, said conical clutch discs being put over said driving shaft with the conical surface thereof facing each other;
a second spring means enclosing the driving shaft of the motor assembly and forcing the conical clutch discs to move towards each other;
a stop plate fixedly connected to free end of the driving shaft of the motor assembly by a screw;
a belt connecting said pulley with said clutch discs;
a speed control mechanism mounted on one of said inverted U-shaped members, said mechanism including a housing having therein a movable block, a screw fixed in said housing and threadedly connected with said movable member, and a cable wire connected at one end with the movable block and at the other end with the motor assembly.
2. A running exerciser as claimed in claim 1, further comprising an adjustable stand mounted on a lower front end of said base frame, said adjustable stand having a screw engaged with a U-shaped element which is in turn connected with a tubular member enclosing the second fixed rod whereby when the screw is turned into the U-shaped element, the tubular member will rotate downwards thereby lifting the front end of the base frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000497002A CA1263877A (en) | 1985-12-05 | 1985-12-05 | Running exerciser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000497002A CA1263877A (en) | 1985-12-05 | 1985-12-05 | Running exerciser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1263877A true CA1263877A (en) | 1989-12-12 |
Family
ID=4132026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000497002A Expired CA1263877A (en) | 1985-12-05 | 1985-12-05 | Running exerciser |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1263877A (en) |
-
1985
- 1985-12-05 CA CA000497002A patent/CA1263877A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |