US20150273267A1 - Adjustable exercise bicycle - Google Patents
Adjustable exercise bicycle Download PDFInfo
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- US20150273267A1 US20150273267A1 US14/228,221 US201414228221A US2015273267A1 US 20150273267 A1 US20150273267 A1 US 20150273267A1 US 201414228221 A US201414228221 A US 201414228221A US 2015273267 A1 US2015273267 A1 US 2015273267A1
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- Prior art keywords
- movable frame
- angle
- frame
- moment
- oriented
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
- A63B22/06—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/012—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using frictional force-resisters
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/22—Resisting devices with rotary bodies
- A63B21/225—Resisting devices with rotary bodies with flywheels
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
- A63B22/06—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement
- A63B22/0605—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement performing a circular movement, e.g. ergometers
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
- A63B22/06—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement
- A63B22/0605—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement performing a circular movement, e.g. ergometers
- A63B2022/0611—Particular details or arrangement of cranks
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2225/00—Miscellaneous features of sport apparatus, devices or equipment
- A63B2225/09—Adjustable dimensions
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2225/00—Miscellaneous features of sport apparatus, devices or equipment
- A63B2225/09—Adjustable dimensions
- A63B2225/093—Height
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
- A63B71/0619—Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
Abstract
An adjustable exercise bicycle includes a fixed frame, a seat, a movable frame, a locking device, a pedal device and an assisting device. The assisting device is arranged between the fixed frame and the movable frame. The assisting device is for forcing the movable frame and generating a first moment about the axis. The total weight of the movable frame and its loading generate a second moment about the axis. The resultant moment of the first moment and the second moment is a third moment which can move the movable frame from a second angle to a first angle when the movable frame is oriented at an unlocked state. The user can force the pedal device against the third moment for moving the movable frame from the first angle to the second angle.
Description
- The application claims priority to Chain Application Serial Number 201310362903, filed Aug. 19, 2013, which is herein incorporated by reference.
- 1. Technical Field
- The present disclosure relates to an indoor exercise apparatus. More particularly, the present disclosure relates to an exercise bicycle having an adjustable distance between the pedal device and the seat.
- 2. Description of Related Art
- The exercise bicycle is one of the common indoor exercise apparatus. Many of these exercise bicycles must accommodate users of varying heights and preferences. Often this adjustment is accomplished by adjusting the position of the seat. However, this kind of exercise bicycles often suffers from several undesirable traits.
- First, the exercise bicycle should leave a reserved space for adjusting the position of a seat to move closer to or far from a pedal device. The reserved space not only increases the total length of the exercise bicycle, but also raises the manufacturing costs.
- Second, the distance between the seat and a console or front handles will be changed when the user adjusts the position of the seat. In other words, the short user will move the seat closer to the pedal device so that the distance between the user and the console or the front handles is shorter; the tall user will move the seat away from the pedal device so that the distance between the user and the console or the front handles is longer. It is inconvenient that the console or the front handles too close or too far from the user to operate or to use. Especially for the tall users who are so far away from the console and the front handles that the screen becomes uncomfortable to view.
- In addition, there are some apparatus can adjust the distance between the movable frame and the seat or switch two different exercising types by changing the position of the movable frame without changing the position of the seat. For instance, an apparatus for exercising upper and lower body portions of a user includes a fixed frame, a seat, a movable frame, a locking device and a crank assembly. The seat is arranged on the fixed frame. The movable frame is pivotally coupled to the fixed frame about a pivot axis and can be swung between a first position and a second position. The locking device is for locking the movable frame between the first position and the second position. The crank assembly is arranged on the movable frame. The crank assembly provides upper body exercise when the movable frame is oriented at the first position. The crank assembly provides lower body exercise when the movable frame is oriented at the second position. In use, the user should grab the movable frame in one hand for rotating it to the desired position and operate the locking device by the other hand for locking the movable frame to change the position of the movable frame. It is laborious and inconvenient for the user to carry at least the weight of the movable frame and the crank assembly and need to repeatedly confirm whether the position is appropriate during such an adjusting process.
- On the other hand, to adjust the position of the seat, the user must disengage the locking device, allowing the seat to move in one or more degrees of freedom. After the desired position is achieved, the locking device is reengaged to return the seat to a fixed position. Nevertheless, some locking devices suffer from safety hazards as it is possible to unintentionally disengage the locking device while the user is still seated.
- Furthermore, the typical locking device has a pin to optionally insert into one of the positioning holes to adjust the position of the seat. This kind of locking device has several merits, like simple structure, low cost, easy operation, etc., but there is still space for improvement. Backlash is typically a result of part clearances needed in the typical locking device. The undesirable backlash would be caused by the clearance between the outer diameter of the pin and the inner diameter of the positioning hole. While this clearance is required for operation, manufacture, and assembly, it causes an undesirable looseness between the seat post and the exercise bicycle. Reducing the clearances between these parts reduces backlash, but at the expense of tighter machine tolerances, which increase the cost of the mechanism
- According to one embodiment of the present invention, an adjustable exercise bicycle includes a fixed frame, a seat, a movable frame, a locking device, a pedal device and an assisting device. The seat is arranged on the fixed frame for providing a user to seat. The movable frame is pivotally coupled to the fixed frame about an axis for being swung between a first angle and a second angle. The locking device is for locking the movable frame at a chosen angle within a swing range of the movable frame. The locking device has a lever arranged within reach on the fixed frame when the user is seating and it is for turning the movable frame from a locked state to an unlocked state. The pedal device is pivotally coupled to the movable frame about a rotating shaft. When the movable frame is oriented at the first angle, the rotating shaft is oriented at a first position. When the movable frame is oriented at the second angle, the rotating shaft is oriented at a second position which is more distant from the seat than the first position. The rotating shaft is swung between the first position and the second position to form a swing track. The assisting device is arranged between the fixed frame and the movable frame. The assisting device is for forcing the movable frame and generating a first moment about the axis. The total weight of the movable frame and its loading generate a second moment about the axis. The resultant moment of the first moment and the second moment is a third moment which can move the movable frame from the second angle to the first angle when the movable frame is oriented at the unlocked state. The user can force the pedal device against the third moment for moving the movable frame from the first angle to the second angle.
- The present invention will be apparent to those skilled in the art by reading the following detailed description of a preferred embodiment thereof, with reference to the attached drawings, in which:
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FIG. 1 is a perspective view of an adjustable exercise bicycle according to the first embodiment of the present invention; -
FIG. 2 is a right side view ofFIG. 1 ; -
FIG. 3A is a left side view ofFIG. 1 when a movable frame is oriented at a first angle; -
FIG. 3B is a left side view ofFIG. 1 when the movable frame is oriented at a second angle; -
FIG. 4A is a force schematic diagram ofFIG. 3A when the movable frame is oriented at the first angle; -
FIG. 4B is a force schematic diagram ofFIG. 3B when the movable frame is oriented at the second angle; -
FIG. 5 is a force schematic diagram of an adjustable exercise bicycle according to the second embodiment of the present invention when a movable frame is oriented at a second angle; -
FIG. 6 is a perspective view of an adjustable exercise bicycle according to the third embodiment of the present invention; -
FIG. 7 is a side view ofFIG. 6 when a movable frame is oriented at a second angle; -
FIG. 8 is an enlarged fragmentary view of a locking device of the adjustable exercise bicycle ofFIG. 3A ; -
FIG. 9 is a cross-sectional view ofFIG. 8 ; and -
FIG. 10 is a cross-sectional view of a locking device of an adjustable exercise bicycle according to the forth embodiment of the present invention. - In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the disclosed embodiments. It will be apparent, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are schematically depicted in order to simplify the drawings.
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FIG. 1 is a perspective view of an adjustable exercise bicycle according to the first embodiment of the present invention.FIG. 2 is a right side view ofFIG. 1 . As shown inFIG. 1 andFIG. 2 , anadjustable exercise bicycle 100 includes a fixedframe 110, aseat 120, amovable frame 130, alocking device 140, apedal device 150 and an assistingdevice 160. Theseat 120 is arranged on the fixedframe 110 for seating and the position of theseat 120 is fixed. The present embodiment uses theseat 120 with abackrest 121. Thecontrol panel 122 is also arranged on the fixedframe 110 for operating or monitoring various parameters during the exercise. Thepedal device 150 is arranged on themovable frame 130. Themovable frame 130 is cooperating with the assistingdevice 160 to have thepedal device 150 be moved related to the fixedframe 110 for adjusting the distance between thepedal device 150 and theseat 120. A user can adjust thepedal device 150 to the proper position according to the user's height and preferences. Besides, the distance between theseat 120 and thecontrol panel 122 or the front handles 123 is fixed due to the position of theseat 120 is fixed. In other words, the distance between theseat 120 and thecontrol panel 122 or the front handles 123 won't change no matter how the user adjusts thepedal device 150. In this way, the problem of tall users being so far away from theconsole panel 122 and the front handles 123 that the screen becomes uncomfortable to view or to operate can be solved. -
FIG. 3A is a left side view ofFIG. 1 when amovable frame 130 is oriented at a first angle.FIG. 3B is a left side view ofFIG. 1 when themovable frame 130 is oriented at a second angle. Referring toFIG. 1 toFIG. 3B , themovable frame 130 is pivotally coupled to the fixedframe 110 about anaxis 131 for being swung between a first angle shown asFIG. 3A and a second angle shown asFIG. 3B . Theaxis 131 is oriented at the bottom of the fixedframe 110. Themovable frame 130 is close to theseat 120 when it is at the first angle and themovable frame 130 is far from theseat 120 when it is at the second angle. - The
locking device 140 is for locking themovable frame 130 at a chosen angle within a swing range of themovable frame 130. The angle between the first angle and the second angle (the swing range) is about sixty degrees in the present embodiment. Thelocking device 140 can lock themovable frame 130 at fifteen different chosen angles including the first angle and the second angle. Specifically, within the swing range, every four degrees is a chosen angle and there are fifteen chosen angles can be chosen including the first angle and the second angle. The concrete structure of thelocking device 140 of the present embodiment will be illustrated and described in more detail later on and there is only a brief description herein. - The
locking device 140 has alever 141 arranged on the fixedframe 110. Thelever 141 is for turning themovable frame 130 from a locked state to an unlocked state. In particular, thelever 141 is oriented within reach on the fixedframe 110 when the user is seated. For example, thelever 141 is oriented below theseat 120. This design is intended to allow the user to operate thelever 141 for the following adjustment without leaving theseat 120. Therefore, the position of thelever 141, such as being oriented in front of theseat 120 on the fixedframe 110 or being oriented at lateral sides of theseat 120, as long as the user can operate thelever 141 without leaving theseat 120, all those positions will not depart from the spirit of designing the lever's position of the present embodiment. - The
pedal device 150 is pivotally coupled to themovable frame 130 and is for providing feet exercise. Thepedal device 150 includes arotating shaft 151 and twopedals 152. Therotating shaft 151 is pivotally coupled to themovable frame 130 and its position is higher than the position of theaxis 131. Twopedals 152 are pivotally coupled to two ends of therotating shaft 151 respectively via two cranks. Thepedal device 150 is coupled to aresistance device 170 having aflywheel 171 and a magnetic resistance set 172. Theflywheel 171 provides the rotary inertia and the magnetic resistance set 172 is for adjusting the resistance during the rotation of theflywheel 171. The relationship between thepedal device 150 and theresistance device 170 has no direct connection to the main feature of the present embodiment. For this reason, there is only a brief description herein. -
FIG. 4A is a force schematic diagram ofFIG. 3A when themovable frame 130 is oriented at the first angle.FIG. 4B is a force schematic diagram ofFIG. 3B when themovable frame 130 is oriented at the second angle. Referring toFIG. 1 toFIG. 4B , thepedal device 150 is arranged on themovable frame 130 so that thepedal device 150 will change its position with themovable frame 130. When themovable frame 130 is oriented at the first angle, therotating shaft 151 is oriented at a first position as shown inFIG. 4A . When themovable frame 130 is oriented at the second angle, therotating shaft 151 is oriented at a second position as shown inFIG. 4B . The distance D1 between the first position and theseat 120 is shorter than the distance D2 between the second position and theseat 120. In other words, the first position is closer to theseat 120 than the second position is. Therotating shaft 151 is swung between the first position and the second position to form a swing track T. - The total weight of the
movable frame 130 and its loading includes the weight of themovable frame 130, the weight of thepedal device 150 and the weight of any object which is arranged on themovable frame 130, like theresistance device 170. The position of the center of gravity C of the total weight won't exceed a vertical line L which is passing through theaxis 131 in the lateral view as shown inFIG. 4A orFIG. 4B . In other words, the position of the center of gravity C is oriented in front of the vertical line L despite the position of themovable frame 130 between the first angle and the second angle. That is, the position of the center of gravity C is always oriented at the left side of the vertical line L and also won't oriented on the vertical line L inFIG. 4A andFIG. 4B . - The assisting
device 160 is arranged between the fixedframe 110 and themovable frame 130 and is for assisting the user to adjust the position of themovable frame 130 related to the fixedframe 110. The assistingdevice 160 is a gas spring and other object like a torsion spring which has buffer or reset function can be used as an alternative. Two ends of the assistingdevice 160 are pivotally coupled to the fixedframe 110 and themovable frame 130 respectively. The assistingdevice 160 applies a force F1 to themovable frame 130 and generates a first moment M1 about theaxis 131. The first moment M1 which is clockwise inFIG. 4A andFIG. 4B (hereinafter referred as an asymptotic rotation) makes themovable frame 130 move close to theseat 120. - Additionally, the total weight of the
movable frame 130 and its loading generate a second moment M2 about theaxis 131. The second moment M2 which is anticlockwise inFIG. 4A andFIG. 4B (hereinafter referred as a distanced rotation) makes themovable frame 130 move far from theseat 120. The rotating directions of the first moment M1 and the second moment M2 are contrary and the resultant moment of the first moment M1 and the second moment M2 is a third moment M3. As a result of the magnitude of the second moment M2 is slightly less than the magnitude of the first moment M1, the third moment M3 has the same rotating direction (the asymptotic rotation) with the first moment M1. - Specifically, without forcing by any other forces, the
movable frame 130 is swung from the second angle to the first angle by the third moment M3, i.e. themovable frame 130 will be moved close to theseat 120 when the user presses thelever 141 to let themovable frame 130 be oriented at the unlocked state. On the other hands, if the user wants to increase the distance between theseat 120 and thepedal device 150, the user just seats on theseat 120 and applies a force F3 to thepedals 152 by feet so that the force F3 will generate a fourth moment M4 (the distanced rotation) about theaxis 131. Themovable frame 130 will be moved away from theseat 120. Because the second moment M2 is slightly less than the magnitude of the first moment M1, the third moment M3 can be easily overcome by the fourth moment M4. Therefore, themovable frame 130 will be swung from the first angle to the second angle to leave away from theseat 120. When themovable frame 130 is swung to the proper position, the user can operate thelever 141 to fix the position of themovable frame 130 on the fixedframe 110. The user doesn't need to force themovable frame 130 for adjusting unless the user wants to increase the distance between thepedal device 150 and theseat 120. If the user wants to decrease the distance between thepedal device 150 and theseat 120, the user only has to operate thelever 141 but doesn't need to operate or to force themovable frame 130. In this configuration, the user can adjust thepedal device 150 to the proper position without leaving theseat 120. It is not only very convenient and effort-saving, but also very easy to use for the user. - It is worthy to note that the magnitude of the first moment M1 and the second moment M2 are varying with the position of the
movable frame 130. In details, the magnitude of the moment is decided by the magnitude of the force and the moment arm. Either changing the magnitude of the force or the moment arm can change the magnitude of the moment. First, the first moment M1 is decided by the force F1 and the vertical distance between the force F1 and the axis 131 (moment arm.) The assistingdevice 160 is a gas spring in the present embodiment, the force F1 provided by the gas spring is varying with the position of themovable frame 130 and so dose the vertical distance between the force F1 and theaxis 131. Hence, the magnitude of the first moment M1 may remain unchanged or varying with the position of themovable frame 130. On the other hand, the second moment M2 is decided by the total weight F2 and the vertical distance between the total weight F2 and the axis 131 (moment arm.) The total weight F2 remains unchanged but the vertical distance between the total weight F2 and theaxis 131 will increase or decrease with the movement of themovable frame 130. According to the orientation ofFIG. 4A andFIG. 4B , the vertical distance between the total weight F2 and theaxis 131 is shorter when themovable frame 130 is at the first angle, and the vertical distance between the total weight F2 and theaxis 131 is longer when themovable frame 130 is at the second angle. Although the total weight F2 remains unchanged, the second moment M2 will gradually increase with the movement of themovable frame 130 from the first angle to the second angle due to the vertical distance between the total weight F2 and theaxis 131 is varying. In short, the magnitude of the second moment M2 will gradually increase when themovable frame 130 moves away from theseat 120. However, either the first moment M1 or the second moment M2 remains unchanged or varies with the position of themovable frame 130, the magnitude of the second moment M2 is always slightly less than the magnitude of the first moment M1 during the movement of themovable frame 130. Therefore, the resultant moment (the third moment M3) can force themovable frame 130 to move closer to theseat 120 when themovable frame 130 is oriented at the unlocked state. - In practice, the foregoing discussions are based on: the position of the center of gravity C is oriented in front of the vertical line L and also won't oriented on the vertical line L despite the position of the
movable frame 130 between the first angle and the second angle. That is, the second moment M2 provided by the total weight F2 is always the distanced rotation. However, the center of gravity C may be designed to be oriented behind the vertical line L (i.e. the right side of the vertical line L inFIG. 4A orFIG. 4B ) or be oriented right on the vertical line L when themovable frame 130 is oriented at the first angle in other embodiment. In this situation, the relationships among those forces are slightly different from the foregoing discussions. -
FIG. 5 is a force schematic diagram of an adjustable exercise bicycle according to the second embodiment of the present invention when a movable frame is oriented at a second angle. Basically, the theory of the present embodiment is the same with the foregoing embodiment when the center of gravity C′ is oriented in front of the vertical line L′. The main difference between the present embodiment and the foregoing embodiment is that the center of gravity C′ of the present embodiment can cross the vertical line L′. When the center of gravity C′ is oriented behind the vertical line L′, a force F1′ will generate a first moment M1′ about anaxis 131′, and a total weight F2′ of themovable frame 130′ and its loading will generate a second moment M2′ about theaxis 131′. The first moment M1′ and the second moment M2′ are both the asymptotic rotation. That is, the first moment M1′ and the second moment M2′ can both force themovable frame 130′ to move close to theseat 120′. This kind of situation is different from the first moment M1 which has contrary rotating direction to the second moment M2 when the center of gravity C′ is oriented in front of the vertical line L′. The resultant moment of the first moment M1′ and the second moment M2′ is a third moment M3′ which is the asymptotic rotation. To increase the distance between theseat 120′ and thepedal device 150′, the user has to apply a force F3′ which is larger than the force F3 for generating a larger fourth moment M4′ to overcome the third moment M3′ to move themovable frame 130′ from the first angle which is close to theseat 120′ to the second angle which is far from theseat 120′. On the other hand, the total weight F2′ cannot generate the second moment M2′ about theaxis 131′ when the center of gravity C is oriented right on the vertical line L′. There is only the force F1′ which is provided by the assistingdevice 160′ applying on themovable frame 130′. The force F1′ generates the first moment M1′ (the asymptotic rotation) about theaxis 131′. If the user wants to increase the distance between theseat 120′ andpedal device 150′, the user has to provide a force for overcoming the first moment M1′ to move themovable frame 130′ from the first angle which is close to theseat 120′ to the second angle which is far from theseat 120′. The magnitude of the force herein is between the magnitude of the force F3′ and the magnitude of the force F3 of the first embodiment. General speaking, the vertical line L′ is a critical line for the center of gravity C′. When the center of gravity C′ is behind the vertical line L′, the farther is the vertical distance between the center of gravity C′ and the vertical line L′, the larger is the magnitude of the force which is provided by the user to move themovable frame 130′ away from theseat 120′. Overall, the user merely has to apply larger force on themovable frame 130′ to move it away from theseat 120′ whether the center of gravity C′ is behind or is oriented right on the vertical line L′, the rest functions of the second embodiment are the same with the first embodiment. -
FIG. 6 is a perspective view of an adjustable exercise bicycle according to the third embodiment of the present invention.FIG. 7 is a side view ofFIG. 6 when a movable frame is oriented at a second angle. The principles of anadjustable exercise bicycle 200 of the present embodiment are substantially the same with theadjustable exercise bicycle 100 of the first embodiment. Theadjustable exercise bicycle 200 includes a fixedframe 210, aseat 220, amovable frame 230, alocking device 240, apedal device 250 and an assistingdevice 260. Theseat 220 is arranged on the fixedframe 210. Themovable frame 230 is pivotally coupled to the fixedframe 210 about anaxis 231. The difference between theaxis 131 and theaxis 231 is that theaxis 231 is oriented at the top of the fixedframe 210. Themovable frame 230 can be swung related to the fixedframe 210 between a first angle and a second angle. Similarly, themovable frame 230 is close to theseat 220 when it is oriented at the first angle and themovable frame 230 is far from theseat 220 when it is oriented at the second angle. - The
locking device 240 is for locking themovable frame 230 on the fixedframe 210 between the first angle and the second angle. Thelocking device 240 includes apositioning frame 241, apin 242, alever 243, a cable (not shown) and a spring (not shown.) Thepositioning frame 241 is curved and arranged on the fixedframe 210 along the direction of the movement of themovable frame 230. Thepositioning frame 241 hasseveral positioning holes 244 which are equidistant. Thepin 242 is arranged on themovable frame 230 and can insert into one of the positioning holes 244 for fixing the related position between themovable frame 230 and the fixedframe 210. Thelever 243 is arranged within reach on the fixedframe 210 when the user is seated and is for turning themovable frame 230 from a locked state to an unlocked state. Thelever 243 is arranged in front of theseat 220. The cable is coupled to thelever 243 and thepin 242. Thepin 242 will be pulled out of thepositioning hole 244 when the user presses thelever 243. Conversely, thepin 242 is pushed by the spring to insert into theclosest positioning hole 244 when the user releases thelever 243 and slightly moves themovable frame 230 for fixing the related position between themovable frame 230 and the fixedframe 210 again. Other technologies to the present invention, a person has ordinary skill in the art to the field of locking device should complete it without undue experimentations, so that the details are not narrated herein. - The
pedal device 250 includes arotating shaft 251 and twopedals 252. Therotating shaft 251 is pivotally coupled to themovable frame 230 and its position is lower than the position of theaxis 231. When themovable frame 230 is oriented at the first angle, therotating shaft 251 is oriented at a first position. When themovable frame 230 is oriented at the second angle, therotating shaft 251 is oriented at a second position. The distance between the first position and theseat 220 is shorter than the distance between the second position and theseat 220. In other words, the first position is close to theseat 220 and the second position is far from theseat 220. Furthermore, thepedal device 250 of the present embodiment is coupled to aresistance device 270 which has a flywheel and a magnetic resistance set. The flywheel provides the rotary inertia and the magnetic resistance set is for adjusting the resistance during the rotation of the flywheel. The concrete structure and relationship between thepedal device 250 and theresistance device 270 are substantially the same with the foregoing embodiments, so there is only a brief description herein. - The total weight of the
movable frame 230 and its loading includes the weight of themovable frame 230, the weight of thepedal device 250 and the weight of any object which is arranged on themovable frame 230, like theresistance device 270. The position of the center of gravity C″ of the total weight won't exceed a vertical line L″ which is passing through theaxis 231 in the lateral view as shown inFIG. 7 . In other words, the position of the center of gravity C″ is oriented in front of the vertical line L″ despite the position of themovable frame 230 between the first angle and the second angle. That is, the total weight of themovable frame 230 and its loading generate a second moment about theaxis 231. The second moment is always the asymptotic rotation. - The assisting
device 260 is arranged between the fixedframe 210 and themovable frame 230 and is for assisting the user to adjust the position of themovable frame 230 related to the fixedframe 210. The assistingdevice 260 applies a force to themovable frame 230 and generates a first moment about theaxis 231. The first moment is the distanced rotation which makes themovable frame 230 move away from theseat 220. - In addition, the total weight of the
movable frame 230 and its loading generate the second moment about theaxis 231. The second moment makes themovable frame 230 move close to theseat 220 when themovable frame 230 is oriented at the unlocked state. The rotating directions of the first moment and the second moment are contrary and the resultant moment of the first moment and the second moment is a third moment. As a result of the magnitude of the first moment is slightly less than the magnitude of the second moment, the third moment is the asymptotic rotation the same with the second moment. - More particularly, without forcing by any other force, the
movable frame 230 is swung from the second angle which is far from theseat 220 to the first angle which is close to theseat 220 by the third moment when the user presses thelever 243 to let themovable frame 230 be oriented at the unlocked state. On the other hands, if the user wants to increase the distance between theseat 220 and thepedal device 250, the user just seats on theseat 220 and applies a force to thepedals 252 by feet so that the force will generate a fourth moment (the distanced rotation) about theaxis 231. Themovable frame 130 will be moved away from theseat 220. The third moment of the present embodiment is the same with the third moment M3 which can be easily overcame by the fourth moment so that themovable frame 230 can be swung from the first angle which is close to theseat 220 to the second angle which is far from theseat 220. - According to the aforementioned embodiments, the adjustable exercise bicycle of the present invention sets the adjustable object on the pedal device but not on the seat so that the total length of the exercise bicycle will be decreased and also can lower the manufacturing cost of the exercise bicycle. The fixed seat is safer than the adjustable seat. The fixed seat can avoid the safety hazards as it is possible to unintentionally disengage the locking device while the user is still seated and also solves the problem of the tall users are so far away from the console and the front handles that the screen becomes uncomfortable to operate or to view. Because of the designs of the movable frame and the assisting device, the user can adjust the distance between the pedal device and the seat without leaving the seat. More conveniently, the user doesn't need to force the movable frame for adjusting unless the user wants to increase the distance between the pedal device and the seat. If the user wants to decrease the distance between the pedal device and the seat, the user only has to operate the lever but doesn't need to operate or force the movable frame. It is very convenient and effort-saving.
- Back to the
adjustable exercise bicycle 100 of the first embodiment, referringFIG. 4B , the dot portion inFIG. 4B is the schematic diagram of themovable frame 130 oriented at the first angle. The second position is at the lower front of the first position. The swing track T of therotating shaft 151 is upper right to lower left according to the orientation of theFIG. 4B for taking into account the ergonomics and the operational comfort of the user. The user needs to apply the force on themovable frame 130 when the user wants to move themovable frame 130 from the first angle to the second angle. For the seated user, the most comfortable direction for feet to extend and apply force on themovable frame 130 is from back to front and from top to bottom. In order to make sure that the user's feet extend and apply force like the foregoing direction in the whole adjusting process, the present embodiment has the following design: The top center of theseat 120 and therotating shaft 151 are in a straight line. There is a changing angle between the straight line and the horizontal plane. The changing angle will be changed with themovable frame 130 being moved from the first angle to the second angle. The variation of the changing angle won't exceed fifteen degrees when themovable frame 130 is swung between the first angle and the second angle. Specifically, the top center of theseat 120 and therotating shaft 151 which is oriented at the first position are in a straight line X1. The top center of theseat 120 and its tangent to the swing track T are in a straight line X2. The changing angle θ between the straight line X1 and the straight line X2 is the largest changing angle which won't exceed fifteen degrees during the movement of themovable frame 130 from the first angle to the second angle. The straight line is upper back to lower front in the whole adjusting process. Hence, the ergonomics won't vary from the adjusting process of themovable frame 130 and the operational comfort will remain the same even for different users. - In particular, there are other embodiments can achieve the forgoing effect as the first embodiment. For example, set the position of the axis higher than the position of the swing track and also let the first position which is near the seat is higher than the second position which is far from the seat. Therefore, the seated user can apply the force from upper back to lower front which is the most comfortable direction for the feet extension. In short, the swing track of this example has the same beneficial effects as the swing track T of the first embodiment.
- Besides, the user's posture while using the pedal device and the distance between the user and the pedal device have been specially designed to meet the ergonomic design and many limitations of the mechanism design. In other words, the designer not only has to consider the ergonomics and the operational comfort of the user during the adjusting process, like the height and the positional relationship of the swing track T in the first embodiment, but also has to pay attention to space utilization, the height of the pedal device from the ground (to avoid the pedals hitting the ground while using) and other mechanism design factors. Under the circumstance of the swing track is roughly the same height from the ground and the positional relationship between the swing track and the user is broadly unchanged, setting the axis below the swing track, as the first embodiment, is a better practice of more space-saving, having lower center of gravity and high stability.
-
FIG. 8 is an enlarged fragmentary view of a locking device of the adjustable exercise bicycle ofFIG. 3A .FIG. 9 is a cross-sectional view ofFIG. 8 . Please refer toFIG. 3A ,FIG. 8 andFIG. 9 . In order to solve the stability problem of the adjustable seat, the present embodiment not only sets the adjustable object on thepedal device 150, but also improves thelocking device 140 which is for fixing the related position between themovable frame 130 and the fixedframe 110. Themovable frame 130 can be firmly locked on the fixedframe 110 and can avoid the damage of the undesirable looseness when themovable frame 130 is oriented at the locked state. Thelocking device 140 includes apositioning frame 142, a restrictedframe 143, alinkage member 144, twoelastic member 145, afirst pin 146 and asecond pin 147. - The
positioning frame 142 is curved along a first direction T1 and is arranged on the fixedframe 110. Thepositioning frame 142 has sixteen positioning holes which are arranged along the first direction. Each positioning hole has a first hole wall and a second hole wall. InFIG. 8 , afirst positioning hole 1421 has afirst hole wall 1421 a and a second hole wall 1421 b, and asecond positioning hole 1422 has a first hole wall 1422 a and asecond hole wall 1422 b. Thefirst hole wall 1421 a, 1422 a and thesecond hole wall 1422 a, 1422 b are respectively oriented on two sides of thefirst positioning hole 1421 and thesecond positioning hole 1422 corresponding to two ends of the first direction T1. - The restricted
frame 143 is arranged on themovable frame 130 and can be swung between the first angle and the second angle along the first direction T1. The restrictedframe 143 is a rectangular frame having twoupper openings 148 and twolower openings 149. Two sides of eachlower opening 149 are a first resistingportion 149 a and a second resistingportion 149 b corresponding to the two ends of the first direction T1. - The
linkage member 144 is arranged inside the rectangular restrictedframe 143. Thelinkage member 144 can be moved between a locked position which is near thepositioning frame 142 and an unlocked position which is far from thepositioning frame 142 along a second direction T2. The second direction T2 is perpendicular to the tangential direction of the first direction T1. Furthermore, thelever 141 can move thelinkage member 144 from the locked position to the unlocked position. In other words, thelinkage member 144 is oriented at the locked position when themovable frame 130 is oriented at the locked state, and thelinkage member 144 is oriented at the unlocked position when themovable frame 130 is oriented at the unlocked state. - The two
elastic members 145 are coupled between the restrictedframe 143 and thelinkage member 144 and are pushing thelinkage member 144 toward thepositioning frame 142 along the second direction T2. In brief, theelastic members 145 are both compression springs. Theelastic members 145 will push thelinkage member 144 toward the locked position without any other force. In use, thelever 141 is coupled to thelinkage member 144 via thecable 1411. Thecable 1411 will force thelinkage member 144 down along the second direction T2 to pressure theelastic members 145 and then move to the unlocked position. If the user releases thelever 141, theelastic members 145 will push thelinkage member 144 toward the locked position along the second direction T2. It should be noted that the purpose of using theelastic members 145 is for pushing thelinkage member 144 toward the locked position when thelinkage member 144 is moved to the unlocked position. Therefore, the number of theelastic members 145 is not limited in two. With the proper adjustment of the position of the elastic member, using only one elastic member can achieve the same efficacy with using two elastic members. - The
first pin 146 and thesecond pin 147 are pivotally coupled to thelinkage member 144. Thefirst pin 146 and thesecond pin 147 both pass through the restrictedframe 143 and respectively insert into the correspondingupper openings 148 and thelower openings 149. Thefirst pin 146 has afirst guiding plane 146 a and a first pressedportion 146 b. Thesecond pin 147 has afirst guiding plane 147 a and a first pressedportion 147 b. - The
first guiding plane 146 a is oriented at one end of thefirst pin 146 which is near thepositioning frame 142 and thesecond guiding plane 147 a is oriented at one end of thesecond pin 147 which is near thepositioning frame 142. Thefirst guiding plane 146 a and thesecond guiding plane 147 a are not parallel nor perpendicular to the second direction T2. Besides, the first guidingplane 146 a and thesecond guiding plane 147 a of the present embodiment are beveled and both has an angle with the second direction T2. Specially, thesecond guiding plane 147 a is face to or opposite to the first guidingplane 146 a. It can be said that the sign of the slopes of the first guidingplane 146 a and thesecond guiding plane 147 a are different. Thefirst guiding plane 146 a is opposite to thesecond guiding plane 147 a in the present embodiment. There is a minor image relationship between the first guidingplane 146 a and thesecond guiding plane 147 a about an axis A. Despite the sign of the slopes of the first guidingplane 146 a and thesecond guiding plane 147 a are different, their absolute value are the same. Moreover, there are more detail description about the first guidingplane 146 a is face to thesecond guiding plane 147 a in the following fourth embodiment. - Back to the present embodiment, the first pressed
portion 146 b is farther from thepositioning frame 142 than the first guidingplane 146 a, and the second pressedportion 147 b is also farther from thepositioning frame 142 than thesecond guiding plane 147 a. The first pressedportion 146 b is oriented at the outer side of the other end of thefirst pin 146 and the second pressedportion 147 b is oriented at the outer side of the other end of thesecond pin 147. - The
first guiding plane 146 a will touch thefirst hole wall 1421 a of thefirst positioning hole 1421 and thesecond guiding plane 147 a will touch thesecond hole wall 1422 b of thesecond positioning hole 1422 when thefirst pin 146 and thesecond pin 147 are moved by thelinkage member 144 from the bottom up into thepositioning hole 1421. As the inserting process of thefirst pin 146 and thesecond pin 147, the first guidingplane 146 a is forced and guided by thefirst hole wall 1421 a so that thefirst pin 146 will rotate clockwise and thesecond guiding plane 147 a is forced and guided by thesecond hole wall 1422 b so that thesecond pin 147 will rotate anticlockwise. The first pressedportion 146 b will be stopped by the first resistingportion 149 a when thefirst pin 146 rotates slightly and the second pressedportion 147 b will be stopped by the second resistingportion 149 b when thesecond pin 147 rotates slightly. While thelinkage member 144 is oriented at the locked position, the first guidingplane 146 a engages with thefirst hole wall 1421 a of thefirst positioning hole 1421 at a first engaged position E1, the first pressedportion 146 b engages with the first resistingportion 149 a of the restrictedframe 143 at a second engaged position E2, thesecond guiding plane 147 a engages with thesecond hole wall 1422 b of thesecond positioning hole 1422 at a third engaged position E3 and the second pressedportion 147 b engages with the second resistingportion 149 b of the restrictedframe 143 at a fourth engaged position E4. The first engaged position El and the second engaged position E2 are oriented at the outer side of thefirst pin 146 for restricting the leftward displacement of thefirst pin 146. The third engaged position E3 and the fourth engaged position E4 are oriented at the outer side of thesecond pin 147 for restricting the rightward displacement of thesecond pin 147. Hence, themovable frame 130 cannot be moved along the first direction T1 and can be locked firmly on the fixedframe 110. - It should be noted that the
movable frame 130 will have a smaller minimum adjusting angle, if thefirst pin 146 and thesecond pin 147 insert into thefirst positioning hole 1421 and thesecond positioning hole 1422 respectively. More specifically, themovable frame 130 can be moved only four degrees to reach the next chosen angle when thefirst pin 146 and thesecond pin 147 are pulled out of thefirst positioning hole 1421 and thesecond positioning hole 1422 respectively. That is, the minimum adjusting angle of themovable frame 130 is four degrees. In this way, themovable frame 130 can be locked at fifteen different chosen angles and there are fifteen different distances between thepedal device 150 and theseat 120 for different users. However, thefirst positioning hole 1421 and thesecond positioning hole 1422 can be combined together as a larger positioning hole for inserting by both thefirst pin 146 and thesecond pin 147 in other embodiment. The larger positioning hole also has a first hole wall which engages with the first guidingplane 146 a of thefirst pin 146 and a second hole wall which engages with thesecond guiding plane 147 a of thesecond pin 147. Although the amount of the chosen angle of the present embodiment which has the larger positioning hole is smaller than the first embodiment, the minimum adjusting angle of themovable frame 130 of the present embodiment is larger than the first embodiment so that the user can adjust greater distance between thepedal device 150 and theseat 120 each time. In addition, the second engaged position E2 and the fourth engaged position E4 not only can be oriented below thepivot shaft 144 a but also can be oriented above thepivot shaft 144 a according to the orientation ofFIG. 8 . In other words, the first pressedportion 146 b can engage with the first resistingportion 148 a of theupper opening 148 and the second pressedportion 147 b can engage with the second resistingportion 148 b of theupper opening 148 to have a new second engaged position and a new fourth engaged position. Therefore, the first pressedportion 146 b and the second pressedportion 147 b are not invariable portions of thefirst pin 146 and thesecond pin 147 but merely refer to somewhere offirst pin 146 and thesecond pin 147 pressed by the restrictframe 143. Overall, thefirst pin 146 and thesecond pin 147 engage with thefirst positioning hole 1421, thesecond positioning hole 1422 and the restrictframe 143 at four engaged positions. The spirit of thelocking device 140 is that the four engaged positions restrict the displacement of thefirst pin 146 and thesecond pin 147 on the first direction T1. -
FIG. 10 is a cross-sectional view of a locking device of an adjustable exercise bicycle according to the forth embodiment of the present invention. The present embodiment is substantially the same with the foregoing embodiments. The main different between the present embodiment and the foregoing embodiments is that the first guidingplane 146 a′ is face to thesecond guiding plane 147 a′ in the present embodiment. In this way, the first guidingplane 146 a′ will touch thefirst hole wall 1421 a′ of thefirst positioning hole 1421′ and thesecond guiding plane 147 a′ will touch thesecond hole wall 1422 b′ of thesecond positioning hole 1422′ when thefirst pin 146′ and thesecond pin 147′ are moved by thelinkage member 144′ from the bottom up into thepositioning hole 1421′. As the inserting process of thefirst pin 146′ and thesecond pin 147′, the first guidingplane 146 a′ is forced and guided by thefirst hole wall 1421 a′ so that thefirst pin 146′ will rotate anticlockwise and thesecond guiding plane 147 a′ is forced and guided by thesecond hole wall 1422 b′ so that thesecond pin 147′ will rotate clockwise. The first pressedportion 146 b′ will be stopped by the first resistingportion 149 a′ when thefirst pin 146′ rotates slightly and the second pressedportion 147 b′ will be stopped by the second resistingportion 149 b′ when thesecond pin 147′ rotates slightly. While thelinkage member 144′ is oriented at the locked position, the first guidingplane 146 a′ engages with thefirst hole wall 1421 a′ of thefirst positioning hole 1421′ at a first engaged position El', the first pressedportion 146 b′ engages with the first resistingportion 149 a′ of the restrictedframe 143′ at a second engaged position E2′, thesecond guiding plane 147 a′ engages with thesecond hole wall 1422 b′ of thesecond positioning hole 1422′ at a third engaged position E3′ and the second pressedportion 147 b′ engages with the second resistingportion 149 b of the restrictedframe 143′ at a fourth engaged position E4′. In particular, the first engaged position El' and the second engaged position E2′ are oriented at the inner side of thefirst pin 146′ and the third engaged position E3 and the fourth engaged position E4 are oriented at the inner side of thesecond pin 147 in the present embodiment. Besides, other effects of the present embodiment are the same as the foregoing embodiments. - According to the aforementioned embodiments, under the circumstance that the reserved clearances are required for operation, manufacture and assembly, the locking device of the present invention prevents the undesirable collision and vibration between the components of the locking device by the design of the four engaged positions. The locking device of the present invention further improves the stability and the service life of its components without raising the cost or reducing the clearances.
- It is worthy to note that, with the changes and the combinations of the components of the locking device, the locking device of the present invention not only can be applied in the exercise bicycle, but also can be applied in other exercise equipments which need to lock the relative position between two frames firmly. For example, adjustable seats of various exercise equipments. The specific examples of the changes and the combinations of the components of the locking device, such as the first direction is not restricted to be curved. The first direction varies from different way that the movable frame is swung related to the fixed frame. For instance, the movable frame is swung related to the fixed frame so that the first direction is curved. If the movable frame is moved horizontally related to the fixed frame, the first direction is horizontal. Furthermore, the restrict frame is not limited as a rectangular frame and is not necessarily to have an opening. The restrict frame can be designed as a long plate as the positioning frame. The long plate has a notch which can contain the first pin and the second pin. The related two sides of the inner side of the notch are the first resisting portion and the second resisting portion respectively. The first pressed portion and the second pressed portion can engage with the first resisting portion and the second resisting portion respectively when the linkage member is oriented at the locked position. Therefore, the restrict frame which is the long plate with the notch can achieve the efficacy of locking the movable frame on the fixed frame firmly. In addition, whether the absolute values of the first guiding plane and the second guiding plane are the same, the first guiding plane and the second guiding plane are beveled or even have curved surfaces, as long as the first guiding plane and the second guiding plane can engage with the first hole wall and the second hole wall respectively and they are face to or opposite to each other, the main proper of the locking device of the present invention will remain unchanged.
- It will be apparent to those skilled in the art that various modifications and variations can be made to the structure of the present invention without departing from the scope or spirit of the invention. In view of the foregoing, it is intended that the present invention cover modifications and variations of this invention provided they fall within the scope of the following claims and their equivalents.
Claims (14)
1. An adjustable exercise bicycle, comprising:
a fixed frame;
a seat arranged on the fixed frame;
a movable frame pivotally coupled to the fixed frame about an axis for being swung between a first angle and a second angle;
a locking device located between the movable frame and the fixed frame for locking the movable frame at a chosen angle between the first angle and the second angle, the locking device having a control member arranged within reach of a user on the seat, the control member controlling the movable frame between a locked state and an unlocked state;
a pedal device pivotally coupled to the movable frame via a rotating shaft, the rotating shaft being at a first position when the movable frame is oriented at the first angle and at a second position when the movable frame is oriented at the second angle, the second position being more distant from the seat than the first position; and
an assisting device arranged between the fixed frame and the movable frame, the assisting device generating a first moment about the axis;
wherein a second moment about the axis is generated from the movable frame and the resultant moment of the first moment and the second moment is a third moment , the third moment being configured to be able to move the movable frame from the second angle toward the first angle when the movable frame is at the unlocked state.
2. The adjustable exercise bicycle of claim 1 , wherein the second position is at the lower front of the first position.
3. The adjustable exercise bicycle of claim 2 , wherein the top center of the seat and the rotating shaft define a straight line, the variation of an angle between the straight line and the horizontal plane being less than fifteen degrees in the lateral view when the movable frame is swung between the first angle and the second angle.
4. The adjustable exercise bicycle of claim 2 , wherein the rotating shaft is swung between the first position and the second position to form a swing track, the axis being located below the swing track.
5. The adjustable exercise bicycle of claim 1 , wherein the rotating shaft is swung between the first position and the second position to form a swing track, the axis being located below the swing track.
6. The adjustable exercise bicycle of claim 5 , wherein the direction of the second moment is the same as the direction of the first moment when the rotating shaft is oriented at the first position.
7. The adjustable exercise bicycle of claim 5 , wherein the direction of the second moment is opposite to the direction of the first moment when the rotating shaft is oriented at the second position.
8. The adjustable exercise bicycle of claim 1 , wherein the rotating shaft is swung between the first position and the second position to form a swing track, the position of the axis being higher than the position of the swing track.
9. The adjustable exercise bicycle of claim 1 , wherein the assisting device is a gas spring having two ends which are pivotally coupled to the fixed frame and the movable frame respectively.
10. The adjustable exercise bicycle of claim 1 , the locking device further comprising:
a positioning frame arranged on the fixed frame and having several positioning holes which are arranged along a first direction, each positioning hole having a first hole wall and a second hole wall;
a restricted frame arranged on the movable frame and configured to be swung between the first angle and the second angle along the first direction, the restricted frame having a first resisting portion and a second resisting portion;
a linkage member selectively moveable between a locked position which is near the positioning frame and an unlocked position which is far from the positioning frame along a second direction, the control member being configured to move the linkage member from the locked position to the unlocked position;
at least one elastic member coupled between the restricted frame and the linkage member and pushing the linkage member toward the positioning frame;
a first pin pivotally coupled to the linkage member and comprising:
a first guiding plane oriented at one end of the first pin which is near the positioning frame and being not parallel nor perpendicular to the second direction, the first guiding plane engaging with the first hole wall of the positioning hole when the linkage member is oriented at the locked position; and
a first pressed portion being far from the positioning frame than the first guiding plane, the first pressed portion engaging with the first resisting portion when the linkage member is oriented at the locked position; and
a second pin pivotally coupled to the linkage member and comprising:
a second guiding plane oriented at one end of the second pin which is near the positioning frame and being not parallel nor perpendicular to the second direction, the second guiding plane engaging with the second hole wall of the positioning hole when the linkage member is oriented at the locked position; and
a second pressed portion being far from the positioning frame than the second guiding plane, the second pressed portion engaging with the second resisting portion when the linkage member is oriented at the locked position.
11. The adjustable exercise bicycle of claim 10 , wherein the first guiding plane and the second guiding plane are beveled.
12. The adjustable exercise bicycle of claim 10 , wherein the first guiding plane engages with the first hole wall of one of the positioning holes and the second guiding plane engages with the second wall hole of another positioning hole which is near the foregoing positioning hole when the linkage member is oriented at the locked position.
13. The adjustable exercise bicycle of claim 10 , wherein the second guiding plane is face to the first guiding plane.
14. The adjustable exercise bicycle of claim 10 , wherein the second guiding plane is opposite to the first guiding plane.
Priority Applications (1)
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US14/228,221 US20150273267A1 (en) | 2014-03-27 | 2014-03-27 | Adjustable exercise bicycle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US14/228,221 US20150273267A1 (en) | 2014-03-27 | 2014-03-27 | Adjustable exercise bicycle |
Publications (1)
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US20150273267A1 true US20150273267A1 (en) | 2015-10-01 |
Family
ID=54188902
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US14/228,221 Abandoned US20150273267A1 (en) | 2014-03-27 | 2014-03-27 | Adjustable exercise bicycle |
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US (1) | US20150273267A1 (en) |
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