KR20220111398A - Freewheel adjustable wheels and fitness bike therewith - Google Patents

Abstract

The present invention relates to a wheel with an adjustable freewheel system and an exercise bike having the same. More specifically, the present invention relates to a wheel with an adjustable freewheel system comprising: a rotary gear portion which rotates through the power transmitted from pedal portions and which is provided with a gear along the outer circumference; a case portion supporting the rotary gear portion so as to enable the same to rotate; a first gear portion which is rotatably installed on the rotary gear portion; a second gear portion which is located between the first gear portion and the case portion and which is fixed to the rotary gear portion; and a roller portion which is located between the rotary gear portion and the case portion.

Description

Freewheel adjustable wheel and fitness bike having same

The present invention relates to a freewheel adjustable wheel capable of controlling whether power of the pedal is transmitted to the wheel when the pedal is rotated in the reverse direction, and a health bicycle having the same.

In general, as an indoor exercise device for strengthening muscle strength, a weight device for strengthening muscle strength and an aerobic exercise device for strengthening cardiopulmonary function are widely used as fitness equipment.

Aerobic exercise equipment includes a treadmill that allows users to walk or run on a caterpillar track, a fitness bike that can perform cardiopulmonary exercise while strengthening leg muscles by rotating pedals, and a stepper to provide the effect of climbing stairs. is broadly divided into

The fitness bike is installed in a designated place, and the wheel can be rotated by the action of stepping on the pedal to exercise. Such a fitness bike can be divided into a spinning bike capable of performing a spinning exercise, and an indoor bike that rotates the wheel by rotating the pedal in a forward direction like a bicycle.

A spinning bicycle uses a non-freewheel structure due to its characteristics of pedaling, and an indoor bicycle uses a freewheel structure.

In the case of a non-freewheel structure applied to a spinning bicycle, when the pedal is rotated in the forward direction and when the pedal is rotated in the reverse direction, power is transmitted to the wheel, so that the wheel rotates.

In addition, in a freewheel structure applied to an indoor bicycle, power is transmitted to the wheel only when the pedal is rotated in the forward direction, and power is not transmitted to the wheel when the pedal is rotated in the reverse direction.

Conventionally, since the power transmission structure of the spinning bicycle and the indoor bicycle is different, when the spinning exercise and the bicycle exercise are alternately performed, the spinning bicycle and the indoor bicycle must be purchased respectively, so there is a problem in that the purchase cost of the exercise equipment increases. Therefore, there is a need to improve it.

The background technology of the present invention is published in Republic of Korea Patent Publication No. 10-1641429 (registered on July 14, 2016, title of the invention: spinning bicycle).

It is an object of the present invention to provide a freewheel adjustable wheel capable of selectively using a freewheel function and a health bicycle having the same.

It is also an object of the present invention to provide a freewheel adjustable wheel capable of performing a spinning exercise and a bicycle exercise as one exercise device, and a health bicycle having the same.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned may be understood by the following description, and will be more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the appended claims.

A freewheel adjustable wheel and a health bike having the same according to the present invention for solving the above-described problems, controlling the freewheel operation by an operation in which the gear of the first gear part overlaps or does not overlap the gear of the second gear part technical features.

Specifically, the gear of the first gear part rotating at a set angle together with the outer case part overlaps the gear of the second gear part and operates in freewheel mode, and the gear of the first gear part protrudes inside the gear of the second gear part It has a technical feature that it operates in non-freewheel mode because it overlaps with

In addition, the freewheel adjustable wheel according to the present invention rotates by receiving power from the pedal unit, and a rotating gear unit provided with a gear along the outer periphery, a case unit rotatably supporting the rotating gear unit, and rotatably installed in the rotating gear unit It includes a first gear unit to be used, a second gear unit positioned between the first gear unit and the case unit and fixed to the rotating gear unit, and a roller unit located between the rotating gear unit and the case unit.

In addition, the freewheel adjustable wheel may further include at least one of a stopper, an elastic member, and a bearing part.

And the freewheel adjustable wheel has a freewheel mode in which the teeth of the rotating gear facing the roller unit and the first gear unit and the second gear unit match, and the rotating gear unit facing the roller unit, and the teeth of the first gear unit and the second gear unit. This inconsistent non-freewheel mode can be operated.

In addition, the stopper is located on the outside of the case portion and is fixed to the rotation gear portion.

In addition, one side of the elastic member is in contact with the first gear portion and the other side of the elastic member is in contact with the stopper. And the elastic member is provided with an elastic force.

In addition, the rotating gear unit may include a circular gear located inside the case unit and protruding a plurality of gears along the outer periphery, and a rotating shaft member having one side fixed to the circular gear and the other side projecting to the outside of the case unit.

In addition, the case part is located between the stopper and the second gear part and is installed in a shape surrounding the outer case part and the first gear part and the second gear part which is installed in a shape surrounding one side of the first gear part and the second gear part and the other side of the first gear part and the second gear part. It may include an inner case portion facing the outer case portion.

In addition, the case unit may further include an inner cover formed in a ring shape, coupled to the inner side of the inner case unit, and rotated by receiving power through the roller unit.

In addition, the first gear unit may include a plate-shaped first gear body positioned between the second gear unit and the circular gear of the rotation gear unit and a first protruding gear protruding to the outside of the first gear body.

In addition, the first gear unit further includes a first gear protrusion that protrudes from the first gear body and passes through the second gear unit and then is connected to the case unit.

In addition, the second gear unit may include a plate-shaped second gear body positioned between the first gear body and the outer case unit provided in the case unit and a second protruding gear protruding to the outside of the second gear body.

In addition, the second gear unit may further include a second gear protrusion that protrudes from the second gear body and passes through the first gear body and then is connected to the rotating gear unit.

Also, the first gear body may further include a first guide hole for forming a hole so that the second gear protrusion rotates within a set angle.

In addition, the second gear body may further include a second guide hole for forming a hole so that the first gear protrusion rotates within a set angle.

In addition, the roller part is formed in a cylindrical shape, and may be installed along the circumference of the rotating gear part.

A health bike according to an embodiment of the present invention includes a frame part supporting the saddle and the handle part, a pedal part rotatably installed in the frame part, and a gear along the outer periphery while receiving power from the pedal part to rotate. a rotating gear unit to be used, a case unit rotatably supporting the rotating gear unit, a first gear unit rotatably installed in the rotating gear unit, and a second gear positioned between the first gear unit and the case unit and fixed to the rotating gear unit It may include a roller unit positioned between the unit and the rotating gear unit and the case unit.

In the non-freewheel mode, the first gear part is rotated at a set angle together with the outer case part, so that the teeth of the first gear part protrude inside the teeth of the second gear part.

The freewheel adjustable wheel according to the present invention and a health bike having the same, can selectively use the freewheel function by rotation of the first gear unit, so that it is possible to improve the convenience of use of the exercise equipment.

In addition, according to the present invention, the purchase cost of the exercise equipment can be reduced because it is not necessary to separately purchase the exercise equipment depending on whether the freewheel function is present.

In addition, according to the present invention, the freewheel mode can be controlled by the user's operation without using a separate driving motor, so that electricity costs can be reduced.

In addition to the above-described effects, the specific effects of the present invention will be described together while describing specific details for carrying out the invention below.

1 is a perspective view showing a health bike having a freewheel adjustable wheel according to an embodiment of the present invention.
Figure 2 is a perspective view showing a state in which the freewheel adjustable wheel is separated from the health bike according to an embodiment of the present invention.
3 is a perspective view illustrating a freewheel adjustable wheel according to an embodiment of the present invention.
4 is an exploded perspective view of a freewheel adjustable wheel according to an embodiment of the present invention.
5 is a front view showing the main configuration of a freewheel adjustable wheel according to an embodiment of the present invention.
6 is a side view of a freewheel adjustable wheel according to an embodiment of the present invention.
7 is a side cross-sectional view of a freewheel adjustable wheel according to an embodiment of the present invention.
8 is a side view illustrating a state in which the outer case part is moved toward the stopper according to an embodiment of the present invention.
9 is a side cross-sectional view showing a state in which the outer case part is moved toward the stopper according to an embodiment of the present invention.
10 is a front view illustrating an outer case unit in a freewheel mode according to an embodiment of the present invention.
11 is a front view showing an outer case portion in a non-freewheel mode according to an embodiment of the present invention.
12 is a front view illustrating a freewheel adjustable wheel in a non-freewheel mode according to an embodiment of the present invention.

The above-described objects, features and advantages will be described below in detail with reference to the accompanying drawings, and accordingly, those skilled in the art to which the present invention pertains will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to refer to the same or similar components.

Although the first, second, etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from other components, and unless otherwise stated, the first component may be the second component, of course.

In the following, that an arbitrary component is disposed on the "upper (or lower)" of a component or "top (or below)" of a component means that any component is disposed in contact with the upper surface (or lower surface) of the component. Furthermore, it may mean that other components may be interposed between the component and any component disposed on (or under) the component.

Also, when it is described that a component is “connected”, “coupled” or “connected” to another component, the components may be directly connected or connected to each other, but other components are “interposed” between each component. It is to be understood that “or, each component may be “connected”, “coupled” or “connected” through another component.

Throughout the specification, unless otherwise stated, each element may be singular or plural.

As used herein, the singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as "consisting of" or "comprising" should not be construed as necessarily including all of the various components or various steps described in the specification, some of which components or some steps are It should be construed that it may not include, or may further include additional components or steps.

Throughout the specification, when “A and/or B” is used, it means A, B or A and B, unless specifically stated to the contrary, and when “C to D” is used, it means that there is no specific contrary description. Unless otherwise specified, it means that it is greater than or equal to C and less than or equal to D.

[Health Bike]

1 is a perspective view illustrating a health bicycle 1 having a freewheel adjustable wheel 10 according to an embodiment of the present invention, and FIG. 2 is a freewheel in the health bicycle 1 according to an embodiment of the present invention. It is a perspective view showing a state in which the adjustable wheel 10 is separated.

1 and 2 , the health bike 1 according to an embodiment of the present invention includes a frame 200 , a saddle 210 , a handle 220 , and a pedal 230 and It may include a motor unit and a freewheel adjustable wheel 10 .

The frame part 200 supports the saddle part 210 and the handle part 220 , and can be deformed into various shapes within the technical idea of rotatably supporting the pedal part 230 . The frame unit 200 according to an embodiment may include a first frame 201 supporting the freewheel adjustable wheel 10 and a second frame 202 supporting the saddle unit 210 .

The pedal unit 230 is rotatably installed on the frame unit 200 and may be rotated in a forward or reverse direction by a user. The rotating gear unit 30 provided in the freewheel adjustable wheel 10 rotates by receiving power from the pedal unit 230 through a chain or a belt. Also, the monitor unit 240 that outputs information related to exercise may be supported by the frame unit 200 .

[Freewheel adjustable wheel]

3 is a perspective view illustrating the adjustable freewheel wheel 10 according to an embodiment of the present invention, and FIG. 4 is an exploded perspective view of the adjustable freewheel wheel 10 according to an embodiment of the present invention.

3 and 4, the freewheel adjustable wheel 10 according to an embodiment of the present invention includes a rotating gear unit 30, a case unit 60, a first gear unit 90, and a second It may include at least one of the gear unit 100 , the roller unit 110 , the stopper 120 , the elastic member 130 , and the bearing unit 140 .

In the freewheel adjustable wheel 10 according to the present invention, the user rotates the outer case part 70 connected to the first gear part 90, so that there are two types of power, a freewheel and a non-freewheel. The delivery method can be easily selected.

For example, in the freewheel mode, when the pedal unit 230 rotates in the forward direction, the rotational power transmitted to the rotation gear unit 30 is transmitted to the inner case unit 80 through the roller unit 110 and the inner cover 87 . It is transmitted to rotate the inner case portion (80). And, when the pedal unit 230 rotates in the reverse direction, the rotational power transmitted to the rotation gear unit 30 moves only the roller unit 110 , and the power transmitted from the roller unit 110 to the inner cover 87 is is blocked

[Rotation gear part]

The rotary gear unit 30 rotates by receiving power from the pedal unit 230 , and various modifications can be made within the technical idea in which a gear is provided along the outer periphery. The rotation gear unit 30 according to an embodiment of the present invention may include a rotation shaft member 32 , a circular gear 40 , a guide pin 50 , and a guide ring 55 .

The rotating shaft member 32 has a rod shape, and rotates by receiving power from the pedal unit 230 . One side of the rotating shaft member 32 is fixed to the circular gear 40 , and the other side of the rotating shaft member 32 protrudes to the outside of the case unit 60 .

A body mounting groove 34 for mounting the stopper 120 is formed in the body of the rotating shaft member 32 . The body mounting groove portion 34 is installed on the rotating shaft member 32 protruding to the outside of the case portion 60 , and forms a groove along the outer periphery of the rotation shaft member 32 . Therefore, the stopper 120 is mounted in a state inserted into the body mounting groove (34).

The circular gear 40 is located inside the case part 60, and a plurality of gears protrude along the outer periphery. The rotation shaft member 32 is connected to the rotation center of the circular gear 40 . The circular gear 40 according to an embodiment of the present invention includes a disk-shaped circular gear body 42 connected to the rotation shaft member 32 and an outer gear part protruding along the outer periphery of the circular gear body 42 . (44).

The teeth of the outer gear portion 44 have a first gear side surface 46 and a second gear side surface 48 . The first gear side surface 46 extends toward the center of the circular gear body 42 and is installed at a right angle or close to a right angle with the outer peripheral surface of the circular gear body 42 . The first gear side surface 46 according to an embodiment of the present invention is installed at an angle of 80° to 90° with the outer peripheral surface of the circular gear body 42 . And the length of the first gear side 46 is greater than the diameter of the roller portion (110).

The second gear side surface 48 forming the outer gear portion 44 together with the first gear side surface 46 is installed in a shape extending toward the outer peripheral surface of the circular gear body 42 . And since the gap between the second gear side surface 48 and the inner cover 87 is smaller than the diameter of the roller unit 110 , the roller unit 110 is positioned between the second gear side surface 48 and the inner cover 87 . Power transmitted to the roller unit 110 by being pinched is transmitted to the inner cover 87 .

And a ring-shaped guide ring 55 is mounted at the end of the rotating shaft member 32 protruding outward of the case part 60 , and this guide ring 55 is a case shaft 84 by a guide pin 50 . is fixed on Accordingly, the rotation gear unit 30 is prevented from being separated to the outside of the inner case unit 80 .

[case part]

The case unit 60 may be subjected to various modifications within the technical idea of rotatably supporting the rotation gear unit 30 . The case unit 60 according to an embodiment of the present invention may include an outer case unit 70 , an inner case unit 80 , and an inner cover 87 .

The outer case part 70 is positioned between the stopper 120 and the second gear part 100 and is installed in a shape surrounding one side of the first gear part 90 and the second gear part 100 . The outer case part 70 according to an embodiment of the present invention is formed in a disk shape, and extends from the edge of the disk toward the rear side, so that the first gear part 90, the second gear part 100, and the rotation gear part ( 30) and includes an outer case body 71 of a shape surrounding the outside. The outer case body 71 is provided with a case mounting portion 72 having a mounting hole. Since the first gear protrusion 98 of the first gear unit 90 to be described later is inserted into the case mounting unit 72 and fixed, the first gear unit 90 may be moved together with the outer case unit 70 .

The inner case part 80 is installed in a shape surrounding the other side of the first gear part 90 and the second gear part 100 , and various modifications are possible within the technical idea facing the outer case part 70 . The outer case part 70 has an inner space with an open rear, and the inner case has an inner space with an open front. And the outer case portion 70 is installed in a shape surrounding the outside of the inner case portion (80).

The inner case portion 80 according to an embodiment of the present invention includes an inner case body 82 , a case shaft 84 , and a connection groove portion 86 . The inner case body 82 is a circular case with an open front, and a connection groove 86 having a concave shape is provided inside the inner case body 82 .

And a rod-shaped case shaft 84 protruding forward from the center of the inner case body 82 is provided. The case shaft 84 is inserted into the rotation shaft member 32 through a hollow provided inside the rotation shaft member 32 .

The inner cover 87 has a ring shape and is coupled to the inside of the inner case portion 80 . The inner body 88 installed in the ring shape of the inner cover 87 is located inside the inner case body 82 . And since the connecting protrusion 89 protruding to the outside of the inner body 88 is inserted into the connecting groove 86 provided in the inner case portion 80, rotation of the inner cover 87 and the inner case portion 80 is prevented. are synchronized On the other hand, since the inner cover 87 is detachably installed on the inner case portion 80, when replacing the inner cover 87, only the inner cover 87 is separated from the inner case portion 80 and replaced, so maintenance costs are high. can save Since the inner cover 87 rotates by receiving power through the roller unit 110 , a separate coating for increasing frictional force may be applied inside the inner cover 87 .

[1st gear unit]

The first gear unit 90 may be variously modified within the technical idea of being rotatably installed in the rotation gear unit 30 . The rotation gear unit 30 according to an embodiment of the present invention includes a first gear body 92 , a first protruding gear 96 , and a first gear protrusion 98 .

The first gear body 92 is positioned between the second gear part 100 and the circular gear 40 of the rotation gear part 30, and has a plate shape. In addition, the first protruding gear 96 may protrude to the outside of the first gear body 92 , and may protrude to the outside of the circular gear body 42 by a rotating operation.

And the first gear protrusion 98 protrudes forward from the first gear body 92 . The first gear protrusion 98 protrudes from the first gear body 92 , passes through the second gear unit 100 , and is then fixed to the case mounting unit 72 provided in the case unit 60 .

Meanwhile, the first gear body 92 is provided with a first guide hole 94 for forming a hole to rotate within a set angle along the second gear protrusion 107 provided on the second gear part 100 . The first guide hole 94 forms a hole along an arc shape.

[Second gear unit]

The second gear unit 100 is positioned between the first gear unit 90 and the case unit 60 , and various modifications are possible within the technical idea fixed to the rotation gear unit 30 . The second gear unit 100 according to an embodiment of the present invention includes a second gear body 102 , a second protruding gear 104 , and a second gear protrusion 107 .

The second gear body 102 has a plate shape positioned between the first gear body 92 and the outer case part 70 provided in the case part 60 . A hollow is provided in the center of the second gear body 102 to position the rotating shaft member 32 and the elastic member 130 .

Meanwhile, the second gear body 102 is provided with a second guide hole 103 that forms a hole so that the first gear protrusion 98 provided on the first gear unit 90 rotates within a set angle. The second guide hole 103 forms a hole along an arc shape.

The second protruding gear 104 protrudes to the outside of the second gear body 102 , and has a first gear surface 105 and a second gear surface 106 .

The teeth of the second protruding gear 104 have a first gear surface 105 and a second gear surface 106 . The first gear surface 105 extends toward the center of the second gear body 102 , and is installed at a right angle or close to a right angle with the outer circumferential surface of the second gear body 102 . The first gear surface 105 according to an embodiment of the present invention is installed at an angle of 80° to 90° with the outer peripheral surface of the second gear body 102 . And the length of the first gear surface 105 is greater than the diameter of the roller portion (110).

The second gear surface 106 forming the second protruding gear 104 together with the first gear surface 105 is installed to extend toward the outer peripheral surface of the second gear body 102 . And since the gap between the second gear surface 106 and the inner cover 87 is smaller than the diameter of the roller part 110 , the roller part 110 is positioned between the second gear surface 106 and the inner cover 87 . Power transmitted to the roller unit 110 by being pinched is transmitted to the inner cover 87 . The second protruding gear 104 and the outer gear portion 44 may have the same tooth shape.

The second gear protrusion 107 protrudes from the second gear body 102 , passes through the first gear body 92 , and is then connected to the rotation gear unit 30 . The second gear protrusion 107 is fixed to the circular gear body 42 after passing through the first guide hole 94 provided in the first gear unit 90 . In addition, the length of the second gear protrusion 107 is set in consideration of the operation of the first gear unit 90 . The length of the second gear protrusion 107 according to an embodiment of the present invention is a length obtained by adding the working distance of the first gear unit 90 to the thickness of the first gear unit 90 .

[Roller part]

The roller part 110 is positioned between the rotation gear part 30 and the case part 60 . In addition, the roller unit 110 is formed in a cylindrical shape, and may be installed in plurality along the circumference of the rotation gear unit 30 . The roller part 110 is positioned inside the inner cover 87 and positioned outside the second gear body 102 . The roller unit 110 is positioned between the plurality of second protruding gears 104 and the adjacent second protruding gear 104, and is moved along the rotational direction of the rotating gear unit 30 to the inner cover 87. It transmits power to or does not transmit power.

[stopper]

The stopper 120 is a ring-shaped plate and is fixed to the rotation gear unit 30 located outside the case unit 60 . Accordingly, the outer case portion 70 moving in a direction away from the inner case portion 80 along the rotation shaft member 32 is caught by the stopper 120 and thus movement is restricted. The stopper 120 is inserted into the body mounting groove portion 34 provided in the rotation shaft member 32 to restrict movement.

[Elastic member]

One side of the elastic member 130 is in contact with the first gear unit 90 , and the other side of the elastic member 130 is in contact with the stopper 120 . In addition, the elastic member 130 may be a coil spring having an elastic force. When the first gear part 90 is moved together with the outer case part 70 to change to the freewheel mode and the non-freewheel mode, and then moves back to the original position, the first gear part 90 by the elastic force of the elastic member 130. can be moved

The elastic member 130 is located inside the hollow provided in the center of the outer case part 70 and the hollow provided in the center of the second gear part 100 . And one end of the elastic member 130 is in contact with the stopper 120 and the other end is in contact with the first gear body 92 .

[Bearing part]

The bearing unit 140 is installed between the case shaft 84 and the rotating shaft member 32, and reduces friction generated when the rotating shaft member 32 rotates between the case shaft 84 and the rotating shaft member 32. It can improve durability and reduce operating noise. The bearing unit 140 according to an embodiment of the present invention includes a first bearing 141 installed on one side of the case shaft 84 and a second bearing 142 installed on the other side of the case shaft 84 . can do.

[Mode operation]

Hereinafter, the operating state of the freewheel adjustable wheel 10 and the fitness bike 1 having the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 and 4 , the force for turning the pedal may be transmitted to the rotation gear unit 30 through a belt member or the like.

[Non-freewheel mode]

The freewheel adjustable wheel 10 may be operated in a non-freewheel mode or a freewheel mode. In the non-freewheel mode, the teeth of the rotating gear unit 30 facing the roller unit 110 and the first gear unit 90 and the second gear unit 100 do not match. In this non-freewheel mode, the first gear part 90 is rotated at a set angle together with the outer case part 70 , and the teeth of the first gear part 90 protrude inside the teeth of the second gear part 100 . .

Since the gears of the first gear unit 90 overlap in a shape protruding to the inside of the gears of the second gear unit 100 , the non-freewheel mode is operated.

6 is a side view of the adjustable freewheel wheel 10 according to an embodiment of the present invention, FIG. 7 is a side cross-sectional view of the adjustable freewheel wheel 10 according to an embodiment of the present invention, and FIG. 8 is the present invention 9 is a side view showing a state in which the outer case part 70 is moved toward the stopper 120 according to an embodiment of the present invention. is a side cross-sectional view showing a state moved toward It is a front view showing the outer case part 70 in the non-freewheel mode, and FIG. 12 is a front view showing the freewheel adjustable wheel 10 in the non-freewheel mode according to an embodiment of the present invention.

As shown in FIGS. 6 to 12 , when the user grabs the outer case part 70 and pulls it forward to use it in the non-freewheel mode and turns it at a set angle, the first gear part 90 together with the outer case part 70 ) is rotated counterclockwise. The first gear protrusion 98 provided in the first gear unit 90 moves along the second guide hole 103 provided in the second gear unit 100 . The first gear protrusion 98 moves from the end of one side (the right side of FIG. 12 ) to the end of the other side (the left side of FIG. 12 ) of the second guide hole 103 .

When the user rotates the pedal counterclockwise, the rotation gear unit 30 receiving power from the pedal also rotates counterclockwise. And since the first gear part 90 is rotated counterclockwise by the set angle together with the outer case part 70, the first gear protrusion 98 of the first gear part 90 moves to the second gear part 100. protrudes outward of

Accordingly, when viewed with respect to the roller unit 110 , the distance between the first gear protrusion 98 and the inner cover 87 on one side of the roller unit 110 is gradually narrowed. Therefore, when the rotation gear unit 30 rotates in the counterclockwise direction (hereinafter, based on FIG. 12 ), the roller unit 110 is sandwiched between the first gear protrusion 98 and the inner cover 87 , so the rotation gear unit 30 ) is transmitted to the inner cover 87 through the roller unit 110 . Accordingly, the inner case portion 80 connected to the inner cover 87 rotates counterclockwise.

Therefore, as shown in Figure 1, the freewheel adjustable wheel 10 installed in the frame portion 200 of the health bike (1) rotates counterclockwise.

On the other hand, when the user rotates the pedal in the clockwise direction, the rotation gear unit 30 receiving power from the pedal also rotates in the clockwise direction. On the other side of the roller part 110 , the gap between the second gear protrusion 107 and the inner cover 87 is gradually narrowed. Therefore, when the rotation gear unit 30 rotates in the clockwise direction (hereinafter, based on FIG. 12 ), the roller unit 110 is sandwiched between the second gear protrusion 107 and the inner cover 87, so the rotation gear unit 30 The power to rotate is transmitted to the inner cover 87 through the roller unit 110 . Accordingly, the inner case portion 80 connected to the inner cover 87 rotates clockwise.

Therefore, as shown in Figure 1, the freewheel adjustable wheel 10 installed in the frame portion 200 of the health bike (1) rotates clockwise.

[Freewheel Mode]

The freewheel adjustable wheel 10 and the health bike 1 having the same according to the present invention, the freewheel by an operation in which the gear of the first gear unit 90 overlaps or does not overlap the gear of the second gear unit 100 . You can control the action. In the freewheel mode, the gear of the first gear unit 90 rotating at a set angle together with the outer case unit 70 may overlap the gear of the second gear unit 100 .

5 is a front view showing the main configuration of the freewheel adjustable wheel 10 according to an embodiment of the present invention.

As shown in FIG. 5 , in the freewheel mode, the teeth of the rotation gear unit 30 facing the roller unit 110 , the first gear unit 90 , and the second gear unit 100 coincide with each other, so the first gear unit A part of the 90 does not protrude to the outside of the second gear part 100 .

5 to 10, when the user grabs the outer case part 70 and pulls it forward to use it in the freewheel mode and turns it at a set angle, the first gear part 90 together with the outer case part 70 is rotated clockwise. The first gear protrusion 98 provided in the first gear unit 90 moves along the second guide hole 103 provided in the second gear unit 100 . The first gear protrusion 98 moves from the other end (left side in FIG. 5) to one side (right side in FIG. 5) end of the second guide hole 103.

When the user rotates the pedal counterclockwise, the rotation gear unit 30 receiving power from the pedal also rotates counterclockwise. At this time, the first gear protrusion 98 of the first gear unit 90 does not protrude to the inside of the second gear protrusion 107 of the second gear unit 100 .

Therefore, when viewed based on the roller unit 110 , a space equal to or larger than the diameter of the roller unit 110 is formed on one side of the roller unit 110 . Therefore, since the roller part 110 rotates in contact with the first gear surface 105 of the second protruding gear 104 part, the power to rotate the rotation gear part 30 is transmitted through the roller part 110 to the inner cover 87. cannot be transmitted to

Therefore, as shown in Figure 1, the freewheel adjustable wheel 10 installed in the frame portion 200 of the health bike (1) does not rotate.

On the other hand, when the user rotates the pedal in the clockwise direction, the rotation gear unit 30 receiving power from the pedal also rotates in the clockwise direction. On the other side of the roller part 110 , the gap between the second gear protrusion 107 and the inner cover 87 is gradually narrowed. Therefore, when the rotary gear part 30 rotates in a clockwise direction (hereinafter, based on FIG. 12 ), the roller part 110 is sandwiched between the second gear surface 106 of the second gear protrusion 107 and the inner cover 87 . Accordingly, the power for rotating the rotary gear unit 30 is transmitted to the inner cover 87 through the roller unit 110 . Accordingly, the inner case portion 80 connected to the inner cover 87 rotates clockwise.

Therefore, as shown in Figure 1, the freewheel adjustable wheel 10 installed in the frame portion 200 of the health bike (1) rotates clockwise.

As described above, according to the present invention, since the freewheel function can be selectively used by the rotational operation of the first gear unit 90, the convenience of use of the exercise equipment can be improved. In addition, it is possible to reduce the purchase cost of the exercise equipment because it is not necessary to separately purchase the exercise equipment depending on the freewheel function. In addition, since the first gear unit 90 is operated by the user's manipulation without using a separate driving motor, electricity costs can be reduced.

As described above, the present invention has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings disclosed in the present specification. It is obvious that variations can be made. In addition, although the effects according to the configuration of the present invention are not explicitly described and described while describing the embodiments of the present invention, it is natural that the effects predictable by the configuration should also be recognized.

1: fitness bike
10: Freewheel adjustable wheel
30: rotation gear unit
32: rotation shaft member 34: body mounting groove portion
40: circular gear 42: circular gear body 44: outer gear part 46: first gear side 48: second gear side
50: guide pin 55: guide ring
60: case part
70: outer case portion 71: outer case body 72: case mounting portion
80: inner case portion 82: inner case body 84: case shaft 86: connection groove portion
87: inner cover 88: inner body 89: connecting projection
90: first gear unit 92: first gear body 94: first guide hole 96: first protruding gear 98: first gear protrusion
100: second gear unit 102: second gear body 103: second guide hole 104: second protruding gear 105: first gear surface 106: second gear surface 107: second gear projection
110: roller unit 120: stopper 130: elastic member
140: bearing portion 141: first bearing 142: second bearing
200: frame portion 201: first frame 202: second frame
210: saddle 220: handle 230: pedal 240: monitor unit

Claims (19)

a rotating gear unit which rotates by receiving power from the pedal unit and provided with a gear along the outer periphery;
a case part for rotatably supporting the rotary gear part;
a first gear unit rotatably installed in the rotating gear unit;
a second gear part positioned between the first gear part and the case part and fixed to the rotation gear part; and
and a roller part positioned between the rotating gear part and the case part.
a freewheel mode in which the teeth of the rotation gear unit facing the roller unit and the first gear unit and the second gear unit coincide with each other;
A freewheel adjustable wheel operated in a non-freewheel mode in which the teeth of the rotary gear part facing the roller part and the first gear part and the second gear part do not match.
According to claim 1,
The freewheel adjustable wheel further comprising; a stopper positioned outside the case part and fixed to the rotation gear part.
3. The method of claim 2,
The freewheel adjustable wheel further comprising: an elastic member having one side in contact with the first gear unit and the other side in contact with the stopper, and having an elastic force.
3. The method of claim 2,
The rotating gear unit may include a circular gear positioned inside the case unit and protruding from a plurality of gears along the outer periphery;
A freewheel-adjustable wheel comprising a; one side is fixed to the circular gear and the other side is a rotating shaft member protruding to the outside of the case part.
3. The method of claim 2,
The case part may include an outer case part positioned between the stopper and the second gear part and installed in a shape surrounding one side of the first gear part and the second gear part; and
The freewheel-adjustable wheel including a; installed in a shape surrounding the other side of the first gear part and the second gear part, and an inner case part facing the outer case part.
6. The method of claim 5,
The case part is made of a ring shape, is coupled to the inner side of the inner case part, the inner cover is rotated by receiving power through the roller part; Freewheel adjustable wheel further comprising a.
4. The method of claim 3,
The first gear unit may include: a plate-shaped first gear body positioned between the second gear unit and the circular gear of the rotation gear unit; and
A freewheel adjustable wheel including a; a first protruding gear protruding to the outside of the first gear body.
8. The method of claim 7,
The first gear part, the first gear protrusion protruding from the first gear body, passing through the second gear part, and then connected to the case part; Freewheel adjustable wheel further comprising a.
9. The method of claim 8,
The second gear unit may include: a plate-shaped second gear body positioned between the first gear body and an outer case unit provided in the case unit; and
A freewheel adjustable wheel including a; a second protruding gear protruding to the outside of the second gear body.
10. The method of claim 9,
The second gear part, the second gear protrusion protruding from the second gear body, passing through the first gear body, and then connected to the rotation gear part; Freewheel adjustable wheel further comprising a.
11. The method of claim 10,
The first gear body may further include a first guide hole for forming a hole so that the second gear protrusion rotates within a set angle.
10. The method of claim 9,
The second gear body includes a second guide hole for forming a hole so that the first gear protrusion rotates within a set angle.
According to claim 1,
The roller part is made in a cylindrical shape, and the freewheel adjustable wheel is installed along the circumference of the rotating gear part.
a frame part for supporting the saddle part and the handle part;
a pedal unit rotatably installed in the frame unit;
a rotating gear unit which rotates by receiving power from the pedal unit and has a gear along the outer circumference;
a case part for rotatably supporting the rotary gear part;
a first gear unit rotatably installed in the rotating gear unit;
a second gear part positioned between the first gear part and the case part and fixed to the rotation gear part; and
and a roller part positioned between the rotating gear part and the case part.
a freewheel mode in which the teeth of the rotation gear unit facing the roller unit and the first gear unit and the second gear unit coincide with each other;
A health bike operated in a non-freewheel mode in which the teeth of the rotating gear part facing the roller part and the first gear part and the second gear part do not match.
15. The method of claim 14,
The health bike further comprising; a stopper positioned on the outside of the case portion and fixed to the rotation gear portion.
16. The method of claim 15,
One side is in contact with the first gear unit and the other side is in contact with the stopper, and an elastic member having an elastic force.
15. The method of claim 14,
The rotating gear unit may include a circular gear positioned inside the case unit and protruding from a plurality of gears along the outer periphery;
One side is fixed to the circular gear and the other side is a rotating shaft member protruding to the outside of the case portion; fitness bike comprising a.
16. The method of claim 15,
The case part may include an outer case part positioned between the stopper and the second gear part and installed in a shape surrounding one side of the first gear part and the second gear part; and
The first gear part and the second gear part are installed in a shape surrounding the other side, the inner case part facing the outer case part; fitness bike comprising a.
20. The method of claim 19,
The non-freewheel mode is a health bike in which the first gear part is rotated at a set angle together with the outer case part, and the teeth of the first gear part protrude inside the teeth of the second gear part.

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