KR20110008687A

KR20110008687A - Combination bicycle

Info

Publication number: KR20110008687A
Application number: KR1020090066165A
Authority: KR
Inventors: 김용겸
Original assignee: 김용겸
Priority date: 2009-07-21
Filing date: 2009-07-21
Publication date: 2011-01-27

Abstract

The present invention relates to a combined bicycle, the front wheel and the rear wheel is rotatably coupled respectively; A pedal rotatably coupled to a rotating shaft of the front wheel to generate propulsion force on the front wheel; A steering part coupled to the front part of the frame so as to be movable back and forth and generating a propulsion force on the rear wheel and adjusting a steering direction of the front wheel; It is characterized in that it comprises a seat portion coupled to the rear portion of the frame to move back and forth to generate a driving force on the rear wheel.

Accordingly, the driving method can be selected and used according to the user's selection.

Description

Compound Bike {COMBINATION BICYCLE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite bicycle, and more particularly, to a composite bicycle in which propulsion force can be generated by a pedal, a lever, and a seat.

Bicycle is a means of movement that can be moved by rotating the pedal to obtain a driving force. Recently, the use of bicycles for the purpose of exercise and leisure activities rather than the purpose of transportation is increasing.

In particular, as disclosed in Korean Patent Application No. 2001-0009043 and Korean Patent Application No. 2005-0041443 for the purpose of exercise, a bicycle that generates a driving force by pulling a handle like a paddle is also being developed. However, since the disclosed bicycle can obtain propulsion only by pulling the handle or moving the chair back and forth, such as adjustment, the user needs to carry the bicycle directly in order to run out of fitness or move the bicycle to another position. There was a ham.

In addition, there are also problems that it is cumbersome to carry and store because the entire wheel is three large.

In addition, the disclosed bicycle caused strain on the user's fitness because the handle and the chair move at the same time to generate a driving force.

In addition, the conventional rowing bicycle has no means for varying the speed during movement. Therefore, when starting from a stationary state and entering an uphill road, the user may experience inconvenience because the speed cannot be changed, and there is a case where the handle lever does not rotate due to lack of gear neutrality when carrying and storing.

An object of the present invention is to provide a combined bicycle that can serve as a rowing exercise function and a general bicycle to solve the above problems. In other words, the handle, the chair, and the pedal drive is implemented separately, the purpose is to provide a composite bicycle that the user can select and use the driving method.

In addition, there is another object to provide a composite bicycle that can be freely rotated and moved even when the handle portion is not used by the user so that the user can freely move the bicycle by leading the handle without sitting on a chair.

In addition, since only two wheels are used, it is another object to minimize the overall volume and to facilitate the user's carrying and storage.

In addition, it is another object of the present invention to provide a combined bicycle that can be used safely by a user by adding a speed change unit capable of varying speed in a lever driving method and a seat driving method.

One aspect of the present invention for achieving the above technical problem relates to a combined bicycle. The composite bicycle of the present invention includes a frame in which the front wheel and the rear wheel are rotatably coupled to each other; A pedal rotatably coupled to a rotating shaft of the front wheel to generate propulsion force on the front wheel; A steering part coupled to the front part of the frame so as to be movable back and forth and generating a propulsion force on the rear wheel and adjusting a steering direction of the front wheel; It is characterized in that it comprises a seat portion coupled to the rear portion of the frame to move back and forth to generate a driving force on the rear wheel.

According to one embodiment, the seat portion is moved back and forth by a plurality of link modules rotatably provided on the drive shaft coupled to the frame in the horizontal direction.

According to one embodiment, the plurality of link modules, one end is coupled to the drive shaft and the other end is coupled to the main sheet support link portion coupled to the rear portion of the seat; An auxiliary sheet support link portion having one end coupled to the drive shaft and the other end coupled to the front portion of the seat; And a linkage link coupled to the main sheet support link portion and the auxiliary sheet support link portion to transfer the movement of the main sheet support link portion to the auxiliary sheet support link portion.

According to an embodiment of the present invention, the frame and the lever unit may further include a transmission gear that may vary in speed when propulsion occurs in the rear wheel by the lever unit and the seat unit.

The combined bicycle according to the preferred embodiment of the present invention can obtain a driving force by various driving methods such as driving by a pedal, driving by a lever part, driving by a seat part, and driving by a combined movement of a lever part and a seat part. have. Therefore, it is possible to widen the selection according to the user's exercise conditions and physical condition.

In addition, since the steering lever and the lever coupling portion of the lever unit is coupled by the universal joint, the steering width is wide and the user can move as much as possible by holding the handle part without riding the bicycle.

And, since the seat portion is moved back and forth by the link module by a plurality of link combinations without being driven by a separate mechanical mechanism, the entire configuration can be simplified and the user's body can be prevented from being damaged by the mechanical configuration. In addition, since mechanical driving is excluded, noise and vibration can be reduced.

In addition, the speed can be adjusted through the shift lever even when the lever and the seat are driven, so that the vehicle can safely and conveniently run on an uphill road.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiment of the present invention may be modified in various forms, the scope of the invention should not be construed as limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those skilled in the art. Therefore, the shape of the elements in the drawings and the like may be exaggerated to emphasize a more clear description. It should be noted that the same members in each drawing are sometimes shown with the same reference numerals. Detailed descriptions of well-known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention are omitted.

1 is a perspective view showing the external configuration of a composite bicycle 10 according to a preferred embodiment of the present invention, Figure 2 is a side view showing the internal configuration of the composite bicycle 10.

As shown, the composite bicycle 10 according to the preferred embodiment of the present invention constitutes an overall shape and a frame part 100 for rotatably supporting the front wheel 210 and the rear wheel 510 and the frame part 100. The front wheel part 200 is rotatably provided in the front portion of the frame portion 100, and the front part of the frame portion 100 is provided with a steering part 300 for adjusting the steering direction of the front wheel part 200 and rotated back and forth to generate a propulsion force And, the seat 400 seated by the user, the rear wheel portion 500 that is rotatably coupled to the rear portion of the frame portion 100, the pedal 613, the steering portion 300 and the seat portion 400 By the drive unit 600 for generating a driving force to the front wheel 210 and the rear wheel 510.

The frame part 100 covers the driving part 600 so that the driving part 600 is not exposed to the outside and supports the respective components, and a footrest part provided at the front of the frame panel 110 to support the user's foot ( 120).

As shown in FIGS. 1 and 2, the frame panel 110 covers the rotation rod support link unit 350 and the sheet support link units 420 and 430 so as not to be exposed to the outside, and supports each component to be stably driven. do. The frame panel 110 is provided with a pair at left and right sides, and the first and second driving shafts 671 and 673 are rotatably coupled to the frame panel 110, respectively. To this end, the receiving surface for accommodating them is formed in the plate surface of the frame panel 110. Here, the frame panel 110 according to a preferred embodiment of the present invention is implemented to expose some components of the sheet support link portions 420 and 430 to the outside as shown, which is intended to more clearly show the configuration of the present invention. It may further include a separate cover member (not shown) that can conceal the outside of the frame panel 110. In addition, the shape of the frame panel 110 may be diversified and the image or text may be printed on the plate surface for the beauty of the aesthetics.

The front wheel part 200 supports the front wheel 210 to be rotatable with respect to the frame panel 110. The front wheel part 200 generates a direct driving force in the front wheel driving method when driven by the pedal 613, and rear wheel 510 in the rear wheel driving method when driven by the forward and backward movement of the vertical pivoting rod 310 or the seat 410. The front wheel 210 that is rotated by the following), the front wheel support frame 220 for supporting the front wheel 210 to the frame panel 110, and the steering of the steering unit 300 to transmit the front wheel 210 It includes a steering transmission shaft 230.

The front wheel 210 may be used a general wheel. A pedal 613 to be described later is coupled to an extension line of the rotation shaft of the front wheel 210. When the user rotates the pedal 613, the front wheel 210 is rotated directly by the pedal 613 to generate a driving force.

The front wheel support frame 220 couples the front wheel 210 and the frame panel 110 to each other. The shape of the front wheel support frame 220 may be provided to correspond to the arrangement, size and shape of the front wheel 210 and the frame panel 110. The steering transmission shaft 230 couples the steering transmission rod 330 and the front wheel support frame 220 to transfer the steering direction according to the rotation of the vertical rotation rod 310 to the front wheel 210.

The steering unit 300 is rotatably coupled to the frame panel 110 and receives a steering direction from the user. The steering part 300 includes a vertical pivot rod 310, a pivot shaft 320 of the vertical pivot rod 310, and a vertical pivot rod provided to be rotated back and forth with respect to the frame panel 110 as shown in FIG. 2. Steering transmission rod 330 for transmitting the steering direction of the 310 to the front wheel 210, and the handle portion 340 is coupled to the vertical pivoting rod 310 in the horizontal direction and the user changes the driving direction, and vertical rotation The copper rod 310 includes a rotation rod support lever 333 for supporting the vertical rotation rod 310 to be rotatable in the front-rear direction.

The vertical pivot rod 310 is vertically coupled to the frame panel 110. The lower end of the vertical pivot rod 310 is rotatably coupled back and forth with respect to the steering transmission rod 330 about the pivot shaft 320. Here, the rotation shaft 320 is coupled to be concentric with the horizontal axis of the universal joint 321. Thereby, the vertical pivoting rod 310 can move back and forth and left and right so that the user can freely adjust the steering.

On the other hand, one side of the rotating shaft 320 is provided with a lever locking ring (not shown) that can select the movement state of the vertical rotating rod (310). Lever locking ring (not shown) is provided in the coupling area of the pivot shaft 320 and the steering transmission rod 330 whether the vertical pivot rod 310 is maintained in a fixed state or moved in a rotational state depending on whether the user rotates You can choose.

The steering rod 330 is coupled to the lower end of the vertical pivoting rod 310 and transmits the steering direction input by the user by the handle 340 to the steering transmission shaft 230 so that the front wheel 210 moves in the steering direction. Be sure to

The pivot rod support lever 333 accommodates the vertical pivot rod 310 therein and is coupled to the pivot rod support link portion 350 to support the vertical pivot rod 310 to be stably moved back and forth.

The handle portion 340 is coupled in the horizontal direction of the vertical rotation rod 310 is provided so that the user can hold by hand. The handle part 340 is provided with a brake lever 345 and a shift lever 341. The brake lever 345 may apply braking to the driving through the brake line 347. The shift lever 341 is connected to the shift control lever 663 to be described later through the shift transmission line 343 and may change the position of the shift control lever 663 depending on whether the user pressurizes it. As a result, when the driving force is obtained by the steering unit 300 or the seat unit 400, the speed may be varied as desired by the user. The shift transmission line 343 connects the shift lever 341 and the shift control lever 663 to transmit the shift through the shift lever 341 to the shift controller 660.

The rotating rod support link unit 350 supports the vertical rotating rod 310 with respect to the frame panel 110 so that a driving force is transmitted. Rotating rod support link unit 350 is coupled to the lever drive shaft coupling link 351 on the first drive shaft 671, one end is coupled to the lever drive shaft coupling link 351, the other end is the rotation rod support lever 333 Rotating rod coupling link 353 is coupled to one side of the. The lever drive shaft coupling link 351 and the rotation rod coupling link 353 are rotatably coupled by mutual coupling shafts.

4 and 5 are exemplary views illustrating a rotation operation of the vertical rotating rod 310 of the steering unit 300. As shown, when the rotating rod support link unit 350 is rotated by the vertical rotating rod 310, the rotating rod coupling link 353 is pushed and moved in the rotating direction of the vertical rotating rod 310, and the vertical rotating rod 310 is formed. The lever driving shaft coupling link 351 rotates on the first driving shaft 671 in the rotation direction of the vertical rotation rod 310 in conjunction with the movement of the). Here, the clutch bearing 351a is provided in the engaging region of the first driving shaft 671 of the lever driving shaft coupling link 351. The clutch bearing 351a allows power to be transmitted only in one direction when the lever drive shaft coupling link 351 is rotated by the pressure of the vertical pivoting rod 310. That is, the vertical pivoting rod 310 transmits power when rotated backwards and does not transmit power when rotated forward.

Here, the rotation rod support link unit 350 according to a preferred embodiment of the present invention, but the two links are mutually combined to support the vertical rotation rod 310, but may be implemented by a combination of three or more links in some cases It may be.

The seat 400 is held in a fixed state so that the user can be seated stably while driving by the pedal, and moves back and forth during driving by the movement of the seat 400 to generate a driving force. As shown in FIG. 2, the seat unit 400 includes a seat 410 on which the user is seated, and a main sheet support link unit 420 and an auxiliary sheet for movably supporting the seat 410 to the frame unit 100. The support link unit 430, and the interlock link 440 for connecting the main sheet support link unit 420 and the auxiliary sheet link unit 430 to operate in conjunction with each other is provided.

The main sheet support linkage 420 includes a drive shaft coupling link 421 coupled to the first drive shaft 671, a seat coupling link 423 provided between the drive shaft coupling link 421 and the seat 410, and a frame. It includes a frame coupling link 425 provided between the portion 100 and the seat 410. The drive shaft coupling link 421, the sheet coupling link 423, and the frame coupling link 425 are provided to allow the seat 410 to linearly move in consideration of the rotation radius and the trajectory of the three links. That is, the length of the drive shaft coupling link 421, the seat coupling link 423 and the frame coupling link 425, the coupling angle and the coupling position thereof are provided to allow the seat 410 to reciprocate in a straight line.

Here, the seat locking ring 428 is provided at the frame panel 110 and the coupling area of the frame coupling link 425 to fix the position of the frame coupling link 425. The seat locking ring 428 fixes the frame coupling link 425 on the frame panel 110 to determine whether the seat unit 400 is moved. The user locks the seat locking ring 428 when the driving force is to be obtained by the pedal 613, and unlocks the seat locking ring 428 when the driving force is to be obtained by moving the seat 410. The seat locking ring 428 may be used in other forms known in the art.

Meanwhile, the clutch bearing 426 is coupled to the first driving shaft 671 of the driving shaft coupling link 421. The clutch bearing 426 allows power to be transmitted only in one direction when the drive shaft coupling link 421 is rotated by pressure. That is, when the seat 410 moves to the rear to transmit power, and when moving to the front so as not to transmit power.

The auxiliary sheet support link unit 430 moves in association with the main sheet support link unit 420 when the sheet 410 is moved back and forth by the main sheet support link unit 420 and supports the front region of the seat 410. . As shown in FIGS. 2 and 3, the auxiliary sheet support link unit 430 has an auxiliary sheet coupling link 431 coupled to the front region of the sheet 410, and one end thereof is coupled to the auxiliary sheet coupling link 431. The other end includes an auxiliary frame coupling link 433 coupled to the first drive shaft 671.

The interlock link 440 is coupled to the seat coupling link shaft 423a of the main sheet support link unit 420 and the coupling shaft of the auxiliary sheet coupling link 431 and the auxiliary frame coupling link 431, respectively. When the 420 moves by the user's pressure, the auxiliary seat link unit 430 moves in conjunction with this. That is, as shown in FIGS. 4 and 5, when the main sheet support link unit 420 moves so that the seat 410 is moved back and forth by the user's pressure, the interlock link 440 moves and the interlock link 440 moves. As the auxiliary sheet support link unit 430 is folded and rotated by the movement of the support sheet 410 to be stably moved.

On the other hand, the coupling axis of the auxiliary sheet coupling link 431 and the auxiliary frame coupling link 433 is provided with a movement limiting projection 435 extending from the shaft. The movement limiting projection 435 contacts the frame coupling link 425 when the main sheet support link portion 420 is folded and moved for the movement of the seat 410, as shown in FIG. Limit the distance of travel). As a result, the linear movement distance of the seat 410 is also limited.

In the composite bicycle 10 according to the present invention, since the seat unit 400 is moved back and forth by the seat support link units 420 and 430 by the coupling of a plurality of links, the mechanical bicycle such as gears, chains, belts, rollers, etc. The overall structure may be simpler than the conventional configuration implemented. In addition, since the movement mechanism is caused by the rotation of the link, the movement mechanism is simple, and thus the user can safely use it from friction noise and vibration.

The rear wheel part 500 supports the rear wheel 510 to be rotatable with respect to the frame panel 110. The rear wheel part 500 is driven rearwardly by the front wheel 210 when driven by the pedal 613, and the rear wheel 510 which generates driving force when driven by the steering part 300 and the seat part 400, and the rear wheel. The rear wheel support shaft 520 supporting the 510 to be rotated and one end of the rear wheel support shaft 520 are provided by a driving chain 675 when driven by the steering unit 300 and the seat unit 400. The rear wheel chain gear 525 receives a driving force.

The driving unit 600 generates propulsion force on the front wheel 210 and the rear wheel 510 to allow the combined bicycle 10 to move. As shown in FIGS. 1 to 3, the driving unit 600 according to the preferred embodiment of the present invention includes a pedal driving unit 610 and a steering unit 300 which are driven in a front wheel driving manner by the rotation of the pedal 613. And a lever seat driver 620 driven by the rear wheel driving method by the forward and / or forward movement of the seat unit 400.

As shown in FIG. 1, the pedal driving unit 610 has a pedal 613 coupled to both sides and rotates with the pedal 613, and a pedal 613 coupled to both ends of the pedal driving shaft 611. And a front wheel transmission 615 coupled to the pedal drive shaft 611 to adjust the rotational speed of the front wheel 610. When the pedal 613 is rotated by the user, the pedal driving unit 610 rotates the pedal driving shaft 611 and the front wheel shaft together, thereby rotating the front wheel 210. As the front wheel 210 is rotated, the rear wheel 510 is rotated, and the combined bicycle 10 advances by obtaining a driving force.

The lever seat driving unit 620 allows the combined bicycle 10 to obtain propulsion by moving the vertical pivoting rod 310 of the steering unit 300 back and forth or moving the seat unit 400 back and forth. The lever seat driving unit 620 transmits the driving force due to the rotation and movement of the transmission gear unit 630 and the steering unit 300 or the seat unit 400 to adjust the moving speed of the combined bicycle 10 to the rear wheel 510. It includes a transmission unit 670.

As shown in FIGS. 2 and 3, the transmission gear unit 630 includes a high speed gear unit 640 for high speed, a low speed gear unit 650 for low speed, and a low speed gear unit by a shift lever 341. 650 and a high speed gear unit 640 to select a shift control unit 660. The high speed gear unit 650 includes a first gear 641 coupled to the second drive shaft 673, and a second gear 643 coupled to the first drive shaft 671 and engaged with the first gear 641 to rotate. ). Here, the first gear 641 is implemented in a relatively small size compared to the second gear (643). Therefore, when the first drive shaft 671 rotates and the second gear 643 rotates due to the movement of the steering unit 300 and the seat unit 400, the first gear 641 is connected to the second gear 643. Since the meshing gear rotates at a higher speed than the second gear 643, a high speed propulsion force is generated.

The low gear 650 has a third gear 651 coupled to the second drive shaft 673, and a fourth gear 653 coupled to the first drive shaft 671 and rotating in engagement with the third gear 651. ). Here, the third gear 651 is implemented with a relatively larger size than the fourth gear 653. Accordingly, when the fourth gear 653 rotates by the rotation of the first drive shaft 671, the third gear 651 rotates at a slower speed than the fourth gear 653, thereby generating a low-speed propulsion force.

The shift control unit 660 is provided on the shift control lever support shaft 661 for supporting the shift control lever 663 with respect to the frame panel 110 and the shift control lever support shaft 661 as shown in FIG. It is provided on the combined shift control lever 663, the second drive shaft 673, coupled to the shift control lever 663, and by the pressure of the shift control lever 663, the first gear 641 or the third gear ( A coupling spline 665 selectively coupled to 651, and an elastic member 667 to elastically press or return the position of the shift control lever 663. Here, the shift control lever 663 is positioned in a neutral state when driven by the pedal 613. When the user generates the propulsion force by the seat 400 or the steering unit 300, the shift control lever 663 is adjusted to a low or high speed position.

The shift control lever support shaft 661 supports the shift control lever 663 with respect to the frame panel 110. The shift control lever 663 is moved left and right along the shift control lever support shaft 661.

The shift control lever 663 has one end coupled to the shift control lever support shaft 661 and the other end coupled to the coupling spline 665 on the second drive shaft 673. The shift control lever 663 is connected to the shift transmission line 343 and moves left and right on the shift control lever support shaft 661 depending on whether the shift lever 341 is pressurized. A coupling jig 663a formed at the other end of the shift control lever 663 is coupled to the jig coupling groove 665c of the coupling spline 665. The coupling jig 663a of the shift control lever 663 is accommodated in the jig coupling groove 665c formed at the outer circumference of the coupling spline 665, whereby the coupling spline 665 rotates together with the second drive shaft 673. Can be.

The coupling spline 665 is coupled to the end region of the shift control lever 663 and selectively coupled to the low speed gear unit 650, the neutral mode or the high speed gear unit 640 in association with the left and right movement of the coupling spline 665. . Coupling protrusions 665a are formed on both side surfaces of the coupling spline 665. The coupling protrusion 665a is accommodated in the coupling grooves 641a and 651a formed in the first gear 641 and the third gear 651, respectively. The first gear 641 and the third gear 651 may receive a driving force from the second gear 643 or the fourth gear 653 by the coupling of the engaging projection (665a). A second spline 665b is formed at an inner diameter of the coupling spline 665. The second spline 665b meshes with the first spline 673a on the second construction 673. By spline coupling, the coupling spline 665 moves left and right on the second drive shaft 673 in association with the left and right movement of the shift control lever 663 and selectively with the first gear 641 or the third gear 651. Combined.

The elastic member 667 resiliently shifts the shift control lever 663 to its initial position when the shift lever 343 is released from pressure while the position of the shift control lever 663 is moved by the press of the shift lever 341. Return

When the electric drive 670 is driven by the rotation of the steering unit 300 or the forward and backward movement of the seat unit 400, the rear wheel 510 performs the rotational movement of the steering unit 300 or the forward and backward movement of the seat unit 400. To be transmitted to the rear wheel 510 to obtain the driving force. As illustrated in FIG. 2, the transmission unit 670 includes a first drive shaft 671 and a second drive shaft 673, a chain gear 672 coupled to the second drive shaft 673, and a chain gear 672. And a transmission chain 675 which interconnects the rear wheel chain gear 525.

The first drive shaft 671 is coupled to the second gear 643 and the fourth gear 653 on the shaft, the lever drive shaft coupling link 351 and the drive shaft coupling link 421 is coupled. The first drive shaft 671 is rotated in conjunction with the lever drive shaft coupling link 351 is rotated by the forward and backward movement of the vertical pivoting rod 310 or when the drive shaft coupling link 421 is rotated by the movement of the seat 410. do. When the first drive shaft 671 rotates, the second gear 643 and the fourth gear 653 also rotate together.

The chain gear 672 is integrally coupled to the second driving shaft 673, and the first gear 641 and the third gear 651 are coupled to each other. When the first gear shaft 671 is rotated and the second gear 643 or the fourth gear 653 rotates, the first gear 641 and the third gear 651 meshed with the respective gears rotate. As the first gear 641 and the third gear 651 rotate, the second drive shaft 673 also rotates, and the chain gear 672 also rotates integrally. The electric chain 675 rotates by the rotation of the chain gear 672 to transmit the rotational force to the rear wheel gear 525.

The driving force transfer process of the combined bicycle 10 according to the present invention having such a configuration will be described with reference to FIGS. 1 to 7.

First, when the user wants to obtain a driving force by the pedal, as shown in Figure 6 by placing the lever locking ring (not shown) and the seat locking ring 428 in a locked state, the vertical pivot rod 310 and the seat 410 ) To be fixed. When the pedal 613 is rotated, the front wheel 210 is rotated while the pedal driving shaft 611 and the front wheel shaft are coupled to the pedal 613. When the rear wheel 131 rotates by following the rotation of the front wheel 210, the combined bicycle 10 obtains a driving force.

7 is an exemplary view illustrating a posture in which a user is seated in the combined bicycle 10 according to a preferred embodiment of the present invention to obtain driving force by the steering unit 300 or the seat unit 400. At this time, the user rotates the lever locking ring (not shown) and the seat locking ring 428 to release the locked state. As shown, the user seats the foot on the footrest 120 and the hand is positioned on the handle 340. Composite bicycle 10 according to a preferred embodiment of the present invention to obtain a driving force by rotating only the vertical rotation rod 310, or to obtain a driving force by rotating only the seat portion 400, or the vertical rotation rod 310 and the seat portion The driving force can be obtained by rotating and moving the 400 at the same time. In each case, the user may release and use at least one of the lever locking ring (not shown) and the seat locking ring 428.

First, when the user wants to obtain the driving force by the steering unit 300, the user pulls the handle 340 toward the body. At this time, as shown in Figs. 4 and 5, the vertical rotation rod 310 is rotated, the rotation rod support lever 333 is also rotated clockwise by the pressing force, and the position of the rotation rod support ring portion 350 is changed. do. The first drive shaft 671 also rotates in conjunction with the rotation of the lever drive shaft coupling link 351, and thus the second drive shaft 673 and the chain gear 672 rotate. As the chain gear 672 rotates, the electric chain 675 rotates so that the rear wheel chain gear 525 and the rear wheel 510 rotate. As a result, a propulsion force is generated in the rear wheel 510 to move the combined bicycle 10.

Here, when the user does not press the shift lever 341, the coupling spline 665 of the shift control lever 663 is engaged with the third gear 651. When the first drive shaft 671 rotates in this state, the third gear 651 and the fourth gear 653, which are low speed gears, mesh with each other to rotate. Accordingly, the transmission chain 675 coupled to the second driving shaft 673 transmits the rotational force to the rear wheel 510 so that the combined bicycle 10 moves at a low speed.

On the other hand, when the user presses the shift lever 341, the shift control lever 663 moves while the length of the shift transmission line 343 is shortened. The coupling spline 665 moves along the first spline 673a in the movement direction of the shift control lever 663 and is coupled to the first gear 641 which is a high speed gear. Therefore, the combined bicycle 10 moves at a high speed.

This driving process is the same when the seat unit 400 only moves back and forth, or the seat unit 400 and the steering unit 300 is moved together.

As described above, the combined bicycle according to the preferred embodiment of the present invention has various driving methods such as driving by pedal, driving by lever part, driving by seat part and driving by compound movement of lever part and seat part. Propulsion can be obtained. Therefore, it is possible to widen the selection according to the user's exercise conditions and physical condition.

And, since the seat portion is moved back and forth by the link module by a plurality of link combinations without being driven by a separate mechanical mechanism, the entire configuration can be simplified and the user's body can be prevented from being damaged by the mechanical configuration. In addition, since mechanical driving is excluded, friction noise and vibration can be reduced.

In addition, since the speed can be adjusted through the shift lever even when the lever and the seat are driven, the vehicle can be safely and conveniently operated on an uphill road.

The embodiment of the combined bicycle of the present invention described above is merely exemplary, and those skilled in the art will appreciate that various modifications and equivalent other embodiments are possible therefrom. There will be. Therefore, it will be understood that the present invention is not limited to the forms mentioned in the above detailed description. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims. It is also to be understood that the present invention includes all modifications, equivalents, and substitutes within the spirit and scope of the invention as defined by the appended claims.

1 is a perspective view showing the configuration of a composite bicycle of the present invention,

Figure 2 is an exploded perspective view showing an exploded configuration of the composite bicycle of the present invention,

Figure 3 is an exploded perspective view showing an exploded portion of the composite bicycle of the present invention,

4 and 5 are exemplary views showing the operation process of the steering unit and the seat unit of the composite bicycle of the present invention,

6 is an exemplary view showing a state in which the combined bicycle of the present invention is driven by a pedal,

7 is an exemplary view illustrating a state in which the combined bicycle of the present invention is driven by a steering unit or a seat unit.

* Description of the symbols for the main parts of the drawings *

10: combined bicycle 100: frame portion

110: frame panel 120: foot hanger

200: front wheel portion 210: front wheel

220: front wheel support frame 230: steering transmission shaft

300: steering unit 310: vertical rotating rod

320: pivot shaft 321: universal joint

330: steering rod 333: rotation rod support lever

340: handle 341: shift lever

343: Transmission line 345: Brake lever

347: Brake transmission line 350: Rotating rod support link

351: Lever drive shaft coupling link 351a: Clutch bearing

353: rotating rod coupling link 400: seat portion

410: sheet 420: main sheet support link portion

421: drive shaft coupling link 421a: bearing accommodation hole

423: sheet coupling link 423a: sheet coupling link shaft

425: frame coupling link 426: clutch bearing

427: first coupling link coupling shaft 428: seat locking ring

430: auxiliary sheet support link portion 431: auxiliary sheet coupling link

433: auxiliary frame coupling link 435: movement limiting projection

440: interlocking link 441: receiving groove

500: rear wheel 510: rear wheel

520: rear wheel support shaft 525: rear wheel chain gear

600: drive unit 610: pedal drive unit

611: pedal drive shaft 613: pedal

615: front wheel transmission 620: lever seat driving unit

630: transmission gear portion 640: high speed gear portion

641: first gear 641a: coupling groove

643: second gear 650: low gear

651: third gear 651a: coupling groove

653: fourth gear 660: shift control unit

661: shift control lever support shaft 663: shift control lever

663a: coupling jig 665: coupling spline

665a: coupling protrusion 665b: second spline

665c: jig coupling groove 667: elastic member

670: electric drive 671: first drive shaft

672: chain gear 673: second drive shaft

673a: First spline 675: Electric chain

Claims

A frame 100 to which the front wheel 210 and the rear wheel 510 are rotatably coupled, respectively;

A pedal 613 rotatably coupled to a rotation shaft of the front wheel 210 to generate a driving force for the front wheel 210;

A steering part 300 coupled to the front part of the frame 100 so as to be movable back and forth and generating a driving force on the rear wheel 510 and adjusting a steering direction of the front wheel 100;

And a seat portion (400) coupled to the rear portion of the frame (100) so as to be movable back and forth and generating a propulsion force on the rear wheel (510).

The method of claim 1,

The seat portion 400 is moved forward and backward by a plurality of link modules (420,430,440) rotatably provided on the drive shaft (673) coupled to the frame 100 in the horizontal direction.

The method of claim 2,

The plurality of link modules 420, 430, 440,

A main sheet support link part 420 coupled to one end of the driving shaft 673 and the other end coupled to a rear portion of the seat 410;

An auxiliary sheet support link part 430 having one end coupled to the drive shaft 673 and the other end coupled to the front portion of the seat 410;

Interlocking link coupled to the main sheet support link unit 420 and the auxiliary sheet support link unit 430 to transfer the movement of the main sheet support link unit 420 to the auxiliary sheet support link unit 430 ( 440), characterized in that the combined bicycle.

The method of claim 2,

Transmission gear unit that can vary the speed when the propulsion occurs in the rear wheel 510 by the steering unit 300 and the seat portion 400 in the coupling region of the frame 100 and the steering unit 300 630, the combined bicycle characterized in that it is further included.