KR101035838B1

KR101035838B1 - Bicycle

Info

Publication number: KR101035838B1
Application number: KR1020090011139A
Authority: KR
Inventors: 최의정
Original assignee: 최의정
Priority date: 2009-02-11
Filing date: 2009-02-11
Publication date: 2011-05-20
Also published as: WO2010093178A3; KR20100091783A; WO2010093178A2

Abstract

The present invention relates to a bicycle, comprising: a front wheel frame rotatably supporting a front wheel; A head to which the front wheel frame is rotatably coupled; A front frame rotatably lettered to the head; A rear wheel frame rotatably supporting the rear wheels; A connecting bracket coupled to the front frame and the rear wheel frame to access and space each other; A saddle support supporting the saddle and supported by the connecting bracket; A front link rotatably coupled to the saddle support and the head; A rear link rotatably coupled to the saddle support and the rear wheel frame; A sleeve reciprocally coupled to the saddle support corresponding to a bicycle use position for using the bicycle and a bicycle folding position for folding the bicycle; A first arm rotatably coupled to the sleeve and the front link; And a second arm rotatably coupled to the sleeve and the rear link. As a result, the overall length and volume of the bicycle can be reduced, thereby minimizing the transportation and storage space.

Description

Bicycle {BICYCLE}

The present invention relates to a bicycle, and more particularly, to a bicycle that can be folded and the height of the saddle can be adjusted to the user's body shape.

As the obesity population is rapidly increasing for modern people who lack exercise compared to the food consumed by the development of civilization, the importance of health due to adult diseases is a hot topic.

Various diet products are being introduced to reduce body fat due to obesity, which is the cause of adult disease, but it is developed without considering professionalism, and the diet effect is not reviving on expectations.

Various electric vibration belts using electricity are used to reduce belly fat, but vibration of some parts of the body while standing or sitting does not provide a condition where body fat is decomposed. However, the moment you use the belt, you will feel cool and will not reach the conditions where your body fat can be broken down.

Recently, meridian massage using microscopic movements is used to remove or reduce body fat accumulated in belly, thighs, and face, but this effect also temporarily disperses the accumulated fat to other places at the moment of massage by a massage specialist. After a while, it will return to its original state, which also does not match the effect.

It is true that ordinary people as well as experts have a lack of awareness of exercise, so they tend to concentrate on exercise for physical fitness, which is a stumbling block to exercise while doing short time exercise. It also helps with muscle movement, but it is not very helpful in breaking down body fat.

Walking or running exercise is not expected to exercise if you walk or run for a while, if you walk or run for a long time may cause abnormalities in the ankle and knee joints, exercise that requires attention.

On the other hand, there is a prerequisite for the body fat decomposition due to lack of exercise.

First, because the obesity is made at the current body temperature, the body temperature synergistic effect that the body fat can be decomposed through exercise should be induced, and after the body temperature rise, the motion is performed for a sufficient time to decompose the body fat. You need a big but effortless workout.

Second, if aerobic is not supplied to the body, body fat is not decomposed, so aerobic exercise requires a large and speedy movement, and it is a speedy movement to exercise for a sufficient time for body fat to decompose, but it does not take force. Should not.

Third, in order to evenly eliminate the body fat accumulated in the body, not part of the body, the slow motion of body fat must be followed according to the fine motion of the whole body, so that the maximum amount of fine motion should be induced at the time of exercise.

Therefore, bicycles are widely used as an aerobic exercise device for body fat decomposition due to obesity due to lack of exercise, and recently, as the craze of well-being increases, it has been in the spotlight as one of the popular leisure sports.

Exercise through bicycles is frequently used in the form of using bicycles during commute, or using bicycles along roads or pedestrians in adjacent areas of residential spaces before or after work.

On the other hand, the bicycle is invented so that the occupant forwards the driving force generated by pressing the pedal to the rear wheel by the chain, it is basically an exercise equipment provided to ride outdoors.

That is, the bicycle is configured to repeatedly rotate the pedal in the state where the saddle and the pelvis are in close contact with each other to train the user's muscles.

Such a bicycle has a front wheel steered by a handle, a rear wheel that is rotated by the rotational force of the pedal, a main frame that rotatably supports the front wheel and the rear wheel, and a saddle disposed above the main frame.

However, in the conventional bicycle, since the main frame that supports the front wheel and the rear wheel is rotatable, it is difficult to reduce the size of the bicycle, so when transporting the bicycle by car for sports activities, such as the trunk of the car or the rear seat There is a problem that the space occupied by the bicycle in the space is unnecessarily increased or, in some cases, cannot be stored.

In addition, the conventional bicycle has a small height adjustment range of the saddle, in the case of a tall person sitting on the bike bend the waist, there is a problem that the inconvenience of cycling.

The problem to be solved in the problem of the background art, according to the present invention is to provide a bicycle that can reduce the overall length and volume of the bicycle to minimize the transport and storage space.

Another problem to be solved by the problems of the background art, according to the present invention, is to provide a bicycle that can adjust the height of the saddle according to the user's body shape.

Means for solving the above problems, according to the present invention, the front wheel frame for rotatably supporting the front wheel; A head to which the front wheel frame is rotatably coupled; A front frame rotatably lettered to the head; A rear wheel frame rotatably supporting the rear wheels; A connecting bracket coupled to the front frame and the rear wheel frame to access and space each other; A saddle support supporting the saddle and supported by the connecting bracket; A front link rotatably coupled to the saddle support and the head; A rear link rotatably coupled to the saddle support and the rear wheel frame; A sleeve reciprocally coupled to the saddle support in response to a bicycle use position for using the bicycle and a bicycle folding position for folding the bicycle; A first arm rotatably coupled to the sleeve and the front link; And a second arm rotatably coupled to the sleeve and the rear link.

Here, the saddle support, the saddle rod for supporting the saddle; A saddle post to which the saddle rod is telescopically coupled and supported by the connecting bracket; It is preferable to include a rod fixing bolt for fixing the saddle rod to the saddle post.

A plurality of through holes formed in the saddle rod at a predetermined pitch along the longitudinal direction of the saddle rod; A communication hole formed in the sleeve and communicating with the through hole; It is coupled to the communication hole and the through hole corresponding to the bicycle use position, by including a sleeve fixing bolt for fixing the sleeve to the saddle rod, it is possible to adjust the height of the saddle according to the user's body shape.

It is preferable that the scale which displays the position which the said communication hole communicates with the said through hole is provided in the outer periphery of the said saddle rod.

The saddle post has a slit formed along the longitudinal direction of the saddle post, the saddle rod includes a key coupled to the slit, so that the saddle height can be stably adjusted without disturbing the position of the saddle when the saddle height is adjusted. .

The interval between the rod fixing bolt coupled to the saddle post and the sleeve fixing bolt coupled to the sleeve in the bicycle use position is preferably the same pitch between the through holes.

A handle development position interposed between the front wheel frame and the handle, wherein the handle is aligned with the front wheel frame in a straight line with respect to the front wheel frame, a handle via position extended by a predetermined angle from the handle deployment position, and from the handle deployment position By further including a tilting part to which the handle is tiltably coupled to reciprocate between the folded handle folding positions, the tilting angle of the handle can be easily adjusted according to the user's body shape and the transport and storage space can be minimized.

The tilting unit includes a guide pin coupled to the handle; A bracket supported by the front wheel frame to form a guide hole for guiding the movement of the guide pin in response to the movement of the handle deployment position, the handle via position, and the handle folding position; A stopper ring mounted on at least one end of the guide pin so as to be reciprocated and contact and spaced apart from the bracket; It is preferable to include an operation knob coupled to the guide pin so as to reciprocate, locking and unlocking the guide pin to the guide hole by contacting and spaced apart from the stopper ring.

Therefore, according to the above solution, the length and volume can be reduced to facilitate storage and transportation. In addition, the height of the saddle can be adjusted according to the user's body shape. And, the tilt angle of the handle can be easily adjusted according to the user's body shape.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 to 7 show a bicycle according to the invention. As shown in these figures, the bicycle according to the present invention, the front wheel 11, which is steered by the handle 21, the rear wheel 25 rotated by the rotational force of the pedal 45, the front wheel 11 and the rear wheel And a main frame 31 for rotatably supporting the 25 and a saddle support 81 for supporting the saddle 77.

The front wheel shaft 13 is coupled to the center of the front wheel 11, the front wheel shaft 13 is rotatably supported by the front wheel frame (15).

A handle 21 for steering the front wheels 11 is disposed above the front wheel frame 15. The handle 21 is provided with a pair of grippers 23 that can be gripped.

The rear wheel 25 is disposed at intervals with the front wheel 11, the rear wheel shaft 27 is coupled to the center of the rear wheel 25, the rear wheel shaft 27 is the rear wheel frame of the main frame 31 to be described later ( 37 is rotatably supported.

The main frame 31 is configured to rotatably support the head 33 on which the front wheel frame 15 is rotatably coupled, the front frame 35 rotatably lettering on the head 33, and the rear wheel 25. The rear wheel frame 37 and the front frame 35 and the rear wheel frame 37 include a connecting bracket 39 coupled to each other and spaced apart.

The head 33 is located at the top of the front wheel 11, the front wheel frame 15 penetrates. The head 33 has a head bracket 34 to which the front frame 35 and the front link 101, which will be described later, are hinged.

In addition, the connecting bracket 39 is rotatably provided with a rotating shaft 41 which is rotated by the pedal 45.

A pair of pedals 45 for rotating the rotary shaft 41 are coupled to both ends of the rotary shaft 41.

The rotary shaft 41 and the rear wheel shaft 27 are interconnected by a pair of power trains 50a and 50b. The pair of power trains 50a and 50b are arranged to face each other with the rear wheel frame 37 interposed therebetween. Hereinafter, for convenience of description, the power transmission device located on the right side in the forward direction of the bicycle is referred to as the main power transmission device 50a, and the power transmission device located on the left side is called the auxiliary power transmission device 50b.

The main power transmission device 50a includes a main drive sprocket 53a mounted on the rotary shaft 41, a plurality of main driven sprockets 55a mounted on the rear wheel shaft 27, a main drive sprocket 53a, and a plurality of the main drive sprocket 53a. It has a main chain (57a) for interconnecting any one of the main driven sprocket (55a) of the to transmit the rotational force generated in the rotary shaft 41 to the rear wheel shaft (27).

In the inside of the main driven sprocket 55a, the main driven sprocket 55a blocks power transmission to the rear wheel shaft 27 when rotating in the backward direction of the bicycle, thereby turning the main driven sprocket 55a in the wrong direction. One-way ratchet means (not shown) are provided.

In particular, the plurality of main driven sprockets 55a have different diameters so that the rotation speed of the rear wheel 25 can be changed by the operation of the shifting unit to be described later. Here, the diameter of the main drive sprocket 53a is preferably larger than the diameter of each main driven sprocket 55a.

The main chain 57a is parallel to the main drive sprocket 53a and the main driven sprocket 55a so that the main drive sprocket 53a and the main driven sprocket 55a rotate in the same direction.

The auxiliary power transmission device 50b includes an auxiliary drive sprocket 53b attached to the rotary shaft 41, an auxiliary driven sprocket 55b attached to the rear wheel shaft 27, an auxiliary drive sprocket 53b, and an auxiliary driven sprocket. It has an auxiliary chain (57b) that interconnects (55b) and transmits the rotational force generated in the rotary shaft 41 to the rear wheel shaft (27).

The auxiliary drive sprocket 53b and the auxiliary driven sprocket 55b are spaced apart from the main drive sprocket 53a and the main driven sprocket 55a, respectively, and have the same plane at the other ends of the rotary shaft 41 and the rear wheel shaft 27. It is equipped with it. Here, the diameter of the auxiliary drive sprocket 53b is preferably larger than the diameter of the auxiliary driven sprocket 55b.

The auxiliary chain 57b is crosswise hooked to the auxiliary drive sprocket 53b and the auxiliary driven sprocket 55b so that the auxiliary drive sprocket 53b and the auxiliary driven sprocket 55b rotate in different directions.

As a result, when the pedal 45 is rotated to the rear of the bicycle, the rotational force of the rotating shaft 41 is transmitted to the rear wheel shaft 27 via the auxiliary power transmission device 50b, and the rear wheel 25 is driven forward to drive the bicycle. Will move forward.

Here, the auxiliary chain 57b may be parallel to the auxiliary drive sprocket 53b and the auxiliary driven sprocket 55b such that the auxiliary drive sprocket 53b and the auxiliary driven sprocket 55b rotate in the same direction. Accordingly, even if the main sprockets 53a and 55a and the main chain 57a of the main power transmission device 50a are damaged and a failure occurs, the bicycle can be driven by the auxiliary power transmission device 50b.

On the other hand, the one-way clutch 61 is provided between the auxiliary driven sprocket 55b and the rear wheel shaft 27 of the auxiliary power transmission device 50b, and the rotational force of the rear wheel shaft 27 has the rotational force of the auxiliary wheel sprocket 27 in the one-way clutch 61. It plays a role of controlling to not be delivered to (55b).

As shown in FIGS. 4 and 5, the one-way clutch 61 forms a hub 63 mounted on the rear wheel shaft 27 and a plurality of latch grooves 67 on an inner circumference thereof, and the auxiliary driven sprocket 55b of the auxiliary driven sprocket 55b. The latch wheel 65 provided on the inner circumference, a plurality of latch protrusions 69 for locking and releasing the latch grooves 67, and the latch protrusion 69 for the latch protrusions 69 to latch the latch grooves 67. It has a plurality of springs 71 to provide elastic force to the.

Hub 63 is screwed with the rear wheel shaft 27, the inner circumference of the hub (63) is left screwed to prevent loosening with the rear wheel shaft 27 when the bicycle is running is screwed with the rear wheel shaft (27) desirable.

The latch wheel 65 is provided on the inner circumference of the auxiliary driven sprocket 55b concentric with the hub 63 so as to be rotatable along the outer circumference of the hub 63. The latch wheel 65 in this embodiment is formed integrally with the auxiliary driven sprocket 55b.

A plurality of latch grooves 67 are formed on the inner circumference of the latch wheel 65 to latch and release the latch protrusion 69. The plurality of latch grooves 67 are formed at predetermined intervals along the inner circumference of the latch wheel 65 to form a predetermined angle with respect to the inner circumference of the latch wheel 65 in the reverse direction of the bicycle.

The latch protrusion 69 is rotatably coupled to the hub 63, and one end of the latch protrusion 69 is engaged and released by the latch groove 67 of the latch wheel 65 to fix the rear wheel shaft 27. Rotate and idle. Although a pair of latch protrusions 69 are disclosed in this embodiment, the number of latch protrusions 69 is not limited thereto.

The latch protrusion 69 is elastically supported by a spring 71 that provides an elastic force to be caught by the latch groove 67.

The one-way clutch 61 having the configuration of the hub 63, the latch wheel 65, the latch protrusion 69, and the spring 71 is accommodated in the clutch housing 73 (see FIG. 1).

The latch wheel 65 is rotatably supported by the clutch housing 73 between the clutch housing 73 and the latch wheel 65, that is, between an inner side surface of the clutch housing 73 and an outer side surface of the latch wheel 65. A plurality of balls 75 are provided. The plurality of balls 75 are arranged along the circumferential direction of the latch wheel 65.

Accordingly, when the pedal 45 is rotated in the forward direction of the bicycle, as the rotation shaft 41 rotates in the forward direction of the bicycle, the main drive sprocket 53a and the main driven sprocket 55a are in the same direction as the rotation shaft 41. By rotating in the forward direction of the bicycle, the rear wheel shaft 27 is rotated in the forward direction of the bicycle.

On the other hand, as the rotating shaft 41 rotates in the forward direction of the bicycle, the auxiliary drive sprocket 53b rotates in the same forward direction as the rotating shaft 41, but the auxiliary driven sprocket 55b is rotated by the auxiliary chain 57b. This change is made to rotate in the reverse direction of the bicycle opposite to the auxiliary drive sprocket 53b, that is, for convenience of description, as shown in FIG. 5, the auxiliary driven sprocket 55b and the latch wheel 65 are clockwise. By rotating, the latch protrusion 69 is not caught by the latch groove 67 of the latch wheel 65. Thus, the auxiliary driven sprocket 55b and the latch wheel 65 are idling along the outer circumference of the hub 63, so that the rotational force of the auxiliary driven sprocket 55b is not transmitted to the rear wheel shaft 27.

Thus, when the pedal 45 is rotated in the forward direction of the bicycle, the rear wheel 25 is driven by the rotational force transmitted through the main power transmission device 50a, and the bicycle travels in the forward direction, and the auxiliary power transmission device 50b. The rotational force transmitted through) does not affect the driving of the rear wheel 25 at all.

On the contrary, when the pedal 45 is rotated in the reverse direction of the bicycle, as the rotating shaft 41 rotates in the reverse direction of the bicycle, the rear wheel shaft is formed by a known one-way ratchet means provided in the main driven sprocket 55a. 27) power transmission is interrupted, so that the main driven sprocket 55a rotates in vain, so that the rotational force of the main driven sprocket 55a is not transmitted to the rear wheel shaft 27.

On the other hand, as the rotating shaft 41 rotates in the reverse direction of the bicycle, the auxiliary drive sprocket 53b rotates in the same reverse direction as the rotating shaft 41, but the auxiliary driven sprocket 55b is rotated by the auxiliary chain 57b. The direction is changed to rotate in the forward direction of the bicycle opposite to the auxiliary drive sprocket 53b, that is, for convenience of description, as shown in FIG. 4, the auxiliary driven sprocket 55b and the latch wheel 65 are counterclockwise. Direction, the latch projection 69 is held by the latch groove 67 of the latch wheel 65. Accordingly, the latch wheel 65 and the hub 63 rotate together in the same direction, so that the rear wheel shaft 27 coupled with the hub 63 rotates in the forward direction of the bicycle.

Thus, when the pedal 45 is rotated in the reverse direction of the bicycle, the rear wheel 25 is driven by the rotational force transmitted through the auxiliary power transmission device 50b so that the bicycle travels in the forward direction, and the main power transmission device 50a. The rotational force transmitted through) does not affect the driving of the rear wheel 25 at all.

On the other hand, the bicycle according to the present invention is disposed on the upper side of the main frame 31 between the front wheel 11 and the rear wheel 25, the saddle 77 is seated on the user's pelvis, the saddle 77 is a saddle support ( 81).

Saddle support (81) is a saddle rod (83) for supporting the saddle 77, the saddle rod (83) is telescopically coupled and the saddle post 91 is supported on the connecting bracket 39, the saddle rod (83) ) Includes a rod fixing bolt (99) for fixing the saddle post (91).

As shown in FIG. 6, the saddle rod 83 has a predetermined length, and the plurality of through holes 85 have a predetermined pitch in the saddle rod 83 along the longitudinal direction of the saddle rod 83. have. Moreover, the scale 87 for displaying the communication position of the through-hole 85 and the communication hole 113 of the sleeve 111 mentioned later is provided in the outer periphery of the saddle rod 83. As shown in FIG. In addition, a key 89 having a predetermined length is provided on the outer circumference of the free end of the saddle rod 83 facing the saddle post 91, and the key 89 is provided along the longitudinal direction of the saddle rod 83.

The saddle post 91 has a hollow pipe shape, and the saddle rod 83 is telescopically coupled to the inner circumference of the saddle post 91. One end of the saddle post 91 stands and is supported by the connecting bracket 39. Saddle post 91 is formed with a slit 93 cut along the longitudinal direction, the key 89 of the saddle rod 83 is coupled to the slit 93, the position of the saddle 77 It is possible to stably adjust the height of the saddle 77 without disturbing.

The saddle rod 83 is fixed to the saddle post 91 by a rod fixing bolt 99. The rod fixing bolt 99 is penetrated through the fastening hole 97 formed in the saddle post 91 and the through hole 85 of the saddle rod 83. The saddle post 91 further has a post bracket 95 to which the front link 101 and the rear link 103 are rotatably coupled.

One side of the post bracket 95 is interconnected with the head 33 by the front link 101, the front link 101 is hinged to the post bracket 95 and the head 33. The other side of the post bracket 95 is interconnected with the rear wheel frame 37 by a rear link 103, the rear link 103 is a rear wheel 105 and the rear wheel connected to the post bracket 91, It has a second rear link 107 connected to the frame 37. The first rear link 105 is hinged to the post bracket 95, the second rear link 107 is hinged to the rear wheel frame 37, the first rear link 105 and the second rear link 107. ) Is hinged.

On the other hand, the sleeve 111 is coupled to the outer circumference of the saddle rod 83 so as to reciprocate. The sleeve 111 reciprocates along the outer circumference of the saddle rod 83 in response to the bicycle use position for using the bicycle and the bicycle folding position for folding the bicycle.

The sleeve 111 is in close contact with the upper end of the saddle post 91 in the bicycle use position, and the sleeve 111 is spaced apart from the upper end of the saddle post 91 in the bicycle folding position.

In addition, one side of the sleeve 111 is rotatably connected to the front link 101 by the first arm 115, and the other side of the sleeve 111 is the rear link 103 by the second arm 117. It is rotatably connected to. The first arm 115 is hinged to the sleeve 111 and the front link 101 to be rotatable, and the second arm 117 is hinged to the sleeve 111 and the rear link 103 to be rotatable. have. In addition, a communication hole 113 communicating with the through hole 85 of the saddle rod 83 is formed in the sleeve 111. The sleeve fixing bolt 119 is coupled to the communication hole 113 of the sleeve 111 and the through hole 85 of the saddle rod 83, so that the sleeve 111 is fixed to the saddle rod 83.

On the other hand, in the present embodiment, the distance between the rod fixing bolt 99 coupled to the saddle post 91 and the sleeve fixing bolt 119 coupled to the sleeve 111 in the bicycle use position is the angle of the saddle rod 83 It is equal to the pitch between the through holes 85.

In addition, the bicycle according to the present invention has a tilting portion 121 which is interposed between the front wheel frame 15 and the handle 21 so that the handle 21 is tiltably coupled to the front wheel frame 15.

The handle 21 is moved between the handle opening position in a straight line with the front wheel frame 15 by the tilting part 121, a handle via position extended by a predetermined angle from the handle opening position, and a handle folding position folded from the handle opening position. Go back and forth.

As shown in FIG. 7, the tilting part 121 corresponds to a guide pin 123 coupled to the handle 21 and a movement to the handle developing position, the handle passing position, and the handle folding position of the handle 21. The guide hole 147 is formed to guide the movement of the guide pin 123 and has a bracket 141 that the handle 21 is rotatably provided.

The guide pin 123 has a rod shape, and the guide pin 123 is disposed in the transverse direction with respect to the axis of the handle 21. The guide pin 123 is penetrated and coupled to the handle through hole 127 formed through the handle 21, and is coupled to the guide hole 147 so that both ends of the guide pin 123 protrude from the bracket 141.

On both ends of the guide pin 123, stopper rings 129a and 129b contacting and spaced apart from the bracket 141 are mounted to be reciprocated, respectively.

Meanwhile, a screw 125 is formed at one end of the guide pin 123, and a fixing nut 131 for fastening the first stopper ring 129a to the bracket 141 is fastened to the screw 125. .

In addition, the operating knob 133 for locking and releasing the guide pin 123 to the guide hole 147 by contacting and separating the second stopper ring 129b from the bracket 141 at the other end of the guide pin 123. Is equipped. The operation knob 133 in the present embodiment is coupled to the other end of the guide pin 123 to be reciprocated, and the operation knob 133 controls the second stopper ring 129b by the operation of the lever 135. Contact and space the bracket (141).

Accordingly, when the first stopper ring 129a is brought into close contact with the bracket 141 by the fixing nut 131, the second stopper ring 129b is brought into close contact with the bracket 141 by the operation of the operation knob 133. , Friction occurs between the bracket 141 and each stopper ring (129a, 129b), the guide pin 123 does not move along the guide hole 147 and is locked to the guide hole 147, that is, the handle 21 ) Does not rotate relative to the front wheel frame (15). Thus, the tilting angle of the handle 21 with respect to the front wheel frame 15 can be freely adjusted by the manipulation knob 133.

Here, each of the stopper rings 129a and 129b preferably has a diameter larger than the width of the guide hole 147. In addition, the first stopper ring 129a and the fixing nut 131 may be selectively interposed. Although not shown, the operation knob 133 is screwed to the guide pin 123 without the reciprocating movement of the operation knob 133 by the operation of the lever 135 to attach the second stopper ring 129b to the bracket ( 141 may be contacted and spaced apart.

The bracket 141 has a pair of bracket bodies 143a and 143b which are arranged at intervals from each other, and a connecting portion 151 connecting the bracket bodies 143a and 143b to each other.

The bracket bodies 143a and 143b have a plate shape, and one end of the handle 21 is accommodated between the pair of bracket bodies 143a and 143b, and the handle 21 is each bracket body by the hinge shaft 145. It is rotatably coupled to 143a, 143b. On the plate surface of each bracket body 143a, 143b, the guide hole 147 which guides the movement of the guide pin 123 is formed in response to the movement of the handle 21 to the deployment position, the transit position, and the folding position. Each guide hole 147 is formed along the rotational trajectory of the handle through-hole 127 is coupled to the guide pin 123, the guide hole 147 in the present embodiment has a long hole shape of the partial arc cross section.

On the other hand, the guide hole 147 corresponding to the deployment position of the handle 21 is formed recessed from the circumference of the guide hole 147, the locking groove 149 is formed is caught by the guide pin 123. The locking groove 149 has a partial circular cross-sectional shape, and the outer circumference of the guide pin 123 is partially accommodated. Thus, the guide pin 123 is held in the locking groove 149 without moving along the guide hole 147 without the action of the external force, the handle 21 can be maintained in a stable deployment position.

In addition, one end of the front wheel frame 15 is supported by the connecting portion 151 so as not to interfere with the handle 21.

In addition, the bicycle according to the present invention further has a shift unit of a known bicycle, and the handle 21 is equipped with a shift operation unit 155, and a plurality of main chains 57a are provided on the rotational track of the main chain 57a. The shift lever 157 selectively hangs on any one of the main driven sprockets 55a, and the shift lever 157 and the shift operation unit 155 are interconnected by a shift cable 159. FIG.

Thus, when the shift operation unit 155 is operated so that the shifting cable 159 is tensioned and relaxed during the rotation of the main chain 57a, the shifting cable 159 tensions and relaxes the shift lever 157 so that the main chain ( 57a) is selectively caught by any one of the plurality of main driven sprockets 55a having different diameters. That is, as an example, when the main chain 57a is rotated while pulling the shifting cable 159 connected to the shift lever 157, the main driven sprocket 55a having a relatively large diameter among the plurality of main driven sprockets 55a is rotated. When the rear wheel 25 is rotated at a lower speed than the normal rotation speed, the shifting cable 159 is released, and the main chain 57a is rotated, the rear wheel 25 is relatively rotated. The main wheel sprocket 55a has a small diameter and is shifted at high speed so that the rear wheel 25 rotates at a higher speed than the normal rotation speed. Here, the transmission unit may be optionally interposed.

By such a configuration, a process of folding the bicycle according to the present invention will be described.

First, loosen the sleeve fixing bolt 119 coupled to the sleeve 111 and the saddle rod 83 in the bicycle use position as shown in FIG.

Next, the front frame 35 and the rear wheel frame 37 approach each other toward the saddle post 91.

At this time, as the front frame 35 and the rear wheel frame 37 approach each other, the front link 101 and the rear link 103 also approach each other toward the saddle post 91, and at the same time, respectively, to the sleeve 111. Symmetrically connected first and second arms 115 and 117 approach each other toward the saddle post 91.

In addition, as the first arm 115 and the second arm 117 approach each other toward the saddle post 91, the sleeve 111 is raised along the saddle rod 83.

Accordingly, in the bicycle according to the present invention, the front frame 35 and the rear wheel frame 37, the front link 101 and the rear link 103, the first arm 115 and the second arm 117 are saddle posts, respectively. It is folded around the 91, so that the distance between the front wheel 11 and the rear wheel 25 is reduced as shown in Figure 8, the overall length and volume of the bicycle is reduced to facilitate storage and transport.

On the other hand, the following describes the process of adjusting the height of the saddle 77 of the bicycle according to the present invention.

First, loosen the sleeve fixing bolt 119 coupled to the sleeve 111 and the saddle rod 83 in the bicycle use position. Then, loosen the rod fixing bolt 99 coupled to the saddle post 91 and the saddle rod (83).

Next, the saddle rod 83 is raised or lowered along the saddle post 91 so that the saddle 77 is positioned at a desired height. At this time. With the sleeve 111 in close contact with the upper end of the saddle post 91, the position of the saddle rod 83 is adjusted so that the scale 87 displayed on the saddle rod 83 is aligned with the end face of the sleeve 111. .

The saddle rod 83 is fixed to the saddle post 91 using the rod fixing bolt 99, and the sleeve 111 is fixed to the saddle rod 83 using the sleeve fixing bolt 119.

As a result, the height of the saddle 77 can be adjusted according to the user's body shape.

Next, a process of adjusting the tilting angle of the handle 21 of the bicycle according to the present invention will be described as follows.

First, in a state where the handle 21 is in the handle development position, the operation knob 133 is operated so that the second stopper ring 129b is spaced apart from the bracket body 143b.

Next, the guide pin 123 accommodated in the locking groove 149 is separated from the locking groove 149 by applying an external force to the saddle 77 side so that the guide pin 123 accommodated in the locking groove 149 is separated from the locking groove 149. After the handle 21 is moved to the position via the handle, that is, the handle 21 is moved so that the handle 21 achieves a predetermined tilting angle according to the user's body shape. At this time, the guide pin 123 is moved along the guide hole 147.

Subsequently, in a state in which the first stopper ring 129a is brought into close contact with the bracket main body 143a by the fixing nut 131, the operation knob 133 so that the second stopper ring 129b comes in close contact with the other bracket main body 143b. Manipulate

As such, when the stopper rings 129a and 129b come into close contact with the bracket bodies 143a and 143b, friction occurs between the bracket bodies 143a and 143b and the stopper rings 129a and 129b. 123 is locked so as not to move along the guide hole 147, the handle 21 is fixed to the tilting portion 121, the front wheel frame 15 and the handle 21 at a predetermined angle, thereby the user The bike can be exercised in a state in which the position of the handle 21 is adjusted to its body shape.

On the other hand, in the case of carrying and storing the bicycle according to the present invention in the vehicle for sports activities, etc., first, the guide pin 123 is moved along the guide hole 147 at the handle deployment position or the handle via position of the handle 21. The operation knob 133 is operated so that the second stopper ring 129b is spaced apart from the bracket body 143b.

Next, an external force is applied to the saddle 77 side to move the handle 21 to the folded handle folding position with respect to the front wheel frame 15.

Subsequently, in a state where the first stopper ring 129a is in close contact with the bracket main body 143a by the fixing nut 131, the operation knob 133 is disposed such that the second stopper ring 129b is in close contact with the other bracket main body 143b. By operating, the guide pin 123 is locked to the guide hole 147.

Thus, as shown in Figure 8, the handle 21 maintains the handle folding position relative to the front wheel frame 15, the overall length and volume of the bicycle is reduced, it is possible to reduce the space occupied by the bicycle .

It is apparent to those skilled in the art that the present invention is not limited to the described embodiments, and that various modifications and changes can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

1 is a perspective view of a bicycle according to the present invention,

2 is a front view of FIG. 1,

3 is a rear view of FIG. 1;

4 and 5 are cross-sectional views showing the operation relationship between the one-way clutch and the rear wheel shaft seen from the front of FIG.

Figure 6 is an exploded perspective view of the saddle support of Figure 1,

7 is an exploded perspective view of the tilting unit of FIG. 1;

8 is a front view showing a folded state of the bicycle according to the present invention.

＊ Description of symbols for main parts of the drawings ＊

11: front wheel 15: front wheel frame

21: handle 25: rear wheel

31: mainframe 33: head

35: front frame 37: rear wheel frame

39: connecting bracket 41: rotating shaft

50a, 50b: power train 61: one-way clutch

77: saddle 81: saddle support

83: saddle rod 85: through hole

87: scale 89: key

91: Saddle Post 93: Slit

99: rod fixing bolt 101: front link

103: rear link 111: sleeve

113: communication hole 115: the first arm

117: second arm 119: sleeve fixing bolt

121: tilting unit 123: guide pin

129a, 129b: stopper ring 133: operation knob

141: bracket 147: guide ball

Claims

A front wheel frame rotatably supporting the front wheels;

A head to which the front wheel frame is rotatably coupled;

A front frame rotatably lettered to the head;

A rear wheel frame rotatably supporting the rear wheels;

A connecting bracket coupled to the front frame and the rear wheel frame to access and space each other;

A saddle support supporting the saddle and supported by the connecting bracket;

A front link rotatably coupled to the saddle support and the head;

A rear link rotatably coupled to the saddle support and the rear wheel frame;

A sleeve reciprocally coupled to the saddle support corresponding to a bicycle use position for using the bicycle and a bicycle folding position for folding the bicycle;

A first arm rotatably coupled to the sleeve and the front link;

A second arm rotatably coupled to the sleeve and the rear link,

The saddle support includes a saddle rod for supporting the saddle, a saddle post to which the saddle rod is telescopically coupled and supported by the connecting bracket, and a rod fixing bolt for fixing the saddle rod to the saddle post.

A plurality of through holes formed in the saddle rod at a predetermined pitch along the longitudinal direction of the saddle rod;

A communication hole formed in the sleeve and communicating with the through hole;

And a sleeve fixing bolt coupled to the communication hole and the through hole corresponding to the bicycle use position to fix the sleeve to the saddle rod.

delete

The method of claim 1,

The bicycle, characterized in that the outer periphery of the saddle rod is provided with a scale indicating the position where the communication hole communicates with the through hole.

The method of claim 1,

The saddle post is a bicycle, characterized in that the slits are formed along the longitudinal direction of the saddle post, the saddle rod comprises a key coupled to the slit.

The method of claim 1,

And a gap between the rod fixing bolt coupled to the saddle post and the sleeve fixing bolt coupled to the sleeve at the bicycle use position is equal to the pitch between the through holes.

The method of claim 1,

A handle for steering the front wheel;

A handle development position interposed between the front wheel frame and the handle, wherein the handle is aligned with the front wheel frame in a straight line with respect to the front wheel frame, a handle via position extended by a predetermined angle from the handle deployment position, and from the handle deployment position And a tilting portion to which the handle is tiltably coupled to reciprocate between the folded handle folding positions.

The method of claim 7, wherein

The tilting unit,

A guide pin coupled to the handle;

A bracket supported by the front wheel frame to form a guide hole for guiding the movement of the guide pin in response to the movement of the handle deployment position, the handle via position, and the handle folding position;

A stopper ring mounted on at least one end of the guide pin so as to be reciprocated and contact and spaced apart from the bracket;

And a manipulation knob coupled to the guide pin so as to reciprocately move the stopper ring to the bracket so as to lock and release the guide pin to the guide hole.