KR102512213B1 - A bicycle that length regulation is available - Google Patents

Abstract

The present invention relates to a length-adjustable bicycle that allows the user to freely adjust the length of the bicycle according to the user's physical condition and at the same time folds it into a small volume so that it is easy to carry and store. A pair of springs 320, a pair of pipe tubes 321 formed in a cylindrical shape, a pair of fixing plates 323, a pair of bushes 326 formed in an empty cylindrical shape, a pair of roller supports ( 340), a plurality of rollers 350 formed in a disk shape having a coupling hole (name name) in the center, a pair of springs 360 having elasticity, a lever 370, and a pair of bushes formed in an empty cylindrical shape. 379, a camshaft 380, and a plurality of cam rollers 388 formed in a disc shape having an engaging hole (named name) in the center. It consists of a roller pin 389, an operating frame 390, a plurality of disc springs 398 having a buffering force, and a plurality of bolts 362 and bolts 399 for coupling.

Description

A bicycle that length regulation is available}

The present invention relates to a length-adjustable bicycle, and more particularly, allows the user to freely adjust the length of the bicycle according to the user's physical condition, and at the same time reduces the size to a small size so that it is easy to carry and store. It relates to a bicycle that can be moved freely by holding a handle without being lifted, and is also easy to mount on a vehicle and convenient to use public transportation with the bicycle.

The present inventor has previously invented a device related to a bicycle as Registered Patent No. 10-1534824, and as shown in FIGS. 20 to 22, the bicycle steering device 100 according to the present inventor is one end of the stem 10 A support part 110 provided in the support part 110, a handle part 120 provided to be coupled to the inside of the support part 110 so that the angle thereof can be changed, and the handle part 120 for adjusting the traveling direction of the bicycle by gripping the user's hand, and the handle part 120 It includes a cover part 130 coupled to the support part 110 from the upper side and a lever part 140 provided to be rotatably provided below the support part 110 to open and close the cover part 130.

The stem 10 is disposed on the top of the head tube where the top tube corresponding to the upper frame of the bicycle and the down tube disposed below meet, and is connected to the fork at the bottom to adjust the direction of the front wheel.

Generally, a handlebar is fixed to one end of the stem 10, but in the present invention, the support part 110 is provided so that the first handlebar 121 and the second handlebar 122 are engaged.

The handle part 120 includes the first handle bar 121 and the second handle bar 122, and first sawtooth surfaces of the first handle bar 121 and the second handle bar 122, respectively. (121a, 122a) are formed, and the second sawtooth (121b, 122b) is formed on the upper surface of the first sawtooth (121a, 122a), respectively.

Therefore, inside the support part 110, the left first cog 121a coupled to the first handle bar 121 and the right first cog 122a coupled to the second handle bar 122 are interlocked and interlocked. The rotation is made, and the first handle bar 121 and the second handle bar 122 rotate while maintaining the same angle in the horizontal direction.

In addition, a coupling bar 125 protrudes from one end of each of the left first cog 121a and the right first cog 122a, and a coupling piece 123 is inserted into the coupling bar 125, The coupling piece 123, the coupling bar 125, and the first handle bar 121 or the second handle bar 122 are coupled by a specific tool. A detailed description of this will be given later.

Also, left second teeth 121b are formed on the upper surface of the left first teeth 121a, and right second teeth 122b are formed on the upper surface of the right first teeth 122a.

The left second sawtooth 121b and the right second sawtooth 122b selectively mesh with the third sawtooth 131 formed on the bottom surface of the cover part 130, and a detailed description thereof will be given later.

The lever part 140 is disposed to be rotatable on the lower side of the support part 110, and a cam 141 formed to be eccentrically rotated at one end and a handle 142 formed to be gripped by a user at the other end includes

In addition, the lever part 140 includes hook bolts 143 disposed on both sides of the cam 141 so that the lever part 140 can rotate at the lower side of the support part 110 .

The ring bolt 143 is coupled to one end so that the cam 141 is rotatable by the rotation shaft 144, and the other end is connected to the support part 110 and the center of rotation of each of the first saw teeth 121a and 122a. It penetrates and is coupled to the inner bottom surface of the cover part 130.

At this time, a pair of support members 160 disposed between the handle part 120 and the cover part 130 with the ring bolt 143 penetrating the inside of the upper portion of the first teeth 121a and 122a, respectively, and , It includes an elastic member 170 disposed between the upper portion of the support members 160 and the cover part 130 and providing elastic force along the longitudinal direction of the ring bolt 143 .

Therefore, when the hook bolt 143 connects the lever part 140 and the cover part 130 and rotates the lever part 140 to be spaced apart from the bottom surface of the support part 110, the hook bolt ( 143) moves upward and is spaced apart, so that the cover part 130 is spaced upward by the elastic member 170, and a gap is generated between the cover part 130 and the handle part 120 so that the handle part Horizontal rotation of 120 becomes possible.

Conversely, when the lever part 140 is rotated so as to be fixed in close contact with the bottom surface of the support part 110, the hook bolt 143 is spaced downward due to a change in the outer diameter of the cam 141, and the cover part 130 It moves downward, and the angle of the handle part 120 is fixed while there is no gap between the cover part 130 and the handle part 120 . Here, information about fixing the angle of the handle part 120 between the handle part 120 and the cover part 130 will be described later.

Between the lever part 140 and the support part 110, a bush part 150 is provided to prevent deformation or damage caused by friction between the lever part 140 and the support part 110.

The bush part 150 includes a first bush 151 disposed to contact the cam 141 of the lever part 140 and disposed above the first bush 151 to form a contact with the first bush 151. It includes a second bush 152 interposed between the support parts 110 and a support piece 153 supporting the second bush 152 so as to be movable in a horizontal direction.

The support piece 153 is disposed on the side of the support part 110 and rotatably coupled, and is coupled from the lower side of the support part 110 to prevent the support piece 153 from being separated from the support part 110. A fixing piece 154 is provided.

The bottom surface of the first bush 151 is formed in an arc shape corresponding to the shape of the cam 141, and as the lever part 140 rotates, the first bush 151 causes friction. Gradually worn out by

A first inclined surface 151a is formed on the upper surface of the first bush 151, and steps 151b protruding from both sides along the inclined direction of the first inclined surface 151a are formed.

The second bush 152 is disposed on the first inclined surface 151a, and a second inclined surface 152a corresponding to an inclination angle of the first inclined surface 151a is formed on the bottom surface.

The first inclined surface 151a and the second inclined surface 152a are selectively pressed as the lever part 140 rotates.

The outer circumferential surface of the support piece 153 and the inside of the second bush 152 are screwed together so that according to the rotation of the support piece 153, the second bush 152 moves along the step 151b and the first inclined surface ( The conveying takes place in the horizontal direction along 151a).

According to the steering device for a bicycle according to the prior invention, first, the angle of the handlebar can be easily adjusted and used according to the user's convenience, secondly, storage or transportation is easy because the handlebar can be folded, and thirdly, the handlebar can be folded. It provides an effect that can significantly reduce the parts replacement cycle that occurs as the bush part wears out according to the angle adjustment of the bar.

An object of the present invention is to provide a simple and robust assembly of a bicycle steering device following the conventional invention as described above.

Another object is to facilitate power transmission of bicycle pedals, and to simplify the arrangement structure to match the structure of the main body.

Another purpose is to improve the exterior aesthetics by allowing the structure of the body lock device and sliding device to adjust the length of the body of the bicycle to function inside the body frame, and to combine the frames with a vertical frame and a horizontal frame with a groove-fitting structure The purpose of this is to enable safe operation by forming a solid coupling without shaking.

Another object is to simplify the structure of the stand so that the user can easily set it up with one foot and release it by improving the structure of the stand device of the bicycle.

A handle part 10 formed to adjust the left and right directions of the bicycle; and a vertical frame connected and combined with the pedal and handle part 10, the seat frame 40, the power transmission device 200, and the body lock device 300 (20) and horizontal frame (30); a seat frame 40 on which a user can sit; a pair of wheels 50; An empty pipe-shaped steering shaft 110 in which an upper steering shaft 111 formed on the upper part coupled to the handle part 10 of a bicycle and a lower steering shaft 115 formed on the lower part fitted and coupled to the steering housing 150 are integrally formed. ) and a pair of disk-shaped coupling rings 120 with an empty center, a pair of thrust plates 130 with an empty center, a pair of cylindrical bushes 140 with an empty center, and the horizontal frame 30 A steering housing 150 formed in a hollow pipe shape having a side portion formed to be formed, an upper connecting frame 161 formed in a cylindrical upper portion having a coupling hole 162 in the center and a pair of coupling holes on the lower surface, A connection frame 160 formed integrally with a lower connection frame 165 formed in a triangular shape at the lower part, an anti-rotation key 170 formed as a rectangular parallelepiped in the shape of a long stick, a lock nut 180, and a bicycle wheel part 50 at the bottom. ) It consists of a pair of wheel connection frames 190 in the shape of an empty pipe having a connection portion connected to the bicycle, and a steering device 100 connected to the handle portion 10 and the wheel 50 of the bicycle; consists of , In the steering device 100, the upper steering shaft 111 of the steering shaft 110 is connected to the handle part 10 of the bicycle, and the lower steering shaft 115 of the steering shaft 110 is connected to a coupling ring ( 120), the thrust plate 130, the upper bush 140, the steering housing 150, the lower bush 140, the thrust plate 130, and the coupling hole of the upper connection frame 161 of the connection frame 160 162 is fitted, and an anti-rotation coupling cylinder 164 having anti-rotation key coupling cutouts 164a and 164b is formed at the bottom of the coupling hole 162 of the connection frame 160, and the rotation The anti-rotation key 170 and the lock nut 180 are coupled to the coupling cutout 116a of the threaded portion 116 of the lower steering shaft 115, which is penetrated and fitted into the anti-coupler 164, and the connection frame 160 A pair of coupling cylinders 163a and 163b are formed in a pair of lower connecting frames 165 of ), and a pair of wheel connection frames 190 are fitted into the coupling cylinders 163a and 163b. It is a bicycle that can be adjusted in length, characterized by combining.

In the present invention, a QR clamp tightening head part 111a is formed at the upper coupling part of the upper steering shaft 111 formed at the upper end of the steering shaft 110, and the QR clamp tightening head part 111a has a QR clamp A QR clamp tension groove (111b) is formed so that (113) can be coupled and tightened, and a handle height adjustment pipe 112 with a pipe rotation prevention groove (112a) is inserted on the other side to form the QR clamp (113). When clamping, a QR clamp rotation prevention groove 111c into which the QR clamp rotation prevention key 113c formed inside the QR clamp 113 is inserted is formed, and the QR clamp rotation prevention key 113c has a handle height The pipe rotation prevention groove 112a of the control pipe 112 is coupled at the same time, and the QR clamp 113 has a cylindrical QR clamp holding portion 113a so that the QR clamp tightening head portion 111a can be inserted and fixed. It is formed, and while the QR clamp anti-rotation key 113c is formed inside the cylinder, the QR clamp holding part bolt hole is located in the center of the QR clamp holding coupling part 113b for tightening the QR clamp tightening head part 111a. (113d) is formed, and the holding coupling part connecting bolt 113g capable of binding the QR clamp 113 is inserted into the QR clamp holding part bolt hole 113d, and the holding coupling part connecting bolt 113g ) On one side of the holding coupling part fixing nut 113h is fastened, and on one side thereof, the QR clamp handle 113e formed with the QR clamp eccentric cam portion 113f that tightens the QR clamp 113 is bolt fastening bar 113i ) It is a bicycle capable of adjusting the length, characterized in that fastened by.

In addition, the power transmission device 200 for transmitting power generated through the pedal of a bicycle of the present invention is a long cylindrical bar shape with a center formed at the highest stage and formed in multiple stages, and a pair of snap ring grooves formed in the center ( 212) and a first shaft 210 having a pedal crank connecting portion 215 having a rectangular shape with rounded corners formed with coupling holes 216 at both ends; A disk-shaped first gear 220 having a coupling hole 223 formed in the center and protrusions at equal intervals on the rim; A second shaft 230 formed in a long cylindrical bar shape having a pair of snap ring grooves 232 formed in the center; A disk-shaped second gear 240 having a coupling hole 243 formed in the center and protrusions at equal intervals on the rim; A third shaft 250 having a long cylindrical bar shape, having a pair of snap ring grooves 252 formed in the center and having a connecting portion 255 having a rectangular shape with a coupling hole 256 formed at one end; A third gear 260 having a disk shape having a coupling hole 263 formed in the center and protrusions at equal intervals on the rim; A disk-shaped chain sprocket 270 having a rectangular coupling hole 273 formed in the center, a plurality of coupling holes 275 formed in a circular shape around the coupling hole 273, and protrusions at equal intervals on the rim; A disk-shaped sprocket support plate 280 having a rectangular coupling hole 283 formed in the center and a plurality of coupling holes 285 formed in a circular shape around the coupling hole 283; A support plate 290 of a circular plate having a circular coupling hole 293 formed in the center and a plurality of coupling holes 295 formed in a circular shape around the coupling hole 293; A ball bearing 239 fitted to the outside of one side of the second shaft 230 and positioned in the vertical frame 20 of the bicycle; A ball bearing 249 fitted to the outside of the other side of the second shaft 230 and positioned inside the second gear 240; and between the snap ring grooves 212 of the first shaft 210 After the first gear 220 is coupled, one side portion is fitted and coupled to the vertical frame 20 of the bicycle, and the ball bearing 249 is coupled between the snap ring grooves 232 of the second shaft 230 The second gear 240 is coupled and located, the ball bearing 239 is coupled to one side and then fitted and coupled to the vertical frame 20 of the bicycle, and between the snap ring grooves 252 of the third shaft 250 The third gear 260 is coupled and positioned, one side portion is fitted and coupled to the vertical frame 20 of the bicycle, and the connection portion 255 on one side is positioned where the sprocket support plate 280 and the chain sprocket 270 are coupled. And, the support plate 290 is located outside the chain sprocket 270, and the coupling hole 293 of the support plate 290 and the coupling hole 256 of the third shaft 250 are coupled through a bolt or the like, The first gear 220 coupled to the first shaft 210, the second gear 240 coupled to the second shaft 230, and the third gear 260 coupled to the third shaft 250 are engaged and coupled to each other, The chain is coupled to the chain sprocket 270 and the wheel portion 50 of the bicycle, and the power generated through the rotation of the pedal of the bicycle coupled to the pedal crank connection portion 215 of the first shaft 210 Length characterized in that the bicycle is driven by being transmitted to the wheel portion 50 of the bicycle connected to the chain sprocket 270 through the first gear 220, the second gear 240, and the third gear 260 It is an adjustable bike.

In addition, the body lock device 300 for adjusting the length of the bicycle of the present invention has a main body 311 located in the center and a pair of coupling holes 313 formed on the lower side and a pair of coupling holes 315 formed on both sides ) And having a lower body 312 located on both sides of the main body 311, a coupling hole 317 in the center, and a connecting portion 316 formed by a pair on both sides, and provided with both sides of the main body 311 A body presser 310 integrally formed with a pair of side bodies 314 located at; And, a pair of springs 320 having an elastic force; A pair of pipe tubes 321 formed in a cylindrical shape; A pair of fixing plates 323 formed of a rectangular parallelepiped having coupling holes 324 formed on the upper and lower sides and coupling holes 325 formed on the side surfaces; A pair of roller supports 340 formed in a shape having a connecting hole 342 formed on one side of the upper side, a roller coupling hole 344 formed on the side of the other upper side, and a coupling hole 345 formed on the lower front side. ); A plurality of rollers 350 formed in a disk shape having a coupling hole in the center; A pair of springs 360 having an elastic force; a lever 370 integrally formed with a disk-shaped main body 371 having a coupling hole 372 in the center and a long bar-shaped handle portion 375; A kind of cylindrical main body 381 in which a plurality of connecting parts 382 having a coupling hole 383 in the center are positioned at regular intervals and a lever connecting part having a rectangular shape with rounded corners formed on one side of the main body 381 ( 384), a camshaft 380 integrally formed with a cylindrical vertical frame connecting portion 385 formed on the other side of the main body 381; A plurality of cam rollers 388 formed in a disk shape having a coupling hole in the center; roller pin 389; The main body 391 having a pair of coupling holes 393 on both sides of the upper part and a stopper 392 protruding in the center and the main body side parts 395 formed on both sides of the main body 391 are integrally formed, so that the corner an operating frame 390 formed in a long U-shape with a round and laid down; It consists of a plurality of bolts 362 and bolts 399 for coupling; and a pair of roller supports ( 340) are located, respectively, and the support pin 352 is coupled to the coupling hole 317 of the connection part 316 and the coupling hole 342 of the roller support 340, on both sides of the roller support 340. After the roller 350 is positioned, it is coupled to the roller coupling hole 344 of the roller support 340 and the coupling hole (named name) of the roller 350 through the roller shaft 354, and the body presser 310 The spring 360 and the bolt 362 are positioned and coupled to the coupling hole 315 of the lower body 312 and the coupling hole 345 of the roller support 340, and the lower part of the body presser 310 The spring 320 located at the lower part of the body 312, the coupling hole 313 of the lower body 312, the pipe pipe 321 fitted to the spring 320, and the pipe through the coupling hole 324 A fixing plate 323 fitted to the lower portion of the pipe 321, a bush 326 positioned below the fixing plate 323 and fitted to the pipe pipe 321, and a main body 391 of the operating frame 390 A plurality of disc springs 398 are located on the lower surface, and a pair of bolts 399 connect the disc spring 398, the operating frame 390, the bush 326, the fixing plate 323, and the pipe pipe 321. , The spring 320 is fitted into the coupling hole 313 of the lower body 312 of the body presser 310, and between the plurality of connection parts 382 formed in the body 381 of the camshaft 380 A plurality of cam rollers 388 are located in and coupled to the coupling hole 383 of the connection part 382 and the coupling hole (named name) of the cam roller 388 with a roller pin 389, and the lever connection part 384 After the bush 379 is coupled to the main body 371 of the lever 370, it is coupled to the coupling hole (unnamed) of the lever connection part 384 and the coupling hole 372 of the lever 370 with a bolt or the like, , the combined The camshaft 380 is a bicycle capable of adjusting the length, characterized in that the body lock device 300 is formed by being located on one side of the stopper 392 of the operating frame 390.

The stand device 400 for fixing the bicycle of the present invention is provided with a plurality of coupling holes 412 located on the upper side and formed in an L-shape bent with a certain angle on the upper side. A pair of upper body coupling member 411 A plurality of movable protrusions 414 having a fixing direction seating groove 417 formed on one side between an inclined surface 416 and the inclined surface 416, a plurality of use direction seating grooves 415, and a plurality of fixing directions Seating grooves 417 and a plurality of control protrusions 418 are alternately located, and the lower body coupling member 413 formed in the lower part in a lying cylindrical shape having a coupling hole 419 formed in the center is integrally formed. Body coupling member (410); and a movable plate in which a seat protrusion 422 formed on one surface and a connecting hole 425 formed in the center of a disc-shaped main body coupling member connecting portion 421 and a cylindrical pipe connecting portion 427 are integrally formed. (420); a long cylindrical pipe 430 coupled to the movable plate 420; Scaffolding 440 coupled to the lower portion of the pipe 430; a spring 460 having elasticity; A disk-shaped flat washer 470; a hollow cylindrical bush 480; It consists of a bolt 490 and a nut 492 for coupling; one side of the lower body coupling member 413 has a fixing direction seating groove 417 and a movable projection 414, a use direction seating groove 415 ), the control protrusion 418, the fixing direction seating groove 417, the movable protrusion 414, the use direction seating groove 415, and the control protrusion 418 are located in the order of the components, and the body coupling member 410 ) The seating protrusion 422 formed on one side of the movable plate 420 is located on one side of the lower body coupling member 413 on which the use direction seating groove 415 is formed, and the lower portion of the body coupling member 410 A spring 460 is located on the other side of the body coupling member 413, a flat washer 470 is located outside the spring 460, and a nut 492 is located outside the flat washer 470, and the movable A bush 480 is positioned outside the other side surface of the plate 420, and a bolt 490 is positioned outside the bush 480, and the bolt 490 connects the bush 480 and the movable plate 420. The coupling hole 425 of the body coupling member connection portion 421, the coupling hole 419 of the lower body coupling member 413 of the body coupling member 410, the coupling hole (named name) of the spring 460, flat It is fitted into the coupling hole (name name) of the washer 470 and coupled to the nut 492, and the pipe 430 is fitted into the pipe connection portion 427 of the movable plate 420, and the pipe 430 The foot plate 440 is fitted to the lower end of the stand device 400, and the stand device 400 formed in this way is formed through the coupling hole 412 of the upper body coupling member 411 of the body coupling member 410. It is a bicycle whose length can be adjusted, characterized in that it is combined with a bicycle through a bolt or the like.

As described above, the present invention has the effect of enabling simple and robust assembly of the coupling of the bicycle steering device, and also prevents rotation to prevent the handle height adjusting pipe from turning in the other direction when the QR clamp is released when the handle height is adjusted. Since there is a key, it has the effect of maintaining the front wheel and steering wheel at 90 degrees.

Another effect is to facilitate the power transmission of bicycle pedals and to simplify the arrangement structure to match the structure of the main body. Also, if the chain sprocket is on the pedal crank shaft, it moves forward as much as the sprocket radius in front of the vertical frame. As it comes out, the reduction is less, so the reduction rate can be further increased by installing the sprocket on the 3rd gear shaft, and by amplifying the rotation using the 1st, 2nd, and 3rd gears, the sprocket diameter can be used small, so external exposure can be reduced. In addition, since the chain sprocket does not protrude, there is an effect of significantly reducing the insertion of other materials.

Another purpose is to improve the exterior aesthetics by allowing the structure of the body lock device and sliding device to adjust the length of the body of the bicycle to function inside the body frame, and to combine the frames with a vertical frame and a horizontal frame with a groove-fitting structure By doing so, there is an effect of enabling safe operation by forming a solid coupling without shaking.

Another effect is to improve the structure of the stand device of the bicycle, so that the user can easily set up and release the stand with one foot, thereby simplifying the structure of the stand.

1 is a perspective view of a bicycle capable of adjusting the length of the present inventors.
Figure 2 is a perspective view from another side of the present inventors adjustable length bicycle.
3 and 4 are side views of a bicycle capable of adjusting the length of the present inventors.
Figure 5a is an exploded perspective view of the steering device of the inventors adjustable bicycle length.
Figure 5b is an exploded partial perspective view of the steering device of the inventors adjustable bicycle length.
Figure 5c is an exploded overall perspective view of the steering device of the inventors adjustable bicycle length.
Figure 5d is an exploded perspective view of a steering shaft and a handle height adjusting pipe of a steering device of a bicycle capable of adjusting the length of the inventors.
Figure 5e is a perspective view of the QR clamp of the steering device of the present inventors adjustable bicycle length.
6 is a front view of a power transmission device for a bicycle whose length can be adjusted according to the present inventors.
7 is a side view of a power transmission device for a bicycle whose length can be adjusted according to the present inventors.
8 is an exploded perspective view of a power transmission device for a bicycle whose length can be adjusted according to the present inventors.
9 is a front view when the body lock device of the present inventors adjustable length bicycle is locked.
Figure 10 is a side view of the body lock device of the present inventors adjustable length bicycle is locked.
11 is a front view of the body lock device of the present inventors adjustable length bicycle is unlocked.
12 is a side view when the body lock device of the present inventors adjustable length bicycle is unlocked.
Figure 13 is an exploded perspective view of the body lock device of the inventors adjustable bicycle body length.
14 is a perspective view of a stand device for a bicycle capable of adjusting the length of the present inventors.
15 is an exploded perspective view of a stand device for a bicycle whose length is adjustable according to the present inventors.
Figure 16 is a perspective view, a front view, and a side view of the main body coupling member of the inventor's stand device for a bicycle whose length can be adjusted.
17 is a cross-sectional view of a body coupling member of a stand device for a bicycle whose length is adjustable according to the present inventors.
18 is a perspective view, a front view, and a side view of a movable plate of a stand device of a bicycle capable of adjusting the length of the present inventors.
19 is a front view and a side view of a movable plate of a stand device for a bicycle whose length is adjustable according to the present inventors.
20 is a perspective view showing a steering device for a bicycle according to an embodiment of the prior invention of the present inventor applied to the present invention.
21 is an exploded perspective view showing the steering device for a bicycle shown in FIG. 20 in an exploded view;
22 is a perspective view showing a folded state of the bicycle steering device shown in FIG. 21;

Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited due to the examples described below. This embodiment is provided to more completely explain the present invention to those skilled in the art. Therefore, the shapes of components in the drawings are exaggerated to emphasize a clearer explanation.

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

1 is a perspective view of an adjustable length bicycle of the present inventor, Figure 2 is a perspective view from another side of the adjustable length bicycle of the present inventor, Figures 3 and 4 are a side view of the adjustable length bicycle of the present inventor, Figure 5a is the present invention An exploded perspective view of a steering device of a bicycle capable of adjusting the handlebar height of the inventor, and FIG. 5B is an exploded perspective view of the steering device for the combination of a steering shaft and a fork according to the present invention.

Figure 6 is a front view of the power transmission device of the present inventors adjustable length bicycle, Figure 7 is a side view of the power transmission device of the inventors length adjustable bicycle, Figure 8 is a power transmission device of the inventors length adjustable bicycle An exploded perspective view, Figure 9 is a front view when the body lock device of the present inventors length adjustable bicycle is locked, Figure 10 is a side view when the inventor length adjustable bicycle body lock device is locked, Figure 11 is the present invention Figure 12 is a side view of the length-adjustable bicycle body lock device of the present inventor when the body lock device is unlocked, Figure 13 is a length-adjustable bicycle of the present inventor Figure 14 is an exploded perspective view of the body lock device of the present inventor, a perspective view of a stand device for a bicycle whose length can be adjusted by the present inventor, Figure 15 is an exploded perspective view of a stand device of a bicycle whose length is adjustable by the present inventor, Figure 16 is a length adjustable by the present inventor 17 is a cross-sectional view of the body coupling member of the stand device of the bicycle stand device of the present invention, Figure 18 is a movement of the stand device of the present inventor adjustable length bicycle A perspective view, a front view, and a side view of the plate, FIG. 19 is a front view and a side view of the movable plate of the stand device of the present invention adjustable bicycle stand.

At this time, the thickness of lines or the size of components shown in the accompanying drawings to explain the preferred embodiment of the present invention may be exaggerated or omitted for clarity and convenience of description, and according to the reference numerals in the drawings The terms given are terms defined in consideration of functions in the present invention, which may vary according to the intention or practice of a user or operator.

As shown in FIGS. 1 to 4, schematically looking at the components of a bicycle capable of adjusting the length according to the present invention, the handle portion 10, the vertical frame 20, the horizontal frame 30, the seat frame 40, The steering device 100 connected to the wheel 50, the handle part 10 and the wheel 50, the power transmission device 200 connected to the vertical frame 20, and the body connected to the vertical frame 20 and the horizontal frame 30 It consists of a lock device 300 and a stand device 400 connected to the vertical frame 20.

A detailed description of the above components is as follows.

The handle part 10 is formed so that the user can adjust the left and right directions of the bicycle.

The vertical frame 20 is connected to the bicycle's pedal crank (named name), the power transmission device 200, and the body lock device 300, and is connected to the seat frame 40 to fit the user's physical condition. Allows you to freely adjust the length.

The horizontal frame 30 supports to adjust the length according to the movement of the vertical frame 20 and the seat frame 40.

The seat frame 40 is a place where the user can sit, and the length of the bicycle can be adjusted according to the combination with the vertical frame 20 and movement in the horizontal frame 30 .

The wheels 50 are composed of a pair, and the number of wheels may be configured differently depending on the purpose and configuration.

As shown in FIG. 5, the steering device 100 is a device that is connected to the handle part 10 and the wheel 50 of the bicycle to adjust the direction of the bicycle, and includes a steering shaft 110 and a coupling ring 120 , a pair of thrust plates 130, a pair of bushes 140, a steering housing 150, a connecting frame 160, an anti-rotation key 170, a lock nut 180, a pair of wheel connecting frames ( 190).

The steering shaft 110 is an empty bin in which an upper steering shaft 111 formed on an upper part coupled to the handle part 10 of a bicycle and a lower steering shaft 115 formed on a lower part fitted and coupled to a steering housing 150 are integrally formed. It is made in the shape of a pipe.

The lower steering shaft 115 has one end of a threaded portion 116 coupled to an anti-rotation key 170 and a lock nut 180 in a connecting frame 160 to be described later.

The coupling ring 120 has a disk shape with an empty center and is fitted to the lower steering shaft 115 of the steering shaft 110.

The thrust plate 130 is fitted to the lower steering shaft 115 of the steering shaft 110 and is located below the coupling ring 120, and the steering shaft 110 and a bush 140 to be described later and a steering wheel It serves to reduce compression and frictional force with the housing 150.

The bush 140 has a cylindrical shape with a hollow center and is fitted to the lower steering shaft 115 of the steering shaft 110 and is positioned below the thrust plate 130 .

The steering housing 150 is formed in a hollow pipe shape having a side portion (name name) formed to be connected to the horizontal frame 30, and the coupling ring 120, the thrust plate 130, and the bush 140 are The lower steering shaft 115 of the fitting defective steering shaft 110 is fitted.

The connection frame 160 has an upper connection frame 161 formed on the upper part in a cylindrical shape having a coupling hole 162 in the center and a pair of fork coupling holes (named) on the lower surface, and has a triangular shape on the lower side. The formed lower connection frame 165 is integrally formed.

The anti-rotation key 170 is a long bar-shaped rectangular parallelepiped, and is coupled to the threaded portion 116 of the steering shaft 110 to combine the steering shaft 110 and the connection frame 160 and prevent rotation. do.

The locknut 180 is located at the lower end of the connection frame 160 so that the steering shaft 110 and the connection frame 160 are fixed and coupled.

The wheel connection frame 190 has a shape of an empty pipe having a connection portion (named name) connected to the wheel portion 50 of a bicycle at the lower end, and a pair of coupling holes (named name) of the lower connection frame 165 ) is fitted into the

As shown in FIGS. 1 to 5, the coupling of the steering device 100 is as follows.

The upper steering shaft 111 of the steering shaft 110 is connected to the handle part 10 of the bicycle, and the coupling ring 120 and the thrust plate 130 are connected to the lower steering shaft 115 of the steering shaft 110. , The bush 140, the steering housing 150, the bush 140, the thrust plate 130, and the coupling hole 162 of the upper connection frame 161 of the connection frame 160 are fitted, and the connection frame ( 160), an anti-rotation key 170 and a lock nut 180 are located at the bottom of the coupling hole 162, and are fitted and fixed to the threaded portion 116 of the lower steering shaft 115, and the connection frame 160 A pair of wheel connection frames 190 are fitted to a pair of lower connection frames 165 to form the steering device 100.

That is, in the steering device 100, the upper steering shaft 111 of the steering shaft 110 is connected to the handle part 10 of the bicycle, and the lower steering shaft 115 of the steering shaft 110 is connected to the coupling ring. Combination of 120, thrust plate 130, upper bush 140, steering housing 150, lower bush 140, thrust plate 130, upper connection frame 161 of connection frame 160 The ball 162 is fitted, and an anti-rotation coupling cylinder 164 having anti-rotation key coupling cutouts 164a and 164b is formed at the bottom of the coupling hole 162 of the connection frame 160, and the The anti-rotation key 170 and the lock nut 180 are coupled to the coupling cutout 116a of the threaded portion 116 of the lower steering shaft 115 penetrated and fitted into the anti-rotation coupling cylinder 164, and the connection frame ( 160), a pair of coupling cylinders 163a and 163b are formed in the pair of lower connecting frames 165, and a pair of wheel connection frames 190 are fitted or welded to the coupling cylinders 163a and 163b. will be.

Next, a clamping structure for coupling the upper end of the steering shaft will be described.

Figure 5c is an exploded perspective view of the entire length-adjustable bicycle steering device of the present inventors, Figure 5d is an exploded perspective view of the steering shaft and handle height adjusting pipe of the present inventors length-adjustable bicycle steering device, Figure 5e is the present inventors This is a perspective view of the QR clamp of the steering device of a bicycle whose length can be adjusted.

A QR clamp tightening head part 111a is formed at the upper coupling part of the upper steering shaft 111 formed at the upper end of the steering shaft 110, and a QR clamp 113 is formed on the QR clamp tightening head part 111a. When the QR clamp tension groove (111b) is formed so that it can be combined and tightened, and the handle height adjustment pipe 112 with the pipe rotation prevention groove (112a) formed on the other side is inserted to clamp the QR clamp (113) A QR clamp rotation prevention groove 111c into which the QR clamp rotation prevention key 113c formed inside the QR clamp 113 is inserted is formed, and the handle height adjustment pipe 112 is installed in the QR clamp rotation prevention key 113c. ) of the pipe anti-rotation groove (112a) is coupled at the same time.

The QR clamp 113 is formed with a cylindrical QR clamp holding part 113a so that the QR clamp tightening head part 111a can be inserted and fixed, and a QR clamp rotation prevention key 113c is formed inside the cylinder. As such, a QR clamp holding bolt hole 113d is formed in the center of the QR clamp holding coupling part 113b for tightening the QR clamp tightening head part 111a.

A holding coupling part connection bolt 113g capable of binding the QR clamp 113 is inserted into the QR clamp holding portion bolt hole 113d, and a holding coupling portion is fixed to one side of the holding coupling portion connection bolt 113g. A nut 113h is fastened, and a QR clamp handle 113e forming a QR clamp eccentric cam portion 113f for fastening the QR clamp 113 is fastened to one side thereof by a bolt fastening bar 113i.

The coupling method of the QR clamp 113 is to put the QR clamp anti-rotation groove 111c and the QR clamp anti-rotation key 113c on the QR clamp tightening head part 111a of the upper steering shaft 110. The QR clamp 113 is first inserted, the handle height adjustment pipe 112 is inserted through the QR clamp tightening head part 111a, and then the QR clamp eccentric cam part 113f of the QR clamp 113 is rotated. In this case, the QR clamp holding coupling part 113b is tightened by the eccentric cam of the QR clamp eccentric cam part 113f.

Therefore, since the pipe rotation prevention groove 112a of the handle height adjustment pipe 112 bound by the QR clamp 113 is combined with the QR clamp rotation prevention key 113c, thereby the handle height adjustment pipe (112) is safely assembled without rotation, and the steering wheel does not turn even during driving, enabling safe operation.

6 to 8 are front views, side views, and exploded perspective views of a power transmission device for a bicycle whose length can be adjusted by the present inventor, schematically showing the components of the power transmission device 200, a first shaft 210 and a second shaft 230, the third shaft 250, the first gear 220 and the second gear 240, the third gear 260, which are engaged with each other on one side of the bicycle to transmit power, located on the other side of the bicycle It consists of a chain sprocket 270, a sprocket support plate 280, a support plate 290, a ball bearing 239 located on the lower frame 20 of the bicycle, and a ball bearing 249 located inside the second gear 240.

The first shaft 210 has a long cylindrical bar shape formed at the highest end in the center and formed in multiple stages, and has rounded corners with a pair of snap ring grooves 212 formed in the center and coupling holes 216 formed at both ends. A pedal crank connecting portion 215 having a rectangular shape is provided.

The first gear 220 is a disk-shaped rotating body having a coupling hole 223 formed in the center and protrusions (names) at equal intervals on the rim, and is a device for transmitting rotation or power.

The coupling hole 223 is formed in a corresponding size so as to be coupled with the first shaft 210 .

The second shaft 230 is formed in a long cylindrical bar shape having a pair of snap ring grooves 232 formed in the center.

The second gear 240 is a disk-shaped rotating body having a coupling hole 243 formed in the center and protrusions (names) at equal intervals on the rim, and is a device for transmitting rotation or power.

The coupling hole 243 is formed in a corresponding size so as to be coupled with the second shaft 230 .

The third shaft 250 has a long cylindrical bar shape, has a pair of snap ring grooves 252 formed in the center, and has a rectangular shape connecting portion 255 having a coupling hole 256 formed at one end. It is provided.

The third gear 260 is a disk-shaped rotating body having a coupling hole 263 formed in the center and protrusions (names) at equal intervals on the rim, and is a device for transmitting rotation or power.

The coupling hole 263 is formed in a corresponding size so as to be coupled with the connecting portion 255 of the third shaft 250 .

The chain sprocket 270 has a rectangular coupling hole 273 formed in the center, a plurality of coupling holes 275 formed in a circle around the coupling hole 273, and protrusions (names) at equal intervals on the rim. It is a disc-shaped rotary body equipped with a chain that is wound around the rim to transmit rotation or power.

The coupling hole 273 is formed in a corresponding size so as to be coupled with the connecting portion 255 of the third shaft 250 .

The sprocket support plate 280 has a disk shape having a rectangular coupling hole 283 formed in the center and a plurality of coupling holes 285 formed in a circular shape around the coupling hole 283, and the chain sprocket 270 ), that is, positioned between the lower frame 20 and the chain sprocket 270 of the bicycle to support the chain sprocket 270.

The support plate 290 has a circular plate shape having a circular coupling hole 293 formed in the center and a plurality of coupling holes 295 formed in a circular shape around the coupling hole 293, and the chain sprocket 270 It is located outside to support the chain sprocket 270.

The coupling hole 293 is formed in a size corresponding to the coupling hole 256 of the third shaft 250, and the coupling hole 293 and the coupling hole 256 are coupled with a bolt or the like.

The ball bearing 239 is fitted to the outside of one side of the second shaft 230 to be inserted into the inner groove of the second gear, and serves to smooth rotation and reduce energy loss due to friction that occurs when passing each other while rotating. do.

The ball bearing 249 is fitted to the outside of the other side of the second shaft 230 and is located inside the second gear 240 to facilitate rotation and reduce energy loss due to friction when they pass each other while rotating. do

As shown in Figure 7, the combination of the power transmission device 200 is as follows.

The first gear 220 is coupled between the snap ring grooves 212 of the first shaft 210, and one side portion is fitted and coupled to the vertical frame 20 of the bicycle, and the second shaft 230 After the ball bearing 249 is coupled between the snap ring grooves 232 of the second gear 240 is coupled and positioned, and after the ball bearing 239 is coupled to one side, it is inserted into the vertical frame 20 of the bicycle and bolted to position , The third gear 260 is coupled and positioned between the snap ring grooves 252 of the third shaft 250, and one side portion is fitted and coupled to the vertical frame 20 of the bicycle, and the connection portion 255 on one side ) is located where the sprocket support plate 280 and the chain sprocket 270 are coupled, and the support plate 290 is located outside the chain sprocket 270 so that the coupling hole 293 of the support plate 290 and the third shaft The coupling hole 256 of 250 is coupled through a bolt or the like.

The first gear 220 coupled to the first shaft 210, the second gear 240 coupled to the second shaft 230, and the third gear 260 coupled to the third shaft 250 are engaged and coupled to each other, The chain is coupled to the chain sprocket 270 and the wheel portion 50 of the bicycle, and the power generated through the rotation of the pedal of the bicycle coupled to the pedal crank connection portion 215 of the first shaft 210 Through the first gear 220, the second gear 240, and the third gear 260, the chain is transmitted to the wheel part 50 of the bicycle connected to the sprocket 270, and the bicycle is driven.

9 to 13 are an exploded perspective view of the body lock device of the present inventors, a length-adjustable bicycle, schematically looking at the components of the body lock device 300, a body presser 310 and a pair of springs having elastic force ( 320), a pair of pipe tubes 321 formed in a cylindrical shape, a pair of fixing plates 323, a pair of bushes 326 formed in an empty cylindrical shape, a pair of roller supports 340, a coupling hole in the center A plurality of rollers 350 formed in a disk shape having (name), a pair of springs 360 having elasticity, a lever 370, a pair of bushes 379 formed in an empty cylindrical shape, a camshaft ( 380), a plurality of cam rollers 388 formed in a disk shape having a coupling hole (named name) in the center. It consists of a roller pin 389, an operating frame 390, a plurality of disc springs 398 having a buffering force, and a plurality of bolts 362 and bolts 399 for coupling.

The body presser 310 is provided with a main body 311 located in the center, a pair of coupling holes 313 formed on the lower side, and a pair of coupling holes 315 formed on both sides of the main body 311. A pair of side bodies 314 having a lower body 312 located on both sides and having a coupling hole 317 in the center and having a pair of connection parts 316 formed on both sides and located on both sides of the body 311 ) is integrally formed.

The coupling hole 313 is fitted and coupled to a pipe pipe 321 to be described later.

A roller support 340, which will be described later, is located between the pair of connection parts 316, and the coupling hole 317 connects the connection part coupling hole 342 of the roller support 340 and the support pin 352 to be described later. connected through the

The fixing plate 323 is composed of a rectangular parallelepiped having coupling holes 324 formed on the upper and lower sides and coupling holes 325 formed on the side surfaces.

The roller support 340 has a coupling hole 342 formed on one side of the upper side, a roller coupling hole 344 formed on the side of the other side of the upper side, and a coupling hole 345 formed on the front side of the lower side. do.

The lever 370 is integrally formed with a disk-shaped main body 371 having a coupling hole 372 in the center and a long bar-shaped handle portion 375.

The camshaft 380 has a cylindrical main body 381 in which a plurality of connection parts 382 having a coupling hole 383 in the center are positioned at regular intervals and a corner formed on one side of the main body 381 is rounded. The rectangular-shaped lever connection part 384 and the cylindrical vertical frame connection part 385 formed on the other side of the main body 381 are integrally formed.

The operating frame 390 includes a main body 391 having a pair of coupling holes 393 on both sides of the upper part and a stopper 392 protruding in the center and side parts 395 of the main body formed on both sides of the main body 391. is formed integrally, and is formed in a long U-shape with rounded corners.

The main body side part 395 stably supports the position of the disc spring 398 and the bolt 399 and the coupling of the bolt 399, which will be described later.

The coupling of the body lock device 300 is as follows.

A pair of roller supports 340 are located between a pair of connection parts 316 formed on the side body 314 of the body presser 310, respectively, and the coupling hole 317 of the connection part 316 and the roller The support pin 352 is coupled to the connecting hole 342 of the support 340, and after the rollers 350 are located on both sides of the roller support 340, the roller coupling hole 344 of the roller support 340 ) and the coupling hole (name name) of the roller 350 through the roller shaft 354, and the coupling hole 315 of the lower body 312 of the body presser 310 and the roller support 340 The spring 360 and the bolt 362 are positioned and coupled to the coupling hole 345 of the body, and the spring 320 and the lower body 312 located below the lower body 312 of the body presser 310 ) of the coupling hole 313 and the pipe pipe 321 fitted to the spring 320, the fixing plate 323 fitted to the lower portion of the pipe pipe 321 through the coupling hole 324, and the fixing plate 323 ), and a bush 326 fitted to the pipe pipe 321 is located at the lower part of the pipe 321.

A plurality of disc springs 398 are located on the lower surface of the main body 391 of the operating frame 390, and a pair of bolts 399 connect the disc spring 398, the operating frame 390, and the bush 326. , The fixing plate 323, the pipe tube 321, the spring 320, and the body presser 310 are fitted into the coupling hole 313 of the lower body 312.

A plurality of cam rollers 388 are positioned between the plurality of connecting parts 382 formed on the main body 381 of the camshaft 380, and the coupling holes 383 of the connecting parts 382 and the cam rollers 388 are coupled. The roller pin 389 is coupled to the ball (named name), and after the bush 379 is coupled to the lever connecting portion 384, it is coupled to the main body 371 of the lever 370 and the coupling hole of the lever connecting portion 384 (Name) and the coupling hole 372 of the lever 370 are coupled with a bolt or the like, and the coupled camshaft 380 is located on one side of the stop portion 392 of the operating frame 390.

9 and 10 are a front view and a side view when the body lock device of the present inventors adjustable length bicycle is locked, the locking of the body lock device 300 is as follows.

When the user raises the lever 370 of the body lock device 300 upward, the cam roller 388 of the camshaft 380 connected to the lever 370 is located in the center and pushes the operating frame 390. The connected body presser 310 also goes down, and the outer part of the roller support 340 coupled with the body presser 310 operates as a rotating shaft while the support new support plate 352 moves to the horizontal frame 30 of the bicycle. ) is pressed upward to fix and lock the body lock device 300, so that there is no space between the vertical frame 20 and the horizontal frame 30 of the bicycle.

When the body lock device is locked, the horizontal frame slant groove (30a) is inserted into the vertical frame slant protrusion (20a) to prevent left and right shaking of the vertical frame (20) and the horizontal frame (30), and the coupling surface has a slant structure. It is made of a long surface formed a lot of friction to form a strong coupling between the vertical frame 20 and the horizontal frame (30).

The shape of the vertical frame oblique projections 20a and the horizontal frame oblique grooves 30a is a trapezoidal preferred embodiment, and takes the form of male and female guide rails. It is possible to flexibly accommodate the horizontal frame oblique groove (30a) of the body lock device coming down by the elasticity of the.

11 and 12 are a front view and a side view when the body lock device of the present inventors adjustable length bicycle is unlocked, and the unlock of the body lock device 300 is as follows.

When the user lowers the lever 370 of the body lock device 300 to the lower side, the cam roller 388 of the camshaft 380 connected to the lever 370 is positioned to the left side and pushes the cam roller 388 to the center. The pressing force on the frame 390 disappears and the connected body presser 310 also rises from the bottom to the top, and the roller support 340 combined with the body presser 310 operates with the support new support plate 352 as a rotation axis. The outer part goes down from the upper side to the lower side to unlock the body lock device 300, and accordingly, a space is formed between the vertical frame 20 and the horizontal frame 30 of the bicycle.

When the body lock device is released, the spring 320 pushes the horizontal frame oblique groove 30a upward of the vertical frame oblique projection 20a to create a space, and the roller 350 is a rail formed inside the horizontal frame 30. rides back and forth.

14 and 15 are a perspective view and an exploded perspective view of a stand device for a bicycle whose length can be adjusted by the present inventor, wherein the stand device 400 is coupled to the body coupling member 410, the movable plate 420, and the movable plate 420. A long cylindrical pipe 430, a scaffold 440 coupled to the lower portion of the pipe 430, a spring 460 having elasticity, a disk-shaped flat washer 470, an empty cylindrical bush 480, a coupling It consists of a bolt 490 and a nut 492 for.

As shown in FIGS. 16 and 17, the body coupling member 410 has a plurality of coupling holes 412 located at the top and is formed in an L-shape bent with a certain angle on the upper side. ) and a pair of inclined surfaces 416 and a plurality of movable protrusions 414 having a fixing direction seating groove 417 formed on one side between the inclined surfaces 416 and a plurality of use direction seating grooves 415, A plurality of fixing direction seating grooves 417 and a plurality of control protrusions 418 are alternately located, and the lower body coupling member 413 formed in the lower part is integrally formed in a flat cylindrical shape having a coupling hole 419 formed in the center. do.

On one side of the lower body coupling member 413, there is a fixing direction seating groove 417, a movable protrusion 414, a use direction seating groove 415, a control protrusion 418, a fixing direction seating groove 417, and a movable The components are located in the order of the possible protrusion 414, the use direction seating groove 415, and the control protrusion 418.

Through the coupling hole 412, it is combined with a bicycle with a bolt or the like.

As shown in FIGS. 18 and 19, the movable plate 420 has a seat protrusion 422 formed on one surface and a coupling hole 425 formed in the center of the disk-shaped main body coupling member connecting portion 421 and a cylindrical shape. The pipe connection part 427 is integrally formed.

The footrest 440 may have a lower end made of rubber or the like, and serves to support and fix a bicycle that has stopped moving.

The flat washer 470 is used inside the nut to prevent loosening of the bolt and nut due to vibration or the like.

As shown in FIGS. 14 and 15, the combination of the stand device 400 for a bicycle whose length is adjustable according to the present invention is as follows.

A seating protrusion 422 formed on one side of the movable plate 420 is located on one side of the lower body coupling member 413 of the body coupling member 410 on which the use direction seating groove 415 is formed, and the body coupling A spring 460 is located on the other side of the lower body coupling member 413 of the member 410, a flat washer 470 is placed outside the spring 460, and a nut 492 is placed outside the flat washer 470. is located, the bush 480 is located outside the other side surface of the movable plate 420, the bolt 490 is located outside the bush 480, and the bolt 490 is connected to the bush 480. The coupling hole 425 of the body coupling member connecting portion 421 of the movable plate 420, the coupling hole 419 of the lower body coupling member 413 of the body coupling member 410, and the coupling hole of the spring 460 (name name), it is fitted into the coupling hole (name name) of the flat washer 470 and coupled with the nut 492, and the pipe 430 is fitted and coupled to the pipe connection part 427 of the movable plate 420, , The scaffold 440 is fitted to the lower end of the pipe 430.

The stand device 400 thus formed is coupled to the bicycle with bolts or the like through the coupling hole 412 of the upper body coupling member 411 of the body coupling member 410.

In the above, the configuration and operation of a bicycle capable of adjusting the length according to the present invention have been shown in detail and in accordance with the drawings, but this is only described by way of example, and various changes and Change is possible.

10: handle part
20: vertical frame
30: horizontal frame
40: saddle
50: wheel
100: steering device
110: steering shaft
111: upper steering shaft
115: lower steering shaft
116: screw part
120: coupling ring
130: thrust plate
140: Bush
150: steering housing
160: connection frame
161: upper connection frame
162: joint hole
165: lower connection frame
170: anti-rotation key
180: lock nut
190: wheel connection frame
200: power train
210: first shaft
212: snap ring groove
215: pedal connection
216: joint hole
220: first gear
223: joint hole
230: second shaft
232: snap ring groove
239: ball bearing
240: second gear
243: coupling hole
249: ball bearing
250: third shaft
252: snap ring groove
255: connection part
256: joint hole
260: third gear
263: coupling hole
270: chain sprocket
273: joint hole
275: coupling ball
280: sprocket support plate
283: coupling hole
285: joint hole
285: joint hole
290: support plate
293: coupling hole
295: coupling hole
300: body lock device
310: body presser
311: body
312: lower body
313: joint hole
314: side body
315: joint hole
316: connection part
317: coupling hole
320: spring
321: pipe pipe
323: fixed plate
324: joint hole
325: joint hole
326: Bush
340: roller support
342: joint coupling hole
344: roller joiner
345: joint hole
350: roller
352: support shinji pin
354: roller shaft
360: spring
362 bolt
370: lever
371: body
372: joint hole
375: handle part
379: Bush
380: camshaft
381: body
382: connection
383: coupling hole
384: lever connection
385: lower frame connection
388: cam roller
389: roller pin
390: operation frame
391: body
392: stop
393: coupling hole
395: main body side
398: disc spring
399: bolt
400: stand device
410: body coupling member
411: upper body coupling member
412: joint hole
413: lower body coupling member
414: movable protrusion
415: use direction seating groove
416: slope
417: fixing direction seating groove
418: control protrusion
419: coupling hole
420: movable plate
421: body coupling member connection
422: seating protrusion
425: joint hole
427: pipe connection
430: pipe
440: scaffolding
460: spring
470: flat washer
480: Bush
490: bolt
492: nut

Claims (5)

A handle portion 10 formed to adjust the left and right directions of the bicycle; and
A vertical frame 20 and a horizontal frame 30 connected to and combined with the pedal and handle unit 10, the seat frame 40, the power transmission device 200, and the body lock device 300;
a seat frame 40 on which a user can sit;
a pair of wheels 50;
An empty pipe-shaped steering shaft 110 in which an upper steering shaft 111 formed on the upper part coupled to the handle part 10 of a bicycle and a lower steering shaft 115 formed on the lower part fitted and coupled to the steering housing 150 are integrally formed. ) and a pair of disk-shaped coupling rings 120 with an empty center, a pair of thrust plates 130 with an empty center, a pair of cylindrical bushes 140 with an empty center, and the horizontal frame 30 A steering housing 150 formed in a hollow pipe shape having a side portion formed to be formed, an upper connecting frame 161 formed in a cylindrical upper portion having a coupling hole 162 in the center and a pair of coupling holes on the lower surface, A connection frame 160 formed integrally with a lower connection frame 165 formed in a triangular shape at the lower part, an anti-rotation key 170 formed as a rectangular parallelepiped in the shape of a long stick, a lock nut 180, and a bicycle wheel part 50 at the bottom. ) It consists of a pair of wheel connection frames 190 in the shape of an empty pipe having a connection portion connected to the bicycle, and a steering device 100 connected to the handle portion 10 and the wheel 50 of the bicycle; consists of ,
In the steering device 100, the upper steering shaft 111 of the steering shaft 110 is connected to the handle part 10 of the bicycle, and the coupling ring 120 is connected to the lower steering shaft 115 of the steering shaft 110. ) And the thrust plate 130, the upper bush 140, the steering housing 150, the lower bush 140, the thrust plate 130, the coupling hole of the upper connection frame 161 of the connection frame 160 ( 162) is fitted, and an anti-rotation coupling cylinder 164 having anti-rotation key coupling cutouts 164a and 164b is formed at the bottom of the coupling hole 162 of the connection frame 160, and the anti-rotation The anti-rotation key 170 and the lock nut 180 are coupled to the coupling cutout 116a of the threaded portion 116 of the lower steering shaft 115, which is inserted through the coupling cylinder 164, and the connection frame 160 Length characterized in that the coupling cylinder 163a, 163b is formed in the pair of lower connection frames 165, and the pair of wheel connection frames 190 are fitted to the coupling cylinder 163a, 163b An adjustable bike.
A QR clamp tightening head part 111a is formed on the upper coupling part of the upper steering shaft 111 formed on the upper end of the steering shaft 110, and the QR clamp 113 is coupled to the QR clamp tightening head part 111a. A QR clamp tension groove 111b is formed so that it can be tightened, and a handle height adjustment pipe 112 with a pipe rotation prevention groove 112a is inserted on the other side to clamp the QR clamp 113 A QR clamp rotation prevention groove 111c into which the QR clamp rotation prevention key 113c formed inside the QR clamp 113 is inserted is formed, and the handle height adjustment pipe 112 is installed in the QR clamp rotation prevention key 113c. The pipe rotation prevention groove 112a of is coupled at the same time, and the QR clamp 113 is formed with a cylindrical QR clamp holding portion 113a so that the QR clamp tightening head portion 111a can be inserted and fixed. While the QR clamp anti-rotation key 113c is formed inside the cylinder, the QR clamp holding part bolt hole 113d is formed in the center of the QR clamp holding coupling part 113b for tightening the QR clamp tightening head part 111a. In the QR clamp holding part bolt hole 113d, a holding coupling part connection bolt 113g capable of binding the QR clamp 113 is inserted, and one side of the holding coupling part connection bolt 113g is The fastening part fixing nut 113h is fastened, and the QR clamp handle 113e formed with the QR clamp eccentric cam part 113f fastening the QR clamp 113 on one side thereof is fastened by the bolt fastening bar 113i A bicycle capable of adjusting the length, characterized in that.
The power transmission device 200 that transmits the power generated through the pedals of the bicycle is a long cylindrical bar shape with the highest center and formed in multiple stages, with a pair of snap ring grooves 212 formed in the center and both ends. A first shaft 210 having a pedal crank connecting portion 215 having a rectangular shape with a round corner formed with a coupling hole 216;
A disk-shaped first gear 220 having a coupling hole 223 formed in the center and protrusions at equal intervals on the rim;
A second shaft 230 formed in a long cylindrical bar shape having a pair of snap ring grooves 232 formed in the center;
A disk-shaped second gear 240 having a coupling hole 243 formed in the center and protrusions at equal intervals on the rim;
A third shaft 250 having a long cylindrical bar shape, having a pair of snap ring grooves 252 formed in the center and having a connecting portion 255 having a rectangular shape with a coupling hole 256 formed at one end;
A third gear 260 having a disk shape having a coupling hole 263 formed in the center and protrusions at equal intervals on the rim;
A disk-shaped chain sprocket 270 having a rectangular coupling hole 273 formed in the center, a plurality of coupling holes 275 formed in a circular shape around the coupling hole 273, and protrusions at equal intervals on the rim;
A disk-shaped sprocket support plate 280 having a rectangular coupling hole 283 formed in the center and a plurality of coupling holes 285 formed in a circular shape around the coupling hole 283;
A support plate 290 of a circular plate having a circular coupling hole 293 formed in the center and a plurality of coupling holes 295 formed in a circular shape around the coupling hole 293;
A ball bearing 239 fitted to the outside of one side of the second shaft 230 and positioned in the vertical frame 20 of the bicycle;
A ball bearing 249 fitted to the outside of the other side of the second shaft 230 and positioned inside the second gear 240; and
The first gear 220 is coupled between the snap ring grooves 212 of the first shaft 210, and one side portion is fitted and coupled to the vertical frame 20 of the bicycle, and the second shaft 230 After the ball bearing 249 is coupled between the snap ring grooves 232, the second gear 240 is coupled and positioned, and the ball bearing 239 is coupled to one side and then fitted to the vertical frame 20 of the bicycle. The third gear 260 is coupled and positioned between the snap ring grooves 252 of the third shaft 250, and one side portion is fitted and coupled to the vertical frame 20 of the bicycle, and the connection portion 255 on one side is located where the sprocket support plate 280 and the chain sprocket 270 are coupled, and the support plate 290 is located outside the chain sprocket 270 so that the coupling hole 293 of the support plate 290 and the third shaft ( The coupling hole 256 of 250) is coupled through a bolt or the like,
The first gear 220 coupled to the first shaft 210, the second gear 240 coupled to the second shaft 230, and the third gear 260 coupled to the third shaft 250 are engaged and coupled to each other, The chain is coupled to the chain sprocket 270 and the wheel portion 50 of the bicycle, and the power generated through the rotation of the pedal of the bicycle coupled to the pedal crank connection portion 215 of the first shaft 210 Length characterized in that the bicycle is driven by being transmitted to the wheel portion 50 of the bicycle connected to the chain sprocket 270 through the first gear 220, the second gear 240, and the third gear 260 An adjustable bike.
The body lock device 300 for adjusting the length of the bicycle
The lower body having a main body 311 located in the center, a pair of coupling holes 313 formed on the lower side and a pair of coupling holes 315 formed on both sides, and located on the lower side of both sides of the main body 311 ( 312) and a coupling hole 317 in the center, a pair of connection parts 316 formed on both sides, and a pair of side bodies 314 located on both sides of the main body 311 are integrally formed. 310; with
A pair of springs 320 having an elastic force;
A pair of pipe tubes 321 formed in a cylindrical shape;
A pair of fixing plates 323 formed of a rectangular parallelepiped having coupling holes 324 formed on the upper and lower sides and coupling holes 325 formed on the side surfaces;
A pair of roller supports 340 formed in a shape having a connecting hole 342 formed on one side of the upper side, a roller coupling hole 344 formed on the side of the other upper side, and a coupling hole 345 formed on the lower front side. );
A plurality of rollers 350 formed in a disk shape having a coupling hole in the center;
A pair of springs 360 having an elastic force;
a lever 370 integrally formed with a disk-shaped main body 371 having a coupling hole 372 in the center and a long bar-shaped handle portion 375;
A kind of cylindrical main body 381 in which a plurality of connecting parts 382 having a coupling hole 383 in the center are positioned at regular intervals and a lever connecting part having a rectangular shape with rounded corners formed on one side of the main body 381 ( 384), a camshaft 380 integrally formed with a cylindrical vertical frame connecting portion 385 formed on the other side of the main body 381;
A plurality of cam rollers 388 formed in a disk shape having a coupling hole in the center;
roller pin 389;
The main body 391 having a pair of coupling holes 393 on both sides of the upper part and a stopper 392 protruding in the center and the main body side parts 395 formed on both sides of the main body 391 are integrally formed, so that the corner an operating frame 390 formed in a long U-shape with a round and laid down;
It consists of; a plurality of bolts 362 and bolts 399 for coupling.
A pair of roller supports 340 are located between a pair of connection parts 316 formed on the side body 314 of the body presser 310, respectively, and the coupling hole 317 of the connection part 316 and the roller The support pin 352 is coupled to the connecting hole 342 of the support 340, and after the rollers 350 are located on both sides of the roller support 340, the roller coupling hole 344 of the roller support 340 ) and the coupling hole (name name) of the roller 350 through the roller shaft 354, and the coupling hole 315 of the lower body 312 of the body presser 310 and the roller support 340 The spring 360 and the bolt 362 are positioned and coupled to the coupling hole 345 of the body, and the spring 320 and the lower body 312 located below the lower body 312 of the body presser 310 ) of the coupling hole 313 and the pipe pipe 321 fitted to the spring 320, the fixing plate 323 fitted to the lower portion of the pipe pipe 321 through the coupling hole 324, and the fixing plate 323 ) and a bush 326 fitted to the pipe pipe 321 is located at the lower part of the
A plurality of disc springs 398 are located on the lower surface of the main body 391 of the operating frame 390, and a pair of bolts 399 connect the disc spring 398, the operating frame 390, and the bush 326. , The fixed plate 323, the pipe tube 321, the spring 320, and the coupling hole 313 of the lower body 312 of the body presser 310 are fitted and coupled,
A plurality of cam rollers 388 are positioned between the plurality of connecting parts 382 formed on the main body 381 of the camshaft 380, and the coupling holes 383 of the connecting parts 382 and the cam rollers 388 are coupled. The roller pin 389 is coupled to the ball (named name), and after the bush 379 is coupled to the lever connecting portion 384, it is coupled to the main body 371 of the lever 370 and the coupling hole of the lever connecting portion 384 (Name) and the coupling hole 372 of the lever 370 are coupled with a bolt or the like, and the coupled camshaft 380 is located on one side of the stop portion 392 of the operating frame 390 to provide body lock A bicycle capable of adjusting the length, characterized in that the device 300 is formed
The stand device 400 for fixing the bicycle is
Between the upper body coupling member 411 having a plurality of coupling holes 412 located on the upper side and formed in an L-shape bent with a certain angle on the upper side and a pair of inclined surfaces 416 and the inclined surface 416 A plurality of movable protrusions 414 having a fixing direction seating groove 417 formed on one side, a plurality of using direction seating grooves 415, a plurality of fixing direction seating grooves 417, and a plurality of control protrusions 418 A body coupling member 410 in which a lower body coupling member 413 formed at the lower portion in a lying cylindrical shape having a coupling hole 419 formed in the center is alternately positioned and integrally formed;
A movable plate 420 in which a body coupling member connection portion 421 having a seating protrusion 422 formed on one surface and a coupling hole 425 formed in the center and a cylindrical pipe connection portion 427 are integrally formed;
a long cylindrical pipe 430 coupled to the movable plate 420;
Scaffolding 440 coupled to the lower portion of the pipe 430;
a spring 460 having elasticity;
A disk-shaped flat washer 470;
a hollow cylindrical bush 480;
Consisting of a bolt 490 and a nut 492 for coupling
On one side of the lower body coupling member 413, there is a fixing direction seating groove 417, a movable protrusion 414, a use direction seating groove 415, a control protrusion 418, a fixing direction seating groove 417, and a movable The components are located in the order of the possible protrusion 414, the use direction seating groove 415, and the control protrusion 418,
A seating protrusion 422 formed on one side of the movable plate 420 is located on one side of the lower body coupling member 413 of the body coupling member 410 on which the use direction seating groove 415 is formed, and the body coupling A spring 460 is located on the other side of the lower body coupling member 413 of the member 410, a flat washer 470 is placed outside the spring 460, and a nut 492 is placed outside the flat washer 470. is located, the bush 480 is located outside the other side surface of the movable plate 420, the bolt 490 is located outside the bush 480, and the bolt 490 is connected to the bush 480. The coupling hole 425 of the body coupling member connecting portion 421 of the movable plate 420, the coupling hole 419 of the lower body coupling member 413 of the body coupling member 410, and the coupling hole of the spring 460 (name name), it is fitted into the coupling hole (name name) of the flat washer 470 and coupled with the nut 492, and the pipe 430 is fitted and coupled to the pipe connection part 427 of the movable plate 420, , The scaffold 440 is fitted to the lower end of the pipe 430 to form a stand device 400,
The stand device 400 formed in this way is coupled to a bicycle with a bolt or the like through the coupling hole 412 of the upper body coupling member 411 of the body coupling member 410, a length-adjustable bicycle

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