KR20130101609A

KR20130101609A - Apparatus supporting a pair of front wheel of bicycles and motorcycles

Info

Publication number: KR20130101609A
Application number: KR1020120012783A
Authority: KR
Inventors: 이기두
Original assignee: 이기두
Priority date: 2012-02-08
Filing date: 2012-02-08
Publication date: 2013-09-16

Abstract

The present invention is a front wheel support device for a bicycle and a motorcycle provided with a pair of front wheels, to provide a natural steering and stable cushioning action, to provide a front wheel support device for a bicycle that has an effect of reducing the storage space, the body not shown A steering shaft 120 fitted to the front end tube 111 of the steering support 110 coupled to and rotatably supported, and having a lower tube 140 which is a hollow shaft supported in the front-rear direction at the lower end thereof; A handle 600 having a steering wheel 620 and a braking handle 740 is fixed to the upper end of the support 120; and the steering arm rocking shaft 230 is rotatably supported by the lower tube 140 to the left and right directions A steering arm 200 that supports the steering arm shaft 210 that extends in such a way as to rotatably support the rotation ring 410 of the rotation support 400 at both ends of the steering arm shaft 210; and the upper and lower portions of the rotation ring 410. Fixed to the outer surface of the front and front It extends laterally to the rear of the connecting yoke 420 and the rotation ring 410 having a body hub 310 which is perpendicular to the rear to the inner side to avoid collision with the steering arm shaft 210 and the front wheel support 300 And a cantilever beam that can be bent upwards and upwards, a pivot support 400 having a shock absorber 800 and a lower shock absorber 430 capable of supporting the annular shaft; and extending rearwardly integrally with the body hub 310. A front wheel support 300 on which the front wheels 500 are rotatably supported on the hub shaft 350 on the front wheel support base 320; and a pair of front wheels having a brake disc 720 on the front wheel support 300; And a braking device 700 having a brake 710 that operates the brake handle 740 of the handle 600 via the brake cable 730; and the steering shaft 120 And a shock absorber 800 capable of buffering joint motion between the front wheel support 330 and each device connected therebetween. Is composed of
The front wheel support device provided with a pair of front wheels of the present invention allows the viewer or the driver to naturally steer, use the reverse three-wheel and four-wheeled bicycles, and use them for exercise or transportation as a shock absorber. In addition, it is equipped with a function of folding and unfolding can reduce the space occupied when not in use, can be provided with a fork-type steering shaft (120-1), the steering wheel is a fork-type general bicycle equipped with a frame of the present invention It can also be used as a reverse tricycle or motorcycle with a pair of front wheels.

Description

Apparatus supporting a pair of front wheel of bicycles and motorcycles}

The present invention relates to a front wheel support device for a bicycle and a motorcycle having a pair of front wheels, and more particularly, a steering shaft rotatably supported by being inserted into a steering support has a handle as a steering device at the top and a The present invention relates to a front wheel support device for a bicycle and a motorcycle, in which a steering arm and a front wheel support are provided and a pair of front wheels capable of natural steering action of the front wheel.

As is well known, the front wheel support of a conventional bicycle generally supports one wheel in the shape of a fork, but it is necessary to use the bicycle as a means of exercise and a means of movement even by an elderly person, a disabled person, or a weak child such as a young child. In the case of a special purpose bicycle or motorcycle for loading or exercising effect, two front wheels are advantageous in terms of stability, and improvement may be required.

Conventional technologies such as Korean Patent Application No. 10-2009-0008409 and Korean Patent Application No. 10-2009-0085710 provided with two front wheels according to this requirement are so-called tilting structures in which the wheels lie sideways by multiple joints. It's awkward for the driver to be awkward, and it's a structure that looks unstable even when watching a drive.There are a pair of front wheels with a stable posture, such as maintaining a stable posture when the car is steered when steering with two front wheels. It will be necessary to support the front wheels of bicycles and motorcycles.

In order to solve the above problems, the front wheel of the bicycle and the motorcycle is provided with a pair of front wheels naturally made by steering two wheels, and a pair of front wheels of a natural shape is provided even from the driver's own or observer's perspective. To provide a device.

In addition, the present invention is a front wheel of a bicycle and a motorcycle provided with a pair of front wheels that can be configured for exercise and jumping bicycles and motorcycles for smoothly cushioning action for transporting heavy goods or for use for exercise It is to provide a support device.

In addition, the present invention supports the lower end with a hub shaft and a bracket provided in the lower tube of the present invention to the fork-type steering shaft in the bicycle or motorcycle that is conventionally sold and used, the lower end of the rod-shaped shock absorber having an upper support arm in the fork portion When connected to the shock absorber band to provide a function for extending the scope of use of the present invention by enabling the use of a front wheel support device for a bicycle and a motorcycle provided with a pair of front wheels of the present invention.

In addition, the present invention includes a function of reducing the storage place when not in use by providing a function of folding and extending the steering arm of the present invention.

The present invention as a technical concept for achieving the above object is rotatably supported by being inserted into the front end tube of the steering support provided in the body is not shown, the handle is supported on the upper end, and rotates the steering arm swing shaft in the front and rear direction at the lower end A steering shaft having a hollow tube having a lower tube, and a handle shaft fixedly supported at an upper end of the steering shaft and a handle having a braking handle and a shift handle on a handlebar; and rotatably supported by being inserted into the lower tube. A steering arm pivot shaft supports the steering arm shaft in the left and right directions, and a steering arm rotatably supporting the rotation ring of the rotation support at both ends of the steering arm shaft; and is fixed to the rotation ring and extends in both sides to support the body hub of the front wheel support. The connecting yoke rotatably supporting the rear and integrally extending rearward on the rotating ring to A rotation support having a lower buffer support for supporting the device; and a front wheel support having a brake fixing piece for extending the rear wheel so as to rotatably support the front wheel and supporting a brake; and the front wheel support. A front wheel fitted to the hub shaft and rotatably supported; and a braking device including a brake for operating the braking handle provided on the handle via a braking cable; and each device connected between the steering shaft and the front wheel support. Characterized in that it comprises a; shock absorber that can cushion the joint movement.

The steering shaft may be provided in a uniaxial type, may be provided with a general fork-shaped steering shaft, in the case of having a fork-shaped steering shaft by inserting a lower insertion slit or support hole in the bracket and the hub shaft at the top of the lower tube It is characterized in that it is fixed.

According to the present invention, the steering arm has a T-shaped steering arm and a V-shaped steering arm, which are coupled to the lower tube by a T-shape directly or by a frontal tube, to the steering arm oscillation shaft rotatably supported by the steering arm oscillation shaft. It is characterized in that it can be configured as a V-shaped steering arm that is supported by the arm fixing piece fixed to the steering arm oscillation shaft in contact with the rear end and the front end of the lower tube, rotatably supporting the rotation ring at the tip of the steering arm shaft.

Meanwhile, according to the present invention, the steering arm has a rocking shaft protrusion end in which the steering arm rocking shaft is in contact with the front end of the lower tube, and the sliding arm is fitted with the linear slider, the sliding section is restrained by the stopper, and the rear end of the lower tube is closed. The hinge arm is connected to the branch to rotatably support the steering arm axis from side to side, and the steering arm axis is jointly connected to the steering arm axis through the steering arm lever on both sides of the slider so that if the slider slides forward, the steering arm axis is folded. Characterized in that it can be configured as a front wheel support device provided with a pair of front wheels having a function to expand and fold.

In addition, according to the present invention, the steering arm is extended to the rear end of the oscillation shaft protrusion in contact with the rear end of the lower arm of the steering tube to fit the sliding shaft with the linear slider, restrain the sliding section with a stopper, hinged to the slider to connect the steering arm shaft It is rotatably supported from side to side, and the steering arm axis is jointly connected to both sides of the hinge part which has the steering arm swing shaft in contact with the distal end of the lower tube through the steering arm lever so that the slider slides forward. The steering arm shaft is folded, characterized in that it can be configured as a front wheel support device provided with a pair of front wheels having a function of folding and extending.

According to the present invention, the rotation support is supported by the rotating shaft portion of the steering arm shaft by the rotation ring, and support the body hub supporting through the body hub of the front wheel support rotatably in the upper and lower through holes of the front end of the connecting yoke, The body is characterized in that it can have a rod-shaped bumper and heavy tension projection, buffer fixing bolt, annular support hole for supporting one end of the shock absorber.

According to the present invention, the front wheel support penetrates the rear end of the front wheel support from side to side and is provided with a front wheel fixing part and a fixing piece for fixing the rotor-type brakes to fix the hub shaft to a freewheel shaft fixed to the front wheel fixing part. By fixing the front wheel, it is characterized in that it can be provided with a brake on the rotor type brake fixing piece.

Meanwhile, according to the present invention, the front wheel support may have a front wheel support arm to support the front wheels at both ends, and the front wheel support arm may have a V-type brake fixing piece having a V-type brake, and may have a hub constituting the front wheel. It is characterized in that the hub shaft can support both ends.

The front wheel is configured on the hub body, the wheel is formed on the hub on the hub body, the body shaft on the freewheel shaft which is fixed on the front wheel support as a hollow shaft and supported with the bearing, the outer end is inserted through the freewheel shaft The bearing is fixed to the hub shaft by the hub shaft fastener to the front wheel is rotatably supported, characterized in that the rotor fixing portion is provided with a brake rotor inside the hub.

The front wheel support of the hub shaft is provided with an anti-rotation key to support the freewheel shaft, and penetrates the outer end of the freewheel shaft and the hub body and fixes the outer end of the hub body by a hub shaft nut.

When the front wheel support arm is provided, the freewheel shaft is omitted, the hub shaft fixed to the front wheel support is supported by inserting the hub with the rotor type brake fixing piece omitted, the hub shaft nut is supported by the front wheel support arm, and the hub shaft nut It is characterized in that fixed to support.

In addition, according to the present invention, the braking device is connected to a fixed brake of the front wheel support via a cable fixed to one handle of the braking handle on the handle to brake a pair of front wheels. The rotor brake is fixed on the front wheel support arm when the brake brake is fixed to the inside of both front wheels through the brake cable distribution port that separates the brake cable into two rows. The cable fixed to the other side handle may include a braking device provided to brake the rear wheels.

The shock absorber is for buffering the impact force applied to the front wheel, and the shock absorbing action occurs between the steering shaft, the lower shock absorber stage and the front wheel supporter, and has a rod shock absorber, a curved shock absorber, and an axial shock absorber. It is characterized by being able.

On the other hand, the shock absorber is characterized in that when there is an axial shock absorber can support the rod-shaped shock absorber with an upper support arm at the bottom of the axial shock absorber.

In addition, in the present invention, the shock absorber is provided to cushion the impact and vibration applied to the wheel or to support the joint with elastic force to achieve a natural steering, rod-shaped shock absorber can use air, gas or coil spring as a cushioning material. Features,

Meanwhile, in the present invention, the shock absorber further includes a heavy tension shock absorber that exerts a torsional force by bending a rod or plate several times to supplement the buffering action of the rod shock absorber or to cushion the front wheel support in the left and right directions, or the driver. The bicycle or motorcycle to be used when the weight is light, such as a child is characterized in that it can reduce the upper shock absorber to the upper support arm, omit the rod shock absorber and have only a heavy tension shock absorber.

In addition, the shock absorber in the present invention is characterized in that it can be provided with a shock absorber of the curved plate to buffer the joint motion of the front wheel support and the lower buffer and to prevent the torsional force applied to the front wheel support.

On the other hand, the shock absorber according to the present invention is fixed to the lower end of the annular shaft bent round the center of the hub body axis is integrally fixed to the protruding end by inserting the cushioning material to support the lower buffer zone, the end is provided with a stopper, the support hole The protruding end is fixed to the front wheel support, and the annular support is supported on the upper portion of the lower shock absorber buffer to cushion the joint movement of the front wheel support, and at the same time to have an annular buffer that can cushion the torsional load applied to the front wheel support. Can be.

In addition, according to the present invention, the handle and the wheel is characterized in that coupled to the fastener for fast angle adjustment or disassembly assembly.

In the present invention, the tip is described based on the driving direction of the bicycle.

According to the present invention, the steering shaft rotates when the driver turns the handle to the left and right, the steering arm of the front end of the lower tube rotates, the front end of the front wheel support in the rotation direction by the rotation of the steering arm is pushed to the side, the front wheel support The front wheel at the end of is rotated about the contact point with the ground, and the front end of the front wheel support on the opposite side is rotated while being dragged around the contact point with the ground of the front wheel in the direction of rotation, so that the rapid steering and forward movement make the natural steering action of the front wheel If the two wheels move up and down by the unevenness of the ground, the end of the front wheel support swings up and down, and the up and down swing of the shock absorber of the shock absorber is connected to the shock absorber. It is a front wheel support device for a bicycle and a motorcycle provided with a pair of front wheels to cushion the action.

Therefore, the present invention may be provided with a pair of front wheels of a bicycle and a motorcycle to configure a reverse three-wheeled bicycle, a reverse three-wheeled motorcycle, a four-wheeled bicycle, or a four-wheeled motorcycle, and may be used to construct a vehicle-type bicycle.

The steering shaft of the present invention may be constituted by a simple dedicated steering shaft having one shaft, and a pair of front wheels of the present invention below the lower tube and the shock absorber in the fork-type steering arm of a bicycle which is generally sold outside the present invention. By employing the equipped front wheel support device can be configured to use a reverse tricycle or motorcycle.

The steering arm of the present invention is configured by the front wheel support device of the present invention, when the steering arm shaft can be folded and unfolded around the hinge axis of the rear hinge portion when the steering arm is supported by the rear end hinge portion constituting the swing shaft and the slider and the lever. can do.

According to the present invention, the shock absorber can obtain the effect of jumping, so that a jumping bicycle or motorcycle composed of a reverse three-wheel or four-wheel can be used in the configuration.

1 is a bicycle having a pair of front wheels having an upper support 840 according to the present invention supported by a lower shock absorber 430 via a rod shock absorber 810, and having a T-shaped steering arm 210-1. And a perspective view of an embodiment of a front wheel support device for a motorcycle.
2 is a bicycle having a pair of front wheels having an upper support 840 according to the present invention supported by a lower shock absorber 430 via a rod shock absorber 810, and having a T-shaped steering arm 210-1. And perspective view showing an embodiment provided with a front wheel support arm 330 in the front wheel support device of the motorcycle.
3 is an upper support 840 according to the present invention is supported on the lower buffer unit 430 via the rod-shaped shock absorber 810, the steering arm is provided with a pair of front wheels having a V-shaped steering arm (210-2). Perspective view showing an embodiment of a front wheel support device for a bicycle and a motorcycle.
4 is a function of folding and unfolding the front wheel support device of a bicycle and a motorcycle in which the upper support 840 according to the present invention is provided with a pair of front wheels supported by the lower shock absorber 430 via the rod shock absorber 810. A perspective view showing an embodiment having a folding steering arm (200-3) having a.
5 is a bicycle having a pair of front wheels having an upper support 840 according to the present invention supported by a lower shock absorber 430 via a rod shock absorber 811, and having a T-shaped steering arm 210-2. And a perspective view showing an embodiment in which the steering shaft 120 of the front wheel support device of the motorcycle is configured as a fork steering arm 120-1.
Figure 6 is a structural view of the front wheel support device for a bicycle and a motorcycle provided with a pair of front wheels according to the present invention.
7 is a plan view of a front wheel support device for a bicycle and a motorcycle provided with a pair of front wheels according to the present invention.
FIG. 8 omits the device from the steering arm shaft 210 to the front wheel 500 in FIG. 4 of the bicycle and motorcycle front wheel support device provided with the pair of front wheels according to the present invention, and the structure of one side. Exposed partial perspective view.
9 is a folding steering arm 210-3 which operates the slider 236 according to FIG. 4 in front of the lower tube 140 of the bicycle and motorcycle front wheel support device having a pair of front wheels according to the present invention. A structural view showing an embodiment of the plan view.
FIG. 10 illustrates a state in which the steering arm 210-3 of the folding steering arm 210-3, which operates the slider 236 in front of the lower tube 140, is folded in the structural view showing the embodiment of FIG. 4 in a plan view. Structure diagram.
Figure 11 is provided with a front wheel support arm 330 on the front wheel support 300 of the bicycle and motorcycle front wheel support device provided with a pair of front wheels according to the present invention, the slider 236 of the lower tube 140 Figure showing a plan view of an embodiment of the folding steering arm 210-3 operating in the rear.
12 is provided with the front wheel support arm 330 on the front wheel support 300 of the bicycle and motorcycle front wheel support device provided with a pair of front wheels according to the present invention, the slider 236 of the lower tube 140 Structural view showing the folded state of the embodiment of the folding steering arm 210-3 operating in the rear.
FIG. 13 is an exploded view showing components of the embodiment of FIG. 1 of a bicycle and a motorcycle front wheel supporting device having a pair of front wheels according to the present invention; FIG.
14 is an exploded view showing the main parts of the front wheel support 300 and the front wheel 500 provided with the rotor-type brake 711 according to the present invention.
15 is an exploded view showing the main part provided with the front wheel support arm 330 of the front wheel support 300 in FIG.
FIG. 16 is an exploded view illustrating main parts provided in the front wheel support 300 in FIG. 2. FIG.
FIG. 17 is a sectional view showing the main portion of the hub supported by the front wheel support 300 and the front wheel support arm 330 in the embodiment of FIG.
FIG. 18 is an exploded view illustrating main parts of the V-shaped steering arm 200-2 in the embodiment of FIG. 3.
19 is an exploded view showing the main portion of the steering arm (200-3) folded in front of the embodiment of Figures 4 and 9.
20 is an exploded view showing the main portion of the steering arm (200-3) folded back from the embodiment of Figures 4 and 11;

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

As it is well known, the front wheel supporting apparatus of the bicycle and the motorcycle has a general characteristic of symmetry, and unless otherwise described in the following description and illustration, the opposite side is also the same with only one side description and symbol display.

For convenience of understanding, each connecting part may be provided with a bearing or bushing, or a connector and a lubricating oil inlet for lubrication equivalent thereto, for convenience of understanding, and bolts and nuts for fastening parts of the device. Fasteners equivalent to snap rings, fasteners, washers, etc. may be used.

As shown in Figures 1 to 5, the present invention is rotatably supported by the front end tube 111 of the steering support 110 provided in the body not shown, the handle 600 is supported on the top, A steering shaft 120 having a lower tube 140 which is a hollow shaft rotatably having a steering arm oscillation shaft 220 in a front and rear direction at a lower end thereof; and a handle shaft fixed and supported at an upper end of the steering shaft 120 ( 610 and a handle 600 having a braking handle 740 and a shifting handle 640 on the handle bar 620; and a steering arm swing shaft 230 that is inserted into the lower tube 140 and rotatably supported. A steering arm 200 supporting the steering arm shaft 210 in a direction to rotatably support the rotation ring 410 of the pivot support 400 at both ends of the steering arm shaft 210; and integrally on the rotation ring 410 Fixed to the two sides to extend the body hub 310 of the front wheel support 300 so as to rotate about the rear Rotating support 400 having a connecting yoke 420 and the lower shock absorber 430 extending integrally rearward on the rotary ring 410 to support the shock absorber 800; And, the front wheel support 300 A front wheel support 300 extending rearwardly on the body hub 310 of the support body and rotatably supporting the front wheels 500 and having the brake fixing members 314 and 331 supporting the brakes 710; and the A front wheel 500 inserted into the hub shaft 350 on the front wheel support 300 to be rotatably supported; and a brake in which the brake handle 740 provided on the handle 600 operates through the brake cable 730. And a damping device (700) having a 710; and a shock absorber (800) capable of buffering joint motion of each device connected between the steering shaft (120) and the front wheel support (330). .

According to the present invention, as shown in Figures 1 to 5, the steering shaft 120 is fitted with a handle shaft 610 at the top can be fixed by a nut, or fixed by welding or a special fixing device, the tip tube ( 111 may have a protrusion or end supporting the lower tube 140 at the bottom, as shown in FIGS. 1 and 2, as shown in the reinforcing rod 141 or FIG. 5, the bracket 142 and the hub shaft. ((143) is supported on the lower end of the steering shaft 120, and supports the steering arm rocking shaft 230 as a hollow shaft rotatably, the protruding end 233 of the steering arm rocking shaft 230 is a lower tube ( 140 is inserted from the front to come to the front end, and fixed to the rear end to be rotatable, or the protruding end 233 of the steering arm swing shaft 230 is inserted from the rear to come to the rear end of the lower tube 140, the end to be rotatable It can be fixed, the shaft diameter inside the lower tube (140) The raised protruding end is provided at the front end and the rear end so that a bearing or bushing is inserted.

In addition, the steering shaft 120 may be provided as an outer shaft, as shown in the embodiment of Figure 1 to Figure 4, as shown in Figure 5, the lower end of the fork-shaped steering shaft 120-1 of the bicycle or motorcycle The fitting slit 123 or the hub shaft support hole 124 is fixed to both ends of the hub shaft 143 supported by the bracket 142 of the lower tube 140, and the lower support arm 842 on the fork portion 145. ) To support the rod-shaped shock absorber 821, it may be provided with a fork-shaped steering shaft (120-1).

The steering arm 200 according to the present invention, as shown in the embodiment of Figures 1, 2 and 5, T-shaped steering arm swing shaft 230-1 and the T-shaped steering arm shaft 210-1 in the middle portion T 5 in the form of a direct connection, or as shown in Figures 1 and 2, when connected via the front tube 221, which is a hollow connector of the T-shape, T-shaped steering arm (200-1) can be provided. have.

In addition, as shown in the embodiment of FIG. 3 and FIG. 18, the steering arm 200 includes a front fixing piece fitted into the center through hole at the front and rear ends of the V-shaped arm swing shaft 220-2 fitted to the lower tube 140 ( 233a) and the rear fixing piece 233b are fixedly supported, the V-shaped steering arm shaft 210-2 is coupled to the rear fixing piece 233b in a forward V-shape, and the front fixing piece 233a in the middle portion. It is fixed by the L-shaped fixing piece 213 to support, and has a rotary shaft portion (212) for supporting the rotary ring 410 laterally at the tip, the rotary shaft portion of the tip of the V-shaped steering arm shaft (210-2) ( The rotating ring 410 may be supported by the 212, and the V-shaped arm swing shaft 220-2 may be provided with a V-shaped steering arm 200-2 rotatably supported by the swing of the front wheel 500.

In addition, the steering arm 200 according to the present invention, as shown in the embodiment of Figure 4 and Figures 9 to 10 and 19, the folding steering arm shaft (210-3) is provided with a hinge protrusion 211 at the rear end. And a hinge protrusion 211 for supporting the steering arm lever 237 at an intermediate portion thereof, and having a rotating shaft portion 212 supporting the rotation ring 410 laterally at the front end thereof, and folding and extending the steering arm swing shaft ( 230-3 is provided with a protruding end portion 232 in the middle of the shaft, and the rear end of the protruding end portion 232 is a rotating shaft portion 240 which is supported by being inserted into the lower tube 140, and hinge protrusions 211 at both ends at the rear end thereof. The hinge portion 235 is provided, and the front end of the protruding end 232 is a sliding part 239 provided with a key, and the slider 236a provided with the slider fastener 238 is fitted with a stopper 234 at the tip. A bar having a structure for restraining the sliding section, folding and folding the hinge protrusion 211 at the rear end of the folding steering arm shaft 210-3. To the steering arm oscillation shaft 230-3 which hinges to the hinge portion 235 of the rear end of the inclination arm oscillation shaft 230-3 and folds the hinge protrusion 211 of the middle portion of the steering arm shaft 210-3. The slider 236 is hinged through both hinge protrusions on the both sides of the slider 236 and the support lever 237 is supported jointly, and the steering arm shaft 210-3 is folded when the slider 236 is pushed forward, and the slider ( 236 is pulled to the rear, the steering arm shaft (210-3) to expand and expand the slider 236 to secure the slider 236, the front wheel support device of the present invention can be used, the front and rear steering arms (200-3a) can be provided.

On the other hand, the steering arm 200 according to the present invention, as shown in Figures 11 and 12 and 20, when sliding and extending the steering arm swing shaft 210-3 from the rear toward the front, the sliding portion 239 is downward It is provided at the rear of the tube, the slider 236 without the steering lever 237 is inserted into the sliding portion 239 and restrains the sliding section with the stopper 234, the front end of the lower tube with the steering lever 237 Fixed by the hinge portion 235, the hinge protrusion 211 of the rear end of the folding steering shaft (210-3) is hinged to the hinge protrusions of both side ends of the slider 236, provided in the hinge portion 235 A pair of front wheels having a steering arm (200-3b) which is supported by the hinge protrusion (211) of the lower end of the middle of the steering arm shaft (210-3) to fold and fold the steering arm (237-3) so as to be articulated and slid and folded back. A front wheel support device may be provided.

The cross-sectional shape of the sliding part 239 of the steering arm rocking shaft 230-3 is more preferable than a circular shape such as a quadrangle. It is preferable to have a sliding key and a key groove therebetween.

The pivot support 400 according to the present invention, as shown in Figures 1 to 5 and 14, the connecting yoke 420 and the lower portion connected to the rotary ring 410 supported on the rotating shaft portion 212 of the steering arm 200 As the shock absorber band 430 is integrally coupled, the front wheel support 300 is vertically moved by the load applied to the front wheel support 300, and the lower buffer body is formed by the rotation of the rotary ring 410. 430 is capable of interlocking movement in the vertical direction, the shock absorber 800 is inserted into the shock absorbing projections 822, 831 provided in the lower buffer unit 430 acts, the driver is the handle ( When the steering wheel 600 is held, the front wheel support 300 supported by the connecting yoke 420 is rotated by the steering shaft 120 and the steering arm 200 connected from the handle 600 to the body hub shaft 311 in the rotational direction. ) Is pushed and the opposite body shaft hub 311 is attracted, the joint movement is supported, the front wheel 500 is rotated The steering of the front wheel support device of the present invention will be fulfilled.

The rotary ring 410 may be rotatably supported by being fitted with a bushing or a bearing at an end of the steering arm shaft 210.

The connecting yoke 420 is integrally extended to the front and upper and lower portions of the rotary ring 410, the body hub shaft fitted to the hub body 310 by vertically penetrating the yoke portion for supporting the upper and lower of the front wheel support shaft 310 It may have a hole with 311 and a bearing or bushing inside the hole.

The lower buffer unit 430 is integrally extended to the rear of the rotary ring 810, the front wheel support unit 320 and the V-shaped steering arm shaft (200-2) for articulating from side to side, folding steering arm shaft (200-3) It can be bent to the inside and the upper side to avoid the collision, and may have a rod-like bumper 811, the annular shaft support hole 862 on the upper end of the tension, and cushion the tension bumper 822 on the side or bottom A fixing bolt 831 may be provided to support one end of the shock absorber 800.

The front wheel support 300 according to the present invention is fitted in contact with the upper and lower ends of the hub body stand 310 which is a hollow shaft to the connecting yoke 420, as shown in Figures 1 to 4, 13 and 14, The connecting yoke 420 and the hub body shaft shaft 311 which penetrates through the hub body belt 310 are inserted to be fixed to the shaft fixing nut 312 above and below the connection yoke 420 to be rotatably supported. The front wheel support unit 320 integrally fixed to the 310 and extended rearward is provided with a front wheel fixing part 322 penetrating inward and outward at a rear end thereof to contact the inside of the protruding end 348 by inserting a freewheel shaft 340. It may be fixed, and the rotor type brake fixing piece 321 may be provided to fix the rotor type brake 711.

In addition, the front wheel support 300, as shown in Figures 11 and 12 and 15 to 17, having a front wheel support arm 330 can support the outside of the front wheel 500, body hub shaft 311 The clip 331 is inserted into the clip fixing part 311z of the upper and lower extensions of the upper and lower parts, and the front end of the front wheel support arm 330 is inserted into the clip 331 to be fixed and supported by the shaft fixing nut 312. As shown in 17, the hub 512b of the front wheel 500 is inserted into the hub shaft 344, and the collar 353 is fitted to obtain the rear end of the front wheel support arm 330 on the collar and press the hub side clip 337 to press the hub. The side bolts 352 can be tightened and supported.

As shown in FIG. 17, the front wheel support arm 330 has a shape that is bent into a shape along the outer shape of the front wheel 500, can be reinforced with a reinforcing bar 332, and a V-type brake on the front surface of the front wheel 500. V-type brake fixing piece 338 may be provided to have 712.

As shown in FIG. 14, the freewheel shaft 340 is fitted to the front wheel fixing part 322 at the outer side of the front wheel support base 320 so that the freewheel shaft protrusion end 341 is disposed at the outer side of the front wheel support base 320. The inner side can be fixed to the inner side by being screwed or welded, and the inner side can be fixed to the inner side by being fitted to the flange 343, and it is not excluded that the inner and outer sides are fixed by welding. 513 can be inserted and supported in the inner diameter.

In addition, as shown in FIG. 14, the freewheel shaft 340 has a through hole at the rear end of the front wheel support 320 in the front wheel support 300 for supporting the hub body 510 having the rotor-type brake 711. It is fixed to the front wheel fixing portion provided with, the freewheel shaft 340 has an inner end having a body axis 513 of the hub body 510, as shown in Figure 17, the V-type brake 711 The front wheel support 300 having the front wheel support arm 330 provided thereon may omit the freewheel shaft and have a through hole having the hub shaft 350 directly.

The hub shaft 350 is a freewheel shaft 340 provided with a key groove at a protruding end 351 of the inner end of the hub shaft 350 provided with a key so as to be fixed to the freewheel shaft 340 from the inside of the front wheel support 300. The front wheel 500 is rotatably fixed by inserting a bearing at an outer end of the hub body 510 and fixing it with a hub shaft fastener 352.

The front wheel support 300 having the front wheel support arm 330 in which the freewheel shaft 340 can be omitted is provided with a key groove inside the front wheel support stand 320 and the hub shaft 350 is fitted and fixed to the hub. The inner end of the body 510 may be supported.

14, the front wheel 500 according to the present invention is configured on the hub body stand 510, the wheel is configured on the hub 512 on the hub body stand 510, the front wheel support 300 is the front wheel When the front wheel support stand 320 is provided as a single support type that supports the front wheel 500 without the support arm 330, the rotor fixing part 511 in which the brake rotor 720 is fixed to the inner side of the hub 512 is provided. It may be provided, the hub body 510 is a hollow shaft, the body shaft 512 extending inwards subsequent to the rotor fixing portion 322 of the hub body 510 is fitted in the bearing and the freewheel shaft 340 It is inserted into and supported, and the hub shaft 350 is inserted through the freewheel shaft 340 and the hub body stand 510, the bearing is fitted to the hub shaft 350, and the hub fastener 352 can be fixed and rotated. It may be provided with a hub body 510 is provided with a rotor type brake 711 to support it.

On the other hand, when the front wheel 500 is supported from both sides with the front wheel support arm 330, the hub shaft 344 is fixed to the front wheel support stand 320, and the bearings are fitted to both ends of the hub 510b. The bearing fixing cup and collar 336 may be inserted to the outside to be rotatable, and the hub fixing ring 352 may be fixed to and supported by the hub ring 337 of the front wheel support arm 330.

In order to smoothly rotate the front wheel 500, it is preferable to use a bearing or bushing in contact with the inner and outer surfaces of the hub body 510 as a lubrication device.

In addition, according to the present invention, as shown in FIGS. 1 to 4 and 13, the handle shaft 610 is omitted from the top of the steering shaft 120, but is not illustrated. A steering wheel and a gear which can be folded or fixed to the steering shaft 120 by bolts and nuts or welding, and the handle grip 630 of the handle grip 630 on the handlebar 620 on the handle shaft 610. The handle 640 and the braking handle 740 may be provided.

In addition, the handle 600, as shown in Figure 5, other than the present invention downwards the insertion groove or the hub shaft support hole of the lower end of the fork-type steering device (120-1) for supporting the front wheel of a commercially available bike Inserted into and fixed to the fork hub shaft 143 supported by the bracket 142 provided in the tube 140, and fixed to the lower support arm 832 to the fork portion 145 to support the rod-shaped reducer 821 It can be used to replace the steering shaft 120 and the handle 600 of the present invention, and equipped with only the following devices of the steering shaft 120 of the present invention, the front wheel of the bicycle and motorcycle with a pair of front wheels of the present invention The support device can be configured.

In addition, according to the present invention, the braking device 700 is a brake cable 730 fixed to one side of the braking handle 740 in the braking handle 740 is divided into the left and right in the braking cable distribution port 731 front wheel support 300 Bar brake is connected to the brake 710 fixed to the fixed piece 321 of the rotor bar 510 for braking the brake rotor 720 provided in the hub body 510 and directly to the front wheel 500 for braking The V-type brake 712 may be provided, and the brake cable 730 fixed to the other brake handle 740 may be connected to a brake for braking the rear wheel of the body (not shown).

The braking cable distribution port 731 is provided with a half-moon-shaped cable holder 734 at the upper and lower portions of the rod-shaped flow port 752 that can slide up and down inside the distribution pipe case 733 which is a through pipe. The cradle 734 is provided with a groove into which the cable is fitted, and the braking cable 730 descending from the braking handle 740 is mounted on the upper cable cradle 753 to be inserted into the groove and tied to the groove, and the left and right brakes to the lower cable cradle 734 are provided. The braking cable 730 is led out through the hole of the plug with the hose fixing nipple 736 of the upper and lower distribution port case 733 through the cable 730, and the cable hose 735 is connected to the hose of the distribution port case 733. When fixed to the fixed nipple 736 to hold the brake handle 740, the flow port 732 is pulled to the top, the lower braking cable 730 is pulled to the top by the same length to be braked.

According to the present invention, the shock absorber 800, as shown in Figures 1 and 6 to 7, the weight of the driver and the load of the load acting on the body acts heavily, or the front wheel 500 and steering for exercise In case of using a shock absorbing material having a strong resistance in anticipation of a large impact on the shaft 120, or when using a jumping effect, the lower portion or the suspension 851 of the axial shock absorber 820 on the steering shaft 120. As a rod-buffer 811 having a rear end portion of the upper support 840 surrounding the steering shaft 120 and being supported, the rod-buffer 810 supports the upper end of the rod-buffer 810 and lowers the bottom of the pivot support 400. It may be provided with a shock absorber 800 for supporting the lower end of the rod-buffer 810 to the lower buffer unit 430 via the rod support protrusion 811 of the rear end body 430.

At this time, the upper buffer support 840 is preferably provided to support the lower portion of the buffer when there is an axial shock absorber 820.

On the other hand, the shock absorber 800 is provided in the existing fork-type steering shaft 120-1 when using the fork-type steering shaft 120-1 as the steering shaft 120 of the present invention, as shown in FIG. The cushioning material or suspension 851 as the axial buffer 820 of the present invention, omitting the upper buffer support 840, steering shaft 120 or fork-shaped steering shaft 120-1 and the lower buffer stage 830 The rod-shaped shock absorber 811 may be provided to support the rod-shaped shock absorber 810.

According to the present invention, the shock absorbing material of the rod-shaped shock absorber 810 of the shock absorber 800 is preferably air, gas or coil spring type.

In addition, according to the present invention, the shock absorber 800 is provided in the lower portion of the lower tube 140 by providing a bend or bending to act as a rod or plate as shown in Figures 6 and 7 and 13 Heavy tension buffer 820 to support the central fixing portion of the heavy tension shock absorber 820 via the tension buffer 822, and to support the tension buffer 822 on the lower shock absorber 830 on both sides It may be provided. The heavy tension buffer 820 is provided in the T-shaped steering arm (200-1) and V-shaped steering arm (200-2), supplement the buffer effect of the rod-shaped shock absorber (810), or lower buffer arm 842 or upper The lightest front wheel support device may be configured to omit the buffer support 840 and the rod-shaped shock absorber 810.

On the other hand, according to the present invention, the shock absorber 800 is a front wheel support 320 to cushion the joint movement between the front wheel support stand 320 and the lower buffer stand 430, as shown in Figure 7 and 13 And the lower buffer unit 430 may be provided with a side tension buffer 820 by fixing the plate-shaped cushioning material folded several times between the side facing each other with a buffer fixing bolt 831.

On the other hand, according to the present invention, the shock absorber 800, as shown in Figures 9, 11 and 13, the end of the annular shaft 861 is bent roundly around the hub body axis (310) is a support hole projection end 864 is supported by the front wheel support stand 320, the middle portion is inserted into the annular support hole 862 slidingly coupled to the lower buffer stand 430, the end is provided with a support hole stopper 863 at the end , The support hole protruding end 864 is fixed to the front wheel body support 320, the annular support hole 862 having the annular shaft 861 to slide is supported on the upper portion of the lower buffer body 430 to support the front wheel support 300 It may be provided with an annular buffer 820 that can buffer the joint movement of the, and at the same time to buffer the torsional load applied to the front wheel support (300).

In addition, according to the present invention is characterized in that it can be combined with the fastener 242 for the rapid angle adjustment or disassembly and assembly of each part of the frame 100.

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 belong to the claims of the present invention.

110; Steering Support
111; Tip tube
120; Steering shaft
120-1; Fork Steering Shaft
140; Down tube
141; Receptacle
142; Bracket
200; Steering arm
210; Steering arm axis
220; Steering arm pivot
221; Frontal tube
232; Protrusion
233a; Anterior arm fixation
233b; Rear arm fixation
240; Rotating shaft
300; Front wheel support
310; Bodyguard
320; Front wheel support
330; Front wheel support
340: freewheel shaft
341; Freewheel shaft protrusion
343; flange
350; Hub shaft
3400; Pivotal support
410; Rotary ring
420; Connection
430; Lower buffer zone
500; Front wheel
510; Herb
600; handle
610; Handle shaft
620; Handlebar
630; Handle grip
640; Shift handle
700; Braking device
711; Rotor brake
712; V-type brake
720; Brake rotor
730; Braking cable
7740; Braking handle
750; Braking Cable Distribution Port
800; Shock absorber
810; Rod Shock Absorber
820; Heavy tension buffer
820; Axial shock absorber
830; Side tension buffer
841; Upper support arm
851; Suspension
860; Annular buffer

Claims

Hollow body that is rotatably supported by being inserted into the front end tube 111 of the steering support 110 provided in the main body, the handle 600 is supported on the upper end, the hollow having the steering arm oscillation shaft 220 rotatably in the front and rear direction at the lower end. A steering shaft 120 having a lower tube 140 that is an axis; and
A handle 600 having a braking handle 740 and a shifting handle 640 on the handle shaft 610 and the handle bar 620 fixedly supported at the upper end of the steering shaft 120; and
The steering arm oscillation shaft 230, which is inserted into the lower tube 140 and rotatably supported, supports the steering arm shaft 210 in the left and right directions so as to rotate the rotation support ring 410 of the rotation support 400 at both ends of the steering arm shaft 210. Steering arm 200 for rotatably supporting; And
The connecting yoke 420 and the rotary ring 410 are fixed to the rotary ring 410 integrally extending in both sides to rotatably support the body hub 310 of the front wheel support 300 to the rear. Rotating support 400 having a lower buffer unit 430 for supporting the shock absorber 800 is extended integrally to the rear;
Front wheel support having a brake fixing piece (314, 331) for supporting the front wheel 500 rotatably extending to the rear of the body hub 310 of the front wheel support 300 to support the brake 710 ( 300); and
A front wheel 500 inserted into the hub shaft 350 on the front wheel support 300 to be rotatably supported;
Braking device 700 having a brake 710, the brake handle 740 provided on the handle 600 is operated via a brake cable 730; and
Bicycle and motor provided with a pair of front wheels, characterized in that it comprises a; shock absorber 800 for buffering the joint motion of each device connected between the steering shaft 120 and the front wheel support stand 330 Front wheel support of the cycle

The method of claim 1,
The steering shaft 120 is provided with a lower support arm 842 in the middle of the fork part 145 and connected to the lower buffer unit 430 via a rod shock absorber 810, and has a lower tube 140 at the lower end thereof. The front wheel support device for a bicycle and a motorcycle provided with a pair of front wheels, characterized in that it comprises a fork-shaped steering shaft (210-1) is supported via the bracket 142 and the hub shaft (143) provided in the.

The method of claim 1,
The steering arm 200 is inserted so that the swing shaft protrusion end 232 provided in the middle of the steering arm swing shaft 220-1 is supported by the front end of the lower tube 140 to fix the rear end with the swing shaft stopper 234. It is rotatably supported, and is provided with a T-shaped steering arm (200-1) coupled to the center portion of the steering arm shaft (210-1) at the front end to support the rotation ring 411 jointly at both ends. A front wheel support device for a bicycle and a motorcycle provided with a pair of front wheels.

The method of claim 1,
The rear end of the V-shaped steering arm shaft 210-2 is fixed to the rear arm fixing piece 233b fixed to the rear end of the steering arm swing shaft 220-2 at the rear of the lower tube 140, The intermediate portion of the V-shaped steering arm shaft 210-2 is fixed to the front arm fixing piece 233a fixed to the front end of the steering arm oscillating shaft 230-2 at the front end of the lower tube 140, and rotates at both ends. A front wheel support device for a bicycle and a motorcycle provided with a pair of front wheels, characterized in that it comprises a V-shaped steering arm (200-2) for supporting joint movement.

The method of claim 1,
The steering arm 200 is inserted so as to contact the front end of the lower tube 140 as the rotating shaft portion 240 is provided with the swing shaft protrusion end 232 provided in the middle portion of the shaft, and has a rear hinge portion 235 at the rear end The front of the oscillation shaft protrusion 232 is a sliding portion 239, and a slider fastener 238 and a slider 236 having steering levers 237 on both sides thereof are fitted, and the front end thereof is the oscillation shaft stopper 234. A hinged hinge hinge 211 of the rear end is connected to the hinges provided at both ends of the fixed folding arm swing shaft 220-3 and the swing shaft hinge portion 235 of the folding arm swing shaft 220-3. The steering arm pivot shaft 220-3 is hinged and connected by a hinge protrusion 211 provided in the middle portion via the steering lever 237 so as to support joint movement, and the rotary ring 410 at the front end thereof. With a folding arm (200-3) having a folding steering arm shaft (210-3) having a rotating shaft portion 212 to rotatably support the Front wheel support device provided with a pair of front wheels, characterized in that.

The method of claim 1,
The steering arm 200 is inserted into the rear end of the lower tube 140 in contact with the swinging shaft projection end 232 as the rotation axis is provided in front of the swinging shaft projection end 232 provided in the middle of the shaft, the front end of the steering arm on both sides It is rotatably supported as a hinge portion 235 having a lever 237, the rear end of the protruding end 232 is a sliding portion 239, a slider having a fastener 242 and a hinge protrusion 211 on both sides. Inserting (236b), the rear end is a folding steering arm swing shaft (220-3) fixed by the swing shaft stopper (234), and the hinge projection provided in the rear and middle portions of the folding steering arm shaft (210-3) ( 211) hinged rear ends to hinge protrusions 211 provided at both ends of the slider 236b of the folding arm swing shaft 220-3, and hinged to an intermediate portion via the steering lever 237. It is supported by the folding arm arm shaft (220-3) folding and joint movement, the rotation ring 410 can be rotated at the tip Front wheel support device provided with a pair of front wheels, characterized in that it comprises a folding arm (200-3) having a folding steering arm shaft (210-3) having a rotating shaft portion (212) to support.

The method of claim 1,
The pivotal support 400 is extended to the outside on the rotary ring 410 and the rotary ring 410 is provided with a through hole rotatably having a front end of the steering arm shaft 210 in the center, the upper and lower through holes in the tip The connecting yoke 420 supporting the body hub shaft 311 of the front wheel support 300 and the linear hub body 510b, and the lower shock absorber 430 are integrally rearward to the rotary ring 810. It can be provided in a curved form to the inside and upwards by avoiding collision with the front wheel support 320 and the steering arm shaft (210-2, 210-3) extending to the left and right joint movement, one end of the shock absorber 800 Front wheel support device for a bicycle and a motorcycle provided with a pair of front wheels, characterized in that for supporting.

The method of claim 1,
The front wheel support 300 is rotatably fitted to the body hub shaft 311 and the body hub shaft 311 supported by the connecting yoke 420 and the hub body 310 to support the upper and lower ends to the connecting yoke 420 and The front wheel support unit 310 and the front wheel fixing unit 340 having the front wheel fixing unit 340 and the rotor type brake fixing unit 321 which are integrally extended on the hub body unit 310 and penetrate through the end portion thereof. The hub shaft which is inserted from the outside and fixed to contact the protruding end 542, the inner end is fixed to the inner side of the freewheel shaft 340 and the inner side of the freewheel shaft 340 to support the hub body stand 510 of the front wheel 500 Front wheel support device for a bicycle and a motorcycle provided with a pair of front wheels, characterized in that the 350 is provided

The method of claim 1,
The front wheel support 300 is rotatably fitted to the body hub shaft 311 and the body hub shaft 311 supported by the connecting yoke 420, the hub body 310 to support the upper and lower ends to the connecting yoke 420 And the front wheel support base 310 and the body hub having a hub wheel 350 and a front wheel fixing portion 340 to which the hub shaft 350 and the flange 343 are integrally extended to penetrate on the hub body belt 310. A clip 331 is provided on a clip fixing part 311z extending up and down the shaft 311 to fix the front end of the front wheel support arm 330, and the front wheel to the hub side clip 337 provided at the rear end. A front wheel support arm 330 that supports an outer end of the hub shaft 354 rotatably supporting 500 and may include a V-shaft brake fixing piece 338 that supports the V-shaft brake 712 at its distal end. The front wheel support device for a bicycle and a motorcycle provided with a pair of front wheels, characterized in that the provided.

The method of claim 9,
The front wheel support arm 330 rotatably supports the outer hub of the hub shaft 354 to the hub side clip 337 provided at the rear end so as to rotatably support the linear hub body 510b, and the V-shaped brake 712 at the front end thereof. The front wheel support device for a bicycle and a motorcycle provided with a pair of front wheels, characterized in that it can be provided with a V-shape brake support piece (338).

The method of claim 1,
The front wheel 500 has a rotor fixing portion 511 to which the hub 512 and the braking rotor 720 are fixed in succession to the hub 512, and the rotor fixing portion 511 to the inside in succession. The hub body stand 510a, which is a hollow shaft having a body shaft 513 that is inserted into the freewheel shaft 350 provided in the front wheel support 300 and is rotatably supported, is inserted into the hub shaft 350 to be rotatably supported. A front wheel support device for a bicycle and a motorcycle provided with a pair of front wheels.

The method of claim 1,
The front wheel 500 is a hub 512b of the wheel is fitted to the hub shaft 350 is fixed to the front wheel support base 320 is fixed to the front wheel support stand 320 and the front wheel support arm 330 is supported hub The front wheel support device for a bicycle and a motorcycle provided with a pair of front wheels, characterized in that the rotation is supported by the shaft (350).

The method of claim 1,
The shock absorber 800 is characterized in that the upper buffer support 840 fixed on the steering shaft 120 is provided with a rod-shaped shock absorber 811 having a buffer action with the lower shock absorber 430. Bicycle and motorcycle front wheel support device provided with a pair of front wheels.

The method of claim 1,
The shock absorber 800 is a tension shock absorber to obtain elasticity by a rod or plate that is bent several times, and supports the center of the lower tube 140 and a heavy tension shock absorber 820 that supports both ends of the lower shock absorber 430. And a front wheel support device for a bicycle and a motorcycle provided with a pair of front wheels.

The method of claim 1,
The shock absorber 800 is a plate-shaped shock absorber folded several times, one end is fixed to the front wheel support (320) with a buffer fixing bolt 831, the other side is fixed to the lower shock absorber 430 (side tension buffer) 820, the front wheel support device for a bicycle and a motorcycle provided with a pair of front wheels.

The method of claim 1,
The buffer device 800 is bent roundly around the body hub shaft 311 is fitted to the buffer member and fixed to one side of the annular shaft 861 and the annular shaft 861 provided with a stopper 863 at the end. And a support hole protrusion end 864 fixed to the inside of the front wheel support stand 320, and an annular support hole 862 and an annular support hole fitted to the annular shaft 861 and supported at an upper portion of the lower buffer stand 430. The front wheel support device for a bicycle and a motorcycle provided with a pair of front wheels, characterized in that it comprises an annular shock absorber (820) having a cushioning material inserted in front and rear of the (862).

The method of claim 1,
The braking device 700 may introduce a braking cable 732 applied from the braking handle to the upper end of the distribution port case 751 having a flow port 752 that can be slid therein, and a cable hose 731. Hose fixing nipple 754 that can be fixed is provided, the middle portion of the braking cable 732 applied to both brakes (711, 712) is drawn in and drawn out to the other side, the cable hose 731 is fixed Two hose fixing nipples 754 are provided, and the flow port 752 has a braking cable distribution port 750 having a cable cradle 753 having a braking cable 732 fixed to the front and rear ends thereof. A front wheel support device for a bicycle and a motorcycle provided with a pair of front wheels.