WO1987001084A1

WO1987001084A1 - Folding bicycle serving also as cart

Info

Publication number: WO1987001084A1
Application number: PCT/JP1986/000430
Authority: WO
Inventors: Noriaki Kato
Original assignee: Noriaki Kato
Priority date: 1985-08-21
Filing date: 1986-08-21
Publication date: 1987-02-26
Also published as: AU6225886A

Abstract

A folding bicycle serving also as a cart, which can be folded in two at a flectional portion (1) thereof provided at the central part of a frame of the bicycle and which is provided with vertically movable auxiliary wheels (5, 6), a neutral mechanism capable of disconnecting the driving force, and a coupling unit for connecting front and rear wheels (2), (3) to each other. The auxiliary wheels are landed, and a driving unit is set neutral with the front and rear wheels connected laterally to each other, to thereby convert the bicycle into a cart. In order to reconvert this cart into a bicycle, these operations may be reversed.

Description

Specification

Title of the invention Folding bicycle for both cart and cart

"Technical field"

The present invention relates to a folding bicycle (including a motorized bicycle) with three additional elements. The folding bicycle can be converted into a cart, and can be used for other purposes such as travel. It is.

"Background technology"

Conventional carts and folding bicycles include those shown in Fig. 21 (Japanese Patent Publication No. 53-455576) and Fig. 22 (Japanese Utility Model Publication No. 56-30552). The following is a brief description of the conversion method for each.

The one in Fig. 21 is converted into a cart in the following manner.

(a) Bend the two folds of the main frame (main frame) into a U-shape.

(b) Lower the guard wheel.

(c) The front wheel side and the rear wheel side are connected by a shopping basket. -The one in Fig. 22 is converted to a cart as follows.

(a) The two cylinders of the main frame are bent to form a U-shape, and the portion of the connection is the loading platform.

(b) Remove the crank part and the driving force g.

(c) Bend the handle to the desired angle.

(d) Remove the saddle.

(e) The front wheel and the rear wheel are fastened with a simple hook.

Each of these carts also has the following disadvantages. Figure 21 shows

(a) Since the main frame also has two bent parts, not only is it structurally weak as a vehicle, but the conversion operation is also extra and troublesome.

(b) When used as a cart, the pedals and cranks

You can only go in the same direction as the car travels. Therefore, this load The portion to press is planned to be a projection or the like provided on the carrier.

(C) When converting, it is necessary to transfer the luggage, which is troublesome.

Fig. 22

(a) When converting to a cart, the crank, saddle, and drive transmission components must be removed. In other words, the screw must be turned at at least five places where there are bends and removals, which is very time-consuming. Therefore, the same operation must be performed for the reverse conversion, which is difficult.

(b) Since the cart has two wheels, it always needs supporting force, and it is troublesome to let go of it. .

(c) It is troublesome to transfer luggage during the conversion.

As described above, these carts and folding bikes were not very practical in terms of structure, function, and operation. The present invention not only solves the above-mentioned problems but also provides a versatile cart / foldable self-fe vehicle that has all the advantages listed below. Aim.

(a) It requires tools and can be converted by simple operations. -

(b) The conversion does not require the transfer of luggage.

(c) The handle of the bicycle must also be the pusher of the cart.

(d) The cart should be stable.

(e) It should be small and can be folded and brought in for carrying or storing in sandwiched places such as inside a bus car.

(f). Can be used for other purposes such as baby carts and shopping power. 'Disclosure of the invention'

The folding bicycle which is also used as a cart according to the present invention is a folding bicycle which can be folded into two around a bent portion (1) at the center of a vehicle body, and is used for many purposes by providing the following three elements. It can be converted into a cart that can be made.

(a) An auxiliary wheel or two rear wheels are provided so that three or more wheels can form a cart. (b) It has a neutral mechanism that cuts off the driving force.

(c) A connecting device is provided so that the front wheel side and the rear wheel side are connected when converting to a cart.

As mentioned above, the handle part and the saddle part can be bent or expanded and contracted, and the wheels are preferably small (30 to 35 cm). Next, each of the catching wheels, the neutral mechanism, and the connecting device will be described in detail.

(a) About the support wheel

Regarding the arrangement of the front wheel (2), rear wheel (3), and Urasuke leg wheel (4) in the wagon, schematic diagrams of the main ones are shown in Figs.

Fig. 3 shows a case in which one catching wheel (4) is set up and down near the bend (1) and the front wheel (2) and the rear wheel (3) are arranged in parallel.

Fig. 4 shows that the front wheel (2) and the catching wheel (4) are installed at a position forming a triangle with the rear wheel (3) as the point, and the auxiliary wheel (4) can be lowered. It was done. In FIG. 5, the front wheel (2) and the rear wheel (3) are placed in one row, and the Urasuke leg wheel (4) is provided below the frame (10).

Fig. 6 shows the best: The front wheel (2), the rear wheel (3), and the second Ura (6) (5) died near the curved part (1).

On the 71st, the front wheels (2) and the rear wheels (3) are aligned in a row,

) (4) is provided on a tripod of the camera. (See No. 13)

Fig. 8 shows the case where the rear wheels (3) and (3) are arranged in parallel and the auxiliary wheels are not provided.

Fig. 9 is based on the one shown in Fig. 3, but with a pair of Ura assistant wheels (4) and (4) on the stand (11).

Next, how to attach the catching wheel will be described with reference to FIGS.

Fig. 10 shows the mounting method according to one stand. In a known single stand, two notches (13) and two locking claws (14) are provided symmetrically, and an auxiliary wheel (38) is provided at the lower end. - When used as a cart and when riding a bicycle, the catching wheel (4) is locked and fixed.

Fig. 11 shows a modification of the aircraft landing gear. The link is used to raise and lower the support cuff (4). The catch 输 (4) is urged upward by an elastic body such as a spring, and when the catch 输 (4) is lowered, the joints (66 :) of Juliestra and Soto (65) are opened. Checked.

In addition to this, there are conceivable mounting methods according to various types of aircraft landing gear.

Fig. 12 shows a mutatis mutandis application of the coupling device used for automobile seat belts and the like. The female member (9) is fixed to the vehicle body, and the auxiliary leg (4) provided with the male member (8) is made detachable.

Fig. 13 shows a method based on a camera tripod. A pair of Urasuke wheels (4) and (4) land or open as the sliding barrel (15) slides. Each connection is attached.

Next, Medium 3: Mechanism will be described. ..

Figures 14 to 15 are of the clutch type. The part that transmits the driving force from the chain (or belt) is separated into a gear part (17) and a ratchet built-in part (# 8). The gear part (17) is composed of a rotating part U9) and a sliding part (20).鋸: Serrations (2 I) are engraved on the outer periphery of the portion (I 7) and the ratchet built-in portion (18), respectively, and the driving force is transmitted by meshing them. At the boundary between the rotating part (19) and the sliding part (20), the rotating part (19) is rotatable via a ball bearing or a bearing (22) corresponding thereto. . The center of the sliding portion (20) is penetrated by the vehicle (23), and the sliding portion (2 • 0) slides right and left over the center. A tension body (24) is provided at the center of the wheel (23). Therefore, the sliding part (20) is always pressed in the direction of ratchet ': / (67) by an elastic body such as a spring (25). Move in the opposite direction on the axis.

Fig. 16 is based on the derailment type of the chain. A disk-like member (28) of approximately the same size as that of the small gear (27) is provided next to the chain, and the chain Is a method of derailing. The disk-shaped member (28) and the large gear side are provided with a conventional derailment preventive device (29). (See Figure 17). In the case of this folding bike that also serves as a cart, it is better to remove the chain (30) by turning the pedal (34) and the crank (35) backward, even when the bicycle is stationary or retreating. There are advantages that can be done. Also, this cart is a small wheel, so it cannot be used with the usual derailleur mounting method. Therefore, a description will be given of a slightly modified mounting method of a common derailleur. That is, the parallelogram (3 1) is attached horizontally along the rear fork (3 2), and the two micro gears (3 3) (3 3) are urged counterclockwise by a spring or the like. . The axis of rotation between the two micro gears (33) (33) is closer to the upper micro gear (33), increasing the position of the lower micro gear (33). Therefore, the derailleur is actuated by the action of the wire (26), and the micro gear (33) moves left and right. In this state, if the pedal (34) and the crank (35) are moved backward, the chain (30) can be freely attached and detached. In addition, it is not necessary to have the upper microcar (33). In this case, a frame member (36) having an action of pressing the chain (30) right and left is necessary.

In order to provide the middle i state, a known method for blocking the action of the lattice may be used in addition to h.

For those with an internal transmission, the clutch mechanism inside the hub body may be provided with a disconnection state by pulling the body. In addition, in the pedal and crank parts, It is also conceivable to empty or remove the crank, that is, when using a cart, a small hole penetrating the left crank and the crank 結合 is required at the joint between the left crank and crank の, since it is sufficient to use only the left crank idle. It is also possible to perform idling action and removal by pulling out a small stick that fits there.

The connecting tool will be described.

When converting to a cart, the connecting device (7) for connecting the front wheel (2) and the rear wheel (3) may be a device that uses the connecting device used for seat belts of automobiles, etc. May be the same. Other bending devices for folding bicycles are also available ^ ― ―

Can be applied mutatis mutandis.

As described above, various shapes are conceivable for the “three elements”, but the appropriate combination of these can be applied as a cart / foldable bicycle.

With the above structure, the following three operations can be performed to convert a bicycle into a cart.

(a) Land the catching wheels.

(b) Maintain the driving force in a neutral state.

(c) Connect the front wheel side and the rear wheel side.

Also, when converting from a cart to a bicycle, these three operations may be performed in reverse.

The effects of the present invention will be listed below.

(a) When converting from a bicycle to a cart (cart to bicycle), there is no need to transfer the luggage.

Cb) When converted to a cart, the bicycle handle can be used as a cart handle without any operation.

(c) It can be converted by simple operation without tools.

(d) M: (Three or more wheels keep stability.

Ce) Compact and foldable, so it can be carried around for travel.

Cd) Baby carts, shopping carts, instant stools, and multi-use.

—Best mode for carrying out the invention

In the wagon-riding folding bicycle of the embodiment, the distance from the bent portion (1) at the center of the vehicle to the front wheel (2) and the distance from the bent portion (1) to the rear wheel (3) are almost the same. The number of folding desks is equal. The handle and saddle can bend or expand and contract, respectively, and the wheels are small (about 30-35 cm). '

In the following, the Urasuke wheel, the neutral mechanism, the coupling, and the interlocking type are explained.

Two catching wheels are provided, and the first Ura supporting wheel (5) is located below the hanger (69).

BAD ORIGINAL Then, it is attached as shown in FIG. That is, an elastic body such as a spring is provided in the attachment portion (16), and the first catching wheel (5) is constantly urged upward. A small chain (39) is connected to the auxiliary wheel (38), and the first auxiliary wheel (5) moves up and down by the pulling force of the small chain (39). The small chain (39) is connected to a rod-like projection (40) provided on the lower side of the first catching wheel (5). Immediately above the catching wheel (3 8), a member (4 1) for hooking the cart is provided. When the cart is in use, it is used as a footrest to hold the first catching wheel (5) as a fulcrum for the chicory and to lift the luggage side with the foot. The Urasuke wheel (38) of the No. 1 Urasuke wheel (5) can swing right and left.

The second auxiliary leg (6) conforms to a single stand, as described in FIG. 10, and is provided on the rear wheel 轴 (42). Therefore, when used as a bicycle, the No. 2 Ura assisting wheel (6) is held in a state of being lifted upward and rearward behind the rear wheel (3), and when used as a cart, the stopper (43) must be After the second catcher landing gear (6) lands, push the stopper (43) and lock it. As a result, the second catching wheel (6) is fixed while landing. If the reverse operation is performed, the rear wheel (3) will go up rearward and be held.

In the middle structure, the clutch-type structure described in j in the previous disclosure of the invention (refer to No. 1415 I) should be provided. Then, in order to link the operation ffl of this clutch with the operation of the bending portion (1), the other end of the wire (26) connected to the clutch is connected to the conical portion. It is connected to the lower end of the bent portion (45) of (44). In this case, the end of the wire (26) is connected to the bent portion (45) via a chain-like material such as a chain.

The connecting device is provided with the seat belt type connecting device (7) as in the opening of the invention. That is, since the female part ^ (9) is fixed to the catching fork (4 6) and the male member (8) is fixed to the front fork (4 7), the handle (64) It can be locked automatically while holding. In addition, as shown in Fig. 20, each of the operating parts of the rear brake (48) and the female member (9) is used to automatically release the lock while holding the handle (64). With wire (26) B ^{AD 0R, G, NAL} Has continued. Therefore, the opening of the connecting member (7) is released by the operation of the rear brake (48). Note that the male member (8) and the female member (9) may be replaced with the opposite positions. In this case, the lock is released by interlocking the female member (9) with the operating part of the front brake.

As shown in FIG. 18, the bent portion (1) is provided with a hinge-shaped member (44). The rod (50) penetrating the opening / closing part (49) on the right side of the hinge member (44) can be freely inserted and removed in the up and down direction, so that the bent part (1) can be freely opened and closed. Has become. A pipe (5 1) is juxtaposed to a side of the opening / closing section (49), into which a rod-shaped member (52) is vertically slidably fitted. The lower end of the rod-shaped member (52) is connected to the spring (25), the panel (25) is further connected to the small chain (54), and the small chain (54) is connected to the first uranium. It is connected to an auxiliary wheel (5). At the upper end of the pipe (51), a holding member (55) of a rod (50) is fixedly mounted so as to hold the rod (50) at the position of the ヒ end. The rod (50.) and the rod-shaped part (52) are connected together at the end of the bar to form a single body. The effect is that they move at the same time. Furthermore, since the rod-shaped part (52) is more connected than the rod-shaped rod (50), when the ^ -shaped part (52) is pulled, the rod- (50) is [: shifted at the end, approx. By 60 degrees lfe, the rod (5 0): The holding part. It is kept at the age of 55 (5). In the second case, the 1st auxiliary wheel (5) is linked to .ft. You. Therefore, if the reverse operation is performed, the bent portion (1) is connected, and at the time, the second auxiliary leg (5);

A projection (56) is provided at the upper end of the holding member (55) and the opening / closing part (49) to prevent the twist of the handle (57). The central portion upper end of al _fc 0 Tsugai section讨(4 4) ^ Part frame (1 0) and 5: a pipe (5 8) and拮department Ura strong pipes (5 9) is passed sieved swash th ing. A forcing pipe (59) is also wrapped around the pipe (51) and the rear hawk (32). The lower end of the pipe (51) has a donut shape (60) to further improve the slide of the small chain (39).

0 O lGi Ai

— With the above configuration, to convert from a bicycle to a cart,

(a) Pull up the handle (57) of the bent part (1) and turn it clockwise about 60 degrees upward. As a result, the bent portion (1) is in a state where it can be bent, and the first urinary support wheel (5) lands and is fixed.

(b) Standing on the right side of the bicycle, holding the handle, tilting the body a little toward the body, turning the front wheel slightly above the ground, turning counterclockwise, and connecting the connecting device (7). This operation requires almost no force because the first auxiliary landing gear (5) has landed. The neutral mechanism is also linked by the bending action of the bending part (1), so that the cart can be completed immediately and pushed as it is. In case of doubt of luggage, the cart in this state has sufficient stability without having to drop down the No. 2 Ura assistant wheel (6). If the cart requires safety, use the second catching wheel.

To convert from a cart to a bicycle, perform the reverse operation. First, pull the left brake lever (rear brake ( ₄ 8)) to release the connecting port opening, and then operate.

That's Iwao! In this case, the center line connecting the steering wheel post (37) and the wheel (2) is inclined when converted to a cart. Therefore, if this is straightened, the rear wheel (3) will be floating on the ground. In this state, if the second auxiliary wheel (6) is provided so as to rest on the ground, the two mechanisms can generate unnecessary load. There are drawbacks such as the tilt of the w table.

The present invention can be applied to a motorbike, a motorcycle table such as a fold-fold type motorcycle, a motorcycle, a scooter and the like. These already have a neutral mechanism, so it is only necessary to provide Urasuke leg 输 and couplings.

—Brief description of the drawings ”

FIG. 1 is a side view of a cart according to a preferred embodiment of the present invention.

Fig. 2 is the plan view

Figs. 3 to 9, schematic plan view of cart

^ Fig. 10 is a side view of a single stand type auxiliary wheel.

Fig. 11 is a side view of an aircraft landing gear type catching wheel

Fig. 12 is a perspective view of a seat belt type catching wheel.

Fig. 13 is a perspective view of the camera's tripod-type catching wheel.

Fig. 14 is a sectional view of the latch.

Fig. 15 is a front view of the gear section (17)

Fig. 16 is a front view of the chain derailer.

Fig. 17 is a side view of the disk-shaped member (28)

Fig. 18 is a perspective view of the bent part (1).

Fig. 19 is the front view

Fig. 20 is a perspective view of the connecting device.

Fig. 2 is a perspective view of Japanese Patent Publication No. 53-45-57576. Fig. 22 is a perspective view of Japanese Utility Model Publication No. 56-30555.

(I): Bend (2) · ^ Wheel (3)… Back 输… Auxiliary leg (· δ ·)… First Ura auxiliary leg (6)… Second Ura auxiliary leg ( 7) ... (8 male 1 = age (9) ... female member (10) ... front frame (1 1) ... stand (1 2)-1 'stand (1 3) … Notched groove (1 4 -.Gourd (I 5) ー ¾

6)-¾ (I 7 (18)… ratchet Λ (I 9)… (20)… sliding part (2 1)… ^-(2 2)… bearing (2 3)… Car sleeve (24)… Tension body (2 5)… Spring (2 6)… Wire (2

7) Small gear (28) Disc-shaped part (29) Derailment prevention ihU C30) Chain (3 1) ... ^ Row quadrilateral (3 2) ... Rear hawk (3 3)-^ Small Four(

(34)… Pedal (3 5) ··· Crank (3 6) —Part number (3 7)… Handle post (3 8)… Caster (3 9)… Small chain (40)… Bar-shaped projection Object (4 1)… Member for foot rest 2)… Rear wheel 铀 (4 3)… Stopper (44)… Lt depressed member (4 5)… Bend 铀 (4 6)… Auxiliary fork (4 7) ··· Front fork (4 8) ··· Rear brake (4 9) ··· Opening / closing part (50) ··· Rod (5 1) ··· Pipe (5 2) ··· Bar-shaped member (54) ··· Small chain

--m (5 5) ... Holding member (5 6) ... Protrusion (5 7) ... Handle (5 8) ... Standing pipe (59) ... Captive pipe (60) ... Donut shape (61) ... Luggage carrier (62) Luggage (63) Saddle (64) Handle (65) Jurys flat (66) Joint (67) Ratchet (68) )… Ball catch (6 9)… Hanger part

Claims

The scope of the claims

A folding bicycle that can be folded into two around the bent portion (1) at the center of the vehicle body, characterized in that it can be converted into a cart by providing the following elements. folding bicycle.

(a) An auxiliary leg 输 (4) or two rear wheels are provided so that three or more wheels can form a cart.

H) It has a neutral mechanism that cuts off the driving force.

(c) A coupling (7) is provided so that the front wheel side and the rear wheel side are connected when converting to a cart.

New paper