JPH0321579A - folding motorcycle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a foldable motorcycle that can be loaded and transported in a narrow space such as the trunk of a car. Regarding a foldable motorcycle in which a front frame and a rear frame are telescopically fitted, there is a precedent case (Japanese Patent Application No. 1-071439) by the same applicant, which states that the rear frame The rear frame is made up of a combination of pipes or rod-shaped frames, and supports equipment such as the fuel tank and muffler, as well as the power transmission device, and the steps and license plate are also attached to the rear frame.

The fitting and sliding mechanism a between the front frame and the rear frame uses an infinite linear motion guide in which a large number of sliding bodies circulate on the upper and lower surfaces.

Furthermore, in the case of a motorcycle in which the handle post is folded via a link member, a locking mechanism is provided within the handle post so that the handle post can be maintained in a straight line during assembly.

Furthermore, in the case of motorcycles where the handlebar is folded along the handlebar post, the assembled and folded states are restrained and maintained using a clamp lever. Since the rear frame is composed of a combination of rod-shaped frames, the fuel tank is fixedly supported by the rear frame. Scarf. Since the power transmission device and the like are exposed to the outside even if they are inside the assembled rear frame, foreign objects may get in when the device is folded and stored in the trunk of a car.

In order to prevent this, it is necessary to separately cover the sides of the vehicle body with a cover member, which increases the left and right width, and since the rear frame is originally constructed by assembling multiple frame parts, In addition to the large number of parts and the large number of assembly steps, the number of cover parts also increases, reducing work efficiency.

In addition, the steps and license plate attached to the rear frame are exposed to the outside even when folded, so they can get in the way when stored in a car trunk, etc., making it impossible to store them stably or causing them to get caught on objects. There is.

On the other hand, if a motorcycle with a foldable handle post has a locking mechanism inside the handle post,
It is difficult to ensure sufficient lock strength due to space constraints. Furthermore, in the case of conventional motorcycles in which the handlebar is restrained and maintained by a clamp lever, there is no provision to prevent movement of the clamp lever itself to reliably guarantee the tightened state, and the clamp lever may be activated inadvertently.

The present invention has been developed in view of the above, and its purpose is to protect various internal devices by forming the rear frame into a flat plate shape, and to reduce assembly man-hours, as well as to improve the overall performance of the vehicle. To provide a folding motorcycle that can be easily and stably stored in a trunk or the like without fear of equipment damage.

That is, the present invention provides a foldable motorcycle in which a front frame that supports a front wheel and a rear frame that supports a rear wheel are fitted together so as to be telescopic in the front and rear directions, in which the rear frame is formed into a flat plate shape and the left and right side walls of the vehicle body are fitted together. In addition, it is a folding motorcycle in which three points, the front and rear outer portions of the front frame and the rear axle support portion of the rear frame, are configured in substantially the same plane.

Since the rear frame is formed into a flat plate shape and forms the left and right side walls of the vehicle body, various devices supported inside the rear frame can be protected from the outside without requiring a special cover member.

Furthermore, since the rear frame is formed into a flat plate, the number of parts is small and the number of assembly steps is also reduced.

Since the front and rear outer parts of the front frame and the rear axle support part of the rear frame are on substantially the same plane, it is easy to store it in a car trunk or the like by laying it down on its side, and it can be stored in a stable state.

Additionally, the number of parts can be reduced by having the rear frame double as a power transmission case.

By providing a retractable step on the rear frame, the step does not get in the way when stored.

By slidably fitting the front frame to the rear frame via rollers, the structure is simpler and maintenance management is easier than with conventional infinite straight guides, and costs can also be reduced.

By providing a stopper at a predetermined position between the front frame and the rear frame, positioning between the two during assembly can be easily performed.

The present invention also provides a foldable motorcycle in which a front frame that supports a front wheel and a rear frame that supports a rear wheel are fitted together so as to be elastic in the front and back, and a link mechanism is provided between the front frame and the rear frame. This is a folding type motorcycle in which the seat is supported so as to be movable up and down, and the license plate is attached to the link mechanism, and the license plate is stored by the link mechanism that interlocks when folded.

The license plate is stored when folded, so the license plate does not get in the way when stored in the trunk of a car.

Further, the present invention provides a motorcycle in which a handle post is foldably provided via a link member, in which the link member is locked to the vehicle body frame. Since this is a mechanism in which the link member is locked to the vehicle body frame, sufficient locking strength can be ensured.

In addition, the present invention is a foldable two-wheeled vehicle in which the left and right handlebars that extend left and right from a handlebar post swing and fold along the handlebar post, in which the left and right handlebars are restrained and held in a state in which they are extended to the left and right and in a folded state. It includes a clamp lever and a locking mechanism that locks the clamp lever in a restrained state to the handle post.

Since the locking mechanism can lock the clamp lever in the restrained state with respect to the handle post, it is possible to reliably maintain the left and right extended state or folded state of the handle bar.

An embodiment of the present invention illustrated in FIGS. 1 to 26 will be described below.

FIG. 1 is a perspective view of the folding motorcycle l according to the present embodiment when assembled, FIG. 2 is a side view of the same, FIG. 3 is a plan view of the same, and FIG. FIG. 5 is a plan view of the same.

The folding motorcycle 1 includes a body frame including a front frame 2 that supports a steering system including a front wheel FW, and a rear frame 3 that supports a drive system including a rear wheel Rh.

The front frame 2 is equipped with a left and right pair of elongated plate-like members in the front and rear, the front end portions of which are bent slightly upward, the handlebar post 4 passing through between the left and right front ends, and the lower end thereof. The front wheel FW is pivoted on the
is provided.

The rear frame 3 consists of a pair of left and right plate-like members, and constitutes the left and right side walls of the vehicle body, and the upper side portion thereof is the front frame 2.
It is slidably fitted in and extends diagonally rearward from the upper side to cover the shaft of the rear wheel RW and pivotally support the rear wheel R1.

The rear frame 3 suspends a portion of the engine 6 so as to be exposed forward, and various devices are mounted between the left and right plate members.

A seat 8 is provided behind the front frame 2 via a link mechanism 7 so as to be vertically movable.

A license plate 12 is attached to the rear of the link mechanism 7 that supports the seat 8.

A headlight 9 is installed between the left and right front ends of the front frame 2.
However, left and right blinker lamps 10 and a tail lamp 11 are arranged between the left and right rear ends.

Further, a rectangular recess 3a is formed in the plate-like member of the rear frame 3, and a retractable step 13 is vertically attached to the recess 3a, and a stand 14 is pivotally attached to the rear end.

A front wheel cover 107 is fixed to the front fork 20 to cover the upper part of the front wheel FW, and a rear wheel cover 117 is fixed to the rear frame 3 to cover the upper part of the rear wheel curve.

The folding motorcycle l with the above appearance is
A lower shaft 21 protrudes upward from the upper end connecting portion of the left and right front wheels + forks 20, whose handle posts 4 pivotally support the front wheel F1, and is rotatably supported through the front end of the front frame 2. An upper shaft 22 is swingably connected to the upper end of the lower shaft 21 via a pivot, and an upper arm 23 is integrally fixed through the upper shaft 22. Left and right handle par 5
A handle holder 24 that supports the handle holder 24 is provided in series.

An upper arm 23 that can swing integrally with the upper shaft 22 extends rearward, and its rear end and the tip of the rear frame 3 are connected by a joint arm 25 to form a link mechanism.

Therefore, in the handle post 4, the upper shaft 22 and the handle holder 24 in the upper half thereof swing rearward about the pivot together with the upper arm 23 and are folded. The front frame 2 slides rearward with respect to the rear frame 3 to shorten the longitudinal length of the vehicle body.

At the same time, the link mechanism 7 is interlocked with the rearward sliding of the front frame 2, and the seat 8 is also lowered.

Note that the handle par 5, which has its base end pivotally attached to the upper end of the handle holder 24 and projects from left and right, can swing downward and be brought along the handle holder 24.

By storing the step 13 in the recess 3a of the rear frame 3, the folding motorcycle 1 is brought into a folded state (see FIGS. 4 and 5).

As shown in FIGS. 6 and 7, the engine 6 of this motorcycle is moved rearward from a cylinder part 6a to a crankcase 6.
b. It is a power unit type engine in which a transformer 5 and a cushion case 6C are integrally formed, and brackets 6d protruding from the upper and rear lower ends of the engine mount transformer cushion case 6c are connected to the left and right plate-like portions of the rear frame 3. It is fixed to and suspended from a member.

A fuel tank 30 is installed at the center of the upper side of the left and right plate-like members of the rear frame 3, and behind it, the rear frame 3
An oil tank 31 protrudes further rearward and is fixed to the rear frame 3 via a bracket 31a.

A muffler 32 is located obliquely downward between the fuel tank 30 and the oil tank 31, and a bracket 32a protruding from its lower end is fixed to the upper end of the transmission case 6c, so that the muffler 32 is attached to the engine mount. Supported.

Below the fuel tank 30, an air cleaner 33 is fixedly supported by the right side plate member of the rear frame 3. On the left side of the air cleaner 33, a carburetor 34 is fixedly supported by the left side plate member of the rear frame 3.
An intake pipe 29 extending from the engine 6 is connected to an intake port of the engine 6 via a carburetor 34.

A throttle cable 35 extends from the carburetor 34 and is connected to a throttle grip.

A recoil starter handle 15 is provided on the upper part of the crankcase 6b.

The engine 6 has a cylinder portion 6 a and a crank case 6 b exposed forward from the rear frame 3 , and a transmission case 6 c located behind the rear frame 3 .

A drive pulley 36 is fitted to the output shaft protruding from the right side of the transformer tension case 6c, and a belt 38 is stretched between it and a driven pulley 37 fixed to the rear wheel behind it. ing.

All such belt transmission systems are covered by the right side plate member of the rear frame 3.

An exhaust pipe 39 extends from the cylinder portion 6a of the engine 6, extends rearward along the lower surfaces of the crank case 6b and the trans-transition case 6c, and curves upward along the rear surface of the transmission case 6C. It is connected to the muffler 32.

A tail pipe 39a extends downward from the muffler 32.

Most of the drive system equipment mentioned above has a flat rear frame 3 on the left and right sides.
Only the cylinder portion 6as of the engine 6, the crankcase 6b, and the oil tank 31 are exposed from the rear frame 3, of which the oil tank 31 is located between the left and right front frames 2.

Therefore, the rear frame 3 and the front frame 2 can prevent foreign matter from entering various devices and prevent damage.

Further, since the rear frame 3 is a flat plate and can be integrally formed, the number of parts is reduced and the number of assembly steps can be reduced, unlike the conventional method of assembling parts by combining them.

Next, the folding mechanism of the motorcycle 1 is shown in FIGS.
This will be explained based on Figure 0.

FIG. 8 is an exploded perspective view of the main parts.

The front frame 2 consists of a longitudinally elongated member divided into left and right halves, and a semi-cylindrical part 2a is formed inside a slightly upwardly bent part of the front end of the front frame. A head pipe that supports the lower shaft 21 is also formed (see FIGS. 9, 10, and 11).

At the rear ends of the left and right elongated members of the front frame 2, cylindrical portions 2b facing each other and oriented in the horizontal direction are protruded, and the two cylindrical portions 2b are connected to each other. Insert it from the cylindrical female threaded part of the other side and connect it by screwing it, and the front end also has the bolts inserted into the four through holes 2k.
It penetrates through and is connected by screwing with a nut.

Brackets 2C are erected on the upper surfaces of the front ends of the left and right elongated members of the front frame 2 to face each other left and right, and have coaxial through holes 2cj oriented in the left and right horizontal directions at their upper ends.

Also, there is a bracket 2 at a slightly rear position of the same bracket 2C.
d is erected and has a coaxial circular hole 2d" oriented in the left and right horizontal directions at its upper end.

There is a female screw 2l on the outer surface of the front end of the front frame 2.
are formed at four locations, and the frame cover 40 is covered and screwed with bolts B.

The headlight 9 is fitted into the recess 2n formed by the left and right ends 2m of the front frame 2.

The opposing inner surfaces of the left and right elongated members of the front frame 2 are partitioned into front and back by a central partition wall 2e, and a guide groove 2g is formed across the entire vertical width between the front partition wall 2f and the central partition wall 2e. Ribs 2p are formed in the shape of a flat lattice on the inner surface for reinforcement, and two guide grooves 2j are formed by a partition wall 21 which is vertically divided between a central partition wall 2e and a rear partition wall 2h. It is formalized.

Two pivot holes 2q for pivotally supporting the lower end of the link member 82 of the seat 8 are provided at the rear end of the front frame 2, and a mounting hole 2r for the tail lamp 1l is also formed.

On the other hand, the rear frame 3 is constructed by connecting cylindrical parts 3b protruding at several places on the opposing surfaces of a plate-like member divided into left and right parts, and inserting a bolt B into one cylindrical part through a washer W. It is screwed into the female thread formed in the cylindrical part to connect the left and right plate members (see Figs. 12, 13, and 14).

The left and right width of both plate-like members is such that the upper half is the front frame 2.
The lower half portion is on the same plane as the outer width of the front frame 2 (see FIG. 16).

The plate-like member of the rear frame 3, whose inner surface is formed with ribs 3k in a lattice shape for reinforcement, has a shape in which the upper side is shifted forward in the shape of a substantially parallelogram, and the vicinity of the lower side extends rearward. A long hole 3C for supporting the rear axle is formed at the rear end of the extension, and a mounting hole 31 for the stand 14 is provided at the rear of the hole 3C. A rectangular recess 3a for storage is formed.

Also, a fuel cock 30 is located near the front of the upper half of the right side plate member.
A circular hole 3j for a is formed.

The recess 3a is obliquely recessed into a long rectangular shape, and the base end of the step 13 is inserted through a click mechanism into a circular hole 3a'' provided in a slightly recessed portion of the lower end of the inclined side wall behind the recess 3a. The click mechanism consists of a click plate 26, a spring 27, and a steel ball 28, and the click plate 26 is a rectangular flat plate with a circular hole 26a in the center, and is rotated at an angle of 90 degrees from the circular hole 26a. Two grooves 26b are formed at the distance, the click plate 26 is fitted into a further recessed part of the recess 3a on the rear frame 3 side, and the pin P passing through the base end of the step l3 is further inserted into the circle of the click plate 26. Hole 26a
, penetrates through the circular hole 3a'' in the recessed part of the rear frame 3,
A lock pin P° is inserted into a hole penetrating in the diametrical direction at the tip of the pin P protruding through the washer W and locked therein (see FIG. 15).

As shown in FIG. 15, a recess is formed on the surface of the proximal end of the step 13 facing the click plate 26.
A spring 27 is fitted into the recess, and a steel ball 28 is also press-fitted into the recess.
The steel ball 28 is moved on the click plate 26 by the swinging of the step 13, and the steel ball 28 fits into the groove 26b of the click plate 26 when the step 13 is in the horizontal and vertical positions. The step 13 is held in this position, and is also supported by the lower wall of the recess 3a, particularly in the horizontal position.

Therefore, the step 13 has two fixed positions, a horizontally projecting position and a vertically retracted position in the recess 3a by the click mechanism. There isn't.

Note that in the stored state, the tip of the step 13 projects slightly upward from the notch above the recess 3a, and by hooking a foot onto the tip, the step 13 can be raised horizontally.

On the other hand, a circular hole 3d is provided in the lower vicinity of the front edge of the plate-like member of the rear frame 3, and a circular hole 3e is provided in a portion protruding from the front position of the lower edge.
The engine 6 is suspended by a bolt B that passes through both circular holes 3d and 3e via a washer W and is installed between both plate-like members. That is, the engine 6 is suspended by bolts B passing through the bracket 6d protruding from the engine mount, and positioned horizontally by collars 10 placed at predetermined positions.

The center of the upper edge of the plate-like member of the rear frame 3 projects upward, and a circular hole 3f is bored in the upper end.

On the outer surface of the upper side of the plate-shaped member, there are stoppers 4l, 4 on the front and back.
2 is fixed and protrudes outward, the front stopper 41 is slidably fitted into the guide groove 2g provided inside the front frame 2, and the rear stopper 42 is divided into upper and lower parts and is attached to the front frame 2. The guide grooves 2j are respectively slidably fitted into the latter two guide grooves 2j provided on the inner side of the guide grooves 2j.

In the plate member of the rear frame 3, two circular holes 3g are formed vertically along the front edge of the front stopper 41, and one circular hole 3h is formed along the front edge of the rear stopper 42. The above three circular holes 3g, 3h
A pin 43 having a flange is passed through from the inside, and a resin roller 44 is rotatably fitted into the outwardly protruding portion of the pin 43, and is fitted with a washer W and an E ring E.
The pair of upper and lower front rollers 44 fit into the front guide groove 2g formed inside the front frame 2, and
As shown in the cross-sectional view, the upper roller 44 is in contact with the ceiling wall of the guide groove 2g of the front frame 2, and the lower roller 44 is in contact with the bottom wall of the guide groove 2g, both of which are in rolling contact.

On the other hand, the rollers 44 on the 1st and 2nd sides fit into the lower side of the guide groove 2j at the rear of the front frame 2, as shown in FIG. 17, and roll into contact with either the partition wall 21 or the bottom wall of the guide groove. do.

Note that the outer circumferential contact surface of the roller 44 is tapered, and the corresponding upper and lower contact surfaces of the front frame are also inclined to center the rear frame when mated and to prevent lateral play when sliding. is now possible.

In this way, a sliding mechanism between the front frame 2 and the rear frame 3 is constructed, and the front frame 2 can smoothly slide back and forth with respect to the rear frame 3 via the rollers 44.

When the front frame 2 moves forward with respect to the rear frame 3, the front stopper 41 abuts the partition wall 2e and the rear stopper 42 abuts the partition wall 2h, respectively, so that they are stopped.

Since the sliding mechanism is a simple mechanism using rollers, maintenance is easy and can be realized at low cost.

Next, to explain the attachment mechanism of the handle post to the front frame 2, in Fig. 8, a pair of left and right front frames 1 are attached.
- The lower shaft 2I, which projects upward from the center of the upper end connecting part of the front frame 2, has a ball race 45 and a steel ball 46 interposed at the upper and lower ends of a head pipe that is combined in front of the front frame 2. , is inserted into the head vibrator via a bearing section consisting of a cone race 47, and is rotatably supported by fixing the upper bearing section with a nut 48 (see Fig. 18).

A protrusion 21a is formed at the upper end of the lower shaft 21 that penetrates the head pipe from below and protrudes upward.
A through-hole 2lb is bored in the left-right direction in a, and the lower end of the upper shaft 22 is connected to the protrusion 21a.

The upper shaft 22 is bifurcated at its lower end, with a pair of left and right clamping pieces 22a formed therein, and coaxial through-holes 22b formed therein.

The clamping piece 22a of the upper shaft 22 sandwiches the upper end protrusion 21a of the lower shaft 21, and the through hole 21b between the two
, 22b is penetrated by a pin 49, and a circlip C is fitted to the protruding end of the pin 49 via a washer W, and the upper shaft 22 is connected to the lower shaft 21 so as to be swingable about the pin 49. .

The front cylindrical portion 23a of the upper arm 23 is inserted through the upper shaft 22 via a pusher 50 in the upper and lower directions, and the upper arm 23 swings together with the upper shaft 22.

The upper arm 23 has a proximal end portion 23b formed by side walls projecting left and right from the cylindrical portion 23a and a front wall projecting forward, and has an arm portion 23c extending at the rear with a narrower left and right width.

Through holes 2 are provided at the lower ends of the left and right side walls of the base end 23b, respectively.
3d is bored, and the base end 23b of the upper arm 23 is located between the left and right brackets 2c projecting upward at the front end of the front frame 2, and the through hole provided in the bracket 2C and the upper Align the through holes 23d on the arm 23 side and insert the bolts B through collars 10 on the left and right respectively. Penetrates and pivots.

This bolt B and the pin 49 connecting the upper shaft 21 and the upper shaft 22 are coaxial (18th
(see figure), the upper arm 23 and the absorber shaft 22 swing together around the same support shaft.

The rear end of the arm portion 23c of the upper arm 23 extends further rearward on both left and right sides to form a protruding portion 23e, and a through hole 23f is coaxially drilled in the left and right protruding portions 23e. A joint arm 25 is connected to the installation portion 23e.

The joint arm 25 has a long plate shape and has a cylindrical portion 2 at the front and rear ends.
5a and 25b are formed, and the front end is fitted between the left and right protruding parts 23e of the rear end of the upper arm 23, and the front end cylindrical part 25a is aligned with the through hole 23f of the protruding part 23e, and the bolt Bz is inserted through the collar 10. from the left to the right and screw it with a nut N to connect the upper arm 23 and the joint arm 25 so as to be relatively rotatable around the bolt B2 (see Figures 19 and 20). .

The rear end cylindrical portion 25b of the joint arm 25 is coaxially positioned between the left and right cylindrical portions 3b protruding inwardly from the left and right plate-like members at the tip of the rear frame 3, and the bolt B3 is inserted from the left to the right through the collar C. , screw it with a nut, and attach the joint arm 25 to the rear frame 3 with bolt B.
, is attached to the frame so that it can rotate freely around the center.

Therefore, the upper shaft 22 that swings with respect to the lower shaft 21 and the rear frame 3 are connected via the link mechanism consisting of the upper arm 23 and the joint arm 25 as described above.

In FIG. 9, a rectangular recess 23g protrudes from the center of the clay wall of the arm portion 23c of the upper arm 23, and a through hole 23i is formed between the bracket I-23h vertically installed on the left and right sides of the recess 23g and the side wall of the recess 23g. is formed.

And a pair of left and right lock knobs 55 and lock knobs 55
A lock pin 56 protruding outward is loosely fitted into the recess 23g of the upper arm 23 so as to be slidable left and right, and the lock pin 56 protruding outward from the left and right is fitted into the through hole 23 on the side wall of the recess.
i, and the spring 5 is inserted between the left and right lock knobs 55.
7 is interposed so as to urge both lock knobs 55 outwardly to the left and right.

A cover 58 has rectangular holes formed on the left and right sides of the recess 23g.
The upper arm 2 is covered with the cover 58 and the cover 59 is removed.
It is fixed at 3.

The upper half of the lock knob 55 projects upward from the rectangular hole of the cover 58.

The lock knobs 55 are biased by a spring 57 and positioned at appropriate intervals, and at this time, the ends of the lock bins 56 protrude outward from the left and right brackets 23i.

When both lock knobs 55 are grasped by hand and brought close against the spring 57, the end of the lock pin 5G is buried in the through hole 23i of the bracket 23h.

Note that a recess 23h for the combination switch 16 is formed in front of the recess 23g of the upper arm 23.

In the assembled state of the motorcycle (see FIGS. 20 and 21), the arm portion 23c of the upper arm 23 extends rearward in a slightly downward direction, and the joint arm 25 extends further in substantially the same direction. The through hole 23i provided approximately at the center of the arm portion 23c of the upper arm 23 in this position is connected to the circular hole at the end of the bracket 2d which is erected near the front ends of the left and right elongated members of the front frame 2. An end of a lock pin 56 which is coaxially aligned, penetrates through the through hole 23i, and projects outwardly is fitted into a circular hole on the bracket 2d side, fixing the upper arm 23 and locking the link mechanism.

By locking the link mechanism with such a lock mechanism, it is possible to maintain the handle post in a straight line and maintain the extended state of the front frame 2 with respect to the rear frame 3.

Since the link mechanism is fixed to the front frame 2 by the lock pin 56, the locking strength is extremely high, and the strength of the handle post itself can be maintained sufficiently compared to a conventional locking mechanism provided on the handle post.

When folding the motorcycle, grasp the lock knob 55 and bring the left and right sides close together, so that the lock pin 56 is attached to the front frame 2.
The lock is released through the circular hole of the side bracket 2d, and then when the upper shaft 22 is pushed backward, the upper arm 23 moves downward between the plate-like members of the left and right front frames 2, centering on the pin 49 and bolt B1. rocking,
Therefore, since the upper arm 23 is connected to the rear frame 3 by the joint arm 25, as the upper arm 23 moves, the front frame 2 receives a force that causes it to slide rearward relative to the rear frame 3.

Therefore, by folding the upper shaft 22 and pushing the front frame 2 backward, the handle holder 24 becomes parallel to the front frame 2, and the vehicle body is extended from front to back. is shortened.

Note that a cover member l7 is provided behind the left and right brackets 2d of the front frame 2, extending between the two elongated members. 30c is exposed (see Figures 2, 3, and 6), and when folded, the cover member 17 is attached to the fuel cap 30b and the fuel gauge 30c.
It is designed to cover these by sliding above it (fourth
figure. (See Figure 7).

Next, a structure for attaching the handlebar 5 to the handlebar holder 24 connected above the upper shaft 22 will be described with reference to FIGS. 21 to 24.

Figure 2l is an exploded perspective view of the handle holder 2.
4 consists of a head part 24a to which the left and right handlebars 5 are pivotally attached, and a body part 24b which is a cylindrical body with a rectangular cross section extending below the head part 24a. The protruding portion 22d at the upper end of the two is fitted into each other, and the bolt B is tightened to connect and fix the two (see Fig. 18).

The head 24a of the hand holder 24 is formed in the form of a horizontally elongated circular plate, with a pair of left and right cylindrical parts 24c protruding rearward, and a protrusion 24 at a cross position on the front end periphery of the cylindrical part 24c.
d is provided.

On the other hand, the left and right handlebars have a grip 60 at their tips.
is attached, a blinker lamp 11B is attached to the housing at the base thereof (see Fig. 18), a cylindrical portion 5a is provided at the base end, and a flange 5b is formed on the cylindrical portion 5a. The flange 5b has some teeth 5.
c is formed, and the left and right teeth 5c mesh with each other.

Therefore, the left and right handlebars 5 are always swung symmetrically.

A groove 5d is formed on the rear end circumference of the cylindrical portion 5a at a cross position, and corresponds to a protrusion 24d formed on the front surface of the head on the handle holder 24 side, and is arranged to adjust the upright and fallen states of the handlebar 5. Positioning with respect to the state can be performed and fixed by fitting the opposing grooves 5d and protrusions 24d.

From the rear of the head 24a of the handle holder 24, a pair of left and right shafts 61 are passed through the cylindrical portion 24c via washers W and spring washers 62, and from the front, washers W are placed on both shafts 61 in the front and back, respectively, and compression springs are attached. 63, and then fit the base end cylindrical portion 5a of the handle par 5 onto it.

Then, a holder cover 64 is placed to cover the base end cylindrical portions 5a of the left and right handlebars 5 from the front.

The holder cover 64 covers the head 24 of the handle holder 24.
It consists of a horizontally elongated long circular plate part 64a and a side wall 64b provided along the periphery of the circular plate part 64a, and a pair of circular holes 64c are bored on the left and right sides of the long circular plate part 64a. The holder cover 64 is placed over the base end of the handle holder 5 and screwed onto the head 24a of the handle holder 24 with screws 65.

The cylindrical portion 5a of the handle par 5 protrudes forward from the circular hole 64c of the holder cover 64, and the handle par 5 protrudes laterally outward from the notched portion of the side wall 64b of the holder cover 64.

The handlebar 5 has its base end secured to the shaft 61 and can slide back and forth within the holder cover 64. The handlebar 5 is always urged forward by a compression spring 63, and is pushed backward against the compression spring 63. Handle par 5 when sliding
The cylindrical part 5a on the side and the cylindrical part 24 on the handle holder 24 side
c, the front surface contacts, and the groove 5d and the protrusion 24d are fitted.

On the other hand, the shaft 61 is cut out on the left and right sides of its distal end so that the left and right side surfaces are flat, and a through hole 61a is bored through both the flat surfaces.

The tip of the shaft 61 is connected to the holder force bar 64.
It protrudes further forward from the base end cylindrical part 5a of the handle par 5 which protrudes forward from the circular hole 64c, and a clamp lever 70 is connected to the protruding end via a washer W.

The clamp lever 70 has two pairs of left and right brackets 70a formed at its base end.
A through hole 70b is coaxially formed in the hole 70b, and the peripheral edge thereof has a required eccentric cam shape.

Further, the clamp lever 70 has an arm portion 70 from the base end.
c extends, is slightly bent near the tip, and reaches the tip.

The distal ends of the shafts 61 protruding forward from the base end cylindrical portions 5a of the left and right handlebars 5 are connected to the clamp levers 7.
The two pairs of left and right brackets 70a of 0 are sandwiched, the through holes 61a and 70b are aligned, and the pins 71 are passed through from the outside, and the E rings E are fitted into the clamp preppers 7.
0 is pivotally mounted to the left and right shafts 61.

As shown in FIG. 24, when the clamp repper 70 is pivotally attached to the shaft 61, the base end cylindrical portion 5a of the handle par 5 is urged forward by the compression spring 63, and the clamp repper 70 is attached via the washer W. Bracket 70a
is pressed against.

The bracket 70a has a large distance from the pivot pin 71 to the peripheral edge 70a' that abuts the washer W when the arm portion 70c is swinging downward as shown by the solid line, and therefore is pushed backward against the compression spring 63, and the rear end peripheral edge of the cylindrical portion comes into contact with the front surface of the head 24a on the handle holder 24 side, and the respective grooves 5d and protrusions 24d fit together, and the handlebar 5 It is possible to prevent the swinging and fix the

Furthermore, when the arm portion 70c of the clamp lever 70 is swung upward as shown by the chain line in FIG. The base end cylindrical portion 5a of the handle par 5 slides forward and separates from the front surface of the head 24a on the handle holder 24 side.

Therefore, the handlebar 5 can freely swing up and down, allowing it to stand up and fall down.

In addition, in FIG. 23, a cover member 75 having an L-shaped cross section is fixed at its front end to the handle holder head 24a and is provided so as to cover the rear end of the shaft 61 from above and behind. This is to prevent objects from getting caught in the gap created between the handle holder head 24a and the head of the shaft 61.

The tip of the clamp lever 70 is formed into a cylindrical portion 70d having a center axis oriented in the left-right horizontal direction.A spring 72 and a lock pin 73 are fitted into the cylindrical portion 70d, and a lock knob 74 is fitted at one end of the lock pin 73. to screw on.

As shown in FIG. 24, the lock pin 73 has a tip claw portion 73a having an oblique notch, a large diameter portion 73b, and a small diameter portion 73c.
On the other hand, the cylindrical part 70d of the clamp lever 70 has a side wall with a small diameter hole at the right end, and when the small diameter part 73c side of the lock pin 73 is inserted into the cylindrical part 70d from the left side, a spring 72 is inserted, and the spring 72 has a cylindrical portion 70 at one end.
The small diameter portion 73c is in contact with the right side wall of the cylindrical portion 70d, and the other end is in contact with the side surface of the large diameter portion 73b of the clamp lever 70, and the small diameter portion 73c protrudes outward to the right from the small diameter hole in the right side wall of the cylindrical portion 70d.
A lock knob 74 is fitted to the tip.

Therefore, the lock pin 73 is biased leftward by the spring 72, causing the tip claw portion 73a to protrude leftward. However, when the lock knob 74 is pinched and slid to the right against the spring 72, the claw portion 73a Cylindrical part? Submerge in Od.

On the other hand, a rectangular recess 24e is formed in the center of the front wall of the body 24b of the handle holder 24, and the cylindrical portion 70d at the tip of the arm of the clamp lever 70 can fit into the recess 24e. There is.

A cylindrical hole 24f is formed in the left side wall of the recess 24e, into which the tip claw 73a of the spring 72 can be fitted, and a space is provided on the right side of the lock knob 74 for pulling the lock knob 74.

Further, as shown in FIG. 24, the left side wall of the recess 24e is inclined, and the claw portion 73 of the lock pin 73 corresponds to the inclined surface.
A is notched diagonally.

Therefore, when the clamp lever 70 swings downward and the tip end enters the recess 24e, the lock pin 73 moves rightward with the notch surface of the protruding claw 73a touching the inclined left wall surface of the recess 24e. The cylindrical part slides under force?
When the clamp lever 70 is pushed into the cylindrical hole 24f and then reaches the cylindrical hole 24f provided in the side wall surface, the spring 72 protrudes to the left again, and the claw portion 73a fits into the cylindrical hole 24f to be in a locked state, and the clamp lever 70 is moved to the handle. Holder 2
4 to prevent swinging.

When swinging the clamp lever 70 upward, pull the lock knob 74 to the right and the lock pin 73 will engage its claw 73.
Since a is pulled out from the cylindrical hole 24f and the lock is released, it is possible to swing upward as it is.

As described above, the handle par 5 is attached to the handle holder 24 and is equipped with a locking mechanism, and when the handle par 5 is in the upright state, the handle par 5 is attached to the handle holder 24 as shown in FIGS. 1 to 3. It protrudes from the upper end to the left and right, and its base end is pressed against the head 24a of the handle holder 24 by the cam mechanism of the bracket 70a of the clamp lever 70, thereby forming the groove 5d and the protrusion 24d.
The clamp repper 70 itself is locked by the lock mechanism of the lock pin 73.

Since the clamp lever 70 is locked in this state, it will not be inadvertently swung, and the upright state of the handlebar 5 can be ensured.

When folding the handle par 5, pull the lock knob 74 of the locking mechanism to release the lock, and then swing the clamp lever 70 upwards.The cam mechanism of the bracket 70a causes the cylindrical part 5a at one end of the handle par 5 to spring into the compression spring. 63 to slide forward and connect the groove 5d and the protrusion 24.
d is disengaged and the handle par 5 becomes swingable, so it can be folded by swinging downward and along the body 24b of the handle holder 24.

Then, the clamp lever 70 can be swung downward again to fix the base end of the handle lever 5, and by fitting the tip of the clamp lever 70 into the recess 24e, it is automatically locked. 5 folded state can be secured.

Note that when raising the handlebar 5, the reverse operation may be performed.

Next, the link mechanism 7 of the seat 8 will be explained based on FIG. 25.

The seat base 80 is provided with bolts (not shown) protruding from the lower sides of the left and right edges, and a pair of brackets 81 are inserted into the circular holes 8lb of which the bolts pass through and are tightened and fixed with nuts 81. Circular holes 81 provided in three places on the front and back
The upper ends of the three link members 82 are attached to a. The link members 82 each have a pair of left and right legs 82a connected by a connecting rod 82b.
It is secured by an E-ring E.

The circular hole 82C at the lower end of the leg of the front link member 82 is connected to the circular hole 3g provided at the center protrusion of the upper edge of the left and right plate-like members of the rear frame 3 by means of a bolt l-B via a collar C. attached, intermediate and rear link members 8
The circular holes 82c at the lower ends of the two legs are pivotally connected to the two pivot holes 2q at the rear ends of the left and right elongated members of the front frame 2 by bolts B via collars C (Fig. 2,
(See Figures 4, 6, and 7).

Due to this link mechanism, in the assembled state shown in FIGS. 2 and 6, the front frame 2 moves forward with respect to the rear frame 3, so the intermediate and rear link members 8
2 has its lower end approaching the lower end of the front link member 82, and the three link members 82, whose upper end positions are fixed by the brackets 81, stand up and raise the seat 8.

When the front frame 2 slides backward with respect to the rear frame 3 from this state, the intermediate and rear link members 82
The lower ends of the front link members 82 are separated from the lower ends of the front link members 82, so that the three link members 82 can be laid down and the seat 8 can be lowered.

Note that the rear link member 82 is provided with a boss 82cl on the rear surface of the leg portion 82a, and a boss 82cl is provided on the rear surface of the leg portion 82a.
2a with the boss 82d and screw in the bolt B to fix the license plate 12 to the link member 82, so that the license plate 12 can be seen from the rear in an upright position.
When folded, it lies flat and does not get in the way when loaded into the trunk of a car, etc.

Next, the mounting structure of the rear axle and stand 14 is
This will be explained based on FIG.

A long rectangular recess 3h is formed in the front and rear ends of the left and right plate members of the rear frame 3, and a long rectangular hole 3c is also bored in the bottom wall of the recess 3h. A belt adjuster 85 is fitted so as to be slidable back and forth.

The belt adjuster 85 has an L-shaped cross section and is protruded from the front wall of the recess 3h.The tip of the bolt 86 is fitted into the bent wall of the belt adjuster 85 facing the front wall. The longitudinal position of the belt adjuster 85 is adjusted by an adjustment nut 87 that is screwed into the belt adjuster 85.

A rear axle bolt 88 passes through a circular hole bored in the side wall of the left and right belt adjusters 85, is screwed with a nut 89, and is installed between the left and right plate members of the rear frame 3.

A wheel hub 9l is rotatably supported on the rear axle bolt 88 via a bearing 90, and a driven boolean 35 is integrally fixed to the wheel hub 91.

Therefore, by changing the screwing position of the adjustment nut 87, the front and rear positions of the rear wheel RW and the driven pulley 35 can be changed and the tension of the belt can be adjusted.

A base end portion of the stand 14 is pivotally supported by a bolt 95 in a mounting hole 31 at the further rear end of the rear axle bolt 88 which is installed on the plate member of the rear frame 3.
The stand 14 has a U-shape, and the base ends of left and right legs 14a are pivoted to the rear end of the rear frame 3, and the connecting parts form foot parts 14b that move up and down.

A bolt 97 is installed inside the rear end of the left plate-like member of the rear frame 3.
A spring 98 is installed between the exposed portion of the hook 14c and a hook 14c protruding from the inside of the left leg of the stand 14, and the spring 98 can maintain the stand l4 in the upright and fallen states. .

The folding motorcycle 1 of this embodiment is constructed as described above, and in the assembled state, the handle post 4 extends in a straight line as shown in FIGS. 1 to 3, and the front frame 2 is connected to the rear frame 3. The upper arm 23 of the link mechanism is firmly locked against the front frame 2 in the extended state by sliding forward against the handle holder 24.
At the upper end of the handlebar 5, the handlebar 5 protrudes from side to side and is fixed by a clamp lever 70.

Note that the seat 8 is in the raised position, and the step l3 is projected outward from the recess 3a of the rear frame 3.

Therefore, when the user sits on the raised seat 8, the tip grip 60 of the handlebar 5 is at the optimum position for easy operation, and the step 13 is also at the optimum footrest position.

The entire drive system, except for the cylinder section, is covered on the left and right by the plate-like members of the rear frame 3, so foreign objects are prevented from entering.
Damage can be prevented.

When folding, the clamp lever 70 is unlocked and swung upward, the handlebar 5 is swung downward, folded and fixed again with the clamp lever 70, and then the upper arm 23 is supported by the lock knob 55. When the lock pin 56 that is locked to the front frame 2 is removed, the handle holder 24 is pushed backward, and the front frame 2 is pushed backward relative to the rear frame 3, the front frame 2 is smoothly moved backward by the rotation of the roller 44. The handle holder 24 slides to shorten the overall length of the vehicle body, and the handle holder 24 is lowered to a position substantially horizontal to the front frame 2.

Since the seat 8 is lowered in conjunction with this movement, the step 13 is then stored in the recess 3a of the rear frame 3, so that the seat 8 is folded as shown in FIGS. 4 and 5.

Since the clamp lever 70 is attached to the front wall surface of the handle holder 24, when the handle holder 24 is laid down backwards as shown in FIG. The hand holder 24 can be tilted down to a horizontal position close to 1, and the height of the entire vehicle body when folded can be lowered.

In addition, as shown in Fig. 5, the drive system is all mounted on the rear frame 3.
The handlebar 5 folded along the hand holder 24 and its tip grip 60 are all fitted within the left and right width of the front frame 2, and when viewed from above, the entire vehicle body is a substantially long rectangle. This means that there are no unnecessary protruding parts, and the outer surfaces of the front frame and rear frame are flush, making it easy to load it horizontally in the trunk of a car, etc.
And it can be stored stably.

Since the rear frame of the present invention is formed into a flat plate and forms the left and right side walls of the vehicle body, various devices can be housed inside and protected from the outside world without requiring a special cover member.

Since the rear frame is formed into a flat plate, the number of parts is small and the number of assembly steps can be reduced.

Since the front and rear outer parts of the front frame and the rear axle support part of the rear frame are on substantially the same plane, it is easy to store it in a car trunk or the like by laying it down on its side, and it can be stored in a stable state.

Additionally, the number of parts can be reduced by having the rear frame double as a power transmission case.

By providing a retractable step on the rear frame, the step does not get in the way when stored.

By slidably fitting the front frame to the rear frame via rollers, the structure is simpler and maintenance management is easier than with conventional infinite straight guides, and costs can also be reduced.

By providing a stopper at a predetermined position between the front frame and the rear frame, positioning between the two during assembly can be easily performed.

Also, since the license plate is stored when folded, the license plate does not get in the way when stored in the trunk of a car.

Since this is a mechanism in which the link member is locked to the vehicle body frame, sufficient locking strength can be ensured.

Since the clamp lever in the restrained state of the locking mechanism can be locked with respect to the handle post, it is possible to reliably maintain the left and right extended state or folded state of the handlebar.

[Brief explanation of drawings]

Figure 1 is an overall perspective view of a folding motorcycle according to an embodiment of the present invention, Figure 2 is an overall side view of the motorcycle when assembled, Figure 3 is a plan view of the same, and Figure 4 is when it is folded. 5 is a plan view of the same, FIG. 6 is a partially omitted side view showing the internal structure of the motorcycle when assembled, FIG. 7 is a side view of the same when folded, and FIG. 8 is a side view of the same when folded. FIG. 9 is a side view of the front frame, FIG. 10 is a plan view thereof, FIG. 11 is a view taken in the direction of arrow XI in FIG. 9, and FIG. 12 is a side view of the rear frame. Fig. 13 is a plan view of the same, Fig. 14 is a view taken along the
Fig. 7 is a longitudinal sectional rear view of the main part of the sliding fitting part, Fig. 18 is a longitudinal sectional front view of the handle post, Fig. 19 is a plan view showing the link mechanism between the front frame and the rear frame, and Fig. 20
The figure is a side view, Figure 21 is an exploded perspective view showing the handlebar mounting structure, Figure 22 is a front view showing the handlebar mounting structure, Figure 23 is a longitudinal sectional side view, and Figure 24 is a clamp. XXIV-X in Figure 23 showing the lever locking mechanism
25 is an exploded perspective view showing the seat link mechanism, and FIG. 26 is a cross-sectional view of the vicinity of the rear end of the rear frame. ■...Folding motorcycle, 2...Front frame, 3...Rear frame, 4...Handle post, 5...Handlebar, 6...Engine, 7...
Link mechanism, 8... Seat, 9... Headlight,
10... Turn signal lamp, l1... Tail lamp,
12... License plate, l3... Step, l
4...stand, 15...recoil starter handle,
16... Combination switch, 17... Cover part, 20... Front fork, 2l... Lower shaft, 22... Upper shaft, 23... Upper arm, 24... Handle holder, 25...Joint arm, 26...Click plate, 27...
Spring, 28... Steel ball, 30... Fuel tank, 31... Oil tank, 32
...Muffler, 33...Air cleaner, 34...
Carburetor, 35... Throttle cable, 36...
... Drive pulley, 37 ... Driven pulley, 38
...Belt, 39...Exhaust pipe, 40...Frame cover, 41.42...Stopper, 43...Pin, 44...Roller, 45...Ball race, 46...
... Steel ball, 47 ... Corn lace, 48.
...Nut, 49...Pin, 50...Push, 5
5...Lock knob, 56...Lock pin, 57...
・Spring, 58...Cover, 59...Screw, 6
0...Grip, 61...Shaft, 62...Spring washer, 63...Compression spring, 64...
...Holder cover, 65...Screw, 70...Clamp lever, 71...Pin, 72...Spring,
73...Lock pin, 74...Lock knob, 75.
・Cover part, 80 ・Seat base, 81 ・Bracket, 82 ・
...Link member, 85...Chain adjuster, 86...Bolt, 8
7...adjustment nut, 88...rear axle bolt,
89... Nut, 90... Bearing, 9l... Wheel hub, 92... Driven pulley, 95... Bolt, 97... Bolt, 98... Spring, 107... Front wheel cover , 117... Rear wheel cover, 11B... Turn signal lamp.

Claims (1)

[Scope of Claims] 1. A foldable motorcycle in which a front frame that supports a front wheel and a rear frame that supports a rear wheel are fitted in a longitudinally telescopic manner, in which the rear frame is formed into a flat plate, A folding motorcycle characterized in that three points, forming left and right side walls, front and rear outer portions of a front frame, and a rear axle support portion of a rear frame are configured in substantially the same plane. 2. Claim 1, wherein the rear frame is formed also as a power transmission case that houses a power transmission device.
The folding motorcycle described. 3. The foldable motorcycle according to claim 1, wherein a step is housed in the rear frame so as to be freely erectable. 4. The foldable motorcycle according to claim 1, wherein the front frame is slidably fitted to the rear frame via rollers. 5. The foldable motorcycle according to claim 4, wherein a stopper is provided between the front frame and the rear frame. 6. In a folding motorcycle in which a front frame supporting a front wheel and a rear frame supporting a rear wheel are fitted together so as to be elastic in the front and back, a seat is installed between the front frame and the rear frame via a link mechanism. 1. A folding motorcycle characterized in that a license plate is supported to be movable up and down, a license plate is attached to the link mechanism, and the license plate is stored by the link mechanism that interlocks when folded. 7. A foldable motorcycle in which a handle post is foldably provided via a link member, wherein the link member is locked to the vehicle body frame. 8. In a motorcycle in which the left and right handlebars that extend left and right from the handlebars swing and fold along the handlebars, a clamp lever that restrains and holds the handlebars in the left and right extended and folded states, and the restraint state. A folding motorcycle characterized by comprising: a locking mechanism for locking a clamp lever to a handlebar post.