JPS6232B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a parking lock device used in a rocking type tricycle that swings between a front body and a rear body, and in particular, the present invention relates to a parking lock device for use in a rocking tricycle that swings between a front body and a rear body. The oscillating lock mechanism is locked by oscillating in the direction of oscillation, and the locking mechanism of the wheel drive shaft system is locked by cable pulling motion, and the oscillating lock and wheel lock are input to the operating system using one operating system. This invention relates to a parking lock device that efficiently utilizes input without changing direction.

The applicant previously proposed a rolling tricycle that is equipped with one front wheel and two rear wheels, the front body of which is swingable relative to the rear body, and which is driven by a prime mover.

When parking such a swinging tricycle, it is desirable to have both a lock that prevents the rear wheels from rolling and a lock that prevents the front vehicle body from swinging from side to side. By the way, the rear wheels are locked by braking, etc., and the swing lock requires restraining the rotation of the support shaft of the front body toward the rear body, so the respective lock operation input systems are in completely different directions. However, if each operation is performed separately, the operations will be duplicated, which is troublesome and complicated, and there is a risk of forgetting one operation.

Therefore, it is desirable to operate each lock mechanism with a single system of operation input, but since each input direction is different in this case, a motion conversion mechanism is required for the tension caused by the cable, for example, and the operation load becomes large. This may lead to uncertainty in the operation of the lock mechanism. In addition to the above, if you try to operate both with one system of input, both lock mechanisms must be operated at the same time.
Both must be operated accurately and reliably.

The present invention has been made in response to the above-mentioned demands for a parking lock for a rocking tricycle, and its purpose is to provide an operating cable that is tensioned and relaxed in the length direction, and that the cable has an operating cable at one end. The other end is connected to a lock operator of a lock mechanism that prevents the rear wheel from rolling when the cable is pulled, and the middle part of the cable is connected to a lock mechanism that detects the tension and relaxation of the rear wheel. The operating element is connected to an operating element of a swinging lock mechanism that swings in a direction perpendicular to the direction of movement of the cable, and the operating element has one end engaged with the cable and the other end engaged with an intermediate transmission member of the swinging lock mechanism. In this way, the input direction of the input system can be easily changed in the middle to reliably operate the swing lock mechanism, and the wheel lock and swing lock can be reliably performed with a small operating load, improving operability and locking. An object of the present invention is to provide a parking lock device for a tricycle whose mechanism is simplified.

Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. This will reveal further objects and advantages of the invention.

FIG. 1 shows a schematic side view of a tricycle 1. The tricycle 1 has a body divided into a front body 2 and a rear body 3, and a single steering wheel is formed at the front of the front body 2 via a front fork 4. It has a front wheel 5, a front fork 4 extending upward and a handle 6 at its upper end,
In addition, a headlight unit 7 is attached to the middle part of the handlebar 6, and a seat post 8 is provided upwardly at the rear of the front body 2, and a seat 9 is attached to the upper end of the seat post 8.
is provided. An engine 11 is mounted on a rear frame 10 that forms the main part of the rear vehicle body 3, and two rear wheels 13, which are driving wheels, are arranged on the left and right sides of a transmission case 12 that is connected to the engine 11 and extends rearward. The engine 11 and case 12 are covered with a cover 14.

A joint 15 is pivotally attached to the rear lower part of the front vehicle body 2 by a pin 16 via a boss portion 15a at the front end, so that the joint 15 swings or swings in the vertical direction using the pin 16 as a fulcrum. The lower end of the cushion unit 17 is pivotally connected to the boss portion 15b protruding upward from the rear, and the unit 17
The upper end of the seat post 8 is pivotally connected to the middle portion of the seat post 8 of the front vehicle body 2. The joint 15 is provided with a support shaft 18 that tilts rearward and downward in the front-rear direction, and is pivotally connected to the rear frame 10 by the support shaft 18 so as to be able to rotate left and right about the shaft as a fulcrum, that is, swing (roll). Joint 1
Although not shown in the drawings, a Neidhardt damper or the like is provided on the 5 side to moderate the rotation of the support shaft 18.

Reference numeral 19 denotes a lock operation lever, which is provided below the center of the handle 6 in the embodiment, and the raised position shown by the solid line in the figure is the parking lock state, and the fallen position parallel to the front fork 4 shown by the imaginary line is the released state. The base end of the lever 19 is connected to the operation cable 2.
Therefore, by raising the lever 19 as shown in the figure, the cable inner 20a is pulled. cable 20
is the front fork upper part 4a, the front post part 2
a, extends toward the rear wheel 13 along the floor 2b, along the joint 15, and the rear frame 10;

On one side of the joint 15 is the cable 2 described above.
A recess 15c is formed in which the locking mechanism is inserted and supported in the front-rear direction, and the recess 15c is closed with a cover 21 that is crowned on the outside. 15d, the middle part or the rear part is small in the vertical direction, and 15e, it is long in the front-back direction.
A substantially fan-shaped lock plate 22 is fixed to this portion of the above-mentioned support shaft 18 so as to be orthogonal to the shaft 18, and a plurality of engagement notches 22a are formed on the edge of the lock plate on the concave side. Form radially from the center. A support member 23 is fixed to the upper part of the large recess 15d of the recess 15c in the portion having the lock plate 22.
The base of a pawl piece 24, which is an intermediate transmission member, is pivotally supported by a pin 23a in the same direction as the support shaft 18 through a pin 23a, and the pawl piece 24 is swingable about a support point 23a at the upper end in a direction perpendicular to the axis of the support shaft 18. The lower end thereof is provided with a claw portion 24a on one side that engages with the notch 22a of the lock plate 22, and on the other side is provided with a concave notch 24b extending laterally outward and diagonally downward, and below the concave notch 24b. A pressing cam portion 24c is provided with a release cam portion 24d on top.

The cable 20 described above is connected to the recess 1 of the joint 15.
5c in the longitudinal direction, and recess 1
5c large recess 15d front edge 15f and small recess 15
The end of the cable outer 20b facing the cutout part is engaged with the rear end edge 15g of the cable outer 20b via the fastening tool 25, and is held by the cover 21, and the inner is inserted between the fastening tools 25 in the front-rear direction of the recess 15c. Coming. The portion of the inner 20a facing into the recess 15c is essentially one, but as is clear from FIG. 4, the front and rear portions 20c, 20d
These parts are connected by an adjuster 26. The adjuster 26 has inner and outer fitted rods 26a and 26b connected to the inner front one 20c.
and a connector 26d connected to the rear end of this via an adjuster screw 26c and connected to the rear part 20d of the inner 20a.
can be adjusted at this portion, and alignment is performed using alignment marks 15h provided in small recesses 15e. rod 2
A flange 26e is fixed to the flange 6a, and a return spring 27 is installed between the front surface of the flange 26e and the front edge 15f of the recess.
is installed so as to surround the cable inner and the front part of the rod, and the large diameter rod 26b on the rear surface of this flange 26e
The two tip portions 28a of the L-shaped operator 28 are sandwiched around the outer periphery to play with each other, and the front end of the two portions 28a is connected to the flange 2.
6e, and at the rear end of this is a slider flange 26f that is slidably fitted on the outer periphery of the rod 26b.
A relief spring 2 is installed between the rear surface of the flange 26f and the stopper 26g at the rear of the rod 26b.
9 is surrounded and interposed.

The operator 28 is L-shaped, and its bending center point is connected to the large recess 15 via the support member 30 by the pin 28b.
d, the pin 28b is provided in the left-right direction and is located below the cable in a direction substantially perpendicular thereto, and the arm 28c having a bifurcated portion 28a extends in the direction of the cable, and is extended in the same direction as the cable so as to be orthogonal to the pin 28b, and a rolling cam roller 28 is attached to the tip of the pin 28b.
e is provided, and this is engaged with the recess 24b of the pawl 24 described above.

In the above, before the cable 20 is pulled, that is, before the parking lock is operated, the rod is at the position shown by the imaginary line in FIGS. 3 and 4, and when the cable 20 is pulled, the rod 2
6a and 26b move forward against the spring 27,
The operator 28 engaged at the tip 28a is connected to the pin 28b.
The distal end portion 28a swings clockwise in FIG. 4 using the fulcrum as a fulcrum, and movement of the distal end portion 28a that causes the swing in the same direction as the cable is performed via the slider flange 26f by the action of the spring 29. This causes the roller 28e to
The lower pressing cam 24c moves downward within the recess 24b of No. 4.
The claw 24 is engaged with the third
The lock plate 22 is swung counterclockwise in the figure, that is, in the direction of the lock plate 22, and the claw portion 24a is in the cutout portion 22a.
engage with either. Thus lock plate 2
2 is locked by engagement with the pawl 24, the pivot 18 is prevented from rotating, and swinging movement is prevented. Note that if the claw portion 24a is located at a peak other than the notch 22a, the claw 2
4 is prevented from swinging in the locking direction, and therefore the operator 28 stops midway between the imaginary line and the solid line in FIG. 4, but the rods 26a and 26b move forward against the spring 29, is compressed and presses the tip end 28a of the operator 28 with a high spring load. Therefore, the spring 29 performs a relief action, and the cable inner 20a strokes even when the operator is locked in the intermediate position, allowing the downstream wheel lock operation to be performed without support. Since the operator 28 is biased in the locking direction as described above, when the front vehicle body 2, and therefore the support shaft 18, swings left and right, the claw portion 24a faces one of the notches 22a, and the spring 29 is biased. The engagement movement will be made at this point. At the time of release, the cable inner 22a returns under the bias of the spring 27, the operator 28 swings in the opposite direction, and the roller 28e pushes up the upper release cam part 24d, swinging the claw 24 clockwise in FIG. Then, the claw portion 24a is removed from the cutout portion 22a, and returns to the state shown by the imaginary line.

Figures 5 to 7 show the rear wheel locking mechanism;
A gear 31a is provided on one side of the final shaft 31 for driving the rear wheel 13 of the transmission case 12, and this meshes with the small diameter gear 32a of the intermediate shaft 32, and the coaxial large diameter gear 32b is connected to the small diameter gear 33a of the shaft 33. Close the mesh. A large-diameter stopper gear 34 is fixed to the shaft 33, and a lock pawl 35 having a claw portion 35a is pivoted adjacent to the stopper gear 34 by a pin 35b at one end. The upper part of the lock pole 35 is pivotally connected to one end of the link 36 by a pin 36a, the other end of the link 36 is pivotally connected to the tip of an arm 37 by a pin 36b, and the base end of the arm 37 is connected to the case 12 via a pin 38.
It is pivoted to a part of. The pin 38 and the arm 37 are connected by a relief spring 39 wound around the cylindrical boss portion 37a at the base of the pin 38, and a return arm 41 is biased by a return spring 40 so as to interfere with the arm 37.
One end of a lever 42 is connected to the extending end 38a of the pin 38, and the other end of the lever 42 is connected to the rear end 20e of the cable inner 20a described above. 44 is a stopper for the lever 42.

In the above, when the cable is not pulled, the toggle links 35, 3 are
6 and 37 are held in a reverse concave shape, as shown in Fig. 9,
The pawl 35 is moved backward and the claw portion 35a is removed from the valley 34a of the gear 34. When the parking lock is operated, the cable inner 20a is pulled, and the arm 37
swings counterclockwise in FIG. 9 via the spring 39, the link 36 moves, and the arm 37 and the link 3
6 is arranged in a straight line as shown in FIG. 8, the pawl 35 swings in the same direction as shown in FIG. The rear wheel 13 is thus locked, and this is shown in FIGS. 8 and 5.
It is shown as a solid line in the figure, and since a toggle link is used, the operating load is small and the engagement is reliable.
By the way, when the claw portion 35a hits the peak of the gear 34, the lever 42 moves to the seventh position due to the relief action of the spring 39.
The gear 34 swings from the non-operating position A to the locked position B shown in the figure, and the gear 34, and therefore the rear wheel 1
3 rotates back and forth, and at a position where the valley and the claw portion 35a match, the pawl 35 swings in the engagement direction and locks the engagement. If further tension is applied to the cable, spring 3
Due to the relief action of 9, the lever 42 is further moved to C in FIG.
Therefore, even if the cable is pulled excessively, it will perform a relief motion.

When the tensile load of the cable is released, the return arm 41 returns the arm 37 by the return action of the spring 40,
The pawl 35 is swung in the opposite direction to remove the claw portion 35a from the valley portion 34a.

As described above, a single cable can be used to lock the tricycle, lock the wheels, and release the tricycle by using one input system.

In the embodiment, the swing lock and wheel lock mechanisms are implemented using pawls and notches, but the specific lock mechanisms are arbitrary.

As is clear from the above, according to the present invention, it is possible to release both the rocking lock and the wheel lock of the tricycle at the same time using one cable system and one input system of the cable, and the operation of the parking lock can be performed simultaneously. This can be done twice, improving operability and preventing forgetting to lock each individual lock. In addition, since the operating element of the intermediate swinging lock mechanism is driven by a cable, the operating element pivots in a direction perpendicular to this, so the movement of the operating element is reliable and light, and the operating load is small, making it easy to operate. In addition to having the advantage of being
The wheel lock also has many advantages, including being reliable as mentioned above.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a schematic side view of a tricycle, Fig. 2 is a side view with the side of the joint opened, Fig. 3 is a sectional view taken along the line 3-3 in Fig. 2, Figure 4 is an explanatory view of the lock operator, with a cutaway view of the main parts, Figure 5 is a side view of the wheel lock mechanism, Figure 6 is a sectional view taken along the line 6-6 in Figure 5, and Figure 7 is a view taken from the arrow in Figure 6. The 7-direction view, FIGS. 8 and 9 are explanatory diagrams of the operation of the lock mechanism. In the drawing, 1 is a tricycle, 19 is an operator for a cable 20, 13 is a wheel, 34 to 42 are wheel lock mechanisms, 22 to 29 are swing lock mechanisms, and 28 is an operator thereof.

Claims (1)

[Scope of Claims] 1. A cable whose one end is connected to a tension/relaxation operator and whose other end is connected to a lock operator of a wheel locking mechanism, and one end of which is engaged with the intermediate part of the cable, , and an operator of a swing lock mechanism which swings in a direction intersecting with the above in a relaxing motion and whose other end engages with an intermediate transmission member of the swing lock mechanism. Locking device. 2. According to the above-mentioned patent claim, the engaging part of the cable swing lock mechanism with the operator is provided with elastic means for releasing the swing lock of the cable and allowing the cable to move in the pulling direction after the lock. A parking lock device for a tricycle as defined in Scope 1. 3. The operator of the lock mechanism is comprised of an L-shaped member with an intermediate portion pivotally supported, and one end is engaged with the cable and the other end is engaged with the intermediate transmission member of the swing lock mechanism. Tricycle parking lock device.