JPS6345361Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is designed to lock the rear wheel, lock the front body of the vehicle when it is parked, lock the front body of the vehicle from side to side, or swing, and steer the front wheel. This invention relates to a parking device that can simultaneously lock a wheel steering mechanism.

Prior Art In a conventional rocking tricycle, in which a front body having one front steering wheel is connected to a rear body having two rear drive wheels so as to be able to swing from side to side, the rear body can be moved by operating a parking lever. The tricycle was parked by locking the wheels and preventing the front body from swinging from side to side to prevent theft.

Problems to be Solved by the Invention However, in the above-mentioned conventional technology, although it is possible to lock the rear wheels and prevent the front vehicle from swinging, the single front steering wheel can freely turn left and right, and the vehicle remains firmly in place while parked. I couldn't fix it.

The present invention relates to an improvement of a parking device for a rocking tricycle that eliminates these inconveniences.The purpose of this invention is to provide a parking device with excellent operability that can securely fix the vehicle body when parking. It is in.

Means and Effects for Solving the Problems In accordance with the above object, the present invention has a front vehicle body having one steering wheel in the front, a rear vehicle body having two rear driving wheels, and In the rocking tricycle, the locking mechanism of the drive wheel and the locking mechanism of the connecting part are connected to a parking lock lever provided on a steering pipe of a front vehicle body via a parking cable. In addition, a steering lock plate is fixed to the head pipe of the front vehicle body, and a locking portion for a stopper pin of the steering lock mechanism provided on the steering pipe is provided on the plate, and the locking portion is configured such that when the stopper pin is pressed against the steering plate, The steering lock mechanism is arranged so as to lock the stopper pin only at a predetermined rotational position of the steering pipe, and the steering lock mechanism is connected to the parking lock lever, and when the parking lock lever is operated, the driving wheels are simultaneously locked, the connecting portion is locked,
and the steering wheel can be locked, and the driving wheel of the rear vehicle body and the connecting portion can be connected to each other via a parking cable by operating a parking lock lever attached to the steering pipe. This operation also presses the stopper pin of the steering lock mechanism against the steering lock plate fixed to the head pipe to the front body, and if the stopper pin is in the position corresponding to the hole provided in the steering lock plate, it will be inserted immediately. The steering wheel can be locked so that it cannot be turned, and when it is not in the corresponding position, the stopper pin can be moved to the corresponding position by slightly turning the handle, so that it can be locked.

Embodiment An embodiment of the present invention illustrated in FIGS. 1 to 12 will be described below.

Reference numeral 1 designates a swinging motor tricycle. In the tricycle 1, a front body 2 having one steering wheel 3 and a rear body 7 having two rear driving wheels 8 are connected to the front body through a connecting portion 9. are connected to be able to swing from side to side.

The connecting portion 9 also includes a frame 4 of the front vehicle body 2.
A bearing part 12 and a Neidhardt mechanism 13 are provided in a joint case 10 whose front end is pivotally supported via a shaft 6 to a bracket 5 which is integral with the tricycle 1 and which can swing vertically. Axis 11
However, the bearing portion 12 and the Neidhardt mechanism 13
It is supported by the Neidhardt mechanism 13 so as to be able to freely rotate left and right, and to elastically return to the neutral state. Therefore, a shock absorber 5a is interposed between the joint case 10 and the vehicle body frame 4 to soften the vertical swing of the front vehicle body 2.

Furthermore, the Neidhardt mechanism 13 includes an outer 14 that is integrally fixed to the joint case 10, an inner 15 that is integrally fitted to the swing shaft 11, and a damper that is centrally symmetrically interposed between the outer 14 and the inner 15. The Neidhardt mechanism 13 has a spring characteristic such that as the rotation angle of the inner 11 increases, the restoring force that attempts to return the inner 11 to neutral increases nonlinearly.

Furthermore, as shown in FIGS. 4 and 5, a swing lock plate 17 is integrally fixed to the front end of the swing shaft 11, and the swing lock plate 17 has five locking grooves 18 every 10 degrees. A stopper 19 is pivotally attached to the end face of the swing lock plate 17 so as to be rotatable around a pin 19a, and when the stopper 19 approaches the swing lock plate 17, the stopper 19 It is engaged with either the tip locking piece 20 or the locking groove 18 to fix the swing shaft 11 so that it does not rotate.

Further, the stopper 19 is connected via a link 21 to an arm 22 that rotates around a pin 22a, and the arm 22 is connected to a parking cable 23.

Furthermore, in the power unit 24, the engine 2
The rotational torque of the wheel 5 is transmitted to a driven pulley 27 via a belt 26, and the torque transmitted to the driven pulley 27 is transmitted to the driving wheels 8 via a centrifugal clutch 28, a reduction gear device 29 and a differential clutch 30.

As shown in FIGS. 6 and 7, a parking gear 31 is interposed in the reduction gear device 29 in the power transmission system of the power unit 24, and the parking gear 31 is disposed opposite to the circumferential surface of the parking gear 31. A lock arm 33 is pivotally mounted around a pin 33a.

Further, the tip of the lock arm 33 is connected to a link 35.
The arm 36 is connected to a lever 37 via a spring mechanism (not shown).
The parking cable 23 is tied to the tip of the lever 37, and when the parking cable 23 is pulled in the direction of arrow A, the lever 37 moves in the direction of arrow A against the spring force of the return spring 38.
The arm 36 is rotated about the pin 37a in the direction
Correspondingly, the lock arm 33 is also rotated around the pin 37a and transmitted to the lock arm 33 via the link 35, and the lock arm 33 is connected to the parking gear 31.
The tip protrusion 34 is locked and fixed in the groove 32 of the parking gear 31.

Furthermore, as shown in FIGS. 1 and 8, the parking cable 23 is extended from the rear vehicle body 7 to near the upper end of the steering pipe 39 of the front vehicle body 2, and the upper end of the parking cable 23 is connected to the cable joint 40. Link arm 41 through
Connect to.

Furthermore, the link arm 41 is pivotally supported on the steering pipe 39 so as to be rotatable about a pin 41c in the vertical direction.
3 is pivotally mounted vertically around a pin 43a so as to be rotatable about the pin 43a, and the roller 44 of the parking lock lever 43 is engaged with the receiving piece 42 of the link arm 41. As shown in FIG. 8, when the tip of the parking lock lever 43 is positioned downward,
When the roller 44 is positioned upward and the receiving piece 42 is positioned upward, the cable joint 40 is lowered downward, and the parking cable 23 is unwound. Conversely, as shown in Figure 9, when the tip of the parking lock lever 43 is pulled upward, the receiving piece 42 is pushed downward by the roller 44, and in response, the cable joint 40 is raised upward, and the parking cable 23 is pulled up.

In addition, a steering lock plate 46 is integrally fixed to the upper end of the head pipe 45 of the front vehicle body 2.
The lock plate 46 is provided with one or more circular holes 47 for locking (at equal intervals in the circumferential direction),
A stopper holder 48 is located above the lock plate 46 and is integrally fixed to the steering pipe 39, and the stopper pin 4 is attached to the holder 48.
9 is fitted in a vertically slidable manner, and when the stopper pin 49 is fitted and locked in the circular hole 47, the steering pipe 39 is fixed.

Further, an arm 50 is rotatably attached to the stopper holder 48 about a pin 51, and a rear end 50a of the arm 50 is pivotally attached to the stopper pin 49 via a connecting pin 55.

Furthermore, the upper end of the rod 53 is connected to the link arm 4.
1, and the rod 5
The lower end of the spring 54 is loosely fitted into the long hole 52 at the front end 50b of the arm 50, and one end of the spring 54 wound around the pin 51 is engaged with the connecting pin 55 of the stopper pin 49, and the other end of the spring 54 is engaged with the connecting pin 55 of the stopper pin 49. is engaged with the lower end of the rod 53, and when the rod 53 is pulled upward and the stopper pin 49 does not align with the circular hole 47 of the lock plate 46 as shown in FIG. The rod 53 and arm 50 are elastically deformed.
And the stopper pin 49 is designed so that no excessive force is applied to it.

Further, the upper end of a spring member 57 is locked to the rear part 41b of the link arm 41, and the lower end of the spring member 57 is connected to the rear end 50 of the arm 50.
It is locked on a.

Since the embodiment shown in FIGS. 1 to 12 is constructed as described above, when the parking lock lever 43 is rotated downward as shown in FIG. The rod 53 is pushed down, the parking cable 23 is let out by the spring force of the return spring 38, and the locking piece 20 of the stopper 19 locks onto the swing lock plate 17, as shown in FIGS. 2 and 4. At the same time, as shown in FIG. 6, the tip projection 34 of the lock arm 33 is removed from the groove 32 of the parking gear 31, and as shown in FIG. 53 and the spring member 57 pulls up, the lower end of the stopper pin 49 is pulled upward and away from the steering lock plate 46, and therefore, in the rocking tricycle 1, the drive wheel 8 becomes rotatable. The front vehicle body 2 can swing left and right with respect to the rear vehicle body 7, and the handle 56 can be steered left and right, thus making it possible to drive.

If you wish to park your car, use the parking lock lever 43 as shown in FIG.
When the cable joint 40 and the rod 53 are pulled upward, the parking cable 23 is pulled upward and forward against the spring force of the return spring 38, as shown in FIG. , the locking piece 20 of the stopper 19 is engaged with the locking groove 18 of the swing lock plate 17, and the tip projection 34 of the lock arm 33 is engaged with the groove 32 of the parking gear 31, as shown in FIG. As a result, the driving wheels 8 are locked, and the front body 2 is integrally connected to the rear body 7 and swing-locked. At the same time, if the stopper pin 49 is located directly above the circular hole 47 of the steering lock plate 46,
That is, when the handle 56 is in the corresponding position, the stopper pin 49 is thrust into the circular hole 47 and engaged with the rise of the rod 53, as shown in FIG. 12, and the handle 56 is also locked. However, if the stopper pin 49 is not located directly above the circular hole 47, the spring 5
4 is elastically deformed, and the tip of the stopper pin 49 is pressed against the steering lock plate 46 by the spring force of the spring 54. From this state, if the steering wheel 56 is slightly turned to the left or right,
When the stopper pin 49 matches the circular hole 47 of the steering lock plate 46, it is engaged with the circular hole 47 as shown in FIG. 12, and the handle 56 is also locked. In other words, the handle 56 can be reliably locked by employing a so-called lost motion mechanism that can be brought into engagement only after the handle 56 has been moved to a predetermined position.

In this way, in the embodiment, by operating the parking lock lever 43, the drive wheels 8 can be locked and unlocked, the front vehicle body 2 can be swing-locked, and the front vehicle body 2 can be swing-locked.
Unlocking, steering wheel locking, and unlocking can be performed at the same time, and these operations can be easily performed.

In addition, even if the handle 56 is not oriented in a predetermined direction, the locking state can be achieved, and then the handle 56 can be locked.
If you turn 6 slightly to the left or right, the steering wheel will automatically lock.

Furthermore, operate the parking lock lever 43 downward to rotate the link arm 41 counterclockwise,
When the parking state is released, if the rod 53 comes off from the link arm 41 or the arm 50, or if the rod 53 breaks, the counterclockwise rotation of the link arm 41 may be transmitted to the arm 50 via the rod 53. Even without the handle 5, the rotation of the link arm 41 can be transmitted to the arm 50 via the spring member 57.
6 can be definitely unlocked.

Moreover, as shown in FIG. 9, by operating the parking lock lever 43 upward, the link arm 41
When the stopper pin 49 cannot fit into the circular hole 47 of the steering lock plate 46 as shown in FIG.
Even if the distance from the rear end 50a of the link arm 41 and the arm 50 changes, the elastic deformation of the spring member 57 prevents unreasonable force from acting on the link arm 41 and the arm 50.

In the embodiment shown in FIGS. 1 to 12, the upper end of the rod 53 is pivoted to the link arm front portion 41b on the same side as the pivoting side of the cable joint 40, but in the embodiment shown in FIGS. As shown,
The upper end of the rod 53 is pivotally connected to the rear part 41b of the link arm on the opposite side to the pivoting side of the cable joint 40, and a stopper pin 58 is attached to the lower end of the rod 53 so as to be slidable up and down.
A locking pin 59 is fitted to the upper end, a coil spring 60 is interposed between the enlarged part 58a of the stopper pin 58 and the lower end of the rod 53, and the enlarged part 58a of the stopper pin 58 is slidably inserted into the guide sleeve 61. May be fitted. In such embodiments,
The same effects as the embodiments shown in FIGS. 1 to 12 can be achieved, and the arm 5
Since 0 is not required, the structure is simple and compact, and the cost is low.

In this embodiment, the lower end of the spring member 57, which functions to separate the stopper pin 58 from the circular hole 47 of the steering lock plate 46 when the parking state is released, is attached to the small diameter portion 58b of the stopper pin 58. 1
Similar to the embodiment shown in FIGS. 1 to 12, the handle 56 can be reliably unlocked in the parked state.

The present invention can also be constructed as shown in FIGS. 18 to 20.

In the embodiment shown in FIGS. 1-12 or 13-17, the circular hole 47 of the steering lock plate 46 is connected to its sleeve 62.
A spring receiver 63 is provided below the spring receiver 63, a flanged pressing pin 64 is fitted into the sleeve 62, a compression coil spring 65 is interposed between the spring receiver 63 and the pressing pin 64, and the compression coil It is sufficient to set the spring force of the spring 65 to be weaker than the spring force of the spring 54 and the coil spring 60. In such an embodiment, when the rod 53 and its attachment part are normal and the parking lock lever 43 is operated for parking, , as shown in FIG. 19, the compression coil spring 6
If the stopper pins 49, 58 are fitted into the sleeve 62 against the spring force of the compression coil spring 65 and the rod 53 and its attachment part break or come off, the spring force of the compression coil spring 65 will cause the stopper pins 49, 58 to fit into the sleeve 62, as shown in FIG. The stopper pins 49 and 58 can be removed from the sleeve 62 as shown in FIG.

Effects of the Invention As described above, the present invention includes a front vehicle body having one front steering wheel, a rear vehicle body having two rear wheels, and a connecting portion that connects the front vehicle body and the rear vehicle body so as to be able to swing from side to side. In the swinging tricycle, the steering lock mechanism for the steering wheel as described above is connected to the parking lock lever that simultaneously locks the rear drive wheel and the swinging connection part via the parking cable, so that the steering lock mechanism for the steering wheel as described above is connected to Rock,
The stopper pin can be unlocked, swing-locked and unlocked the front vehicle body, and locked and unlocked the steering wheel with a single operation, and is biased downward and can engage with the locking portion of the steering lock plate. By adopting the above-mentioned lost motion mechanism, the handle can be automatically engaged by only slightly turning the handle to the left or right, and the handle can be locked reliably and easily.

[Brief explanation of drawings]

Fig. 1 is a side view of a rocking tricycle equipped with an embodiment of the parking device according to the present invention, Fig. 2 is a plan view of the main part thereof, and Fig. 3 is a cut along the - line in Fig. 2. Figures 4 and 5 are side views of the swing lock part, Figure 4 shows the unlocked state, Figure 5 shows the locked state, and Figures 6 and 7 show the drive wheel in the locked state. In a side view of the part,
Figure 6 shows the unlocked state, Figure 7 shows the locked state, and Figures 8 and 9 are side views of the parking lock lever, with Figure 8 showing the unlocked state and Figure 9 the locked state. Figures 10 to 12 are longitudinal sectional side views of the handle lock portion, with Figure 10 showing the unlocked state, Figure 11 showing the unlocked state in the locked operating state, and Figure 12 showing the locked state. 13 and 14 are side views of the parking lock lever in another embodiment, showing the unlocking state, FIG. 14 showing the locking state, and FIGS. 15 to 17 showing the same embodiment. FIG. 15 is a vertical sectional side view of the main part of the example, and shows the unlocked state.
Fig. 16 shows the unlocked state in the lock operation state, and Fig. 17 shows the locked state.
18 to 20 are longitudinal sectional side views of main parts of still another embodiment, in which FIG. 18 shows a state in which the steering has been locked but not yet locked, and FIG. 19 shows a state in which the steering is locked. FIG. 20 shows a state in which the steering lock is automatically released when the locking mechanism of the steering portion fails. 1... Rocking type automatic tricycle, 2... Front body, 3...
...Steering wheel, 7...Rear body, 8...Drive wheel, 9...
Connection part, 11... Swing shaft, 17... Swing lock plate, 19... Stopper, 23... Parking cable, 31... Parking gear, 33
... Lock arm, 38 ... Return spring, 39 ... Steering pipe, 41 ... Link arm, 43 ... Parking lock lever, 4
5... Head pipe, 46... Steering lock plate, 47... Circular hole, 49... Stopper pin, 50... Arm, 53... Rod, 57...
...Spring member, 58...Stopper pin.

Claims (1)

[Scope of utility model registration request] A rocking tricycle comprising a front vehicle body having one front steering wheel, a rear vehicle body having two rear driving wheels, and a connecting portion connecting the front vehicle body and the rear vehicle body so as to be swingable from side to side. The wheel locking mechanism and the locking mechanism of the connecting portion are connected to a parking lock lever provided on the steering pipe of the front vehicle body via a parking cable, and a steering lock plate is fixed to the head pipe of the front vehicle body, and the steering lock plate is fixed to the head pipe of the front vehicle body. A locking portion for a stopper pin of a steering lock mechanism provided on the pipe is provided, and the locking portion is arranged so as to lock the stopper pin only at a predetermined rotational position of the steering pipe when the stopper pin is pressed against the steering plate, The rocking tricycle is characterized in that the steering lock mechanism is connected to the parking lock lever, and by operating the parking lock lever, the drive wheels can be locked, the connecting portion can be locked, and the steered wheels can be locked at the same time. parking device.