JPH0339867B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a rocking lock device for a rocking tricycle that is equipped with a prime mover and travels, and particularly relates to a rocking lock device for a rocking tricycle that is equipped with a prime mover, and particularly relates to a rocking lock device for braking during traveling, a braking lock for parking, and a rocking lock device. The present invention relates to a locking device for a tricycle that automatically and smoothly locks the tricycle at a speed below a predetermined speed.

(Prior technology) A rolling vehicle that is equipped with one front wheel and two rear wheels, and is driven by a prime mover that allows the rear vehicle body to swing vertically relative to the front vehicle body, and the front vehicle body swing horizontally relative to the rear vehicle body. The applicant had previously proposed a tricycle of the following type.

(Problems to be Solved by the Invention) In addition to being equipped with a braking device, such a tricycle
When parking, it is desirable to lock the brakes and also to lock the rocking movement in the left and right direction, that is, the rolling movement. Also, when driving, if the speed is above a certain level, the front vehicle body will be stable even if it is able to roll relative to the rear vehicle body, but when driving at low speeds below a certain speed or when stopping temporarily, the posture of the occupants will be unstable. Depending on the situation, there is a high possibility that the vehicle will sway from side to side, and it is particularly undesirable for the vehicle to sway from side to side at low speeds or when stopped with feet on a low-slung floor.

Furthermore, when the occupant attempts to stabilize his posture by correcting his posture at low speeds and stops, depending on the occupant's physique (for example, there are individual differences in height, weight, etc.) This caused problems such as the inability to maintain stability.

The present invention has been made in order to improve the above-mentioned disadvantages in motorized rocking tricycles, and its purpose is to detect and input the traveling speed below a predetermined value, and to use the input to detect the distance between the front and rear vehicle bodies. To provide a locking device for a rocking tricycle, which brakes and locks the rocking motion around the rolling axis of the tricycle, automatically and smoothly prevents the rolling motion when traveling at low speed or when stopped, and stabilizes the posture.

(Means for Solving the Problems) In order to solve the above problems and achieve the object, the present invention provides a swing shaft that swingably connects a fixed vehicle body and a swing vehicle body, and a swing shaft that connects the swing shaft to the swing shaft. The eccentric cam comprises a rocking suppressing means for suppressing rocking, a vehicle speed detecting means for detecting vehicle speed, and an eccentric cam connected to the vehicle speed detecting means to control the operation of the rocking suppressing means. The rocking tricycle comprises a rocking lock control device that rotates when the vehicle speed detecting means detects a vehicle speed below a predetermined speed, and that smoothly suppresses rocking of the rocking shaft by the rocking suppressing means. It features a locking device.

Further, in the present invention, one of the fixed vehicle body and the swinging vehicle body is provided with the swing shaft, and the other is provided with a joint case in which the swing shaft is rotatably incorporated, and in this joint case, the swing shaft is rotatably incorporated. , the rocking suppressing means and the eccentric cam are disposed, and a brake equalizer mechanism is disposed to be interposed in the operation system of the wheel brake device, and the brake equalizer mechanism is disposed laterally within the joint case. The vehicle is disposed in a formed storage chamber, and is characterized in that a connecting mechanism section for connecting the eccentric cam and the vehicle speed detection means is disposed within the storage chamber.

(Embodiment) Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

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 5 is attached to the front part of the front body 2 via a front fork 4. The front fork 4 extends upward and includes a handle 6 at its upper end. A headlight unit 7 is attached to the middle part of the handlebar 6, and a seat post 8 is attached upward to the rear of the front body 2.
is erected, and a sheet 9 is attached to the upper end of this. Rear frame 10 forming the main part of the rear vehicle body 3
An engine 11 is mounted on the top, and two rear wheels 13, which are drive wheels, are arranged on the left and right sides of a transmission case 12 that is connected to the transmission case 12 and extends rearward.
The case 12 is 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 can swing vertically, that is, swing freely, 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 of the vehicle, and the upper end of the unit 17 is connected to the seat post 8 of the front body 2.
Pivotally attached to the middle part. The joint 15 is rotatably fitted to the tip of a longitudinal support shaft (swing shaft) 18 fixed to the rear frame 10 side via a bearing 19 as shown in FIG. The joint 15 swings around the joint 15, that is, the front vehicle body 2 can freely roll relative to the rear vehicle body 3, and although not shown, the rotation around the support shaft 18 in the joint 15 is relaxed. Neidhardt damper etc. are installed inside.

The joint 15 is in the shape of a hollow case having a length from front to back, and a plurality of control disks 21 are connected to the front end of the support shaft 18 via a clutch inner-like holder 20.
However, the control disks 22 are slidably disposed in grooves 15d provided in the inner wall of the front portion 15c of the joint 15, and are inserted between the disks 21. A pressure plate 24 biased in the expansion direction is provided on the front inner wall side, and a protrusion 24 provided in the center of the pressure plate 24
An eccentric cam 25 faces a, and a lock arm (input member) 26 whose base is connected to a support shaft 25a of the eccentric cam 25 pushes the pressure plate protrusion 24a by swinging to the left as indicated by the chain line A in FIG. Pressure plate 2
4 smoothly pushes the disks 22, 21 to frictionally engage the disks 22, 21, and the rocking movement of the joint 15 around the support shaft 18, that is, the rolling movement of the front vehicle body 2, is braked and locked with appropriate hardness.

A recess 15e is provided on one side of the joint 15,
Brake cable 27 is attached to the front wall 15f of the recess 15e.
The downstream end of the outer 27b is engaged, and the upstream end of the inner 27a is connected to a brake operator such as a brake lever or a brake pedal. Inner 27a
The downstream end of the equalizer holder plate 28 is connected to the front end 28a of the equalizer holder plate 28 floating in the front part of the recess via a tie rod 27c. An equalizer 29 is provided so as to sandwich both sides of the intermediate portion 28b of the plate 28, and the equalizer 29 consists of left and right plate members 29a, 29a, and has two strips at the upper and lower rear ends thereof for outputting to the braking devices of the left and right rear wheels 13. The upstream ends of the inner 30a of the cables 30, 30 are connected via the tie rod 30c, and the equalizer 29
The pin 29b suspended horizontally in the middle part of the long hole 28
It is engaged with c. Therefore, by pulling the brake cable inner 27a, the plate 28 moves forward (to the right in the figure) as shown by the chain line B in FIG.
The equalizer 29 that is engaged moves as shown by the chain line C, and the cable inners 30a, 30a are pulled and braked. In the figure, 31 is a support that serves as a guide for the two upper and lower cables 30, 30 and as a stopper for the equalizer 29. The upstream end of the outer 30b of the cable 30 is attached to the rear wall 15g of the recess.

The rear end portion of the rear portion 28d extending rearward of the plate 28 is pivotally connected to the intermediate portion of a first link 32 disposed in the intermediate portion of the recess 15e by a pin 32b, and the upper end of the link 32 is connected to the recess wall. The lower end of the link 32 is pivoted around the pin 32a as a fulcrum, and the lower end of the link 32 is attached to the pin 32a.
It is pivotally connected to the lower end of the second link 33 via c. The links 32 and 33 are composed of two left and right long plates joined together, and the second link 33 is arranged to sandwich the first link 32, and the inner 30a described above is
extends rearward through between the plates of the link 32. A locking pin 33a is provided at the upper end, which is the free end of the link 33, and one end of the spring 34 is locked to this, and the other end of the spring 34 is connected to the lock arm 2 described above.
Adjustment member 35 is attached to the bent hanging portion 26a at the tip of 6.
The spring load can be arbitrarily adjusted by adjusting the member 35.

In the middle part of the second link 33, the left and right arm parts 36a of a planar U-shaped actuating plate 36 are fitted together so as to sandwich the outside, and a long hole 36b provided in the front and rear direction in the arm part 36a is formed in the middle part of the link 33. Pin 3 provided
3b, the rear end of the actuating plate 36 is connected to the upstream end of the inner 37a of the actuating cable 37, and the upstream end of the outer 37b is engaged with the wall 15g via an adjuster 38.

In the above, the first link 32 swings counterclockwise in FIG. 2 at the fulcrum 32a via the pin 32b due to the already described right movement of the plate 28 in FIG. also moved to the right,
As shown by the chain line D, no rightward load is applied to the actuating plate 36 due to the sliding of the pin 33b of the second link within the elongated hole 36b, and therefore the cable 37 is not applied during braking.
The braking input to a will be cut off.

The inner 37a of the actuation cable is a rotation detection device (vehicle speed detection means) of the rotating shaft that constitutes the inhibitor.
The device is as shown in FIGS. 7 to 9, and a driven shaft 39 is provided in a part of the transmission case 12 described above, which is driven by a gear 38a by rotation of the axle, and the outer end of the driven shaft 39 is connected to the drive shaft 39. A centrifugally expanding type governor weight 40 is fixed to the holder 40b via a pin 40a, while a cylindrical detection shaft 41 is rotatably fitted to the shaft 39, and a quick threaded portion 41a is attached to the outer periphery of the shaft 41. , which has a quick screw 42a on its inner diameter, and a spring 4
The slider 42 urged in the return direction is screwed together at 2a, the slider 42 is connected to the fork member 43 pivotally supported by a pin 43a, the base end of the arm 44 is tied to the pin 43a, and the tip of the arm 44 is connected. extends outward from the case 12 and is connected to the downstream end of the inner 37a of the cable 37 via a tie rod 37c. When the rotation of the axle exceeds a predetermined value, the driven shaft 3
9, the governor weight 40 expands against the spring 40c, the weight 40 separates from the detection shaft 41, the detection shaft 41 does not move, and the driven shaft rotates idly.
When the vehicle speed becomes lower than a predetermined speed, the weight 40 contracts, engages with the detection shaft 41 and drives it, and the slider 42 engaged with the quick screw moves to the left in FIG.
The fork 43 swings counterclockwise in FIG. 7 against the spring 43b, and the arm 44 swings from the chain line E to the solid line, whereby the cable inner 37a
will be pulled.

Therefore, when the vehicle speed becomes lower than a predetermined speed (including stopping, of course), the cable inner 37a is pulled as described above, and the operating plate 36 at the upstream end of the cable inner 37a is moved backward as shown in FIG. The pin 33 becomes like the chain line F and engages with the elongated hole 36b.
b collides with the front end of the elongated hole and is pulled backward, and the second link 33 swings to the left (counterclockwise) in FIG. Links 33 and 32 will be moved.
opens in a V-shape as shown by the chain line G. As a result, the spring 34 is tensioned, and the lock arm 26 is swung clockwise in FIG. 5 as shown by A, thereby smoothly braking the support shaft 18 and thus performing a rolling lock.
In this way, at low speeds, this is detected and the swinging around the support shaft 18 is automatically and smoothly locked, thereby preventing the front vehicle body 2 from swinging relative to the rear vehicle body 3.

A pin 45a is attached to the lower end of the intermediate lower part of the recess 15e.
A parking actuation arm 45 is provided, which is pivoted at
The arm 45 includes arm portions 45c and 45e spaced apart from each other in the left and right directions at both axial ends of a boss portion 45b at the lower end, and an L-shaped notched engagement shoulder portion 45d is provided at the front portion of one of the bifurcated arm portions 45c. , arm portion 45
Inserting the already mentioned equalizer 29 between c and 45e,
One end extension 29c of the previously described pin 29b is brought into contact with the rear end of the engagement shoulder 45d. The other arm part 4
5e extends upward, and the downstream end of a rigid L-shaped member 47 connected to the downstream end of the outer 46b of the operating cable 46 is pivoted to the upper bifurcated portion 45f by a tie rod 47a, and the downstream end of the inner 46a is shown in FIG. As shown, it engages with an elongated hole 26b formed at the tip of the lock arm 26 via a pin 46c. The upstream end of the inner 46a of the cable 46 is connected to the base of a parking operating lever 49 whose base is pivoted to a support member 48 interposed between the seat post 8 and the seat 9, and 50 in the figure is a recess 15e. It is a cover that covers the

In the above, when the parking lock is performed by swinging the operating lever 49 toward the front in FIG. 1, the cable inner 46a is pulled;
The downstream end engages with the elongated hole 26b of the lock arm 26 and becomes fixed at the limit of its movement, while the other member 47 is a rigid body bent into an L shape, so as a reaction, the fourth
The member 47 is pressed diagonally to the upper right in the figure, and as a result, the member 47
moves forward as indicated by chain line H, that is, moves to the right in the figure, and arm 4
5 swings clockwise as shown by the chain line I using the pin 45a as a fulcrum. As a result, the pin 2 at the engagement shoulder 45d
9b is moved to the right as shown by the chain line J, the equalizer 29 is moved to the right as shown by the chain line K, and the cable inner 30a is pulled to lock the rear wheel 13. In this case, the pin 29b is inserted into the elongated hole 28c of the plate 28.
slides and does not interfere with the brake system.

As described above, by operating the parking operation lever 49, the brakes are applied without interfering with the brake operation system during driving to lock the parking by braking, and when the vehicle is stopped, the rolling movement is automatically locked as described above. becomes.

Although the embodiments have been described in detail above, the specific structure of the vehicle speed detection means, so-called inhibitor detection section, is arbitrary.

(Effects of the Invention) As is clear from the above, according to the present invention, the rocking motion (rolling motion) of the tricycle is automatically and smoothly locked when the tricycle is running at low speed or when it is stopped, and therefore, the low-floor type makes it possible to Even when driving together, the vehicle's posture does not become unstable at low speeds or when stopping, and it is possible to stop the vehicle in a stable manner regardless of the occupant's physique. This can be achieved mechanically without difficulty, and furthermore, it is of great importance in a uniformly rocking tricycle that can be mechanically designed with a simple structure.

Further, according to the present invention, the eccentric cam and the vehicle speed detection means are installed in the brake equalizer mechanism storage chamber formed on the side of the joint case in which the swing shaft is incorporated and the swing suppressing means and the eccentric cam are arranged. Since the connection mechanism section of the brake equalizer mechanism is also housed in one place, the storage space for the brake equalizer mechanism can be effectively utilized.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention. Fig. 1 is a side view of a tricycle, Fig. 2 is a side view of the main parts of the device, with the braking state indicated by chain lines, and Fig. 3 is a diagram showing the vehicle speed detection state. Figure 4 similar to Figure 2 with the operation indicated by dashed lines.
The figure is a diagram similar to Figure 2 showing the operation in the parking operation state with chain lines, Figure 5 is a cutaway plan view of the main parts of the device, Figure 6 is an exploded perspective view of the main parts of the mechanism, and Figure 7 is rotation detection. The vertical side view of the device, FIGS. 8 and 9, are cross-sectional views taken along lines 8-8 and 9-9 in FIG. In the drawing, 1 is a tricycle, 2 and 3 are a vehicle body, 18 is a support shaft (swing shaft), 20 to 24 are restraining means, 25 is an eccentric cam, 26 is a lock arm (input member), 3
3, 34, 35, 36, 37 are connecting means, 38,
44 is a detection and output means.

Claims (1)

[Scope of Claims] 1. A rocking shaft that swingably connects the fixed vehicle body and the rocking vehicle body, a rocking suppression means provided on the rocking shaft to suppress rocking, and a vehicle speed that detects the vehicle speed. and an eccentric cam connected to the vehicle speed detecting means to control the operation of the rocking suppressing means, the eccentric cam rotates when the vehicle speed detecting means detects a predetermined vehicle speed or less, and prevents the rocking from occurring. A rocking lock control device is configured to smoothly suppress the rocking of the rocking shaft by the restraining means, and the rocking shaft is provided on one of the fixed vehicle body or the rocking vehicle body, and the rocking shaft is provided on the other. A joint case is provided in which a rocking shaft is rotatably incorporated, and the rocking suppressing means and the eccentric cam are disposed within the joint case, and the joint case is also provided with an operating system for a wheel brake device. A brake equalizer mechanism is disposed in a storage chamber formed on the side of the joint case, and a connection mechanism between the eccentric cam and the vehicle speed detection means is installed in the storage chamber. A locking device for a rocking tricycle, characterized in that a rocking tricycle is provided with a locking device.