JPS632834B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a parking device for a tricycle having one front wheel and two rear wheels, in which the front body is connected to the rear body so as to be swingable.

More specifically, in the above-mentioned tricycle, the parking brake mechanism and the locking mechanism of the swinging mechanism of the front body can be operated simultaneously with one operation, so that the brake and swinging lock operations can be performed easily when parking. Regarding a parking device for a tricycle.

Tricycles with one front wheel and two rear wheels equipped with a motor are already known, and small versions of this type are available.
To provide a tricycle that further simplifies and downsizes a conventional small tricycle, and provides the same driving operability, handleability, running performance, and running feeling as a simple and compact two-wheeled vehicle, even though it is a tricycle.

In such tricycles, including conventional small tricycles, the front body is swingably connected to the rear body of the two rear wheels to prevent the front body from swinging when steering, changing direction, etc. It is configured as follows.

By the way, when parking such a tricycle, unlike a two-wheeled vehicle that is parked in an inclined position on a stand, it requires a parking brake like a four-wheeled vehicle, and since the front body can swing freely relative to the rear body, it is difficult to park the tricycle. A locking mechanism to prevent rocking is required to protect the mechanism.

Therefore, it has been considered to provide a parking brake device and a swing lock mechanism separately, but in this case, each operation must be performed separately, resulting in double effort, and it is particularly easy to forget to perform one operation. Furthermore, even if you operate both to lock the wheels and lock mechanism, there is a risk of forgetting to release one when you release them, and the release work is duplicated, making it troublesome and complicated. I forgot to release the mechanism and drove.
This can easily lead to a situation where the front vehicle body does not swing when turning or the like.

The inventors of the present invention have devised the present invention in view of these problems with tricycles and to solve them.

An object of the present invention is to provide the above-mentioned tricycle with a swingable front body, which includes a parking brake mechanism that locks the wheels when parking, and a lock mechanism that locks the front body against the rear body so as not to be able to swing. To provide a parking device for a tricycle that can be operated simultaneously by operating two operators, simplifies both operations, prevents forgetting to perform an individual operation, and prevents forgetting to forget a release operation, and improves operability and safety. .

Another object of the present invention is to provide a tricycle in which the above-mentioned operating element is provided near the steering handle, so that the installation space can be used effectively, and where the operating element does not become an obstacle to driving etc. and is located at a location where it can be easily operated. Provide parking equipment.

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.

1 and 2 are a side view and a plan view schematically showing a tricycle. The tricycle 1 consists of a front body 2 and a rear body 3. FIG. A head tube 5 is provided at the front end of the frame 4 of the front body 2, and a front fork 6 is installed longitudinally through the head tube 5. A single steering front wheel 7 is supported at the lower end of the front fork 6, and a handle is provided at the upper end of the front fork 6. 8 is installed.

The frame 4 is made of pipe material, and its front portion 4
a is inclined obliquely downward and rearward from the rear lower part of the head tube 5, and the intermediate portion 4b is extended rearward at a low position;
The rear part 4c rises upward to form a seat post 9, and a seat 10 for the seat is attached to the upper end of this post 9.
is installed.

A joint 20 is provided below the seat 10, and its rotation and swing shaft 21 extends forward, and the front end of the shaft 21 is tied to the rear of the horizontal portion 4b of the frame 4 of the front vehicle body 2. One end of a rear frame 23 is coupled to the case 22 of the joint 20, and a rear fork 2 that supports two rear wheels 24, 24 is connected to the case 22 of the joint 20.
A drive unit 27 is pivotally mounted on the rear fork 25 so as to be able to swing freely around a pin 26.
is installed, rear fork 25 and rear frame 2
A rear action unit 28 is provided between the rear wheels 3 and 3, and in the illustrated example, the power of the drive unit 27 is transmitted to the rear wheels 24, 24 by means of belts and pulleys. Thus, the front vehicle body 2 is swingable relative to the rear vehicle body 3.

In the tricycle 1 described above, an operating lever 32 is swingably pivoted to a bracket 30 provided at the rear upper part of the head tube 5 via a pin 31, and is turned off when it is perpendicular to the head tube 5 as shown in FIG. , this is lifted upward in the figure and the state shown by the chain line is the state in which the parking brake is activated and the swing lock is activated. The tip of a cable 34 is connected to the other end of the mounting piece 33, one end of which is connected to the lever 32.
It passes through the inside and reaches 20 parts of the joint.

4 to 6 are enlarged views of the joint portion showing the swing lock mechanism, and FIG. 7 is an enlarged view of the axle portion showing the parking brake mechanism.

A bracket 36 is installed on the case 22 of the joint 20, and calipers 38 and 39 that pivot to open and close using a pin 37 as a fulcrum are installed on this bracket.
Parking brake cable 3 to 8a and 39a
4, 35, and lock the opposite ends of the cables 34, 3.
One inner 34a of 5 is the outer 34 of one 34
b moves freely, and moves together with the outer 35b of the other 35. These caliper lower ends 38a, 39a
A return spring 40 is interposed around the cable inner 34a between them, and presses the calipers 38, 39 in the direction of opening. The upper end of one caliper 38 above the pin 37 has a protrusion 38b.
is formed, and the upper end 39b of the other caliper 39
A cushion material 39c is provided as a flat layer.

At the lower part of the rear part of the front vehicle body 2, as shown in FIG.
A lock plate 41 with a toothed portion 41a formed thereon is fixed, and a portion 4 of this lock plate 41 with a toothed portion 41a formed thereon is fixed.
1b to each upper end 38 of the caliper 38, 39.
b, 39b are arranged so that they do not come into contact with each other during normal times, but face each other at a distance.

On the other hand, the parking brake cable 35 mentioned above
The inner 34a, which is integral with the inner 34a, is guided rearward to the calipers 43a, 43b of a disc brake type parking brake device 43 provided adjacent to the flange portion 42a of the pulley 42 that drives one side 24a of the rear wheels 24. The cable outer 35b is locked to the other side, and the caliper 43
Pads 43c, 43 provided at each tip of a, 43b
c faces the flange portion 42a.

The other cable 34 mentioned above is extended through the pipe space in the front vehicle body 2 to a point in front of the head tube 5, and is connected to an operating lever 32 which is pivotally mounted on the head tube 5.
Connect the end of the inner 34a to the mounting piece 33 of.

In the above process, the operation lever 32 is swung upwardly, and the cable inner 3
4a to swing the calipers 38 and 39 in the closing direction, and hold the teeth 41a of the lock plate 41 between the protrusion 38b on one side and the tip 39b on the other side via the cushion material 39c. The front vehicle body 2 is locked against the rear vehicle body 3 so that it cannot swing. At the same time, the caliper 43 is operated in the clamping direction using the cable, and the brakes 43c, 43c are pressed against the flange portion 42a of the pulley to clamp it, thereby operating the parking brake.

The lever 3 provided near the handle 8 in this way
The parking brake is actuated by the operation 2, and the rocking of the front and rear vehicle bodies is simultaneously locked by the same operation, and both mechanisms can be locked by a single operation. Therefore, there is no need to operate the parking brake and swing lock separately, and both can be locked at the same time with one simple operation.

By the way, if you want to move the tricycle a short distance in a garage or the like with the swing lock and parking brake locked, do the following.

That is, as shown in FIG. 7, one end of an axle 45 is loosely engaged with a shaft 44 output from a pulley 42, and a flange portion 44a forming a half of the dog clutch is provided at the end of the portion of the shaft 44 facing into the case 46. A recess 44b is formed in the end surface of the recess 44b. On the other hand, there is a recess 4 around the axle 45.
4b, and the shifter 47 has a spline portion 4 around the axle 45.
7a, etc., are integrally rotated and slidable in the axial direction, and are biased in the engagement direction by a spring 48. Therefore, under normal conditions, the shifter 47 and the output shaft 4
4 is engaged with a dog clutch as shown in FIG. 7, and the output of the output shaft 44 is transmitted to an axle 45.

A groove 47c is formed on the outer periphery of the shifter 47, and a C-shaped shift arm 49 is engaged with this groove 47c as shown in FIG. 8, and the base of the shift arm 49 is connected to one end of a neutral lever shaft 50. ing. The middle part of the shaft 50 is the case 46
A neutral lever 51 is fixed to the projecting end of the shaft 50, and the tip of this lever 51 is connected to a neutral operation cable. 52.

On the other hand, as shown in FIG. 3, a carrier handle 53 is provided at the rear of the seat 10, and the inner 52a of the operating cable 52 faces naked below and parallel to the carrier handle 53. An end of the inner 52a is connected to a part of the handle 53, an end of the outer 52b is fixed to a part of the handle 53, passes through the seat post 9, extends to the lever 51, and the end of the outer 52b is connected to a part of the handle 53.
A grip 54 is provided at the middle portion of the inner 52a facing the inner 52a, and is configured to be easy to grip.

In the above, under normal conditions, the shifter 47 is pushed by the action of the spring 48, the clutch is engaged, and in this state, the shift arm 49 is pushed in that direction, and the cable inner 52a is pulled through the shaft 50 and lever 51. , the end of which is parallel to the horizontal portion of the handle 53 (see FIG. 3). When moving the vehicle with the rocking lock of the vehicle body and the parking brake activated as described above, the grip 54 located under the handle 53 is grasped together with the horizontal portion of the grip 53, and the grip 54 is lifted as shown by the chain line in FIG. As a result, the cable inner 52a is pulled,
The lever 51 is rotated, whereby the shift arm 49 swings via the shaft 50, and moves the shifter 47 toward the disengagement direction against the spring 48 toward the axle 45.
The output shaft 44 and the axle 45 are insulated. Therefore, the rear wheels 24 are free and can be easily moved even in the above-mentioned parking lock state.
After the movement, by releasing the grip 54, the restraining force on the shifter 47 disappears, the shifter 47 performs an engaging motion, is locked, and returns to the operating state of the parking brake. Furthermore, since the operating section for neutral operation is provided on the handle section behind the seat, the act of moving the vehicle body by grasping the handle section and the act of neutral operation can be easily performed at the same time, which is extremely convenient in terms of handling. be.

9 to 14 show modified embodiments of the present invention.

The tricycle 101 consists of a front body 102 and a rear body 103. The front body 102 has a low-floor structure, with a front fender part 160 at the very front, a front part 161 that slopes diagonally backward and downward from the rear of the fender part 160, and a flat rear part 161 that extends rearward at a low position from the rear end of the front part. A floor portion 162 is provided. The floor portion 162 has a width necessary and sufficient to allow the feet to be placed on the left and right sides.

A support post 105 for a front fork 106 is installed on the front part 161 of the front vehicle body 102, and the front fork 106 is installed longitudinally on this.
I support 7. and fork 106 post 1
05 Bar handle 108 at the upper end of the upwardly extending part
A case 163 for storing and supporting a headlight and instruments is provided in this part. Further, a seat post 109 formed of a hollow cylindrical material or the like is provided upright at the rear central portion of the front vehicle body 102, and a seat 110 is attached to the upper end of this post 109.

A joint 120 is provided on the rear lower surface of the front vehicle body 102, and a rotational swing shaft 121 of the joint 120 extends rearward, and a rear subframe 123 of the rear vehicle body 103 is connected to the rear end of the shaft 121. frame 12
3, a rear fork 125 is pivotally attached to the rear fork 125 so as to be able to swing freely around a pin 126.
A drive unit 127 consisting of an engine, a transmission mechanism, etc. is mounted on 25, and the drive unit 127 is disposed between the two rear drive wheels 124 and connected to the drive wheels. In the illustrated example, the drive unit 127 is housed within the outline of the drive wheel 124, the muffler 164 is also housed within this outline, and the rear wheels 124, 124 and the drive unit 127 are covered with a rear fender member 165. ing.

In the tricycle 101 described above, the holder 166 that is located below the seat 110 and is fitted onto the seat post 109 is provided with an operating lever 132, and the operating lever 132 is connected to the upper base 132a of the holder 166.
66, and as shown in FIG. 9, it is turned off in a suspended state parallel to the seat post 109, and then swung to the right in the figure with the base 132a as a fulcrum, and lifted up. The parking brake is activated and the rocking lock is activated. The base of the lever 132 is connected to the seat post 109 and the holder 16.
The lower part of the rod 167 extends downward and reaches the joint 120.

11 to 13 are enlarged views of the joint portion including the parking brake mechanism and the swing lock mechanism.

A rotating and swinging shaft 121 is fixed to the front end of a rear subframe 123 on the rear vehicle body 103 side, and the intermediate or front portion of the shaft 121 is fitted with bearings 168 and 169 into a case 122 fixed to the rear lower surface of the front vehicle body 102. The front vehicle body 102 including the case 122 rotates and swings about the shaft 121 on the fixed side. A bulging member 170 is coupled to the front outer periphery of the shaft 121 inside the case 122, and a rubber 171 is interposed between the outer periphery of the bulging member 170 and the inner wall of the case 122, and this part constitutes a so-called Neidhardt rubber, and when the shaft 121 rotates and oscillates. functions as a restoring force for the front body of the vehicle.

A lock plate 141 is fixedly installed around the middle part of the shaft 121 inside the case 122.
1 has an engaging recess 14 at the upper end as shown in FIG.
1a, and regulating pieces 141b, 141b on both sides of the lower part.
A stopper piece 172 is provided on the case 122 side and is located in the middle in a normal posture.
22 side, that is, the front vehicle body 102, the stopper piece 172 is controlled by the regulating pieces 141b, 141.
The swing limit is regulated in contact with b.

An upwardly bulging portion 122 is provided at the rear of the case 122.
A is formed, and a rotary operation shaft 173 is installed across the upper part of the space formed by this portion 122a, one end of the shaft 173 protrudes outside the portion 122a, and an L-shaped operation link 174 is fixed to this portion. One end of a return spring 175 provided on the side surface of the portion 122a is locked to the link 174, and one end 174a of the link 174 is connected to the aforementioned operating rod 167.
and are connected by a spring 176. part 12
A release sleeve 177 is mounted on the shaft 173 in 2a.
is provided by spline fitting etc., and this sleeve 1
A pusher 178 is rotatably fitted around the center portion of the sleeve 77 in the axial direction, and one end of the pusher 178 is connected to the sleeve 177.
The release spring 179 is locked to the other end of the release spring 179. and the lower part of the shaft 173 and the shaft 121
A support shaft 180 is provided in between, and a lock pawl 1 is attached to the support shaft 180.
The base of the lock plate 81 is supported, and the claw 181 is elastically biased in the releasing direction by a return spring 182, and the claw 181a faces the engagement recess 141a of the lock plate 141 in the normal posture.
The cam portion 181b on the rear surface of the claw 181 is connected to the pusher 1.
78 and faces the tip pushing portion 178a.

In the above, the operation link 174 is shown in FIG.
In FIG. 12, the position indicated by the chain line A indicates the OFF state, and when parking the vehicle, the rod 167 is pulled by lifting the lever 132 mentioned above, and the link 174 swings via the spring 176, and the solid line indicates the off state. The ON position B is reached as shown in FIG. The shaft 173 rotates by a predetermined angle in the clockwise direction in FIG. The lock plate 181 is rotated counterclockwise in FIG. 12 against the return spring 182 as a fulcrum, and the claw portion 181a is engaged with the engagement recess 141a of the lock plate 141 provided on the shaft 121 on the rear vehicle body 103 side. This state is shown in FIG. 12, whereby the lock plate 141 of the rear vehicle body 103 on the stationary side is attached to the claw 1 of the front vehicle body 102 on the swinging side.
81 is engaged, the front vehicle body 102 is locked, and its swinging is restrained. Note that the pusher 178 is pressed and driven by the release spring 179, so the claw 181
Even if the engagement recess 141a of the lock plate 141 does not fit, the lock plate 14 is biased.
1, and by swinging the front vehicle body 102 into a normal posture, the claw portion 181a and the recessed portion 141a
will snap into place and lock.

By the way, as shown in FIG. 11, a brake link 183 is attached to the other end 174b of the operation link 174.
One end 183a of is pivotally connected via a pin 184,
The other end 183b of the link 183 is connected to an inner 134a of a brake cable 134 connected to a rear brake lever 185 of the handle 108. Also, the middle part of the link 183 is connected to the inner 1 of the rear brake cable 135 that operates the brake of the rear wheel 124.
35a, a stopper 186 is provided on the rear surface of the lower end of the link 183, and this portion is in contact with the stopper 186. By operating the brake lever 185, the cable inner 134a is pulled, and the link 1
83 swings to the right in FIG. 11 using the pin 184 at one end 183a as a fulcrum, and the cable inner 135a on the rear wheel side is pulled to the right in the diagram to perform normal braking.

By operating the operating lever 132, the operating link 17
4 swings upward and reaches the position B, locking the swinging part as described above, and also swinging the lower end 174b of the link 174 in the counterclockwise direction to lock the link 183.
Since the lower end 183b is regulated by the stopper 186, it swings rightward in FIG. 11, and as a result, the cable inner 135a is pulled rightward in the figure. In other words, the cable will be activated. Therefore, the parking brake will work. This state is the first
It is shown in Figure 1.

As described above, the parking brake is actuated by operating the lever 132, and the swinging of the front and rear vehicle bodies is simultaneously locked by the same operation, and both mechanisms can be locked by a single operation. Therefore, there is no need to operate the parking brake and swing lock separately, and both can be locked at the same time with one simple operation. Moreover, with a single operating mechanism,
The above can be done by providing an interlocking mechanism around the swinging part, and even if the swing lock is not locked, once the operation is performed, the front vehicle body 102 can be moved to the lock by swinging. can.

15 to 17 show further modified embodiments of the invention.

Lever 2 provided on the holder 266 of the seat 210
32 is connected via a cable 267 and a spring 276 to one 274a of the L-shaped links pivoted by a pin 273, and connected to the other link 274a.
74b is provided on the pin 273 and spaced apart from the other pin 274a. The relationship between the links 274a and 274b is that when one 274a swings, the other 274b moves, but when the other 274b swings, one 274a
are configured so that they are not linked. the other 274
An intermediate point of a single rear brake cable 234 that connects the rear brake device 287 and the brake lever of the handlebar is connected to the end of b. A swing regulating member 241 is provided on the rear body side, and for example, this may be a swing shaft as described above, a rear subframe, or, if a joint is provided on the rear body side, the outer part of this may be used. good. An engaging tooth portion 241a is provided on the front part of this member 241, and a lock arm 281 is provided on the front vehicle side facing the engaging tooth portion 241a.
The arm 281 has a base pivotally supported by a pin 280, and an engagement recess 281a corresponding to the tooth 241a is formed at the rear end. The lower surface of the lock arm 281 is connected by a leaf spring 282 to one of the links 274a described above.

In the above, the cable inner 234 is pulled by operating the rear brake lever provided on the handle,
Brake 287 works. In this case the other link 2
Although the link 74b swings counterclockwise in FIG. 15, one link 274a does not swing as described above, allowing normal braking operation.

When the operating lever 232 moves upward, one link 274a moves upward via the cable 267 and the spring 276, and the other link 274b also swings in conjunction with this in the braking direction, causing the brake to perform a braking operation. Link 27 of spring 282
4a side swings clockwise, and the engagement recess 281a engages with the tooth section 241a on the rear vehicle body side.
At this point, the front vehicle body is locked from swinging.
In this case, the spring 282 functions as a release spring similarly to the above embodiment.

As is clear from the above, according to the present invention, the parking brake and the vehicle body rocking lock mechanism can be activated by a single mechanism with a single operation when parking, which is rational and common operation. Since the lock is provided near the steering handle, it is advantageous in terms of space utilization, and it is also easy to operate, and there is no chance of forgetting to release the button, making it extremely practical.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is an external side view of the tricycle, FIG. 2 is a plan view of the tricycle, and FIG.
The figure is a view from the rear of the seat, Figure 4 is an enlarged view of the swing lock mechanism, Figure 5 is a partial cross-sectional plan view of the lock, Figure 6 is a front view of the lock mechanism, and Figure 7 is a parking Longitudinal cross-sectional view of the axle including the brake, No. 8
The figure is an explanatory diagram of the neutral mechanism section, Figure 9 is an external side view of the tricycle according to the modified example, Figure 10 is a plan view of the same, Figure 11 is an external view of the parking operation mechanism, and Figure 12 is a vertical sectional side view of the same. , Figure 13 is 13-1 in Figure 12.
14 is an end sectional view of the lock plate portion, FIG. 15 is a schematic explanatory view showing the main parts of a further modified embodiment, FIG. 16 is a view taken in the direction of arrow 16 in FIG. 15, and FIG. The figure is a view taken in the direction of arrow 17 in FIG. 15. In addition, in the drawing, 1 is a tricycle, 7 and 24 are wheels, and 3
2,132,232 is a parking operator, 38,39,
41, 141, 181, 241, 281 are lock mechanisms, 42a, 43, 134, 135, 183,
234 and 287 are parking brake mechanisms.

Claims (1)

[Scope of Claims] 1. A rocking tricycle with one front wheel and two rear wheels, the front body of which is swingably connected to the rear body, the rear body of which is equipped with a parking brake mechanism for braking the rear wheels. A rocking lock mechanism is provided between the front and rear bodies, which engages the front body side and the rear body side to limit the rocking of the front body. An operating element is provided, and a connecting member is interposed in series between the operating element and the swinging lock mechanism and between the swinging lock mechanism and the parking brake mechanism so that the swinging lock and the parking brake can be attached and detached by moving forward and backward. A tricycle parking device characterized by: