JPS5816945A - Vehicle drive wheel locking device - 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 drive wheel locking device for a small, lightweight motorized tricycle or other vehicle.

One of the front and rear wheels is one wheel, the other is two wheels, one of which is swingable (rolling motion) between the front body and the rear body, and which is similar to a scooter and runs on a prime mover. did.

When parking such a tricycle, a parking lock device is required for the wheels, and although automobiles are equipped with mechanical parking brake devices, small and lightweight vehicles such as those mentioned above require a parking brake in addition to a normal general brake. Attaching it is undesirable due to space issues and complicating the structure. Therefore, it is possible to operate the normal brake using a separate operation system and use it as a parking brake.
In order to firmly and reliably operate the parking brake, a relatively large operating force is required, which is not necessarily advantageous in terms of operation, and if possible, a separate parking lock mechanism should be used to securely lock the wheels when parking. Although this is desirable, it complicates the structure and is disadvantageous in terms of space.

Misfire] was made to improve the inconvenience caused by
The purpose of this is to integrate the engine, crankcase, transmission case, etc. into a unit, and transmit power from the engine to the drive shaft in a vehicle that has two drive wheels by extending the drive shaft on both sides. Zuro thread path: 1l17 (
11: An I-shaped hole A is provided, while an I-shaped hole is provided adjacent to the axis.
Rock ball command that can be freely engaged and disconnected by controlling Tsubaki A.
These gears and lock balls are installed on one side of the space, and are removably covered with a cover that forms part of the space. This can be carried out reliably in a system separate from the system, and the following can be carried out using the existing space in the concrete 1. Furthermore, in addition to achieving the above on the structural surface i'L, in order to protect the mechanism, To provide a driving wheel locking device for a vehicle which is also advantageous in terms of maintenance.

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

FIG. 1 is a schematic side view of a motive power tricycle. The tricycle 1 is divided into a front body 2 and a rear body 3, and a single steering wheel is attached to the front of the front body 2 via a front fork 4. The front fork 4 extends upward and is provided with a steering wheel 6 at the upper end, and a headlight unit 7 is installed in the middle of the handle 6, and at the rear of the front body 2. A seat post 8 is erected upward, and a seat 93- is provided at the upper end of the seat post 8. A power unit 11 is mounted on a rear frame 10-L without the main part of the rear body 3, and two rear wheels 12, which are driving wheels, are arranged on the left and right sides of this, and the power unit 11 is separated by a cover 13. It is being said.

A joint 14 is pivotally attached to the rear part of the front vehicle body 2 by a pin 15 via a boss 14a provided at the front end, and the joint 14 swings in the vertical direction using the pin 15 as a fulcrum, that is, swings. Boss portion 14 that projects upwardly at the rear
The lower end of the cushion unit 16 is pivotally connected to b, and the upper end of the unit 16 is pivotally connected to the intermediate portion of the seat post 8 of the front vehicle body 2.

The joint 14 is swingably connected to a support shaft 17 extending forward of the rear frame 10, and can pivot left and right about the support shaft 17 as a fulcrum, that is, swing freely (rolling motion). The vehicle body 2 swings left and right with respect to the rear vehicle body 3K.

Reference numeral 18 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 imaginary line front -4 = the fallen position parallel to the fork 4 is the released state. This lever 8 is connected to an operating cable 19, and therefore, by raising the lever 8 as shown in the figure, the cable is pulled. The cable 20 is attached to the upper part of the front fork 4
a, Front post section 2a.

It extends along the floor 2bVC, along the joint 14, and the rear frame 10 toward the rear wheel 12.

The power unit I-11 consists of an engine 20, a crankcase 21, and a transmission case 22 that is integrated with the engine and extends rearward.The transmission case 22 protrudes from one side of the crankcase 21 and extends rearward. The coos 22 includes a main body 23 fixed to the side of the crankcase 21 extending in the front-rear direction, and an outer cover 24 covering the outside of the main body 23, that is, the side opposite to the crankcase. There is a transmission mechanism storage space S between the side wall 23a and the cover 24.
The crankcase 21 and one side of the engine are covered with a fan cover 25, and a space S for the transmission goose 22 is provided.
A transmission mechanism is housed inside. Output shaft 2 of engine 20
6 is connected to a drive pulley 27 consisting of a variable diameter boob IJ.

A similar driven pulley 28 is provided at the rear of the space S of the case 22 by an intermediate shaft 30 via a starting crack 29, and the boo IJs 28 and 27 are connected by a V-belt 31, and the intermediate shaft 30 is formed at the rear of the main body 23. It passes through the partition wall 23b and projects outward from the side wall 23a, upward in FIG. 3, into a space S1 while being supported by a bearing 32. The space S1 is separated from the old space S, and the space S1 is opened on the opposite side to the cover 24, and the open part is connected to the end surface of the embankment part 23c and the small cover 3 which is detachable.
3, the space Sl is closed, and the protrusion 30 of the shaft 30
The a end is supported by a bearing 34 on the inner surface of the small cover 33. A gear 35 is provided on the protrusion 30a of the intermediate shaft 30,
This is meshed with the gear 36a of the adjacent transmission shaft 36,
A coaxial gear 36b is connected to a final gear 37, and the gear 37 is fixed to one side 38a of a drive shaft 38 protruding from both sides of the rear part of the case 22, and the drive shaft 38 is arranged coaxially and divided into 38a and 38b in the axial direction. During this time, the differential clutch 39 was closed, and the drive shaft 38 formed an axle and was divided into parts! 1111 Outer end IF- of p elements 38a and 38b
The rear wheels 12.12 have been removed.

'' - Li, 7 intermediate 1 (L + 30') On the outside of the gear 35 of the force section 30a, fix the Claw portion 41
lock with a, l<-le 41 with base pin 41b
The pin 41b is pivoted between the small cover 33 and the partition wall 23b.
It will be constructed in between. Link the earth part of rock pole 41 42
One end of the link 42 is pivotally connected to one end of the arm 42 with a pin 42a, and the other end of the link 42 is pivotally connected to the tip of the art 43 with a pin 42b.

It is pivotally attached to the ring 44 with a loose fit. One end of the pin 44 is
3, and the operating arm 4 is attached to the protruding portion 44a.
5 is fixed, and the arm is connected to the end of the cable 19 described above.

The base of the arm 430 includes a cylindrical shaft portion 43a, and the cylindrical shaft portion 43a
is loosely fitted into the pin 44, and the coil spring 4 is inserted around the cylindrical shaft portion 43a.
6 is wound and interposed, and one end 46a of the screw 46 is connected to the arm 43.
to be locked. Adjacent to a portion of the base 7 of the arm 43, the intermediate arm 47 is fixed to the pin 44 via its base 47a, and includes an arm portion 47b extending from the base 47a through the side edge of the base of the arm 43 and parallel to the pin 44;
In addition to the already mentioned spring 46, the irJ 46b is attached to the boom section 47b.
Lock the tip. One end 48a of a return coil spring 48, which is wound around the bottle 44 and interposed therein, is engaged with the intermediate arm 47, and the other end of the spring 48 is engaged with the cover 33 on the case side.

7 shows the released state, the cable 19 is pulled by the raising movement of the lever 18, and the pin 44 is rotated via the operating arm 45 against the return spring 48. The rotation of the pin 44 is transmitted to the spring 46 via the intermediate arm 47, and the spring 46 causes the arm 43 to swing in the counterclockwise direction in FIG. 7 with the pin 44 as a fulcrum.
2, the lock pawl 41 swings in the direction of the stopper gear 40 using the pin 41b as a fulcrum, and the claw portion 41a engages the gear 40.
This is shown in FIG. 4, and the gear 40 is thus locked, that is, the intermediate shaft 3
0 is locked, the drive system connected to this is locked, and the drive wheels 12 and 12 are cocked.By the way, when the claw 41a collides with the valley 40a of the gear 40, When the pawl and the valley cannot engage, the spring 46 provides an escape action, the pin 44 and the intermediate arm 47 can be rotated without any problem, and the drive wheel 12 moves forward or backward by the pitch of the valley. , the claw and the valley correspond, and the spring 4
The claw and the valley are engaged by the action of step 6. The spring 46 therefore has a relief effect.

The lock mechanism described above is provided adjacent to the transmission mechanism of the case and covered with a cover 33, and since the transmission mechanism is lubricated with oil, these are also lubricated, thereby preventing rust and smooth operation. In addition, since it is covered with the cover 33, it is advantageous in terms of protecting the mechanism, and the engagement between the pawl and the gear ensures reliable locking of the drive wheel. Because of this configuration, the above can be achieved with a simple structure using a transmission mechanism, a small number of parts, and an advantage in terms of space, and maintenance can be easily performed by removing the cover.

The present invention has many advantages as described above.

In the embodiment, the present invention is applied to a tricycle with one front wheel and two rear wheels, but it should be noted that the present invention can also be applied to a tricycle with front = rear wheels, and also to a four-wheeled vehicle or a two-wheeled vehicle.

[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 of a power unit, and Fig. 3 is a schematic side view of a tricycle.
The figure is a cross-sectional plan view of the same, Figure 4 is a side view of the main parts excluding the cover and is in the locked state, Figure 5 is a sectional view taken along the line 5-5 in Figure 4,
FIG. 6 is an exploded perspective view of the arm and intermediate arm, and FIG. 7 is a diagram of the main parts in the released state. In the drawings, 1 is a vehicle, 11 is a power unit, 20 is an engine, 21 is a crank case, 22 is a transmission case, 30
33 is a cover 40 is a stopper gear, and 41 is a lock pole. Patent applicant Honda Motor Co., Ltd.

Claims (1)

[Claims] In a vehicle in which the engine, crankcase, transmission case, etc. are integrated into a unit, and one drive shaft is extended on both sides to provide one drive wheel, the shaft in the system that transmits power from the engine to the drive shaft. A stopper gear is provided, and a lock pole is provided adjacent to the stopper gear so as to be freely swingable with respect to the stopper gear, and these stopper gears and lock poles are provided on one side of the case and are detachable. A drive wheel locking device for a vehicle, characterized in that it is covered with a cover.