JPH11321737A - Automatic stand device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lock mechanism in an automatic stand by suppressing an increase in the number of part items. SOLUTION: A power transmitting system comprising a worm gear 39 of a motor 31, worm wheel 38, drive gear 37, and a driven gear 36 is provided in a case 30 constituting an automatic stand unit 20, and the driven gear 36 is provided integrally turnably in a main stand 19. The worm wheel 38 and the drive gear 37 are coaxially provided on a rotary shaft 50, and a lock cam 53 is provided turnably on the rotary shaft 50. The lock cam 53 impedes the turning of the driven gear 36 by protruding a lock part 61 in a turning locus C of the driven gear 36 by a wire 55, and the lock part, when it is released from protruding, is returned to a release position by a return spring 56, and the driven gear 36 can be turned.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic stand device for a motorcycle or a three-wheeled vehicle, and more particularly to a lock mechanism therefor.

[0002]

2. Description of the Related Art In Japanese Utility Model Publication No. 5-31027, an auto stand unit having an integrated motor is mounted on a vehicle body frame, and the driving force of the motor is transmitted to a drive gear coaxial with the worm wheel via a worm gear and a worm wheel. Further, there is shown an auto stand apparatus provided with a power transmission system for rotating a driven gear that is integrally rotated with a final shaft of a main stand by a drive gear.

Japanese Patent Application Laid-Open No. 7-69255 discloses a lock for restricting the rotation of the main stand in order to prevent another person from manually turning the main stand to the storage position in the standing position during parking. The provision of a mechanism is shown.

[0004]

By the way, the lock mechanism disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 7-69255 is provided at another place regardless of the power transmission system. Therefore, the number of parts and the number of assembly steps are increased. Therefore, a structure that can reduce the number of parts and the number of assembly steps is desired.

[0005]

[Means for Solving the Problems]

In order to solve the above-mentioned problems, a first aspect of the present invention relates to an auto stand device in which a main stand rotatably supported by a vehicle body is rotated to a storage position or a standing position by power. In the device,
A lock mechanism is provided in the power transmission system to prevent the main stand from rotating from the standing position to the storage position.

According to a second aspect, in the first aspect, the lock mechanism is housed in a unit case in which a power transmission system is housed.

[0008]

According to the first aspect of the present invention, since the lock mechanism is provided in the middle of the power transmission system, the power transmission system can be used as a part of the lock mechanism. As a result, the number of parts of the lock mechanism and the number of assembly steps are increased. Can be reduced. In addition, since the space for disposing the lock mechanism can be saved, the entire apparatus can be reduced in size, and the degree of freedom in the layout of the auto stand unit increases.

According to the second aspect, the lock mechanism is housed in the case of the auto stand unit together with the power transmission system, so that the lock mechanism is not easily tampered with from the outside.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described below with reference to the drawings. FIG. 1 is a view for explaining a locked state of an auto-stand unit according to the present embodiment, FIG. 2 is an overall side view of a scooter type motorcycle to which the present embodiment is applied, and FIG. FIG. 4 is a schematic side view of the auto stand unit, FIG. 5 is a sectional view taken along line 5-5 of FIG. 4, FIG. 6 is a sectional view taken along line 6-6 of FIG. 4, and FIG. FIG.

First, an outline of the motorcycle will be described with reference to FIG. A front fork supporting the front wheel 1 is steered by a handle 4 via a steering stem 3, and the steering stem 3 is rotatably supported by a head pipe 5 on the body frame side.

The body frame includes a head pipe 5, a main pipe 6, a rear pipe 7, and the like.
Is provided obliquely downward from the head pipe 5 to the rear along the center of the vehicle body, and its lower end is connected to a pair of rear pipes 7 on the left and right.

The rear pipe 7 extends right and left and extends substantially horizontally rearward below the floor 8, then extends obliquely upward and rearwards, further bends substantially horizontally and extends rearward, and is interconnected at the rear end. ing.

A portion of the rear pipe 7 behind the floor 8 is covered with a rear cover 9 and inside the storage box 1.
Supports 0. The storage box 10 has an opening that opens upward, and this opening is covered with a sheet 11 so as to be openable and closable.

A pair of left and right engine hangers 12 extending rearward are provided in the vicinity of a portion of the left and right rear pipes 7 bent obliquely upward from the floor 8, and rear end portions thereof are connected by a connection shaft 13. It is connected to a power unit 15 through a pair of left and right link arms 14.

The power unit 15 is of a swing type in which an engine and a transmission unit are integrated and swings about a connecting shaft 13. A rear end of the power unit 15 supports a rear wheel 16 and a cushion between a rear end of the rear pipe 7 and a cushion. They are connected by a unit 17.

Further, a stand bracket 18 is attached to the left and right rear pipes 7 at a position sandwiched between the left and right engine hangers 12, and the stand bracket 18 extends rearward from the rear pipe 7, and a main stand 19. Auto stand unit 20 that operates
Is supported.

The auto stand unit 20 moves the main stand 19 to a standing position A at the time of parking, which extends substantially vertically downward and a lower end thereof is grounded, or a storage position B at the time of traveling which extends substantially horizontally rearward, by power driving. It is made to let.

FIG. 3 is a view showing the auto stand unit 20 and the rear pipe 7 on the right side of the vehicle body without the rear pipe on the left side of the vehicle body, in order to show the support mechanism of the auto stand unit 20.

As is apparent from this figure, the stand bracket 18 has a substantially angled shape whose cross section in the vehicle width direction is open upward, and the left and right side walls 21 whose front ends are welded to the left and right rear pipes 7 and the lower part thereof. It is a rigid member made of an appropriate metal such as iron and the like, which is constituted by a bottom portion 22 connecting the spaces.

The auto stand unit 20 is accommodated inside the stand bracket 18, the left and right sides are surrounded by side walls 21, the lower part is surrounded by a bottom part 22, and the lower part is mounted on the left and right side walls 21 by a lower rubber mount. 23 and the upper part is an upper rubber mount 2
4 is connected to the stay 25.

The stay 25 is a member extending obliquely downward and rearward from the cross pipe 26 connecting the left and right rear pipes 7, and is a member which is provided solely to the right of the vehicle body in the vehicle width direction of the cross pipe 26. It is.

The main stand 19 has a pair of left and right leg brackets 28 which are integrally and rotatably connected to a final shaft 27 of the auto stand unit 20. One of the leg brackets 28 is returned from the auto stand unit 20 by a return spring 29. And a toggle between them.

Next, the structure of the auto stand unit 20 will be described. As shown in FIG. 4, the auto stand unit 20 has a motor 31 attached to a front portion of a case 30 and integrated therewith. A boss 32 of a lower rubber mount 23 is provided at a lower portion, and a boss 33 of an upper rubber mount 24 is provided at an upper portion. Each is provided.

A solenoid 34 is attached to the case 30 at a position near the motor 31, and a fan-shaped (see FIG. 1) driven gear 36 supported on the final shaft 27 via a fork 35 slides on the final shaft 27. I am free to move.

A drive gear 37 meshing with the driven gear 36 is provided coaxially with a worm wheel 38. The worm wheel 38 is driven to rotate by a worm gear 39 provided on an output shaft 31a of the motor 31 (FIG. 6). The output shaft 31a is disposed in a direction orthogonal to the final shaft 27 (FIG. 6).

As shown in FIG. 5, both ends of the final shaft 27 in the axial direction are rotatably supported by the bosses 40 of the case 30, and non-circular different diameter portions 41 formed at both ends in the axial direction. By fitting into a different diameter hole 42 formed in a shape corresponding to the leg bracket 28, the leg bracket 28 is rotatable integrally with the leg bracket 28.

The leg bracket 28 is fastened by a washer 43 and a bolt 44 to a mounting hole 45 provided with a female screw provided in the axial center of the final shaft 27. It is sufficient that the non-circular portion 41 has a non-circular shape, and various shapes such as a square shaft and the like can be used in addition to a substantially elliptical shape as shown in the figure.

A spline groove 46 is formed in the outer peripheral portion of the final shaft 27 in the axial direction. The boss 47 of the driven gear 36 is slidably engaged with the spline groove 46, and the driven gear 36 can rotate integrally with the final shaft 27. And spring 4
8 is free to move in the axial direction.

A rotary shaft 50 integrally formed with a drive gear 37 in which the driven gear 36 meshes is rotatably supported at one end by a ball bearing 51 and at the other end by a needle bearing 52 to the case 30 and is driven by a drive shaft. A worm wheel 38 is mounted between the gear 37 and the ball bearing 51 so as to rotate integrally.

The position of the drive gear 37 is shifted in the axial direction so as to be in a non-meshed position with the driven gear 36 (FIG. 1) when not in operation. The driven gear 36 is opposed to the spring 48 by the fork 35 as described later. It is designed to engage when moving in the axial direction.

A lock cam 53 is rotatably provided between the drive gear 37 on the rotary shaft 50 and the needle bearing 52, and is rotatable between a lock position and a release position by a wire 55.

A return spring 56 composed of a coil spring is wound around the rotation shaft 50 via a collar 54, and the return spring 56 urges the lock cam 53 to rotate toward the release position. One end of the return spring 56 is provided with an engagement hole 30 a provided in the case 30.
(FIG. 5), and the other end is locked to the lock cam 53.

As shown in FIG. 6, the fork 35 has one end engaged with the boss 47 of the driven gear 36,
The other end is connected to a plunger 57 which moves forward and backward by the solenoid 34.
8 and is rotatable about a fulcrum 59 in accordance with the reciprocating operation of the plunger 57.

That is, when not in operation, the solenoid 34 is demagnetized and the plunger 57 is extended, and the boss 47 of the driven gear 36 is
Since the fork 35 is urged away from the drive gear 37, the fork 35 rotates clockwise around the fulcrum 59, and the boss 47 of the driven gear 36 moves to a position near the shaft end of the final shaft 27. .

In operation, the solenoid 34 is excited and the plunger 57 is retracted, so that the fork 35 rotates counterclockwise in the figure around the fulcrum 59, and the boss 47 of the driven gear 36 resists the spring 48. Then, it moves on the final shaft 27 so as to approach the drive gear 37, so that the driven gear 36 eventually meshes with the drive gear 37.

As shown in FIGS. 1 and 7, the lock cam 53 is a substantially C-shaped member as viewed from the axial direction of the rotary shaft 50, and has a connecting projection 60 of a wire 55 at one end in the circumferential direction. The other end forms a lock portion 61, and when locked (FIG. 1), protrudes into the tooth portion rotation locus C of the driven gear 36 to abut on the driven gear 36 to prevent rotation.

The lock portion 61 is set so as to be out of the rotation locus C at the time of release (FIG. 7). The missing portion of the lock cam 53 located near the lock portion 61 is a portion located near the outside of the tooth portion rotation locus C of the driven gear 36 at the release position.

At the center of the outer peripheral portion of the lock cam 53, there is provided a stopper protrusion 62 which protrudes outward in the rotation radial direction.
At one end thereof, is movable in an arc-shaped groove 63 formed on the case 30 side, and comes into contact with a release-side stopper 64 formed at an end of the arc-shaped groove 63 at the release position. ing. (FIG. 7). The coupling protrusion 60 is also movable in another groove 65 formed on the case 30 side, and comes into contact with a lock-side stopper 66 formed on an end of the groove 65 when locked. (FIG. 1).

The wire 55 extends upward through a cylindrical guide 67 (FIG. 4) protruding from the case 30, further enters the storage box 10 beyond the rear pipe 7, and is provided with a lever (not shown). , And can be operated by opening the seat 11 and putting a hand into the storage box 10.

Next, the operation of this embodiment will be described. As shown in FIG. 1, in the upright position A of the main stand 19, the driven gear 36 is in a position where it is rotated clockwise most. When the solenoid 34 is demagnetized and the fork 35 is deactivated, the drive Gear 3
7 has returned to the non-meshing position (FIG. 5).

To leave the vehicle in this state, the seat 11
Is opened and the wire 55 is pulled by the operation lever in the storage box 10, the lock cam 53 rotates clockwise from the position shown in FIG. 1, the state shown in FIG. 1 is reached, and the lock portion 61 protrudes into the rotation locus C.

Thus, when the main stand 19 is locked at the standing position A and the main stand 19 is manually rotated to the storage position B in this state, the driven gear 36 abuts on the lock portion 61 and the rotation is performed by the lock portion 61. Since the rotation is blocked, the rotation to the storage position B becomes impossible.

Therefore, if the user closes the seat 11 and locks the seat 11 with a seat lock (not shown) provided in advance so as not to open the seat 11 and then leaves the vehicle, another person automatically stores the main star 19 in the storage position B. And the vehicle cannot run.

On the other hand, to release the locked state of FIG.
When the seat lock is released by an ignition key or the like, the seat 11 is opened, the hand is put into the storage box 10, the operation lever is operated to the release side, and the wire 55 is loosened. 1
When the stopper projection 62 comes into contact with the release-side stopper 64 from the lock position of FIG. 7, the release position of FIG. 7 is reached, and the lock portion 61 comes out of the rotation locus C.

As a result, the driven gear 36 is free to rotate integrally with the final shaft 27 without being restricted by the lock cam 53. If the main stand 19 is manually moved down to the storage position, the main stand 19 is moved together with the driven gear 36 as shown in FIG. Is rotated in the counterclockwise direction, and when the storage position B of FIG. 7 is reached, the return spring 29 holds the storage position B.

When the main stand 19 is to be powered up from the storage position B, when a stand switch is turned on by a handle or the like, the solenoid 34 is excited to operate the fork 35 and the driven gear 36 is moved by the spring 4.
8 on the final shaft 27 toward the other end in the axial direction.

As a result, the driven gear 36 is brought into the meshing position with the drive gear 37, and at the same time, the motor 31 is driven and rotated, and the drive gear 37 is rotated via the worm gear 39 and the worm wheel 38, whereby the driven gear 36 is rotated clockwise in FIG. The main stand 19 is erected by being turned in the direction.

When the rotation limit is reached, the driving of the motor 31 is stopped, the solenoid 34 is demagnetized and the fork 35 is deactivated, and the driven gear 36
The main stand 19 is returned to the upright position A by the return spring 29.

At this time, the load change due to the weight of the vehicle body applied to the auto stand unit 20 is reduced by the lower rubber mount 2.
3 and by the upper rubber mount 24.

As described above, according to the present embodiment, since the lock cam 53 is provided on the rotary shaft 50 in the middle of the power transmission system in the auto stand unit 20, the increase in the number of parts can be minimized even if the lock mechanism is provided. The number of parts and the number of assembling steps can be reduced and the installation space can be saved as compared with the case where a lock mechanism is provided separately from the power transmission system. Is also increased.

Further, since the lock mechanism is housed in the case 30 together with the power transmission mechanism of the auto stand unit 20, it is difficult for the lock mechanism to be tampered with from the outside.

The present invention is not limited to the above-described embodiment, but can be variously modified. For example, the operation of the lock cam is not limited to a wire, and a known means such as a solenoid can be applied. Further, the present invention can be applied to not only motorcycles but also motorcycles.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a locked state of an auto-stand unit according to an embodiment.

FIG. 2 is an overall side view of the scooter type motorcycle to which the embodiment is applied.

FIG. 3 is a diagram showing an attached state of an auto stand unit.

FIG. 4 is a schematic side view of an auto stand unit.

FIG. 5 is a sectional view taken along line 5-5 of FIG. 4;

FIG. 6 is a sectional view taken along line 6-6 of FIG.

FIG. 7 is a view corresponding to FIG. 1, illustrating an unlocked state.

[Explanation of symbols]

7: Rear pipe, 15: Power unit, 18: Stand bracket, 19: Main stand, 20: Auto stand unit, 27: Final axis, 30: Case,
36: driven gear, 37: drive gear, 38: worm wheel, 39: worm gear, 50: rotating shaft, 5
3: Lock cam, 55: Wire

Claims (2)

[Claims] 1. An auto-stand device in which a main stand rotatably supported by a vehicle body is rotated by a power to a storage position or a standing position, wherein the main stand is moved from a standing position to a storage position in a power transmission system. An auto-stand device comprising a lock mechanism for preventing rotation. 2. The system according to claim 1, wherein said lock mechanism is housed in a unit case in which a power transmission system is housed.
The auto stand device described in the above.