KR101278733B1 - Shaking equipment of tricycle - Google Patents

Abstract

The vehicle body frame 2 having the front frame 3 provided with the front wheels 6 and the rear frame 4 provided with the rear wheels 7, the first cylindrical body 18 provided in the front frame, and the rear frame. A second cylindrical member 19 provided on the outer periphery or the inner circumference of the first cylindrical member, and an L-shaped first connecting portion 31 and a second connecting portion 32 respectively provided at one end and the other end thereof, and having an inner cylindrical shape. A torsion bar 33 inserted into the upper body, a first male screw 35 for holding the first connecting portion 31 of one end of the torsion bar on the front frame, and a second connecting portion 32 of the other end of the torsion bar. Is held in the rear frame, and the second male threaded body 36 is provided such that the torsion bar is twisted in response to the restoring force when the rear frame and the front frame are relatively rocked.

Description

Rocking device for tricycles {SHAKING EQUIPMENT OF TRICYCLE}

The present invention relates to a rocking apparatus for a tricycle having two rear wheels for one front wheel.

In general, a tricycle having a structure having two rear wheels for one front wheel does not incline in the direction in which the entire body frame of the tricycle is bent by two wheels when the corner is bent at a predetermined or higher speed. One of the two rear wheels rises from the road surface, and the balance of the vehicle body frame may be damaged.

Here, the vehicle body frame is divided into a front frame provided with front wheels and a rear frame provided with two rear wheels, and the rear frame is pivotably connected to the front frame. As a result, when the tricycle is bent at a predetermined speed or more, the rear frame is relatively swinged with respect to the front frame so that the balance of the vehicle body frame is not impaired.

If the rear frame is relatively rocked relative to the front frame, it is required to restore the frame to its original state. Here, in the related art, the attachment holes are fixed to the outer circumferential surface of the rear end portion of the front frame and the outer circumferential surface of the front end portion of the rear frame, respectively, and one end and the other end of the torsion bar are connected to and fixed to one attachment hole and the other attachment hole, respectively. Doing.

As a result, when the tricycle turns the corner at a predetermined speed or more, the front frame and the rear frame are relatively rocked, and the front frame is inclined, the torsion bar may be twisted by the relative rocking of these frames. The frame is returned to its original state by the restoring force of the torsion bar.

This prior art is disclosed in Patent Document 1.

Japanese Patent Publication No. 2005-199754

By the way, the said torsion bar was provided by exposing to the exterior of the front frame and the rear frame of the vehicle body frame conventionally. For this reason, the torsion bar may cause deterioration in the appearance of the vehicle body frame, or the torsion bar may get wet early due to rain water, which is undesirable in terms of quality.

An object of the present invention is to provide a torsion bar connected to the front frame and the rear frame of the vehicle body frame without exposing the torsion bar to the outside, thereby causing a deterioration in appearance or early torsion bar. It is to provide the oscillation apparatus of the tricycle which can prevent work.

The present invention is a rocking apparatus for a three-wheeled bicycle having one front wheel and two rear wheels,

A vehicle body frame having a front frame provided with the front wheels and a rear frame provided with the rear wheels;

A first cylindrical member provided in the front frame;

A second cylindrical member provided on the rear frame and provided to be rotatable on an outer circumference or an inner circumference of the first cylindrical member;

A torsion bar provided at one end and the other end with an L-shaped first connecting portion and a second connecting portion respectively inserted into a cylindrical body provided inside of the first cylindrical body and the second cylindrical body;

First connecting means for holding the first connecting portion of one end of the torsion bar to the front frame;

A second holding portion of the other end of the torsion bar on the rear frame such that the torsion bar is twisted against the restoring force by the first connecting means when the rear frame and the front frame are relatively rocked; It relates to a rocking device of a tricycle, comprising a connecting means.

According to the present invention, a torsion bar is provided inside a cylindrical body provided on the inside of a first cylindrical body provided on the front frame and a second cylindrical body provided on the rear frame and rotatably provided on the outer circumference or the inner circumference of the first cylindrical body. And one end and the other end of the torsion bar were held as the first cylindrical body and the second cylindrical body, respectively.

Therefore, since the torsion bar can be provided with little exposure to the outside, it is possible to prevent the torsion bar from deteriorating the appearance of the vehicle body frame or getting wet in the rain and prematurely call it.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view of the tricycle which shows one Embodiment of this invention.
FIG. 2 is a front view of a rocking apparatus used for the tricycle shown in FIG. 1. FIG.
3 is a perspective view of a portion provided with a stopper for preventing the first cylindrical body and the second cylindrical body of the rocking apparatus shown in FIG. 2 from relatively rocking.
4 is a cross-sectional view showing a shape in which a stopper is provided on the shaft member of the first cylindrical body.
5 is a cross-sectional view showing a state before engaging a first connecting portion of a torsion bar with respect to a first cylindrical member.
6 is a cross-sectional view showing a state before engaging a second connecting portion of a torsion bar with respect to a second cylindrical body.
Fig. 7 is an exploded perspective view showing the torsion bar, the support member and the release preventing member.

EMBODIMENT OF THE INVENTION Hereinafter, one Embodiment of this invention is described, referring drawings.

1 is a perspective view showing a tricycle 1 according to an embodiment of the present invention, which has a body frame 2. The body frame 2 is divided into a front frame 3 and a rear frame 4.

The front frame 3 has a handle 5, one lower wheel 6 is rotatably provided below the handle 5, and two rear wheels 7 are provided on the rear frame 4. It is provided to be rotatable at predetermined intervals. In the middle part of the said front side frame 3, the drive gear 9 rotationally driven by a pair of pedals 8 is provided rotatably. The rear frame 4 is provided with a driven gear 11.

A chain 12 is provided in the drive gear 9 and the driven gear 11. By rotating the drive gear 9 by the pedal 8, the rotation is transmitted to the driven gear 11 by the chain 12 and rotates. The rotation of this driven gear 11 is transmitted to one rear wheel 7 via the drive shaft 13 to which the driven gear 11 is fitted.

The pair of rear wheels 7 is rotatably provided at the other end of the pair of axles 10 in which one end is fixed to the second cylindrical body 19 described later. In the present embodiment, the rear frame 4 is configured by the second cylindrical body 19 and the pair of axles 10. It goes without saying that the structure of the rear frame 4 can be modified in various ways.

A battery case 15 incorporating a battery (not shown) is provided below the saddle 14 provided in the front frame 3. The battery provided in this battery case 15 feeds a motor (not shown) provided in the support cylinder 17.

The drive shaft 13 is rotatably supported by the support cylinder 17 so as to be rotatable. The rotation of the drive shaft 13 which is rotationally driven by the pedal 8 is assisted by the motor. That is, the tricycle 1 of this embodiment is an electric assist type.

As shown in FIG. 2, one end of the first cylindrical body 18 constituting the front frame 3 is formed at the rear end side of the front frame 3 located on the rear frame 4 side. It is connected. The first cylindrical body 18 is rearward and extends horizontally toward the rear frame 4.

The second cylindrical body 19 described above constitutes the rear frame 4, and its inner diameter is slightly larger than the outer diameter of the first cylindrical body 18. The first cylindrical body 18 is rotatably inserted into the second cylindrical body 19.

That is, the first cylindrical body 19 and the second cylindrical body 19 are provided with the second cylindrical body 19 on the outside of the first cylindrical body 18 so that they can rotate with each other. . According to this, the first cylindrical body 18 and the second cylindrical body 19 constitute a rocking device 20 for relatively swingably connecting the front frame 3 and the rear frame 4 to each other. have.

In addition, as shown in FIG. 2, the other end of the first cylindrical body 18 protrudes from the rear end of the second cylindrical body 19. That is, in this embodiment, compared with the length dimension of the 1st cylindrical body 18, the 2nd cylindrical body 19 is short.

As shown in FIG. 3 and FIG. 4, the notch part 23 opened in this tip end surface is formed in the front-end | tip part of the said 2nd cylindrical body 19 by predetermined length in the circumferential direction. A cylindrical shaft member 24 protrudes at a position corresponding to the cutout portion 23 on the outer circumferential surface of the first cylindrical body 18. A female screw 24a is formed on the inner circumferential surface of the shaft member 24.

In addition, the shaft member 24 is not cylindrical but may be solid, and it is sufficient for the female screw 24a to open to the upper end.

In the shaft member 24, a ring-shaped stopper 25 whose outer diameter is slightly smaller than the length dimension along the circumferential direction of the cutout 23 is detachably inserted. A male screw 26 is screwed into the female screw 24a of the shaft member 24 having a head portion 26a serving as a pressing member for preventing the stopper 25 from escaping from the shaft member 24.

As a result, the stopper 25 is engaged with the cutout 23, whereby the second cylindrical body 19 is prevented from rotating in the circumferential direction with respect to the first cylindrical body 18. .

That is, when the rear frame 4 having the second cylindrical body 19 and the front frame 3 having the first cylindrical body 18 do not want to swing relatively, that is, the rocking device 20 In order to lock the swinging function by), the stopper 25 may be attached to the shaft member 24. On the other hand, when the lock of the rocking function of the rocking device 20 is to be released, the stopper 25 may be removed from the shaft member 24.

That is, when the user of the tricycle 1 is an elderly person or the like, the corner is not turned while traveling at a speed at which the front frame 3 inclines with respect to the rear frame 4, that is, at a relatively high speed.

In addition, when a user such as an elderly person sits in the saddle 14 and drives, only the weight is slightly moved from side to side, and the front frame 3 swings with respect to the rear frame 4, the user moves on the saddle 14. It may damage the balance.

Therefore, in such a case, the stopper 25 is attached to the shaft member 24 as mentioned above, and the front frame 3 is made into the state which cannot be rocked with respect to the rear frame 4. As shown in FIG. Thereby, it is possible to prevent the front frame 3 from inclining while running and the user from compromising the body balance.

In addition, the tricycle 1 is usually used in a state in which the stopper 25 is separated from the shaft member 24, that is, in a state in which the rocking device 20 has a rocking function, in which the lock is released.

As shown in FIG. 5, the short pipe 27 is being fixed to the outer peripheral surface of the part of the front end side exposed from the said 2nd cylindrical body 19 of the said 1st cylindrical body 18. As shown in FIG. A through hole 18a is drilled in the circumferential wall of the portion where the short tube 27 of the first cylindrical body 18 is provided, and communicates with the inside and the outside of the first cylindrical body 18. A first female screw portion 28 is formed on the inner circumferential surface of the short tube 27.

2 and 6, one end of the L-shaped holding tool 29 is fixed to the rear end of the outer circumferential surface of the second cylindrical body 19. As shown in FIG. A short tubular retaining portion 29a is provided at the horizontal end of the retaining opening 29, and a second female screw portion 30 is formed on the inner circumferential surface of the retaining portion 29a.

The said short pipe 27 and the holding part 29a are the same position with respect to the circumferential direction of the outer peripheral surface of the 1st cylindrical body 18 and the 2nd cylindrical body 19 rotatably joined to each other, In this embodiment, FIG. As shown in FIG. 2, it is provided so that it may be located in the upper end of the circumferential direction of the 1st, 2nd cylindrical body 18, 19. As shown in FIG.

In the first and second cylindrical bodies 18 and 19, i.e., inside the first cylindrical body 18 inserted into the second cylindrical body 19, a friction coefficient is small and slips like ABS resin. The support member 41 formed in the cylinder shape whose outer diameter dimension is a little smaller than the inner diameter dimension of the said 1st cylindrical body 18 is inserted by the easy material. As shown in FIG. 7, this support member 41 is provided with a support groove 42 covering the entire length in the axial direction. That is, the support groove 42 is formed open to the outer peripheral surface.

The support member 41 inserted into the first cylindrical body 18 protrudes one end portion from the other end of the first cylindrical body 18.

In the first cylindrical member 18 inserted into the second cylindrical member 19, a straight portion 33a and one end and the other end of the straight portion 33a are made of spring steel as shown in FIG. The torsion bar 33 formed by bending the L-shaped first connecting portion 31 and the second connecting portion 32, respectively, is inserted. The torsion bar 33 supports the straight portion 33a by the support groove 42 of the support member 41, and protrudes the second connecting portion 32 from the other end of the first cylindrical body 18 to the outside. .

The torsion bar 33 in which the straight portion 33a is supported by the support groove 42 of the support member 41 has the axis of the straight portion 33a coinciding with the axis of the first cylindrical body 18. It is. That is, the depth of the said support groove 42 is set so that the axial center of the said linear part 33a may match with the axial center of the said 1st cylindrical body 18. As shown in FIG.

The first female threaded portion 28 of the short tube 27 provided on the first cylindrical body 18 and the holding portion 29a of the holding tool 29 provided on the rear end of the second cylindrical body 19 are formed. The first cylindrical member (30) has a length dimension between the second female thread portion 30 so as to be the same as the length dimension between the first connection portion 31 and the second connection portion 32 of the torsion bar 33. 18) and the second cylindrical body 19 are positioned.

Thereby, the 1st female thread 31 of the said torsion bar 33 inserted through the inside of the 1st cylindrical body 18 and the 2nd cylindrical body 19 is a said 1st female thread, as shown in FIG. A second connecting portion 32 of the torsion bar 33, which is opposite to the portion 28 and protrudes outward from the rear end of the second cylindrical body 19, is shown in FIG. The second female screw portion 30 formed on the holding portion 29a of the diaphragm is opposed to the second female screw portion 30.

The first connecting portion 31 of the torsion bar 33, which is opposite to the first female threaded portion 28 of the short tube 27, is a first male threaded body screwed to the first female threaded portion 28. It is inserted into and supported in the first support hole 35a formed to be opened to the lower end of 35).

The second connecting portion 32 is inserted and supported by a second support hole 36a formed by opening to the lower end of the second male screw body 36 screwed to the second female screw portion 30. Thereby, the said torsion bar 33 is hold | maintained by the 1st cylindrical body 18 through the 1st external threaded body 35 by the 1st connection part 31 formed in the one end side, and the 2nd connection part formed in the other end side. 32 is hold | maintained by the 2nd cylindrical body 19 through the 2nd external threaded body 36. As shown in FIG.

That is, the 1st cylindrical body 18 which comprises the oscillation apparatus 20, and the 2nd cylindrical body 19 through which the 1st cylindrical body 18 was rotatably inserted are these cylindrical bodies 18 and 19. FIG. ), The first connecting portion 31 and the first male threaded body 35 at one end of the torsion bar 33 inserted into the first cylindrical body 18, the second connecting portion 32 at the other end, and It is connected by the second male threaded body 36.

The first connecting portion 31 of one end of the torsion bar 33 and the first male screw 35 holding the first connecting portion 31 constitute a first connecting means, and the other of the torsion bar 33. The 2nd male threaded body 36 which hold | maintained the 2nd connection part 32 of the edge part and this 2nd connection part 32 comprises the 2nd connection means.

The cross section of the said support member 41 which protruded from the other end of the said 1st cylindrical body 18 is hold | maintained by the fall prevention member 43. As shown in FIG. As shown in FIG. 7, this fall prevention member 43 is formed by bending a metal plate in L shape, and the through-hole 43a is formed in the one end part.

And the said fall prevention member 43 is a said through-hole 43a when screwing the 2nd male threaded body 36 to the 2nd female-threaded part 30 of the holding part 29a of the said holding tool 29. By passing the second male threaded body 36 through, the one end of the fall preventing member 43 is pinched and fixed to the head portion of the male threaded body 36 and the end face of the holding part 29a.

As a result, the other end of the release preventing member 43 is located opposite to one end surface of the support member 41 protruding from the first cylindrical body 18, so that the support member 41 is positioned in the first direction. The escape from the cylindrical body 18 is prevented.

Moreover, the other end side of the said support member 41 is the connection part of one end of the said 1st cylindrical body 18 and the front side frame 3, or the stopper which is not shown in the inside of one end of the said 1st cylindrical body 18, etc. Movement in the axial direction is thereby prevented.

As shown by the dotted line in FIG. 1, the said back frame 4 is provided with the case 37 which can accommodate accessories.

According to the tricycle 1 of the above structure, the torsion bar 33 is held by the first cylindrical body 18 and the second cylindrical body 19. Therefore, when the tricycle 1 to run | bending turns a corner, and the front frame 3 rocked and inclined to somewhere in the left-right direction, the 1st cylindrical body 18 of the rocking | fluctuation apparatus 20 was made by the rocking | swing. Since it rotates relatively with respect to the two cylindrical body 19, the pair of rear wheels 7 of the rear frame 4 are prevented from rising from the road surface. At this time, the torsion bar 33 is twisted in response to the restoring force by the rotation of the first cylindrical body 18.

Then, when the tricycle 1 finishes bending the corner, the swinging front frame 3 swings backward with respect to the rear frame 4 by the restoring force of the torsion bar 33, and the original frame 3 swings backward. You will return to the vertical state.

The torsion bar 33 is inserted through the inside of the first cylindrical body 18 inserted into the second cylindrical body 19 and provided. And the said torsion bar 33 is provided in most parts except the edge part in which the 2nd connection part 32 was formed, without exposing to the exterior of the vehicle body frame 2. As shown in FIG.

Therefore, the torsion bar 33 not only impairs the appearance of the vehicle body frame 2, but is also prevented from soaking in rainwater and prematurely prematurely.

The said torsion bar 33 is the length which the edge part at the side of the 2nd connection part 32 protrudes from the other end of the 1st cylindrical body 18 to the outside. Therefore, in the case where the torsion bar 33 is inserted into the first cylindrical body 18 and inserted, the operator grips an end portion of the torsion bar 33 at the second connecting portion 32 side, and the first cylindrical body ( It is inserted through the other end of 18), and the 1st connection part 31 opposes the 1st female-threaded part 28 of the 1st cylindrical body 18. As shown in FIG.

Next, the support member 41 is inserted into the first cylindrical body 18, and the straight portion 33a of the torsion bar 33 is inserted into the support groove 42 of the support member 41. . As a result, the torsion bar 33 is supported such that the shaft center is substantially the same as the shaft center of the first cylindrical body 18.

When the torsion bar 33 is supported by the support member 41, the first male screw body 35 is screwed to the first female threaded portion 28, so that the first connection portion of the torsion bar 33 is formed. 31 is inserted into the first support hole 35a. Next, the second male threaded body 36 is screwed into the second female threaded portion 30 of the holding tool 29, and the second connecting portion 32 is inserted into the second supporting hole 36a.

That is, although the torsion bar 33 is inserted through the inside of the 1st cylindrical body 18, it is provided as the length which the edge part by the side of the 2nd connection part 32 exposes from the other end of the 1st cylindrical body 18. . Therefore, an operator grips this 2nd connection part 32, inserts the torsion bar 33 to the predetermined position of the 1st cylindrical body 18, and is hold | maintained by the support groove 42 of the support member 41. FIG. After that, the first connecting portion 31 and the second connecting portion 32 are attached to the first male threaded body 35 attached to the first cylindrical body 18 and the second cylindrical body 19 as described above. It can be coupled to the second male screw 36 to be.

When the torsion bar 33 is separated from the swinging device 20, the torsion bar 33 is formed by holding the end exposed to the outside of the torsion bar 33 in the reverse order to the time of attachment. 33) can be easily taken out from the inside of the first cylindrical body 18.

The torsion bar 33 inserted into the first cylindrical body 18 has a shaft center by the support groove 42 of the support member 41 inserted into the first cylindrical body 18. It is hold | maintained so that it may become substantially the same as the axial center of the said 1st cylindrical body 18.

Therefore, when the tricycle 1 bends a corner, the front frame 3 oscillates to the left and right direction, and inclines, and when the 2nd cylindrical body 19 rotated with respect to the 1st cylindrical body 18, the said Since the torsion bar 33 positions the shaft center at the rotation center of the second cylindrical body 19, the torsion bar 33 is surely twisted by the rotation of the second cylindrical body 19.

As a result, since the torsion bar 33 exerts its function reliably, when the tricycle 1 ends the corner, the swinging front frame 3 is secured by the restoring force of the torsion bar 33. It will return to its original state.

Moreover, even when the torsion bar 33 supported by the support groove 42 of the support member 41 is shaken or the straight portion 33a is shaken when returning to its original state, the torsion bar 33 is formed on the inner circumferential surface of the first cylindrical body 18. Since there is no contact, the function as the torsion bar 33 is exhibited by this.

Moreover, the said support member 41 which supported the torsion bar 33 in the inside of the 1st cylindrical body 18 is formed with the material which is easy to slide. Therefore, even when the support member 41 is pressed against the inner circumferential surface of the first cylindrical body 18 by the shaking of the straight portion 33a when the torsion bar 33 is twisted or when the torsion bar 33 is returned to its original state, the support is performed. The member 41 rotates smoothly with respect to the first cylindrical body 18 together with the straight portion 33a of the torsion bar 33, thereby preventing the function of the torsion bar 33 from being impaired. can do.

The fall prevention member 43 was provided in the rear end opening of the said 1st cylindrical body 18, and this fall prevention member 43 was made to close | close the rear opening of the 1st cylindrical body 18. As shown in FIG. Therefore, not only can the support member 41 inserted into the first cylindrical body 18 be prevented from escaping from the rear end of the first cylindrical body 18, but also the rear end side of the tricycle 1 can be prevented. Since the support member 41 inserted through the single cylindrical body 18 is not exposed to the outside, it may be said that it is favorable externally.

On the other hand, in the case where a user such as an elderly person rides the tricycle 1 having the above-described configuration without speeding up, the state in which the front frame 3 and the rear frame 4 of the body frame 2 do not oscillate with each other rides. There is an easy one.

In such a case, the stopper 25 is attached to the shaft member 24 protruding from the outer circumferential surface of the first cylindrical body 18 of the front frame 3 to screw the male screw 26 to the shaft member 24. The stopper 25 does not deviate from the shaft member 24.

The stopper 25 is coupled to a cutout 23 formed in the front end of the second cylindrical body 19 of the rear frame 4, and the first cylindrical body 18 is connected to the second cylindrical body 19. Rotation in the circumferential direction is prevented. That is, the rocking state of the front frame 3 and the rear frame 4 is locked by the swinging device 20.

Therefore, when the user is an elderly person or the like, and the front frame 3 is running at a low speed without inclining at the corner or the like, even if the user moves the weight from side to side while traveling, the front frame 3 is inadvertently Since there is no inclination, the user can use it without damaging the balance.

The torsion bar 33 has a first connecting portion 31 coupled to the first cylindrical body 18 of the front frame 3 by a first male screw 35, and the second connecting portion 32 has a rear frame ( A second male threaded body 36 is coupled to the second cylindrical body 19 of 4).

That is, the torsion bar 33 is inserted into the first cylindrical body 18 from the second cylindrical body 19, and then the first male threaded body 35 is screwed to the first connecting portion 31, and the second connecting portion The second male threaded body 36 can be assembled to (32) by a simple operation of screwing.

In the case of repair or replacement, the first and second male threads 35 and 36 can be separated by a simple operation of loosening from the first connecting portion 31 and the second connecting portion 32.

This invention is not limited to the above-mentioned embodiment, It can variously change in the range which does not deviate from the summary of invention.

For example, even if the first cylindrical member of the front frame constituting the rocking device is larger in diameter than the second cylindrical member of the rear frame, the second cylindrical member can be rotatably inserted into the first cylindrical member. good.

In this case, the rear end of the second cylindrical body protrudes from the rear end of the first cylindrical body, and a cutout portion for preventing rotation of the first cylindrical body and the second cylindrical body is formed at the rear end of the first cylindrical body. The shaft member corresponding to the cutout may be provided in the second cylindrical member.

In addition, the 1st connection means and 2nd connection means which couple | attach one end and the other end of a torsion bar to a 1st cylindrical body and a 2nd cylindrical body are not limited only to the structure of one Embodiment mentioned above, A various deformation | transformation is possible.

For example, a male screw is formed in each of the first connecting portion of one end of the torsion bar and the second connecting portion of the other end, and the female screw is screwed into the male screw to connect each female screw to the first cylindrical body and the second cylindrical body. Although it may hold | maintain respectively, the point should just be a structure which can couple | attach one end and the other end of a torsion bar to a 1st cylindrical body and a 2nd cylindrical body.

Of course, the tricycle is not limited to the electric assist type.

2: body frame 3: front frame
4: rear frame 6: front wheel
7: rear wheel 18: first cylindrical body
19: second cylindrical body 20: rocking device
23: notch 24: shaft member
25: stopper 28: first female thread
30: 2nd female thread part 31: 1st connection part
32: second connection portion 33: torsion bar
35: first male thread 36: second male thread
41: support member 42: support groove
43: fall prevention member

Claims (6)

In the rocking system of a tricycle having one front wheel and two rear wheels,
A vehicle body frame having a front frame provided with the front wheels and a rear frame provided with the rear wheels;
A first cylindrical member provided in the front frame;
A second cylindrical member provided on the rear frame and provided to be rotatable on an outer circumference or an inner circumference of the first cylindrical member;
A torsion bar provided at one end and the other end with an L-shaped first connecting portion and a second connecting portion respectively inserted into a cylindrical body provided inside of the first cylindrical body and the second cylindrical body;
First connecting means for holding the first connecting portion of one end of the torsion bar to the front frame;
A second holding portion of the other end of the torsion bar on the rear frame such that the torsion bar is twisted against the restoring force by the first connecting means when the rear frame and the front frame are relatively rocked; Includes a connecting means,
The first cylindrical body and the second cylindrical body have an inner diameter dimension and an outer diameter dimension through which the other cylindrical member is rotatably inserted into one of the cylindrical bodies,
A cutout portion of a predetermined length is formed in an end portion of the one cylindrical member located outside, and corresponds to the cutout portion of the end portion of the other cylindrical member inserted into the one cylindrical member. The shaft member is projected on the part,
The stopper is detachably mounted to the shaft member, the stopper being coupled to the cutout to limit the fluctuation of the one cylindrical member in the circumferential direction with respect to the other cylindrical member.
Oscillator of tricycle. delete The method of claim 1,
The first connecting means and the second connecting means,
A first male threaded body having a first supporting hole into which the first connecting portion of the torsion bar is inserted and locked, and coupled to the front frame to hold the first connecting portion in a non-rotatable manner to the front frame;
The second connecting portion of the torsion bar has a second supporting hole to which the locking portion is inserted and fixed, and is constituted by a second male threaded body which is coupled to the rear frame and holds the second connecting portion in a non-rotatable manner to the rear frame. Characterized
Oscillator of tricycle. The method of claim 3, wherein
A first female screw portion is formed on the circumferential wall of the first cylindrical member, and the first connecting portion of the torsion bar is inserted into the first support hole by screwing the first male screw portion to the first female screw portion. There is,
The second connecting portion of the torsion bar protrudes outward from the rear end of the second cylindrical body,
At the rear end of the second cylindrical member, a retaining tool is provided at one end thereof, and at the other end of the retaining tool, a second female screw portion is formed in which the second male screw is screwed to insert the second connecting portion into the support hole. Characterized by
Oscillator of tricycle. The method of claim 1,
One of the first cylindrical body and the second cylindrical body has a support member inserted therein so as to be rotatable in the circumferential direction inside the other cylindrical body located inward, and the other of the first cylindrical body and the second cylindrical body. A support groove for positioning and supporting a straight portion, excluding the first connecting portion and the second connecting portion of the torsion bar, inserted into the tubular body at the center of the radial direction of the other tubular body in the axial total length It is formed over
Oscillator of tricycle. The method of claim 5, wherein
One end of the supporting member protrudes toward the rear of the vehicle body frame from an opening end of the other cylindrical body located inside, and the protruding end of the support member is an L-shaped fall prevention member connected to the second connecting portion. It is held so that it does not come out of the said other cylindrical body by the other end, It is characterized by the above-mentioned
Oscillator of tricycle.

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