JPH062476B2 - Tricycle - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a three-wheeled bicycle including front steering wheels and at least one pair of left and right rear wheels for driving.

[Conventional technology]

Conventionally, in such a three-wheeled bicycle as described above, the steering handle and the saddle are fixedly arranged in the forward running state, respectively, and in practice, it is only possible to run with the occupant riding in a forward facing posture. there were.

[Problems to be solved by the invention]

However, in general, as a use of a bicycle, in addition to simply traveling by one person, for example, carrying a large baggage, carrying a child, or attaching various attachments to perform various tasks. In contrast to the fact that it is used for entertainment, the conventional three-wheeled bicycle as described above is excellent in drivability at a relatively high speed in a single riding state or a state in which small luggage is loaded, but There is still room for improvement in terms of multipurpose use.

The object of the present invention is to provide a front wheel 1 and a rear wheel 2 by rational improvement.
The purpose of the present invention is to provide a three-wheeled bicycle with excellent versatility and versatility by fully utilizing the three-wheeled structure of the wheels and exhibiting functions suitable for each purpose.

[Means for solving problems]

The characteristic configuration of the three-wheeled bicycle according to the present invention is that the steering wheel and the saddle are integrated through a subframe other than the Meny frame integrally equipped with the steering front wheel and the pair of left and right rear wheels, and The sub-frame is configured to be attachable to the main frame in two states in which the front-rear direction is changed around the longitudinal axis, and the steering handle on the sub-frame side is located closer to the front wheel side than the saddle. A first interlocking mechanism that interlocks and connects the steering handle and the front wheels in the forward steering posture, and operates in the rearward steering posture in which the steering handle on the subframe side is located closer to the rear wheel than the saddle. A second interlocking mechanism for interlocking the steering wheel and the front wheel is provided, and the first interlocking mechanism and the second interlocking mechanism are selectively switchable between the interlocking operating state and the non-operating state. Setting It has the following effects and effects.

[Action]

That is, only by changing the direction of the steering wheel and the saddle in one direction and the operation of switching the first interlocking mechanism and the second interlocking mechanism, the rear two wheels can be moved forward and backward while the occupant is riding in the frontal posture. As a result, it is possible to selectively express the state in which the passenger is traveling.

Therefore, when traveling alone, or when loading small luggage on the front or rear of the vehicle body, it is possible to take full advantage of the high speed in the forward riding state as before, and always keep an eye on it. If you have a wide luggage or infant that cannot be loaded, or if you equip it with various attachments for work or entertainment, you should carry a large luggage, infant or attachment with two rear wheels. When the vehicle is positioned at the rear of the vehicle body, the rear wheels can be stably driven in a rearward riding state in which the front wheels are used as the front wheels, and in a state where the on-board equipment is in a good eye.

〔The invention's effect〕

As a result of the above, a convenient three-wheeled bicycle that is extremely versatile and capable of exhibiting the functions suitable for each purpose by a simple switching operation while fully utilizing the original three-wheeled structure.

〔Example〕

 Next, an embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 1 and FIG. 2, a front wheel (1) for steering and a pair of left and right rear wheels (2A), (2B) are provided on a vehicle body frame mainly made of pipe material. , Brake lever
Steering handle (4) with (3) attached, height-adjustable saddle (5), rear cargo bed (6), and pedal (8) linked to the chain (7) to the left and right rear wheels (3) ) Is equipped, and thus a three-wheeled bicycle is configured.

As shown in FIGS. 1 to 4, front and rear wheels (1), (2A), (2B), a luggage carrier (6), and pedals are included in the vehicle body frame.
For the mainframe (9) equipped with (8), handle
(4) The subframe (10) with the saddle (5) attached can be freely rotated around the longitudinal axis (P) in the front and rear center of the vehicle body, and the rotation and extraction can be fixed by the lock (11). As shown in FIG. 1, the handle (4) and the saddle (5) are rotated forward and backward as shown in FIG. 3 by pivoting the subframe (10). It is configured so that the direction can be integrally changed.

In the figure, (12) is the sub-frame due to the engagement with the lock (11).
It is a hole for positioning (10) in each of the forward traveling posture and the backward traveling posture.

As shown in FIG. 5 and FIG. 6, in the steering operation configuration, the steering axis (Q) is attached to the main frame (9).
The first steering arm (14) is integrally connected to the rotary shaft portion (13A) of the front wheel support frame (13) rotatably supported around the front wheel support frame in the forward traveling posture.
The rotating shaft portion (4A) of the handle (4) rotatably supported by the sub-frame (10) by being arranged so as to be concentric with the rotating shaft portion (13A) of (13) has a second and a third structure. Steering arm (15),
(16) are integrally connected to each other, and further, the first and second relay arms (17) and (18) are freely rotatable around the vertical axis (P) on the rotary shaft portion of the subframe (10). It is attached to.

Then, in the forward running posture as shown in FIG. 5, the left and right ends of the first steering arm (14) and the left and right ends of the first relay arm (17) are connected by the first link (19), and , The left and right ends of the third steering arm (16) and the left and right ends of the second relay arm (18) are always linked by the second link (20), and the left and right sides of the first steering arm (14) are The other end side and the left and right other end sides of the second steering arm (15) are interlockingly connected, and the left and right one end sides of the second relay arm (18) which are horizontally reversed in the state of the backward running posture as shown in FIG. And a pin (21) which can be freely inserted and removed and which is also used for interlocking connection with the left and right ends of the first relay arm (17).

That is, in the forward running posture, the first steering arm (14) and the second steering arm (15) are released in a state where the first relay arm (17) and the second relay arm (18) are disengaged from each other. The steering wheel (4) and the front wheel (1) are directly linked by connecting the steering wheel with the pin (21), and in the state of the rearward traveling posture, the first steering arm
Pin the first relay arm (17) and the second relay arm (18) with the interlocking of the (14) and the second steer arm (15) is released.
By interlocking connection with (21), handle (4) and front wheel
(1) is linked via the first and second links (19), (20).

In addition, even in the state of the backward running posture, the handle (4)
It goes without saying that there is an interlocking relationship in which the operating direction of the vehicle body and the steering direction of the vehicle body coincide.

As shown in FIG. 7, in the main frame (9), a rear portion (9B) of a frame type frame structure for supporting the rear wheels (2) and a main portion (9A) of a front single pipe structure. Via a pivotal connection structure (22) so that they can rotate relative to each other about a set range about the front-rear axis (R), whereby a pair of left and right rear wheels (2) have a rolling function for the main body of the vehicle body. It is equipped with.

In addition, in the pivot support structure (22) for the rolling function, a lock pin (23) which can be operated to switch between rolling and withdrawing is attached, and the lock pin (23) is attached to the wire. The lever (2
5) is attached to the handle 4 so that the rolling permitted state and the rolling blocked state can be easily switched at hand even during traveling.

In order to configure the drive structure, the rear wheel drive shaft (26) is supported laterally across the rear end of the main frame (9A) and the rear side part (9B) of the main frame. )
And the wheel (2B) after idling on the left and right sides of the rear side part (9B) of the main frame.
Chain sprocket (27) for interlocking with chain (7)
Through a ratchet mechanism (28) that acts so that the sprocket (27) and the drive shaft (26) are in an interlocking state only when the passenger steps on the pedal (8) to the forward side in the forward running posture. It is mounted on the drive shaft (26).

Then, the shift member (29) which is always rotated integrally with the drive shaft (26)
Is attached to the drive shaft (26) so as to be slidable in the axial direction thereof, and the shift member (29) and the boss portion (27A) of the chain sprocket (27) constitute a bite clutch (30). At the same time, the detachable beta pin (31) for selectively fixing the shift member (29) at the sliding position where the interlocking clutch (30) is in the interlocking state and the sliding position where the interlocking clutch (30) is not in the interlocking state is selected. )
Is provided.

In other words, when riding in the forward running posture, the ratchet mechanism (28) is operated by leaving the interlocking clutch (30) in the non-interlocking state by operating the shift member (29) and the beta pin (31). In order to be suitable for high speed running, the normal rotation side idle rotation of the rear wheel (2A) after driving is allowed during the pedal stopped state and the pedal reverse rotation operation. or,
When riding in the backward running posture in which the forward and reverse directions of the pedal (8) are opposite, by similarly operating the shift member (29) and the beta pin (31), the interlocking clutch (30) is brought into an interlocked state. The chain sprocket (27) and the drive shaft (26) are integrally rotated regardless of the forward rotation and the reverse rotation, so that both forward traveling and backward traveling can be performed particularly suitable for low speed work traveling.

In the figure, (32) is a rear wheel supporting frame that is connected to the rear side portion (9B) of the main frame (9), and (U) allows bending of the drive shaft (26) during rolling. It is a universal joint.

As shown in FIG. 3, a pair of left and right rear wheel support frames
An attachment connection bracket (33) is fixed to each of the (32), and various work attachments such as the lawn mowing device (A), the soil dumping plate, and the seed sowing device are fixed in the backward running posture. It is mounted on the front side of the vehicle body in a rearward traveling posture so that various traveling work can be performed.

Further, as shown in FIG. 3, the rear wheel supporting frame (32) on the rear wheel (2A) side can be used to equip the rear wheel support device (B) for the rear wheel (2A). And
As a result, it can be used as a health trim machine with the stand (34) standing upright in the backward running posture.

In the figure, (35) and (36) are the speed meter and timer used when used as a health trim machine, and the speed meter (35) is the power for speed detection installed in the bearing part of the rear wheel drive shaft (26). It is linked to the take-out mechanism (36).

[Another embodiment]

 Next, another embodiment of the present invention will be described.

Various modifications can be made to the specific frame structure and operation structure for integrally changing the steering handle (4) and the saddle (5) to the forward traveling posture and the backward traveling posture, It is not limited to the structure of the above embodiment.

The respective specific configurations of the mechanism that interlocks the handle (4) and the front wheels (1) in the forward traveling posture, and the mechanism that interlocks the handle (4) and the wheels (1) in the rearward traveling posture, Various configuration changes are possible, such as adopting a wire interlocking configuration instead of adopting the direct connection interlocking configuration or the link interlocking configuration as in the above-described embodiment. The various types of interlocking configurations are collectively referred to as the forward running posture. The first interlocking mechanism is referred to as the first interlocking mechanism, while the rearward traveling posture is referred to as the second interlocking mechanism.

Further, a specific switching operation configuration for selectively switching the first interlocking mechanism and the second interlocking mechanism between the interlocking operating state and the non-interacting state with switching between the forward traveling posture and the backward traveling posture. Can also be variously modified.

In order to enable forward drive in each of the forward traveling posture and the backward traveling posture, instead of the configuration using the bite clutch (30) as in the above-mentioned embodiment, for example, a pedal
A switching mechanism for reversing the power transmission direction may be provided in the interlocking mechanism of (8) and the drive wheel (2).

The configuration for detachably mounting various attachments for work, entertainment, or sports can be changed in various ways.

Furthermore, in order to more effectively bring out each of the high-speed traveling function and the low-speed work traveling function, a multi-stage shift structure may be adopted.

[Brief description of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is an overall side view in a forward traveling posture, FIG. 2 is an overall plan view in the same posture, and FIG.
FIG. 4 is an overall side view in a backward traveling posture, FIG. 4 is a partially cutaway enlarged view of a structure for changing the orientation, and FIG. 5 is an exploded perspective view showing a steering system interlocking state in a forward traveling posture. FIG. 6 is an exploded perspective view showing the interlocking state of the steering system in the backward running posture,
FIG. 7 is an enlarged bottom view showing the drive configuration. (1) …… Front steering wheel, (2) …… Rear wheel, (4) …… Handle,
(5) …… Saddle.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mikio Okuyama 64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubota Iron Works Co., Ltd.Sakai Works (72) Masaki Orimoto 64, Ishizukitamachi, Sakai City, Osaka Kubota Iron Works Co., Ltd. Company Sakai Factory (72) Inventor Kunio Kawakami 64 Ishizukita-cho, Sakai City, Osaka Prefecture Kubota Iron Works Co., Ltd.Sakai Factory (72) Inventor, Moto Nishio 64, Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Iron Works Co., Ltd. (72) Inventor Toshimi Otori 64 Sakai City, Sakai City, Osaka Prefecture Kubota Iron Works Co., Ltd.Sakai Factory (72) Inventor Tadashi Nakao 64 Ishizu Kita Town, Sakai City Osaka City, Sakai Factory (72) Inventor Yoshikazu Harima 64 Ishizukita-machi, Sakai-shi, Osaka Prefecture Kubota Iron Works Co., Ltd.Sakai Works (72) Inventor Masaji Izuhara Ishizukita-machi, Sakai-shi, Osaka Prefecture 64 Kubota Iron Works Co., Ltd.Sakai Factory (72) Inventor Kogo Nakaya 64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubota Iron Works Co., Ltd.Sakai Factory

Claims (1)

[Claims] 1. A three-wheeled bicycle comprising a steering front wheel (1) and a pair of left and right rear wheels (2A), (2B) for driving, the steering front wheel (1) and the left and right wheels. The steering handle (4) and the saddle (5) are integrated via the subframe (10) separately from the main frame (9) integrally equipped with a pair of rear wheels (2A) and (2B). Together, the sub-frame (10) is configured to be attachable to the main frame (9) in two states in which the front-back direction is changed around the vertical axis (P), and further, the sub-frame (10) side Steering handle (4)
A first interlocking mechanism for interlockingly connecting the steering handle (4) and the front wheel (1) in a forward steering posture positioned closer to the front wheel (1) than the saddle (5), and the sub-frame (10). ) Side steering handle (4) is located closer to the rear wheels (2A) and (2B) than the saddle (5) is in the rearward steering posture.
A second interlocking mechanism for interlockingly connecting (4) and the front wheel (1) is provided, and the first interlocking mechanism and the second interlocking mechanism are selectively switched between the interlocking working state and the non-working state. A three-wheeled bicycle that can be operated freely.