JP4767819B2 - Saddle riding - Google Patents

Description

  The present invention relates to a saddle-ride type vehicle such as a motorcycle or a tricycle.

Conventionally, for example, in a scooter type motorcycle (saddle-ride type vehicle), there is one in which a load receiving member is provided at the front of a vehicle body (see, for example, Patent Document 1). The load receiving member is positioned in front of the head pipe at the front end of the vehicle body frame and above the front wheel. Further, the front end of the load receiving member is positioned at the foremost end of the vehicle body and above the center of gravity of the vehicle body. When an excessive load is input from the front of the vehicle (at the time of a vehicle front collision), the load receiving member is crushed to absorb the impact and suppress the occurrence of a pitching moment that rises rearward of the vehicle body.
JP 2002-225767 A

By the way, in the saddle-ride type vehicle, since the dedicated load receiving member protrudes greatly in front of the vehicle, there is a problem that the vehicle appearance is greatly affected. Further, when the load receiving member and the object to be collided are separated by a reaction force after an excessive load is input, pitching may occur due to a moment remaining in the vehicle body.
Therefore, the present invention provides a saddle-ride type vehicle that can effectively suppress an increase in the pitching of the vehicle body when an excessive load is input from the front of the vehicle while suppressing the influence on the appearance of the vehicle.

As a means for solving the above problems, the invention described in claim 1 is directed to a saddle-ride type vehicle having a steering system support portion (6) for supporting a front wheel steering system at a front end portion of a body frame (5). A load receiving member that receives a load from the front of the vehicle and in front of the portion (6) and above the front wheel (2), and the load receiving member is movable forward when an excessive load is input from the front of the vehicle. The receiving member is supported by the steering system support portion (6) at the front end portion of the vehicle body frame via the support member (22), and is stored in the support member (22) in a state where the spring (25) is contracted. The load receiving member is moved forward by the spring force of the spring (25).

According to a second aspect of the present invention, in a saddle-ride type vehicle having a steering system support portion (6) for supporting a front wheel steering system at a front end portion of a vehicle body frame (5), the front of the steering system support portion (6) and A load receiving member that receives a load from the front of the vehicle is provided above the front wheel (2). The load receiving member is movable forward when an excessive load is input from the front of the vehicle. The load receiving member is a headlamp (21 ).

According to a third aspect of the present invention, in a saddle-ride type vehicle having a steering system support portion (6) for supporting a front wheel steering system at a front end portion of a vehicle body frame (5), the front of the steering system support portion (6) and A load receiving member that receives a load from the front of the vehicle is provided above the front wheel (2), the load receiving member is movable forward when an excessive load is input from the front of the vehicle, and the load receiving member is a front cowl. It is characterized by that.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the load receiving member is supported by a steering system support portion (6) at a front end portion of the vehicle body frame via a support member (22),
The support member (22) is formed in a pipe shape.

According to a fifth aspect of the present invention, in the second or third aspect, the load receiving member is supported by a steering system support portion (6) at a front end portion of the vehicle body frame via a support member (52), and the support member In (52), gas from the inflator can be ejected, and the load receiving member is moved forward by the pressure of the gas.

According to the invention described in claim 1, even when there is an input of an excessive load (collision load) from the front of the vehicle to the front wheels as in the case of a vehicle front collision, even when the vehicle body causes pitching that lifts the rear wheel side, The load receiving member comes into contact with the collision object and suppresses an increase in the pitching of the vehicle body, and the load receiving member moves forward even if the load receiving member tries to move away from the collision object due to the reaction force after the collision. By keeping the contact state with the collision object long, it is possible to suppress further increase in pitching of the vehicle body. Further, by maintaining the load receiving member in a state in which the forward movement is suppressed in the normal state before the collision, the presence of the load receiving member is made inconspicuous and the influence on the vehicle appearance can be suppressed.
In addition, since the load receiving member is supported by the steering system support portion at the front end portion of the vehicle body frame via the support member, the load receiving member is disposed at a position where it can easily come into contact with the collision object, and the support member is reduced in size. be able to.
Further, since the spring is stored in a contracted state in the support member and the load receiving member is moved forward by the spring force of the spring, the reaction time required for the forward movement of the load receiving member can be shortened.

According to the second and third aspects of the present invention, when the front wheel receives an excessive load (collision load) from the front of the vehicle, such as when the vehicle collides forward, and the vehicle body causes pitching that lifts the rear wheel side. However, while the load receiving member comes into contact with the collision object and suppresses an increase in the pitching of the vehicle body, even if the load receiving member tries to be separated from the collision object by the reaction force after the collision, the load receiving member is moved forward. It is possible to suppress further increase in pitching of the vehicle body by keeping the contact state with the collision object for a long time. Further, by maintaining the load receiving member in a state in which the forward movement is suppressed in the normal state before the collision, the presence of the load receiving member is made inconspicuous and the influence on the vehicle appearance can be suppressed. Then, by using the basic components provided in the saddle-ride type vehicle as a load receiving member, it is possible to reduce the number of parts by eliminating the need for setting of dedicated parts, and to maintain a good appearance of the vehicle.

According to the invention described in請Motomeko 4, since the load receiving member is supported via a support member to the steering system support portion of the body frame front end, placing the load receiving member to contact easily located in the object struck In addition, the support member can be reduced in size. Furthermore, since the support member is formed in a pipe shape, the weight of the support member can be reduced, and the moving mechanism of the load receiving member can be easily configured.

According to the fifth aspect of the present invention, since the load receiving member is supported by the steering system support portion at the front end portion of the vehicle body frame via the support member, the load receiving member is disposed at a position where the load receiving member can easily contact the collision object. At the same time, the support member can be downsized. Furthermore, since the gas from the inflator can be ejected into the support member and the load receiving member is moved forward by the pressure of the gas, the reaction time required for the forward movement of the load receiving member can be shortened.

  Embodiments of the present invention will be described below with reference to the drawings. Note that the directions such as front, rear, left and right in the following description are the same as those in the vehicle unless otherwise specified. In the figure, an arrow FR indicates the front of the vehicle, and an arrow UP indicates the upper side of the vehicle.

  As shown in FIG. 1, a front wheel 2 of a motorcycle (saddle-type vehicle) 1 is pivotally supported by a lower end portion of a front fork 3, and an upper portion of the front fork 3 is connected to a head pipe of a vehicle body frame 5 via a steering stem 4. (Steering system support portion) 6 is pivotally supported so as to be steerable. A bar handle 7 is attached on the top bridge 4 a of the steering stem 4.

  The vehicle body frame 5 includes a main frame 8 that extends rearward from the head pipe 6 and continues to the pivot portion 9. Below the main frame 8, an engine (internal combustion engine) 11 that is a prime mover of the motorcycle 1 is mounted. A fuel tank 12 is disposed above the main frame 8, and an occupant seat 13 is disposed behind the fuel tank 12. The pivot portion 9 is pivotally supported at the front end portion of the swing arm 14 so that the swing arm 14 can swing. A rear wheel 15 is pivotally supported at the rear end portion of the swing arm 14.

  The periphery of the head pipe 6 is covered with a front cowl 16, the side of the vehicle body is covered with a side cowl 17, and the rear of the vehicle body is covered with a rear cowl 18. Pannier cases 19 are provided on both sides of the rear cowl 18. A headlamp 21 is disposed at the front end of the front cowl 16 (in front of the head pipe 6 and above the front wheel 2). The headlamp 21 forms an appearance of the front of the vehicle together with the front cowl 16, and in this state the headlamp 21 The lamp 21 and the front cowl 16 are supported by the head pipe 6 via the cowl stay 22.

  Referring also to FIG. 2, the base portion of the cowl stay 22 (the portion extending between the head pipe 6 and the head lamp 21, hereinafter simply referred to as the cowl stay) is, for example, an outer tube 23 fixed to the head pipe 6, and the head lamp 21. The inner tube 24 is fixed to the inner tube 24. Each of the tubes 23 and 24 has a hollow cylindrical shape along the front-rear direction, and they are slidably fitted to each other to form the cowl stay 22.

  A coil spring 25 is stored in the cowl stay 22 in a compressed state (with a predetermined spring force), and the tubes 23 and 24 are attached to the side of the cowl stay 22 that extends in the longitudinal direction by the spring force of the coil spring 25. Be forced. In this state, for example, a protrusion 26a fixed on the inner periphery of the outer tube 23 engages with a groove 26b formed on the outer periphery of the inner tube 24, and the relative sliding positions of the tubes 23 and 24 are defined, so that the cowl stay A longitudinal length of 22 is defined (see FIG. 2A). At this time, the headlamp 21 is maintained in a state (hereinafter simply referred to as a normal state) in which the vehicle exterior of the vehicle is formed together with the front cowl 16 (refer to FIGS. 1 and 3).

  On the other hand, when the sliding of the inner tube 24 with respect to the outer tube 23 is allowed, for example, by disengaging the protrusion 26a and the groove 26b, the spring force of the coil spring 25 contracted in the cowl stay 22 is allowed. As a result, the cowl stay 22 extends forward to move the headlamp 21 forward (see FIG. 2B). The extension amount (movement amount of the headlamp 21) S of the cowl stay 22 at this time is such that the outer stopper 27a provided on the inner periphery of the outer tube 23 and the inner stopper 27b provided on the outer periphery of the inner tube 24 contact each other in the extending direction. It is prescribed by. At this time, the cowl stay 22 is held in the maximum extended state by the engagement portion 28b on the distal end side of the inner tube 24 engaging with the fixing portion 28a on the distal end side of the outer tube 23. Reference numeral 21 ′ in the drawing indicates a headlamp that has moved forward due to the extension of the cowl stay 22.

The motorcycle 1 in this embodiment has the above-described configuration. Next, the operation of the motorcycle 1 at the time of a vehicle front collision will be described.
First, when the front wheel 2 of the motorcycle 1 comes into contact with the collision object B and an excessive load is input from the front of the vehicle, the front wheel 2 tires and wheels, and the front wheel steering system such as the front fork 3 are deformed and an impact is applied. On the other hand, a pitching moment that rises rearward around the front wheel 2 is generated in the vehicle body of the motorcycle 1 to lift the rear wheel 15 side. The collision object B is movable in the collision direction of the motorcycle 1.

Next, the headlamp 21 positioned at the front end of the vehicle body above the front wheel 2 approaches the collision target B, and the front end of the head lamp 21 comes into contact with a position that is higher than the front wheel 2 collision position on the collision target B. The back-up pitching of the vehicle body of the motorcycle 1 is suppressed.
At this time, as shown in FIG. 4A, the headlamp 21 is pressed relatively rearward, and the protrusion 26 a is broken in the cowl stay 22, for example, so that the cowl stay 22 of the inner tube 24 with respect to the outer tube 23. The sliding to the extending side is allowed, and thus the head lamp 21 is allowed to move forward with respect to the head pipe 6. At this time, the headlamp 21 does not immediately move forward because the headlamp 21 contacts the collision object B.

  The motorcycle 1 pushes the collision object B forward during the interference time (contact time) with the collision object B of about 100 ms after the front collision. For this reason, the vehicle body (front wheel 2 and headlamp 21) of the motorcycle 1 tends to be separated from the collision object B. At this time, as shown in FIG. Is moved forward (i.e., toward the collision object B), so that the headlamp 21 is kept in contact with the collision object B with a predetermined spring force. Thereby, the contact time between the headlamp 21 and the collision object B is increased, and an increase in pitching due to the moment remaining in the vehicle body of the motorcycle 1 is effectively suppressed.

  As described above, the motorcycle 1 in the above embodiment includes the steering system support portion (head pipe 6) that supports the front wheel steering system at the front end portion of the vehicle body frame 5, In addition, a headlamp 21 as a load receiving member that receives a load from the front of the vehicle is provided above the front wheel 2, and the headlamp 21 is movable forward when an excessive load is input from the front of the vehicle.

According to this configuration, even when the front wheel 2 receives an excessive load (collision load) from the front of the vehicle as in the case of a vehicle frontal collision, the headlamp can be used even when the vehicle body causes pitching that causes the rear wheel 15 side to rise. When the headlamp 21 attempts to move away from the collision target B by the reaction force after the collision, the headlamp 21 moves forward. By keeping the contact state with the collision object B long, it is possible to suppress further increase in pitching of the vehicle body.
In addition, by using the basic component (headlamp 21) provided in the motorcycle 1 as a load receiving member, it is not necessary to set a dedicated component, and the number of components is reduced. By keeping the forward movement suppressed, the vehicle appearance can be kept good.

  In the motorcycle 1, the load receiving member (head lamp 21) is supported by the head pipe 6 at the front end of the vehicle body frame 5 via the cowl stay 22, so that the load receiving member becomes the collision object B. The cowl stay 22 can be reduced in size while being arranged at a position where it can be easily touched, and the reaction force from the collision object B can be effectively input to the vehicle body frame 5 to enhance the pitching suppression effect.

Further, in the motorcycle 1, since the cowl stay 22 is formed in a pipe shape, the weight of the cowl stay 22 can be reduced and the moving mechanism of the headlamp 21 can be easily configured.
Here, the coil spring 25 is stored in the cowl stay 22 in a contracted state, and the headlamp 21 is moved forward by the spring force of the coil spring 25, so that the headlamp is compared with the case where hydraulic pressure or the like is used. The reaction time required for the forward movement of 21 can be shortened.

Next, a second embodiment of the present invention will be described with reference to FIG.
The motorcycle 51 of this embodiment is different from that of the first embodiment in that a cowl stay 52 is provided instead of the cowl stay 22, and the same reference numerals are given to the same parts as in the embodiment and the description thereof is made. Is omitted.
The cowl stay 52 includes, for example, a pipe-like cylinder 53 that is fixed to the head pipe 6 side, and a piston 54 that is fitted in the cylinder 53 and is fixed to the head lamp 21 side. A gas G from an inflator (gas generator) (not shown) can be ejected into the cowl stay 52 (inside the cylinder 53), and the piston 54 is moved forward by the pressure of the gas G. Can be moved forward.

  In this embodiment, when the motorcycle 51 collides forward with the vehicle, if a rearward pitching moment is generated in the vehicle body and the headlamp 21 comes into contact with the collision target B, the rearward pitching of the vehicle body of the motorcycle 51 is suppressed. When the detection means (not shown) detects that the contact load is equal to or greater than a predetermined value, the gas G from the inflator is jetted into the cowl stay 52 as shown in FIG. The headlamp 21 moves forward, and the contact time between the headlamp 21 and the collision object B is increased to suppress an increase in pitching of the motorcycle 51. To do. The reaction speed of the inflator at this time may be adjusted as appropriate to suit the relative movement between the headlamp 21 and the collision object B.

The present invention is not limited to the above-described embodiments. For example, the load receiving member may be a front cowl or a front fender instead of a headlamp. The cowl stay may be configured to receive a load directly, and the cowl stay may be supported by the main frame.
Further, by the detection of the predetermined collision detection means, the load receiving member moves forward before the contact with the collision target, thereby obtaining a buffering action when the load receiving member after the movement contacts the collision target. You may do it. In addition, the said collision detection means is G sensor (acceleration sensor) attached to a vehicle body, for example.
And the structure in the said Example is an example of this invention, and it cannot be overemphasized that various changes are possible in the range which does not deviate from the summary of the said invention not to be limited to application to a motorcycle.

1 is a side view of a motorcycle according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of a main part of a cowl stay that supports a headlamp and the like of the motorcycle, wherein (a) shows a normal time and (b) shows a front extension time. Fig. 3 is a side view of the front part of the vehicle body of the motorcycle. It is sectional drawing which shows the effect | action of the principal part of the said cowl stay, (a) is the state in which the excessive load from the vehicle front was input into the headlamp by pitching at the time of vehicle front collision, (b) is the reaction force of the said collision. A state in which the cowl stay extends to cause the headlamp to follow the object to be separated is shown. FIG. 5 is a cross-sectional view corresponding to FIG. 4 in a second embodiment of the present invention.

Explanation of symbols

1,51 Motorcycle (saddle-ride type vehicle)
2 Front wheel 5 Body frame 6 Head pipe (steering system support)
21 Headlamp (load receiving member)
22,52 Cowl stay (support member)
25 Coil spring (spring)

Claims (5)

In a saddle-ride type vehicle having a steering system support portion (6) for supporting a front wheel steering system at a front end portion of a vehicle body frame (5),
A load receiving member that receives a load from the front of the vehicle is provided in front of the steering system support portion (6) and above the front wheel (2), and the load receiving member can move forward when an excessive load is input from the front of the vehicle. It is,
The load receiving member is supported by a steering system support portion (6) at a front end portion of the vehicle body frame via a support member (22),
The spring (25) is stored in the support member (22) in a contracted state,
The saddle riding type vehicle, wherein the load receiving member is moved forward by a spring force of the spring (25) . In a saddle-ride type vehicle having a steering system support portion (6) for supporting a front wheel steering system at a front end portion of a vehicle body frame (5),
A load receiving member that receives a load from the front of the vehicle is provided in front of the steering system support portion (6) and above the front wheel (2), and the load receiving member can move forward when an excessive load is input from the front of the vehicle. It is,
The saddle-ride type vehicle, wherein the load receiving member is a headlamp (21) . In a saddle-ride type vehicle having a steering system support portion (6) for supporting a front wheel steering system at a front end portion of a vehicle body frame (5),
A load receiving member that receives a load from the front of the vehicle is provided in front of the steering system support portion (6) and above the front wheel (2), and the load receiving member can move forward when an excessive load is input from the front of the vehicle. It is,
The saddle riding type vehicle, wherein the load receiving member is a front cowl . The load receiving member is supported by a steering system support portion (6) at a front end portion of the vehicle body frame via a support member (22),
The saddle riding type vehicle according to any one of claims 1 to 3, wherein the support member (22) is formed in a pipe shape . The load receiving member is supported by a steering system support portion (6) at a front end portion of the vehicle body frame via a support member (52),
The saddle-ride type vehicle according to claim 2 or 3 , wherein gas from an inflator can be ejected into the support member (52), and the load receiving member is moved forward by the pressure of the gas. .

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