JPH01309847A - Bumper device - Google Patents

Abstract

PURPOSE:To surely fix a bumper member by forming both end portions of the hollow section of a bumper member with mutually opposite inner and outer plates, holding the lower edge of a body between the inner and outer plates, and clamping these in a body with bolts. CONSTITUTION:In a bumper device used for a small three-wheeled vehicle, etc., a bumper member 80 having a hollow sectional form made of a band-like elastic material is provided over the whole periphery of the lower edge of a body 54. In this case, in the bumper member 80, both end portions of the hollow section are formed with mutually opposite inner and outer plate portions 84, 86. A tongue portion 88 for interposingly holding the lower end of a body 54 together with the inner face of the outer plate portion 86 is integrally formed with the lower portion of the outer plate portion 86. Bolts 90 for fixing the bumper members 80 to the body 54 are screwed on the upper portions of the plate portions 84, 86 via washers 92 and clamped with nuts 94. On the other hand, a projecting portion 96 is formed on the inner face of the bumper member 80 being opposite to the head portion of the bolt 90 to prevent the falling off the bolt 90.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a bumper device with a hollow cross section that is attached to the lower edge of the body of a small vehicle.

(Background of the Invention) As a bumper device that is attached to the lower edge of the body of a small vehicle to protect the body from impact, etc., a bumper device made of synthetic resin and having a hollow cross section is known. For example, as a bumper device with a hollow cross section that is attached to the left and right sides of the body, there is a rubber bumper member that has a closed cross section shape and is bonded to the outer surface of the bumper member with an adhesive.6However, this structure has a high adhesive strength. decreases during long periods of use,
There have been problems with the bumper falling off due to strong impacts and making it difficult to replace the bumper6.Furthermore, some bumper members have bolt mounting holes in them so that the bumper member with a hollow cross section can be bolted to the body. FIG. 6 is a cross-sectional view in this case, in which the bumper member l made of synthetic rubber is aligned with the outer surface of the lower edge of the body 2, the bolt 3 is inserted through the circular bolt mounting hole 4 formed in the bumper member 1, The bumper member 1 and the body 2 are passed through and tightened. This structure has the problem that mud, dirt, etc. tend to accumulate inside the bumper member 1 due to the presence of the bolt mounting holes 4, and the appearance is also unfavorable.

(Objective of the Invention) The present invention was made in view of the above circumstances, and it is possible to securely fix the bumper member, prevent mud or dirt from entering the bumper member, and easily replace the bumper member. An object of the present invention is to provide a bumper device that is also desirable in terms of appearance.

(Structure of the Invention) According to the present invention, this object is to provide a bumper device having a hollow cross-sectional shape that is attached to the lower edge of the pode, in which both ends of the cross section become inner and outer plate portions facing each other, and the inner flat plate portion is The bumper member is provided with a bumper member formed to be located inside the cross section, the lower edge of the pode is held between the inner and outer flat plate parts, and the bumper member is fixed to the pode with bolts passing through these parts. This is achieved by a bumper device that

(Example) Fig. 1 is a side view of an embodiment of the present invention, Fig. 2 is a plan view,
FIG. 3 is a plan view showing the frame and internal structure, FIG. 4 is a sectional view taken along the line TV-IV in FIG. 1, and FIG. 5 is a sectional view taken along the line V-V.

In FIG. 3, reference numeral 1O indicates a vehicle body frame having a pipe structure, and has a substantially rectangular shape that is long from front to back. This frame 10 has a pair of left and right lower tubes 12a, 1 passing in the front and rear direction.
2b, an outer edge tube 14 surrounding the lower outer periphery, and a pair of upper tubes 1 located substantially parallel above the lower tube 12.
6a, 16b, an intermediate tube 18 which is bent into a substantially U-shape, both ends of which are fixed to the middle of the upper tube 16, and the middle of which is fixed to the front end of the upper tube 16, and an appropriate cross member that connects these. has been done.

In this figure, reference numeral 20 denotes a front steering wheel, and a front fork 22 that holds the front wheel 20 is held by a steering shaft cylinder 24 fixed to the frame 10 so as to be rotatable left and right. A handle barrel 26 is arranged behind the steering shaft barrel 24, and a handle shaft (not shown) is held in the handle barrel 26. A handle parr 28 shown in FIG. 1.2 is fixed to the upper end of this handle shaft. The lower end of the handle shaft is connected to the front fork 22 by a link (not shown), so that the front wheel 20 rotates in conjunction with the handlebar 28.

30a and 30b are a pair of left and right rear wheels, which can be moved up and down by a lifting device (not shown). 32 is a forced air-cooled engine placed on the left side of the front wheel 20, and its rotation is transmitted to left and right drive sprockets 38a, 38b via a belt continuously variable transmission 34 and a differential gear 36. The rotation of these sprockets 38a and 38b is controlled by the chain 4.
It is transmitted to each rear wheel 30 by 0a and 40b. An exhaust pipe 42 of the engine 32 passes in front of the front wheel 20 and is led to a muffler 44 located on the right side of the front wheel 20. engine 32
The exhaust air is from this muffler 44 to the lower tube 1 on the right side.
2b is guided by a tube to the front part of this lower tube 1
2b and is discharged to the rear. 46 is a fuel tank, 48 is a lubricating oil tank, 50 is a battery, and 52 is an air cleaner attached to the upper surface of the transmission 34.

In FIG. 1.2, 54 is a podium integrally molded from synthetic resin, and includes a substantially flat floor surface 56 and this floor surface 5.
It has a front upright wall 58 and left and right upright walls 60a, 60b which are formed in a substantially box shape with a downwardly open cross section and continuously surround the front and right and left sides of the vehicle. The front wheel 20 and the engine 32
etc. are located within the front upright wall 58. The rear part of the floor surface 56 opens rearward from between the left and right standing walls 60a and 60b.

Reference numeral 62 denotes a car stop that crosses the rear opening of the podium 54 from side to side. There is. This wheel stopper 62 is rotated by the lifting device and the emergency lever 70 between the horizontal position and the lowered position shown in FIG. 1.2, and in the position shown in FIG. It enters into a recess 64 formed in 56 to enable getting on and off the wheelchair. Also this car stop 6
2 has a rubber protector 6 where the wheels of the wheelchair pass through.
6 is wrapped around it.

Grip bars 68a and 68b are attached to the upper portions of the left and right upright walls 60 of the POD 56, so that a driver seated in a wheelchair can grip them to get on and off the wheelchair. 1st
．． In Figure 2, 70 is an emergency lever protruding from the left standing wall 60a, 72 is a forward/reverse switching lever protruding from the right standing wall 60b, 74 is a headlamp, 76 is a pair of left and right direction indicator lights, and 78 is a tail light.

The elevating device that raises and lowers the rear wheel 30 is configured to change the position of the vehicle body side support end of the shock absorber that supports the rear wheel 30 using an electric motor. That is, each rear wheel 30 is held movably up and down by a rear arm whose front end is pivoted to the frame 10, and this rear arm is elastically supported by a shock absorber. The other end (supporting end on the vehicle body side) of this shock absorber is connected to a support arm that can be rotated by a motor, and the rotation of this support arm changes the support position of the support end on the vehicle body side of the shock absorber, thereby supporting the rear wheel 30. Raise and lower. As a result, the rear part of the vehicle body is raised and lowered. When the vehicle body is in the raised position, the wheel stopper 62 rises as shown in FIG. 1.2 and functions as a wheel stopper, and when the vehicle body is lowered, it enters the recess 64 and brings the rear edge of the floor surface 56 into contact with the road surface, allowing a wheelchair to get on and off. . The emergency lever 70 rotates only the wheel stopper 62 and stores it in the recess 64 while keeping the vehicle body in the raised position, thereby making it possible to get on and off the wheelchair.

Next, the bumper device of the present invention will be explained. Bumper member 8
0 is made into a band shape from an elastic material such as synthetic rubber, and the body 54 is made of an elastic material such as synthetic rubber.
It is attached to the lower edge so as to surround the outer periphery of 4. Its cross section is shaped to form a hollow space 82 inside and surround it, as shown in FIG. That is, both ends of this cross section are an inner plate part 84 and an outer plate part 86 that face each other, and the inner plate part 84 is located within the space 82.

A tongue portion 88 that sandwiches the lower edge of the body 54 with the inner surface of the external affairs plate 86 is integrally formed at the lower part of the external affairs plate 86. Numeral 90 is a bolt for fixing this bumper member 80 to the lower edge of the body 54. Two adjacent bolts 90 are connected to a long washer 92 by projection welding or the like, pass through the body 54 from the inner plate part 84 side, and the external plate part 86, and then tighten the nuts 94 from the inside of the body 54.
It is fixed at

Therefore, when installing this bumper member 80, first open the external plate part 86 to the right in FIG. The lower edges of these inner and outer panels 84.8
6, and connect the lower edge of the body 54 to the tongue portion 88 and the external plate portion 8.
6, pass the bolt 90 through the body 54,
Then, the external plate part 86 is placed over the inner surface of the body 54 and the bolt 90 is passed through it. Then, just tighten the nut 94 to the bolt 9 degrees. At this time, since the two bolts 9o are connected to each other by the washer 92, the bolt 90 does not rotate together with the nut 94.

Bolts 90 are provided on the inner surface of the bumper member 80 in this embodiment.
A convex portion 96 that protrudes toward the head is integrally formed. This convex portion 96 has the function of preventing the bolt 9o from slipping out toward the inner plate portion 84 side and falling off when the nut 94 is screwed into the bolt 9°, and improving workability for attaching and detaching the bumper 4 member 80. .

In the above embodiments, the bumper member is attached so as to surround the periphery of the resin body 54, but the present invention is not limited to the types of vehicles to which the bumper member is attached, and can of course be applied to various types of vehicles. It is.

(Effects of the Invention) As described above, the present invention provides a bumper member with inner and outer plate parts whose both ends face each other on the cross section, the inner plate part being located inside the cross section, and these inner and outer flat plate parts. The lower edge of the body is sandwiched between them, and the bumper member is fixed with bolts that pass through them from the inside of the cross section, so the bumper member can be securely fixed to the body with the bolts, and it can be easily attached and detached. Further, since there are no holes on the outer surface of the bumper member for attaching and removing bolts, there is no fear that mud, dust, etc. may accumulate inside the bumper member, and the bumper member has a desirable appearance.

[Brief explanation of the drawing]

FIG. 1 is a side view of an embodiment of the present invention, FIG. 2 is a plan view,
FIG. 3 is a plan view showing the frame and internal structure, FIG. 4 is a sectional view taken along the line IV-TV in FIG. 1, and FIG.
-VwA sectional view, and FIG. 6 is a sectional view of a conventional example. 54... Hotey, 80... Bumper member, 82...
・Space, 84...Inner plate part, 86...Outer flat plate part, 9
0...Volt. Patent applicant Yamaha Motor Co., Ltd.

Claims (1)

[Claims] In a bumper device having a hollow cross-sectional shape that is attached to the lower edge of the body, both ends of the cross-section are formed as inner and outer flat plate portions facing each other, and the inner flat plate portion is located inside the cross-section. What is claimed is: 1. A bumper device comprising: a bumper member with a lower edge of the body sandwiched between the inner and outer flat plate portions, and the bumper member fixed to the body with bolts passing through the inner and outer flat plate portions.