JPS6216871B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a safety device attached to a hydraulic generator attached near the handle grip of a bar handle of a motorcycle or the like.

In motorcycles equipped with hydraulic brakes, the hydraulic pressure generator for the front wheel brake is usually mounted near the handle grip of the bar handle. This hydraulic pressure generator includes a reserve tank that stores brake oil and a master cylinder that generates hydraulic pressure. Since this reserve tank and master cylinder are installed near the driver in the direction of travel, there is a risk that part of the driver's body will be hit by the motorcycle in the event of a fall or collision, which is not desirable from a safety standpoint. .

This invention was made in view of the above circumstances, and is designed to prevent vehicles such as motorcycles that are equipped with a hydraulic generator having a reserve tank and a master cylinder near the handle grip of the bar handle, in the event that the vehicle falls over or collides with the vehicle. The object of the present invention is to provide a safety device for a bar handle that can protect the driver's body even if part of the driver's body hits this hydraulic pressure generator.
According to the present invention, the object is to provide a bar handle in which a hydraulic generator having a reserve tank and a master cylinder is provided on the side opposite to the driver near the handle grip, so that the upper and lower sides of the hydraulic generator are approximately equally raised and lowered from the handlebar. At the same time, a buffer pad is attached to the driver side fitting of the hydraulic generator, and the edge of the buffer pad is sandwiched between the interface between the hydraulic generator and its fitting. This is achieved by the featured bar handle safety device. The present invention will be explained in detail below based on the drawings.

Fig. 1 is a rear view showing an embodiment of the present invention, Fig. 2 is a plan view, Fig. 3 is a front view, and Figs. FIG. 6 is a cross-sectional view and a perspective view of a fixture for attaching the buffer pad.

In these figures, numeral 1 is the handlebar, 2
3 is an accelerator grip as a handle grip attached to one end of the handlebar 1, and 3 is a switch box. The switch box 3 includes a turn switch 4 for blinking a direction indicator light (not shown), a beam switch 5 for a headlight (not shown), and a horn switch 6 (not shown). The accelerator grip 2 is rotatably attached to the handlebar 1,
The rotation is converted through a mechanism (not shown) in the switch box 3 when the accelerator wire 7 moves forward or backward.

Reference numeral 10 denotes a hydraulic pressure generator, which generates control hydraulic pressure for a hydraulic front wheel brake (not shown). This hydraulic generator 10 includes a brake lever 11, a master cylinder 12, a reserve tank 13, and a fitting 14. The master cylinder 12 and the reserve tank 13 are integrally formed of aluminum alloy casting. As is clear from FIGS. 1 and 5, the brake lever 11 is mounted on a support shaft 1 so as to rotate on a plane passing approximately through the center line of the handlebar 1.
4. master cylinder 12
is arranged parallel to the handlebar 1 at a position below the plane in which the brake lever 11 rotates, and the reserve tank 13 is located above the master cylinder 12. One end of a push rod (not shown) that pushes a piston 15 (see FIG. 4) in the master cylinder 12 projects toward the switch box 3, and the tip of a bolt 16 provided on the brake lever 11 is in contact with this projecting end surface. Therefore, when the brake lever 11 is gripped, the bolt 16 pushes the piston 15 via the push rod, generating hydraulic pressure. Note that the play of the brake lever 11 can be adjusted by rotating the bolt 16 and moving it forward and backward.

The reserve tank 13 has an oil chamber 17 that is open at the top.
and a cover plate 18 that closes the opening of this oil chamber 17, and this cover plate 18 is attached with four screws 19. The oil in the oil chamber 17 communicates with the master cylinder 12 through a communication hole 20, and a float 21 is floated on the surface of the oil to prevent the oil from rippling. A circular transparent plate 22 is fitted into the side wall of the oil chamber 17, and the amount of oil inside can be checked from here. The hydraulic pressure generated by the master cylinder 12 is guided to a front wheel brake (not shown) through a flexible pipe 23.

The hydraulic generator 10 configured as described above is installed with the handlebar 1 interposed between the fitting 24 and the fitting 24. That is, the master cylinder 12 and the reserve tank 13 that are integrally formed,
From the front of the vehicle (anti-driver side), and the mounting bracket 24
grip the handlebar 1 from the rear (driver's side) of the vehicle body, and their mating surfaces 25 are approximately vertical. Here, the hydraulic generator 10 is mounted so that its upper and lower sides protrude substantially evenly upward and downward from the handlebar 1. As shown in FIG. 6, the attachment 24 consists of a pair of fastening members 26, 26, and connecting rods 27, 27 that connect both ends of these members and are parallel to the handlebar 1. The tightening member 26 is formed with a semicircular notch 28 that contacts the handlebar 1 and through holes 30, 30 into which a hexagonal notched bolt 29 is inserted. The connecting rods 27, 27 are connected to the mating surface 2.
5 so that a gap is formed between them.

Reference numeral 40 denotes a buffer pad, which is made of an elastic material such as rubber and is formed to cover the outside of the fixture 24 along its longitudinal direction (the longitudinal direction of the handlebar 1), and its cross section is octagonal with its apex. It has a shape that looks like it is divided into two by a plane that does not pass through it. Projections 41, 41 that engage with the connecting rods 27, 27 of the mount 24 are formed on the inner side of the longitudinal edge of the buffer pad 40.

As is clear from FIG. 4, this buffer pad 40 sandwiches the handlebar 1 between the master cylinder 12 and reserve tank 13 that are integrally formed, and the fixture 24, and tightens the four bolts 29. 2
When tightening through the through holes 30, 30 of No. 6, the protrusions 41, 41 are engaged with the connecting rods 27, 27. By tightening the bolt 29, the protrusions 41, 41 are clamped between the connecting rods 27, 27 and the integrated body of the master cylinder 12 and reserve tank 13.

Furthermore, since the master cylinder 12 is disposed below the rotating surface of the brake lever 11, the height of the reserve tank 13 is lowered, and the overall amount of upward and downward protrusion from the handlebar 1 is reduced. Since the components are equalized, safety for drivers and the like is improved, and the entire structure can be made compact, improving the visibility of switches and the like.

Furthermore, in this embodiment, the master cylinder 12 and the reserve tank 13 are integrally formed by aluminum alloy casting, which increases mechanical strength, reduces the number of parts, and improves assembly workability.

As described above, this invention provides a hydraulic generator near the handlebar grip of a bar handle so that the amount of upward and downward protrusion from the handlebar is approximately equal, and a buffer pad attached to the mounting fixture on the driver's side. Therefore, in the unlikely event that the vehicle overturns, a part of the driver's body will be less likely to come into contact with this hydraulic generator, and the driver's body will be protected by this buffer pad. Therefore, safety is improved. Furthermore, since the edge of the buffer pad is sandwiched between the mating surfaces of the hydraulic generator and its mounting tool, special metal fittings for mounting the buffer pad are not required, and the structure is simple without increasing the number of parts.

[Brief explanation of the drawing]

FIG. 1 is a rear view showing one embodiment of the present invention, FIGS. 2 and 3 are a plan view and a front view, and FIG.
5 and 5 are a cross-sectional view taken along the line ``-'' and ``-'' in FIG. 2, and FIG. 6 is a perspective view of the fixture. 2...Accelerator grip as a handle grip, 10...Hydraulic pressure generator, 12...Master cylinder, 13...Reserve tank, 40...Buffer pad.

Claims (1)

[Claims] 1. In a bar handle equipped with a hydraulic pressure generator having a reserve tank and a master cylinder on the side opposite to the driver near the handle grip, the hydraulic pressure generator is mounted so that the upper and lower sides thereof protrude vertically from the handlebar approximately equally; A safety device for a bar handle, characterized in that a buffer pad is attached to a fitting on the driver's side of a hydraulic generator, and an edge of the buffer pad is sandwiched between an interface between the hydraulic generator and its fitting. .