JPS5855043Y2 - spoke wheels - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a spoked wheel for a two-wheeled vehicle.

Conventionally, a spoked wheel is constructed by inserting a spoke 1 into a hole 2a of a bub 2, securing it with a head 1a at its base end, and tightening the tip with a nipple on the rim side, as shown in Fig. 1. was.

By the way, when the spoke 1 is inserted from the outside as shown in a, the bending angle of the bent portion 1b widens over time, causing loosening of the spoke 1, and as shown in b, the spoke 1 is inserted from the inside. The one inserted is the hole 2a of the bubble 2.
were in point contact with the spoke 1 at points A and B, and with use, points A and B became worn or bent, causing the spoke 1 to become loose.

For this reason, after a predetermined period of use, it is necessary to adjust the tension of the spokes 1 again, a so-called retightening operation, which makes maintenance of the spoke wheel extremely troublesome.

A bifurcated socket with a screw hole is rotatably connected in the circumferential direction of the bub via a pin, and the spokes are configured in a straight line, with a head at one end and a threaded portion at the other end. It is an object of the present invention to provide a spoked wheel which eliminates the above-mentioned drawbacks by preventing the head from coming off the rim and by screwing the threaded part into the threaded part of the socket.

Embodiments of the present invention will be described below with reference to FIGS. 2 and 3.

The spoked wheel 10 is constructed by tightening and fixing a bub 11 and a rim 12 with a large number of spokes 13.

Flanges 15.15' that protrude in the radial direction over the entire circumference are formed on the left and right sides of the bub 11, respectively, and a large number of holes 16 are formed in these flanges 15.15' at predetermined intervals.

Further, a pin 17 is fitted into the hole 16, and two crotches 19a of the socket 19 are pivotally supported at both ends of the pin 17.
Therefore, the socket 19 is rotatably connected in the circumferential direction of the bub 11 via the pin 17 within the tension plane of the spoke 13.

Further, a screw hole 19b is passed through the other end of the socket 19 in the axial direction thereof.

On the other hand, the spoke 13 has a linear configuration, and one end thereof is a screw head 20 having a groove 20a for screwdriver, and the other end is a screw hole 19 of the socket 19.
It has a threaded part 21 that can be screwed into the part b, and furthermore, a turning corner part 22 with a cut side surface is formed in the middle part.

As a result, the present spoke wheel 10 is constructed by inserting the spokes 13 into the holes 12a of the rim 12, and further securing them with the screw heads 20, and inserting the threaded portions 21 into the screw holes 19b of the socket 19. Tighten the grooves 20a of 20 by rotating the spokes 13 with a tool.
and the rim 12 by tightening and fixing.

At this time, use a jig or the like to hold the socket 19 so as to face the direction in which the spokes 13 are installed, and guide the spoke 13 from the hole 12a of the rim 11 to the screw hole 19b of the socket 19 using the jig or the like. The spoke wheel 10 can be assembled automatically or semi-automatically.

Furthermore, after the tire is mounted on the rim 11, if the tension of the spokes 13 goes out of alignment due to an impact or the like, not only can the spoke tension be easily adjusted using the turning corner 22 without removing the tire, but also the spoke tension can be easily adjusted without removing the tire. The socket 19 screwed into the spoke is rotatably connected in the circumferential direction of the bub 11 via the pin 17, so even if an impact is applied, the stress is dispersed in the circumferential direction of the bub, so that the base of the spoke You can extend the life of the spokes and bub without concentrating on them.

Furthermore, the spokes 13 are thicker than conventional ones, so spokes made of aluminum can also be used.

As explained above, according to the present invention, the spokes 13 are configured in a straight line, and the threaded portions 21 provided at the tips of the spokes 13 are connected to the threaded holes 19b of the sockets 19 so as to be rotatable in the circumferential direction of the bub 11. Since the spokes 13 are tightened and fixed by being screwed together, the spokes 13 do not have bent portions or point contact portions, and it is possible to prevent loosening of the spokes due to widening of the bent portion and wear of the point contact portions.

Therefore, the additional loosening work that was conventionally required can be omitted, and maintenance is easy.

In addition, the bifurcated socket is rotatably connected in the circumferential direction of the bub via a pin, so when tightening and fixing the spoke between the bub and the rim, use a jig or the like to attach the socket to the spoke. When held in the direction of tension, the spokes are not subject to bending resistance and are screwed into the threaded holes of the socket without any resistance, making it easy to automate and assemble. The structure is simple and can be manufactured at low cost without requiring a fixed nipple.

Furthermore, since the sockets that screw the spokes are connected via pins so that they can rotate freely in the circumferential direction of the bubble, even if an impact is applied, the stress is dispersed in the circumferential direction of the bubble, and is not concentrated at the base of the spoke. , can extend the life of spokes and bubs.

[Brief explanation of the drawing]

FIGS. 1a and 1) are front sectional views showing a means for attaching spokes to a hub according to a conventional example, FIG. 2 is a side view showing a spoked wheel according to the present invention, and FIG. 3 is a sectional view thereof. 10...Spoke wheel, 11...Bub, 12...Rim, 13...Spoke,
19...Socket, 19b...Screw hole, 20...Head, 121...Screw part.

Claims (1)

[Scope of utility model registration request] In a spoked wheel in which a bub and a rim are tightened and fixed by a number of spokes, a bifurcated socket having a threaded hole is rotatably connected in the circumferential direction of the bub via a pin, while the spokes are It is arranged in a straight line, and has a head at one end and a threaded part at the other end, and the head prevents the rim from coming off, and the threaded part is screwed into the threaded part of the socket. Spoke wheels made up of.