JPH0751992Y2 - Hanger drainer - Google Patents

Description

TECHNICAL FIELD The present invention relates to a structure for draining a hanger for a bicycle.

2. Description of the Related Art A conventional bicycle hanger has a structure as shown in FIG. That is, 1 is a vertical pipe, and the hanger lug 2'is connected to the lower end thereof. The hanger lug 2'consists of an outer tube 3'and an inner tube 4'inserted inside the outer tube 3 ', and the left one 5 and the right one 6 are screwed into the screws provided inside the inner tube, so that the left and right ones are fitted inside. A crankshaft 8 is rotatably supported via a ball 7. And above the inner tube 4 ',
Since the pipe water drain hole 2a 'is provided at a place communicating with the standing pipe 1, rainwater entering from the standing pipe is accumulated inside the hanger and cannot escape. Therefore, a hanger drain hole 2b 'is provided just below the hanger to drain water. However, in this case, since the hanger uses a fairly thick plate, the hanger drainage hole 2b 'is inevitably large, and the muddy splashed up on the front wheel penetrates into the hanger through this hole and the bearing This will adversely affect the contact portion of the ball 7. For this reason, conventionally, in general, a hanger drainage hole is opened, and further, a dust cap 9 is inserted into the hanger to prevent a drop and dust.

However, with such a structure, the dust cap 9 completely seals the bearing portion, so that if water enters from other than the vertical pipe, for example, the crankshaft and the left and right ones If it enters from a space or the like, it is difficult for the water once entered to escape, and the bearing portion is exposed to moisture for a long time, which in turn causes rust.

In addition, unless the dust cap is accurately fitted inside the one at the time of assembly, there is a problem that water enters from the incomplete fitting portion and does not fulfill its role.

So, in this invention, without using this dust cap,
The water can be completely drained out, and there is no risk of intrusion by the spatter of the front wheels.

A means for solving the problems and means for solving the above problems are to provide a notch-shaped groove extending from the end surface of the hanger toward the center in the inner tube of the hanger, and align the outer portion with the position of the end. The tube is provided with a notch.

Action The action of this technical means is as follows. That is,
Since the hanger is doubled, the drainage channel created by the groove of the inner tube and the notch of the outer tube does not become a straight line, it goes through between the outer tube and the one and draws water to the outside Therefore, the water in the inside completely escapes to the outside, but the invasion is prevented from the muddy flying from the wheel.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 1, reference numeral 1 is a vertical pipe, and a hanger lug 2 is connected to the lower portion of the vertical pipe. The hanger lug is composed of an outer tube 3 and an inner tube 4 which is press-fitted inside and fixed by welding.

Both ends of the inner tube 4 are threaded, and the left one 5 and the right one 6 are screwed together. A crankshaft 8 is rotatably supported inside the left and right ones via balls 7. Non-turn washer 10 and non-turn nut 11
Is to prevent loosening of the left screw.

A saddle (not shown) is fixed above the standing pipe 1.

As shown in FIG. 3, the inner tube 4 is created by punching and notching a sheet metal, and bending this into a cylindrical shape to obtain the state of FIG. 2, and press-fitting this into the outer tube 3, After fixing the inner tube 4 and the outer tube 3 by spot welding, screwing is applied to both ends.

At this time, the drainage groove 4b formed by the notches 4a and 4a in FIG. 3 is press-fitted so as to be located right below the hanger.

Then, as shown in FIG. 4, the outer tube 3 of the hanger.
A notch 3a is provided on the end surface of the drainage groove 4b.
It is provided at a position where it overlaps the end of the. 4c is a pipe drain hole.

Next, the operation of the configuration of this embodiment will be described.

Rainwater enters the hanger rack 2 from the gap of the saddle mounting portion above the vertical pipe 1 and from the direction A through the pipe drain hole 4c. The pipe drainage hole 4c is used to drain water in the vertical pipe after this, which is soaked in water at the time of preparation for painting the frame.

Further, rainwater also enters through the gap B between the crankshaft 8 and the left and right ones.

These rainwater collects at the bottom of the inner tube 4, passes through the drainage groove 4b provided directly below the inner tube (A ₁ ) and passes through the space between the lower part of the left one 5 and the outer tube 3. Reaches the left edge of Hanger Rag 2,
It goes out through the notch 3a of the outer tube 3 provided in that portion to the outside (A ₃ ).

On the other hand, when the vehicle travels on a road surface with accumulated muddy water, the muddy water splashed by the front wheels flies below the hanger rug 2, and this muddy water adheres to the notch 3a of the outer tube 3, but the drainage groove 4b. It does not penetrate into the inside of the hanger rag through.

Effect of the Invention The present invention has a structure of draining water provided at the bottom of the hanger, instead of directly making a hole downward, pass water through the gap between the outer tube and the left one, guide it to the end of the hanger, and then downward. Since it is configured to release water, it can reliably drain water and prevent the entry of mud, so the dust cap that was used conventionally is not required, the product can be provided at low cost, and the labor of assembling the dust cap can be saved. Easy to assemble.

In addition, since the inner tube can be used by bending a sheet metal into a cylindrical shape, if the material is punched out into a shape as shown in Fig. 3 before bending, it takes time and effort to provide a special drainage groove. No, it can be easily manufactured.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a hanger according to the present invention, FIG. 2 is a sketch of the inner tube thereof, FIG. 3 is a development view of the material of the inner tube, FIG. 4 is a sketch of the outer tube, and FIG. It is a longitudinal cross-sectional view showing a hanger. 1 ... Vertical pipe, 2 ... Hanger rag, 3 ... Outer tube, 3a ... Notch, 4 ... Inner tube,
4b ... Drain groove.

Claims (2)

[Scope of utility model registration request] 1. A hanger rug constructed by inserting an inner tube inside an outer tube joined with a vertical pipe, wherein notch-shaped water extending from the end of the hanger to the inside of the threaded portion of the hanger is formed at the bottom of the inner tube. A water removing device for a hanger, comprising a drainage groove and a notch provided at a lower portion of the outer tube so as to overlap with an end portion of the water drainage groove. 2. The hanger drainage device according to claim 1, wherein the drainage groove is located at a joint between inner tubes formed from a flat plate.