CN101811542A - Installation structure of motorcycle steering column - Google Patents

Abstract

The invention discloses a motorcycle steering column installation structure. The steering column is installed in the head tube, and is supported by the upper and lower steering bearings and the head tube, and sealing plates are arranged at the ports at the upper and lower ends of the head tube. . The sealing sheet is composed of a metal sheet and a rubber sheet, the metal sheet and the rubber sheet are ring structures, and the axis lines of the two are on the same straight line; the outer edge of the metal sheet is embedded in the inner ring of the rubber sheet, and the rubber sheet The outer ring of the sheet is integrally formed with two lips, wherein the first lip is embedded in the head tube and abuts against the inner wall of the head tube, and the second lip is pressed against the end wall of the head tube. In the present invention, by adding a sealing sheet at the port of the head tube, the inside of the head tube is completely isolated from the outside, effectively preventing dust, rainwater, etc. , simple structure, convenient installation, good reliability and other characteristics, it can be used on various types of motorcycles.

Description

Motorcycle steering column installation structure

technical field

The invention relates to a motorcycle component, in particular to a mounting structure for a motorcycle steering column.

Background technique

At present, the installation structure of the steering column of a motorcycle is shown in Figure 4. The steering column 1 is installed in the head tube 2, and is supported by the upper and lower steering bearings 3, 4 and the head tube 2, and the upper steering bearing 3 is formed by The nut 5 set on the steering column 1 is locked. Since the end of the head tube 2 is not effectively sealed, dust and rainwater in the air can easily enter the inside of the head tube 2, causing the upper and lower steering bearings 3 and 4 to fail to lubricate and cause premature wear, so that the steering column 1 is prone to Shaking makes the driving operation laborious, the driver is prone to fatigue, and there are certain potential safety hazards; the large dust residue may also cause the steering to be stuck, resulting in inflexible steering of the front of the motorcycle, which is very dangerous in emergency situations during motorcycle driving. It is easy to cause safety accidents.

Contents of the invention

The technical problem to be solved by the present invention is to provide a motorcycle steering column installation structure to effectively prevent impurities such as dust and rainwater from entering the interior of the head tube.

The technical scheme of the present invention is as follows: a motorcycle steering column installation structure, comprising a steering column, a head tube, an upper steering bearing, a lower steering bearing, a nut and a sealing plate, wherein the steering column is set in the head tube, and passes through the upper, The lower two steering bearings are supported by the head tube, and sealing sheets are arranged at the ports at the upper and lower ends of the head tube.

Using the above technical scheme, a sealing sheet is embedded at the ports at the upper and lower ends of the head tube, and the sealing sheet covers the gap between the head tube and the steering bearing, so that impurities such as dust and rainwater in the air cannot enter the inside of the head tube, thereby It ensures the lubrication of the upper and lower steering bearings, prolongs the service life of the steering bearings, prevents the steering column from shaking or sticking, and eliminates potential safety hazards.

The above-mentioned sealing sheet is composed of a metal sheet and a rubber sheet. Both the metal sheet and the rubber sheet have a ring structure, and the axis lines of the two are on the same straight line; the outer edge of the metal sheet is embedded in the inner ring of the rubber sheet, and the rubber sheet Two lips are integrally formed on the outer ring of the car head tube, wherein the first lip is embedded in the head tube and abuts against the inner wall of the head tube, and the second lip is pressed against the end wall of the head tube. On the one hand, the above structure is simple, practical and easy to manufacture; on the other hand, the combination of the first lip and the second lip can completely isolate the inside of the head tube from the outside, and the sealing effect is good.

When the above-mentioned rubber sheet is in a natural state, the angle between the first lip and the second lip is an acute angle, so that when the sealing sheet is installed at the port of the head tube, the first and second lips of the rubber sheet will Deformation, the first lip tightly abuts against the inner wall of the head tube, and the second lip presses the end wall of the head tube tightly, thereby further improving the sealing effect.

In order to facilitate installation and facilitate the positioning of the sealing sheet, a bushing is provided between the sealing sheet and the steering bearing, one end of the bushing is attached to the steering bearing, and the other end of the bushing is attached to the metal sheet of the sealing sheet.

Beneficial effects: the invention adds a sealing sheet at the port of the head tube to completely isolate the inside of the head tube from the outside, effectively preventing dust, rainwater, etc. from entering the head tube, and ensuring the lubrication of the steering bearing and the rotation flexibility of the steering column. The utility model has the characteristics of ingenious conception, simple structure, convenient installation and good reliability, and can be used on various types of motorcycles.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

FIG. 2 is a partially enlarged view of FIG. 1 .

Fig. 3 is a schematic diagram of the structure of the sealing sheet in the present invention.

Fig. 4 is a schematic structural diagram of the background technology.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

As shown in Fig. 1, Fig. 2 and Fig. 3, the present invention is composed of steering column 1, head tube 2, upper steering bearing 3, lower steering bearing 4, nut 5, sealing sheet 6 and bushing 7, etc., wherein the steering column 1 and the head pipe 2 all adopt the prior art, and its structure is not described in detail here. The sealing sheet 6 is composed of a metal sheet 61 and a rubber sheet 62. Both the metal sheet 61 and the rubber sheet 62 are ring structures, and the axis lines of the two are on the same straight line. The outer edge of the metal sheet 61 is embedded in the inner ring of the rubber sheet 62, and two lips 62a, 62b are integrally formed on the outer ring of the rubber sheet 62, and these two lips 62a, 62b are all relative to the axis of the sealing sheet 6 The centerline is inclined, and when the rubber sheet 62 is in a natural state, the angle between the first lip 62a and the second lip 62b is an acute angle, and the acute angle preferably ranges from 60° to 80°.

As can be seen from Fig. 1, Fig. 2, Fig. 3, in the tube of the head tube 2 upper end, the upper steering bearing 3 is press-fitted, and the lower end surface of the upper steering bearing 3 is limited by the step surface in the head tube 2. A sealing sheet 6 is installed at the nozzle of the upper end of the head tube 2, the sealing sheet 6 is set on the steering column 1 through the central hole of the metal sheet 61, and a bushing 7 is arranged between the sealing sheet 6 and the upper steering bearing 3, the sealing sheet 6 The lower end surface of the bushing 7 fits the upper end surface of the upper steering bearing 3, the upper end surface of the bushing 7 fits the lower end surface of the metal sheet 61 in the sealing sheet 6, and the upper end surface of the metal sheet 61 is pressed by the nut 5, The nut 5 is screwed on the direction column 1 .

From Fig. 1, Fig. 3 and in conjunction with Fig. 2, it can be seen that the lower steering bearing 4 is press-fitted in the tube at the lower end of the head tube 2, and the upper end surface of the lower steering bearing 4 is limited by the stepped surface in the head tube 2. A sealing sheet 6 is also installed at the mouth of the head tube 2 lower end, and a bushing 7 is also arranged between the sealing sheet 6 and the lower steering bearing 4, and the upper end surface of the bushing 7 is attached to the lower end surface of the lower steering bearing 4. Close, the lower end surface of the bushing 7 is attached to the upper end surface of the metal sheet 61 in the sealing sheet 6, and the lower end surface of the metal sheet 61 is limited by the station program on the direction column 1. The lips 62a and 62b of the upper and lower sealing sheets 6 are plastically deformed, the first lip 62a is embedded in the head tube 2 and abuts against the inner wall of the head tube 2, and the second lip 62b is pressed against the head tube 2 on the end wall. Under the combined action of the first and second lips 62a, 62b, the inside of the head tube 2 can be completely isolated from the outside world, effectively preventing dust, rainwater, etc. The rotational flexibility of the steering column 1.

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Claims (4)

1. installation structure of motorcycle steering column, comprise direction post (1), head tube (2), last steering bearing (3), following steering bearing (4) and nut (5), wherein direction post (1) is located in the head tube (2), and by upper and lower two steering bearings (3,4) and head tube (2) supporting, it is characterized in that: the port at described head tube (2) upper and lower end is provided with seal strip (6).

2. installation structure of motorcycle steering column according to claim 1, it is characterized in that: described seal strip (6) is made of sheetmetal (61) and sheet rubber (62), sheetmetal (61) and sheet rubber (62) are circular ring structure, and both axial lines are on same straight line; The outer rim of described sheetmetal (61) embeds the inner ring of sheet rubber (62), be formed with two lips (62a, 62b) in the outer ring of sheet rubber (62), wherein first lip (62a) embeds in the head tube (2), and with the inwall butt of head tube (2), second lip (62b) is pressed on the end wall of head tube (2).

3. installation structure of motorcycle steering column according to claim 2 is characterized in that: sheet rubber (62) in the raw the time angle between described first lip (62a) and second lip (62b) be acute angle.

4. according to claim 2 or 3 described installation structure of motorcycle steering column, it is characterized in that: between described seal strip (6) and steering bearing (3 or 4), be provided with lining (7), one end of this lining (7) and steering bearing (3 or 4) are fitted, and the sheetmetal (61) of the other end of lining (7) and seal strip (6) fits.

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