JPH06109621A - Rotational friction resistance test device - Google Patents

Abstract

PURPOSE:To continuously make a sample and a panel material slide on each other in the same direction at a same speed, for a stable durability test and also far measurement of friction resistance during the durability test. CONSTITUTION:An arm 5 is assigned on a turn table 2, electrically rotated, on which a panel material 4 is placed, and a sample supporting roller 8 is attached to the tip of it. On the other peripheral surface on the lower side of the sample supporting roller 8, a sample 12 is bonded so that it slides on the panel material 4. A pressurizing lever 13 is fixed to the sample supporting roller 8, and the tip of the said lever 13 pressurizes a pressure sensor 14. A weight 16 is placed on the arm 5 for applying a specified load.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary frictional resistance tester for measuring the frictional resistance of a weather strip for automobiles made of rubber or the like against the glass surface or the like and for testing the sliding noise generated during sliding. .

[0002]

2. Description of the Related Art As a frictional resistance tester for measuring the frictional resistance of weather strips for automobiles, for example, a reciprocating tester as shown in FIG. 3 has been conventionally used. This has a slide base 21 that reciprocates linearly, on which a panel material 22 such as a glass plate is placed, and a sample support member 23 having an arc-shaped sample mounting surface 23a. Is located above it. The sample support member 23 is fixed to the tip of an arm 24 arranged horizontally, and the base end of the arm 24 is linked to the load cell 25. The arm 24 is swingably and rotatably supported on the lower end of a rod 26 that swings downward. Further, 27 is the arm 2 with the sample 28 attached.
A balance adjuster for adjusting 4 horizontally, and 29 is a weight for applying a predetermined load to the sample 28.

In this friction resistance tester, the slide base 21
Moves to the right in the figure, the frictional resistance of the sample 28 causes arm 2 to move.
4 moves to the right in the figure and the load cell 25 is pulled, so that the frictional resistance can be detected as the tensile load of the load cell 25. Moreover, in addition to being able to perform a durability test by continuously reciprocating, it is also used for a sliding sound test and the like.

[0004]

However, in the above-mentioned conventional structure, since the panel material 22 slidingly contacting the sample 28 reciprocates, the forward movement due to the speed change and the sliding direction difference at the time of reversal or the deformation of the sample 28. There is a problem that the contact point changes on the return path and the sliding does not become a certain condition during the durability test. Further, in order to measure the frictional resistance during the durability test, the tester must be stopped once and the positional relationship with the load cell 25 must be adjusted. That is,
The resistance change during the durability test cannot be continuously measured. Further, since the distance between the sliding contact of the sample 28 and the load cell 25 is large, it is easily affected by the vibration of the intermediate arm 24 and the like, and it is difficult to accurately measure the frictional resistance.

Further, when the frequency of the sliding sound generated during sliding is analyzed, the sliding sound generated by the reciprocating movement of the panel material 22 becomes intermittent, which makes the measurement difficult. There is also.

[0006]

Therefore, according to the present invention,
A continuous sliding test can be performed by rotating the panel material. That is, the rotary frictional resistance tester according to the present invention includes a rotary table for constantly rotating the mounted panel material,
An arm that is arranged tangential to the rotation of the turntable and that can swing up and down, and a sample support that is rotatably supported by the tip of this arm and that has a sample attached to the outer peripheral surface facing the panel material. A roller, a weight that applies a predetermined load to the arm so that the sample slides on the surface of the panel material, a pressure lever that is attached to the sample support roller and swings integrally with the roller, and this pressure lever And a pressure sensor for detecting a pressing force due to the swing thereof.

[0007]

When the turntable rotates, the panel material such as a glass plate rotates and the sample slides on it. Due to the frictional resistance caused by this sliding contact, the sample support roller tries to rotate, and the pressure lever presses the pressure sensor. That is, the frictional resistance is measured as the pressing force applied to the pressure sensor.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

1 and 2 show an embodiment of a rotary frictional resistance tester according to the present invention.

On the upper surface of the base 1 of the tester, a rotary base 2 is arranged substantially horizontally. This turntable 2 is equipped with an electric motor 3
Is driven to rotate, and a panel material 4 such as a glass plate or a metal panel is placed on the upper surface thereof. The rotation speed of the rotary base 2 can be arbitrarily set by controlling the voltage of the electric motor 3.

The arm 5 is arranged substantially horizontally above the rotary table 2 and, as shown in FIG. 2, is provided along the tangential direction of rotation of the rotary table 2. This arm 5
Is supported by a block 6 via a hinge 7 so as to be vertically swingable. Further, the block 6 is attached to the base 1 so as to be vertically movable, and is also movable in the direction of the arrow Y in FIG. 2, so that the center position of the hinge 7 can be changed even if the dimensions of the panel material 4 are changed. Can be adjusted to the optimum position.

The tip of the arm 5 is located at a position where it overlaps with the rotary table 2, and the sample support roller 8 is attached thereto. Specifically, a pair of brackets 9 is provided on the lower surface of the arm 5.
Is fixed, and the roller holder 1 is bridge-shaped over both of them.
0 is attached. And this roller holder 1
0, the sample support roller 8 is rotatably supported via a rotary shaft 11. A sample 12 cut into a predetermined rectangular shape is attached to the outer peripheral surface of the sample support roller 8, particularly the lower outer peripheral surface facing the panel material 4. The sample support roller 8 is arranged so as to rotate along the longitudinal direction of the arm 5, and as shown in FIG. 2, the lowest point of the roller 8, that is, the contact point A between the sample 12 and the panel material 4. A line L connecting the rotation center O and the rotation center O is orthogonal to the arm 5. As a result, when the panel material 4 is rotated, the sample 12 is correctly placed on the arm 5
It will experience frictional resistance along its length.

The rotary table 2 rotates clockwise in FIG. 2, and along with this, the frictional resistance acts in the pulling direction of the arm 5.

A pressure lever 13 protruding in the radial direction is fixed to the sample support roller 8. The pressure sensor 14 is attached to the lower surface of the bracket 9 on the tip side of the arm 5 so as to face the tip portion of the pressure lever 13. The pressure sensor 14 is a pressure lever 1
3 is in contact with the tip of the pressure roller 13 and the pressing force of the pressure lever 13 due to the rotation of the sample support roller 8 is detected.

At the base end of the arm 5, a balance adjuster 15 is provided for adjusting the arm 5 in a horizontal state with the sample 12 attached. Then, a weight 16 for applying a predetermined load is placed on the upper surface of the tip of the arm 5, specifically, above the contact point A described above. In other words, once the balance is temporarily adjusted to the horizontal state and the weight 16 with a predetermined load is put on the sample 12,
The load is accurately applied to.

In the structure of the above embodiment, when the rotary table 2 rotates and the panel material 4 such as a glass plate rotates, the sample support roller 8 tries to rotate due to frictional resistance generated between the sample 12 and the sample 12. The pressure lever 13 presses the pressure sensor 14. Therefore, the frictional resistance is measured as the pressing force on the pressure sensor 14. In the measurement of the frictional resistance, the distance from the contact point A where the frictional resistance is generated to the pressure sensor 14 is short, and the frictional resistance is transmitted only through the sample support roller 8 and the pressure lever 13. Accurate measurement can be performed without receiving. Further, the frictional resistance can be measured at all times, and for example, the change in the frictional resistance can be continuously measured during the durability test.

Further, since the sample 12 can be continuously slid in a fixed direction at a fixed speed, the durability test can be stably carried out, and the frequency analysis of the sliding sound becomes very easy.

[0018]

As is apparent from the above description, according to the rotary frictional resistance tester of the present invention, sliding can be continuously performed at a constant direction and speed, and the durability test can be performed constantly. It can be done under certain conditions. Further, the frictional resistance can be measured at all times, and the change in the frictional resistance during the durability test can be continuously measured. Moreover, the accuracy of the measurement of the frictional resistance is improved without being affected by the vibration of the arm or the like. Further, since the sliding can be continuously continued, the frequency analysis of the sliding sound becomes easy.

[Brief description of drawings]

FIG. 1 is a front view of a friction resistance tester according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a front view of a conventional friction resistance tester.

[Explanation of symbols]

 2 ... Rotating table 4 ... Panel material 5 ... Arm 8 ... Sample support roller 12 ... Sample 13 ... Pressurizing lever 14 ... Pressure sensor 16 ... Weight

Claims (1)

[Claims] 1. A rotary table for constantly rotating a mounted panel material, an arm arranged in a tangential direction of rotation of the rotary table and swingable up and down, and rotatable on a tip portion of the arm. Mounted on the sample support roller, a sample support roller on which the sample is mounted on the outer peripheral surface facing the panel material, and a weight for applying a predetermined load to the arm so that the sample slides on the surface of the panel material. And a pressure sensor that swings integrally with the roller, and a pressure sensor that is in contact with the pressure lever and that detects a pressing force due to the swing, and a rotary friction resistance tester.