JPH04138382A - Testing apparatus of sliding contact - Google Patents

Abstract

PURPOSE:To enable easy and sure fitting and removal of a test sample and to enable attainment of accurate evaluation and execution of a test with high reproducibility, by providing a rack, a pinion and another rack on one end of which a pre-load is applied by a spring. CONSTITUTION:A driving element makes the rotational force of a motor be a reciprocating motion through the intermediary of a crank 21 and this motion is turned into a rotary reciprocating motion by a rack 22 and a pinion 23, while a pre-load is applied on another rack 25 by a spring 24 to prevent unstableness of a sliding contact surface at the time of stoppage. This rotary reciprocating motion is transmitted to a rotary body 6 by a shaft 5 supported by a bearing 4 and a rotary holder 9 is fitted in the rotary body 6 with mutual indentation. A jig 1 fitted with a brush is fitted removably to this holder 9. Besides, a jig 2 fitted with a base is fitted removably to a slide stage 13 by a bolt 27. The brush 14 and the disk rotary base 15 are fixed to the jigs 1 and 2 respectively and the slide stage 13 is pushed on one side by a spring 12, while contact between them is adjusted by a micrometer 11 provided on the other side.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a sliding contact testing device for a disc circuit board and a brush.

(Prior Art and Problems) With the recent increase in the density and performance of electronic device parts, each part is being developed on a daily basis.

Test equipment specific to the application and function is required to evaluate the performance of developed materials.

In encoders, potentiometers, etc., a combination of a disc circuit board with a thick-film resistor circuit and a multi-wire bundle sliding brush made of a large number of ultra-fine wires is widely used. Also in the sliding contact testing device for performance evaluation, 1]:,
In addition to the original purpose of accurate evaluation and reproducibility, it is also necessary to be able to attach and detach particularly small test samples easily and reliably, but existing test equipment can satisfy all of these requirements. There was no.

(Objective of the Invention) The present invention has been made to meet the above-mentioned needs, and provides a sliding contact testing device that allows test samples to be easily and reliably attached and removed, and that allows for accurate evaluation and highly reproducible testing. It is.

(Structure) The technical means of the present invention for solving the above problem is that, in a sliding contact testing device for a disc circuit board and a brush, one end of the rack and pinion, which connect rotational motion via a crank, is connected to a spring. A drive section is provided with another rack preloaded with a preload, and a rotating body holder that is fitted in the unevenness of the rotary body holder and a rotating body holder that is fitted with the unevenness of the rotating body and the phase lT, which transfers the rotational reciprocating motion from the drive unit to the rotating body connected by a shaft. It had a sliding contact test section consisting of a brush mounting jig that can be attached with a port, a micrometer, a slide table that moves from side to side with the other supported by a spring, and a board mounting jig that is attached to the slide table with bolts. It is characterized by this.

(Function) According to the sliding contact test device of the present invention configured as described above, since another rack is provided with one end of the rack and pinion preloaded with a spring, the gear during stoppage is Accurate rotational reciprocating motion is achieved without rattling of the sliding contact surface due to backlash.

Alternatively, it can be attached and detached by fitting or bolting, so it can be easily attached and detached after the test sample has been prepared in advance.

Furthermore, since the micrometer can be received by the other spring and slid horizontally, the contact force can be adjusted and set accurately.

(Example) Examples will be explained in detail below. 1. The entire sliding contact test section in which cassette-type jigs that can be attached or detached by fitting or bolting are assembled into an L-shaped base 26 as shown in Figure 1. Reference numerals 1 and 1 in the side view indicate a rotating body holder 9, a removable brush mounting jig 1, and a shaft I connected to a coupler 3 and receiving rotational reciprocating motion from a drive unit by a bear link 4.
-5 The rotating body 6 which has become a toe body and the convex portion 7 at the center of the rotating body 6
It is attached to the removable rotary body holder 9 fitted into the recess 8 in the center of the rotary body holder 9 with a bolt 0. On the other hand, 2 is a substrate mounting jig 2 which can be attached to and detached from the slide table 13 using a bolt 27. The jig 2 can be slid in the left and right direction by pushing the slide table 13 which is supported by a micrometer 11 and a spring 12 on the other side. 1 brush 14
The contact force between the board mounting jig 2 and the disc circuit board 15 is adjusted and set. Figure 2 shows the slide stand 13 and board mounting jig 2.
The figure shows the state with the brush mounting jig ■ removed.

In FIG. 3, the brush 14 is tilted using the brush mounting jig 1, and the clamping plate 16 is used to fix the brush 14. 1. FIG. 4 shows that the board mounting jig 2 is used to tighten the center round hole 17 of the circular circuit board 15 and the center round hole 18 of the board mounting jig 2 using a rivet-like port I9 and a nut 20. Fix it. FIG. 5 is a diagram showing the drive unit, in which the rotation of the motor is converted into reciprocating motion via the crank 21, and converted into rotational reciprocating motion by the rack 22 and pinion 23. At this time, in order to prevent rattling of the sliding contact surface due to backlash of the gear when stopped, another rack is provided on the opposite side, and a spring 24 is installed at one end.
Apply preload.

This is a sliding contact testing device with a total of 6 sets of sliding contact testing sections above and below.

(Effects of the Invention) As described above, according to the sliding contact testing device of the present invention, it is a cassette-type test sample mounting jig that can be attached and detached by fitting or bolting, so it can be easily attached and detached and can be installed reliably. In addition, the mutual position of the facing brush and the board is determined by a micrometer, and the other is supported by a spring and can be slid in the left and right direction, so the contact force can be adjusted and set accurately.Furthermore, there is another rack on the opposite side of the rack and pinion. Since the end is preloaded with a spring, there is no wobbling of the sliding contact surface due to gear backlash when stopped, and accurate rotation and reciprocation is possible, making it easy to use even with small test samples. It has the excellent effect of being able to be reliably attached and detached, as well as allowing for accurate evaluation and highly reproducible testing.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a sliding contact testing section in a sliding contact testing device according to an embodiment of the present invention, FIG. 2 is a perspective view showing a state in which the board mounting jig in FIG. 1 is removed, and FIG. The figure is a perspective view showing a brush mounting jig in one embodiment of the present invention.
Fig. 4 is a perspective view showing a substrate removal (=I jig) in an embodiment of the present invention, and Fig. 5 is a side view showing a drive unit in an embodiment of the present invention. Tool, 2... Board mounting jig, 3.
...Coupler, 4... Bearing, 5... Shaft, 6... Rotating body, 7... Convex part, 8... Concave part, 9
... Rotating body holder, lO... Bolt, 11...
Micrometer, 12... Spring, 13... Slide stand, 14... Brush, 15... Disc circuit board, 1G... Holding plate, 17.18... Round hole, 19...
Rivet-shaped bolt, 20... Nut, 21... Crank, 22... Rack, 23... Pinion, 24...
・Spring, 25...Other rack, 26...
・L-shaped base, 27 bolts. Applicant Tanaka Kikinzoku Kogyo Co., Ltd.

Claims (1)

[Claims] 1) In a sliding contact test device for a disc circuit board and a brush, a drive unit includes a rack and pinion that connect rotational motion via a crank, and another rack with one end preloaded with a spring; The rotational reciprocating motion from the drive unit is transferred to a rotating body connected by a shaft, a rotating body holder that fits into the mutual unevenness, a brush mounting jig that is attached to the rotating body holder with bolts, a micrometer, and a spring. 1. A sliding contact testing device comprising a sliding contact testing section consisting of a sliding pedestal that moves in the left-right direction and a board mounting jig that is attached to the sliding pedestal with bolts.