★★★ ＜知的財産翻訳検定＞答案用紙 ★★★
==================================================================科

目：機械工学氏

名：安藤奈美==================================================================
WHAT IS CLAIMED IS:
1.

A jig for measuring spring force of a coil spring, comprising:a cylindrical holder; anda guide sleeve which is slidably disposed in the cylindrical holder and whoseinside diameter is substantially equal to an outside diameter of the coil spring to bemeasured.
2.

The jig according to claim 1, wherein sliding resistance between theholder and the guide sleeve is determined to be a level at which the guide sleeve does
not move only by its own weight.
DETAILED DESCRIPTION OF THE INVENTION
Field of the Invention[0001]The present invention relates to a jig which permits a coil spring to be

erected upright, for use in measurement of a specified load of the coil spring at a
specified height thereof.
Related Art[0002]

Referring first to Figs. 6 and 7, there will be explained a conventional

technique. Reference numeral 101 denotes a test stand of a spring load measuring
device on which is placed a fixing sleeve 112 for fixing a coil spring 111 in an upright
posture. The coil spring 111 is disposed in an inside space 113 of the fixing sleeve 122.
Reference numeral 114 denotes a load measuring portion for measuring a specified load
(spring force or elastic force) of the coil spring 111 when compressed to a specified
height.
OBJECT OF THE INVENTION[0003]In the conventional technique described above, however, an upper half

portion of the coil spring 111 protrudes from the upper end of the fixing sleeve 112.
Therefore, the upper half portion of the coil spring 111 may be buckled as shown in Fig.
7 when the load measuring portion 114 is lowered for the measurement, rendering themeasurement impossible in some cases. In an instance where the specified load at a
relatively large height is measured, the length of the fixing sleeve 112 is accordinglyincreased. On the contrary, where the specified load at a relatively small height ismeasured, the length of the fixing sleeve 112 cannot be increased.
conventional technique inevitably suffers from the aforementioned problem.
-1-Thus, theOPERATION[0005]In the arrangement according to the present invention, the guidesleeve is advanced or retracted by the sliding movement of the holder and the guidesleeve. Accordingly, the amount of protrusion of the coil spring from the upper end of
the guide sleeve is decreased irrespective of the specified height of the coil spring to bemeasured, thereby preventing buckling of the coil spring.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS[0006]A cylindrical holder 1 made of a metal material has an inner hole 2 inwhich a guide sleeve 3 is slidably disposed. A clearance 4 is formed between the guidesleeve 3 and the holder 1. The guide sleeve 3 has a hollow inner space 5 having a
diameter substantially equal to an outside diameter of the coil spring to be measured.
At an upper and a lower portion of the guide sleeve 3, there are respectively formed
circumferential grooves 6, 7 in which rubber O-rings 8, 9 are respectively fitted. TheO-rings 8, 9 are held in contact with an inner circumferential surface of the holder 1which defines the inner hole 2. Sliding resistance of the guide sleeve 3 to the holder 1
owing to the contact of the O-rings 8, 9 and the holder 1 is arranged such that the guidesleeve 3 is inhibited from moving downwards only by its own weight while at the sametime permitting the downward movement of the guide sleeve 3 by a certain degree ofexternal force applied thereto.

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