JPS62163615U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of this invention, and FIG. 2 is a diagram showing an example of a fixed engagement screw that is a feature of this invention, in which a is a plan view, b is a side view, and FIG.
The figure is a sectional view of the main part showing a state in which fixation is completed with the fixed engagement screw, and FIGS. 4 and 5 are views showing other examples of the fixed engagement screw, in which a is a plan view, b is a side view, FIG. 6 is a sectional view showing another embodiment of this invention, and FIG.
The figure is a sectional view of a main part for explaining the effects of still another embodiment of this invention, FIG. 8 is a sectional view of a main part showing still another embodiment of this invention, and FIG. 9 is a conventional fixed engagement. FIG. 10 is a sectional view showing the device, FIG. 10 is a diagram showing its fixed engagement screw, a is a plan view, b is a side view, and FIGS. 11 and 12 are sectional views of main parts showing defects in the conventional device. be. In the figure, 1 is the base, 2 is the large diameter screw hole, and 3 is the base.
is a swinging member, 4 is a small diameter screw hole portion, 5 is a support member,
6 is a disc playback unit, 12 is a fixed engagement screw,
13 is a small diameter threaded portion, and 14 is a large diameter threaded portion. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A base having a large-diameter screw hole, a swinging member having a small-diameter screw hole smaller in diameter than the large-diameter screw hole, and a swinging member that is attached to the base. a supporting member that is swingably supported at intervals, a small-diameter screw portion at the tip portion that is screwed into the small-diameter screw hole portion of the swinging member, and a large-diameter screw hole of the base at the rear end portion. 1. A fixed engagement device comprising a fixed engagement screw having a large-diameter threaded portion that is screwed into the portion and having the same thread pitch. (2) Utility model registration claim 1, characterized in that the large-diameter screw hole of the base is only a pre-threaded hole or an incomplete thread, and the large-diameter screw of the fixed engagement screw is a tapping screw. Fixed engagement device as described in Section. (3) The fixed engagement screw has a screw head having an outer diameter larger than the large diameter thread at the end of the large diameter thread. Fixed engagement device as described. (4) The fixed engagement screw has a locking part for preventing screw tightening, which has an outer diameter larger than the thread diameter of the small diameter thread part and smaller than the root diameter of the large diameter thread part, at the end of the thread fastening of the small diameter thread part. A fixed engagement device according to any one of claims 1 to 3 of the utility model registration claims. (5) The fixed engagement device according to any one of claims 1 to 4 of the utility model registration claim, wherein the support member is an elastic body having the functions of a damper and a spring. (6) The fixed engagement device according to any one of claims 1 to 5, wherein the swinging member includes a disc playback device section of a compact disc player. (7) For fixed engagement screws, the length from the start of the effective thread of the small diameter thread section to the start of the effective thread of the large diameter thread section is longer than the distance between the base and the swinging member. The fixed engagement device according to claim 1, which is characterized by being longer than two peaks.