JPH0447801Y2 - - Google Patents

Description

[Detailed explanation of the invention] <Industrial application field> This invention places a CD single disc in the center,
This relates to a CD single disc adapter that can be set in a player for playing CD discs and played.

<Conventional technology> Conventionally, this type of CD player is available for playing CD single discs with a diameter of 8 cm and CD discs with a diameter of 12 cm, but due to structural constraints, it is not possible to set both types of discs in the player. It was impossible to play.

<Problems to be solved by the invention> However, in the case of a normal record player, even records with different outer diameters can be played back interchangeably on the same turntable. Similar to this kind of
There is a strong desire for a CD player that is not only capable of playing back CDs of a certain size, but also has a structure that allows it to use CDs with different outer diameters.

In order to solve these conventional problems, the present invention has developed a CD player with a diameter of 8 cm by skillfully using an adapter for a player dedicated to CD discs with a diameter of 12 cm.
The purpose is to enable the use of CD single editions.

<Means for solving the problem> The structure of the present invention for achieving the object will be explained using FIG. 1 and FIG. 2 corresponding to the embodiment. This is a performance adapter, and includes an outer ring 1 whose outer diameter is approximately the same as the outer diameter of the CD disc, and a through hole 2 whose inner diameter is slightly larger than the diameter of the program area on the CD single disc A. ' and is a ring-shaped disk consisting of an inner ring 2 which is located concentrically inside the outer ring 1 and is rotatable relative to the outer ring 1, and the inner ring 2 is The inner peripheral edge portion of the through hole 2' is structured to support the outer peripheral part a outside the program area of the CD single disc A, and the outer peripheral ring 1 has a pressing part that presses the upper surface of the outer peripheral part a of the CD single disc A. The base end portions of a plurality of pressing levers 3 having a tip portion 5 are swingably supported, and the inner ring 2 has an engaging body 4 that engages with an engaging portion 8 in the midsection of the lever 3. is formed,
Moreover, a plurality of springs 9 are stretched between the inner and outer rings 1 and 2 for biasing the tip end of the lever 3 in the direction of the through hole 2'.

<Operation> Since the present invention has such a structure, the outer ring 1 and the inner ring 2 are rotated relative to each other in the opening direction of the lever 3 (in the direction of the arrow in FIG. 1) against the tension of the spring. Then, set the CD single disc A on the through hole 2' of the inner ring 2, remove the force applied to both the inner and outer rings 1 and 2, and move the lever 3 to the center side by the restoring force of the spring 9... All you have to do is restore it, press the top surface of the outer edge of CD single disc A, and set it in the player.

<Examples> Examples of the present invention will be described below based on the drawings.

1 and 2 are diagrams showing an embodiment of the present invention. Reference numeral 1 denotes an outer ring, and the outer diameter is the same as that of a 12 cm CD disc. Reference numeral 2 denotes an inner ring, the outer periphery of which is fitted into the outer ring 1 so as to slide relative to the inner periphery of the outer ring 1, and a stage in the center on which a CD single disc A having an outer diameter of 8 cm is placed. A through hole 2' having a portion is formed. This through hole 2' is CD
It has a slightly larger diameter than the program area of single disc A. 3... is a lever that presses the outer periphery of the CD single disc A. There are three levers, and the base of each lever is pivoted to the outer ring 1 with a shaft 4' so that it can swing freely, and there is a long hole in the middle of the lever. 8 are formed and are respectively fitted to engagement shafts 4 implanted in the inner ring 2. There are three coil springs 9, and both ends of each are stretched across both the inner and outer rings 1 and 2.

The spring 9 referred to in the present invention is not limited to a coil spring, but may also be a plate spring. Further, the number of the springs 9 and the pressing levers 3 is not limited to three, but may be two or four, and in short, a plurality may be sufficient. Furthermore, the engaging part 8 and the engaging body 4 are not limited to the fitting structure between a long hole and an engaging shaft, but may also have a structure in which a protrusion protruding from the inner ring 2 comes into contact with the outer side surface of the lever 3. , a locking part such as a small hole may be formed in the inner ring 2, and a projection may be protruded from the lever 3 to lock the lever 3. In other words, when the inner ring 2 is rotated relative to the outer ring 1. , any structure may be used as long as the lever 3 swings and rotates as the lever 3 rotates.

Although the embodiments considered to be representative of the present invention have been described above, the present invention is not necessarily limited to the structure of these embodiments, and the present invention is not necessarily limited to the structure of these embodiments. It can be implemented with appropriate modification within the scope of achieving the following effects.

<Effects of the invention> As is already clear from the above explanation, the invention has the following effects:
By rotating the outer ring and the inner ring relative to each other against the tension of the spring, the pressing part at the tip of the lever is opened in the outer circumferential direction, and after placing the CD single disc in the center of the inner ring, both the inner and outer rings are rotated. The rotational force applied to the ring is removed, the lever is restored by the restoring force of the spring, the upper surface of the outer peripheral edge of the CD single disc is pressed, and the lever is fixed on the inner ring.
By doing this, we have come to expect the remarkable practical effect that a CD single disc with an outer diameter of 8 cm can be used in a CD player with an outer diameter of 12 cm. be.

[Brief explanation of the drawing]

FIG. 1 is a plan view, and FIG. 2 is a sectional view at the center of FIG. 1. In the figure, 1 is an outer ring, 2 is an inner ring, 3 is a pressing lever, 8 is an elongated hole, and 9 is a spring.

Claims (1)

[Scope of claim for utility model registration] A performance adapter for CD single edition A,
An outer ring 1 whose outer diameter is approximately the same as the outer diameter of a CD disc, and a CD single disc A whose inner diameter is approximately the same as that of a CD disc.
It consists of an inner ring 2, which has a through hole 2' having a diameter slightly larger than the diameter of the program area, is located concentrically inside the outer ring 1, and is formed to be rotatable relative to the outer ring 1. It is a ring-shaped disc, and the inner ring 2 has a structure to support the outer peripheral part a outside the program area of the CD single disc A at the inner peripheral edge portion of the through hole 2'. The base end portions of a plurality of pressing levers 3, which have a pressing portion 5 at the tip portion that presses the upper surface of the outer circumferential portion a of the single disc A, are swingably supported, and the inner ring 2 has a plurality of pressing levers 3, which have pressing portions 5 at their tip portions. An engaging body 4 that engages with an engaging portion 8 on the midsection is formed, and between the inner and outer rings 1 and 2, there are a plurality of engagement bodies that urge the distal end side of the lever 3 in the direction of the through hole 2'. Spring 9...
CD adapter with attached. According to claim 1 of the utility model registration claim, the inner peripheral edge portion of the through hole 2' is formed as a stepped portion.
CD adapter. The CD adapter according to claim 1, wherein the number of pressing levers 3 is three. The CD adapter according to claim 1, wherein the number of pressing levers 3 is four. The CD adapter according to claim 1, wherein the spring 9 is a coil spring. The CD adapter according to claim 1, wherein the spring 9 is a plate spring. The CD adapter according to claim 1, wherein the number of springs 9 is three. The CD adapter according to claim 1, wherein the number of springs 9 is four. The CD adapter according to claim 1, wherein the engaging portion 8 is a long hole. The CD adapter according to claim 1, wherein the engaging body 4 is an implanted shaft. The CD adapter according to claim 1, wherein the engaging portion 8 is a small hole and the engaging body 4 is a protrusion.