JPS6142975Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pivoting mechanism for a U-shaped member that is pivoted at both ends and rotates as a whole, suitable for small-sized tape recorders and the like.

In small equipment that involves mechanical movement, such as a small copier recorder, the support member for a member such as a cassette holder that moves a cassette from a standby position to a recording/playback position is generally U-shaped as shown in Figure 1. Both ends thereof are rotatably supported by a pair of shaft support substrates. When assembling something with this kind of configuration, if the shaft is fixed on the board side in advance, the U-shaped rotating member cannot be assembled without deforming and enlarging both ends. As shown in the figure, tap holes 3 are provided in the board 2,
A structure is used in which the rotating member 1 inserted through the collar 4 is tightened with machine screws 5. However, with this structure, the head and tip of the machine screw 5 protrude in both axial directions, which impedes miniaturization of the device, and furthermore, loosening of the machine screw 5 due to vibration etc. reduces the reliability of the device. Ta.

The present invention is an improvement on the above-mentioned points, and the shaft 15 having the E-ring insertion groove 15-1 near the tip is fixedly implanted in the base plate 12 by caulking or the like, while the shaft hole 15 of the rotating member 11 is set considerably larger than the diameter of the shaft 15, and is provided with an open slit 17 toward one end side. The width of the open slit 17 is only slightly larger than the diameter of the shaft 15. The collar 14 has a diameter that is inserted between the shaft 15 and the shaft hole 16, and a thickness that is approximately the same as that of the rotating member 11. Although the above structure has been described with respect to one end of the U-shaped rotating member 11, such as a support member of a cassette holder, the other end is also assumed to have a completely symmetrical structure.

Assembly is performed using the following steps. That is, the shaft hole 16 is inserted into the shaft 15 through the notch 17 of the rotating member 11.
After bringing it to the center of the color and aligning the center, color 1
Penetrate 4. After that, insert the E-ring 13 into the groove 15-
Insert into 1. If this procedure is repeated for the other end, the U-shaped rotating member will not fall off and will be able to rotate freely.

The above-mentioned structure is a different aspect of the above embodiment, in which both ends of a pair of U-shaped rotating members are internally connected to a pair of shaft support substrates, or a shaft is provided on the rotation member side and a shaft is provided on the shaft support substrate side. A similar effect can be obtained by providing a shaft hole with an open slit in the shaft hole. Further, as in the above-mentioned embodiment, the structure of the present invention may be used for both of the pair of rotating parts, but depending on the conditions, one of the rotating parts may be formed by simply using a shaft and a shaft hole. It is also possible to apply the configuration of the present invention to only the other rotating part.

As described above, according to the present invention, when attaching a pair of ends of a U-shaped rotating member to a corresponding pair of shaft support boards, it is possible to attach the ends without using screws or deforming or enlarging the member. This allows equipment to be made very compact, and the screws do not loosen due to vibrations, shocks, etc., so it can be used in small tape recorders, etc., and its practical effects are extremely large. It is something.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the main parts of a tape recorder, Fig. 2 is a side sectional view of the main parts of the conventional example, Fig. 3 is a side sectional view of the main parts of the present invention, and Fig. 4 A, B, and C are the main parts of the present invention. It is a perspective view showing the assembly procedure, and in the drawing, 11... U-shaped rotating member, 12... Pivotal support board,
13... E-ring, 14... Color, 15...
Shaft, 15-1... E-ring insertion groove, 16... Shaft hole, 17... Open slit.

Claims (1)

[Claims for Utility Model Registration] (1) In a device in which a U-shaped rotating member is pivotally supported by a pair of plate-shaped ends inscribed or circumscribed on a pair of pivot substrates, one of the corresponding rotating parts A shaft with an E-ring insertion groove is fixed near the tip, and a shaft hole is provided on the other side to be inserted into a collar that is inserted into the shaft,
A pivoting mechanism for a rotating member, characterized in that an open slit having a width slightly larger than the diameter of the shaft is provided from the shaft hole toward the end side. (2) A pivoting mechanism for a rotating member according to claim 1, in which the above structure is used for both of the pair of rotating parts. (3) A pivoting mechanism for a rotating member according to claim 1, in which one of the pair of rotating parts is simply a combination of a shaft and a shaft hole, and the other one uses the above structure. .