JPS61123047A - Tape cassette retaining device - Google Patents

Abstract

PURPOSE:To retain always a tape cassette with a stable retaining force by providing bending parts, which are placed on side faces of an engaging rib for preventing movement in the spring insertion direction, in both ends of a circular retaining spring. CONSTITUTION:A retaining spring 4 is inserted to recessed grooves between a projecting bank 6 of a cassette cover body 2 and a pair of guide ribs 3 and 3, which are formed on this projecting bank 6, the side of an overlap part 1, and the spring overlap part 1 is engaged with a rib 5 for preventing movement in the spring insertion direction. Bending parts 10 and 10 bent toward the center of the circle circle are placed on side faces of said rib 5. Thus, even if a force is applied to the retaining spring 4 in the rotation direction and the pulling direction, bending parts 10 and 10 are caught by side walls of the rib 5 for preventing movement to prevent rotation and slip of the retaining spring 4.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a tape cassette holding device for a sumo wrestler tape recorder.

2. Description of the Related Art In general, in a cassette tape recorder, a cassette lid body rotatably supported by a shaft relative to a tape recorder body is biased by a spring in an opening direction, and is mechanically locked when closed.

In this case, it is necessary to apply a biasing force to the tape cassette toward the tape recorder body, and the cassette lid body must be equipped with a tape force holding device equipped with a holding spring for holding down the tape force. There are many.

As shown in FIGS. 8 to 10, the conventional tape cassette holding device includes a pair of ribs 3, 3 provided on a jetty 6 of a cassette lid body 2 rotatably supported on a tape recorder body. A presser spring 4 made of a wire bent into a ring shape is inserted into the concave groove formed between the guide ribs 6 and the pair of guide ribs 3, 3.
By engaging the overlapping portions 1 at both ends of the presser spring 4 with the engagement ribs 6 protruding between the pair of guide ribs 3, the presser spring 4 is prevented from coming off, and the overlapping portions 1 are attached to the cassette lid. The pair of supports protruding from the body 2 are received by the ribs 7.7, so that the presser spring 4 is attached to the inner surface of the cassette lid body 2.
It is configured to prevent both ends from getting caught.

Problems to be Solved by the Invention 3B-1 However, in the conventional configuration, the presser spring 4 and the wrestler's cap 2 do not have a rotation prevention mechanism, so the tape cassette may be attached and detached several times or When lateral pressure is applied in the direction of arrow a, the presser spring 4 rotates in the direction of arrow a, and the first
As shown in Figure 0, the overlapping portion 1 of the presser spring 4 is separated from the rib 7, and the end 9 of the presser spring 4 bites into the rib 7 and guide rib 3, resulting in poor spring performance when pressed from the direction indicated by the arrow. The problem is that the information is lost.

However, there is a problem in that the end portion 9 of the overlapping portion 1 of the presser spring 4 is more likely to come off than the engagement rib 5, and the presser spring 4 easily comes off when pulled in the direction of arrow C.

Means for Solving the Problems The tape cassette holding device of the present invention includes a pressing spring formed by bending a wire rod into a coil shape so that the ends overlap each other, and a holding spring protruding from the inner surface of the cassette lid body, and a holding spring provided on the holding spring. the presser spring is inserted into the concave groove between the pair of guide ribs, and the overlapping portion of the presser spring is engaged with an engagement rib provided on the jetty between the pair of ribs for preventing movement of the presser spring in the insertion direction,
The presser spring is provided with bent portions located on the sides of the engagement rib at both ends thereof.

In the tape holding device of the present invention, the circular holding spring has bent portions located on the sides of the engagement ribs for preventing movement in the spring insertion direction at both ends, so that when the holding spring is attempted to rotate. When the tape cassette is pulled, the bend hits the side wall of the engagement rib, preventing it from turning and being pulled out, so the tape cassette can be held down with a stable holding force at all times.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.

A first embodiment of the present invention will be described with reference to FIGS. 1 to 3. The presser spring 4 is a ring-shaped spring made by bending a spring wire material into a circle, and both ends 10 of the overlapping portion 1 of the spring are bent toward the center of the circle.

6 - As shown in FIG. 2, this presser spring 4 is inserted between the jetty 6 of the sumo wrestler soto cover body 2 and a pair of guide ribs 3, 3 formed on the jetty 6 from the overlapping portion 1 side of the spring 4. 1, and as shown in FIG. 1, the spring overlapping portion 1 is engaged with the rib 5 for preventing movement in the spring insertion direction. Further, a bent portion 10°1o in the direction of the center of the circle is located on the side surface of the movement prevention rib 5. Therefore, even if force is applied to the presser spring 4 in the rotational direction and the tensile direction, the bent portion 10.10 hits the side wall of the movement prevention rib 5 to prevent the presser spring 4 from rotating or coming off.

4 to 7 show other embodiments of the present invention, in which one or both sides of the bent portion 10.10 of the presser spring 4 are directed outward from the circular center of the spring, or outward and inward. It is bent in the radial direction, and has a structure that functions similarly to the above embodiment.

Effects of the Invention As described above, according to the tape cassette holding device of the present invention, a holding spring is formed by bending a wire into a coil shape so that the ends thereof overlap each other in a 6-beam shape, and the holding spring is protruded from the inner surface of the cassette lid body. An engaging rib is inserted into the groove between the spring and a pair of guide ribs provided on the jetty, and the overlapping portion of this presser spring is provided on the jetty between the pair of ribs to prevent the presser spring from moving in the insertion direction. The presser spring has bent portions located on the sides of the engaging rib at both ends, so that the presser spring will not come off even if force is applied to the presser spring in the rotation direction or the pull-out direction. A stable presser foot force can always be applied to the tape force center.
This is extremely advantageous in practice.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a tape cassette holding device of the present invention, Fig. 2 is an assembled perspective view of the same device, Fig. 3 is a perspective view of a cassette tape recorder, and Fig. 4 is a perspective view of another embodiment of the present invention. 5 is an assembled perspective view of the same device, FIG. 6 is a perspective view of still another embodiment of the present invention, FIG. 7 is an assembled perspective view of the same device,
FIG. 8 is a perspective view of a conventional tape cassette holding device, and FIGS. 9 and 10 are assembled perspective views of the same device. 7 Bay 1...Overlapping part, 2...Cassette lid body, 3...Guide rib, 4...Pressure spring, 5...For preventing movement Engagement rib, 10... bending part. Name of agent: Patent attorney Toshio Nakao and one other person C

Claims (1)

[Claims] A presser spring made of a wire bent into a ring shape so that its ends overlap each other is inserted into a groove between a jetty protruding from the inner surface of the cassette lid and a pair of guide ribs provided on the jetty, and the presser spring The overlapping portions of are engaged with engagement ribs provided on the jetty between the pair of ribs for preventing movement of the presser spring in the insertion direction, and the overlapping portions of A tape cassette holding device characterized by being provided with a bending portion.