JPH02185778A - Reel lock member in tape cassette - Google Patents

Abstract

PURPOSE:To prevent the dispersion of each part even if a cut loss is generated in a hinge part by providing integrally a connecting part for stretching over the parts of both its sides in accordance with the hinge part. CONSTITUTION:The reel lock member is provided integrally with a pair of engaging lever parts 5, 6 which can be bent by hinge parts 8-12 formed by a groove, engaged to a supply reel and a take-up reel and lock them, and a release lever part 7 for releasing a lock of the reel executed by these detaining lever parts 5, 6. In this case, in accordance with each hinge part 8-12, a connecting part 30 for stretching over the parts of both its sides is provided integrally. That is, the parts of both sides of the hinge part are linked by a connecting part in advance. In such a manner, even if the hinge part suffers a cut loss, it does not occur that each part of the engaging lever part and the releasing lever part is dispersed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a reel lock member provided in a videotape cassette or the like.

[Summary of the invention]

The present invention provides an integrally molded reel lock member that has hinge parts for bending at multiple locations, and by providing a connecting part to connect the parts on both sides of each hinge part in advance, the hinge part can be broken in the unlikely event that the hinge part breaks. This prevents the parts from dispersing even when

[Conventional technology]

Tape cassettes, particularly video tape cassettes, are equipped with a reel locking member for locking a supply reel and a take-up reel to prevent unnecessary rotation of the magnetic tape when it is stored when not in use.

Generally, the reel locking member in this tape cassette consists of a pair of locking levers that engage and lock the supply reel and take-up reel, and a release lever that releases the lock of the reel by this locking lever. When not in use, a pair of locking levers engage with both reels to protect the magnetic tape from unnecessary rotation, and when a tape cassette is loaded into the recording/playback device, the magnetic tape is protected from unnecessary rotation. The release lever is operated by the release mechanism on the side, and the reel is unlocked by the locking lever.

By the way, in recent years, in this type of reel lock member,
Reduction in the number of parts 1. From the viewpoint of ease of assembly, there are models in which the locking lever and the release lever are integrally molded (Utility Model Publication Act 60-1).
Publication No. 7107).

That is, this reel lock member is formed into a shape that integrally has a locking lever part and a release lever part, and when assembled into a predetermined shape by bending it at a plurality of hinge parts, it is attached to a predetermined assembly part of the cassette case. It was designed to be incorporated into.

[Problem to be solved by the invention]

However, in the conventional integrated molded slide lock part, the thin hinge part breaks off due to fatigue, impact, etc. while the tape cassette is being used, and as a result, the locking lever part and the release lever part are damaged. There was a risk that the various parts of the magnetic tape would be scattered and interfere with the running of the magnetic tape or damage the magnetic tape.

The present invention has been made in view of the above, and an object of the present invention is to provide an integrally molded reel lock member that can prevent the parts from dispersing even if the hinge part is damaged.

[Means to solve the problem]

To achieve the above object, the present invention provides a pair of locking lever portions that are bendable by a hinge portion formed by a groove and that engage and lock a supply reel and a take-up reel; A reel locking member integrally having a release lever part for releasing the lock of the reel by the lever part, which is integrally provided with a connecting part spanning parts on both sides corresponding to each hinge part. It is.

[Effect]

With this configuration, the parts on both sides of the hinge part are connected in advance by the connecting part, so even if the hinge part should break, the locking lever part and the release lever part will not be separated. .

(Example〕 Hereinafter, the present invention will be described in detail with reference to the drawings.

In the figure, C shows the videotape cassette as a whole, (1) shows the lower half of the cassette case, (2) and (3)
are a supply reel and a take-up reel around which the magnetic tape T is wound, and locking teeth (2a) and (3a) are formed on the outer periphery of the supply reel (2) and take-up reel (3), respectively. There is.

A reel lock member (located in the middle between the supply reel (2) and take-up reel (3)
4) is provided. This reel lock member (4) is molded from a synthetic resin such as polypropylene into a developed shape forming a substantially E-shape as shown in FIG.
and a locking lever part (5) that engages and locks (3).
) and (6), and a release lever part (7) for releasing the lock of the reel by the locking lever parts (5) and (6).
).

That is, in this reel locking member (4), the tips of the protruding pieces on both sides thereof serve as locking lever parts (5) and (6), and the distal end of the central protruding piece serves as a release lever part (7). and
It is assembled by bending vertically in the directions of arrows a and b at the hinge parts (8) and (9) formed by V-grooves provided at left-right symmetrical positions, respectively, and is assembled into the predetermined assembly position of the cassette case. It will be done.

Further, the locking lever parts (5) and (6) can be bent at hinge parts (10) and (11) formed by V-shaped grooves, respectively, and can be bent laterally, that is, by the release lever part (7), as will be described later. The release lever part (7) is also bent at the hinge part (12) formed by the V-shaped groove. It is rotated in the vertical direction by a release pin inserted from the recording/reproducing apparatus main body side, as will be described later.

Also, a fixing hole (
13) is bored, and by fitting this fixing hole (13) into a fixing pin (14) protruding from the bottom of the lower half (1) of the cassette case, the reel lock member (4)
is positioned at a predetermined assembly position of the cassette case. still(
Reference numeral 15) denotes a presser pin protruding from the upper half side of the cassette case, and the reel lock member (4) is pressed and fixed at a predetermined assembly position by the presser pin (15).

Furthermore, the release lever part (7) of this reel lock member (4)
) is provided with a pair of left and right pressing arms (16) and (17) protruding from the locking lever portions (5) and (6).
Arms (18) and (19) are protruded from the receivers, respectively, and when the reel lock member (4) is assembled and attached to the cassette case, the receivers are provided with arms (18) and (19).
), the tips of the pressing arms (16) and (17) correspond to and come into contact with the front part of the pressing arms (16) and (17), respectively.

Also, (20) is a torsion coil spring attached to the fixed pin (14) of the lower half (1), and both ends of this torsion coil spring (20) are supported by arms (18).
and (19) are respectively locked in engagement grooves (18a) and (19a) formed on the rear surface, and the biasing force of this torsion coil spring (20) always keeps both locking lever parts (5) and ( 6) have their tip claws (5a) and (6), respectively.
a) is urged to rotate in a direction in which it engages with locking teeth (2a) and (3a) of both reels (2) and (3).

When the tape cassette is loaded into the recording and reproducing apparatus main body, a release bottle (not shown) is inserted from the recording and reproducing apparatus main body side through the insertion hole (21) formed in the lower half (1), and the reel lock member Press the release lever part (7) of (4), so that the release lever part (7) is connected to the hinge part (12).
is rotated upward so that the pressing arms (16) and (17) press the arms (18) and (19), thereby causing the locking lever parts (5) and (6) to engage the hinge parts, respectively. At (10) and (11), the reels (2) and (3) are rotated in a direction away from the locking teeth (2a) and (3a), and the reel locks are released.

The reel lock member of this example configured in this way (
4), each hinge part (8), (9), (10)
, (11).

(12), the connecting portions (3
0) are integrally formed. The connecting portions (30) have a semicircular ring shape with a small diameter, and are protruded in pairs on the edge surfaces on both sides of the hinge portion, and each hinge portion (8) (12
), the parts that straddle both sides are connected in an auxiliary manner.

In this way, by connecting the parts spanning both sides of each hinge part (8)...(12) in advance with the connecting part (30), it is possible to prevent the hinge part (8) from accidentally breaking during use of the tape cassette. Even if any of (12) to (12) is broken, the parts on both sides of the hinge part will not be completely separated, and therefore the locking lever parts (5) and (6) and the release lever part (7) will not be completely separated.
) are not dispersed, so there is no fear that the dispersion pieces of the reel locking member (4) will interfere with the normal running of the magnetic tape or damage the magnetic tape, as in the conventional case.

The connecting portion (30) is formed to have a smaller diameter than the thickness of the reel locking member (4) and has a certain length, so that the release lever portion (force and locking lever portion)
5) There is almost no effect on the rotation operation of (6), that is, the locking/unlocking operation of the reel.

As described above, since the glue lock member of the present invention connects the parts spanning the hinge part with the connecting part in advance, even if the hinge part is damaged, each part of the locking lever part and the release lever part can be connected in advance. This prevents the dispersion of the reel locking member from interfering with normal running of the magnetic tape or damaging the magnetic tape.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the reel locking member of the present invention in a developed state (molded state), FIG. 2 is a plan view of the videotape cassette with the upper half removed, and FIG. The figure is a partially cutaway perspective view of the main part. In the figure, (4) is the reel lock member, (5) and (6) are the locking lever parts, (7) is the release lever part, (8), (9)
, (10), (11). (12) is a hinge portion, and (30) is a connecting portion.

Claims (1)

[Claims] A pair of locking lever portions that are bendable by a hinge portion formed by a groove and that engage and lock the supply reel and the take-up reel, respectively, and a locking lever portion for releasing the lock of the reel by the locking lever portion. 1. A reel lock member for a tape cassette, characterized in that a reel lock member is integrally formed with a release lever portion, and a connecting portion is integrally provided corresponding to the hinge portion and spanning portions on both sides of the hinge portion.