JPS6332788A - Small-sized tape cassette - Google Patents

Abstract

PURPOSE:To surely lock at the time of a tape not in use without requiring much space by forming a front ridge locking a guard panel in a cover-closing state and a locking piece having a projection for releasing to the side face of a cassette enclosure integratedly. CONSTITUTION:An elastic locking piece locking or releasing the guard panel 4 in the cover-closing state is formed to the side face 2a' of the cassette enclosure 3 integratedly. The locking piece 11 consists of a panel rear edge 4b' and an abutting front ridge 11a and a lock release projection 11b, and the projection 11b is pressed by a holder inner wall 12 at loading, the front edge 11a is displaced to open the cover. Then since the cover is locked in the closing state by the front edge 11a at the time of a tape not in use, no exposed or damaged tape takes place due to the open-cover of the guard panel 4 in mistake and sure locking is applied with less space.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a small tape cassette that is smaller than a standard tape cassette, and in particular, the present invention relates to a small tape cassette that is smaller than a standard tape cassette. The present invention relates to a tape force set 1 which is equipped with a locking mechanism that locks or releases the tape.

(Conventional Technique #i) With the spread of video tape recorders, recently, video cameras and video tape recorders have been combined into 63-piece units.
A so-called camera-integrated videotape recorder has been produced. In such a camera-integrated video tape recorder, a small tape cassette, which is smaller than a standard tape cassette, is used to reduce the size of the device so that it is suitable for portable use. In standard tape cassettes and small tape cassettes, the magnetic tape built into the cassette housing is pulled out from the front opening of the cassette housing during recording and playback. This front opening has
When the tape cassette is not loaded into the video recorder, a guard panel is installed on the front of the video recorder to protect the stretched magnetic tape.

FIG. 4 is a perspective view of a conventional small-sized tape cassette provided with such a guard panel, and FIG. 5 is a right side view of the small-sized tape cassette shown in FIG. 4. In this small tape cassette 1, a guard panel 4 covers a front opening 3 for drawing out a tape provided on the front surface of a cassette housing 2, and the guard panel 4 has both sides 4a, 4a'
is rotatably supported by a shaft 5 on both side surfaces 2a, 2a' of the cassette housing 2. Furthermore, on one side 2a of the cassette housing 2, there is a
A slider 6 in the form of a strip that can slide in the x and x' directions in the figure
A U-shaped plate spring 7 is attached to the O-shaped groove 2b of the side surface 2a, and the U-shaped plate spring 7 faces one end 7a of the U-shaped plate spring 7. comes into contact with the inner end 6b of the slider 6, and constantly urges the slider 6 in the direction of the front opening 3 (X direction in the figure). Further, the outer end 6a of the slider 6 is connected to the side portion 4a of the guard panel 4.
The guard panel 4 is in contact with the rear edge 4a, and is always biased toward the lid closing direction (Y direction in the figure).

When the small tape force set i~1 configured in this way is loaded into a device such as a video tape recorder or an adapter, the guard panel 4 is opened by a separate opening/closing mechanism (not shown) in this device. . However, when the guard panel 4 is rotated in the Y' direction in the figure, the rear edge 4b of the side part 4a of the guard panel 4 resists the biasing force of the U-shaped leaf spring 7, causing the slider 6 to move in the direction shown in the figure. The slider 6 and the other end 7b of the U-shaped leaf spring 7 retreat into the space of the O-shaped groove 2b,
Guard panel 4 is opened.

(Problem to be Solved by the Invention) However, the conventional small tape force sets 1 to 1 are not equipped with a locking mechanism (Ill'' shown in the figure) that locks the guard panel in the closed state like a standard tape cassette. Therefore, the guard panel 4 can be easily opened and the magnetic tape stretched over the front opening 3 of the cassette housing 2 can be exposed, creating a problem where it is easily damaged. 1
When the lid was put in a pocket or the like, the guard panel 4 caught on when the lid was taken out, making it easy to open the lid. In addition, the compact tape cassette 1, which is smaller than the standard tape cassette, is equipped with the same locking mechanism as the standard tape cassette.
This is difficult both in terms of space and cost.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides that both sides of a guard panel that opens and closes the front opening of the cassette housing are rotatably supported on both sides of the cassette housing. In the small tape cassette, the front edge contacts the rear edge of one side of the front guard panel to lock the guard panel in the closed state, and the front edge is elastically displaced inside the side of the cassette housing. do,
The present invention provides a small-sized tape cassette in which an elastic lock piece consisting of a lock release protrusion for releasing the lock is integrally formed on a side surface of the cassette casing.

(Example) An example of a small Arp cassette according to the present invention will be described below with reference to the drawings. Fig. 1 is a right side view of an embodiment showing a separate lock structure of a small tape cassette according to the present invention, and Fig. 2 is a sectional view of the lock rock structure located along the line ■-■ in Fig. 1. be. Components that are the same as those of the conventional small tape cassette shown in FIGS. 4 and 5 are designated by the same reference numerals, and detailed description thereof will be omitted.

In the small tape force sets 1 to 10, a guard panel 4 covers a front opening 3 for drawing out the tape provided on the front surface of the cassette housing 2, and the guard panel 4 has both sides 4a and 4a'. Both sides 2a, 2 of the cassette housing 2
A- is supported by a shaft 5.5-, and is configured to be freely rotatable. Furthermore, although not shown, one side 2a of the cassette casing 2 is similar to the conventional small Arp cassette 1 shown in FIG.
(The side opposite to the side 2a- shown in FIG. 1),
A slider 6 in the form of a long strip that can slide in the length direction of the side surface 2a is installed at an angle, and a U-shaped leaf spring 7 is installed in the U-shaped groove on the side surface 2a. 7
One end 7a and the other end 7b, which is opposite to each other, are in contact with the inner end 6b of the slig 6, and the slig 'f6 is always urged toward the front opening 3.

Further, the outer end 6a of the slider 6 is in contact with the rear edge 4b of the side portion (side portion opposite to the side portion 4a shown in FIG. 1) 4a of the guard panel 4, and the guard panel 4 is As shown in the figure, it is always biased in the lid closing direction (Y direction in the figure) centering on @5.5=.

Next, a locking mechanism section that locks or releases the guard panel 4 in the closed state will be described. FIGS. 23(A) and 23(B) show the plane 14 showing the locking mechanism.
1 is a diagram showing a locked state, and Figure <F3) 4 is a diagram showing a released state.

As shown in FIG. 1, on the side surface 2a of the force cellar 1 to the housing 2, which are molded of resin or the like, there is a shield 19 located behind the side 4a' of the guard panel 4 and the rear edge 4b. An elastic locking piece 11 is integrally molded.

The elastic locking piece 11 includes a front edge 11a, a lock release protrusion 11b, and a base 11c. The front edge 11a is the rear edge 4 of the guard panel 4.
As shown in FIG. 2, the lock release protrusion 11b is formed to protrude from the side surface 2a' of the cassette r body 2.

In addition, the cassette unit (side surface 2 of A2
A' is formed with a space 2b-, and the elastic locking piece 11 is connected to the side surface 28' at the root part 11c, as shown in FIGS. 3A and 3B. The cassette body 2 is displaced inwardly using the space 2b as a fulcrum.
The front edge portion 11a of the lock piece 11 is configured to be retractable at ``.

The operation of the locking mechanism configured as described above will be explained. When the small tape cassette 1-10 is not loaded into the video tape recorder or adapter, as shown in FIGS. 1 and 3(A), the side portion 4 of the guard panel 4
a- rear edge 4b= and front edge 1 of the elastic locking piece 11
1a are close to each other and face each other, so even if you try to open the lid by rotating the guard panel 4 covering it in the Y' direction in the figure, the rear edge 4b of the guard panel 4 and the elastic lock The front edge 11a of the piece 11 comes into contact with the guard panel 4.
The lid is locked in the closed state without being locked during L1.

Furthermore, when the small tape cassette 10 is loaded into a video recorder or an adapter, the inner wall (inner surface) 12 of the cassette holder touches the unlocking protrusion of the elastic locking piece 11, as shown in FIG. 3(B). 11b, the elastic locking piece 11 is elastically displaced inward of the cassette housing 2. Therefore, the elastic lock piece 1
1 is retracted into the space 2b- of the side surface 28' of the cassette housing 2, so when the open guard panel 4 is rotated in the direction of Y' in FIG. 4
The rear edge portion 4b' of the side portion 4a- of the elastic lock piece 11 rotates without contacting the front edge portion 11a of the elastic locking piece 11, and the guard panel 4 is opened and the locked state is released.

Further, when the loaded small tape cassette 10 is taken out from the video tape recorder or the adapter, a U-shaped plate provided on the side surface 2a of the cassette housing 2, although not shown, similar to the conventional one shown in FIG. The slider 6 is slid forward of the cassette housing 2 by the biasing force of the spring 7,
The outer end 6a of this slider 6 is the side 4a of the guard panel 4.
The guard panel 4 is rotated in the lid closing direction (Yh direction in FIG. 1) about the shaft 5.5' by contacting the rear edge 4b, and at the same time, the inner wall (inner surface) 12 of these cassette holders and The front edge 11a of the elastic lock piece 11, which is no longer in contact with the unlocking protrusion of the elastic lock piece 11 and returned to its original state due to the elastic force, and the rear edge 4b of the guard panel 4 are closely opposed to each other, and the guard panel 4 is locked again in the closed state.

(Effects of the Invention) In the small tape cassette of the present invention, both sides of the guard panel for opening and closing the front opening of the cassette housing are bearing on both sides of the cassette housing, and one end is attached to one side of the guard panel. A small tape cassette in which a slider is slidably attached to one side of the cassette housing, and the slider is slidably attached to one side of the cassette housing, and the slider keeps the guard panel in a closed state by always elastically abutting the guard panel. Further, an elastic lock is integrally formed on the side surface of the cassette housing to engage with and disengage from the concave notch to lock or release the guard panel in the closed state. Therefore, when this small Arp cassette is not loaded into a video tape recorder or adapter and is not in use, the guard panel is locked in the closed state, so the guard panel may be accidentally opened and the magnetic Arp may be exposed and damaged. It has a unique effect.

In addition, an elastic lock that locks or releases the guard panel in the closed state is integrally formed on the side of the cassette case.
It has the advantages of not taking up much space, being easy to assemble, and being cost effective.

Furthermore, since a lock release protrusion is formed on the elastic locking piece, the inner wall (inner surface) of the cassette holder of the video tape recorder or adapter into which this small tape cassette is loaded.
Since the elastic lock piece comes into contact with the lock release protrusion of the elastic lock piece and displaces the elastic lock to the unlocked state, a special lock release mechanism (lock release bottle) is installed in the holder for the cassette 1 of the video tape recorder or adapter. It also has the advantage of not requiring any setup.

[Brief explanation of drawings]

FIG. 1 is a right side view of an embodiment showing the lock structure of a small tape cassette according to the present invention, FIG. A> and (
B) is a plan view showing the lock ffih% section;
) is a diagram showing the locked state, 14(B) is a diagram showing the released state, FIG. 4 is a perspective view of a conventional small tape cassette, and FIG. 5 is a right side view of the small tape cassette shown in FIG. 4. Some 1, 2...Cassette housing, 2a-...Side, 2b
-...Space, 4...Guard panel, /1a-...
- Side part, 41)'... Rear edge part, 11... Elastic lock piece, 11a... Front edge part, 11b... Lock release protrusion, 11c... - Root part. f5A2 figure salt 3 figure 4 figure

Claims (2)

[Claims] (1) In a small tape cassette in which both sides of a guard panel that opens and closes the front opening of the cassette housing are pivotably supported on both sides of the cassette housing, the rear of one side of the front guard panel. an elastic lock consisting of a front edge that abuts the edge and locks the guard panel in the closed state; and a lock release protrusion that is elastically displaced inside the side surface of the cassette housing to release the lock. A small tape cassette characterized in that a piece is integrally formed on a side surface of the cassette housing. (2) The small tape cassette according to claim 1, wherein the lock release protrusion is formed on the elastic locking piece so as to protrude from a side surface of the cassette housing.