JP2559151Y2 - Tape cartridge - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape cartridge having a front cover for protecting a tape, and more particularly to an improved lock mechanism for a front cover and a reel for winding a tape. .

[0002]

2. Description of the Related Art A tape cartridge having two lock mechanisms of this type is disclosed, for example, in Japanese Utility Model Publication No. 63-499.
There is an 8 mm video cassette as disclosed in JP-A-10. In this case, as shown in FIG.
And the lock member 51 of the reel 3 are independently arranged at separate locations. As shown in FIG. 7, the lock member 14 of the front cover 6 has a locking posture for restricting the opening direction rotation of the front cover 6 in the space S between the side piece 9 of the front cover 6 and the side wall 11 of the main body case 1. The front cover on the deck side as shown in FIG. 8 is provided so as to be rotatable in the front-rear direction around the horizontal axis 16 over the horizontal axis 16 and the unlock position. The lock release operation member 22 enters the space S from the front of the main body case 1 and
The front cover 6 is unlocked by rotating the front cover 4 in the unlock direction. On the other hand, the locking tool 51 of the reel 3 abuts and engages with the engaging teeth 39 on the peripheral edge of the lower flange 37 of the reel 3 rearward between the left and right reels 3 inside the main body case 1 as shown in FIG. The spring member 5 is provided so as to be capable of linearly reciprocating in the front-rear direction over a locked position and an unlocked position.
The reel 3 is always urged to move forward, and a deck-side reel unlocking operation member (not shown) enters from the bottom of the main body case 1 and moves the lock member 51 backward to lock the reel 3. I am trying to release it.

[0003]

However, as described above, the lock members 14.5 of the front cover 6 and the reels 3
1 requires a dedicated unlocking operation member on the deck side, and the reel cartridge 51 on the tape cartridge side is independently operated by the operation member on the deck side, which complicates the structure. Become.

[0004] The present invention relates to a front lid lock device 1 as described above.
A tape cartridge 4 is provided so as to be rotatable in the front-rear direction around a horizontal axis 16 in a locked position and an unlocked position for restricting rotation of the front cover 6 in the opening direction.
By using the unlocking operation of the front lid lock mechanism to release the lock of the reel lock mechanism, the front lid unlocking operation member on the deck side can also be used for the reel unlocking operation, and the reel lock on the tape cartridge side. It is intended to simplify the structure of the mechanism.

[0005]

According to the present invention, as shown in FIG. 1, a tape 2 led out to the front side of a main body case 1 is provided.
Lid locking device 1 for locking the front lid 6 covering the lead-out portion 2a
4 faces the side wall 11 of the main body case 1 and the outside thereof
In the gap S between the side piece 9 of the front lid 6 and the locking posture for restricting the opening direction rotation of the front lid 6 and the unlocking posture , the front and rear around the horizontal axis 16 integrated with the front lid locking device 14. One
The tape cartridge provided rotatably toward you <br/> assumed. Then , the present invention relates to the reel in the main body case 1.
3 between the side wall 11 and the reel lock device 34.
In conjunction rotatably about the vertical axis 35 provided over the locking position and the unlocked position to Setto engagement, Ru a spring member 47 for biasing rotating the reel lock member 34 is always in the locked position direction. The front cover lock device 14 and the reel lock device 34 move such that the rotation of the front cover lock device 14 in the unlocking posture direction is changed to the rotation of the reel lock device 34 in the unlock posture direction and transmitted. The connection is performed by the transmission mechanism 42. As the motion transmission mechanism 42, the horizontal axis 16
The inner end is extended from the side wall 11 toward the inside of the case.
A driving piece 43 provided at the extension end of the
The drive piece 43 provided on the reel lock device 34 side to be touched
Rotation of the reel lock device 34 in the unlock direction.
Consists of a passive piece 44 that transmits instead of turning in the lock direction
I do .

[0006]

When the front lid lock device 14 is rotated in the unlocking direction about the horizontal axis 16, the driving piece 43 pushes the passive piece 44, and the reel lock device 34 is unlocked about the vertical axis 35 in the unlock direction. It turns to release the engagement with the reel 3.

[0007]

Therefore, according to the tape cartridge of the present invention, the reel lock device 34 is unlocked via the movement transmitting mechanism 42 in conjunction with the unlocking operation of the front lid lock device 14. On the deck side, only the front lid unlocking operation member is sufficient, and the reel unlocking operation is unnecessary, and on the tape cartridge side, the structure of these lock mechanisms can be simplified. Also ,
The gap between the side wall 11 of the main body case 1 and the side piece 9 of the front lid 6
S, the front lid locking device 14 is provided, and the horizontal shaft 16 integrated with the front lid locking device 14 as the motion transmitting mechanism 42.
Is formed to extend from the side wall 11 toward the inside of the case.
A driving piece 43 is provided at an end, and the driving piece 43 and the passive piece 44 are brought into direct contact . Therefore, in the main body case 1
In addition to disposing the reel lock device 34 in the restricted narrow space between the reel 3 and the side wall 11 , the drive member 4
3 is sufficient, and the tape drawn out from the reel 3 is sufficient.
It can be stored compactly so as not to interfere with the step 2 .

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an 8 mm video tape cartridge will be described with reference to FIGS. In FIG. 3, a main body case 1 is formed by abutting upper and lower cases 1a and 1b made of plastic, and a reel 3 around which a tape 2 is wound is rotatably accommodated on the left and right inside. Tape outlets 4 are formed in the front opening on the left and right sides of the front side of the main body case 1, and the tape 2 is led out from one reel 3 to the front side of the case through these tape outlets 4 and wound on the other reel 3. .

A pocket 5 in which a tape loading pin on the deck side is inserted is formed in the center of the front surface of the main body case 1 between the left and right tape outlets 4 so as to enter inward of the case. Tape 2 on the front side of body case 1
A front cover 6 that covers and protects the lead-out portion 2a is openably and closably mounted.

The front cover 6 has a front plate 7 for closing the front surface of the main body case 1 from side to side, a side piece 9 connected rearward from both left and right ends of the front plate 7, and a shaft protruding from an inner surface of the side piece 9. 10
And a left and right side piece 9
Are opposed to the front end outer sides of the left and right side walls 11 of the main body case 1 and the shaft 10 is fitted into a shaft hole 12 formed in the side wall 11, so that the shaft 10 is similar to the conventional one shown in FIGS. 7 and 8. The main body case 1 is rotatable between a posture for closing the front side and a posture for upward opening. A torsion coil spring 13 is mounted on the shaft 10 in the gap S between the side wall 11 on one side of the main body case 1 and the side piece 9 of the front lid 6 opposed thereto, and the front lid 6 is moved by the spring force. It is always biased to rotate in the closing direction.

In the space S, behind the shaft 10, a front lid locking device 1 substantially similar to the conventional one shown in FIG.
4 is incorporated. The front lid lock device 14 is a plastic molded product in which a horizontal shaft 16 protrudes from the left and right side surfaces of the head portion 15 and front and rear legs 17 and 19 are integrally connected downward from the head portion 15. A horizontal shaft 16 is spanned over a bearing portion 23 formed on the left and right sides of the joining portion of the side walls 11 of 1b, and is supported so as to be swingable in the front-rear direction around the horizontal shaft 16 and is provided behind the lock device 14. The spring member 24 is always urged to swing forward. An engaging surface 2 that engages with an engaged surface 20 of an engaged protrusion 26 provided on the inner surface of the side piece 9 of the front lid 6 at the lower end of the front leg 17 of the front lid lock device 14.
1 is formed, and a receiving surface 18 with which a front lid unlocking operation member 22 on the deck side described later comes into contact is formed on the front side of the lower end of the rear leg 19.

Thus, as shown in FIG. 7, when the tape cartridge is not in use, the engaging surface 21 of the front lid lock device 14 comes into contact with the engaged surface 20 of the front lid 6 in the closed position from below. This engagement reliably locks the front lid 6 from pivoting upward around the shaft 10.

When the tape cartridge is loaded on the deck, the front lid unlocking operation member 22 on the deck side is relatively guided from the front and formed at the lower end of the front plate 7 of the front lid 6 as shown in FIG. The notch 27 enters the gap S, and pushes the receiving surface 18 of the leg 19 on the rear side of the front lid lock 14. As a result, the front cover lock device 14 swings backward against the spring member 24, and the engaging surface 21 of the front cover lock device 14 is displaced below the rotation locus of the engaged surface 20 on the front cover side. The closing lock of the front lid 6 is released. Next, a fixing lever (not shown) on the deck side comes into contact with the notch 27 of the front cover 6, and the front cover 6 opens upward and rotates.

When the operation in the deck is completed, the front cover unlocking operation member 22 and the fixing lever are retreated to a position where they are not used, and the front cover lock device 14 is pushed forward by the spring pressure of the spring member 24 and swings. Being engaged, the engaged projection 2 of the front lid 6 being returned to the closed position by the torsion coil spring 13.
The engagement surface 21 of the front lid lock device 14 is guided in contact with an R-shaped guide surface 25 provided at 6, and the engagement surface 21 is brought into contact with the engaged surface 20 of the engaged projection 26 at the same time when the lid is closed. Engage and lock the front lid 6.

As shown in FIG. 8, a shaft 31 of a back cover 30 is swingably supported on a back cover supporting piece 29 inside the front cover 6, and the back cover 30 is used to lower the tape 2 when not in use. And the upper surface of the opening of the pocket 5 is sealed to prevent dust from adhering to the tape 2. The back cover 30 moves upward with the front cover 6 without interfering with the tape 2 at all when the front cover 6 is opened.

According to the present invention, in the tape cartridge having the lock mechanism for the front cover 6, a reel lock device 34 is provided near the front cover lock device 14 as shown in FIG. The front cover lock device 14 and the reel lock device 34 are connected to the movement transmitting mechanism 4 so that the release of the front cover 6 can be performed in conjunction with the release operation of the lock mechanism of the front cover 6.
Connect with two.

For this purpose, the reel lock device 34 is provided as shown in FIG.
As shown in FIG. 2, the inner case of the lower case 1 b protrudes from the inner surface of the lower case 1 b in the inner part of the tape outlet 4 between the front lid lock device 14 and the reel 3 adjacent thereto. It is provided rotatably about a vertical axis 35. The reel lock device 34 is provided at the tip of a lever-shaped main body 36 with a claw 40 for engaging and disengaging an engaging tooth 39 on the peripheral edge of the lower flange 37 of the reel 3, and a boss 41 for passing the longitudinal axis 35 near the rear end of the main body 36 Is formed.

On the other hand, the inner end side of the horizontal shaft 16 of the front lid lock device 14 is formed so as to extend toward the inside of the case, and a driving piece 43 is formed integrally with the horizontal shaft 16 at the extended end. Below the inner end of the extended horizontal shaft 16, a reel lock device 34 is disposed so as to intersect. The reel lock 34 has a passive piece 44 projecting upward from the middle between the boss 41 and the claw 40, and makes the passive piece 44 directly contact the driving piece 43 on the horizontal shaft 16. The reel lock device 34 includes a pin 45 protruding from a portion behind the boss 41 and the lower case 1b.
Is always urged to rotate in the direction of the locking posture by a spring member 47 hung between 46 protruding from the inner surface of the member.

Thus, when the front lid lock device 14 rotates from the locked position shown in FIG. 1A to the unlocked position shown in FIG. 1B, the driving piece 43 pushes the passive piece 44 and the reel The locking tool 34 rotates in the unlocking direction about the longitudinal axis 35 to disengage the pawl 40 from the engaging teeth 39 of the reel 3.

As a lock mechanism for the other reel 3, for example, as shown in FIG. 49, the driving piece 49 is brought into contact with the passive piece 44 provided on the reel lock device 34, and the front cover 6
When the driving piece 49 presses the passive piece 44 by the opening rotation of the reel 3, the reel lock member 34 rotates in the unlocking direction, and the pawl 40 may be disengaged from the engagement teeth 39 of the reel 3.

FIGS. 4 and 5 show a modified embodiment of the passive piece 44 of the reel lock 34. FIG. Therein, the reel lock device 34 is formed in the shape of a “<” in plan view with the boss 41 as a bending point, a claw 40 is provided on the tip side from the boss 41, and a passive piece 44 is provided on the back side from the boss 41, respectively. Front lid lock device 14
The driving piece 43 projects forward from the inner end of the horizontal shaft 16 and contacts the passive piece 44. FIG. 4A shows a locked state of the reel 3, and FIG. 4B shows an unlocked state thereof.

Other than the 8 mm video, the present invention can be similarly applied to, for example, a VHS type tape cartridge.

[Brief description of the drawings]

FIG. 1 is a plan view of a main part.

FIG. 2 is a perspective view of a main part.

FIG. 3 is an overall internal plan view.

FIG. 4 is a plan view of a main part showing another embodiment.

FIG. 5 is a perspective view of the locking device of the embodiment shown in FIG.

FIG. 6 is an overall internal plan view of a conventional example.

FIG. 7 is a sectional view taken along the line CC in FIG. 6;

FIG. 8 is a view showing a state in which the front lid is opened according to FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 2 Tape 3 Reel 6 Front lid 10 Axis 14 Front lid lock tool 16 Horizontal axis 34 Reel lock tool 35 Vertical axis 42 Motion transmission mechanism 43 Drive piece 44 Passive piece 47 Spring member

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Kazuhiro Takahashi 1-88, Ushitora, Ibaraki-shi, Osaka Hitachi Maxell, Ltd. (56) References Japanese Utility Model Showa 50-153924 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A main body case 1 containing a reel 3 on which a tape 2 is wound, an openable and closable front cover 6 for covering a leading portion 2a of the tape 2 led out to the front side of the main body case 1, and a front cover 6
The front lid 6 has a closing position covering the tape lead-out portion 2a and an open position exposing the tape lead-out portion 2a. The front lid lock device 14 is provided so as to be rotatable around the axis 10 over the posture and the side wall 11 of the main body case 1.
A horizontal axis integrated with the front lid locking device 14 is provided in a gap S between the side piece 9 of the front lid 6 facing outward and a locking posture for restricting rotation of the front lid 6 in the opening direction and an unlocking posture. 16
That it is provided rotatably in the front-rear direction around the reel lock member 34, the reel 3 and the side of the main body case 1
Between the wall 11 and the locking posture and the unlocking posture in which the reel 3 is brought into contact with and engaged with the reel 3. The front cover lock device 14 and the reel lock device 34 are provided with a biasing spring member 47. The rotation of the front cover lock device 14 in the unlock posture direction is performed in the unlock posture direction of the reel lock device 34. are in motion transmission mechanism 42 for transmitting and deflecting the rotation of the link that, the kinetic transmission mechanism 42, the inner end wall of the horizontal shaft 16 11
Extending more toward the inside of the case,
Drive piece 43 and a reel rotatable so as to contact the drive piece 43.
Unlocking direction of the driving piece 43 provided on the hook 34 side
Is rotated in the unlock direction of the reel lock device 34.
A tape cartridge, comprising: a passive piece (44) for transmitting a change in motion .