JPS62220474A - Case for tape - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a case used for storing and transporting magnetic tape such as video tape wound on a reel, film tape for movies, and the like.

[Conventional technology]

This type of tape case is required to be able to be opened and closed easily and to be locked in the closed state. An example thereof is shown in Japanese Patent Publication No. 52-13929.

To explain this conventional example with reference to the accompanying drawings, a cylindrical socket 4 for externally fitting and supporting a tape reel 6 is provided upright at the center of the inner wall of the case body 1, and an opening 8 of a different diameter is provided at the upper end of the socket 4.
form. On the other hand, the lid case 2 fitted to the case body 1 is provided with a rotor 13 that is rotatably operated from the outside on the central boss portion 9.
An engaging portion 15 is provided that can be inserted into and removed from the different diameter opening 8 of the socket 4 only when the socket 3 assumes a fixed rotational posture. and,
The rotor 13 has a plurality of engagement recesses (23a, 23b, 23C) formed in the central boss part 9 in the rotational phase in which the engagement part 15 is inserted and engaged with the opening 8 of the socket 4.
) is provided with an opening/socket claw 19 that selectively engages one of the openings/claws 19 so that the lock can be released from the outside of the case.

There, the lock pawl 19 is provided directly on a rotary operation knob 16 provided on the rotor 13.

The unlocking operation was performed by sliding the knob 16 linearly along the surface of the lid case 2.

[Problem that the invention seeks to solve]

However, in the conventional example mentioned above, when removing the lid case with the lid closed, the user first pinches the knob and slides it to release the lock, and then continues to rotate the knob while maintaining this unlocked state. I will do it. In this case, when the force in the sliding direction is loosened during the rotation operation, the knob is returned by force and locked, and the unlocking operation must be performed again. Also, if you forcibly turn the knob while it is slightly turned back.

There was a risk of damage to the tip of the locking pawl. Furthermore, if the knob is strongly slid in the unlocking direction, the next time the knob is rotated, the knob becomes distorted and a large rotational force is required.

The present invention solves the problems of the conventional structure.

The purpose is to provide a tape case with good operability in opening the lid.

[Means for solving problems]

In the present invention, in the tape case having the above-described basic structure, a push-in button 2 linked to the lock claw 19 is provided on a part of the rotary operation knob 16 integrated on the upper part of the rotor 13.
2, and when the button 22 is pressed, the lock pawl 19 is retracted in the unlocking direction.

[Effect]

In such a case, to open the locked case, pinch the knob 16 and press the button 22 provided on a part of the knob with your other finger to release the lock.

As it is, rotational force is applied to the knob 16 to rotate the rotor 13 to the open position. In this case, since the mechanism for applying rotational force to the knob 16 and the finger for pressing the button 22 are different, the button pressing force is difficult to loosen when the button is rotated nine times.

〔Effect of the invention〕

Therefore, according to the present invention as described above, when moving from a lock release operation to a rotor rotation operation.

This prevents the unlocking operation from loosening and locking again, making handling even more nimble and easy.

Further, there is no risk of damaging the lock pawl 19 by performing a rotation operation with the lock partially engaged.

〔Example〕

The proposed case consists of a case body 1 with a depth sufficient to accommodate a tape reel, and a lid case 2 that is fitted externally to close the top surface of the opening of the case body 1. Both of these are plastic molded products, and the case body 1 has a handle 3 at one corner.

The case body 1 has a cylindrical socket 4 erected in the center of its inner wall, and a freely rotatable receiver is fitted with the lower half of the hub of the tape reel 6 via a ring 5. Supported. An opening 8 of different diameters is formed at the upper end of the socket 4 and has a pair of notches 7 at diagonal positions of the circular hole.

The lid case 2 has a cylindrical boss portion 9 protruding from the inner surface of its center portion, which faces the socket 4 concentrically when the lid case 2 is closed. The upper half of the reel hub is externally supported via the ring 10. Further, backing rings 11 and 12 for sealing are fitted and fixed at the lower end surface of the boss portion 9 and deep inside the peripheral fitting groove of the lid case 2, respectively.

The central boss portion 9 of the lid case 2 is provided with a locking means for closing the lid and a release operation means therefor. Let me explain the details next.

First, the interior of the boss portion 9 is formed into a lower wedge shape with an open upper surface, into which a cup-shaped rotor 13 is rotatably fitted. The lower surface of the rotor 13 has a cylindrical protrusion 13a with an outer diameter that can be fitted into the circular hole of the opening 8 of the socket 4,
A stopper ring 14 externally fitted onto the protrusion 13a prevents the mouthpiece 13 from being removed upward from the boss portion 9.

At a diagonal position on the outer circumference of the lower end of the cylindrical protrusion 13a.

A pair of engaging parts 15, 15 corresponding to the notches 7, 7 of the opening 8 of the socket 4 are provided protrudingly, and by rotating the rotor 13, the engaging parts 15, 15 are connected to the notches 7, 7. The insertion and removal of the cylindrical protrusion 13a into the opening 8, that is, the attachment and detachment of the lid case 2 to and from the case body 1, is permitted only when the cylindrical protrusion 13a is placed in a predetermined rotational position facing the opening 8.

Also, after inserting the cylindrical protrusion 13a into the opening 8.

By rotating the rotor 13, the lid case 2 is prevented from coming off from the case body 1.

The rotor 13 has a rotary operation knob 16 integrally connected to the center of the cup portion along the diameter direction.

A locking block 18 is slidably incorporated into a groove 17 formed inside this knob 16.

A lock pawl 19 is connected to one end of the block 18, and the tip of the lock pawl 19 can penetrate the peripheral wall of the cup portion of the rotor 13 and move in and out. A compression spring 20 interposed in the groove 17 presses and biases the lock pawl 19 so that it always protrudes outward from the peripheral wall of the rotor 13.

Note that the block 18 is connected to the knob 16 as shown in FIG.
The spacer 16a is fitted into the upper part of the housing and fixed by ultrasonic welding or the like.

In the groove 17 formed in the knob 16, the lock pawl 1
A push-in button 22 that can swing up and down around the fulcrum pin 21 is built into one end of the block 9, and an arm 22a connected inward from the button 22 is in contact with one end surface of the block 18. As the block 18 is biased, the button 22 is constantly pushed up and swung via the arm 22a as shown in FIG. The upward swing limit of the button 22 is restricted by contact with the spacer 16a of the knob 16, and at this swing limit, the top surface of the button 22 is flush with the top surface of the knob 16.

Also, at the limit of this upward swing, the mouth/claw 19 is in a state of protruding from the rotor 13, and by pressing the button 22 and pushing the block 18 toward the other end against the spring 20, The lock claw 19 can be advanced.

6 and 7, the inner peripheral surface of the boss portion 9 of the lid case 2 has three engagement recesses 22a, 23b, and 23c into which the lock claw 19 is engaged. The first engagement recess 23a corresponds to when the rotor 13 is at the open position (OPEN) O where the cylindrical protrusion 13a is inserted into and removed from the opening 8, and the second engagement recess 23b corresponds to the open position 0. The rotor 13 rotates 90 degrees clockwise from the closed lid position 1ffi.
(CLO3ED)C, and the third engagement recess 23c is further rotated 45° clockwise to the lock position (LOCKE).
D) Corresponds to L.

In FIG. 7, the engagement recess 23a at the open position O is clockwise, and the engagement surface in the direction is formed as an inclined surface. 19 is forcibly retracted by the cam action of the inclined surface.

The engagement recess 23b in the closed lid position C has both engagement surfaces in two circumferential directions formed as inclined surfaces, and can be rotated in either forward or reverse direction without a lock release operation. Engagement recess 23 in lock position
C is formed into a rectangular shape, and the rotor 13 cannot be rotated in the opening direction unless the lock pawl 19 is retracted.

Each rotational position of the rotor 13 is indicated by an indicator 24 attached to the upper surface of the rotor 13 and an indication 25 attached to the upper surface of the lid case 2.
It can be visually recognized from the outside by comparing with a, 25b, and 25c.

In FIGS. 8 and 9, the lower end of the cylindrical protrusion 13a has a rotor 13 in contact with the engaging parts 15, 15.
It has a stopper 26 that restricts the rotation range of the. Also,
The lower surface 4a of the earthen wall of the socket 4 is formed into a gently inclined cam surface, and when moving from the open position 0 to the closed position C, the rotor 13 is slightly (approximately 1 day) pulled down via the engaging portion 15. The backing rings 11 and 12 are tightened and deformed to tightly connect the case body 1 and the lid case 2.

Now, adjust the rotor 13 to the open position ○, attach the lid case 2 to the case body 1, and then move the rotor 13 to the closed position C.
You can keep the lid closed by rotating it.

If the rotor 13 is further rotated to the lock position, the rotation of the rotor 13 is automatically locked. Conversely, when opening the knob 16 in the locked position as shown in FIG.
For example, while pressing the button 22 with your index finger to release the lock, pinch the knob 16 with your thumb and middle finger and rotate it counterclockwise.

[Other actual flow side]

Although the illustrated example is as described above, the present invention is not limited thereto. For example, the rotor 13 may be rotatable only between two positions, the open position O and the closed lid position C, and may be locked at the closed lid position C. The lock claw 19 can be moved up and down, and the engagement recess (23a 23
b23c) may be formed on the upward facing surface of the inner wall of the boss portion 9. A push button 22 can also be provided on the lateral side of the knob 16.

[Brief Description of the Drawings] The drawings show an embodiment of the tape case according to the present invention, and FIG. 1 is a longitudinal cross-sectional view with the lid closed, and FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1. Figure 3 is a vertical sectional view of the main parts in the unlocking state, Figure 4 is a perspective view of the exterior in the disassembled state,
Fig. 5 is a perspective view of the exterior with the lid closed, Fig. 6 is a partially cutaway plan view of the rotating operation portion of the rotor with the lid closed, and Fig. 7 is a perspective view of the exterior with the lid closed.
The figure is a cross-sectional plan view showing the rotation locking means of the rotor in a closed state, and FIG. 8 is a sectional view taken along the line B--B in FIG. 1. FIG. 9 is an enlarged developed view illustrating the engagement relationship between the rotor and the socket. 1... Case body. 2...Lid case. 4...Socket. 6...Tape reel. 8...Opening. 9...Boss department. 13...Rotor. 15...Engagement part. 16...knob. 19...Lock claw. 20...Spring. 22...Push button. 22a...Arm. 23a, 23b, 23c...Engagement recesses. Inventor Shun Amaike
Figure 5 Figure 4

Claims (1)

[Claims] A cylindrical socket 4 having an opening 8 of different diameters is provided upright in the center of the inner wall of the case body 1, and a rotor 13 is rotated from the outside to the central boss 9 of the lid case 2 that is fitted into the case body 1. The rotor 1 is operably provided at the lower end of the rotor 13.
An engaging portion 15 is provided that can be inserted into and removed from the different diameter opening 8 of the socket 4 only when the rotor 1 is in a certain rotational position.
3 is provided with a lock pawl 19 that engages and disengages from the engagement recesses (23a, 23b, 23c) formed in the central boss part 9 in the rotational phase when the engagement part 15 is inserted into and engaged with the opening 8 of the socket 4. A push button 22 linked to the lock claw 19 is provided on a part of the rotary operation knob 16 integrated on the upper part of the rotor 13, and the lock claw 19 is unlocked by pushing the button 22. A tape case characterized by being configured so that it can be moved in and out of the case in any direction.