JPH0424497Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a magnetic tape device such as a video tape recorder (VTR) suitable for outdoor use.

Prior Art It is convenient to use a VCR for outdoor use if it has a watertight or dustproof structure. Conventional general VTR
However, although it has a lid that covers the cassette loading/unloading section, this is not a lid that covers the cassette loading/unloading port in a watertight manner. On the other hand, conventional cassette type VTRs have an eject button. Therefore, there is a risk that water or dust may enter from the eject button.

Purpose of the Invention An object of the present invention is to provide a magnetic tape device that can easily protect the inside of the device.

Structure of the Invention The present invention to achieve the above object provides a magnetic tape device configured to perform recording or playback by inserting a magnetic tape cassette through an opening provided in a container, in which the opening is closed. an opening/closing lid formed in a shape and rotatably attached to the container;
an elastic body interposed between the opening/closing lid and the container and arranged to surround the opening so as to close the opening in a watertight or dustproof state when the opening/closing lid is closed; and an elastic body disposed to surround the opening. a locking means for locking the opening/closing lid so as to keep the opening/closing section closed; and an ejection operating lever disposed inside the opening/closing lid and ejecting the cassette to a position where it can be taken out in response to opening of the opening/closing lid. The present invention relates to a magnetic tape device characterized by comprising:

Effects of invention The present invention has the following effects.

(a) Since the elastic body is arranged to surround the opening and to be interposed between the opening/closing lid and the container, the opening can be closed in a watertight or dustproof state.

(b) Since a locking means for the opening/closing lid is provided, watertight or dustproof conditions can be maintained reliably.

(c) Since the ejection device lever is placed inside the opening/closing lid, a good watertight or dustproof condition can be obtained.

Embodiment Next, a VTR according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7. This VTR has a watertight and dustproof structure for outdoor use, and is configured to start and end recording or playback with simple operations. FIG. 1 shows a part of the container 1, that is, the housing of the VTR main body with the lid open, and FIG. 2 shows the lid 2 with the lid open. The container 1 is provided with an opening 4 for attaching and detaching a cassette 3 and an opening 6 for leading out an inject operating rod 5. These two openings 4, 6 are closed when the lid 2 is closed as shown in FIG.

The lid 2 is rotatably mounted on a shaft 9 supported by a pair of bearings 7 and 8 provided on the outside of the main container 1. Reference numeral 10 denotes an opening/closing knob, which is rotatably supported on the lid 2 for locking operation. In order to keep the lid closed even in the unlocked state, a recess 58 is provided in the main container 1, and a protrusion 57 that frictionally engages with the recess 58 is provided on the lid 2 side.

3 and 4 are enlarged side views showing the container 1 and the lid 2 taken along the line AA' in FIG. 2, and the interior of the container 1. Note that the loading mechanism and ejecting mechanism for the cassette 3 in the container 1 are schematically shown. As is clear from FIGS. 3 and 4, inside the lid 2 there is an opening 6 for inserting a cassette attachment/detachment opening 6 and an ejector lever 5.
Elastic bodies 11 and 12 are fixedly attached thereto to seal the surrounding area watertightly and dustproofly.

The eject operating rod 5 is a plate-like connecting rod that connects the eject lever 13 and the lid 2. One end thereof is rotatably connected to the projection 14 on the inside of the lid 2 by a shaft 15, and the other end is connected to the lever 13. They are rotatably connected by a pin 16. The eject lever 13 is rotatably supported by a fixed shaft 17 and has a U-shaped engagement portion 20 for engaging a pin 19 protruding from the side surface of the cassette holder 18.

The cassette 3 is inserted horizontally into the opening 4 as shown by the arrow 21 in FIG. 3, and during recording and reproduction, the magnetic tape is pulled out from the cassette and the tape is run. It is something. Therefore, in this embodiment, the cassette holder 18 holding the cassette 3 receives the cassette 3 at the position shown in FIG. 3 and then lowers to the tape running position shown in FIG.

When the lid 2 is opened counterclockwise as shown in FIG. 3 with the cassette 3 loaded in the tape running position as shown in FIG. 4, the eject operating rod 5 is pulled by the lid 2 and moves to the left. Lever 13 rotates clockwise. As a result, the lever 13 is connected to the U-shaped engaging portion 20.
The pin 19 is pushed upward, and the cassette 3 moves upward together with the holder 18, allowing it to be taken out. Note that the cassette 3 is pushed out to the left by the movable body 27 when ejected.

In FIGS. 3 and 4, 22 is a fixed top plate, and 23 is a fixed side plate.
The side plate 23 is provided with guide holes 25, 26 for vertically guiding pins 19, 24 protruding from the side surface of the cassette holder 18. 27 is a movable body for pressing the cassette 3 to the left when ejecting it, and includes a cassette pressing part 27a and an upper surface part 27.
b, a side surface portion 27c, etc., and is engaged with the upper surface plate 22 of the main body by a pin 28 implanted in this upper surface portion 27b so as to be movable in the left and right direction. Further, as shown in FIG. 5, the movable body 27 is biased to the left by a spring 29.

FIG. 5 schematically shows a mechanism for pushing the cassette 3 to the left and a mechanism for moving the cassette 3 downward to the tape running position. 5 is a rotary plate 30 for moving the cassette 3 and holder 18 downward, and the fixed shaft 31
It is rotatably attached to the pin 24 and is engaged with the pin 24 by a U-shaped engagement portion 32. When the rotary plate 30 is rotated clockwise by a drive mechanism 33 indicated by a block, the pin 24 is pressed downward and the cassette 3 together with the holder 18 is moved to the tape running position. The drive mechanism 33 is associated with the movable body 27 in order to make the initiation of movement of the pivot plate 30 responsive to the cassette 3 being fully inserted. That is, by inserting the cassette 3, the moving body 27 is moved against the spring 29.
The drive mechanism 33 is configured to operate when the drive mechanism 33 is moved to the position shown in FIG. In addition,
The moving body 27 is maintained in the position shown in FIG. 4 even after the cassette 3 has been moved down as shown in FIG. This is because the pin 19 engages with the left edge of the side surface 27c of the movable body 27 and prohibits the movable body 27 from moving to the left.

6 is a partially cutaway plan view showing an enlarged view of the locking mechanism using the knob 10 shown in FIG. 2, and FIG. 7 is a front view showing the locking mechanism shown in FIG. 6 with the lid 2 omitted. As is clear from these drawings, a lock engagement piece 35 is fixed to the tip of the shaft 34 of the knob 10, which is rotatably and watertightly supported by the lid 2. An engaging portion 36 is provided at one end of the engaging piece 35 by bending, and this engages the engaging piece 3 provided on the device main body side.
It is locked by 7. Note that the lock engagement piece 35 is biased counterclockwise by a spring 38.
The locking piece 37 is rotatably supported by a shaft 39 in FIG. 7, and is biased counterclockwise by a spring 40. Further, the locking piece 37 is engaged with a lock release lever 42 via a spring 41. Release lever 42
has a pressed portion 43 at one end thereof, and a pressing piece 45 that is engaged with a tape draw-out and retraction mechanism 44.
When the pressed portion 43 is pressed, it rotates clockwise about the shaft 46 in FIG. Therefore, the lock is always released when the tape is being drawn into the cassette 3.

Reference numeral 47 shown in FIGS. 6 and 7 is a support metal fitting, which is fixed to the lid 2. Reference numeral 48 denotes a stopper, which is formed integrally with the support fitting 47 and is a portion that limits the rotational position of the lock engagement piece 35 in the clockwise direction. The support fitting 47 has a pair of bent parts 49 and 50.
cassette pressing rollers 53 and 54 are rotatably attached to shafts 51 and 52 supported therein. A pair of rollers 53 and 54 are connected to the cassette 3
This is to press it to the right in Fig. 3 when loading. Reference numerals 55 and 56 in FIG. 6 are a pair of reel stands.

Next, the handling method and operation of this device will be described.

When loading the cassette 3, load the cassette 3 with the lid 2 open as shown in Figures 1 and 3.
is inserted into the holder 18 through the opening 4. In this embodiment, since cassette pressing rollers 53 and 54 are provided, it is not necessary to manually push the cassette 3 to the final position. When the cassette 3 is pushed in by hand to a position where it can be inserted, the lid 2 is turned clockwise as shown in Fig. 3 to close it, and the rollers 53 and 54 press the back of the cassette 3, causing the cassette 3 to be inserted deeper. Ru. Then, the front surface of the cassette 3 presses the movable body 27 to the right against the spring 29 shown in FIG. 5, and moves the movable body 27 to the position shown in FIG. When the movable body 27 moves to the position shown in FIG. 4, the drive mechanism 33 shown in FIG.
Then, the cassette 3 is lowered to the tape running position, and the reels in the cassette 3 are moved to reels 55 and 5 in FIG.
It engages with the reel shaft of No. 6 and becomes ready for tape running.

When you close the lid 2 and operate the play switch (not shown), the tape is pulled out from the cassette 3.
Tape running begins. As a result, the clockwise pressure of the lever 42 by the pressing piece 45 is released by being connected to the tape drawing/retracting mechanism 44 shown in FIG. It will be in the lock position shown in Figure 7.
Then, when the knob 10 is turned clockwise to the lock position in FIG. 2, the locking piece 37 is pressed clockwise in FIG. 7, and the engaging portion 36 engages with the hook of the locking piece 37. As long as the tape is pulled out from the cassette 3, the engaged state between the engaging piece 35 and the locking piece 37 is maintained.

When recording or playback is finished and the tape is drawn into the cassette 3, the pressing piece 45 connected to the tape drawing mechanism 44 rotates the lever 42 clockwise, and the locking piece 37 also rotates clockwise in FIG. The lock with the engagement piece 35 is released. As a result, the knob 10 returns to the open position shown in FIG. 2 by the force of the spring 38. Even when the lock is released, the lid 2 and the main container 1 are frictionally engaged with each other by the convex portion 57 and the concave portion 58, so that the closed state is maintained unless the lid 2 is opened by hand.

To take out the cassette 3, pull the knob 10 and rotate the lid 2 counterclockwise as shown in FIG. As a result, the eject operating rod 5 moves to the left as shown in Fig. 3, the lever 13 rotates clockwise, and the holder 18 holds the cassette 3 and moves from the position shown in Fig. 4 to the position shown in Fig. 3. . When the holder 18 is pushed up to the position shown in FIG. 3, the pin 19 also rises along the edge of the side surface 27c of the movable body 27. When the pin 19 rises to the notch 59 of the movable body 27, the restriction of the movable body 27 by the pin 19 is released, the movable body 27 moves to the position shown in FIG. 5 by the force of the spring 29, and the pressing part 27a Push out cassette 3.

As is clear from the above, this embodiment has the following advantages.

(A) Since the lid 2 is provided to cover the opening 4 in a watertight and dustproof manner, it is possible to provide a VTR suitable for outdoor use.

(B) Since the eject operation rod 5 is connected to the lid 2,
It becomes unnecessary to provide a special eject button, etc., and the configuration is simplified. Moreover, the cassette can be ejected only by opening the lid 2.

(C) A knob 10 is provided on the lid 2, and a lock engaging piece 35 is attached thereto so that the lock is not released while the tape is being pulled out, so damage to the tape can be prevented.

(D) Since the cassette pressing rollers 53 and 54 are attached to the lid 2, it is possible to reliably insert the cassette 3 into the container to a predetermined position.

Although the embodiments of the present invention have been described above, the present invention is not limited thereto, and can be modified, for example, as follows.

(a) The elevating mechanism for the cassette 3 may be replaced with various known mechanisms.

(b) The lid 2 may be constructed solely for the purpose of dustproofing.

(c) It is also applicable to tape recorders.

(d) In the embodiment, the drive mechanism 33 is constructed mechanically by a combination of a spring and a lever, but it is constructed electrically by a plunger solenoid or the like, and detects the position of the movable body 27 with a switch to drive the plunger. A solenoid may also be activated.

[Brief explanation of the drawing]

Figure 1 is a front view of a VTR according to an embodiment of the present invention with the lid open, Figure 2 is a front view with the lid closed, and Figure 3 is a partially cutaway view of the VTR with the lid open. 4 is a partially cutaway enlarged side view with the lid closed; FIG. 5 is a partially enlarged side view showing the cassette push-out mechanism and push-down mechanism; FIG.
The figure is a partially cutaway enlarged plan view showing the lock mechanism.
The figure is an enlarged front view showing the lock mechanism. 1...container, 2...lid, 3...cassette, 4...
...opening, 5...eject operation lever, 10...knob, 18...cassette holder.

Claims (1)

[Claims for Utility Model Registration] In a magnetic tape device configured to perform recording or reproduction by inserting a magnetic tape cassette through an opening provided in a container, the container is formed so as to close said opening; an opening/closing lid that is rotatably attached to the opening/closing lid, and the opening/closing lid is interposed between the opening/closing lid and the container so as to close the opening in a water-tight or dust-tight state when the opening/closing lid is closed; an elastic body disposed to surround the opening; a locking means for locking the opening/closing lid so as to keep the opening closed; and a locking means disposed inside the opening/closing lid and responsive to opening of the opening/closing lid. A magnetic tape device comprising: an eject operation lever for ejecting the cassette to a position where it can be taken out.