JPS63285758A - Locking mechanism for cassette holder in tape recorder - Google Patents

Abstract

PURPOSE:To ensure a lock and to eliminate the chattering of a cassette holder by constructing so as to prelock by a 1st locking means at closing time of cassette holder and to fully close by 2nd locking means. CONSTITUTION:When a cassette holder 22 is pushed in manually for full closing, a pin 28A is engaged with a hook 32C after pushing back a lock lever 32 to the right direction and the holder 22 is prelocked. At this time, the holder and a main body 20 keep a gap H. The prelock is detected by detection switches 47, 48 and when a mode changeover rod 46 is moved in arrow mark A direction by a motor, a lock lever 36 is energized counter clockwisely via a spring 49, a slope 36B is engaged with the pin 28B, the holder 22 is moved in full closing direction and a cassette 10 is positioned at the specified position to be recorded and reproduced. The holder is therefore locked surely to eliminate its chattering at the closing time.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a locking mechanism for a cassette holder in a tape recorder, and particularly to a tape recorder in which a cassette holder can be locked so that there is no gap between the cassette holder and the main body of the device. The present invention relates to a locking mechanism for a cassette holder.

[Conventional technology]

FIG. 9 is a sectional view of a conventional camera-integrated VTR. The locking mechanism of the cassette holder 1 in this VTR consists of a bin IA provided on the side of the cassette holder 1 and
The lock lever 2 is rotatably provided around a fulcrum 2B, and is biased counterclockwise in FIG. 8 by a spring 4.

The cassette holder 1 is rotatably provided with respect to the main body 3 of the apparatus around a fulcrum IA, and is always biased by a holder release spring 5 in the direction of opening the holder (counterclockwise in FIG. 9). ing.

Then, when a cassette is inserted into the cassette holder 1 while it is open and the cassette holder 1 is closed against the urging force of the holder release spring 5, the bin IA of the cassette holder 1 moves the lock lever 2 into the holder. 9 in the clockwise direction, and then is engaged and locked by the hook 12C of the lock lever 2.

At this time, the cassette 10 in the cassette holder I is pressed by the pressing spring 7 and positioned at a predetermined position on the main body 3 by the positioning pin 8 and the height determining pin 9.

On the other hand, the locked cassette holder l is unlocked by moving the mode switching rod 11 movably disposed along the mechanical chassis 12 by a predetermined amount in the direction of the arrow by a driving force from a mode motor (not shown). The tip 11A of the lock lever 2 is moved clockwise against the urging force of the spring 4, and the tip 11A of the lock lever 2 is brought into contact with the pin 2A provided on the lock lever 2. to release the lock. Then, the mode switching rod 11 is returned again by a predetermined amount in the direction of arrow B.

[Problem that the invention seeks to solve]

Traditional skein? ) The locking mechanism of the holder is performed by manually pushing the cassette holder 1, but since the cassette holder 1 is relatively large and light in weight, it easily bends due to lack of rigidity, and therefore the cassette holder It is difficult to securely lock the holder l no matter which part of the holder I is pressed, and there is a problem in that it is not easy to use because the places where it can be pressed are limited.

Further, since an overstroke of the cassette holder is required for so-called locking, it is necessary to provide a gap H between the cassette holder 1 and the main body 3 of the apparatus. If the gap H is large, there is a problem that dust may enter the inside of the device, the cassette holder may shake, and the appearance may be impaired. Furthermore, waterproofing measures required special mechanisms.

The present invention has been made in view of the above circumstances, and provides a cassette in a tape recorder that can close and lock the cassette holder so that there is no gap between the cassette holder and the main body of the device. The purpose is to provide a locking mechanism for a holder.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention stores a cassette in a cassette holder disposed in a device main body so as to be openable and closable, locks the cassette holder when the cassette holder is closed, and holds the cassette at a predetermined position in the device main body. In a locking mechanism for a cassette holder in a tape recorder that is positioned in a tape recorder, a first locking member biased by a spring engages with a first engaging member disposed on the cassette holder before the cassette holder is fully closed. a first locking means for pre-locking the cassette holder by the first locking member; and a second engaging member disposed on the cassette holder after the first locking member completes the pre-locking. The cassette holder is characterized in that it has a second locking member that can be locked, and a second locking means that draws in and fully closes the cassette holder by moving the second locking member electrically.

[Effect]

According to the present invention, the first locking means pre-locks the cassette holder when the cassette holder is pushed in by hand, and the second locking means locks the cassette holder by further pulling in and closing the cassette holder so that there is no gap between the cassette holder and the main body of the apparatus. and the second locking means is electrically driven. Therefore, the second locking means can bring the cassette holder into close contact with the main body of the apparatus, and can also take a large overstroke of the cassette holder when the first locking means pre-locks. It can be locked smoothly even if you push it in.

〔Example〕

Preferred embodiments of a locking mechanism for a cassette holder in a tape recorder according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a perspective view of a camera-integrated VTR to which the present invention is applied, showing a state in which the cassette holder 22 is open, and FIGS. It is shown in the closed state.

In these drawings, this camera-integrated VTR has a VTR11RS housed in a main body 20, and a camera lens section 24 as a video camera section and a finder (not shown) are integrally provided.

The cassette holder 22 is rotatably disposed on the main body 20 about a fulcrum 22A, and has a holder release spring 26.
is biased in the opening direction by. Further, the cassette holder 22 has a cassette presser spring 30 disposed on its lower surface, and cassette receiver members 28 and 28 are disposed on both sides of the cassette holder 22, and the cassette receiver member 28 has a first bin 28A and a cassette receiver member 28. A second bin 28B is provided.

On the other hand, the main body 20 includes a tenth lever 32 that is rotatably arranged around a fulcrum 32A, a twentieth lever 36 that is rotatably arranged around a fulcrum 36A,
A mechanical chassis 38 is provided. The tenth book lever 32 is biased counterclockwise in FIG. 2 by a spring 34, and the hook W engages with the first bottle 28A.
632C. Moreover, the 20th lever 32 has a slope 36B for drawing the second bottle 28B downward.

The mechanical chassis 38 includes a rotating head drum 40, a reel stand 42, a positioning pin 43, a height determining pin 44, a loading mechanism (not shown) for winding the video tape around the rotating head drum 42, a mode switching rod 46, etc. is installed.

The mode switching rod 46 has a tip pressing portion 46A that presses a pin 32B formed on the tenth book lever 32 and a long hole 46B that can be engaged with the pin 36A formed on the twentieth book lever 36. 46 and pin 36
A and a spring 49. The mode switching rod 46 is disposed so as to be movable in the left-right direction in FIG. 2 with respect to the mechanical chassis 38, and can be moved by a motor (mode motor) exclusively for mode switching (not shown).

A detection switch 47 for detecting position I of the tenth lever 32 is fixed on the main body 20 side, and a detection switch 48 for detecting whether the cassette holder 22 is in the closed position is fixed on the mechanical chassis 38. .

Next, the operation of the locking mechanism of the cassette holder will be explained.

FIG. 4 shows the tenth position relative to the position of the mode switching rod 46.
FIG. 7 is a diagram showing the functional states of the lock lever 32 and the 20th lock lever 36.

Now, the mode switching rod 46 is at Mm IP.

Let us consider the case where the cassette holder 22 is fully opened (the rod position shown in FIG. 2).

In this case, as shown in FIG.
is in a lockable state, and the 20th lever 36 is in an unlocked state. When closing the cassette holder 22 in this state, first close the cassette holder 22 manually, that is, by hand.
Push it to the position before fully closing (pre-lock position lf). That is, when the cassette holder 22 is pushed in by hand, the first bin 28A of the member 28 is pushed into the holder receiver by the tenth lever 3.
2 in the clockwise direction in FIG. 2, it engages with the hook portion 32C of the tenth lever 32, and
2 is pre-locked. At this time, a gap H is formed between the cassette holder 22 and the main body 20, and the cassette 10 is not completely installed (see FIG. 2).

Next, when the detection switches 47 and 48 detect that the cassette holder 22 is pre-locked, the mode switching rod 46 is moved to the reference position by the mode motor. f P
o to position PL (rod position shown in FIG. 3) in the direction of arrow A. This rod position PL is the fourth
As shown in the figure, this is the locked position by the 20th lock lever 36. That is, by the movement of the mode switching rod 46, the 20th bending lever 36 is biased to rotate counterclockwise by using the spring 49, and the slope 3 of the 20th bending lever 36 is rotated counterclockwise.
The holder receiver 6B engages with the second pin 28B of the member 28,
The cassette holder 22 is moved in the closing direction.

FIG. 3 shows the state in which the cassette holder 22 is fully closed by the 20th lever 36, and the gap H between the main body 20 and the cassette holder 22 is eliminated, and the cassette 1
0 is positioned at a predetermined position on the main body 20 by coming into contact with a positioning pin 43, a height determining pin 44, etc. Then, in this state, tape loading and the like are performed, and magnetic recording and reproduction on the video tape is performed.

Next, a case will be described in which the cassette holder 22 is opened by inputting a switch such as an eject button.

In this case, the mode switching rod 46 is moved from the position PL in the direction of arrow B in FIG. 3 beyond the reference position P0 to the position P1.
move it to. As shown in FIG. 4, this rod position P,
This is the position where both are unlocked. That is, the mode switching rod 46 is at the reference position P. If you move to the 20th
The pin 36A of the lever 36 is the mode switching rod 46
20th lever 3 is pressed by the left end of the long 46B.
6 rotates clockwise, and the lock by the 20th lever 36 is released. As a result, the cassette holder 2
2 is connected to the tenth lever 32 by the holder release spring 26.
(See Figure 2).

Then, when the mode switching rod 46 further moves in the direction of arrow B, the pin 32B of the tenth book lever 32 is pressed by the tip pressing portion 46A of the mode switching rod 46, and the first
The zero lever 32 rotates clockwise, and the hook R32C of the tenth lever 32 comes off the first bin 28A.

As a result, the cassette holder 22 is released by the holder release spring 26.
is opened to the fully open position. Incidentally, after the cassette holder 22 is released, the mode switching rod 46 returns to the reference position Po again to prepare for the next pre-lock. In addition, rod position 1 of the mode switching rod 46 (Pa SP
LSP, etc.) are detected by a suitable position detector.

Next, another embodiment of the locking mechanism of the cassette holder in the tape recorder according to the present invention will be described.

FIG. 5 is a sectional view of the lock mechanism including the left and right lock levers 50, 50, and shows the state in which the cassette holder 22 is pre-locked. 6 and 7 are a cross-sectional view taken along line A-A in FIG. 5, and a cross-sectional view taken along line B in FIG.
- It is a sectional view along the B line.

This locking mechanism uses the opening γ lever 50 to pre-lock the cassette holder 22 and to open the holder after the pre-lock.
Pins 52A, 52Δ, lock levers 50, 5 arranged in
0, an interlocking arm 54, a mode switching loft 56, etc.

The lock levers 50, 50 have fulcrums 5 on both sides of the main body 20.
It is rotatably arranged around 0A and 50A, and the spring 5
1 in the counterclockwise direction in FIG. The interlocking arm 54 is rotatably disposed on the bottom of the main body 20 about a fulcrum 54A, and has lock levers at both ends.
Recessed portion 5 that loosely fits with lower end portions 50B, 50B of 50, 50
It has 4B and 54B. The mode switching rod 56 is moved in the direction of the arrow on the table 6 by the mode motor,
The interlocking arm 54 is rotated around the fulcrum 54A.

Next, the operation of this locking mechanism will be explained with reference to FIG.

When opening the cassette holder 22, the cassette holder 22
When the holder is pushed in by hand, the holder holder first touches the pin 52 of the member 52.
A contacts the first slope 50C of the lock lever 50 (FIG. 8(A)). When the cassette holder 22 is pushed in from this state, the bin 52A comes into sliding contact with the first slope 50C and descends, pushing the Rock Leno 4-50 away in the clockwise direction against the biasing force of the spring 51 (FIG. 8(B)) ).

Thereafter, when the bottle 52A passes the first slope 50C, the lock lever 50 is rotated counterclockwise by the spring 51, and as shown in FIG. The cassette holder 22 is pre-locked by engaging with the leading end of the cassette holder 22. The recess 54 of the interlocking arm 54 does not restrict the rotation of the lock lever 50 during pre-locking, or functions as a stopper for the spring-biased lock lever 50.

When the cassette holder 22 is pre-locked, the interlocking arm 54 is rotated clockwise in FIG. 6 by the mode switching loft 56, so that the recess 54B is
) to move to the right.

This movement of the recess 54B causes the lock lever 50 to move to the eighth position.
The pin 52A (cassette holder 22) is rotated counterclockwise as shown by the two-dot chain line in FIG.

As a result, the cassette holder 22 is completely closed.

On the other hand, the cassette holder 220 can be unlocked easily by rotating the interlocking arm 54 in the opposite direction to the above using the mode switching rod 56 and moving the lobe lever 50 in the opposite direction to the position shown by the two-dot chain line in FIG. 8(A). be exposed.

〔Effect of the invention〕

As explained above, according to the locking mechanism of the cassette holder in the tape recorder according to the present invention, the cassette holder can be closed with respect to the main body of the device without any gap, thereby reducing the wobbling of the cassette holder when the cassette holder is closed. At the same time, the strength of the entire device can be increased. In addition, it is possible to increase the gap (overstroke) between the main body of the device and the cassette holder by adjusting the pre-lock position of the cassette holder. It can be locked stably even if you press the location.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a camera-integrated VTR to which the present invention is applied, and FIGS. 2 and 3 are sectional views of the IT diagram, respectively, showing various operating states of the locking mechanism of the cassette holder in the tape recorder according to the present invention. FIG. 4 is a diagram showing the relationship between the position of the mode switching rod and the operating state of each lobe flavor used to explain the present invention, and FIG. 5 is a diagram showing the locking mechanism of the cassette holder in the tape recorder according to the present invention. FIGS. 6 and 7 are sectional views taken along lines A-All and B-B in FIG. 5, respectively, and FIGS. Figure 9 shows an example of a locking mechanism for a cassette holder in a conventional tape recorder.
It is a sectional view of TR. 10...Cassette, 20...Main body, 22.
...Cassette holder, 26...Holder release spring,
28A...first pin, 28B...second bottle,
32...Second lever, 36...Second lever, 34
．． 49.51...Spring, 46.56...Mode switching rod, 50...Lock lever-152A...
Pin, 54...Interlocking arm.

Claims (1)

[Scope of Claims] A tape recorder in which a cassette is stored in a cassette holder provided in a device main body so as to be openable and closable, and when the cassette holder is closed, the cassette holder is locked to position the cassette at a predetermined position in the device main body. The cassette holder locking mechanism has a spring-biased first locking member that engages with a first engaging member disposed on the cassette holder before the cassette holder is fully closed; 1st
a first locking means that pre-locks the cassette holder with a locking member; and a second lock that becomes engageable with a second engaging member disposed on the cassette holder after the first locking means completes the pre-locking. A locking mechanism for a cassette holder in a tape recorder, comprising: a second locking means having a second locking member, the second locking member being electrically moved to draw in and fully close the cassette holder. (2) Claim (1), wherein the first locking member of the first locking means is unlocked by means for electrically moving the second locking member of the second locking means. A locking mechanism of a cassette holder in the described tape recorder. (3) The first and second engaging members and the first and second locking members in the first locking means and the second locking means are respectively constituted by the same engaging member and locking member. A locking mechanism for a cassette holder in a tape recorder according to claim (1).