JPS58164051A - Cassette containing device - Google Patents

Abstract

PURPOSE:To easily take out a cassette when discharging the cassette, by constituting so that electrification is cut off a position which is further moved from a position where a driving motor is electrified when insulating the cassette. CONSTITUTION:When discharging a cassette, a cassette take-out switch SW3 is switched to a contact (a) side by an eject operation of a prescribed time, and to a driving motor 19, a current of the opposite direction flows and the motor is reversed. Immediately after the driving motor 19 is started, the second switch SW2 is switched to the contact (a) side, and after that, even if the eject operation is released, or the cassette take-out switch SW3 is switched to a contact (b) side, the driving motor 19 is reversed continuously. When discharge of the cassette is completed, the first switch SW1 is switched to the contact (a) side, electrification to the driving motor 19 is cut off, and each switch is reset to its initial state.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette storage device for a magnetic recording/reproducing device or the like.

In recent cassette-type VTRs, the cassette is inserted into the cassette holder inside the main body through the cassette insertion slot on the front of the VTR body where various operation switches are located, the cassette is moved together with the cassette holder to the installation position, and the cassette is set in that position, and recording is performed at that position. A so-called front-loading cassette storage device has been proposed, which allows operations such as playback and playback.

In the above-mentioned cassette storage device, the energization of the drive motor is normally controlled by actuating the switch when the cassette holder is moved, but when loading the cassette, the cassette must be pressed until the rear end of the cassette reaches the vicinity of the insertion slot. Since the drive motor is energized at this position, if the energization is cut off at this position during the cassette ejection operation, it will be difficult to remove the cassette.

Therefore, when ejecting the cassette, it is necessary to facilitate ejection of the cassette by cutting off the current at a position further moved from the position where the drive motor is energized when the cassette is attached.

Normally, for this purpose, it is necessary to provide six switches for detecting the insertion, mounting, and ejection of the cassette, and to operate them in conjunction with the movement of the cassette holder to control the drive motor.

The present invention has been made in view of the above points, and provides a cassette storage device that can satisfy the above requirements by combining the operating states of two switches.

An embodiment of the present invention will be described below with reference to the drawings.

Figure 1 is an exploded perspective view of the cassette storage device, Figure 2 is an outer side view of the left side plate, Figure 6 is an inside view of the left side plate (hereinafter referred to as the margin), and Figure 4 is a side view of the drive mechanism. .

(LL) is a pair of left and right side plates, +31+41Tfi respectively.
l is a top plate, a bottom plate, and a back plate that connect these left and right side plates, and these constitute a frame, and this frame
1, which is fixed to the chassis of the TR main body (not shown);
A cassette holder (not shown) is movably supported on this frame, and this cassette holder can hold a cassette (not shown) when it is in a position facing the insertion slot formed on the operation panel (not shown). be.

The cassette holder has bent pieces (6b) (6a) rising from both ends of the bottom (6a) to position the cassette at a predetermined position. Furthermore, a pair of torsion springs (6θ
) (66) is provided with a pair of cassette presser levers (6f) (6f) that are biased downward, and the cassette ho"z'
While moving to+o, hold "" in place 2.
1('L) is a prevention plate that prevents incorrect or double insertion of the cassette, and the left and right side plates + 1)l! It is supported by notches (1a) and (2a) provided on the + side so as to be rotatable by a predetermined angle. This prevention plate (force) has a tongue (7b) that is inclined downward at a predetermined angle with respect to the base (7a), and the tip (7C) of this tongue is curved upward. ) Continuously attach a protruding piece (7 (l×7(L)) to the end of the
is provided, which controls the cassette holding lever (6f) (6f) before and after the start of horizontal movement of the cassette holder (Q).
O (!!l) is a door that prevents the insertion of foreign objects from the cassette insertion slot, and the rotation axis (between the left and right side plates (1) (9) The door is rotatably supported by the door 8a), can be opened and closed inward, and is always biased toward the closed state by a torsion spring 8b. Opening/closing is controlled.

(Ib) (2b) is the left and right side plate ■ (L formed by the force)
The first guide groove is a letter-shaped first guide groove into which the first guide rollers (6g) (6g) provided on the side plates (6(1)) (6(L)) of the cassette holder (6(L)) are loosely fitted, and the cassette holder The guide #I (1bX21) inside the left and right side plates is movable in the horizontal and vertical directions.
), there are two pairs of guide plates (1C) (
1C), (2a) and (2c) are provided to guide the second guide rollers (6h) (6h) of the cassette holder (2). The interval between the guide plates is set to be wider than the width of the first guide groove. (1a) and (2a) are elevating guide plates that continuously guide the second guide rollers (611) (6h) to the guide plate and are movable up and down.

A U-shaped guide portion (1e) (2θ) having a width equal to the distance between the pair of guide plates is formed on each of the elevation guide plates. Moreover, this elevating guide plate has a second guide groove (i) formed to extend vertically in the left and right side plates.
f) They are integrated with the slide plate (1g x 2g) via (2f) to form a lifting mechanism. This elevating mechanism is biased upward by coil springs i91 and +91, respectively, and normally the guide portions (1e) (2 are the guide plates (1a), (1c), (2c), and (20) VC in the opposing position, i.e. in the raised position.

(10) (!) is a main gear pivotally supported by the first support shafts (ih) (2h) protruding inward from the side plates (9), respectively, and is driven by a drive mechanism to be described later. Guide pins (Ioa) (11a) are provided near the outer periphery of the main gear and loosely fit into the arc-shaped sixth guide grooves (11) and (21) provided on the both side plates tllf21, respectively. There is. (
1j
h) It is located at a different position than (2h), that is, at the bottom. The second support shafts (1j) (2j) each have a first
Rotating lever d2i1'! ! and the first rotation lever tea
The state is pivoted.

This first rotation lever is connected to the first guide groove (1b) (2b).
) through jIJ first guide roller (6g) (6g)
U-shaped notches (12a) (12a) into which the front self-guide pins (10a) (11a) are loosely fitted through the sixth guide groove (1iX21)'; Through-holes (12b) (12b) are formed and can rotate in conjunction with the rotation of the main gear (101 (Il)) to move the cassette holder 1.+1411
14) is a coil spring that is stretched between the first and second rotating levers and acts to bias the cassette holder shell downward at the mounting position of the cassette holder shell. Due to the biasing force, the first and second rotating levers are held together and integrated.

The shrine is a drive shaft that communicates with the left and right side plates (between the ribs), and drive gears (15a) (15a) are arranged at both ends, respectively, and these drive gears connect to the main gear (+01 (11
) to drive. Drive gear (15a) at the right end of the drive shaft
Further, a spring holder 〇@ is arranged at the end of the spring holder 〇@, and a torsion spring αη is wound around this.

(181 is a bracket attached to the right side plate (oblique) of 011, and this bracket includes a drive motor Ql, a pulley υ connected to this drive motor by a belt m, and a worm (I) arranged coaxially with this pulley. ),as well as.

A worm wheel is attached that meshes with the worm. The worm wheel includes a second lip (16a) provided on the spring holder 4 that can be engaged with and fitted to the first lip (16a).
A lip (2sa) is provided, which is normally engaged with the torsion spring (l?), i.e., the torsion spring 0'II is connected to the cassette holder (2sa). , Always inserted, biased toward the 1st port side. Then, when the worm wheel (the cape is stopped) and the cassette holder (the cape) is pressed in the mounting direction against the bias of the torsion spring (17+),
The engagement between the first and second ribs (16a) (25a) is released. Also, (f) is a lever that is rotatably supported on the above-mentioned @2 support shaft (2j) of the right side plate, and the through hole (24a) provided in this stopper lever has the above-mentioned The bent piece (120) of the 2-turn lever 4 fits loosely, and the 2 coil springs are stretched between the two levers, so the levers are normally integrated, but when the coil spring It is possible to push and spread both the levers against the bias.And, at the end of this stopper, there is an M21J button (25a) on the worm wheel.
A locking piece (241) that engages with the worm wheel to restrict rotation of the worm wheel is provided.

The left side plate 11) has first and second switches (8W1').
) (SW2) is provided to detect insertion, attachment, and ejection of a cassette. These first and second switches are located on the left side plate (
1) The first and second slide levers supported by support shafts (nc) and (tl) disposed inside are controlled in many ways.

The first slide lever @ has elongated holes (26a) (26b) into which the support shafts (1k) (11) are loosely fitted, so that it can slide only in the horizontal direction, and the first slide lever @
A suppressing piece (26c) for suppressing the switch (8W1)'ii is provided.

Further, the second slide lever (B) is provided with the support shaft (1).
1) is formed with a long hole (27a) into which the support shaft (1k) is loosely fitted, and a substantially rectangular through hole (27b) into which the support shaft (1k) is loosely fitted. It can be rotated by a predetermined angle, and the second switch (
8W2) A suppression piece (270) for suppressing f is provided. Further, (c) is a coil spring that urges the pivoting end of the second slide lever upward.

The slides of the first and first slide levers are connected to the first and second engagement pins (iob) (1oc) provided through the main gear (!!). This is done by engaging the engaging piece (26d) provided on the lever @ and the □ recesses (27d) (27e).Also, the support shafts (11) of the first and second slide levers The part that fits loosely is a flat washer □ which is biased by the seat spring wire. Since it is held by the edge M, both the slide levers are connected to the first and second engaging pins (10b) ( 100), these engagement pins (1ob) (1
oc) is separated, its sliding position is maintained.

Also, the mark) is the door opening/closing lever that opens and closes the door, and the left side plate (which is rotatably supported on the support shaft (1 m) of υ.The tip of the lever) is the door opening/closing lever that opens and closes the door. left end (8C
) is arranged, and when the locking pin (S1a) is rotated counterclockwise in FIG. 2, the door opens. Also,
This lever town) has a cam part (51b) that can be engaged with a protruding pin (12cl) provided on the first co-moving lever part.
is formed, and by rotating the first synchronized lever 〇, the j′i&( is normally closed, and the cassette is
11if8) Rotate so as to open the cap only when passing below.

Next, regarding the operation of the device of this embodiment, see Fig. 5 (a) to ).
Explain according to the following.

First, the cassette mounting operation will be explained. Figure 5 H)
shows the state before the cassette is inserted, and the door (opening) is biased to the closed state, but can be opened by pressure from the outside.

The first and first synchronized levers 40'4 are integrally urged by a coil spring (I), and in this state they are moved to the cassette mounting position. Missing (
12a) First guide roller (6g) guided by VC
is located at the left end of the first guide groove (1b), and the cassette holder (dan) is in a position where it can receive the cassette. At this position of the cassette holder, the protruding piece (7d) of the prevention plate (L) is engaged with the cassette holding lever (6f), so the angle of inclination is small, and the tongue piece (7b) is located above the cassette insertion path. It is located in

In addition, the first and second slide levers @O are the main gear 1 (1
The first and jig2 switches (sWI) (
BN2) are respectively closed.

Next, when the cassette C42 is inserted from the insertion slot as shown in the M5 diagram, the door is opened and the sloping part (32a) at the front end of the cassette is inserted into the cassette prevention plate ('!j). Push up the cassette holder (!!l) and attach it to the specified position.

When the cassette is pressed down, the cassette holder +61 moves slightly to the right. In conjunction with this, the first synchronized lever and the main tooth are simultaneously moved clockwise. Then, the rotation of the main gear gin causes the first locking bin (i ob) to slide the second slide lever □□□ to the left, opening the second slide (BN2). At this time, the first slide lever foot is held in its original position by the aforementioned seat spring and flat washer, and the first switch (8W1) remains in the closed state.

Here, the first and second switches (swl) (sw2)
The structure is such that the coupling is broken when

Therefore, as described above, by opening only the second switch (812), the drive gear (15a) rotates counterclockwise, the main gear 4 begins to rotate clockwise, and the cassette holder storage) is guided by the first synchronized lever and moves to the right with the cassette placed thereon.

When inserting the aforementioned cassette, the prevention plate +71 is at the tip (7C)
comes into contact with the slope (32a) of the cassette taa and the slope part (5
2a) It slides on the upper surface of the cassette and allows insertion of the cassette, but if the cassette H2 is inserted face down or sideways, the side wall of the cassette Prevention plate +71 to contact the tip (7C)
cannot be pushed up, and insertion is prohibited.

When the cassette holder (100 million) moves further to the right, the image shown in Fig. 5 (
As shown in ll), the second guide roller (6h) is guided by the guide plates (1C) (IQ) and the lifting guide plate (1d), reaches the end of the guide part (1e), and then the first guide roller (6g) reaches the bent portion of the first guide groove (1b) and is located within the guide portion (1θ) of the elevation guide plate.

In this state, the cam part (31m) of the door opening/closing lever is
)K The protruding pin (12
It is in the position rotated clockwise by the rotation of (1), and the door (both sides) is kept in the open state.

On the other hand, after the prevention plate (the force is cassette) is separated from the upper surface of K2, it is rotated slightly counterclockwise and stopped at the opposite position, and the tip (3
C) is located approximately at the center of the cassette insertion path. Therefore, even if an attempt is made to insert another cassette in this state, the tip (7C) will not come into contact with the sloped part (55a) of the cassette cape, but will come into contact with the front wall (33b), so insertion will be prohibited. Ru.

Furthermore, by rotating the main vehicle 4) from this state,
The first and second guide rollers (6g x 6h) descend while riding on the Idori guide plate (1d). And in Figure 5)
As shown in , the cassette holder ring is guided in the above-described state to the mounting position where the first guide roller (6g) reaches the end of the first guide groove (1b).

During the above-mentioned vertical movement, the protruding pin (
12d) is separated from the cam part (311)) of the door opening/closing lever, so the door opening/closing lever (311) rotates counterclockwise.
J# (Let υ be in the closed state.

On the other hand, when the cassette holder tel reaches the mounting position, the second engagement pin (1oc) of the main gear (!!) engages with the engagement piece (26d) of the first slide lever @, and the lever Then, the first switch (8W1) is opened.Therefore, the power to the drive motor is cut off and the main gear stops rotating.
) is fitted into the recess (27e) of the second slide lever O.

Further, just before the cassette holder (piece) reaches the mounting position, the guide pin (ioa) that is engaged with the through hole (12b) of the first rotating lever foot is separated from the side wall of the through hole (12b) and A second rotating lever (11
, and the first rotating lever 2 guides the first guide roller (6g) to the end of the first guide groove (1b) while being pulled by the first rotating lever U field.

] Therefore, the first rotating lever stops at this point, but the first rotating lever tI field rotates for a short period of time until the main gear (intermediate) stops, and then stops. Both rotary levers, which were integrated, stop with a slight distance apart.

Therefore, in the installed state, the first rotary lever foot is biased toward the second rotary lever foot by the coil spring H, and the cassette holder decoy is biased downward, so the cassette cries. is the cassette presser lever (6f)
is biased downward through the

Next, the cassette ejection operation will be described. First, when the eject operation is performed from the state shown in FIG.
) are open, the drive motor is energized and begins to rotate in the opposite direction from when it was installed. Therefore, the main gear 4) rotates counterclockwise, and the second locking pin (1oc) rotates counterclockwise.
slides the second slide lever O to the right to close only the second switch (8W2).

The explanation will be omitted since it is simply the opposite.

Then, the main gear 1101 rotates and the first holding bin (10
1)) Just before reaching the position shown in Fig. 5 P), the first slide lever engages with the retaining piece (2AcL) and the first slide lever
Slide slide lever 1 Slide to the right and switch 1 (8
W1) i Closed state and cut off power to the drive motor.

In this state, the first guide roller (6g) is guided to the starting end of the first guide groove (1b), and when the drive motor is energized when the cassette is installed, the cassette holder (a)
are in different positions. This is because when the cassette is inserted, it is necessary to push the cassette to the position where the drive motor is energized, and in the energized position, the rear end of the cassette reaches near the insertion slot, so when the cassette is ejected, This is because if the power is cut off, it will be difficult to remove the cassette.

Next, the operation of the stopper lever in the device of this embodiment will be explained with reference to FIG.

The stopper lever (c) is biased counterclockwise with respect to the first rotating lever (1!!) by a coil spring (to), and normally rotates together with the M1 rotating lever (2).

Then, when ejecting a cassette in which the drive shaft weight rotates clockwise, the locking piece (24b) of the stopper lever @ rotates counterclockwise to rotate the first rotating lever foot.
engages with spring holder 4, and the stopper lever (c)
stops rotating, but the I@1 rotating lever l rotates a little further and the first guide roller (6g) moves into the first guide groove (1
When reaching the starting end of b), the rotation is stopped. In this state, the second lip (23&) provided on the worm wheel (241) is stopped at a position where it comes into contact with the locking piece (241).

During normal operation, as mentioned above, especially the stopper lever U41
Even if the first guide roller (6g) reaches the starting end of the first guide groove (1b), the drive motor is de-energized, so there is no particular problem. However, for example, if ejection of the cassette is prevented for some reason just before ejecting the sumo wrestler's kit, the counterclockwise rotation of the first rotation lever 112) will stop, and the rotation of the cassette drive shaft load will also stop. Stop.

However, the first lip (1) of the spring holder 4 resists the bias of the torsion spring η.
6a) and the second lip (25a) of the worm wheel @ are separated and can rotate, so if there was no stopper lever (25a), the worm wheel would rotate beyond the predetermined stopping position, causing the torsion. If an unreasonable force is applied to the spring Uη, it may become deformed.Even if the worm wheel rotates just now, the worm wheel will stop at a predetermined position.

Next, the switch circuit in the device of this embodiment will be explained with reference to FIG.

First, before the cassette is inserted, both the first and second switches (EIWI) (BH2) are in the closed state, that is, the movable pieces are in a state where they are each tilted toward the contact point (a), as described above. In addition, the cassette eject switch (swg), which is in the closed state in conjunction with the eject operation, is in the open state and has fallen to the contact (b) side. When the cassette is inserted from this state, the second switch (8W2) is moved to the contact (1). ) Htll
Switch to l. Therefore, a current in the positive direction flows through the drive motor blade, causing the motor to rotate in the normal direction.

When the cassette installation is completed, the first switch (SW
l) is switched to the contact ('b) side, and the power to the drive motor is cut off.

Furthermore, when the cassette is ejected, the cassette eject switch (BH5) is connected after a predetermined period of eject operation.
1 point (a), a current flows in the opposite direction to the drive motor blade, and the motor rotates in reverse. Immediately after the drive motor starts, the second switch (BH3) switches to the contact (a) side, so
Even if the eject operation is subsequently released and the cassette eject switch (sw5) is switched to the contact (1) side, the drive motor continues to rotate in reverse.

Then, when the cassette ejection is completed, the first switch (8W1
) Contact (a) is switched to 111II, power to the drive motor is cut off, and each switch returns to its initial state.

Next, the operation of the switch circuit in the device of this embodiment when detecting dew condensation will be described. A relay switch (RI-) is inserted between the first switch (8W1) and the DC power supply, and this relay switch is normally closed and satisfies the operation of the switch circuit described above. But, VT
If dew condensation occurs in the R body, for example on the guide cylinder surface, the dew condensation sensor (usually installed on the guide cylinder surface)
The detection output is input to the system control circuit, and a cassette installation prohibition command is supplied to the relay switch (RL) to open the relay switch.

Therefore, when condensation occurs, the relay switch (RI) is always open, so even if an attempt is made to insert a cassette, the drive motor is not energized.

As described above, according to the present invention, only two switches are required to operate in conjunction with the movement of the cassette holder, thereby reducing the number of parts and simplifying the switch circuit.
That effect is a dog.

[Brief explanation of drawings]

The drawings all relate to a cassette storage device according to an embodiment of the present invention, Fig. 1 is an exploded perspective view of the device of this embodiment, Fig. 2 is an external view of the left side plate, and Fig. 6 is an illustration of the left side plate. The inside view, Figure 4 is a side view of the drive mechanism, Figure 15 (a) ←) (
c) and d) are explanatory diagrams of the operation of the apparatus of this embodiment, FIG. 6 is an explanatory diagram of a stopper lever, and FIG. 7 is a diagram showing an embodiment of a switch circuit. Explanation of main drawing numbersfl)...Left side plate, 4)...Main gear, (1ob)(
1oc)...first and second engagement pins, shout...first
and second slide lever, cutting 9)...seat spring, (30)■(301-...flat washers, (SWl)
) (BH2)...Iso 1 and 2nd switch procedure
Amendment (Method) Mr. Commissioner of the Japan Patent Office1, Indication of the case Patent Application No. 45435 of 19822, Name of the invention Cassette storage device6, Person making the amendment Patent applicant Address 2-18 Keihan Hondori, Moriguchi City Name (188) Sanyo Electric Co., Ltd. Representative Kaoru Iue 4, Agent address 2-18 Keihan Hondori, Moriguchi City) 5. Date of amendment order (shipment date) September 28, 1980 6. Subject of amendment "Figure 1", "Figure 2", "Figure 3", "Figure 4", "Figure 5 (A)", "Figure 5 (B)", "Figure 5 (Figure 5)" of the drawings
c)", "In Figure 5)", "@Figure 6", and "Figure 7". 7. Contents of amendment: Engraving of drawings (no change in content). that's all

Claims (1)

[Claims] Il) Insert the cassette from the cassette insertion slot into the cassette holder in the main body at the first position, move the cassette to the second position while holding it with the cassette holder, and perform operations such as recording and playback at the second position. In the cassette storage device, a rotating plate that rotates in conjunction with the movement of the cassette holder, and first and second displacement members that are independently displaced by the rotation of the rotating plate, a holding member that holds the displacements of the first and second displacement members; first and second switches that operate according to the displacements of the first and second displacement members; 1. A cassette storage device comprising: a drive motor whose energization is controlled according to operating conditions; and the cassette holder is moved by the driving force of the drive motor.