JPS5945659A - Cassette tape loading device - Google Patents

Abstract

PURPOSE:To prevent the damage of a cassette tape loading device when it is under abnormal operation, by discharging a cassette to the cassette inserting position by giving one turn to the cam of a loading mechanism without actuating a lock if the cassette is adversely loaded. CONSTITUTION:A lock cam part 8c is provided to a loading arm 8 which drives a slide angle 11 serving as a cassette shfting means, a shift arm 10, etc. At the same time, a lock arm 16 which is actuated by a solenoid is set opposite to the cam 8. When a cassette is loaded in a correct way, a switch 2 is turned on to revolve a motor 3. Then the solenoid 15 is energized to release the lock, and the cam 8 turns half to shift the arm 10 and the angle 11 in the direction B. Thus the cassette is loaded, and the cam 8 is locked. If the cassette is adversely loaded, the cassette holder does not drop to a normal position. Thus the 2nd switch is not turned on, and the cam 8 has one turn as it is to discharge the cassette to the inserting position. This prevents the damage of a cassette tape loading device when it is under abnormal operation.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a cassette tape loading device that automatically loads a cassette tape, and in particular, prevents damage to devices such as cassette tape recorders by quickly ejecting the sumo tape in the event of abnormal operation. It is designed to prevent

Conventional FM configuration and its problems Conventionally, when a cassette tape is inserted into the insertion window, the power of the motor automatically moves it to the position where the tape can travel.
A cassette tape loading device is known in which a cassette tape is loaded by moving the cassette tape. In this conventional device, if a moving cassette tape gets caught midway and stops, the load on the loading motor becomes abnormally large, causing a rise in temperature or a breakdown. In addition, there have been cases where the cassette tape mentioned in item 2 gets stuck in the middle and the cassette tape cannot be inserted or removed, and the entire device Pt has to be disassembled. 3. The cassette tape mentioned above gets caught in the middle One of the major causes of this is the operational error of inserting the cassette tape backwards. Reverse insertion and Q': Insertion of a cassette tape in a direction in which the exposed side of the tape does not face the head of the device.To prevent this reverse insertion, many devices use an asymmetrical cross-sectional shape of the cassette tape. Focusing on this, we designed the one-small insertion window to have the same shape as the asymmetrical type described above, so that if the cassette tape was oriented in the opposite direction, it would be impossible to insert it into the insertion window. However, if the size of the insertion window is larger than the cross-sectional size of the cassette tape, the insertion operation becomes difficult, so a certain clearance is required. In other words, the smaller the cassette tape, the more precisely the two clearances must be formed. Even if the cassette tape is successfully inserted, it is very difficult to insert the cassette tape, and scratches often occur due to rubbing on the surface of the cassette tape. was.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned drawbacks of the conventional apparatus, and aims to prevent damage to the apparatus by quickly ejecting the cassette tape in the event of an abnormal operation.

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the cassette tape loading device of the present invention has a cassette tape loading device which has four cassette tapes from a first position of a tape insertion window to a second position where the tape can be run. and a moving means for moving the moving means from the first position to the second position in one rotation.
A cam for moving the cam to the first position again at the position IK<, a locking means for locking the cam at the second position I, and a switch operating at the second position. After inserting the cassette tape, the mJ switch is activated to stop the operation of the rJiJ lock lock 2 means and hold the cassette tape in the second position, but if the cassette tape is inserted backwards or the like, Second
If the cassette tape does not reach the first position, the cam continues to rotate without using the oil rotor locking means, and the cassette tape is moved to the first position by the transfer means. It is designed to return to If.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. ( ) is the cassette tape, and as shown in Figure 1, this cassette tape (1) is the first position 1 ejected from the device.
At this position, the hub hole of the cassette tape (1) and the cassette holding portion 0 are fitted.

(2) is a first switch that operates when the cassette tape (1) is in the first position. (3) is a motor, and this motor (3) is connected to a relay gear (5) by a belt (4).
The gear (5) is connected to t'M so as to transmit the torque to the worm gear IL/(7) via the worm gear (6). The worm wheel (7) is connected to the intermittent gear part (8d) of the cam (8) by this gear part.

The cam (8) is composed of a +J'l rtb intermittent gear part (8d), a lock cam part (8C), a horizontally moving cam part (8b), and a vertically moving cam part (8a). The lock cam portion (8C) is locked by a lock arm (l), and the lock arm θG is coupled to a solenoid OQ.

In addition, the horizontal movement cam part (8b) has a first slide angle (
By contacting the pin (9a) of 0), the first nullide angle) V' (9) is moved down in the direction of arrows A and B in FIG. The first slide angle (9) is connected to the transfer arm 0 (tea).
) is the fulcrum and the transfer L arm θQ rotates around the pin (1
0c) is connected to the second slide angle Q'l),
Furthermore, the cassette holding part θ having the second sliding angle β1 is fixed with a screw (12a,), and the second sliding angle /l/
CI] J is the pin (11a) (11,1) ) to the guide angle /l/ (to i'i+r(19a) of lie)? >It works. The vertically movable cup portion (8a) contacts the pin (tea) of the third slide angle .theta. to control the movement of this angle .theta. x (attached to the 5s slide angle (13 is fixed to the side branch 0, fixed pin (18a) (t8b) Ka to the holder holding plate)) (22a). Holder 1 retainer (h (c) is the shaft (2'2 b
) is used as a fulcrum and is biased in the I direction by a vertical movement spring (A) and engaged with the bent portion (21c) of the cassette holder (B). The pins (2ta) (2tb) attached to the cassette holder υ fit into the kite parts (180) (18d) provided on the side plate O.

Further, the cassette holder al) id is configured to operate the second switch (c) when it hits the second switch (c). The spring 0 biases the transfer art θa in the direction of the arrow in FIG.
It functions to press υ in the direction to turn off the first switch (2).

FIG. 7 shows a block diagram of the control circuit. The first switch (2) and the second switch (c) are input to the control section (c), and the FM is configured such that a control signal is output to the motor (3) and solenoid OQ. 8 and 9 show the relationship between the cassette tape (1) and the reel stand when the cassette tape (1) is inserted normally and when it is inserted backwards.Next, the operation will be explained. First, the case where the cassette tape (1) is inserted in the forward direction will be explained.

1) rG In Figure 1, when the cassette tape (1) is pressed, the second Nuride Ang) VQυ moves in the direction of arrow B, and the first
The switch (2) is turned on, power is supplied to the motor (3), and the motor (3) starts rotating. At the same time, the solenoid θ' is operated, and the lock arm, θ6 ( 8C) When the motor (3) rotates, its rotational torque d, belt (4), relay gear (5), wart gear (0), ') ohmwheel/l' (7) is passed through the cam (8 ) intermittent gear part (8
(+, ) VC transmitted; 'J Mu (8) rotated s, g',. The lock cam part (8c) is rotated by the rotation of the cam (8).
), water "l'i":! = +1rjI cutlet part (8b
)1. The lower moving cam part (8a) starts rotating at the same time.

The horizontal movement cam part (8b) moves the first quay 1-' angle fQ+ in the direction of the arrow 17. through the pin (!c).
At ψ, the transfer arm (Ill) is operated via the pin (10a) by the first Nuride Ang /L/+9), and the second
The nullite (angle 01) is moved in the direction of arrow B via the transfer arm (pin (H)c of 11). Therefore, the sumo wrestler tape (1) is attached to the arrow D by the cassette holding part θ.
Mobile in the direction - being picked up. Also, the vertical movement force l・part (8
Due to the rotation of a), the spring 041 is biased in the direction of arrow B.
The eighth slide angle θ is connected to the pin (18a
, ) in the direction of arrow B. cam(
8) rotates approximately half a turn, the loading mechanism section becomes as shown in FIG. FIG. 3 shows a state in which the sumo wrestler's tape (1) is attached so that the tape can run. In this state, as shown in Fig. 4, the lock cam portion (8c) of the cam (8)
is in a locked state by lock arm aQ, [
When the second switch Q4, which will be described later, turns on, the solenoid θF stops pulling to 1ν], and the intermittent gear part (
8d), the bonding force with the worm wheel (7) +l
'! It has been IFed. Therefore, in this state, the worm wheel (7) is rotating, but the rotation of the cam (8) is stopped. On the other hand, the third slide Ang) v0
Due to the shape of the opening in step 3 and the downward movement spring), the pin (22a) of the holder holding plate (a) is moved in the direction of +111J L, and the cassette tape (1) contained in the cassette holder Qυ is It fits with the reel stand (20a,) (20b) protruding from the mechanical board (e).In this state, d,
The second switch (c) is turned on. When this second switch is turned off, the suction of the solenoid OQ is cut off, and the solenoid for tape navigation (not shown) is suctioned to put the tape in a running state. It is. Next, the operation when the cassette tape (1) is ejected from this cassette tape mounting state will be explained. When ejecting the cassette tape (1), the solenoid 4 is sucked by a control device (not shown in Fig. 7), and the lock cut (8c) and the lock arm (1→) are disengaged.The cam (8) is When the lock is released, the spring that rotates the cam a little moves, and the intermittent gear part (8d) moves, although it is not shown in the figure.
and Umeempoi/I/(71 is combined with [1, vertically moving cam i':lX(8a), horizontally moving cam 11yis
(8b) starts to rotate, and due to the movement of the C cam parts, the third unit (8b) starts rotating as in [)1]v (1
3, move the holder holding Dy (A), raise the cassette holder I20 upwards, and slide the ?
M, second slide ank 71/ (Iυ's Ml!I
As a result of the operation, the cassette tape (1) is moved in the direction of the arrow B/T, and the cassette tape (1) moves in the ejection direction.

The second slide angle/I10υ moves in the direction of the notch JB, and the 4th first switch (2) χ・off switch moves to +ii1.
When the motor (3) stops rotating, the cassette boot tab (
1) Stops at the ejection position as shown in the figure.

h' of the operation of the loading mechanism when the cassette tape (1) is moved in the opposite direction; Add a spell in Figure 9. Figure 8 shows No. 91 during normal insertion. 1 i・J, Reverse [Φ This shows the state of person 1.

In the figure, from (La,) (lb) r is a cellar l-hub hole, and from the exposed side of this hole 1?4''Q, from l111 to β2, ll>ノ. Ori,
Using this difference, reverse insert the sumo wrestler tape (])', c
'+8iJ can be separately discharged. When the cassette tape (1) is loaded] If the cassette tape (1) moves in the direction indicated by the arrow, the cassette tape (1) moves in the direction indicated by the arrow in Figure 8. The hub holes (la) (ib) are connected to the reel stand (20a)
)(20b) VLC(('pnumashi, cassette tape(
The end of 1) presses the acticoator (24a) of the switch Q÷ of 55S2, and the ON 1 symbol is input to the control unit Cil. On the other hand, when the cassette tape f]) is inserted in the opposite direction as shown in FIG. 9 As shown in Figure 1/1, Air Book 4>l
z, the cassette hub hole (tb) Da) is connected to the reel stand (
20a) (20b), and as is clear from FIG.
20a,) (20b)” remains in double digits, and the second
The switch (c) is not turned on. Insert the cassette tape (1) in reverse. U h'fi version I
I (It to cassette hub hole (LA) (LB)
Although the non-eleventh symmetry of the position is used as 411, it is not limited to this method, and other shapes of the shape may also be used. When the cassette tape (1) is inserted backwards as described in ni1, it initially moves in the same way as when it is inserted normally, but the cam (8)
1, when the cassette holder G is connected to the reel stand (20a) (20b), as shown in Fig.
)The second switch is placed above so that it does not fall downward■
does not turn on. And solenoid I' OrQ continues to be sucked. i(' means that the lock arm Q~ is not fitted with the lock cam part (8c) i'L, so the cam (8c)
continues to rotate, and the loading #:l purchase (-) performs the same operation as the cassette tape ejection, and finally the sumo tape (1) stops at the position shown in the Mt diagram.Therefore, the cassette tape (j1γ) In the case of a Φ person, Cam (8) will perform the W11 work for the first time [to take a bath] if he translates once.

Effects of the Invention As described above, according to the present invention, the switch detects only when the cassette tape is inserted normally by 1Φ, and the rotation of the loading I'Q ti'f cam is stopped at the cassette tape loading position. By doing this, it is possible to quickly eject the cassette tape when the cassette tape is inserted backwards. In particular, according to the present invention, when the cassette tape is reversed, the switch does not operate;
The cassette tape can be ejected by detecting this, and the motor that moves during loading and the loading 4-way
It is possible to prevent an abnormal load from being applied to the 7'li, and to prevent a failure of the 4fi2j tree due to this. () In order to prevent reverse insertion of the Sumo wrestler, the Sumo wrestler and Okinawa window should be made 11 degrees in excess. This has the excellent effect of preventing the occurrence of scratches on the tape and improving operability.

[Brief explanation of drawings]

The drawings show an example of the present invention, in which FIG. 1 is a plan view of the loading device when the cassette tape is in the first position, FIG. 2d is the same side view, and FIG. Figure 8 is a plan view of the loading device when the tape is in the second position ifl + ", and the fourth position is the same 111.ll
Figure 1'+'+i and Figure 5 are longitudinal cross-sectional views of the same, and Figure 6 is a longitudinal cross-section showing the reverse A+1i person 1+g(of 1.t;) of Cera 1 tape from 1F. M I=sub control circuit block 1': 4, FIG. 8 and 2rS 91:<l
(t-, i: 7e k, '+F When inserting a cassette tape normally and when inserting it backwards, the relationship between the cassette tape and the reel stand is removed. ii'l: Shikoku. (1) °・° Cassette tape, (1a) (1b) ridge hub hole, +2'l =-1st da) switch, ('')...motor, (8)...f, t, , +(U...th 1 slide angle, θq... child, H, y: arm, (I
ll...Second slide angle, θt...Sumo wrestler holder, Oj・°°Third slide angle, (19・
・・Solenoid, (Ill・・Lock arm, glue・
...Cassette l-holder, α1...second switch. Dai Uiniri 4 Ki Hiroshi Figure 6 Figure 7 Figure β (A) [C] 2θd
2θb

Claims (1)

[Claims] 1. Cassette 1 - Insert the tape into the first slot of the cassette tape insertion window.
a moving means for moving the tape from the second position f11 to the first position, and moving the moving means from the first position to the second position in one rotation; and a cam that moves the cam again to the first position, and a locking means that locks the cam in the second position described in 11.
After inserting the sumo wrestler tape, the locking means stops the operation of the cam by operating the switch (i) and (11) after inserting the cassette tape. is held in the second position, but if the cassette tape does not reach the second position due to reverse insertion, etc., the locking means is not activated and the nIJ cam continues to rotate. and returning the cassette tape to a first position by the moving means.