JPH04114352A - Cassette loading/unloading device - Google Patents

Abstract

PURPOSE:To prevent the damage of a deck mechanism and a cassette by detecting and discriminating the state (turned-over, oblique, sideways, or the like) other than a prescribed state or cassette insertion in the waiting position to move a tray to a cassette set position. CONSTITUTION:It is discriminated whether a regular cassette 4 is normally inserted or not, whether the cassette 4 conforms to standards or not, and whether the insertion direction is correct or not by on/off states of switches SW 7 to 9 of a tray 2. The tray 2 is stopped in the waiting position in the initial state and is transported to an insertion/ejection position by depression of an eject button; and when the normal cassette 4 is set, it is transported to the waiting position. It is detected whether insertion of the cassette 4 is normal or not, and the tray 2 is returned to the insertion/ejection position in the case of abnormal insertion but is transported to the set position to complete insertion in the case of normal insertion. When the eject button is depressed next, the tray 2 is returned to the insertion/ejection position so that the cassette 4 can be taken out, and ejection is completed. Thus, the damage of the deck mechanism and the cassette is prevented.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a cassette loading/unloading device having a tray for loading and transporting a cassette from a cassette loading/unloading position on the front surface of a magnetic recording/reproducing device to a cassette loading position when loading/unloading a cassette. It is related to.

[Conventional technology]

FIGS. 4(a) and 4(b) are perspective conceptual diagrams, viewed from the side, of the movement of a cassette from insertion to mounting in a conventional magnetic recording/reproducing apparatus, with the left side being the front side.

In the figure, 1 is the outer box of the magnetic recording/reproducing device, 2 is the tray on which the cassette is placed and moves between the insertion/extraction position and the mounting position, 3 is the deck base on which the magnetic recording/reproduction mechanism is placed,
4 is a cassette, 5 is a reel stand, and 6 is a positioning pin for the cassette.

Further, FIG. 4(C) shows an example of a conventional tray drive mechanism, in which 11 is a tray guide groove for regulating the moving position of the tray, 12 is an arm for moving the tray, and 13 is an arm for moving the tray. 14 and 15 are both turned ON and OFF by the tray position detection cam I3, and the tray position is detected by the matrix shown in FIG. 4(d). Position detection switch, 16 is the motor for driving the tray
17 is a reduction gear train.

Next, the operation will be explained.

The conventional cassette loading/unloading device is configured as described above. For example, when loading the cassette 4 into a magnetic recording/reproducing device for recording, the tray position shown in FIG. 4(a) (hereinafter referred to as the cassette loading/unloading position) is used. , place cassette 4 on tray 2, and press the eject button or PLA
When the "l" REC button is pressed, the cassette is automatically moved in the direction of the arrow to the tray position (hereinafter referred to as the cassette loading position) shown in FIG.

Also, when not in use, store cassette 4 in tray 2.
If there is no tray 2, the tray 2 remains in the cassette mounting position.

These trays 2 are driven by, for example, a drive mechanism as shown in FIG. 4(C). This is so that the mohm 12 moves the tray 2 along the guide groove 11. This mechanism also has two tray position detection switches 1 and 1.
4.15, the position of the tray droplet is detected based on the matrix shown in FIG. 4(d), and the rotation of the motor is controlled. These switches are connected to the first 5W14. It is expressed in the table shown in FIG. 4(d) as the second 5W15.

[Problem to be solved by the invention]

Conventional cassette loading/unloading devices are configured as described above, so when the cassette is inserted upside down or sideways, or when the cassette is in an irregular condition, or when it is inserted into a non-regular cassette, such as a VHS deck. Even if an 8mm cassette or a completely foreign object is inserted, it will move directly to the cassette mounting position shown in Figure 4(b), and may damage the depth mechanism or cassette by riding on the cassette or reel stand. There was a problem with this. Furthermore, if there is no cassette, the tray is stopped at the mounting position shown in FIG. 4(b), resulting in a problem that the ejection time of the tray becomes long.

This invention was made to solve the above-mentioned problems, and the reel stand etc. To provide a cassette attaching/detaching device capable of protecting a deck mechanism and a cassette from being damaged by running over it.

Furthermore, it is an object of the present invention to provide a cassette attachment/detachment device that can shorten the time required to move a tray housed in a main body to an insertion/extraction position when inserting a cassette.

[Means to solve the problem]

In the cassette attachment/detachment device according to the present invention, a standby position is provided between the cassette insertion/extraction position and the cassette attachment position,
If a cassette in the tray is not properly loaded or if a cassette other than the specified cassette is loaded, a judgment is made at this standby position and the tray is ejected to the insertion/extraction position.

If no cassette is detected in the tray, it remains in the standby position.

[Effect]

In this invention, when a cassette is inserted in an unspecified state (upside down, diagonally, sideways, etc.) in the cassette attachment/detachment device, or when a cassette other than the specified cassette is inserted, a detection 2 is made at the standby position, and the tray Since it is not moved to the cassette mounting position, there is no need to damage the loading mechanism such as the reel stand and the cassette.

Furthermore, when a cassette is not detected in the tray, it remains in the standby position, thereby reducing the time required to move the tray to the next insertion/extraction position.

〔Example〕

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

Figures 1 (a), (b), (C), (d) and 2
Figure (a)l;! 1 shows a cassette attachment/detachment device according to an embodiment of the present invention. Figures 1 (a) and (C) respectively show the cassette insertion/removal position and the cassette mounting position as in the conventional case.
Figure (b) shows a standby position provided in the middle. Moreover, FIG. 1(d) shows the drive mechanism.

In this embodiment, the cam 13 has been modified to be able to detect the standby position, and the matrix shown in FIG. 1(e) has also been slightly modified accordingly. The other component configurations are the same as the conventional one. FIG. 2(a) shows an example of a cassette detection switch provided within the tray 2. 7.8 (as shown in the figure), 7.8 (switch switch provided on the surface where the tray is removed), 9 is the switch provided on the tray bottom plate (=switch), and hereinafter, they are respectively referred to as the first SW 7 and the second SW (7 ) SW8.The third SW9 and r1'ft, Q<ko.
) is a diagram showing the back side of the VHS standard case and throat.
1O represents a guide groove for preventing erroneous insertion of a hook/metal.

Next, the operation will be explained.

Figures 1 (a), (b), and (C) show one embodiment of the present invention (the cassette loading operation). Figure (b
) (indicated as the cassette/soto standby position) will be newly established. After the tray 2 is housed in the main body from the insertion/extraction position, the state of the cassette 4 is detected at this standby position by means of a switch l provided as shown in FIG. 2(a), for example. 1st SW7. The second 5W8i is provided on both sides of the tray 2 so as to be turned on when a regular case/gutter 4 is inserted normally. In addition, the third SW 9 is provided on the bottom plate of the tray 2 to detect the guide groove 10 for preventing incorrect insertion of a cassette as shown in FIG. The state of the building is maintained.

These three SWs are 0N-ON-OFF (first 5W
7-Second 5W8-Third 5W9), it is determined that the regular cassette 4 has been inserted normally (Case 1)
. When the three SWs are 0FF-OFF-OFF, it is determined that the cassette 4 is not inserted, and the device remains at the standby position (case 2).

When taking a SW case or a case other than these two types, it is determined that the cassette 4 is non-standard or the insertion direction is incorrect, and the tray 2 is ejected (case 3).

In addition to explaining the detection state of the switch, the operation of the present invention will be explained using the flowchart shown in FIG. First, in the initial state of the cassette attaching/detaching device, there is no cassette 4, and the tray 2 is stopped at the standby position (S4
). Here, when the eject button is pressed, ejection starts (S7), and the tray 2 that has been in the parked state is transferred to the insertion/extraction position (S8). If a cassette 4 suitable for the above-mentioned apparatus is set in the tray 2 at the insertion/extraction position, the tray 2 enters the insertion start state (Sl), and the tray 2 is transferred to the standby position inside the apparatus.

Next, at the standby position, it is detected whether or not the insertion of the cassette 4 is normal (S,'). If the insertion of the cassette 4 is abnormal, the tray 2 is returned to the insertion/extraction position (S6).

If normal, the tray 2 is transferred to the mounting position, and insertion is completed (S3). To remove tray 2 with cassette 4 set in this insertion completed state, press the eject button to start ejecting (S,) and move tray 2 to the insertion/extraction position (until cassette 4 is removed from tray 2). ), that is, ejection is completed (S, .).

FIG. 1(d) shows an embodiment of the tray driving and tray position detection method, in which the tray position is detected using a matrix such as the table shown in FIG. 1(e) and sent to the mechanical control microcomputer. Motor 1 according to the flow shown in Figure 3.
6 to drive and stop.

〔Effect of the invention〕

As described above, according to the cassette attachment/detachment device of the present invention, the cassette in the tray is not moved to the cassette attachment/detachment position when it is not in a specified state. It has the effect of preventing damage to the

Furthermore, since the tray remains at the standby position when there is nothing in the tray, the time required to move the tray to the insertion/extraction position can be shortened compared to a method in which the tray remains at the mounting position.

[Brief explanation of drawings]

FIGS. 1(a), (b), and (C) are conceptual diagrams showing simple operations according to the embodiment of the present invention, and FIG. 1(a) shows the tray position in the cassette insertion/extraction state according to the embodiment of the present invention. Figure, 1st
FIG. 1(b) is a diagram showing the tray position in the cassette standby state according to the embodiment of the present invention, FIG. 1(C) is a diagram showing the tray position in the cassette mounted state according to the embodiment of the present invention, FIG.
) is a diagram showing a tray drive mechanism according to an embodiment of the present invention,
FIG. 1(e) is a diagram showing a matrix table showing a matrix of tray position detection switches according to an embodiment of the present invention, and FIG. Figure 2 (bl is a back view showing the back side of the VH3 standard cassette according to the embodiment of the present invention, Figure 3 is a flowchart diagram showing the operation procedure according to the embodiment of the present invention, Figure 4 ( a),
(b) is a conceptual diagram showing the operation of a conventional cassette attachment/detachment device;
Fig. 4(a) shows the tray position when the cassette is inserted and removed, Fig. 4(b) shows the tray position when the cassette is attached, and Fig. 4(C) shows a conventional tray drive mechanism. The figure and arrows in the figure indicate the moving path of the tray. FIG. 4 (dl is a diagram showing a matrix table showing the matrix of a conventional tray position detection switch. In the figure, 1 is a VTR outer box, 2 is a tray, 3 is a deck base, 4 is a cassette, and 5 is a reel stand. , 6 is a cassette positioning pin, 7 is a first cassette detection switch, 8 is a second cassette detection switch, 9 is a third cassette detection switch, 1° is a guide groove for preventing incorrect insertion of a cassette, 1
1 is a tray guide groove, 12 is an arm, ] 3 is a tray position detection cam, 14 is a first tray position detection switch,
15 is a second tray position detection switch, 16 is a tray drive motor, and 17 is a reduction gear train. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (2)

[Claims] (1) It has a tray for loading and transporting cassettes,
In a cassette loading/unloading device that uses the tray to insert a cassette from a cassette loading/unloading position on the front of a magnetic recording/reproducing device and transporting the cassette to a cassette loading position, a standby position is provided between the cassette loading/unloading position and the cassette loading position. means for detecting the presence or absence of the cassette provided in the tray, and means for determining the presence or absence of the cassette using the detection means in the standby position, and retains the tray in the standby position when there is no cassette. A cassette attaching/detaching device characterized by: (2) It has a tray for loading and transporting cassettes,
In a cassette loading/unloading device that uses the tray to insert a cassette from a cassette loading/unloading position on the front of a magnetic recording/reproducing device and transporting the cassette to a cassette loading position, a standby position is provided between the cassette loading/unloading position and the cassette loading position. a means for detecting the state of the cassette, and a means for determining whether the state of the cassette is normal or abnormal using the detecting means in the standby position, A cassette attachment/detachment device characterized by returning a tray to a cassette insertion/extraction position when something is loaded.