JPS63148453A - Cassette loading device - Google Patents

Abstract

PURPOSE:To safely and smoothly press a cassette at its loading time by controlling the pressure for the cassette according to the moving position of a cassette holding member. CONSTITUTION:The cassette 1 inserted in the direction of an arrow mark A is not pressed against a cassette holder 2 during up to abutting to a presser 5, but according to the insertion in the arrow mark A direction of the cassette 1 further a presser 5 is pushed up in the reverse direction to the arrow mark B direction by the tapered shape of the cassette 1 and the pressing against the cassette 1 is gradually increased. With further insertion of the cassette 1 a constant pressure fitting is obtd. with the contact D of the presser 5 and a guide roller 6 by separating from a stationary guide 7 thereafter. The cassette 1 is thus pressed safely and smoothly at its loading time with a simple structure.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cassette mounting iai for mounting a cassette containing a recording medium to a loading position.

[Prior Art] For example, in a device such as a VTR that records and plays back signals on a magnetic tape housed in a cassette, it is generally known that It is equipped with a mechanism to move it between the loading completion position and the loading completion position. This movement is performed by moving the cassette holder that holds the cassette, but it is necessary to accurately define the position of the cassette within the cassette holder so that the cassette is correctly guided to a predetermined position in the apparatus. For this reason, a cassette holding mechanism that presses the cassette within the cassette holder has been conventionally used.

FIG. 4 is a diagram for explaining an example of a holding mechanism in a conventional cassette loading device, where l indicates a cassette, and in this figure, the holding mechanism is a holding member using a spring (not shown), etc. Constant pressing forces B and C are working.

[Problems to be Solved by the Invention] As described above, in the conventional cassette loading device, the cassette loaded in the cassette holder is always moved by a constant pressing force at each movement point when moving to the cassette loading completion position. As a result, the optimal cassette pressing force cannot be obtained, and an uneven and unnecessary load is placed on the drive source for moving the cassette holder, which causes problems such as noise and breakdowns.

The present invention has been made to solve such problems, and an object of the present invention is to provide a cassette mounting device that has a simple structure and can safely and smoothly press a cassette during loading.

[Means for Solving the Problems] The cassette loading device of the present invention includes a cassette holding member that is movable together with the cassette, a suppressing member that presses the cassette, and a pressing member that presses the suppressing member, in order to hold and convey the cassette. and a control member that controls the pressure according to the moving position of the cassette holding member.

[Operation] With the above-described configuration, by controlling the pressing force on the cassette according to the moving position of the cassette holding member, the cassette can be smoothly transported without applying a load to the movement drive source of the cassette holding member. can do.

[Example] An embodiment of the present invention will be described below.

FIG. 2 is an explanatory diagram of a cassette holder for holding and transporting a VTR cassette as an embodiment of the present invention, and FIG. 3 is a diagram showing a drive mechanism of the cassette holder shown in FIG. 2.

In FIG. 2, 2 is a cassette holder main body, 11 is a bent portion on the cassette insertion side, 12a and 12b are stoppers for locking the ends of the cassette, 13a and 13b are side walls integrally formed with the holder main body 2, 14a, 14b.

1.5a and 15b are drive shafts driven by respective cassette drive mechanisms.

In FIG. 3, 21 is a drive mechanism main body, 22a.

22b is a guide groove formed in the side plate 23 of the main body 21, into which the aforementioned drive shafts 14a and 15a fit. Note that the side plate 24 opposite to the side plate 23 also has a guide groove 22c,
22d is formed.

25 is a motor, and the rotation of the motor 25 is caused by an idler 26.
．． It is transmitted to the rotary plate 28 via 27.

Reference numeral 29 denotes a connecting lever that connects the outer diameter portion of the rotating plate 28 and the drive shaft 14a. When the rotating plate 28 rotates counterclockwise, the driving shaft 14a moves in the direction of arrow 30 in the figure via the connecting lever 29. . In addition, each shaft 14a,
15a, 14b.

15b are guide grooves 22a, 22b, and 22c, respectively.

22d.

Reference numeral 31 denotes a window for covering the cassette insertion slot 3, and is pivotally supported on both side plates 23 and 24 in the same manner. The cassette is inserted by the user through the window 31 and is brought into contact with the striker 12a of the holder body. Then, when the cassette l~ is further pressed in the insertion direction, a switch (not shown) is turned on, and the motor 25 is driven to drive the drive shaft 1.
By guiding the cassette holder 4a in the direction of the arrow 30 along the guide groove 22a, the cassette holder main body IO moves in the insertion direction and then moves downward to complete loading of the cassette.

FIG. 1 is a side view of essential parts for explaining one embodiment of the cassette loading device of the present invention, in which 3 is a lever, 4 is a spring, and 5 is a cassette l located in the center of the lever 3, which is attached to a cassette holder 2. A presser for pressing, 6 is a guide roller attached to the lever 3, 7 is a fixed guide fixed to the side plate 23 of the drive mechanism main body, 8 is a long hole provided in the lever 3, and 9 is installed in the side wall 13b. It's a bottle. Further, the lever 3 is installed on the side wall 13b by the illustrated fulcrum C, and is urged in the direction of the illustrated arrow B about the fulcrum C by the attractive force of the spring 4 installed on the side wall 13b. Furthermore, Figure 2~
The same reference numerals as in FIG. 4 indicate the same or similar parts.

FIG. 141(a) is a diagram showing a state in which the insertion of the cassette l into the cassette holder 2 is started. At this time, the side wall 13b
The lever 3, which is biased in the direction of arrow B by the attractive force of a spring 4 installed at the lever 3, abuts the guide roller 6 against the fixed guide 7 because the presser 5 is pushed up by the cassette 2. At this time, the lever 3 is prevented from rotating about the fulcrum C in the direction of the arrow B, and the holding member 5 receives the insertion of the cassette I from the direction of the arrow A shown in the figure.

FIG. 1(b) shows a state in which the cassette 1 has been inserted further in the direction of arrow A. At this time, as the cassette I is inserted in the direction of arrow A, the lever 3 is pushed up in the direction opposite to the direction of arrow B, which is biased by the spring 4. Therefore, a gap is created between the guide roller 6 and the fixed guide 7, and the cassette 1 is pressed onto the cassette holder 2 by the illustrated contact portion of the presser 5.

As can be seen from the explanations of FIGS. 1(a) and 1(b),
The cassette 1 inserted in the direction of arrow A is not pressed against the cassette holder 2 until it hits the presser 5, but as the cassette 1 is further inserted in the direction of arrow A, the presser The tool 5 is pushed up in the direction opposite to the direction of arrow B due to the tapered shape of the illustrated cassette l, and the pressing force against the cassette l gradually increases.

As the insertion of the cassette 1 further progresses, the guide roller 6 separates from the fixed guide 7, and a certain degree of pressure is then obtained through contact with the presser tool 5.

Note that the elongated hole 8 provided in the shield 3 and the pin 9 installed in the side plate 23 restrict the lever 3 so that the pressure applied by the spring 4 to the cassette l does not exceed a predetermined level. It is something.

[Effects of the Invention] As explained above, according to the present invention, it is possible to provide a cassette loading device which has a simple structure and can press a cassette safely and smoothly during loading.

[Brief explanation of the drawing]

FIGS. 1(a) and (b) are side views showing the main configuration of an embodiment of the cassette mounting device of the present invention, FIG. 2 is a diagram showing an example of a cassette holder in a conventional cassette mounting device, FIG. 3 is a diagram showing an activation mechanism of the cassette holder shown in FIG. 2, and FIG. 4 is a diagram for explaining an example of a holding mechanism in a conventional cassette mounting device. In the figure, l: cassette 2: cassette holder 3 lever 4: spring 5: presser x 6: guide roller 7: fixed guide 8: long hole 9: bottle 13b = side wall agent patent attorney 1) Haru Kitatake (b) No. Figure 1 Figure 2 Figure 4

Claims (1)

[Claims] In a device that mounts a cassette that stores a recording medium,
A cassette holding member that is movable together with the cassette in order to hold and convey the cassette, a pressing member that presses the cassette, and a control member that controls the pressing force of the pressing member in accordance with the movement position of the cassette holding member. A cassette loading device characterized by comprising: