JPS6353743A - Cassette slider opening/closing mechanism - Google Patents

Abstract

PURPOSE:To contrive to automatize the opening/closing operation of a slider, by moving a cassette holding tray by a sliding lever with a timing delayed a little after the sliding lever starts to move. CONSTITUTION:The quantity of the moving stroke of a sliding lever 1 is controlled by the pattern of a cam groove in a cam gear 6, and it is set so as to exceed the quantity of the moving stroke by the quantity of strokes required for the opening/closing of the slider of a cassette. Therefore, the pressing piece 1a, or 1b of the sliding lever 1 presses the cassette holding tray 3, or the end part of a cassette pack 4, with the timing delayed a little after the movement of the sliding lever 1, and the cassette holding tray 3 is also moved along L- shaped grooves 7a and 7b in a clockwise direction. In this way, since the opening/closing operation of the slider can be performed automatically in the cassette holding tray 3, the malfunction of the opening/closing of the slider due to the mis-operation of a user, etc., can be prevented from occurring.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cassette slider opening/closing mechanism applicable to digital audio tape recorders and the like.

[Summary of the Invention] The present invention provides a slider opening/closing mechanism for a cassette, in which the slider is moved within the cassette holding tray by moving the cassette holding tray with the slide lever at a timing slightly delayed after the slide lever starts moving. The opening and closing operations are automatically performed.

[Prior Art] A slider opening/closing mechanism in a conventional R-DAT (digital audio tape recorder) etc. uses the force of inserting a cassette into a cassette holding tray or the force of pulling it out from the tray to open/close the slider. This is done by removing the slider lock.

[Problems to be Solved by the Invention] However, such a conventional slider opening/closing mechanism requires a detection mechanism to detect whether the slider is locked in the open state when inserting a cassette, and also requires a mechanism to detect whether the slider is locked in the open state when inserting a cassette. Sometimes, the cassette and slider may be pulled out while being held between the hands, and as a result, there is a problem that erroneous operations are likely to occur, such as a high possibility of pulling out the cassette with the slider locked in the open state.

The present invention has been made in response to such problems, and an object of the present invention is to provide a cassette slider mechanism that automatically opens and closes the slider within a cassette holding tray.

[Means for Solving the Problems] To achieve the above object, the present invention includes a loading guide frame having a horizontal guide groove and an L-shaped guide groove on the side plate, and a vertical guide arranged in the loading guide frame. a cassette holding tray having a first guide pin on a side plate that slidably engages with the groove; and a cassette holding tray that is disposed between the loading guide frame and the cassette holding tray and slidably engages with the horizontal guide groove. a slide lever having a second guide pin and a pressing piece for pushing the end of the cassette holding tray or the cassette; and a slide arm that applies a moving force to the slide lever by pressing the second guide pin. It is characterized by having

[Function] The cassette holding tray can be moved by the slide lever at a slightly delayed timing after the slide lever starts moving. Therefore, the slider can be automatically opened and closed within the cassette holding tray.

[Embodiment of the Invention] Figures 1 and 2 are a side view and a front view showing a slider opening/closing mechanism of a cassette according to an embodiment of the present invention. A loading guide frame 7 is provided, and within this loading guide frame 7 is a cassette holding tray 3 having first guide pins 3A, 3B on the side plates that slidably engage with the above-mentioned vertical guide grooves 7a, 7b. is placed. 4 is a cassette pack inserted into the cassette holding tray 3.

Also, loading guide frame 7 and cassette holding tray 3
and has second guide pins 1A and IB slidably engaged with the horizontal guide grooves 7A and 7B, and a pressing piece for pushing the end of the cassette holding tray 3 or the cassette 4. A slide lever 1 having 1a and lb is arranged. 2 is a slide arm, and a third guide pin 2A provided at the end thereof engages with a cam groove 6A of a cam gear 6, and the cam gear 6 meshes with the loading arm gear 5.

When the loading arm gear 5 is driven by this, the cam gear 6 rotates, and the slide arm 2 is rotated clockwise in FIG. 1 with its third guide pin 2A guided by the cam groove 6A and the pin 2B. do. As a result, the recess 2C at the tip of the slide arm 2 engages with the second pin guide IA, so the horizontal guide groove 7A,
It operates to apply a clockwise moving force along line 7B.

At this time, the movement stroke amount of the slide lever 1 is controlled by the pattern of the cam groove 6A of the cam gear 6, and when the cassette holding tray 3 moves horizontally along the L-shaped guide grooves 7a, 7b, the movement stroke amount of the slide lever 1 is controlled by the cassette slider. The stroke amount is set to increase by the amount necessary for opening and closing.

With the above configuration, the pressing piece 1a or 1b of the slide lever 1 is pressed against the cassette holding tray 3 at a timing slightly delayed after the slide lever 1 starts moving.
Alternatively, by pushing the end of the cassette pack 4, the cassette holding tray 3 will also move clockwise along the L-shaped guide grooves 7a, 7b. As a result, the slider opens and closes automatically within the cassette holding tray 3, so that it is possible to prevent the slider from erroneously opening and closing due to user's erroneous operation.

Although the slide lever 1 and the slide arm 2 are provided on both side plates in FIG. 2, they may be provided on at least one side. Also, the timing and stroke amount of the slide arm 2 and the loading arm gear 5 can be controlled. Although an example has been shown in which the cam gear 6 is used, the cam gear 6 may be an incisor gear to synchronize with the loading arm gear 5, and the slide arm 2 and the cam gear 6 may be integrated to drive the slide lever 1. Furthermore, the slide lever 1 can be configured so that the parts that push the cassette pack 4 are not integrated in the front and back, but are divided into two parts on the left and right as shown in FIG. 1 and can be pushed separately.

[Effects of the Invention] As described above, according to the present invention, the cassette holding tray is moved by the slide lever at a timing slightly delayed after the slide lever starts moving, thereby preventing malfunctions in opening and closing the slide. It can be prevented.

[Brief explanation of drawings]

1 and 2 are a side view and a front view showing a slider opening/closing mechanism of a cassette according to an embodiment of the present invention. 1...Slide lever, la, lb...pressing piece, LA, IB, 2A, 3A, 3B...guide pin, 2.
...Slide arm, 2B...pin, 2C...recess. 3... Tray for holding cassettes. 4...Cassette pack. 5... Loading arm gear, 6... Cam gear, 6A... Cam groove, 7... Loading guide frame, 7A, 7B... Horizontal guide groove, 7a, 7b... L-shaped guide groove .

Claims (1)

[Claims] A loading guide frame having a horizontal guide groove and an L-shaped guide groove on a side plate, and a cassette holding tray having a first guide pin on the side plate that is disposed within the loading guide frame and slidably engages with the L-shaped guide groove. and a second guide pin disposed between the loading guide frame and the cassette holding tray and slidably engaging with the horizontal guide groove, and for pushing the cassette holding tray or the end of the cassette. It has a slide lever having a pressing piece, and a slide arm that applies a moving force to the slide lever by pressing the second guide pin, and the slide lever is operated at a timing slightly delayed after the slide lever starts moving. A cassette slide opening/closing mechanism characterized by being configured to move a cassette holding tray.