JPH041969A - Cassette ejector mechanism - Google Patents

Abstract

PURPOSE:To reduce the depth and the thickness of a device by applying the 1st D-cut to the entire part of a round rod and the 2nd D-cut to a part of the rod respectively. CONSTITUTION:A 1st D-cut 32A is applied to the entire part of a round rod 32 so as not cause the interference between the rod 32 and a front cover 17A which is opened in response to falling action of a cassette holder 16. At the same time, a 2nd D-cut 32B is applied to a part of the rod 32 so as not to cause the interference between the rod 32 and a parts of a large height provided to a fixed chassis 10 at a position where a movable chassis can be recorded and reproduced. As a result, the rod 32 is moved close to a cassette and the height of the rod 32 is reduced. thus the structure of a device is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette ejector mechanism provided in a magnetic recording/reproducing device in the field of industrial application.

[Conventional technology]

A movable chassis is provided on the fixed chassis of the magnetic recording/reproducing device, and a cassette holder is supported on the movable chassis via a connecting means so as to be able to be hopped up. This connecting means is provided on the left and right sides of the cassette holder in order to synchronize the left and right sides of the cassette holder, and these are synchronization shafts (round bars) installed near the front cover of the cassette body for protecting the tape. connected.

On the other hand, in recent years, magnetic recording and reproducing devices are desired to be smaller and lighter, and one way to achieve miniaturization is to lower the height and length of the connecting means, and to reduce the weight. One possible way to achieve this is to use a lightweight member for the synchronization shaft.

[Problem to be solved by the invention]

However, if the height or length of the connecting means is lowered, the synchronization shaft will move closer to the tall part of the fixed chassis or the cassette body, and if a lightweight member is used for the shaft, the shaft diameter will need to be adjusted to ensure strength. becomes thicker.

Therefore, when the front cover of the cassette body rotates when storing the cassette, there is a problem that the synchronization shaft interferes with the front cover, and when the moving chassis moves to the cassette recording/playback position, the synchronization shaft will interfere with the front cover of the fixed chassis. There is a problem of interference with parts.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a cassette ejector mechanism that can reduce the size and weight of a magnetic recording/reproducing device.

[Means to solve problems]

In order to achieve the above object, the present invention provides a cassette holder so that it can rise and fall on a moving chassis via hop-up links provided on the left and right sides of the cassette holder, and synchronizes the left and right sides when the cassette holder rises and falls. In order to remove the tape, a cassette ejector mechanism in which left and right rings are connected to each other by a round bar provided near the front cover of the cassette for protecting the tape is used. A first D cut is made in the entire area of the round bar so that it does not interfere with the round bar, and when the movable chassis is moved to a position where recording and playback is possible, the tall parts provided on the fixed chassis and the round bar are connected to each other. The feature is that a second D cut is made in a part of the round bar to prevent interference.

[Effect]

According to the present invention, a D cut is made in the round bar connecting the hop-up links provided on the left and right sides of the cassette holder, and the cut portion is used to connect the tall parts provided on the front cover of the cassette or the fixed chassis. In order to prevent interference,
It is possible to move the round bar closer to the cassette side or to lower the height of the round bar. Furthermore, since the diameter of the shaft can be increased while reducing the size of the device, a lightweight material can be used for the round bar.

〔Example〕

Preferred embodiments of the cassette ejector mechanism according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a side view of a cassette ejector mechanism according to the present invention. In the figure, the fixed chassis 10 is replaced by the movable chassis 1.
2 is provided slidably in the left and right direction, and a movable chassis 12
A cassette holder 16 is provided so as to be movable in the vertical direction via a cassette ejector mechanism 14 according to the present invention.

The lever 18 of the cassette ejector 14 has a lower end rotatably attached to the movable chassis 12 via the bin 20.
The upper end is connected to the elongated hole 24 of the cassette holder 16 through the bin 22.
It is supported so that it can move freely. A lever 26 is rotatably connected to approximately the center of the lever 18 via a pin 34.

This bin 34 is movably supported in the long hole 36 of the movable chassis 12, the lower end of the lever 26 is movably supported in the long hole 30 of the movable chassis 12 via the bin 28, and the upper end is supported by the synchronization shaft 32. It is rotatably provided in the cassette holder 16 via the cassette holder 16. This synchronization shaft 32 is formed into a round bar.

The levers 18, 26, etc. are provided on both sides of the cassette holder 16 in order to synchronize the left and right sides of the cassette holder 16.
The side levers 26 are connected by a synchronizing shaft 32. Therefore, the left and right sides of the cassette holder 16 are synchronously moved up and down. As shown in FIGS. 2 and 13, the synchronization shaft 32 has a D-cut surface 3 in the entire length direction of the synchronization shaft 32.
2A is formed, and a D-cut surface 32B is formed in a part.

The D-cut surface 32A is formed to face the cassette body, and the D-cut surface 32B is formed to face the capstan motor 50 of the fixed chassis 10 (i.e., a tall component provided on the fixed chassis 10). ing. Furthermore, the synchronizing shaft 32 is fixedly mounted on the lever 26.26. Therefore, the D cut surface 32
A and 32B can be fixed so as to face the cassette body or the capstan motor.

In addition, in FIG. 1, 38 is a locking member, and 40 is a spring.

The operation of the cassette ejector mechanism according to the present invention configured as described above will be explained.

First, when the cassette body 17 is stored in the cassette holder 16 and the cassette holder 16 is pushed down, the spring 40
The upper end of the lever 18 moves to the right in FIG. 1 along the elongated hole 24 against the biasing force, and the lower end of the lever 26 moves to the right along the elongated hole 30. At the same time, lever 18 rotates clockwise about pin 20, and lever 2
6 rotates counterclockwise about the pin 28 as a fulcrum.

Therefore, the cassette holder 16 moves downward.

At this time, the pin 34 also moves downward along the long hole 36.

Further, as the cassette holder 16 descends, the tape protection front cover 17A rotates in the direction of the arrow as shown in FIG. 4, and its corner 17B approaches the synchronization shaft. The synchronizing shaft 32 moves downward in an arc with the pin 28 as the center. At this time, the D-cut surface 3 of the synchronization shaft 32
2A always moves opposite to the front lid 17A of the cassette body 17, so that interference between the synchronization shaft 32 and the front lid 17A can be prevented.

When the cassette holder 16 is lowered to a predetermined position, the locking member 38 engages the pin 34 and the cassette holder 16 is locked.

When the cassette holder 16 is locked by the locking member 38, the movable chassis 12 moves to the left in FIG. 1, and when it reaches the recording/reproducing position, the storage of the cassette body is completed and recording/reproduction becomes possible. At this time, D of the synchronization shaft 32
Since the cut surface 32B is located opposite to the upper surface of the capstan motor 50, the synchronization shaft 32 does not interfere with the capstan motor 50.

As described above, according to the present invention, the synchronization shaft 32 has a D
Since the cut surfaces 32A and 32B are provided, the shaft diameter is increased by using lightweight aluminum material for the synchronization shaft 32 to ensure strength, and the height of the synchronization shaft 32 is lowered. Interference with the cassette body and the capstan motor 50 can be prevented even if the capstan motor 50 is brought close to the cassette body.

〔Effect of the invention〕

As described above, according to the cassette ejector mechanism according to the present invention, the weight of the device can be reduced by using a lightweight material for the round rod that synchronizes the left and right links for hop-up. In addition, the round bar has a D cut so as not to interfere with tall parts such as the front lid of the cassette and the capstan motor, so the mounting position of the round bar can be lowered and brought closer to the front lid of the cassette.

Therefore, the depth dimension of the device can be reduced, and the device can also be made thinner.

[Brief explanation of drawings]

FIG. 1 is a side view showing the cassette ejector mechanism according to the present invention when the cassette holder is hopped up, FIG. 2 is a sectional view taken along the line ■-■ of FIG. 1 is a cross-sectional view taken along the line 2, FIG. 4 is a side view showing the cassette ejector mechanism according to the present invention between the hop-up position and the locked position, and FIG. 5 shows the cassette holder being locked. FIG. 3 is a side view showing the cassette ejector mechanism according to the present invention when the cassette ejector mechanism is opened. 14...Cassette ejector mechanism, 16...Cassette holder, 17...Cassette body, 17A...Front cover, 18.26...Lever 20.22.28.34...Pin, 32. ...Shaft, 32A, 32B...D-cut surface, 40...Spring, 50...Capstan motor.

Claims (1)

[Claims] The cassette holder is provided so as to be able to rise and fall on the moving chassis via hop-up links provided on the left and right sides of the cassette holder, and in order to synchronize the left and right sides when the cassette holder rises and falls, tape protection is provided. In a cassette ejector mechanism in which the left and right rings are connected by a round bar provided near the front cover of a cassette for use in a cassette, the front cover, which is opened in conjunction with the downward movement of the cassette holder, and the round bar do not interfere with each other. A first D cut is made in the entire area of the round bar so that when the movable chassis is moved to a position where recording and playback is possible, the round bar will not interfere with the tall parts installed on the fixed chassis. A cassette ejector mechanism characterized by having a second D cut in a part of the cassette ejector mechanism.