JPH0433583Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention is a front-loading type VTR.
cassette loading mechanism.

(b) Conventional technology In a front-loading VTR, the cassette is manually stored in the cassette holder through an opening provided in the front panel, and when the cassette is pushed in further after storage is completed, the switch is activated. is activated to drive the motor, and the cassette holder moves horizontally and vertically to transport the cassette to the complete loading position. In order to prevent the cassette from being misaligned within the cassette holder during horizontal and vertical movement of the cassette holder, and from being incorrectly installed at the complete loading position,
As disclosed in the cassette holder, an elastic member such as a leaf spring for holding the cassette is attached to the cassette holder, and the cassette is held within the cassette holder by this elastic member, thereby ensuring the cassette is held securely.

(c) Problems to be solved by the invention In the prior art as shown in Fig. 5, when a pressing force F is applied at a position at a distance '=X/AF (A is the length of the cassette in the width direction) is applied. On the other hand, a resistance force f acts on the cassette due to the pressing force of the elastic member 100. At this time, if the relationship F'<f is established, the cassette is placed in the cassette holder 1 as shown in FIG.
The cassette will be stored tilted inside the cassette 01, and the cassette will not reach the complete loading position accurately.

(d) Means for Solving the Problems In the present invention, a cassette holding lever is rotatably supported on both sides of a cassette holder, and a pressing part formed at one end of the holding lever is pressed against the top surface of the cassette by a biasing means. The holding lever is rotated against the biasing means by engaging the engaging portion formed at the other end of the holding lever while the cassette holder is moving horizontally, and temporarily pressing the holding lever. A release mechanism for separating the cassette from the cassette to release the holding of the cassette and correcting the lateral inclination of the cassette is disposed on a support plate that rotatably supports the cassette holder. .

(E) Action When a pressing force F is applied to the end of the cassette as shown in Fig. 5, no resistance force F is generated when the holding lever is released, and it is possible to correct the inclination of the cassette in the cassette holder. Become.

(f) Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a perspective view of the entire cassette loading mechanism, and FIG. 1 is an exploded perspective view of the main parts. An opening/closing lid 1 that closes a cassette insertion slot provided on a front panel (not shown) is rotatably supported between left and right support plates (supporting members) 2 and 3. A cassette holder 4 is located there.

Guide pins 5a, 5b are fixed to both sides of the cassette holder 4.
b is an L-shaped groove 6 formed in the left and right support plates 2 and 3;
a, 6b, and the tip end is connected to the guide lever 7,
It is loosely fitted into the long hole of 8. Gear parts 7a and 8a are integrally formed on the guide levers 7 and 8, and these gear parts are threadedly engaged with drive gears 9 and 10. A loading motor (not shown) and a driving force transmitting means (not shown) interlocked with the motor are engaged with the driving gear 10, and the driving gears 9 and 10 are connected by a shaft 11. Therefore, when the loading motor is driven, the driving force is equally transmitted to the guide levers 7, 8 via the driving force transmitting means, the driving gears 9, 10, and the shaft 11, and the cassette holder 4 is moved.

Reference numerals 12 and 13 indicate approximately L-shaped cassette holding levers rotatably supported on both sides of the cassette holder 4 by support shafts 14 and 15, and one end of which is connected to a locking portion 4b formed on the side of the cassette holder 4. , 4b has a cassette holding lever (lever member) 12 at the other end,
The springs (biasing means) 16 and 17 that are locked to the locking portions 12c and 13c formed in the support shaft 1
4 and 15, it is biased to rotate in the direction of arrow A. Cassette holding lever 12,1
At one end of 3, cassette pressing pieces 12a and 13a extending in the directions of support shafts 14 and 15 are bent. Further, at the other end, an engaging portion 12 having a substantially arc-shaped tip is provided.
b, 13b are provided. Left and right support plates 2, 3
Bent pieces 18 and 19 are formed on the upper edge of the holder, and slope parts (release parts) 18a and 18a are provided in series at predetermined positions. The slope portions 18a, 19a are located at a height that allows the cassette holding levers 12, 13 to engage.

Next, the operation of the device of this embodiment will be explained.

When the guide pins 5a, 5b are at the frontmost ends of the L-shaped grooves 6a, 6b, that is, when the cassette holder 4 is located at the cassette insertion (ejection) position, the engaging portions 12b of the cassette holding levers 12, 13, 1
3b is spaced apart from the bent pieces 18 and 19,
The cassette holding levers 12 and 13 are rotated in the A direction by the urging force of the springs 16 and 17, and the pressing portion 1
2a and 13a are regulated in position at a position where they abut against the upper edge of the side surface of the cassette holder 4. From this state, open the opening/closing lid 1, store the cassette 20 into the cassette holder 4 through the cassette insertion opening, and move the cassette holding levers 12 and 13 in the A direction until the cassette is inserted under the pressing pieces 12a and 13a. When the cassette is rotated in the opposite direction to bring the tip of the cassette into contact with the regulating pieces 4a, 4a formed at the rear end of the cassette holder 4, and the cassette is further pressed, the cassette holder 4 remains in the state in which the cassette is stored. Horizontal movement will be performed manually.

During this horizontal movement, the cassette is held within the cassette holder 4 by being held between the pressing portions 12a, 13a and the bottom surface of the cassette holder 4, as shown in FIG. When a predetermined amount of manual horizontal movement is performed, 12b and 13b move to slope portions 18a and 19a.
cassette holding lever 1.
2 and 13 rotate in a direction opposite to the direction A against the bias of springs 16 and 17, and as shown in FIG. 4, the pressing portions 12a and 13a are separated from the cassette 20 and the pressing of the cassette is released. In this released state, the lateral inclination of the cassette is corrected. That is, when the cassette is inserted at an angle with respect to the insertion direction, and the cassette is held at an angle by the pressing portions 12a and 13a, the inclination can be corrected by manual pressure in the insertion direction during this released state. become.

After the cassette is housed in the cassette holder 4 in this way, when the cassette is further manually pressed, the engaging portions 12b, 13b
passes over the terminal ends of the slope parts 18a, 19a, the engagement between them is released, the cassette holding levers 12, 13 rotate in the direction A, and the pressing parts 12a,
The cassette is pressed again by the cassette 13a, and the cassette is held in the cassette holder 4 in the normal position. At the same time, a detection switch (not shown) that detects that the guide levers 7 and 8 have rotated by a predetermined amount is activated, and the loading motor is started.
The driving force is transmitted to the guide levers 7, 8 through the driving force transmitting means, and the cassette holder 4 automatically continues horizontal and vertical movement until it reaches the cassette loading completion position. During this time, the cassette is pressed by the pressing pieces 12a, 1.
3a, the cassette is stably held, and therefore, the cassette is accurately held on the reel stand at the cassette loading completion position. When the cassette is ejected, the same operation as described above is performed.

Note that when inserting the cassette, the cassette is once pressed against the pressing part 1.
The reason why it is pressed and held by 2a and 13a is to prevent manual cassette insertion from being interrupted midway, or to prevent the cassette from falling out of the cassette insertion slot during ejection.

(g) Effects of the invention As described above, according to the invention, the inclination of the cassette relative to the cassette holder, which occurs when the cassette is inserted by pressing the edge of the cassette without pressing the center, is reduced before automatic suction is started by the motor. The misalignment of the cassette has been corrected and is effective.

[Brief explanation of the drawing]

1 to 4 relate to an embodiment of the present invention,
Figure 1 is an overall perspective view, Figure 2 is an exploded perspective view of essential parts, Figure 3 is a front view when pressed, Figure 4 is a front view when released from pressure, Figures 5 and 6 are conventional examples. FIG. 2, 3...Left/right support plate (support member), 4...
Cassette holder, 12, 13...cassette holding lever (lever member), 12a, 13a...pressing piece (pressing part), 12b, 13b...engaging part, 16,
17... Spring (biasing means), 18a, 19
a...Slope part (release part), 20...Cassette.

Claims (1)

[Scope of Claim for Utility Model Registration] A cassette holder in which a cassette is stored, a support member that supports the cassette holder so as to be movable horizontally and vertically, and a support member rotatably supported on both sides of the cassette holder, with one end attached to the cassette holder. a lever member in which an engaging portion has a pressing portion for pressing the cassette at the other end; means for rotationally biasing the lever member in a direction in which the pressing portion presses the top surface of the cassette; The engaging part is disposed on the support member, and engages with the engaging part while the cassette holder is moving, rotates the lever member against the biasing means, and temporarily stops the pressing part from pressing the cassette. A cassette loading mechanism characterized by comprising a release part that releases the cassette and allows correction of the lateral inclination of the cassette.