JPH08235700A - Tape cassette loading device of videocassette recorder of front loading system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the numbers of required parts and assembling processes and, at the same time, to prevent the malfunction of equipment by forming an upward slope at one front end of the bottom section of a cassette holder so that the lead of a tape cassette can be opened. SOLUTION: When the lead opening button 43 of a tape cassette 40 is pressed, the lead 42 of the cassette 40 is released from a locked state and kept in a completely opened state. When the horizontal movement of the cassette 40 ends, a cassette holder 300 moves downward in the vertical direction and the bottom plate 42b of the partially opened lead 42 of the cassette 40 comes into contact with the slope section 51 of a lead opening cam 50 provided in a deck. As a result, the cassette 40 moves downward and the lead 42 is loaded into the deck in a completely opening state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape cassette loading device for a front loading type video cassette recorder, and more particularly to a tape cassette loading device for a front loading type video cassette recorder using a VHS type video tape.

[0002]

2. Description of the Related Art A VHS type tape cassette has a releasable lead on its front surface for exposing the tape, and the releasable lead can be opened when a lead release button provided on the side surface of the cassette is pressed. is there. In general, a front loading type tape cassette loading device includes a cassette holder for housing a tape cassette, a cassette holder housing for housing and guiding the cassette holder, and a driving means for moving the cassette holder into the cassette holder housing.

FIG. 1 shows a part of a schematic structure of a conventional front loading type tape cassette loading device (only one side is shown). In FIG. 1, the cassette loading device includes an upper plate 10 having an upwardly protruding groove 11, a side bracket 20 fixedly installed below the upper plate 10 and having right-angled guide slots 21 and 22, guide slots 21 and 22. Cassette holder 300 having bosses 312, 313 that slidably engage
It is equipped with. After accommodating the tape cassette 40, the cassette holder 300 is moved horizontally and vertically according to the guide slots 21 and 22 at right angles by a driving device (not shown).

The VHS type tape cassette 40 has a main body 4
1. A lead 42 rotatably attached to the front of the main body 41 and a lead release button 43 provided at a predetermined position on one side of the main body 41. The lead 42 is a lead release button 43
When is pressed, it becomes rotatable. When the lead 42 rotates about the central axis of the hinge pin (not shown), the cassette tape housed in the main body 41 is exposed. Lead 4
A cutout portion 42a is formed in the lower front portion of 2.

The cassette holder 300 includes a pair of side plates 31.
0 (only one is shown) has a lower plate 320 connected to the bottom end between the side plates 310. A stopper 321 is formed on one side of the lower plate 320 so as to vertically project. Side plate 3
10 is provided with a lead opening lever 330 and a button release lever 340, respectively. Button release lever 340
In order to withstand the inward force of the side plate 310, the side plate 31
It is formed on the outer surface of 0. The protruding pressing portion 341 of the button release lever 340 has a hole 311 formed at a predetermined position of the side plate 310.
It is formed so as to protrude through the side plate 310 into the inside thereof.
The lead opening lever 330 includes a sliding portion 331 slidably engaged with the groove 11 of the upper plate 10 and a lead opening portion 334 protruding inward from an end portion of the lead opening lever 340 facing the sliding portion 331.
With the sliding portion 331 of the lead release lever 330 engaged with the groove 11 of the upper plate 10, the tape cassette 40 is inserted into the cassette holder 300 and the stopper 3
When reaching 21, the lead release section 334 is arranged so that the bottom plate 42b of the lead 42 is positioned in the lead open section 334. The side plate 31 is provided so that the lead opening lever 330 can be rotated by the hinge pin 332 and the locking piece 333.
0, the lever 330 is connected to the inner lower surface of the side plate 310 by a spring 350 to receive an oblique force.

With reference to FIG. 1, the operation of the tape cassette loading device having the above construction will be described below.
The user holds the tape cassette 40 in the cassette holder 300.
, The front end portion 41a of the main body 41 of the cassette comes into contact with the stopper 321 of the lower plate 300 and then stops. At that time, the pressing portion 3 of the button release lever 340
As a result of 41 pressing the lead release button 43 of the tape cassette 40, the lead 42 is released from the locked state, and the lead release portion 334 of the lead release lever 330 causes the lead 42 to move.
It contacts the bottom 42b of the one side portion. When the user increases the pushing force of the side plate of the tape cassette 40, the bosses 312, 31 of the tape cassette housed in the cassette holder 300
3 by a driving means (not shown) side bracket 20
The guide slots 21 and 22 are moved horizontally and vertically.

At the beginning of this moving process, first, the sliding portion 331 of the lead opening lever 330 is released from the groove 11 of the upper plate 10 by the pushing force of the user,
It moves to the left side of FIG. Therefore, since the sliding portion 331 rotates clockwise, the bottom 4 of the lead 42 is
The lead opening portion 334 supporting 2b is also rotated clockwise, so that the lead is partially opened. After that, the cassette holder 330 accommodating the tape cassette 40 is automatically moved in the horizontal and vertical directions along the guide slots 21 and 22 by the driving device. When the cassette holder 300 moves vertically downward, the bottom 42b of the lead 42, which is partially opened, of the tape cassette 40 comes into contact with the inclined portion 51 of the auxiliary cam 50 attached to the deck (not shown). 40 is loaded onto the deck with its leads 42 completely open.

However, in the conventional cassette loading device having such a structure, when the protruding pressing portion of the button release lever does not press the lead release button due to the assembly tolerance of the button release lever or other reasons, the lead is locked. It cannot be released, and as a result, the lead opening portion that supports the bottom of the lead cannot rotate clockwise. If the user continues to apply an unreasonable pushing force to the tape cassette in such a state, the leads and lead release lever of the tape cassette may be damaged, or the device may malfunction. Not only that, but it also complicates the structure of the lead release lever on the side plate of the cassette holder for opening the tape cassette partly in the early stage, which requires additional components and consequently a larger internal space. In addition, there is a problem that assembly time and manufacturing cost increase.

[0009]

SUMMARY OF THE INVENTION The present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to eliminate the malfunction of the button release lever due to the assembly tolerance. An object of the present invention is to provide a tape cassette loading device of a video cassette recorder having a simplified structure for partially opening the cassette lead in the initial stage.

[0010]

In order to achieve the above object, a tape cassette loading device for a front loading type video cassette recorder according to the present invention comprises a lead which can be opened by pressing a lead release button and a driving means. In a tape cassette loading device of a front loading type video cassette recorder for loading and unloading a tape cassette in a video tape cassette recorder, the device accommodates the tape cassette and is horizontally and vertically driven by the driving means. Equipped with a cassette holder to move,
The cassette holder has first and second side plates, each of the first and second side plates has a coupling means projecting outwardly, and the cassette holder is provided between the first and second side plates. With a bottom plate connected to the bottom end of these side plates,
The bottom plate has a lead opening means for partially releasing the leads of the tape cassette, the first side plate has a hole, and a button release lever having a protruding pressing portion at its free end. Fixed to the side plate of the first side plate so that the button release lever is pushed through the hole of the first side plate so as to press the button release lever when the tape cassette is housed in the cassette holder. First and second side brackets respectively facing the first and second side plates and button pressing means are provided, and the first and second side brackets are provided.
And the second side bracket has guide means for guiding the means for connecting the first and second side plates, respectively, and the button pressing means is formed on the inner surface of the first side plate and the button pressing means is formed. The lead release button and the button release lever are arranged on the horizontal movement path line, and when the cassette holder moves horizontally along the guide means by the driving means, the button release lever and the lead release button are pressed, It is characterized by releasing the locked state of the open lead.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The lead opening means is an inclined piece projecting upward from the tip of the bottom plate of the cassette holder, and the bottom surface of the lead of the tape cassette is inserted when the tape cassette is inserted into the cassette holder. Is partially opened by the inclined piece.

Further, the button pressing means is a bending member integrally protruding inward from the inner surface of the first side bracket of the cassette holder housing, and the bending member is such that the cassette holder is horizontally moved by the driving means. It is formed so as to press the outer surface of the button release lever when moving in the direction.

According to the tape cassette loading device of the video cassette recorder having such a structure, by forming the lead opening means at the bottom of the cassette holder, the tape cassette is accommodated in the cassette holder and at the same time the lead having a simple structure is formed. The leads of the tape cassette can be partially opened by the opening means. Also, by forming the lead opening means on the bottom of the cassette holder and forming the button pressing means on the side bracket, even if the button releasing lever does not press the lead opening button of the tape cassette housed in the cassette holder due to assembly tolerances or the like. During the movement of the cassette holder, the lead pressing button of the tape cassette is pressed by the button pressing means, so that the cassette lead can be completely opened. Therefore, no additional parts or components having a complicated structure are necessary.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of a tape cassette loading device for a front loading type video cassette recorder according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 2 is a diagram showing a main part of the tape cassette loading device of the present invention, and the description of the same components as in FIG. 1 will be omitted. As shown in FIG. 2, the tape cassette loading device of the tape recorder according to the present invention includes a cassette holder 40 for accommodating a tape cassette 40.
0, a cassette holder housing 100 for accommodating and guiding the cassette holder 400, and a driving means (not shown) for moving the cassette holder 400 in the cassette holder housing 100. The cassette holder housing 100 includes first and second side brackets (only the first side bracket is shown) 120 and first and second side brackets.
Upper plate 1 joined to the upper end of the side bracket 120 of the
Including 10 and.

The cassette holder 400 for accommodating the tape cassette 40 has a first side plate 410 and a second side plate (first side plate 410).
(Only the side plates are shown) and a lower plate 420 connecting the bottom ends of the bottom surfaces between the first and second side plates. Lower plate 42
An upright protruding stopper 421 is provided at the tip of 0 to prevent the tape cassette 40 from excessively entering the cassette holder 400. At least one of both side plates at the tip of the lower plate 420 is integrally formed with an inclined piece 422 that projects upward, which is the first feature of the present invention (only one is shown). As shown in FIG. 4, the inclined piece 42 protruding upward is shown.
2 may be formed at a position where it contacts the bottom surface 42b of the cassette lead 42 when the tape cassette 40 is inserted into the cassette holder 400. Therefore, the lead 42 can be partially opened upward by pressing the upward inclined piece 422 without releasing the lead 42 from the locked state by the lead release button 43.

As shown in the first side plate 410, the button release lever 430 is mounted on the movement path line of the lead opening button 43 of the tape cassette 40. Button release lever 4
30 is formed on the outer surface of the side plate 410 so as to receive the inward force of the side plate 410. Button release lever 4
The protruding pressing portion 431 of 30 is projected toward the inside of the side plate 410 through a hole 411 formed at a predetermined position of the side plate 410.

As another feature of the present invention, a bending member 123 is integrally formed on the inner surface of the first side bracket 120 so as to project inward. Bending member 123
Is positioned on the horizontal movement line of the button release lever 430 by the driving means. In addition, the bending member 1 manufactured separately
23 is fixed to the above-mentioned position of the side bracket 120. The bending member 123 is preferably formed by bending a rectangular plate. When the cassette holder 400 accommodating the tape cassette 40 is moved in the horizontal direction by the driving means (not shown), the button release lever 4 not pressed.
The tip portion of the bending member 123 is pressed against the outer surface of 30 (see FIG. 3).

Reference numeral 50 in the drawing denotes a lead opening cam having an inclined portion 51, and when the cassette holder 400 is loaded vertically downward, the inclined portion 51 completely opens the partially opened cassette lead 42.

The tape cassette loading device according to the present invention thus constructed operates as follows. When the user inserts the tape cassette 40 into the cassette holder 400, the tape cassette 40 is inserted into the front end portion 4 of the main body 41.
It advances in the cassette holder 400 until 1a contacts the stopper 421. At this time, the bottom plate 42b of the lead 42 enters along the upper surface of the upward sloped piece 422 corresponding to the lower plate 420, and as a result, the lead 42 rotates upward and a part thereof is opened (see FIG. 4).

In the VHS type tape cassette, the projecting pressing portion 431 of the button release lever 430 has the lead release button 4.
The bottom plate 42 of the lead is pressed even if 3 is not pressed.
Within a certain range when b receives an upward force (about 3 mm)
Since it is manufactured so that it can be lifted at, the above-mentioned opening of the lead becomes possible. When the front end portion 41 a of the cassette body 41 contacts the stopper 421, the lead release button 43 of the tape cassette 40 causes the button release lever 4 to move.
The lead 42 is pressed by the protruding pressing portion 431 of the 30.
The locked state of is released. User uses tape cassette 4
When the pushing force against the side plate of 0 is increased, the cassette holder 400 containing the tape cassette 40 is
The bosses 412 and 413 of the guide brackets 121 and 12 of the side bracket 120 are driven by driving means (not shown).
It is moved horizontally and vertically along 2. As shown in FIG. 3, the outer surface of the button release lever 430, as shown in FIG. 3, has the tip of the bending member 123 of the side bracket 120 while the cassette holder 400 moves in the horizontal direction even when the lead release button is not pressed firmly. Is pressed in contact with.

Therefore, since the lead 42 is released from the locked state by pressing the lead release button 43 of the tape cassette 40, the lead 42 is maintained in the completely opened state. Immediately after the horizontal movement is completed, the cassette holder 330 is moved vertically downward, and the bottom plate 42b of the lead 42, which is partially opened, of the tape cassette is formed by the inclined portion of the lead opening cam 50 provided on the deck (not shown). 5
As a result of contact with 1, the lead 42 is loaded onto the deck in a completely opened state due to the downward movement of the tape cassette 40.

[0022]

As described above, the cassette loading device according to the present invention is simple in that the upwardly inclined piece is formed at the tip of at least one side of the bottom plate of the cassette holder so as to partially open the lead of the tape cassette. In addition to reducing the required number of parts and man-hours for assembly, the assembly process is simplified and the production cost is reduced. In addition, since the bending member is arranged on one side bracket, even if the lead release button of the tape cassette is not pressed by the protruding pressing part of the button release lever due to assembly tolerances, etc. In addition, it is possible to surely change the lead of the tape cassette to the completely opened state, and thus it is possible to prevent the malfunction of the device having this configuration. Although the present invention has been described in detail above with reference to the embodiments, the present invention is not limited to the embodiments, and those having ordinary knowledge in the technical field to which the present invention pertains do not depart from the idea and spirit of the present invention. Can be modified or changed.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a partial configuration of a conventional tape cassette loading device.

FIG. 2 is an exploded perspective view showing a main part of the tape cassette loading device of the present invention.

FIG. 3 is a plan view showing a process of pressing a lead opening button by a button release lever having a bending member of the tape cassette loading device of the present invention.

FIG. 4 is a side view showing a state where a lead of the tape cassette is partially opened by an upward projecting inclined piece when the tape cassette is inserted into the cassette holder of the tape cassette loading device of the present invention.

[Explanation of symbols]

 40 tape cassette 42 lead 42b bottom plate 43 lead release button 51 inclined part 100 cassette holder housing 110 upper plate 120 first and second side brackets 123 folding member 400 cassette holder 410 side plate 420 lower plate 421 stopper 422 upward inclined piece 430 button release Lever 431 Projection pressing part

Claims (4)

[Claims] 1. A tape cassette is loaded into a video tape cassette recorder, which has a lead that can be opened by pressing a lead release button and a drive means.
In a tape cassette loading device of a front-loading type video cassette recorder for unloading, the device comprises a cassette holder for accommodating the tape cassette and moving it horizontally and vertically by the driving means, and the cassette holder comprises first and second cassette holders. A second side plate, each of the first and second side plates having an outwardly projecting coupling means, the cassette holder being between the first and second side plates and at the bottom end of the side plate. A bottom plate connected to the bottom plate, the bottom plate having lead opening means for partially opening the leads of the tape cassette, the first side plate having a hole, and a button release lever having a protruding pressing portion at its free end. The button release lever when the button is fixed to the first side plate and the tape cassette is accommodated in the cassette holder. The button release lever so as to press the first
A first side plate protruding through a hole in the side plate of the first side plate, and a first side plate facing the first and second side plates, respectively.
And a second side bracket and a button pressing means, wherein the first and second side brackets have a guiding means for guiding the means for connecting the first and second side plates, respectively. Is formed on the inner surface of the first side plate and the button pressing means is arranged on the horizontal movement path line of the lead opening button and the button releasing lever, and the cassette holder is horizontally moved along the guiding means by the driving means. A tape cassette loading device for a front loading type video cassette recorder, characterized in that, when moving, the button release lever and the lead release button are pressed to release the locked state of the release lead. 2. The lead opening means is an inclined piece projecting upward from the tip of the bottom plate of the cassette holder, and when the tape cassette is inserted into the cassette holder, the bottom surface of the lead of the tape cassette is The tape cassette loading device of the video cassette recorder according to claim 1, wherein the tape cassette is partially opened by an inclined piece. 3. The video cassette recorder according to claim 2, wherein the button pressing means is a bending member integrally projecting inward from an inner surface of the first side bracket of the cassette holder housing. Tape cassette loading device. 4. The button pressing means is formed separately from the first side bracket of the cassette holder housing, and the button pressing means projects from an inner surface of the first side bracket. The tape cassette loading device of the video cassette recorder according to 2.