JPH0516670Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to front loading of video tape recorders, and is a front loading system that uses the driving force of a reel motor to front load video tape cassettes. This invention relates to a deing device.

[Conventional technology]

A front loading device for a commonly used video tape recorder (hereinafter referred to as VTR), that is, a device for inserting and ejecting a cassette from the front of the VTR body, is shown in FIGS. 5 and 6. Guide pins 3 protruding from both side walls of the cassette holder 2 to be inserted are used to guide the VTR.
It protrudes from a guide hole 5 of a side wall 4 provided upright on the main body (not shown), and is further inserted and connected to a clamping groove 8 of a loading arm 7 driven by a loading motor 6. .

In such a conventional front loading device, when the loading motor 6 is rotated and the loading arm 7 is rotated clockwise, the cassette holder 2 moves from the state shown by the broken line to the state shown by the imaginary line.
The cassette 1 inserted therein is stably mounted on the reel table 9. When taking out cassette 1, load motor 6
By rotating the loading arm 7 interlocked therewith in the opposite direction, the cassette holder 2 moves from the state shown by the imaginary line to the state shown by the broken line, and the cassette 1 is taken out.

[Problem that the invention attempts to solve]

The front loading device as described above requires a separate motor for front loading the cassette, which increases the cost of the product.

In addition, in the conventional technology, the power is separated from the tape loading motor, which drives various tape loading mechanisms, pulls out the tape from a cassette stably attached to the reel table, and loads it into the traveling system. Devices for front loading cassettes have been used, but such devices have the problem of requiring the use of a complicated mechanism that utilizes solenoids and planetary gears.

In order to solve the above-mentioned conventional drawbacks, the present invention provides a front loading device with a simple structure that uses the reel motor as a power source by utilizing the non-driving time of the reel motor.

[Means for solving problems]

The configuration of the present invention as a means for solving the above problems will be explained with reference to FIGS. 1 to 4 corresponding to the embodiments. A gear 25 that meshes with a drive gear 20 fixed to the rotating shaft of the reel motor is attached to one side end of the lever 23, and a pulley 24 and a front loading arm 14 are integrally formed on the lower surface of the gear 25. A pulley 32 fixed to the rotating shaft 31 of the worm to be interlocked is connected by a belt 33, and the front loading of the cassette is performed by the driving force of the reel motor.

[Effect]

The present invention utilizes the fact that, as shown in FIG. 4, there is a time difference between the front loading device driving timing, the tape loading motor driving timing, and the reel motor driving timing. After the front loading device is activated in the mode configuration order to stably attach the cassette to the reel table, the tape loading motor is activated to perform each mode function. In this case, the reel motor does not perform its original function of driving the reel table and is stopped.

Therefore, the front loading device is driven by the reel motor, and after the cassette is stably attached to the reel table, another simple mechanism operated by the drive power of the tape loading motor shuts off the power supply. The functions of the reel motor in each mode are performed.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 to 4, the side wall 10 of the tape recorder has a guide groove 11 bent at right angles.
is provided, and a pin 12a protruding from the cassette holder is engaged with this guide groove 11. pin 1
2a further engages with a bifurcated portion 14a at the tip of the loading arm 14, and the gear portion 14b of the loading arm 14 meshes with the worm 13.
On the other hand, the reel table 15 has a reel motor 17
It is designed to be driven by an idle gear 19 that meshes with a pinion 18 that is driven by. Therefore, when the worm 13 is rotated, the loading arm 14 is rotated, so that the pin 12a moves along the guide groove 11, and the cassette 16 held by the cassette holder 12 is loaded onto the reel table 15. become.

A gear 20 is integrally formed at the lower part of the pinion 18 of the reel motor 17, a lever 23 is pivotally attached to the base plate 21 via a pin 22, and a pulley 24 and a gear of the reel motor 17 are attached to one end of the lever 23. 20 and a gear 25 that meshes with it are integrally formed and installed, a contact pin 26 is provided upright at the other end, and a tension spring 34 is connected to the other end,
The contact pin 26 is in contact with contact surfaces 29 and 30, which are formed on an operating plate 27 for various mode conversions driven by a tape loading motor (not shown) and have an inclined stepped portion 28 in the middle. I try to be moved. A belt 33 connects a pulley 24 attached to one end of the lever 23 and a pulley 32 connected to a rotating shaft 31 of the worm 13.

In the present invention configured as described above, when loading the cassette or when there is no load, the actuating plate 27 moves and the contact pin 26 of the lever 23 is positioned at the contact surface 29 at a lower position. Spring 34
As a result, the gear 25 at the one end meshes with the gear 20 of the reel motor 17. Therefore, the pulley 32 of the worm 13, which is connected to the pulley 24 by the belt 33, is rotated, and the worm 1
The loading arm 14 meshed with the cassette 16 is driven to load or unload the cassette 16.

Next, when leaving the cassette in the attached state, the actuating plate 27 is moved so that the contact pin 26 of the lever 23 is positioned on the contact surface 30 at a high position, and the one side The gear 25 at the end is separated from the gear 20 of the reel motor 17 to prevent power from being delivered to the loading arm 14.

Furthermore, the present invention can be easily applied not only to the case where the power of the reel motor 17 is used as explained above, but also to the case where the idler and the reel table are driven by receiving power from the capstan motor. be able to.

[Effect of idea]

As mentioned above, the present invention can drive a front loading device by adding only a relatively simple contact means without using a separate front loading motor, so it is compatible with a front loading motor. This has the advantage of saving on the use of accompanying electrical equipment parts and eliminating factors that increase costs. In addition, the driving force for the front loading device is transmitted from the reel motor by the meshing of two gears, so the meshing of these two gears can occur at any point on a certain circumference centered on the axis of the reel motor. This is effectively achieved, and noise generation and inaccurate power transmission can be avoided compared to conventional mechanisms where the optimum meshing is limited to only one point, such as the meshing of three gears. Furthermore, since the driving force is transmitted and interrupted by the movement of the actuating plate, the drive switching lever can be designed easily. Furthermore, compared to conventional systems in which the transmission gear and pulley are constantly rotated even when the power of the reel motor is not transmitted to the front loading mechanism, there is no power loss in the reel motor, and the recording and The performance of the video tape recorder is not affected during playback.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the present invention in a cassette loading state, FIG. 2 is a plan view showing the same device in a state when loading is completed, and FIG.
The figure is a side view of the same device, FIG. 4 is an explanatory diagram showing the front loading drive timing and the loading motor drive timing, FIG. 5 is a schematic perspective view of a conventional front loading device, and FIG. 6 is the same as the above device. FIG. 6 is a side view showing a cassette loading state and an unloaded state. 10... Tape recorder side wall, 12... Cassette holder, 13... Worm, 14... Loading arm, 15... Reel table, 16...
...Cassette, 17...Reel motor, 18...
Pinion, 19... Idle gear, 20... Gear, 21... Board, 22... Pivot, 23... Lever, 24... Pulley, 25... Gear, 26...
...Contact pin, 27...Operating plate for various mode conversions,
29, 30... Contact surface, 32... Pulley, 33...
…belt.

Claims (1)

[Scope of utility model registration request] A cassette holder 12 guided by a side wall 10 of the tape recorder is driven by a loading arm 14 actuated by a worm 13 so that a cassette 16 is loaded onto a reel table 15, which is driven by a reel motor. 17 pinion 18 and idle gear 19
In the front loading device, a gear 20 is integrally formed on the pinion 18 of the reel motor 17,
A lever 23 is pivotally attached to the lever 23 with a pivot 22, and the lever 23 is
A pulley 24 and a gear 25 are integrally formed and mounted on one end, and a contact pin 26 is provided upright on the other end, and a tension spring 34 is connected to the other end. Actuation plate 27 for various mode conversion
in contact with two contact surfaces 29 and 30 formed in
This front loading device for a video tape recorder is characterized in that a pulley 24 attached to one end of a lever 23 is connected to a pulley 32 attached to a worm 13 by a belt 33.