JPS6350964A - Cassette loader - Google Patents

Abstract

PURPOSE:To reduce the cost by directly rotating a driving arm by the rack equipped via a guide horizontally movably at one side of the side face plate arranged at both sides of the cassette holder containing a cassette. CONSTITUTION:A rack 23 is moved to the arrow mark (a) direction with the rotation of an output gear 28 and a driving arm 19 is rotated in the arrow mark (b) direction. A tooth 25 is provided at one end of the rack 23 enabling a horizontal motion by engaging with the output gear 28 transmitting the output of the driving motor for a magnetic recording and reproducing device on the magnetic recording and reproducing device. A series of motions of the loading and unloading of the cassette can be performed without an exclusive motor by composing the driving arms 19, 19' equipped with a gear 22 so as to engage therewith. Consequently a simple and inexpensive cassette loader is made.

Description

DETAILED DESCRIPTION OF THE INVENTION Page 2 Field of Industrial Application The present invention relates to a front-loading type cassette mounting device used in a cassette type magnetic recording/reproducing device.

BACKGROUND OF THE INVENTION In recent years, cassette loading devices for cassette tape recording and reproducing devices such as video tape recorders (VTRs) have mainly been of the front-loading type in which the cassette is loaded from the front.

An example of the above-mentioned cassette mounting device will be described below with reference to the drawings.

FIG. 5 shows the configuration of a conventional cassette loading device.

In Fig. 6, 1 is a cassette holder for storing cassettes, 2.2' is a side plate placed on both sides of the cassette holder 1, 3.3' is a side plate), and 2.2' is an L-shaped plate. These are usually two or three guide grooves each. 4゜4' are side wall members integrally constructed on both sides of the cassette holder 1, each having a guide pin 6゜3 page 6' that engages with the guide grooves 3, 3' provided in the side plate 2.2'. are provided corresponding to the number of guide grooves. and others.

6' is a transmission gear connected by a shaft 7 and rotatably supported on the side plate 2.2';8.8' is a gear meshing with the transmission gears 6 and 6', respectively; 2
．． The main guide pins 5, 5' on the side wall members 4, 4' of the cassette holder 1 are inserted into the guide grooves 9, 9' provided at the tips of the drive arms, which are rotatably supported by shafts 2', respectively. are engaged with each other. Reference numeral 10 denotes a drive motor fixed to the side plate 2, connected to the motor output shaft by a joint, and a worm shaft 1 supported by the side plate 2.
1, and a transmission gear 6 is driven via a worm wheel 12 that meshes with this worm.

13 is a top plate that connects the side plates 2 and 2'.

The operation of the conventional cassette loading device configured as described above will be described below.

When the trench 1 cassette (not shown) is inserted into the cassette holder 1 from the front, a switch (not shown) is activated, and the drive motor 10 starts rotating and rotates the transmission gear 6 via the worm 11 and worm wheel 12. a drive arm 8, which is moved and also meshes with a transmission gear 6,6', respectively;
Rotate 8'. Therefore, the cassette holder 1, which is integral with the guide pin 5.5' engaged in the guide groove 9.9' provided in the drive arm 8.8', is connected to the L-shaped guide groove 3.3 of the side plate 2.2'. ′ from the horizontal movement to the vertical movement to complete the cassette loading operation.

Problems to be Solved by the Invention However, as mentioned above, the conventional cassette mounting device is generally equipped with a dedicated and expensive drive motor, and also requires a reduction gear device or the like to maintain an appropriate rotation speed of the drive arm. The problem was that it was common to equip it and it was expensive.

In view of the above-mentioned problems, the present invention eliminates the need for a dedicated drive motor, reduction gear device, etc. on the premise that the capstan drive motor of the main body of a magnetic recording/reproducing device is generally used, and produces an inexpensive cassette with an extremely simple configuration. A mounting device is provided.

Page 5 Means for Solving the Problems In order to solve the above problems, the cassette mounting device of the present invention has a guide that can be horizontally moved on one side of the side plate disposed on both sides of the cassette holder that stores the cassette. The drive arm is directly rotated by a rack installed through the rack, and teeth are formed at one end of the rack in a position that does not mesh with the gears formed on the drive arm. It has a configuration that meshes with the output gear.

Function: The present invention provides an excellent cassette loading device that enables a significant reduction in cost due to the extremely simple configuration described above.

EXAMPLES Hereinafter, examples of the present invention will be described with reference to the drawings.

FIG. 1 shows the configuration of a cassette loading device according to an embodiment of the present invention. In FIG. 1, 14 is a cassette holder, 16.16' is a side wall integrally constructed on both sides of the cassette 6 page holder 14, 16
, 16' is a guide pin provided on the side wall 16.16', 1
7.17' is a side play placed on both sides of the cassette holder 14), 18.18' is a side play) 17, 1
7' with L-shaped guide grooves, each with 2 or 3 guide grooves.
The guide pins 16 and 16' are respectively engaged with each other. Note that the guide pins 16 and 16' are in the guide groove 1.
8 and 18'. 19,
19' is connected by axis 2o, side play) 17, 1
The main guide pins 16 and 16' on the side wall members 15 and 15' of the cassette holder 14 are respectively engaged with the guide grooves 21 and 21' provided at the tip of the drive arm rotatably supported by the drive arm 7'. ing. One of the drive arms 19 or 19' is integrally formed with a gear 22 coaxially with the shaft 2o. 23
is a rack, which has a guide groove formed to be able to move horizontally by fitting into two guide pieces 24 and 24' provided on the side plate 17 or 17', and has a gear 2 at one end.
A number of teeth 25 mesh with the gears 25 bent into an L-shape, and a gear 22 integral with the male arm 19 or 19' at the end of the blade. and the same number of teeth 2
It consists of 6.

27 is a switch element that is linked to the operation of the rack 23, and detects the beginning and end of the operation stroke of the rack 23;
The switch body is fixed to the side plate 17 or 17'. Reference numeral 28 denotes an output gear provided in the main body of the magnetic recording/reproducing apparatus, and when the cassette mounting apparatus of this embodiment is attached to the main body of the magnetic recording/reproducing apparatus, the output gear 28 is connected to the teeth 26 formed on the rack 23 with the phase adjusted in advance. It is something that is interlocked.

Generally, magnetic recording and reproducing devices use gap drive.

Various drive sources are required, such as a tape loading mechanism drive, a reel stand drive, etc., but due to the required performance, cost, etc., it is necessary to use dedicated motors for each, or to use several motors for multiple functions. Various configurations have been put into practical use. Generally, when a drive motor has multiple functions, it is necessary to switch the thickness and direction of the output of the drive motor for each function using various latch mechanisms using a combination of two mechanical or electric solenoids.

FIG. 2 is a block diagram showing an example of a magnetic Her recording/reproducing main playback device operating system in this embodiment. In this embodiment, all operations except the cylinder are performed only by the capstan motor.

In Fig. 2, 29 is a direct drive capstan motor, 30 is a first reduction system, 31 is a second reduction system, 32 is a reel stand, 33 is a first clutch, and 34 has a type of clutch function. A third reduction system, 36 a fourth reduction system, 36 a tape loading output system for performing a tape loading operation, 3 a second clutch, and 38 a fifth reduction system.

39 is an output system of a system that controls the operation mode of each mechanism, 40 is a sixth reduction system, and 28 is an output gear connected to the cassette mounting device of this embodiment.

The first clutch 33 is used to switch between operations such as cassette loading and tape loading and tape running operations, and there is no connection between the first reduction system 30 and the second reduction system 31, as shown in the figure. However, it is equipped with a mechanism that connects or cuts off the rotation of the capstan motor in conjunction with the operating mode control system, and is connected when the tape is running. Although various other configurations are possible for the drive system as described above, in this embodiment, the main purpose is to use the drive source of the magnetic recording and reproducing device instead of the drive motor dedicated to the cassette loading device. can be.

Since the drive system itself is not the objective, details regarding the drive system will be omitted.

FIGS. 3 and 4 are schematic side views of essential parts for explaining the operation of the cassette loading device constructed as described above. FIG. 3 shows the state before the cassette is inserted.

Now, when the output gear 28 rotates, the rack 23 moves in the direction of the arrow a, and the drive arm 19 rotates in the direction of the arrow. FIG. 4 shows a state in which the cassette has been completely installed in a predetermined position. Note that the configuration required for a series of operations, such as the mechanism for unlocking and opening the guard lid of the cassette and the mechanism for pressing the cassette upon completion of mounting the cassette, is the same as the conventional one, so a description thereof will be omitted.

As described above, according to this embodiment, teeth are provided at one end of the rank that can be horizontally operated by meshing with the output gear that transmits the output of the drive motor for the magnetic recording and reproducing apparatus. By configuring a drive arm equipped with gears so as to mesh with the drive arm, it is possible to provide a simple and inexpensive cassette loading device that can perform a series of operations of loading and unloading the cassette without a dedicated motor.

Effects of the Invention As described above, according to the present invention, an extremely simple and inexpensive configuration without a motor or a speed reduction system can provide excellent effects that can significantly reduce costs.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a cassette loading device according to an embodiment of the present invention, FIG. 2 is a block diagram showing an example of a drive system of a magnetic recording/reproducing apparatus according to this embodiment, and FIGS. FIG. 5 is a schematic side view of main parts for explaining the operation of an example. FIG. 5 is a perspective view showing the configuration of a conventional cassette loading device 11. 14...Cassette holder, 15.16'...
...Side wall, 17.17'...Side play)
, 19°19'... Drive arm, 22...
...Gear, 23...Rack, 24.24'...
...Guide piece, 28...Output gear. Name of agent: Patent attorney Toshio Nakao (1 person, 28)
- Record 29 --- 7 people in total 02-m - Sole stand 33-11-o 1 car 2 runners 3 cows - 11 years old 3 low-speed type 35-years old 4 fishing 3G-m-day 7″ to gain 7″ output plan 37---Y2
Su2in1. + 3B-11 years old 56 years old a9---mechanical atγmo) Published system > 41 output etc., 4o---2cq5JL1゜Figure 3Figure 4

Claims (1)

[Claims] A cassette holding member for storing cassette tapes having a plurality of protrusions formed on side walls provided on both sides, and a side plate having a plurality of L-shaped guide grooves that engage with the protrusions arranged on both sides of the cassette holding member. a shaft that is rotatably supported by the side plate and has a guide groove on each side fixed thereto, which engages one of the protrusions, and a shaft that is coaxial with the shaft on one of the arms; A gear is integrally formed in the gear, and teeth are formed in a region that meshes with the gear and rotates the arm at a certain angle, and teeth are formed in a region that does not mesh with the gear over the same length as this region. , and a rack that is horizontally movable along a guide member provided on one side of the side plate.