JPS59180840A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To simplify both brake control and clutch switching functions of a take-up reel disk and to miniaturize a magnetic recording/reproducing device, by applying the brake with a pinch roller which is press-contacted to and detached from a capstan in accordance with the working mode of the recording/ reproducing device. CONSTITUTION:In the video record, reproduction and reverse reproduction modes of a VTR, a pinch lever 21 is turned clockwise up to a position where a pinch roller 16 is pressed to a capstan 15. In this case, a kick pin 43 is shifted by a pawl part 21a to turn a coupling gear lever 47 counterclockwise round the center of a rotary support shaft 49. As a result, the engagement is released between a coupling gear 52 and the 1st and 2nd reel gears 4d and 4b. At the same time, a brake gear 50 gears into the gear 4b by means of a spring 51 to perform the brake control. When the operation is switched to a fast forward or rewind mode, the lever 21 is turned counterclockwise. Then a kick pin 42 is shifted by the part 21a, and the gear 52 gears into the gears 4d and 4b. Then the engagement is released between the gears 50 and 4b.

Description

[Detailed description of the invention] Utilization field of 1.6 soil The present invention relates to a drumbeat recording and reproducing device.

A conventional video tape recorder (hereinafter referred to as Vl-R) will be explained with reference to FIG. 1. Figure '1 is a conventional VTR
FIG. In the figure, 2 (31, magnetic 7-pu pulled out from the carriers 1 to 1, 3 a supply reel stand, 4 a take-up reel stand, 5 a tension post rotatably supported by the seat) , 6 are P1 bosses 1 to 1 supported by a rotating white stone on a fixed shaft (not shown) installed in the chassis. 7 are full-width erasing heads, and 8 and 9 are for pulling out the magnetic tape 2 from the cassette 1. The height regulating post, 10.11 is the inclined boss 1- installed opposite the height regulating bosses l-8 and 9.12 is the A-eye oil race head, and 13 is the A-di A
Control 1 - roll head, 14 a P4 boss, 19 a cylinder equipped with a rotary head (not shown), 16 a key I7 bustan 15 for running and stopping the magnetic jump 2.

There is a pinch roller r that can freely come and go. 17. 18 is a guide roller for guiding the magnetic j-pu 2 which has been inserted into the force reflex 1-1, and 121 is a guide roller for rotating the pinch roller 16 with the pinch lever rotation shaft 32 as a fulcrum. It is a binge lever that can be attached in a possible state and is connected to the solenoid 20 via a lever 37.

38 Installed on the shaft of the LL reel 7-tar 22 (in the reel motor 1)
(There is.

In addition, I intentionally caused the rotation of the eye 1-ra wheel 23! The rear idler gear 23 is selectively engaged with either the take-up reel stand 4 or the supply reel stand 3 in the direction of rotation of the reel starter 22, causing friction loss. It has a configuration that allows it to be moved. 24 is an idler lever C' which is rotatable around the axis of the reel motor 22, 1 is for rotating the rotation support shaft 39 of the idler gear 23, 26 is a main play 1 for braking the supply reel stand 3: 27 is the main play 1 for braking the take-up reel r84. 28 is the soft 1-brake 1 brake for braking the take-up reel stand 4. 28.30.31 is the main brake 26°27 and the rough 1-play. -'V28 rotation shaft, 3"+, 3G is play"1 spring C is 5, 33
is the main brake 26, 27 is the solenoid operated through 21-25, 34 is the soft 1-brake 28
The solenoid that operates it'>.

Next, the operation of this device will be explained. When the recording or playback mode is switched, the magnetic tape 2 is pulled out from the cassette 1 in the direction of the arrow △ by the height regulating posts 8 and 9 and fixed at a predetermined position. Kotogi main brake 26.
27 and rough 1 to brake 28 are released. Next, the solenoid 20 moves, the pinch roller 16 is pressed against the capstan 15, and at the same time the capstan 15 and the reel 22 rotate, and the capstan 15 sends out the magnetic chip 12 at a constant speed. The reel motor 22 rotates the take-up reel stand 4 with a preset rotation torque to wind up the magnetic tape 2. Next, reverse play! When switching to 1 [- mode, capstan 15 and reel [- mode 2
2 is reversed, and at the same time, the solenoid 34
゛The brake 28 operates to apply a predetermined pack tension to the take-up reel stand 4, and the tape tension on the inlet side of the capstan 15 is set to a larger value than the tape tension on the outlet side, and the j-b runs. Crying for the stabilization of Next, when switching to the tape fast forward (rewind) mode, the binge [, 1-ra 1 G G;
11 LJ, F// Reel motor 22 in the divided state
As a result, one move (rewind) of Arp is performed, and 1♀I
+-: [--1~(□1..1..74, r brake 26.2'7 brakes the supply reel stand 3 and the take-up reel stand 4.

1] In the configuration from 1 to 4 from 'cL, stop]
1 It is necessary to control the take-up reel stand 4 independently from the main brake 26, 27 that operates in mode C. Extra space must be provided (),
VloIR has become a big obstacle in terms of miniaturization and cost.
1-j"ing state (・performing and °:) As the fast forwarding (rewinding) time continues to be shortened, the winding and closing C of the reel is required to have a high speed of 11" and a high 1-lux. 〈1〈1〈1〈1〉The friction of each tape boss 1~ has been modified, or the 7-butane of the magnetic i-brake winding has been set low in response to the use of vaporized tape with a large coefficient of friction. When it comes to be required to do this, low rotation and low torque are required as the characteristics of the reel that performs magnetic boom winding during playback. ``The reel motor C is realized, and when playing, the 1-lux margin at the T knee 1- of low torque rotation speed becomes extremely small, ensuring sufficient stable rotation of the reel motor. 1. Purpose of the Invention The present invention solves the drawbacks of the prior art as described above. It improves the reliability of the reel motor during playback, and also improves the reliability of the reel motor during playback. 1. Structure of the Invention Aims to Ensure the Winding Torque as Conventional and Miniaturize the Device 51 In order to achieve the above object, the magnetic recording/reproducing device of the present invention has a structure for winding a magnetic tape. 1.
a take-up reel stand having a clutch function for winding the tape at a constant rate, a control brake supported so as to be able to come into contact with and separate from the take-up reel stand, and a clutch for the take-up reel stand. When the pinch opening roller is crimped to the capstan and separated depending on the operation mode of the device, the brake is applied and the pinch roller is When separated from the capstan, the winder is directly connected to the spool of the winding table.

DESCRIPTION OF THE EMBODIMENT Below, an embodiment of the present invention will be described below.
This will be explained based on FIG. Note that the arrows in the drawings are the same as those in FIG. 1, and the detailed description thereof is omitted. Furthermore, the present invention is applicable to the conventional rough 1 to -silley 1-2 shown in FIG.
+, solenoid 34, replace play 1 spring 3G'
CIJ is structured as below.

In the figure, 44 is the rough 1~brake lever attached to the connecting gear lever 47, which is rotatable around the beef 41, and has a gear shaft 4° at one end, and a gear shaft 4° at the other end. is equipped with a kick bin 42. 5o is Yamanaka axis 4
The brake gear is attached to the soft brake lever 44 in a rotatable state by (), and is pressed (-J) by the sono 1-play 1 spring 46 through the fer 1 to holder (J45). ] A gray-1 horn is provided by the bolt 48. 52 is a connecting gear that can rotate freely around the gear shaft 41. There is a kick bin C provided on the connecting gear lever 47 at 43. t at 49. There is a starting support for the connecting gear lever 47 installed on the board.

FIG. 4 shows the details of the take-up reel stand 40, where 4a is a spline, 4d is a first glue 111, and is integrated with the reel stand 4. 4b is the second gear that meshes with the idler gear 23.
When the reel gear is brought into pressure contact with the first reel width 4d by the reel spring 40 and a certain slot 4c, the reel is placed on the take-up reel stand 4 in one turn.
3, -h, which has a structure that transmits the rotation 1~luke of 2.
The /rake gear 50 is located in a position where it meshes only with the second reel south center 41), and the connecting gear 52 is located in the position where it meshes only with the second reel south center 41).
and the second reel gear 41), and is structured to eliminate the crudging function of the take-up reel stand 4 during fast forwarding (rewinding) of the magnetic deso.

Next, we will explain the operation of this device as shown in Figures 1 and 2 (as shown in J, when V-rR is in recording, playback, or reverse playback mode,
The pinch lever 21 is rotated in the opposite direction by a solenoid 20 to a position where the bottle roller 16 comes into contact with the capstan 15. At this time, move the pin 43 that is attached to the connecting gear lever 47 by the claw part 21a integrally formed on the bottle prepper 21. Rotating support 1flI1
49 and anti-11. ) ill / turn backwards. As a result, the engagement between the connecting shaft 52, the first reel gear 4d, and the second reel 1's 411 is released, and at the same nrq, the luff 1 connecting the lever 44 and the board is released. ~J to Breagi spring 51, Replay: 1 In the rain! IO interlocks with the second reel tooth Φ4b, and in internal and reverse playback modes, always controls the player. When you can rewind 1 duck and cut it to 7 degrees, Bin 1-1/Bar 21 T
J, by rotating in the anti-++near direction and moving the kick bin 42 installed in the claw part 21a and the rim 1-brage 1 collar 44, the iuj joint Φ52 and the first reel are moved. The gear /I (l and second reel tooth 41) mesh with each other, and the brake gear 50 engages with the second reel gear /Ib.
The engagement with is released.

According to the present invention, the brake l'l 611 function of the take-up reel stand and the Clara 71JJ of the take-up reel stand are as described in the invention of Dano Song Yi.
1% function is simple (can be configured in a compact and compact size).During recording and playback, the take-up reel stand's Fretsu 1 function allows the reel to take up 1 independently of the reel motor rotation speed. Since it is possible to set the winding force to It is possible to directly connect the Herc to the reel. Even if you use a small reel motor, when playing, you can turn the reel at a low rotation speed of 1 to 100 mph, and when playing fast forward, turn the reel to a high 1 to 100 mph. I learned that it is possible to drive at high rotational speeds.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of a conventional magnetic recording/reproducing device, FIGS. 2-5 show an embodiment of the present invention, FIG. 2 is a schematic plan view of the magnetic recording/reproducing device, and FIGS. 4 is an enlarged vertical sectional view of the main part, and FIG. 5 is an enlarged longitudinal sectional view of the main part. 4... Take-up reel stand, 4a... Spline, 4b...
...Reel gear, 4C...Felt, 4d...Reel gear, /I c...Reel spring, 15...
A-t Bustan, 16...bin f II-So, 2
0...Solenoid, 21...Pinch lever, 21.
11...Claw part, 22...Turn the reel once, 23...
j′ Hydraer Φ, 40.41...Gear shaft, 42.43
...Kinkubin, 44...Saw blade lever, 4jj...F]lt C+-j, 4G...Soft brake spring, 47...Connection tooth medium lever, 48
... Felt, 49... Rotation support shaft, 50... Play '1 gear, 51... Rough 1 ~ Brayer sub link,
5? ...) Yoshihiro Moriki, the agent for the application, Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 5, 1tO//

Claims (1)

[Claims] :: 1, - 11 for supporting a reel for winding the
Clara f ((
1) A take-up reel stand, a control play 1 supported so as to be able to move toward and away from the take-up reel stand, and a clutch directly connected to the take-up reel stand. Equipped with a right-handed member, the operating mode of the device (1-I! Binge roller crimped to the capstan, separated from the binder roller crimped to the capstan)
When the play-1 acts and the binbu [1-ler leaves the -1-dobustan, the clutch of the take-up reel stand is directly connected. Awakening.