JPH0353713B2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention also uses a tape loading motor,
The present invention relates to a unitized brake actuation device using the tape loading motor as a power source. (b) Conventional Example Usually, a plunger device that utilizes the suction force of a solenoid is used as a brake actuating device for a VTR reel stand. In all modes in which the reel stand rotates, the solenoid is energized and the operating pin that operates the brake on the reel stand is attracted to the solenoid side, so the brake lever operates to release the brake on the reel stand and release the brake. ing. Furthermore, when the reel stand is in a non-rotating mode during tape unloading, the solenoid is not energized and the actuation pin is moved away from the solenoid side by the spring between the solenoid and the actuation pin, causing the brake to come into contact with the reel stand. It is in the brake state. However, in order to operate the brake lever, an electric means is required to energize the solenoid, and in the mode in which the reel stand rotates, current must constantly flow through the solenoid, and the plunger device is compared to a VTR chassis. The drawbacks were that they took up a lot of space and were expensive. (c) Object of the Invention The present invention aims to eliminate the above-mentioned drawbacks, and aims to use a tape loading motor in combination with a brake actuation device to make the brake device compact and unitized. (d) Structure of the invention A drive means driven by a tape loading motor in a tape loading mechanism, a pinion coupled to the drive means in a frictional relationship, a sliding lever having a rack, an iron piece, and a protrusion, and a brake release. The brake actuating device is constructed by unitizing the holding means and having a brake lever in contact with the protrusion. (e) Examples The details of the present invention will be specifically explained by referring to illustrated examples. Fig. 1 is a plan view of the brake actuating device of the present invention showing a state in which the iron piece and the solenoid are separated, and Fig. 2 A and B show the brake actuating device of the present invention in a state in which the solenoid and the iron piece are in contact with each other. 3 is a plan view and a side view of the brake actuating device of the present invention shown in FIG. 1, showing a main part in which the reel stand and the brake are in contact when the solenoid and the iron piece are separated from each other. 4 and 5 are plan views of essential parts of the brake actuating device of the present invention shown in FIG. 2, showing a state in which the solenoid and iron piece are in contact with each other during tape loading and the reel stand and brake are separated; FIG. This is a side view of the main parts, and in FIG. 5, 21 is a chassis. In the unitized brake actuating device 23 shown in FIGS. 1 and 2 A and B, a belt is attached to a pulley 3 press-fitted onto the motor shaft 2 of the tape loading motor 1 and a pulley 5 attached to the same shaft as the worm gear 4 serving as the driving means. The power of the tape loading motor 1 is transmitted to the worm gear 4 via the tape loading motor 6. A pinion 7 in a friction relationship is provided between the worm gear 4 and the pulley 5, and a sliding lever 11 is provided on the upper part of the pinion 7, which has a projection 10 with a rack 8 and an iron piece 9 that engage with the pinion 7. When the tip of the lever (not shown) is brought into contact with the protrusion 10 and the sliding lever 11 slides in the opposite direction of the solenoid 12 by interposing the spring 20 to the brake lever 18 in FIG. 3, the supply reel stand 19 and the take-up reel stand 28 are in a brake holding state. During tape loading for recording, playback, queue, review, etc. modes, after the cassette is installed, the tape loading motor 1 rotates counterclockwise in FIG. 5, and the power of the tape loading motor 1 is transferred to the worm gear 4. The transmission is transmitted and the tape loading mechanism is driven by the meshing of the worm gear 4 and the master gear 22 shown in FIG. 5. At this time, the pinion 7 rotates counterclockwise in FIG. The sliding lever 1 is in a state where the solenoid 12 and the iron piece 9 shown in FIG.
The sliding direction of the solenoid 1 is regulated by the first guide groove 13 and the guide pin 14, the second guide groove 15 and the guide pin 16, and the solenoid 1 slides in the direction of the solenoid 12 without the need to energize the solenoid 12. The iron piece 9 comes into contact with the iron piece 9, and as shown in FIG.
Due to the movement of the protrusion 10, the brake lever tip 1
The brake 24 of the brake lever 18, which is in contact with the first protrusion 10, is released from the supply reel stand 19 and the take-up reel stand 28, and the supply reel stand 19 and the take-up reel stand 28 shown in FIG. Release the brake 24 that came into contact with. Further, since the pinion 7 is in a frictional relationship with the worm gear 4, even after the solenoid 12 and the iron piece 9 come into contact with each other and the pinion 7 stops, the worm gear 4 is rotated by the power of the tape loading motor 1 and continues to release the brake 24. At this time, the master gear 2 shown in FIG.
2, the sliding plate 2 has a second protrusion 26.
7 slides in a direction perpendicular to the sliding direction of the sliding lever 11 , and the sliding lever 11 and the sliding plate 2 are in a state where the solenoid 12 and the iron piece 9 shown in FIG. 3 are separated from each other.
7 is a sliding plate 27 that slides during tape loading.
The sliding lever tip 25 is attached to the second projection 26 of the fourth
It is locked as shown in FIG. Tape loading motor 1 after tape loading is completed
stops. During tape loading, the solenoid 12 is not energized and the iron piece 9 is in contact with the solenoid 12, but as mentioned above, the second protrusion 26 and the sliding lever tip 25 are in the locked state as brake release holding means. Due to a malfunction of the tape loading motor 1, etc., the solenoid 12 and the iron piece 9 are separated, and the brake 24 comes into contact with the supply reel stand 19 and the take-up reel stand 28, and the supply reel stand 19 and the take-up reel stand 28 enter the brake holding state. It's preventing it from happening. This allows recording, playback, queue, review, and other modes during tape loading. During tape unloading, the tape loading motor 1 rotates clockwise in FIG. 5 to drive the tape loading mechanism. Here, the power of the tape loading motor 1 is transmitted to the pinion 7, the pinion 7 rotates clockwise in FIG. 5, and the rotation of the master gear 22 causes the sliding plate 27 to slide in the opposite direction to that during tape loading. Second
While the protrusion 26 and the sliding lever tip 25 are in the locked state, the solenoid 12 and the iron piece 9 are in contact with each other, so there is no need to energize the solenoid 12, but the sliding plate 27 slides and the second protrusion 26 and the sliding lever tip 25 are unlocked and the solenoid 1
In order to prevent the sliding lever 11 from sliding due to separation of the iron piece 9 from the iron piece 9, the solenoid 12 is energized as a brake release holding means immediately before the second protrusion 26 and the sliding lever tip 25 are unlocked. The brake 24 on the supply reel stand 19 and take-up reel stand 28 is released while the iron piece 9 is held in close contact with the iron piece 9. After tape unloading is completed, the energization of the solenoid 12 is stopped, and since the second protrusion 26 and the sliding lever tip 25 are unlocked, the tape loading motor 1 slides by rotating clockwise in FIG. 5. When the lever 11 slides, the solenoid 12 and the iron piece 9 are separated, and the brake 24 comes into contact with the supply reel stand 19 and the take-up reel stand 28 to hold the brake, and the tape loading motor 1
stops and enters stop or eject mode. When changing from stop mode to fast forward or rewind mode, tape loading motor 1 is connected to solenoid 1.
The solenoid 12 and the iron piece 9 rotate counterclockwise in FIG.
Even if they are in contact, the sliding plate 27 does not slide because it is not during tape loading as shown in FIG. 4, and the second protrusion 26 and the sliding lever tip 25 are not locked. For this purpose, the solenoid 12 is energized as a means for releasing and holding the brake.
By tightly holding the iron piece 9 in contact with the iron piece 9, malfunction can be prevented, and the brake 24 for the supply reel stand 19 and take-up reel stand 28 can be released to stop the supply reel stand 19 and the take-up reel stand 28, allowing an eject mode. In addition, when switching from fast forward or rewind mode to stop or eject mode, the energization to the solenoid 12 is stopped and the tape loading motor 1 rotates clockwise in FIG. 12 and the iron piece 9 are separated, and the brake 24 is brought into contact with the supply reel stand 19 and the take-up reel stand 28 to hold the brake, and the tape loading motor 1 is stopped and enters an eject mode. (F) Effects of the Invention According to the brake actuating device of the present invention, the brake release state is maintained mechanically or by a solenoid, and for example, the brake release state is maintained by the solenoid in modes such as fast forwarding and rewinding. By integrating the tape loading motor with the brake actuating device, it is possible to reduce the size without taking up much space.

[Brief explanation of drawings]

Fig. 1 is a plan view of the brake actuation device of the present invention in which the iron piece and the solenoid are separated, Fig. 2 A and B are a plan view and a side view, respectively, in which the solenoid and the iron piece are in contact with each other, and Fig. 3 The figure is a plan view of the main part when the reel stand is in the braking state by the brake actuating device of the present invention, and FIGS. FIG. Explanation of main drawing numbers, 1... Tape loading motor, 4... Worm gear, 7... Pinion, 8
...Rack, 9... Iron piece, 10... First protrusion,
11...Sliding lever, 12...Solenoid, 18
... Brake lever, 23 ... Brake actuation device, 24 ... Brake, 25 ... Sliding lever tip, 26 ... Second protrusion, 27 ... Sliding plate.

Claims (1)

[Scope of Claims] 1. A drive means driven by a tape loading motor 1 in a tape loading mechanism, a pinion 7 coupled to the drive means in a frictional relationship, a rack 8, an iron piece 9, and a protrusion 10.
A brake actuating device having a sliding lever 11 having a brake release state and a solenoid 12 holding the brake in a released state, the sliding lever 11 sliding as the tape loading motor 1 rotates during tape loading, The protrusion 10 is connected to the brake lever 18
By bringing the brake lever 1 into contact with
8 to maintain the brake release state by mechanically regulating the position of the sliding lever 11, or by energizing the solenoid 12 to release the iron piece 9.
A brake actuating device characterized in that the sliding lever 11 is slid by suctioning and the brake release state is maintained.