KR970003691Y1 - Pinch roller driving device - Google Patents

Abstract

None.

Description

Pinch Roller Drive Inverter

1 is a view showing the back of the main substrate of the present invention.

2 is a diagram schematically showing a relationship between a selector gear and a reduction gear by operation of a manual program.

3 is a view showing the operation of the pinch arm spring moved in the reverse direction or the forward direction by the reverse / forward switching plate.

FIG. 4 is an enlarged view of the main part of FIG.

5 is a diagram showing the relationship between the pressing plate and the ejector arm.

* Explanation of symbols for main parts of the drawings

1: base plate 2, 3, 4, 5: reduction gear

6: dedector gear 7: take up gear

9: selector gear 9a: protrusion

10: forward / reverse switching version 10a: flat ball part

10b: guide hole 10c: long hole

10d: protrusion 11: forward driving tape winding gear

12: Reverse driving tape winding gear 13: Forward driving capstan

13 ': Forward driving wheel 13a: Forward pinch roller

13b: forward driving pinch arm 14: reverse driving capstan

14 ': reverse driving wheel 14a: reverse driving pinch roller

14b: reverse driving pinch arm 15: pinch arm link

15a: locking projection 15b: locking portion

16: pinch arm spring 17: head

18: pinch arm spring guide portion 19: manual program arm

20: lock arm 21: first spring

22: head base 23: eject arm lever

24: 2nd elastic spring 25: Take-up arm

27: connecting plate 27a: locking portion

27b: latch 28: main idle pulley

30: main belt A, B: shaft

The present invention relates to a drive converter of a pinch roller suitable for a pinch roller switching contact of a deck apparatus employing the auto reverse common sense. In particular, it relates to driving and controlling the operation of a pinch roller using a pinch arm spring.

In general, tape recorders and tape players use a single capstan method to manually record and play from the opposite side of the head when trying to use the opposite side of the cassette tape (usually the front and back of the cassette tape). There was a method of switching to and a method of automatically inverting, recording, and playing back with a double capstan method (hereinafter, referred to as an auto reverse method).

In this manner, the player of the tape recorder has a constant speed at a constant speed during recording and playback, and a method of ensuring compatibility between the devices has been performed. For example, the speed of the compact cassette tape is approximately 4.76 cm / sec.

As described above, capstans and pinch rollers were generally used in order to keep the tape speed constant.

That is, by inserting a tape (hereinafter referred to as cassette tape) between the capstan and the pinch roller, and pushing the pinch roller toward the capstan, it is possible to faithfully transmit the rotational force of the pinch roller to the capstan, A device has been manufactured that can faithfully read the recorded or recorded signal by the head.

In general, the autoreverse tape recorder or tape player has two pinch rollers because the tape driving direction is reversed by the double capstan method, and it is necessary to automatically switch the pinch roller and the head at the same time. Various apparatuses have been conceived since the pressure switching required for the pressure welding of the rollers is also required.

Further, when the cassette tape is detached from the tape player, i.e., when the head and the pinch roller need to be inserted and removed from the inside of the cassette tape, for example, single to double (for example, double capstan). ), Since the two pinch rollers are always pushed toward the capstan by a spring (not shown), the pressure applied to the tape doubles and becomes heavy, which causes a lot of influence on the whole apparatus.

In addition, there are two methods for applying pressure to the pinch roller.

There is a method of applying pressure to the pinch roller when the head is moved forward, or always pressing the pinch roller to release the pinch roller when the head is retracted.However, the pressure is applied to the pinch roller at any time, so either way Since the pressure is required twice, the load is heavy, causing tape ejection and other various problems.

Therefore, the present invention improves the above-mentioned problems, and its purpose is to pinch roller assay pressing device of any one of the two pinch rollers by the pinch arm spring installed to move left and right on the pinch arm link. Only by applying pressure to the tape to remove the extra force acting on the tape to facilitate the smooth rotational movement, and by reducing the number of parts it is possible to produce a low-cost product by simplifying the manufacturing process.

The present invention will be conceived in view of the above problems, the base plate of the deck apparatus adopting the autoreverse method, the pinch roller drive change device suitable for the pinch roller switching contact provided on the base plate, and the drive motor Reduction gear group acting by driving force, detector gear acting by receiving power of the reduction gear, selector gear meshing with the detector gear, reverse driving flywheel and reverse driving lip driven by power of the motor. A pinch roller having a stun, a forward / reverse switching plate for pressing the pinch roller, a pinch arm link operated by the operation of the forward / changing plate, and a tape recorder capable of reciprocating or recording reproduction on a magnetic tape. Drive conversion of pinch roller with head base for mounting the odd head part In the apparatus, a head base, an F / R switching plate, and a pressing plate are provided on the base plate, and the F / R switching plate is provided with a protruding piece at the head end, and at the same time as the selector lever side. A guide hole for guiding the operation of the protrusion formed integrally with the gear, second elastic means provided at a predetermined position of the F / R switching plate, and a protruding piece formed at the tip of the F / R switching plate and being horizontal A reciprocating pinch arm link, the pinch arm link forms a catch at one end and at the same time forms a catch at a predetermined position, and a pinch arm spring engaged with the catch, and the head at the top of the pressing plate. A base is installed, and a locking piece for installing the eject arm lever at the bottom and a locking hole for installing the first elastic means are protruded.

EXAMPLE

Hereinafter, the driving converter of the present invention pinch roller with reference to the accompanying drawings 1 to 5 as follows.

FIG. 1 is a view showing the back surface of the main substrate, and shows the operation of the pinch arm spring which is moved in the reverse direction or the forward direction by the switching plate of FIGS. 2 to 3 degrees reverse / forward.

1 is a base plate for constituting the entire apparatus, and reduction gear groups 2, 3, 4, and 5 are provided on the rear surface of the base plate 1.

The reduction gear groups 2, 3, 4, and 5 decelerate the rotational speed of the motor 29 to the required amount and at the same time connect the other gears.

6 is a detector gear, which is operated by the driving of the reduction gear 3 and detects the end of the tape.

7 is a take-up gear, which is operated by driving the reduction gear 4 and switches the running direction of the reel-to-gear 9 to be switched.

9 is a selector gear for switching the forward or reverse direction by operating the forward / reverse switchboard.

Reference numeral 11 denotes a forward traveling tape winding gear (hereinafter referred to as a reverse traveling reel gear) which is engaged with the reduction gear 5 to drive.

12 is a reverse traveling tape winding gear (hereinafter referred to as a reverse traveling reel gear) that operates by the take up gear 7 operation.

13 is a forward travel capstan, 13 'is a forward travel wheel, 13a is a forward travel pinch roller, and 13b is a forward travel pinch arm for allowing only the pinch roller 13a to rotate itself.

14 is a reverse drive capstan, 14 'is a reverse drive wheel, 14a is a reverse pinch roller, and 14b is a reverse drive pinch arm to allow only the pinch roller 14a to rotate itself.

15 is a pinch arm link that moves the pinch arm spring 16 or shifts the head 17 up and down by forward travel and reverse travel.

18 is a pinch arm spring guide portion, which allows the pinch arm spring link 16 to move in position.

19 is a manual program arm which detects by operating the selector gear lock arm 20 manually.

21 is a first spring for retracting the head base 22.

23 is an eject arm lever that retracts or advances the head base 22.

24 is a second elastic spring for operating the take up arm 25.

2 to 5 are views for explaining the operation of the forward / reverse switching plate and the pinch arm.

The selector gear 9 which meshes with the reduction gear 3 is provided with a projection 9a, which is a forward / reverse switching plate (hereinafter referred to as an F / R switching plate) 10 It is inserted into the guide hole 10b formed in the predetermined position of.

The F / R switching plate 10 is formed in a roughly shaped shape, and a long hole 10c is formed on the head 17 side to freely reciprocate from the shaft A by the forward traveling pinch roller. (10c) The protruding piece 10d is formed in the upper right side.

In addition, a flat portion 10a constituting a flat surface at a predetermined position of the F / R switching plate 10, for example, a position inserted into the guide groove 1a formed in the base plate 1, is provided on the base plate. Inserted into the formed guide groove (1a) is installed to be movable to the left and right.

In addition, a second spring 24 for operating the take arm 25 is provided at a predetermined position of the flat portion 10a integrally formed with the F / R switching plate 10.

The protruding piece 10d is fitted with a locking portion 15b formed at one end of the pinch arm link 15 having the locking projection 15a formed at a predetermined position.

On the engaging projection 15a formed on the pinch arm link 15 A pinch arm spring 16 is provided. As shown, the central portion of the spring 16 is formed with a recessed groove (16a).

27 is a connecting plate connected to the head base 22 to connect the head 17 with the forward and retracting operations.

On the lower side of the connecting plate 27, for example, a latching portion 27a is formed on the side where the eject push button is installed to engage the eject arm lever 23 for advancing and retracting the head base plate 22. In addition, the latch 27b for installing the first elastic member 21 for applying an elastic force to the eject arm lever 23 is integrally formed.

Reference numeral 30 in the code represents the main belt.

EMBODIMENT OF THE INVENTION Hereinafter, based on the Example shown in drawing, operation and effect are demonstrated as follows.

Inserting a tape (not shown) and supplying power, the motor 29 operates, and the reduction gear groups 2, 3, 4, and 5 in turn are operated by the operation of the motor. Rotate

As described above, in accordance with the rotation of the reduction gear group, the rotation of the reduction gear 4 meshed with each other is transmitted to the take up gear 7, and then the take up gear having received the rotational force from the reduction gear 4 ( Since the 7 is attached to the take-up arm 25, the take-up gear 7 and the forward driving reel gear 11 (hereinafter, forward traveling tape winding) are carried out at the time of forward travel as the take-up arm 25 moves. Gear), and the take-up gear 7 and the leadership gear 5 are engaged at the time of reverse travel, and then the reduction gear 5 is a reverse travel reel gear (hereinafter referred to as a reverse travel tape winding gear). (12) and is engaged by engaging this.

The operation of the forward and reverse will be described with reference to FIGS. 2 to 5.

As the motor 29 rotates, the idle pulley 28, which is connected to the main belt 30, and the forward driving wheel 13 ′, and the reverse driving wheel 14 ′ interlock with each other in turn, and artificially rotate the F / R switchboard. When the manual program arm 19 installed at (10) is pressed, the manual program arm 19 is pressed against the axis A, i.e., leftward in the direction of the arrow, and the tip of the selector gear lock arm 20 is pressed. At the same time, the selector gear lock arm 20 rotates right (arrow direction) about the support shaft B with elasticity (see FIG. 2).

Subsequently, the projection part 9a formed integrally therewith is rotated by the rotation of the selector gear 9 provided with the cam part, so that the F / R switching plate 10 moves in the direction of the arrow. For example, the detector gear 6 and the selector gear 9 rotate simultaneously, and at the same time, the guide hole in which the protrusion 9a provided in the selector gear 9 is formed in the F / R switching plate 10 is provided. By rotating along 10b, the F / R switching plate 10 moves horizontally. At the same time, the pinch arm spring 16 provided in the pinch arm link 15 is slid at the same time as the pinch arm link 15 engaged with the protruding piece 10d formed on the upper portion of the F / R switching plate 10 moves at the same time. ) Move together. At this time, when the pinch arm spring 16 is separated from the reverse pinch roller 14a and presses the central axis a of the forward pinch roller 13a, the central axis a moves toward the forward driving capstan 13. The tape is driven at constant speed as it is pushed out.

At this time, since the other end of the pinch arm spring 16 of the traveling shaft is separated from the central axis of the reverse pinch roller 14a, the reverse pinch roller 14a is not pressed.

In reverse driving, it operates in the opposite direction to the forward driving.

For example, the detection lock of the reel stop is rotated clockwise by the selector gear 9 by the operation of the manual program 19, for example, as the F / R switch plate 10 slides in the opposite direction. The reverse travel tape winding gear 12 is driven by operating the take-up arm 25, and one end of the pinch arm spring 16 connected to the F / R switching plate 10 is connected to the reverse center shaft b. ), The reverse traveling pinch roller 13a is pushed toward the reverse traveling capstan 14 to reverse.

As described above, when inserting the cassette tape from the tape player, the pressure applied to the tape was minimized by removing the spring which was always exerting a force toward the forward and reverse as in the prior art. For example, a pinch arm spring is installed to move the pinch arm link from side to side with a pinch roller associating device, thereby applying pressure to only one of the two pinch rollers to eliminate the extra force acting on the tape. It helps to smoothly rotate the tape, and reduces the number of parts, thereby simplifying the manufacturing process and producing inexpensive products.

Claims (1)

The base plate of the deck apparatus which adopts the autoreverse method, the drive conversion device of the pinch roller suitable for the pinch roller switching contact provided on this base plate, the reduction gear group which acts by the drive force of a drive motor, and this reduction gear A detector gear that acts upon receiving power from a power source, a selector gear that meshes with the detector gear, a reverse driving flywheel and a reverse driving lipstone driven by the power of the motor, and a forward / forcing contact to the pinch roller. A pinch roller with a reverse switch, a pinch arm link having a pinch arm link actuated by the operation of the forward / converter, and a head base for mounting a tape record head portion capable of reciprocating or recording reproduction on a magnetic tape. In the drive conversion device of the head plate on the base plate (1) The tooth 22, the F / R switching plate 10, and the connecting plate 27 are installed, and the F / R switching plate 10 is provided with a protruding piece 10d at the tip of the head 17 side. At the same time, a guide hole (10b) for guiding the operation of the projection (9a) formed integrally with the selector gear (9) on the eject arm lever 23 side, and formed integrally with the F / R switching plate (10) Pinch that is horizontally reciprocated by being inserted into the second elastic means for operating the take arm 25 at a predetermined position of the flat portion 10a and the protrusion 10d formed at the tip of the F / R switching plate 10. The arm link 15 and the pinch arm link 15 form a catching portion 15b at one end, and at the same time form a catching portion 15b at a predetermined position, and hang on the catching protrusion 15a. The pinch arm spring 16 to be fitted, the head base 22 is installed at the upper end of the connecting plate 27, the engaging portion 27a for installing the eject arm lever 23 at the lower end, and the head Base A drive conversion device for a pinch roller, characterized in that the engaging hole (27b) for protruding the first elastic means for advancing or retracting (22) protruding.