KR0117898Y1 - Idler control device for tape recorder - Google Patents

Abstract

The present invention relates to an idler control device for traveling the magnetic tape by selectively transmitting the rotational force transmitted by the capstan motor to the traveling system to the supply rail and the take-up rail, which is designed to allow the subchassis to rest on the main chassis. In this case, the idler is guided to the center position, and when the sub-chassis is seated in the main chassis, when the magnetic tape is driven, the idler is guided to the left and right positions relative to the center position so that the supply rail or take-up rail is selectively rotated. When the chassis is seated in the main chassis, the idler is not in contact with any part of the subchassis.

Description

Idler Control of Tape Recorder

1 is a plan view showing a traveling system of a tape recorder having an idler control device according to the prior art;

2 is a plan view showing a traveling system of a tape recorder having an idler control device according to the present invention, (A) shows the position of the idler during playback, and (B) shows the idler during unloading stop and ejection. Shows the location,

3 is a cross-sectional view along the line (-3) in FIG. 2,

4 is a plan view showing the operation lever for operating the eject lever.

* Explanation of symbols for main parts of the drawings

1: main chassis 2: capstan motor

8: idler gear 14: ring gear

100: idler lever 106: idler cam

110: spring 112: eject lever

114,116: pin 120,122: link

124: spring

The present invention relates to a traveling system of a magnetic recording and reproducing apparatus, and more particularly, a rotational force transmitted to a traveling system by a capstan motor is selectively transmitted to a supply rail and a take-up reel. An idler control device of a tape recorder for driving a tape.

In general, a magnetic recording and reproducing apparatus is capable of recording or reproducing a signal on a magnetic tape conveyed by a predetermined path, and such magnetic recording and reproducing apparatus is mounted on a drum having a head on a deck, a supply rail and a take-up rail. And a tape running system for transferring the prepared magnetic tape to a predetermined path, a tape loading system for bringing the magnetic tape into close contact with the drum side, and devices for driving the rail.

Therefore, the magnetic recording and reproducing apparatus of this type had to have a loading motor for driving the tape loading system and a capstan motor for driving the tape traveling system and the rail, respectively, so that the size of the product is increased.

However, in recent years, the size of the magnetic recording and reproducing apparatus is becoming smaller and smaller. In particular, efforts have been made to reduce the size of the magnetic recording and reproducing as much as possible, and to reduce the weight. Many products are known.

As part of this, the inventors inserted a tape cassette into a cassette holder equipped with a rotating drum to reduce the deck size as much as possible and to simplify the components as disclosed in Korean Patent Application No. 93-5016. Allow the tape to be loaded first, and then press and close the cassette holder to allow the magnetic tape to float secondly on the rotating drum, but to allow the rotating drum to be fully received into the tape cassette's interior space upon completion of the tape cassette loading operation. A magnetic recording and reproducing device that can be miniaturized has been devised. It uses a single capstan motor to transfer power to the odometer and the loading system to drive or load the magnetic tape, thus eliminating the need for a separate loading motor. It is to achieve the miniaturization of the deck.

On the other hand, the inventors of the invention idler control device suitable for the magnetic recording and reproducing apparatus in the Republic of Korea Patent Application No. 93-14174 bar, as shown in Figure 1, the mode control signal on one side of the main chassis (1) And a capstan motor 2 that rotates forward and backward, and is connected to the gear 2a of the capstan motor 2 by a lever 3 on a bracket (not shown) to rotate about the shaft 4a. The transmission gear 4 is geared and rotated left and right according to the rotation direction of the capstan motor 2 so that the rotational force of the capstan motor 2 can be selectively transmitted to the magnetic tape loading system or the traveling system.

That is, the magnetic tape traveling system is installed such that the gear 5 is rotated about the shaft 5a on the main chassis 1 so as to be geared to the transmission gear 4 transmitting the rotational force of the capstan motor 2. The pulley 5b formed on the gear 5 and the pulley 6a of the driven gear 6 are connected as the belt 7, and the idler 6 is connected to the driven gear 6 with an idler lever 8a. Gear 8 is geared to directly transmit the rotational force to each of the supply rails (10) installed in the service chassis not shown while the idler gear (8) is rotated left and right in accordance with the rotation direction of the capstan motor (2), The take-up rail 11 is configured to transmit rotational force indirectly through the auxiliary gears 12 and 13.

On the other hand, the magnetic tape loading system is geared with the transmission gear 4 to transmit the rotational force of the capstan motor 2 to the ring gear 14, which is a plurality of gears (not shown) installed on the main chassis 1 Is not achieved).

In addition, a cam gear 15 that is geared to the ring gear 14 and rotates about the shaft 15a is provided in the ring gear 14, and a cam groove 15b is formed on an upper surface of the cam gear 15. The cam lever 16 is installed on the upper side of the cam gear 15 so as to rotate about the shaft 16a, and the pin 16b protruding downward of the cam lever 16 is the cam groove 15b of the cam gear 15. Is fitted). An end of the eject lever 17 is fitted to the pin 16c formed at one end of the cam lever 16 so as to be installed in the horizontal direction.

As can be seen in FIG. 1, the ejection lever 17 is formed with a projection 17a, which is inserted into the recess 18a formed in the idler cam 18. As shown in FIG. The groove 18a is formed in the idler cam 18. The idler cam 18 is made of a thin plate, and the idler cap 18 is formed with a cam surface 18b to which the pin 8b of the idler lever 8a can contact.

The idler cam 18 is normally provided with elasticity by a spring 20 having one end fixed to the pin 19 so that the yaw 18a contacts the protrusion 17a, and the idler cam 18 has a spring 20. The engaging piece 21 which can fix the other end of the () is provided.

In the conventional traveling system configured as described above, when the ring gear 14 is rotated, the cam gear 15 is rotated, and the cam lever 16 and the eject lever 17 are moved left and right, thereby causing the idler cam 18 to idle. The idler gear 8 is connected to the supply rail 10 or the auxiliary gears 12 and 13 in accordance with the rotational direction of the capstan motor 2 by rotating the left and right sides of the take-up rail 11. Rotated.

Accordingly, the idler control device is positioned at the center position when the subs Chassis is seated in the upper chassis, and rotates the supply rail 10 or the take-up rail 11 by rotating the idler left and right when the tape is driven.

This invention is devised based on the idler control device as described above. The purpose of this invention is to guide the idler to rotate only within a predetermined position, so that when the upper chassis is seated in the main chassis, the parts of the idler and the upper chassis are removed. An idler control of a tape recorder is provided.

A feature of the idler control device of the tape recorder according to the present invention for achieving the above object is a driven gear that is forward and reverse rotation by receiving power from a drive source installed in the lower chassis and an upper part when the forward and reverse rotation of the driven gear is performed. An idler control apparatus for a take recorder, the idler being selectively geared to a supply rail and a take-up rail installed in a chassis and having an idler for rotating the supply rail and the take-up rail; When the upper chassis is seated in the lower chassis, the idler is guided so as not to contact the supply rail and the take-up rail, and the upper chassis is seated in the lower chassis. When the magnetic tape is driven, the idler is configured to guide the contactor to the supply rail or the take-up rail so that the supply rail or the take-up rail is selectively rotated.

According to the present invention, an idler control means includes an eject lever that moves horizontally in conjunction with a ring gear that is rotated when the upper chassis is seated, and an idler that pivots about a predetermined axis when the eject lever is horizontally moved so that the idler is connected to the supply rail. It guides not to touch the take-up rail and regulates the left and right rotational movement of the idler when the tape is driven after the upper chassis is seated so that the idler selectively contacts the supply rail and the take-up rail to rotate the rail. It is preferably composed of an idler cam in contact with one end of the.

Hereinafter, a preferred embodiment of the idler control device of the tape recorder according to the present invention will be described in detail with reference to the accompanying drawings.

(A) and (b) of FIG. 2 are plan views showing the traveling system of the tape recorder provided with the idler control device according to the present invention. In these drawings, the same reference numerals as in FIG. Detailed configuration of the description will be omitted and only the different parts will be described.

Referring to (a) and (b) of FIG. 2, the idler gear 8 is rotatably installed on the shaft 102 at one end of the idler lever 100, and the other end of the idler lever 100 is provided. The first rotation angle regulating portion for regulating the rotation angle θ ₁ of the idler gear 8 during the play, stop, fast forward (FF) and rewind (REW) of the tape, and the idler gear 8 of the ejector A second rotation angle regulating portion for regulating the rotation angle θ ₂ is formed. The first rotational angle regulating part is made of the first step 100a and the second stepping part 100b, and the second rotational angle regulating part is made of the first stepping step 100a and the third stepping step 100c. Accordingly, the idler lever 100 is rotated within the range of the rotation angle θ ₁ , or θ ₂ by the idler cam to be described later.

As shown in detail in FIG. 3, the lower side of the driven gear 6 is equipped with a pulley 6a, and these driven gears 6 and the pulley 6a are fixed to the main chassis 1 by the shaft 104. It becomes rotatable at).

A fixing ring 105 is installed at the end of the shaft 104 to prevent the driven gear 6 and the pulley 6a from being separated from the shaft 104.

The idler gear 8 is rotatably fixed by the shaft 102 at the end of the idler lever 100 to be engaged with the driven gear 6.

On the other hand, the idler cam 106 is installed on the shaft 108 fixed to the main chassis 1 to be rotated about the shaft 108 during the left and right movement of the eject lever 112 while receiving elasticity by the spring 110. have. Two pins 114 and 116 are provided at the end and the middle of the idler cam 106 as shown in FIG.

One end of the spring 110 is held by the locking piece 118 installed in the main chassis 1, and the other end thereof is held by the idler cam 106 so that the pin 116 is one of the eject levers 112. It is closely attached to the side.

As shown in (a) and (b) of FIG. 2, the surface of the eject lever 112 engaged with the pin 116 of the idler cam 106 is stepped, which is why the eject lever 112 is left. , When the right horizontal movement, the end of the idler cam 106 is to be rotated up and down about the shaft 108.

As shown in FIG. 4, the eject lever 112 may be rotated left and right by an interlocking motion by the links 120 and 122 and the spring 124 when the ring gear 114 is rotated. That is, the eject lever 112 is moved in the direction of the arrow A at the time of playing, rewinding, fast forwarding or stopping the tape, and the eject lever 112 is moved in the direction opposite to the arrow A at the time of ejection. In FIG. 4, the link 120 is rotated about the axis 128 by the pin 126 provided in the ring gear 14, so that one end of the link 122 (ie, the hinge 130) Apply rotational force to. Then, the link 122 rotates left and right about the shaft 132 to horizontally move the eject lever 112 coupled by the hinge 134 to the left and right.

The operation of the idler control device according to this invention configured as described above will be described.

2 (a) and 4 (d) show the states for playing, stopping or rewinding the tape (REW), fast-forwarding (FF), etc. When ejecting in such a state, the ring gear 14 It is rotated in the direction of arrow B by the loading system which is not shown in figure.

When the ring gear 14 is rotated in the direction of the arrow B, the pin 126 in the ring gear 14 pushes one end of the link 120. At this time, the link 120 is rotated counterclockwise about the axis (128).

When the link 120 rotates counterclockwise, the hinge 130 fixed to the link 120 pushes another link 122, and the link 122 clockwise about the axis 132. By rotating to the eject lever 122 fixed to the hinge 134 is moved in the direction opposite to the arrow (A).

When the eject lever 112 is moved to the left in (a) of FIG. 2, the pin 116 of the idler cam 106 engages with the stepped surface of the eject lever 112, thereby causing the idler cam 106 to be moved to the shaft 108. FIG. It rotates counterclockwise around () and is maintained as (b) of FIG.

Therefore, during ejection, as shown in (b) of FIG. 2, since the idler lever 100 can be rotated only within the rotation angle θ ₂ , the idler gear 8 is supplied to the supply rail 10 or the auxiliary gear. It is not caught at all with (12).

On the other hand, when the tape is to be played back, rewinded, fast forwarded, etc. in the ejected state, the ring gear 14 shown in FIG. Is rotated in the direction.

When the ring gear 14 is rotated counterclockwise, the link 120 is rotated clockwise by the spring 124. Accordingly, the link 122 is rotated counterclockwise, so that the eject lever 112 has an arrow ( It moves horizontally in A) direction.

When the eject lever 112 is horizontally moved in the direction of the arrow A, the idler cam 106 is rotated clockwise about the axis 108 and maintained as shown in FIG. Thus, during play, stop, fast forward or rewind of the tape, the idler gear 8 operates under the driving force from the capstan 2 to take up via the supply rail 10 or the auxiliary gears 12 and 13. The rail 11 can be rotated. In this case, the idler cam 106 is rotated clockwise about the axis 108 and is maintained as shown in FIG.

Therefore, the idler gear 8 is directly engaged with the supply rail 10 or engaged with the auxiliary gear 12 since the idler lever 10 can be rotated within the rotation angle θ ₁ during regeneration, fast forward or rewind. Therefore, the driving force is transmitted to the take-up rail 11 through the auxiliary gear 13.

As described above, according to the idler control apparatus of the tape recorder according to the present invention, when the subchassis are seated on the main chassis, the idlers are placed at the center position so that the components and the idlers of the main chassis do not overlap, It is effective to precisely regulate the left and right rotation position of idler.

Claims (2)

The driven and take-up rails are selectively fitted to the driven and take-up rails installed in the upper chassis when the forward and reverse rotations of the driven gears are driven by power from a drive source installed in the lower chassis. An idler control apparatus for a take recorder having an idler for rotating the rotation; When the upper chassis is seated in the lower chassis, the idler is guided so as not to contact the supply rail and the take-up rail, and the upper chassis is seated in the lower chassis. And an idler control means for guiding the idler in contact with the supply rail or the take-up rail when the magnetic tape is driven, so that the supply rail or the take-up rail is selectively rotated. The method of claim 1, wherein the idler control means, An ejector lever horizontally moved in conjunction with a ring gear rotated when the upper chassis is seated, and elastically pivoted about a predetermined axis when the ejector lever is horizontally moved to guide the idler not to contact the supply rail and the take-up rail When the tape is driven after the upper chassis is seated, an idler cam is contacted with one end of an idler lever so that the idler is selectively contacted with the supply rail and the take-up rail to rotate the rail. Idler control of configured tape recorder.