JP2559016B2 - Tape recorder - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a tape recorder that enables simplification.

[0002]

2. Description of the Related Art In recent years, there have been great demands for miniaturization of tape recorders. In order to realize this miniaturization, a magnetic head, a pinch roller, etc. are attached to the holder means for holding the tape cassette and rotating and reciprocating to the first position for running the magnetic tape and the second position for attaching and detaching the tape cassette. A structured method is proposed.

In such a conventional method, a pinch roller arm pivotally supporting a pinch roller and the pinch roller arm are controlled so that the pinch roller is separated from the capstan and press-contacted with each other so as to be in a stopped state and a tape running state. The control means for controlling is configured so that the holder means engages or engages only in the first position and performs the operation, and the second position and the first position when the tape cassette is attached and detached in the stopped state.
In the process of reciprocating from the position 2 to the second position, the engagement and disengagement were made. Therefore, a spring or the like is used to separate the pinch roller from the capstan in the process of reciprocating from the second position to the second position when the tape cassette is attached and detached in the stopped state. .

[0004]

However, the conventional tape recorder as described above has a large number of parts due to the use of springs and the like, and also when the tape cassette is attached and detached in a stopped state due to the load of the magnetic head lead wires and the like. In the process of reciprocating from the second position and the first position to the second position, the pinch roller and the capstan come into contact with each other and the magnetic tape is damaged.

In view of the above conventional problems, the present invention has been made for the purpose of providing a tape recorder which is small in size, has a reduced number of parts, and is safe for magnetic tapes. .

[0006]

In order to solve the above-mentioned problems, a tape recorder according to the present invention has a first position for holding a tape cassette and running a magnetic tape , and the tape.
It is common to rotate back and forth to the second position to attach / detach the cassette.
, A magnetic head, a pin supported by a pinch roller arm
A holder means having a chiller and an abbreviation for the magnetic tape
It reciprocates in the running direction and the pinch roller is
Standstill that is kept separate from the table and the table that is pressure-contact controlled.
Controls the pinch roller arm so that it is in a running state
And a control member having an engaging portion for
When the holder means is moved back and forth between the first and second positions.
The pinch roller is not pressed against the capstan
The engaging portion is formed in a curved shape so as to maintain the closed state .

[0007]

According to the present invention, the pinch rollers are separated from each other without pressing the capstan when the holder means is rotated and reciprocated between the first and second positions when the tape cassette is attached and detached in the stopped state. Therefore, the size can be reduced, the number of parts can be reduced, and the magnetic tape is safe.

[0008]

Embodiments of the tape recorder of the present invention will be described in detail below with reference to FIGS.

1 to 3 show the external appearance of the main part, FIG. 1 is a plan view, FIG. 2 is a rear view showing the state as seen from the rear side of the tape cassette, and FIG. 3 is a rear view. 4 to 7 are side views seen from the side of the tape cassette showing a magnetic tape running state and a detached state of the tape cassette, FIG. 8 is a schematic plan view showing a magnetic tape running operation, and FIGS. 9 to 14 are magnetic tape running operations. FIG.

In the figure, reference numeral 1 is an upper substrate, and a magnetic tape 3 of a tape cassette 2 is provided with a pair of reel hubs 2a and 2b.
A storage portion 2c that stores a winding portion (not shown) wound around
And is formed in a state in which it is thicker than the accommodating portion 2c having an opening (not shown) for inserting the magnetic head 4, the first and second pinch rollers 5, 6 of the tape cassette 2. A notch 1a is formed so as to escape the insertion portion 2d. Reference numeral 7 denotes a lower substrate, which is formed along the insertion portion 2d and is fixed to the upper substrate 1 with a pillar (not shown) and a plurality of screws 8 in a state of having a gap. Reference numerals 9 and 10 denote first and second holder support bases, which are fixed to the upper substrate 1 and rotatably support the holder body 11 by shaft portions 9a and 10a.

The holder body 11 has first and second holders 14 and 15 which are fixed to both ends thereof and accommodate the tape cassette 2, and the magnetic head 4 is fixed thereto. The first and second pinch rollers 5 and 6 are rotatable about the pair of shafts 18 and 19 of the holder body 11 and the shaft 2 of the first and second pinch roller arms 20 and 21.
2 and 23 are rotatably provided. Reference numerals 27 and 28 denote first and second pinch roller springs, which bias the first pinch roller arm clockwise in FIG. The second pinch roller spring 28 biases the second pinch roller arm 21 counterclockwise in FIG.

Further, the holder body 11 is biased clockwise by a spring 35 in FIG. 4, and the positioning portion 14a of the first holder 14 and the positioning portion (not shown) of the second holder 15 are moved to the upper side. The tape cassette 2 as shown in FIG. 4 and FIG. 6 which is in contact with the substrate 1 holds the magnetic tape 3 mounted at the running position. Reference numerals 36 and 37 denote first and second capstans, which integrally have first and second flywheels 38 and 39.

Reference numeral 58 denotes a motor device, which is constructed so that an electric control circuit means (not shown) rotationally drives the magnet rotor 63 clockwise and counterclockwise. These configurations are well-known methods and will not be described in detail.

Reference numeral 72 denotes a relay pulley, which is the shaft 7 of the upper substrate 1.
3 is rotatably provided with the metal 74, and has a large diameter portion 72.
The rotation of the magnet rotor 63 is transmitted by a motor belt 75 suspended from a and the pulley portion of the magnet rotor 63 of the motor device 58. A main pulley 76 is rotatably provided on the shaft 77 of the upper board 1 and has a drive gear 76a. The main pulley 76, the first flywheel 38, the second
The flywheel 39 is configured to transmit the rotation of the relay pulley 72 from the small diameter portion 72b via a belt 78.

Reference numeral 79 is a guide pulley, which is rotatably provided on the shaft 80 of the lower substrate 7, and regulates the position of the belt 78 as shown in FIG.

Reference numeral 81 is a first relay gear, which is rotatably provided on the shaft 82 of the upper substrate 1 and rotatably provided on the shaft 83 of the upper substrate 1 by the rotation of the drive gear 76a of the main pulley 76. The drive gear 76a and the large diameter gear 84a of the second relay gear 84 are meshed with each other so as to be transmitted to the second relay gear 84.

Reference numeral 85 is a cam gear, which is the shaft 86 of the upper substrate 1.
Is rotatably provided, is configured to mesh with the small-diameter gear 84b of the second relay gear 84, and is provided with first, second, and third toothless portions 85a, 85b, 85c, and has a groove shape. It integrally has a first cam 87 formed on the.

Reference numeral 129 is a first solenoid, and 132 is a first solenoid arm made of a resin material. The first solenoid arm is rotatably provided on the shaft 133 of the upper substrate 1, and is rotated by a spring 134 in FIGS. The suction piece 131 is urged in the clockwise direction and rotatably supports the suction piece 131 on the shaft portion 132b of the one end 132a, and the shaft portion 132 of the other end 132c has the first, second, and third portions formed on the cam gear 85. Locking part 85
It is configured to abut and lock g, 85h, and 85i.

A switching lever 135 is provided on the shaft 133 and the first solenoid arm 132 as shown in FIG.
The cam shaft 135a at one end is engaged with the first cam 87 formed in a groove shape, and the lever shaft 135b at the other end is slidable on the shaft 136 of the lower substrate 7. It is engaged with a control rod 137 provided.

Reference numerals 138 and 139 denote first and second pinch roller control shafts, which are fixed to the control rod 137 and are connected to the control portions 20b and 21b formed on the first and second pinch roller arms 20 and 21, respectively. The first and second pinch rollers 5 and 6 are brought into contact with each other, and the first and second capstans 36,
6 is controlled so as to be pressed against and separated from the holder 37, and the holder main body is placed at a position where the magnetic tape 3 can run and a position where the tape cassette 2 can be attached to and detached from the first and second holders 14 and 15 shown in FIG. When the 11 is rotated, the first and second pinch roller arms 20 and 21 are prevented from coming into contact with the inner wall portion 11b of the holder body 11, and the first and second pinch rollers 5 and 5 are provided. The first and second capstans 36 and 37 are not pressed against the first and second capstans 36 and 37.
The control unit 20b of the second pinch roller arms 20 and 21,
Curved portions 138a and 139b that control the valve 21b are formed.

The operation of the tape recorder configured as described above will be described below.

First, the mounting operation of the tape cassette will be described. The holder body 11 and the first and second cassette holders 14 and 15 are rotated counterclockwise against the spring 35 as shown in FIGS.
Are stored in the first and second holders 14 and 15.
At this time, the magnetic head 4, the first and second pinch rollers 5 and 6 supported by the holder body 11 are inserted into the opening (not shown) of the tape cassette 2, and the first and the first first and second pinch rollers 5 and 6 are inserted. The second erasing heads 29 and 30 face each other. In this state, the holder body 11 and the first and second holders 1
When the tapes 4 and 15 are rotated clockwise from the states of FIGS. 5 and 7 to the states of FIGS. 4 and 6, the tape cassette 2 is mounted at the tape running position.

When the holder main body 11 and the first and second holders 14 and 15 are rotated clockwise, the first and second holders 11 and 14 are moved.
The second pinch roller arms 20 and 21 are connected to the control unit 2 described above.
0b and 21b are the first and second pinch roller control shafts 1
The first and second pinch roller arms 20 and 21 are controlled by the curved portions 138a and 139a of the holders 38 and 139 so as not to contact the inner wall portion 11b of the holder body 11, and 2 pinch rollers 5, 6
Are controlled so as not to be in pressure contact with the first and second capstans 36 and 37.

When the tape cassette 2 is set in the mounted state, the first and second pinch roller control shafts 138, 1
39, the first and second pinch roller arms 20,
21 by controlling the control units 20b and 21b.
The pinch rollers 5 and 6 of the first and second capstans 3
It is in a stopped state of separating from 6, 37. The detaching operation of the tape cassette 2 is carried out in reverse to the attaching operation, and thus the detailed description thereof will be omitted.

Next, the normal rotation reproduction operation from the stopped state will be described. When the first solenoid 129 is energized from the stopped state shown in FIGS. 8, 9 and 12, the cam gear 85 is brought into the states shown in FIGS. 12 and 10.

The cam gear 85 is changed from the state shown in FIG. 9 to the state shown in FIG.
When the first cam 87 rotates the switching lever 135 in the counterclockwise direction as shown in FIG. 10, the control rod 137 moves from the state shown in FIGS. 9 and 12 in the arrow A direction. It is moved to the state shown in FIGS.

When the control rod 137 is moved in this way, the control portion 20b of the first pinch roller arm 20 is controlled by the pinch roller control shaft 138, and the first pinch roller spring 27 is biased. Is rotated clockwise by. Therefore, the first pinch roller 5 is brought into pressure contact with the first capstan 36 rotated counterclockwise by the magnet rotor 63 of the motor device 58, and the magnetic tape 3 is run in the direction of arrow A to perform the normal reproduction operation. It becomes a state.

At this time, the second pinch roller 6 is moved to the second position.
The control portion 21b of the second pinch roller arm 21 is controlled by the pinch roller control shaft 139 of (1) and is separated from the second capstan 37.

Next, the reverse reproduction operation from the normal reproduction state will be described. When the first solenoid 129 is energized from the normal rotation reproducing operation state of FIGS. 10 and 13, the cam gear 85 is brought into the states of FIGS. 11 and 14 as in the normal rotation reproducing operation.

When the cam gear 85 is thus rotated, the switching lever 135 and the control rod 137 are moved from the state shown in FIGS. 10 and 13 to the state shown in FIGS. 11 and 14 in the clockwise direction and the arrow B direction, respectively. 9, moved through the stop position of FIG.

When the control rod 137 is moved in this manner, the control portion 21b of the second pinch roller arm 21 is controlled by the pinch roller control shaft 139,
Further, it is rotated counterclockwise by the urging force of the second pinch roller spring 28. Therefore, the second pinch roller 6
Is brought into pressure contact with the second capstan 37 rotated clockwise by the magnet rotor 63 of the motor device 58 to run the magnetic tape 3 in the direction of arrow B, and the reverse reproduction operation state is set.

At this time, the control unit 20b of the first pinch roller arm 20 controls the first pinch roller 5 by the first pinch roller control shaft 138.
Is separated from the capstan 36.

Next, the stop operation from the reverse reproduction state will be described. When the first solenoid 129 is energized from the reverse reproduction state of FIGS. 11 and 14, the cam gear 85 is rotated to the state of FIG. 9 as in the normal rotation reproduction operation and the reverse reproduction operation.

When the cam gear 85 rotates as described above, the switching lever 135 and the control rod 137 are moved from the state of FIGS. 11 and 14 to the states of FIGS. 9 and 12 in the counterclockwise direction and the arrow A direction, respectively. It

When the control rod 137 is moved in this way, the control portion 21b of the second pinch roller arm 21 is controlled by the pinch roller control shaft 139.
By rotating clockwise against the second pinch roller spring 28, the second pinch roller 7 is separated from the second capstan 37 and is in a stopped state.

A plurality of electric operation switches and a control circuit are used for the normal rotation and reverse reproduction operations, and the stop operation of these operations, and the like, by the motor device 58 and the first solenoid 129.
Etc. are controlled. These are well known and will not be described in detail.

[0037]

As described above, according to the present invention, when the tape cassette is attached and detached in the stopped state, the holder means is provided with the first and second holder means.
Since the pinch roller can be maintained in a separated state where it does not come into pressure contact with the capstan when reciprocating the position of
In addition to miniaturization, it reduces the number of parts and is safe for magnetic tape.

[Brief description of drawings]

FIG. 1 is a plan view showing an appearance of a main part of a tape recorder according to an embodiment of the present invention.

FIG. 2 is a rear view showing the tape cassette as seen from the back side.

[Figure 3] Rear view of the same

FIG. 4 is a side view showing the action of the cassette pressing spring with the tape cassette mounted in the running position.

FIG. 5 is a side view showing a state in which the tape cassette is in a detached position.

FIG. 6 is a side view showing the operation of the pinch roller control shaft with the tape cassette mounted in the running position.

FIG. 7 is a side view showing a state in which the tape cassette is in a release position.

FIG. 8 is a schematic plan view mainly showing a state in which a cam gear is controlled by a first solenoid and showing a stopped state.

FIG. 9 is a schematic plan view mainly showing a state of rotating parts such as gears and showing a stopped state.

FIG. 10 is a schematic plan view showing a normal rotation reproduction or recording state.

FIG. 11 is a schematic plan view showing the reverse reproduction or recording state.

FIG. 12 is a schematic plan view mainly showing an operating state of a pinch roller, a magnetic head, an erasing head and the like and showing a stopped state.

FIG. 13 is a schematic plan view showing a normal rotation reproduction state.

FIG. 14 is a partial plan view showing a reverse reproduction state.

[Explanation of symbols]

 2 tape cassette 3 magnetic tape 4 magnetic head 5 first pinch roller 6 second pinch roller 9 first holder support base 10 second holder support base 11 holder body 14 first holder 15 second holder 20th 1st pinch roller arm 21 2nd pinch roller arm 36 1st capstan 37 2nd capstan 85 Cam gear 137 Control rod 138 1st pinch roller control shaft 139 2nd pinch roller control shaft 138a, 139a Curved part

Claims (1)

(57) [Claims] 1. A holding the tape cassette, the magnetic tape
Attaching and detaching the first position for running and the tape cassette
And the magnetic head
With pinch roller pivotally supported on the pinch roller arm
The holder means and the magnetic tape are reciprocated substantially in the traveling direction, and the pinch is moved.
In the stopped state where the roller is kept separated from the capstan
Pinch so that the tape running state is controlled under pressure and pressure.
And a control member having an engaging portion for controlling the roller arm.
In the stopped state, the holder means is rotated between the first and second positions.
When moving back and forth, the pinch roller presses the capstan.
Do not touch the above-mentioned engaging parts so as to maintain the separated state.
A tape recorder characterized by having a curved shape .