JPS6316883B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a swinging member driving device for selectively swinging a swinging member in one direction or the other direction.

Conventionally, when switching drive between a pair of reel shafts in a tape recorder, especially a small cassette tape recorder, using a remote control device, the rotational driving force from the motor is transferred to either of the pair of reel shafts. Since a plunger/solenoid driving means was used as a switching mechanism to selectively move a moving gear between a pair of reel shafts for transmitting data to one side or the other, it consumed a lot of power. When the battery is operated, it has the disadvantage that it is uneconomical because the life of the battery is shortened.

Conventionally, for example, when making a small cassette tape recorder capable of recording not only in the forward direction but also in the reverse direction, a compact drive switching mechanism for switching the reel shaft movement suitable for the small cassette tape recorder has been developed. There is a need for new development.

This invention was made based on the above circumstances,
The purpose of this is to help make the drive switching mechanism for switching reel drives more compact in small cassette tape recorders, and to make the drive switching mechanism a drive switching mechanism for remote control devices with low power consumption. An object of the present invention is to provide a suitable swinging member driving device.

An embodiment of the present invention will be described below with reference to the drawings.

First, referring to FIG. 1, a tape recorder 20 according to the present invention includes a pair of rotatable first reel shafts 22 and a second reel shaft 24, and one capstan provided intermediately behind these. It has 26. The capstan 26 is selectively rotated in the forward direction indicated by arrow F or the reverse direction indicated by arrow R by a drive motor (not shown). Furthermore, rubber tires 28 and 30 are coaxially mounted on each of the first and second reel shafts 22 and 24, respectively. Further, a pulley 32 is mounted coaxially with the capstan 26. In addition, two recording/playback heads 3 are located behind the capstan 26 (lower in the figure).
Magnetic head support stand 38 equipped with 4, 36
and a pinch roller support base 42 equipped with a pinch roller 40 are provided, and the pinch roller support base 42 is always pressed against the magnetic head support base 38 by a coil spring 44. The left and right ends of the magnetic head support 38 and the center of the pinch roller support 42 are provided with linear guide holes 46 and 4 extending in the front-rear direction (vertical direction in the figure), respectively.
8, 50, 52 are formed, and fixing pins 54, 56, 58, 60 on the chassis (not shown) are engaged with these guide holes 46, 48, 50, 52, respectively. And these guide holes 4
6, 48, 50, and 52, the magnetic head support 38 and the pinch roller support 42 are integrally movable in the front and back direction. pinch roller 40
is in rolling contact with the capstan 26 when the pinch roller support base 42 moves forward (upward in the figure),
The recording/playback head 36 records on the first track of the magnetic recording tape (not shown) when the magnetic recording tape is fed in the forward direction (that is, from the second reel shaft 24 to the first reel shaft 22). Alternatively, the magnetic recording tape is played back from the first track, and the recording/playback head 38 rotates the magnetic recording tape in the reverse direction (i.e.,
When the magnetic recording tape is fed in the direction from the top of the first reel shaft 22 to the top of the second reel shaft 24, it is recorded on or reproduced from the second track of the magnetic recording tape.

On the right side of the second reel shaft 24, an operating member, for example, a tape running direction selection member (hereinafter referred to as selection member) 62, which is movable in the front and rear direction, is provided.
Straight guide holes 64 and 66 are formed in the front and rear ends of the selection member 62, and fixing pins 68 and 70 on the chassis (not shown) are inserted into these guide holes 64 and 66, respectively. engaged. Further, positioning holes L, M, and N of the same diameter are formed in the selection member 62 in series in the front-rear direction, and a ball 72 with a larger diameter is formed in the middle positioning hole M.
is engaged from below (from below in the direction perpendicular to the plane of the drawing), and this ball 72 is constantly pressed toward the selection member 62 by a coil spring (not shown). When the selection member 62 moves in the direction of arrow G, this ball 72 moves to the positioning hole N.
Furthermore, when the selection member 62 moves in the direction of arrow H, it engages with the positioning hole L.

On the upper surface of the rear end of the selection member 62 (the upper surface in the direction perpendicular to the plane of the drawing), there is a first magnetic head whose one end extends in front of the right front edge of the magnetic head support 38. The other ends of the operating levers 74 intersect. A guide hole 76 is formed at the other end, and a fixing pin 78 provided on the upper surface of the selection member 62 is engaged with this guide hole 76. Further, a fixing pin 80 on the chassis (not shown) is in contact with the front edge of the first operating lever 74 on the right side of the guide hole 76. Further, a tension spring 82 is stretched between the other end on the right side of the fixing pin 80 and a portion on the chassis (not shown) further above the other end. Another guide hole 84 is formed on the left side of the guide hole 76, and a fixing pin 86 on the chassis (not shown) is engaged with this guide hole 84. The shape of the guide hole 84 is such that when the first operating lever 74 rotates about the fixed pin 80, the first operating lever 74 can rotate clockwise relative to the fixed pin 86. It has a shape.

A fixing pin 88 is provided at one end of the first operating lever 74, and a tension spring 92 is connected between the fixing pin 88 and a fixing pin 90 provided on the magnetic head support 38. It's being passed around. When the selection member 62 is moved in the direction of arrow G, as shown in FIG. Rotates clockwise around the center. At this time, the fixing pin 88 provided at one end of the first operating lever 74 moves upward (upward in the direction perpendicular to the plane of the drawing), and the magnetic head support 38 is moved via the tension spring 92. Move the capstan 2 upward.
6 is brought into contact with the pinch roller 40. Next, the first
When the selection member 74 is moved in the direction of arrow H from the state shown in the figure, the first operating lever 74 is centered around the fixed pin 86 because the fixed pin 78 on the selection member 62 moves downward, as shown in FIG. It rotates clockwise as follows. At this time, the first operating lever 76
The fixing pin 88 provided at one end moves upward, and the magnetic head support 38 is moved upward via the tension spring 92, causing the pinch roller 40 to come into contact with the capstan 26.

Further, as shown in FIG. 1, a swinging member 94 is provided between the first and second reel shafts 22, 24, and the front end of this swinging member 94 is connected to the first and second reel shafts. It is rotatably engaged with a shaft 96 on a chassis (not shown) provided in front of the intermediate portion of the reel shafts 22, 24. Further, the rear end portion of the swinging member 94 extends to an intermediate portion between the first and second reel shafts 22 and 24, and a first idler 98 and a second idler are provided on the upper surface of this rear end portion. 100 are provided rotatably. And the swinging member 9
4 rotated clockwise, the first idler 98 came into contact with the rubber tire 28 mounted coaxially with the first reel shaft 22, and the swinging member 94 rotated counterclockwise. When the second idler 10
0 comes into contact with a rubber tire 30 mounted coaxially with the second reel shaft 24. Further, a third idler 102 is rotatably provided on the upper surface of the swinging member 94 above an intermediate portion between the first and second idlers 98 and 100. A rubber endless belt 104 is stretched between a pulley 32 coaxial with the capstan 26 and a third idler 102.
4 is in contact with the first idler 98 and the second idler 100 at an intermediate position between the pulley 32 and the third idler 102. Therefore, when the capstan 26 rotates in the direction of the arrow F or the direction of the arrow R, this rotational force is transmitted to the first idler 98 and the second idler 100 via the endless belt 104.

Further, a fixing pin 106 is provided on the upper surface of the swinging member 94 between the shaft 96 and the third idler 102, and a toggle spring 11 is provided between the fixing pin 106 and a fixing pin 108 on the chassis (not shown).
0 is installed. and toggle spring 110
In this case, the swinging member 94 is connected to the first and second reel shafts 2.
When the swing member 94 is located to the left of the neutral points of 2 and 24, the swing member 94 is biased clockwise, and when it is located to the right, the swing member 94 is biased counterclockwise.

Also, a pair of partially annular first protrusions 1 are formed from both sides of the swinging member 94 and are centered around the shaft 96.
12 and a second protrusion 114 project horizontally, and a rectangular engagement hole 116 is formed in the middle portion of the swinging member 94 sandwiched between the two side surfaces.

Between the selection member 62 and the swinging member 94,
It is rotatably engaged with a fixing pin 118 on a chassis (not shown) below the second reel shaft 24, one end of which extends horizontally to the right and intersects with the lower surface of the selection member 62, and the other end A substantially L-shaped manual switching lever 120 is provided that extends diagonally upward to the left and intersects with the engagement hole 116 below the swinging member 94. The combination of this manual switching lever 120 and the swinging member 94 constitutes a manual switching mechanism.

The manual switching lever 120 is composed of approximately two parts.

One of the parts is a straight first part having one end rotatably engaged with the fixing pin 118, extending to the right from the fixing pin 118, and having the other end intersecting the lower surface of the selection member 62. A switching lever 122,
The other component is located above the first switching lever 122, engages with the fixing pin 118 in a rotatable and vertically slidable manner, and has one end portion 123.
extends over the first switching lever 122 and crosses it, and the other end extends diagonally upward to the left to connect the swinging member 94.
A second switching lever 124 intersects with the engagement hole 116 below. Then, the first switching lever 1
A recess 126 is formed at one end of the recess 126 extending from the end toward the fixed shaft 118 . A fixing pin 128 is provided in this recess 126 so as to protrude downward from the lower surface of the selection member 62.
is engaged. In addition, the first switching lever 122
A guide hole 130 is provided approximately midway between one end and the other end.
A fixing pin 132 on the chassis (not shown) is engaged with this guide hole 130. The shape of the guide hole 130 is partially arcuate so that the first switching lever 122 can swing around the fixing pin 118. Furthermore, a fixing pin 134 is provided on the upper surface of the first switching lever 122 between the guide hole 130 and the fixing pin 118 so as to protrude upward. One end 123 of the second switching lever 124 is engaged with the fixing pin 134 so as to be slidable up and down. Furthermore, a compression coil spring 136 is installed between the lower surface of this one end portion 123 and the upper surface of the first switching lever 122, so that the second
One end of the switching lever 124 is deviated upward. Further, a displacement control mechanism 138 is provided at the other end of the second switching lever 124. The displacement control mechanism 138 has one end rotatably engaged with a fixing pin 140 provided on the upper surface of the other end of the second switching lever 124, and the other end rotatably engaged with a fixing pin 140 provided on the upper surface of the other end of the second switching lever 124.
Micro-swing lever 142 extending below 16
A fixing pin 144 is formed on both sides of the other end of this micro-swinging lever 142 and protrudes in both vertical directions, and a second switching lever 124 is formed on the second switching lever 124 that engages with the downwardly protruding portion of this fixing pin 144. The guide hole 146 has a circular arc shape. The upwardly projecting portion of the fixing pin 144 is inserted into the engagement hole 116 of the swinging member 94. Further, a tongue portion 148 extending rightward from the other end of the second switching lever 124 is provided.

The manual switching lever 120 configured as described above is
When the selection member 62 is moved in the direction of arrow G, the fixing pin 128 provided on the lower surface of the selection member 62 moves forward as shown in FIG.
The first switching lever 122, which is engaged with the fixing pin 128 through the recess 126, rotates counterclockwise about the fixing pin 118. Then, in conjunction with this, the second switching lever 124 also rotates counterclockwise. The fixing pin 144 on the minute swing lever 142 moves in the guide hole 146 in the clockwise direction in response to the position change of the fixing pin 140 on the second switching lever 124 in the counterclockwise direction. When the right end of the guide hole 146 is reached,
The upwardly protruding portion of the fixing pin 144 is connected to the swinging member 94.
It comes into contact with the left side surface of the engagement hole 116 of. At this point, the manual switching lever 120 also stops rotating.

Furthermore, when the selection member 62 is moved in the direction of arrow H from the state shown in FIG. 1, the fixing pin 128 provided on the lower surface of the selection member 62 moves rearward as shown in FIG. Now, this fixing pin 1
28 and the recess 126, the first switching lever 122 rotates clockwise, and at the same time, the first switching lever 122 engages with the first switching lever 122, and the second switching lever 1
24 also rotates in a clockwise direction. The fixing pin 144 on the minute swing lever 142 moves in the guide hole 146 in the counterclockwise direction in response to the change in the position of the second switching lever 124 in the clockwise direction. When the left end of the guide hole 146 is reached, the fixing pin 14
4 is the engagement hole 11 of the swinging member 94.
6 and presses and rotates the swinging member 94 counterclockwise against the biasing force of the toggle spring 110. The swinging member 94 is rotated counterclockwise by the biasing force of the toggle spring 110 when it passes the middle point between the first and second reel shafts 22 and 24, that is, the neutral point. Then, the first idler 98 provided at the lower end of the swinging member 94 separates from the rubber tire 28 mounted coaxially with the first reel shaft 22, and the second idler 100 then moves away from the rubber tire 28 mounted coaxially with the first reel shaft 22. At this point, the swinging member 94 stops rotating in the counterclockwise direction. Up to this point, the minute swing lever 142 has moved the downwardly protruding portion of the fixing pin 144 to the left end of the guide hole 146, while the upwardly projecting portion has been biased counterclockwise to the engagement hole of the swinging member 94. The switch rotates together with the second switching lever 124 until it comes into contact with the right side surface of the switch lever 116 .

In addition, as shown in FIG.
A remote control switching lever 150 is provided in front of the tongue portion 148 extending to the right from the other end of the tongue portion 24 and is movable in the front-rear direction. This remote control switching lever 150 has a linear guide hole 152 formed in the front and rear direction.
A fixing pin 154 on the chassis (not shown) is engaged with this guide hole 152. A tension spring 156 is stretched between the fixing pin 154 and the rear end of the remote control switching lever 150 to always bias the remote control switching lever 150 forward. Further, a rising portion 158 extending rearward is provided on the left side surface of the rear end of the remote control switching lever 150. The rear end of this rising portion 158 is linearly inclined from the upper end toward the rear of the lower edge. In addition, the remote control switching lever 15
0 is provided with a straight rise 160 extending from the left edge toward the rear of the right edge.

In the remote control switching lever 150 having such a configuration, the jack of a remote control device (not shown) inserted from the outside of the tape recorder 20 comes into contact with the riser 160 from the front, and the remote control switching lever 150 is moved by the tension spring 1.
56, the remote control switching lever 150 rises 15.
The rear end of 8 is connected to the tongue portion 14 of the second switching lever 124.
8, and the entire second switching lever 124 is moved against the force of the fixing pin 118 against the resistance of the compression spring 136.
and 134 downward. Then, the minute swing lever 142 provided on the other end of the second switching lever 124 also moves downward,
The fixing pin 144 provided on the small swing lever 142 is released from the engagement hole 116 formed in the swing member 94 . Therefore, at this point, even if the selection member 62 is moved in the direction of the arrow G or the direction of the arrow H, the manual switching lever 1
It is not possible to rotate the swinging member 94 via 20.

Next, the remote control switching mechanism will be explained.

A first excitation coil 16 is attached to each of the first protrusion 112 and the second protrusion 114 of the swinging member 94.
The second and second excitation coils 164 are wound so as not to contact the first and second protrusions 112 and 114, respectively, and constitute plunger solenoid drive means. and the first excitation coil 16
2, the first protrusion 112 moves clockwise through the first excitation coil 162, and when the second excitation coil 164 is energized, the second protrusion 114 moves through the second excitation coil 162. It is adapted to move counterclockwise in the excitation coil 164.

Further, a first circuit changeover switch SW ₁ and a second circuit changeover switch SW ₂ are provided in front and behind the selection member 62, respectively, and when the selection member 62 moves in the direction of arrow G, The front end comes into contact with the first circuit changeover switch SW ₁ and activates it, and when the selection member 62 moves in the direction of arrow H, the rear end comes into contact with the second circuit changeover switch SW ₂ and activates it. let Further, a power switch SW ₃ is provided in front of the left front edge of the magnetic head support 38, and when the magnetic head support 38 moves forward, its left front end comes into contact with the power switch SW ₃ and activates it. let

The first and second circuit changeover switches SW ₁ and SW ₂
and the power switch _SW3 have the following relationship. That is, the first circuit changeover switch
SW ₁ is a circuit changeover switch for rotating a capstan drive motor (not shown) in the forward direction shown by arrow F, and a second circuit changeover switch
Similarly, for SW ₂ , move the capstan drive motor to arrow R.
This is a circuit switch for rotating the motor in the reverse direction shown by , and the power switch SW ₃ is a power switch for the capstan drive motor.

Move the selection member 62 in the direction of arrow G or in the direction of arrow H.
After selecting the rotating direction of the capstan drive motor, the magnetic head support 38 moves forward a moment after the selection member 62 starts moving, and moves the capstan in the running direction of the motor selected above. It rotates the drive motor.

As described above in detail, the swinging member driving device of the present invention includes a swinging member, a toggle spring connected to the swinging member, and a plunger/solenoid driving means for swinging the swinging member. are doing.

Therefore, the initial rocking force to the rocking member is reduced by the plunger.
Once the force is applied by the solenoid drive means, the swinging member can be swung by the elastic force of the toggle spring.

Therefore, the swinging member drive device of the present invention can be used in a tape recorder that selectively moves a moving gear between a pair of reel shafts in order to transmit rotational driving force from a motor to either one of the pair of reel shafts. If applied, it will consume less power to change the reel drive, and has the advantage of being economical with less battery consumption, especially when batteries are used to operate a tape recorder. ing. Furthermore, since the swinging member driving device according to the present invention simply combines a toggle spring with a conventionally well-known plunger/solenoid driving means, it is more effective than a conventional swinging member driving device using only a plunger/solenoid driving means. , the configuration is extremely less complicated and therefore compact.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the tape recorder of the present invention. FIG. 1 is a plan view showing the configuration of the embodiment, and FIGS. FIG. 3 is a plan view showing the operating state. 20... Tape recorder, 62... Tape running direction selection member, 94... Rocking member, 110... Toggle spring, 120... Manual switching lever, 150...
...Remote control switching lever, 162...
First excitation coil, 164... second excitation coil.

Claims (1)

[Scope of Claims] 1 A device comprising a swinging member, a toggle spring connected to the swinging member, and a plunger/solenoid drive means for swinging the swinging member, A rocking member driving device characterized in that the rocking member is rocked by the elastic force of the toggle spring after power is applied by a plunger solenoid drive means.