JPS6112598Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to the invention of a tape player using a two-reel type cartridge, which is suitable for forming a relatively thin tape player, so that the tape runs in a predetermined direction whenever the cartridge is attached. This is what I did to get it.

A two-reel cartridge (hereinafter simply referred to as a cassette), commonly referred to as a cassette, is thin and compact, and the design of the player that plays it is also compact, and it is also possible to record multiple channels. Today, it is being widely put into practical use as a recyclable material. However, it is well known that in a player using such a cassette, it is necessary to switch the tape running direction. In many cases, it is difficult to recognize from the outside whether the tape is in forward or reverse mode when it stops, and when inserting or playing the next cassette, it is difficult to tell whether the tape is in normal or reverse mode. It becomes unclear which channel will be played back, and one has to worry about how to load the cassette.
Therefore, in order to avoid such disadvantages, the tape feed direction of the player is always fixed in the process of removing (or loading) the cassette. That is, when the player stops in the forward feed state, it remains in the same direction, but when it stops in the reverse feed state, the tape feed direction remains the same. This book explains how to switch the pressure contact between the pinch rollers installed opposite to the capstan to convert to the forward feed state, and therefore always start the feed in one direction when loading a cassette or starting playback. Some proposals have already been made by applicants and others. Incidentally, in such a tape player, it is not only small but preferably thin, which is extremely advantageous when used as in-vehicle equipment, especially when used in combination with other equipment. In a conventional tape player of this type, a multi-layered wheel or gear for driving the reel of the cassette and winding the tape is provided in the flywheel portion having the capstan. Of course, there is a limit to how thin the capstan and flywheel can be made due to the fact that the cassette is attached to the flywheel part, and there are technical circumstances that make it impossible to make the capstan any thinner than this. It is in.

In order to eliminate such disadvantages, the inventor of the present invention has created a separate drive system for the flywheel portion having the above-mentioned capstan and a reel base drive system that drives the reel of the attached cassette and winds the tape. To provide a tape player which eliminates the need for a multi-layered wheel or gear configuration in a flywheel portion having a capstan, realizes stable tape running, and is relatively thin. However, if such a configuration is adopted, the flywheel drive system and reel base drive system are separate drive systems, so the one-way start function as described above is not possible. Therefore, it will not be possible to provide the following. That is, in the present invention, such points have been studied and devised to ensure one-way startability as described above, even though the flywheel drive system and reel base drive system are separate. The tape player has a one-way start characteristic that is favorable for use in a tape player that is appropriately thinned and allows for stable tape running, and is designed to always form an error-free and accurate usage relationship. This is what I did.

To explain the specific embodiment of the present invention shown in the attached drawings, first, the two-reel cartridge (i.e., cassette) to which the present invention is applied is as shown at the bottom of Fig. 1. The cassette 15 has two built-in reels, and a tape is wound between these reels.
The tape is guided to a playback end face 151 formed on one side of the player, and when the player is installed, this playback end face 151 is positioned facing the pinch roller and capstan to achieve desired playback or recording. This is generally known. However, the structure of the player is such that a folding section 101 is formed on one side of the main base plate 100 on the near side, and an auxiliary deck 110 is attached to the folding section 101a of this folding section 101 with one end overlapping the folding section 101 on the rear side. It has a plate shape elongated in the direction, and its tip part is a bent part 111 that hangs downward, and this bent part 111 allows a position at a certain height from the main bed plate 100 to the back of one side of the main bed board 100. As shown in FIG. 2, it is fixed in a state where it is held. A section is formed on the main base plate 100 between a folding part 112 formed on the other side of the auxiliary deck 110 as shown in FIG. 2 and a side wall plate 102 fixed to the other side of the main base plate 100. is a cassette loading space 80 as shown in FIG.
The base end of the rotary frame 50, which is bent into a shape and forms a protruding base portion 50a, is pivoted by pivots 51, 51, and a fixing portion 52 formed in a protruding manner at the intermediate portion of the rotary frame 50. A tension spring 5 is provided between the side wall plate 102 and a fastening portion 103 protruding from the lower side thereof.
3, the tip of the rotary frame 50 is always biased downward, and a cassette holder 55 is flexibly connected to the front end of the rotary frame 50. That is, the flexible connection of the cassette holder 55 to the tip of the rotating frame 50
At the middle part of the cassette holder 55, which protrudes sufficiently toward the front from the tip 50a of the cassette holder 50 and extends to the pivot point 51 of the rotating frame 50, there is a cassette holder 55 with a thickness that slightly exceeds the thickness of the tip of the rotating frame 50. A raised seat 58 is formed on the raised seat 58, and a fixed plate 54 has one side 54a attached to the front end of the rotating frame 50.
The stopper 5 should protrude slightly to cover the top of 0e.
9, 59, and is formed by folding up the cassette holder 55 at a position forward of the bulging seat 58 with respect to the elongated perforation 57 formed on the front end side of the rotating frame 50. The engagement between the engaging protrusion 56 and the perforation 57 ensures a locking relationship between the cassette holder 55 and the rotating frame front end 50e, and prevents the bulging seat 58 from expanding. Depending on the height, the lower surface of the fixing plate 54 and the cassette holder 5
A bendable relationship between the rotating frame front end 50e and the cassette holder 55 is achieved within the limit of the gap created between the bulging seat 58 and the upper surface of the front portion of the rotating frame.

Substantially all of the loading operation mechanism and eject mechanism are disposed on the auxiliary deck 110 located on the side of the cassette loading space 80 as described above. The structural member is a guide portion 55a formed on one side of the cassette holder 55 to hold the insertion end of the cassette 150.
A main slide plate 3 in which engaging portions 31, 31 that engage with the clamping piece 6 sliding along the front and back of the sliding direction extend above one side of the cassette loading space 80, and this main slide plate. A sub-slide plate 4 is provided on one side of the main slide plate 3 at approximately the same height as the main slide plate 3, and an L-shaped suction interlocking plate 7 is assembled to the lower surface side of the main and sub-slide plates 3 and 4. and interlocking link 8. The eject operation mechanism includes an eject lever 2;
The main eject plate 9 slides in conjunction with the pushing of the main eject plate 9, and the eject interlocking piece 13, which is located on the main eject plate 9 and whose tip is pivoted by a pivot 113 on the auxiliary deck 110, is also on the auxiliary deck 110. The actuating piece 16 is pivotally mounted at the middle, and the sliding plate 5 is provided on the lower side of the main sliding plate 3 on the front side of the auxiliary deck 110. However, even if these loading operation mechanism and eject operation mechanism are roughly classified as described above, they are interlocked with each other as will be described later, and are operationally related.

However, to explain the details of each member constituting the above-mentioned loading operation mechanism, the above-mentioned engaging portions 31 of the main slide plate 3 are each formed by bending downward at the tip of the arm portion 30, Each of these arm portions 30 is formed at a height slightly higher than the surface of the main slide plate 3 at a bent step portion 32 formed on the other side of the main slide plate 3. In addition, this main slide plate 3 is provided with two guide holes 33 and 34 along the length thereof, extending from the front side and the middle part to the back side. Another guide hole 35 along the width direction
A guide pin 114 provided on the auxiliary deck 110 engages with the first guide hole 33 provided on the front side, and a second guide hole 34 provided forward from the middle portion engages with the guide pin 114 provided on the auxiliary deck 110. The pivot 113 that pivots the eject interlocking plate 13 as described above is engaged with the
An engagement pin 71 provided at the tip of the suction interlocking plate 7 described above engages with the third guide hole 35 provided at the tip. The main slide plate 3 and the above-mentioned sub-slide plate 4 have tension springs between the fastening part 37 formed on the other side of the main slide plate 3 and the fastening part 47 formed at the base end of the sub-slide plate 4. The sub-sliding plate 4 is provided with two engaging holes 41 and 42 along its length in the intermediate and distal portions, and these engaging holes 41, The above-mentioned engagement holes 41 and 42 are provided in the middle part of 42.
Another L-shaped engagement hole 43 is bored between the engagement hole 43 and the engagement hole 43. A locking protrusion 44 is provided in the shape of a mountain on the inside of the bent corner of the engagement hole 43. The engaging element 115 on the auxiliary deck 110 is engaged with the first engaging hole 41, and the L-shaped engagement element of the suction interlocking plate 7 is engaged with the second engaging hole 42. Shaft 7 on auxiliary deck 110 inserted into the bent corner
2, the shaft 72 forms a collar portion 74 between it and the auxiliary deck 110, as shown in FIG. A tension spring 81 is provided at the tip of the tension spring 81 between the pivot shaft 113 and the tension spring 81.
2 is provided, and the base end of the interlocking link 8 and the distal end of the suction interlocking plate 7 are rotatably connected by a connecting pivot 73.

In detail, the eject lever 2 has an operation button 20 attached to its base end, and a guide hole 21 formed along the length of the eject lever 2 is attached to the switching rotation plate 14. It is configured so that it can be slid in the length direction by engaging with a retainer 140 protruding from the bottom surface of the switch plate 14, and can be pushed in by engaging with a retainer 140 that is protruded from the bottom surface of the switch plate 14. A spring 23 is stretched between the mounting shaft 141 and the mounting shaft 141.
Further, an engaging member 24 is provided protrudingly provided on the back side at a position near the fastening portion 22 to engage with an engaging groove 90 cut into the proximal end side of the main eject plate 9. As is clear from FIGS. 4 and 5, the main eject plate 9 has an extended portion 9a formed on one side extending long to form a switch operating portion 91. However, a cam portion 92 for head switching operation is formed on the side edge of the engaging groove 90 at a position slightly forward of the inner part thereof, and engages with the head plate 15 to connect it to the cassette mounting area. A trochanter 25 for advancing and retreating in 80 directions is faced. Also, a fixed seat 93 and an auxiliary deck 110 are formed by folding up the middle part of the main eject plate 9.
A return spring 94 is provided between them, and a protrusion 95 is formed at a position close to the stop seat 93 to act on the engagement protrusion 164 of the actuating piece 16 provided on the auxiliary deck 110. When the eject plate 9 is pushed in, the free end side of the operating piece 16 is pushed inward. Further, the protrusion 95
Another protrusion 96 is provided on the upper surface at a more inner position,
The protrusion 96 moves following the protruding cam portion 132 of the eject interlocking piece 13, and the retainer 38 on the bottom surface of the main slide plate 3 of the charging operation mechanism described above is connected to the drawer of the main slide plate 3. As is clear from FIGS. 2 and 4 in the pressed state and in the pushing process, the main slide plate 3 is joined to the straight edge 134 of the eject interlocking piece 13, but the main slide plate 3 is not completely pushed in. As a result, the eject interlocking piece 13 is connected to the engaging portion 135 as shown in FIG.
13, and the retainer 38 of the eject interlocking piece 13 is received in the notch 136, so that the rotation movement about the pivot 113 is not hindered. Moreover, such eject interlocking piece 13
As a result of the rotation, the protrusion 96 of the main eject plate 9 that was engaged with the engagement recess 137 of the eject interlocking piece 13 in the state shown in FIG. 4 comes out of the engagement recess 137, and the engagement relationship is released. As a result, the main eject plate 9 moves backward as shown in FIG. It is designed to form a dynamic state. The actuation piece 16 is attached to the auxiliary deck 110 by a pivot 160, and has an extension part 16 at its tip that engages with a latch 81 in the interlocking link 8 of the charging operation mechanism described above.
1 is formed, and a fixed seat 162 and an auxiliary deck 11 are formed.
A tension spring 163 is disposed between it and 0 so as to always return to the state shown in Fig. 4.
As described above, a locking protrusion 164 is formed on the base end side, and when the main eject plate 9 moves forward, it rotates as shown in FIG. 5 to release the retainer 81 from the locking protrusion 44. However, the sub-sliding plate 4 is moved back by the tensile force of the spring 11, and after the protrusion 95 has passed, it returns to the state shown in FIG. 4.

Among the configurations described above, the configuration according to the present invention is shown in further detail in FIG. 6 and subsequent figures. That is, an operating protrusion 9p is provided on one side of the main eject plate 9 to protrude downward, and this operating protrusion 9p
As shown in FIGS. 6 and 7, a passive portion 26p is formed by folding it up at a position close to the inner side of the feed direction switching plate 26 provided along the lower surface of the auxiliary deck 110.
is being forced to face The cam portion 269 disposed on the feed direction switching plate 26 is connected to each capstan 107, 1 of the fly hole 107w, 107w around which the first drive belt 303 from the motor 200 is suspended.
Each pinch roller 19 facing 07
0,190 engages with the trochanter 192a provided on the holding frame 19, and therefore the switching plate 26
When the pinch rollers 190 on either the left or right side are switched, the pinch rollers 190 on either the left or right side are attached to the capstan 1 via the tape.
Since the capstans 107 and 107 are rotating in opposite directions as shown by the arrows in the figure, the tape is moved by switching the pressure relationship. The feeding direction is switched, and such switching operation is performed by the plunger 271 of the electromagnetic solenoid 270. Cover plunger 2
71 is connected to the pivot 2 via the latch 276 of the connecting rod 272.
A cam piece 273 that is rotatably provided at 75 is disposed, and a W-shaped cam hole 27 of the cam piece 273 is provided.
4, the cam pieces 273 are alternately reversed by the engaging elements 276 acting alternately, and the engaging pins 277 provided on the cam pieces 273 act on the engaging holes 267 of the switching plate 26. Therefore, the switching plate 26 is operated to switch from side to side in FIG. Another engagement pin 278 of the cam piece 273 is separately connected to an engagement hole 288 at the base end of the interlocking wheel switching plate 28, which is disposed vertically in FIG. 6 and perpendicular to the switching plate 26. This interlocking wheel switching plate 28 is engaged with the guide pin 28.
1 through the elongated hole 282, the cam piece 273 is slid in the vertical direction in FIG. 6 by reversing the cam piece 273 as described above. A bending cam groove 284 is formed at the tip of the interlocking wheel switching plate 28, and the bending cam groove 284 has a sloped portion in the middle, and the switching actuator 27 is provided in the bending cam groove 284 so as to be rotatable by a pivot 27c. 27b
The bullet piece 27a, which is separately provided on the switching actuator 27, is engaged with an engaging part 261 formed at one end of the interlocking wheel mounting plate 260, and when the switching plate 28 is operated as described above, The interlocking wheel mounting plate 260 is switched via the switching actuator 27.

That is, the details of the switching actuator 27 and the interlocking wheel mounting plate 260 as described above are shown separately in FIG. The above-mentioned bullet piece 27a has its base end connected to the pivot shaft 27 of the switching actuator 27.
The switching actuator 27 is attached on both sides of such a bullet 27a, and its tip is engaged in the engagement part 261.
Side wall portions 27d, 27d protruding from the sides extend to an intermediate position of the elastic piece 27a, and the switching actuator 2
In the reverse switching operation of step 7, the switching operation by the bullet piece 27a is assisted. The interlocking wheel mounting plate 260 as described above is rotatably supported by a pivot 266 at an intermediate position thereof, and an intermediate gear 268, which is an interlocking wheel, is rotatably supported by a support portion 263 protruding from the intermediate portion thereof. The motor 20 is operated by the switching operation of the switching actuator 27 as described above.
0 to the flywheels 107w and 107w as described above via the belt 304.
The intermediate gear (interlocking wheel) 268 is engaged between the gears 301, 301 of the pulleys 360, 360, on which the belt 304 is suspended and driven, forming a drive system, and the reel base 300, 300, on either side thereof. In this way, gear 3
01. Under the condition that either side of the intermediate gear 268 or the reel base 300 is engaged and rotated, the intermediate gear 268 is rotated due to the rotational inertia force.
The gear 301 and reel base 300 that are engaged
It can be understood from the illustrated embodiment that the rotating members have a force component that is sucked in between them. The larger the rotational speed at is, the larger this force component is. Therefore, if the intermediate gear 268 under such linked rotation conditions is released simply by operating force via the bullet piece 27a, there is a strong tendency that smoothness will be lacking.
Although there is a disadvantage that the switching operation cannot be performed unless the rotational speed is reduced to a certain degree, the configuration that employs the side wall portions 27d, 27d as described above makes it possible to perform the switching operation under such conditions. This is achieved smoothly and is joined to the intermediate portion of the elastic piece 27a, and the elastic piece 27a in the area of the switching actuator 27 is made rigid from this joining point. That is, such a bullet piece 27
The operating force via a generally applies an acting force that is inversely proportional to the cube of the length of the bullet to the operating end, and when switching the switching actuator 27, the above-mentioned intermediate If switching cannot be achieved due to the resistance of the adsorption action in the gear 268, one of the side wall portions 27d adheres to the back surface of the bullet piece 27a, thereby reducing the length of the elastically acting portion of the bullet piece 27a by half. As a result, the operating force applied to the engaging portion 261 increases rapidly, making it possible to accurately disengage the intermediate gear 66.

In this illustration, the interlocking wheel mounting plate 260 as described above can also be changed to the neutral state (the gear on either side) by operating the fast forward/rewind switching plate 210 separately provided on the front side of the main base plate 301 and the reel base 300). That is, this fast forward/rewind switching plate 210 connects the intermediate gear 252 to the flywheel gear 107a via the switching piece 240.
The cam portion 2 of the interlocking plate 220 is configured to be engaged and disengaged between the reel base 300 and the reel base 300.
Interlocking wheel mounting plate 26 by either 24 or 224
A switching operation is realized in which the intermediate gear 268 is held in a neutral position by acting on either one of the zero rotors 264, 264, and is not engaged with any gear on either side. That is, during normal recording or playback, the tape is fed by a drive system via the belt 304 as described above, but during fast forwarding and rewinding, the interlocking system via the intermediate gear 268 is disengaged and the flywheel 107w is moved. The structure is such that fast-forwarding and rewinding by high-speed rotation can be easily achieved by operating the drive system through the media. Further, the intermediate gear 268, gear 301, and reel base 300 as described above can be used as a simple pulley or a rotor if necessary, but even in this case, the inertial effect accompanying the rotational force as described above is recognized to some extent.

To explain the operation of the device according to the present invention as described above, in the state shown in FIG. 6, the pinch roller 190 is pressed against the right capstan 107,
Tape the cassette to a capstan like this
7 and the pinch roller 190 to form a normal feeding state. From this state, by sliding the switching plate 26 to the left, this pressure contact relationship is switched and the left side It is generally known that when a tape is sandwiched between a capstan and a pinch roller, the tape is fed in reverse in this case.
However, when a cassette is removed after a certain playback, it is in either forward feeding or reverse feeding, but if the cassette is removed in the forward feeding state as shown in this figure, Even if the main ejector plate 9 is pushed forward in order to take out the cassette from the playback position, the feed direction switching plate 26 is in the position shown in FIG. Operation protrusion 9p of plate 9
is simply advanced to the imaginary line position in FIG. 6, and the feed direction switching plate 26 is not particularly operated, that is, the normal feed state is maintained. On the other hand, when the feed direction switching plate 26 is pushed to the left from the position shown in FIG. By pushing the main eject plate 9, the operating protrusion 9p pushes the passive part 26p, and therefore the switching plate 26, which had been moved to the left, is moved to the sixth position.
Return it to the position shown in the figure and enter the normal feeding state. The sliding action of the switching plate 26 causes the cam piece 273 to roll, thereby reversing the interlocking wheel switching plate 28 and the switching actuator 27, and operating the interlocking wheel mounting plate 260 via the elastic piece 27a. The intermediate gear 268, which is an interlocking wheel, is also changed from the engaged state with the gear 301 on the left side of the figure and the reel base 300 to the gear 301 on the right side of the figure.
Then, the engagement relationship with the reel base 300 is switched. In other words, the eject operation for removing the cassette can always be in the forward feed state, thereby creating a one-way start state.

According to the present invention as described above, a one-way start state can always be created by the eject operation, that is, the drive system for the flywheel for driving the capstan and the drive system for driving the reel base can be formed. Separately, in a preferable player mechanism in which the wow cause and other causes are eliminated,
Moreover, it can be equipped with a one-way start function that is advantageous when loading and unloading the cassette, and as mentioned above, by separating the flyhole drive system and reel base drive system, there is no need to duplicate drive members in the flywheel section. This invention is industrially highly effective because it eliminates the need to incorporate a tape player and provides a mechanism suitable for thinning, and at the same time provides a tape player that is truly preferable in practice and free from operational errors. It is.

[Brief explanation of the drawing]

The drawings show embodiments of the invention,
Fig. 1 is a partially cutaway slope view showing an example of a tape player according to the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a side view thereof, and Fig. 4 is a view of the main eject plate immediately before loading a cassette. Plan view showing the state, No. 5
The figure is a plan view showing the loading/unloading state of the cassette, FIG. 6 is a plan view showing the arrangement of the mechanism for forming the one-way start relationship, and FIG. 7 is a side view thereof. FIG. 8 is an explanatory diagram showing the configuration and operational relationship of the switching actuator. In these drawings, 2 is an eject lever, 9 is a main eject plate, 9p is an operating protrusion thereof, 26 is a feed direction switching plate for switching pinch rollers, 26p is a passive part thereof, 27 is a switching actuator,
27a is the bullet piece, 27b is the retainer, 27c is the pivot, 27d is the side wall, 28 is the interlocking wheel switching plate, 100 is the main base plate, 107 is the capstan,
107a is its gear part, 107b is its pulley part, 107w is a flywheel, 190 is a pinch roller, 200 is a motor, 210 is a fast forward/rewind switching plate, 220 is an interlocking plate, 260 is an interlocking wheel mounting plate, and 261 is its engagement. 263 is the support part,
264 is its trochanter, 266 is its pivot, 267 is an intermediate gear that is an interlocking wheel, 271 is an electromagnetic plunger,
272 is its connecting rod, 273 is a cam piece, 274 is a cam hole, 275 is a pivot, 276 is a retainer, 277,
278 is an engagement pin, 284 is a bent cam groove, 288
300 is the reel base, 301 is the gear, 303 and 304 are the belts from the motor, 36
0 indicates a pulley.

Claims (1)

[Scope of utility model registration request] The tape feeding direction is changed by changing the pressure contact relationship of the pinch roller against the capstan of each flywheel driven by a motor, and a two-reel type cartridge is mounted and driven, and an operating protrusion formed on the eject member is operated. The feed direction switching plate for switching the pressure contact relationship of the pinch roller to the capstan is faced to the passive part and the tape feed relationship on the flywheel side is set to a one-way start state by an eject operation. An interlocking wheel switching plate interlocked with the direction switching plate is provided, an interlocking wheel mounting plate provided in a rollable manner is engaged with a switching actuator connected to the interlocking wheel switching plate, and the interlocking wheel mounting plate described above is attached to the interlocking wheel mounting plate. An interlocking wheel is provided between a pair of gears driven by a drive system separate from the flywheel and a pair of reel bases that drive the reels of the cartridge, and the interlocking wheel mounting plate described above is installed. A tape player using a two-reel type cartridge in which the reel base drive system can also be switched and operated by rolling operation.