JPS581884Y2 - Fast forward operation mechanism in tape recorder using movable deck - Google Patents

Description

[Detailed description of the invention] This invention relates to the invention of a fast-forward operation mechanism in a tape recorder using a movable deck. In a tape recorder having a fast-forward operating lever and an eject lever, the operating system between the base frame and the movable deck is always appropriately linked, and the fast-forward switching operation and ejecting operation are performed. The aim is to create a mechanism that will not cause damage even if multiple operations are performed.

In a tape recorder in which a tape pack is inserted from the front side to form a relationship in which tape can be played or recorded, a cassette-type tape pack is used in particular, and the tape recorder itself is configured to be relatively compact. In this case, a movable deck is used to set the tape pack in the playback or recording position (hereinafter referred to as the operating position) and make it operate, and the movable deck is activated by loading the tape pack and releasing it with the eject lever. It is preferable to operate the tape recorder up and down, and it is also practically important to create a fast-forward state using a fast-forward lever in such a tape recorder. Conventionally, it has been preferable to have such an eject lever and a fast-forward lever. I can't find it.

That is, regarding the above-mentioned rapid forwarding, a rapid forwarding relationship is constructed by switching the interlocking pulley or the like of the drive system from the motor for normal tape feeding to an idler of a smaller diameter. Adopting a fast-forwarding mechanism using such an idler in a tape recorder of the type described above in which the movable deck is raised and lowered poses a very difficult problem in terms of its operation, and the device configuration has to be complicated. As a result, it is difficult to employ most of them.

In such a case, the movable deck must be provided with an idler for rapid traverse and a switching mechanism such as the interlocking pulley to be switched therewith, and a rapid traverse operation section for switching the idler and the interlocking pulley. Since the eject lever body and the eject lever must be mounted on the base frame, which is a fixed deck, it is necessary to establish a linkage between the fast-forward operation body on the fixed deck side and the switching mechanism body on the movable deck side. It is extremely difficult to properly maintain and ensure its operational relationship, and this inevitably results in a complicated configuration.

Therefore, in such cases, it is common to adopt a so-called pseudo-fast-forward method in which the head and pinch roller are moved back from their operating positions to feed the tape somewhat faster, or a fast-forward method by increasing the rotational speed of the motor. Although the former is called fast forwarding, its speed is significantly lower than that of full-scale fast forwarding, so a favorable fast forwarding effect cannot be expected, and the latter requires special electrical consideration, resulting in a considerable increase in cost and causing problems. is also not a preferable method.

The present invention has been devised through repeated efforts to eliminate the disadvantages of the conventional ones as described above, and is a full-fledged fast-forwarding system that uses the movable deck as described above and is equipped with an eject lever and a fast-forwarding lever. mechanism, and achieved smooth operation with a relatively simple configuration.
It is designed so that it will not be mechanically damaged even by repeated operations.

That is, the embodiment of the present invention shown in the attached drawings will be explained.
6 shows the assembled state, FIG. 7 shows the disassembled state of each member, and FIG. 8 separately shows the essential parts of the present invention.

The base frame 1, which is a fixed deck as shown on the right side of the middle part of FIG. , a shaft-fitting bag opening 16 and a pin-fitting opening 17 are arranged at the positions shown in the figure, and a motor setting area 110 is formed by attaching a rear face plate 19 having a front notch 19a to the inner part thereof. A movable deck 2 is attached to the bottom surface of the base frame 1, and a guide frame 3 is fixed to the top surface of the base frame 1, and a tape pack (Fig. (not shown) is adapted to be installed and removed between the upper surface of the base frame 1 and this guide frame 3, and furthermore, screen portions 11, 11 are provided oppositely on both sides of the base frame 1 as described above. There are, but
A sliding frame 4 is attached to the inside of one of these screen portions ii, ii (the front side in FIG. 7), and the screen portion 11
The guide element 40 is attached to the movable deck 2 so as to be inserted into the bending guide grooves 111, 111 provided oppositely at the front and rear of the guide element 40.
is a guide groove 4 provided vertically at the front and back of the sliding frame 4.
1.41 is also inserted to guide its operation.

In addition, horizontal guide grooves 42 42 are separately provided in the sliding frame 4 in a direction perpendicular to the vertical guide groove 41 , and in these horizontal guide grooves 42 , grooves are separately attached to the front and rear of the screen portion 11 of the base frame 1 . A guide element 43° 43 is inserted into the sliding frame 4.
It is designed to guide the operation in the horizontal direction.

A head plate 5 is provided on the part of the guide frame 3 that is not covered on one side of the base frame 1 described above, and a pinch roller holding frame 5 is provided on the head plate 5.
5, the head plate 5 and the pinch roller holding frame 55 are positioned on the base frame 1 in an overlapping state, and are connected to the sliding frame 4 at the shaft holes 51 and 54 formed on their base end sides. A vertical main shaft 44 is inserted and mounted, and a portion of the main shaft 44 extending downward from the sliding frame 4 is inserted into a guide body 25 attached to one side of the movable deck 2, so that the movable deck 2 can be moved. It is designed to guide the vertical movement of the deck 2.

The support member 50.50 provided on the tip side of the head plate 5 is used to mount the head 150 by appropriately interposing an elastic material 155 or the like so that the head 150 can be adjusted such as the azmuth adjustment and rear adjustment. A bent part 52 is formed on one side of the head 150 to fasten the cords guided to the head 150, and a guide groove 53 is further formed on one side of the head 150. A trochanter 132 provided on a shaft 131 at the tip of the trochanter 130 is fitted, and this trochanter 13
2 also faces the receiving portion 57 at the tip of the bottom surface of the pinch roller frame 55 described above.

The pinch roller frame 55 has a pinch roller 56 pivotally supported on its tip side, and a holding portion 58 on the upper surface side of the middle part.
A tape guide 59 is installed to prevent and guide the tape passing through the pinch roller 5656 portion from being caught.

The above-mentioned movable deck 2 has the above-mentioned guide elements 40 attached to mounting seats 20 and 20 provided on both sides thereof, respectively, and these guide elements 40 are bent guides as described above. The grooves 111 and guide grooves 41 are respectively fitted to guide the operation of the movable deck 2 and to slide the sliding frame 4 described above. A motor 120 is attached to the motor 120, and a bulging pressure 22 is formed in the middle thereof to mount a group of rotating members such as a flywheel on the bottom surface thereof, and is appropriately bulged out to the top surface side. A bottom plate 6 is fixed to the bottom of the expansion pressure 22 portion, and a gear box-like rotation interlocking member housing chamber is formed between the bottom plate 6 and the expansion pressure 22. The main parts accommodated in the storage chamber include the capstan 126 and the large diameter gear part 125a.
A flywheel 125 having a rotary drive part body 66 having a reel drive element 65 for fitting a winding reel therein, and an intermediate rotary body 81, 82 interposed between them. A belt 127 is suspended between 125 and the morph pulley of the motor 120, and the intermediate rotating bodies 81 and 82 are attached to an integral idler plate 8, and the idler plate 8 has a recess 38 formed in the middle thereof. One idler 82 is attached, and an idler 81 having a larger diameter than that of the idler 82 is attached to the tip thereof, and can be switched as appropriate by a suppressing operation on the operating section 80 of the idler plate 8. In other words, under normal conditions, the idler 81 is Due to the tensile force of the tension spring 83 stretched between the fastening part 87 of the plate 8 and the fastening part 202 of the movable deck 2, the relatively large-diameter intermediate rotating body 81 is moved to the flywheel 125 as shown in FIG. At the upper part of the gear part 12
A small diameter portion 225 and a gear portion 66 whose diameter is considerably smaller than that of 5a.
The operating unit 8 is interposed between the rotary drive unit 66 having a rotary drive unit 66 to feed the tape suitable for normal recording or playback.
0, the idler plate 8 resists the elasticity of the spring 83.
By pushing forward, the interlocking relationship by the intermediate rotary body 81 is released, and the idler gear 82, which is provided at a lower position than the rotary body 81 by the fast-forwarding shaft 84, is shown by a phantom line in FIG. Each gear portion 125a of both rotating bodies 125 and 66 as shown in FIG.

In FIG. 11, the idler gear 8 is interposed between 66a and 66a.
2 are joined in the relationship shown by solid lines and imaginary lines to form a fast-forward state.

A fitting element 23 having a constricted portion 23a formed at the base is separately attached to the movable deck 2, and the fitting element 23 and the above-mentioned reel driver 65 are connected to each other by a well-known type in a cassette tape pack (not shown). A support cylinder 27 is separately attached to the same side as the fitting 23, and the base end 70 of the interlocking arm 7 is attached to the support cylinder 27.
is supported by pivot 75.

Note that guide elements 28 and 29 are disposed on both sides of the above-mentioned fitting 23 of the movable deck 2, and the guide elements 28 are engaged with an elongated guide hole 78 formed on one side of the interlocking arm 7. In addition, the elongated hole 85 of the idler plate 8 described above is provided in the guide 29.
are fitted.

Further, guide elements 31 and 31 are arranged on the upper surface of the guide frame 3, and an eject lever 9 is provided in these guide elements 31 so as to be able to slide freely through a long hole 90 therein. The fastening part 91 and the guide frame 3 provided in
A tension spring 92 is provided between the first fastening part 32 formed at As shown in FIG. 1, etc., a tension spring 46 is also provided between the sliding frame 4 and the guide frame 3, and the sliding frame 4 is pushed forward and movable by inserting a cassette into the guide frame 3. The deck 2 is raised and lowered, and for this purpose, a joint surface 47 is formed on the connecting portion 45 which is formed upwardly on the upper surface.

As shown in the figure, the front end of the eject lever 9 is an engaging edge 93, and the driven portion 96 of the eject link 95 faces the engaging edge 93. The intermediate portion of the link 95 is pivotally supported by the pivot 15 on the base frame 1, and a spring 98 is interposed between the locking portion 34 of the guide frame 3 and the locking portion 97 of the link 95, so that the link 95 is always shown in FIG. The locking protrusion 96 provided in the passive portion 96 portion has a counterclockwise rotational force.
a is locked in the locking hole 35 of the guide frame 3 to hold the passive part 96 in a position facing the locking edge 93, and when the eject lever 9 is pushed forward, the eject link 95 is rotated and other operations are performed. A required ejecting operation is performed via a lock plate 113 using an operating protrusion 99 formed at the end.

Reference numeral 101 indicates a spring tensioned between the main frame 1 and one of the trochanters 40, and reference numeral 102 indicates a tension spring provided for the pinch roller frame 55 described above.

Reference numeral 10 denotes a fast-forwarding operation piece, and guide holes 136 and 1 are connected to the shaft 137 and the guide 138 on the lower surface of the base frame 1.
36, and has a slide arm 130 and a fast-forward arm 133 pivotally supported by the shaft 137 on its lower surface, and a fast-forward lock plate 140 is disposed on the upper surface of the base frame 1 by a shaft 144. ing.

The operation part 10a is formed at the base end of the fast-forward operation piece 10 described above, and a protrusion 139 is installed near this operation part 10a, and the protrusion 139 is used when the fast-forward operation piece 10 is pushed. The fast forward lock plate 14 is inserted into the notch 104 of the base frame 1.
The locking portion 141 of 0 is configured to be faced by the action of the spring 146, and the locking portion 141 is locked when the protrusion 139 enters as described above to hold the fast-forward operation piece 10 in the pushed-in position. In addition, in the fast-forward lock state thus formed, when the eject lever 9 is pushed forward, the operation section 94 formed hanging down on one side acts on the passive section 142 of the fast-forward lock plate 140. This is how one can be liberated.

Note that the joint portion 143 formed in the inner part of the fast-forward lock plate 140 is connected to the end edge 5a of the head plate 5 in a non-operating state, so that the fast-forward lock plate 1
40 in a clockwise direction, the locking portion 141 is retracted from the notch 104 portion, and the locking portion 141 is operated so as not to have a locking action with the protrusion 139 described above.

However, a spring 135 is disposed between the fastening part 210 protruding from one side of the fast-forwarding operation piece 10 as described above and the fastening hole 133b formed in the middle part of the fast-forwarding arm 133. When the fast-forward operation piece 10 is pushed forward as described above, the fast-forward arm 133 is also rotated clockwise via the spring 135.
Another tension spring 145 is arranged between another fastening part 129 provided on the base end side of the base frame 1 and a fastening part 213 formed hanging down on one side of the base frame 1. The fast forward arm 133
is energized to rotate counterclockwise, contrary to the action of the spring 135 described above.

A tension spring 102 is also provided between the attachment point 134 on the rising portion 105 formed on one side of the slide arm 130 and the attachment portion 151 on one side of the pinch roller frame 55 described above.
As shown in the diagram, the spring 10
2 urges the slide arm 130 to always rotate counterclockwise, and moves the trochanter 132 provided at the tip of the slide arm 130 to the shaft-fitting bag opening 16 of the base frame 1 corresponding to the tip position of the fast-forward operation piece 10. However, when the fast-forward operation piece 10 is pushed forward as described above, the inclined edge 152 formed at the tip of the fast-forward operation piece 10 acts on this trochanter 132, causing it to slide. Rotate the arm 130 clockwise,
Therefore, the trochanter 132 rotates the head plate 5 fitted in the guide groove 53 counterclockwise to move the head 150 and the pinch roller 56 away from the tape bonding state.

Furthermore, an operating section 148 is provided at the distal end of the above-mentioned fast-forwarding arm 133 and is bent at a right angle. 147, and this joint part 147 is activated by joining to the bottom surface of one side of the bulge part 201 formed in the middle of the base frame 1 so as to protrude a little, and the joint part 147 is operated by being joined to the bottom surface of one side of the bulge part 201 formed in the middle of the base frame 1, and Bent passive part 8 of idler plate 8
6 provides operating power.

Further, such an operation section 148 has a joint section 1 as described above.
A series of vertical cam edges 149 are formed, including the section 47, and when the movable deck 2 is lowered from the operating position and becomes inactive, as shown separately in FIGS. 8 and 9. The bent passive portion 86 of the idler plate 8 attached to the movable deck 2 is connected to this vertical cam edge 14.
9 and a stop 15 formed at the proximal end thereof.
4.

The above-mentioned pivot 15 planted and fixed on the base frame 1 pivots the center of the lock plate 113 on the bottom surface of the base frame 1, and the lock plate 113 has the above-mentioned sliding shaft at one end. A lock part 116 is formed which can be engaged with and disengaged from the main shaft 44 as described above in the moving position of the movable deck 2 interlocked with the sliding of the frame 4, and a stopper provided on the rear end surface of the base frame 1 at the other end. 119a and is operated by an operating section 183 of a pushing piece 180, which will be described later, and a spring 112a is formed between the negative side 119 and the fastening section 103 on the base frame 1. A passive operating portion 118 is formed on the other side of the ejector lever 95 for releasing the locking state of the locking portion 116 from the main shaft 44 by operating the ejector lever 95. There is.

According to the present invention as described above, the intermediate rotary body 81 for normal running of the tape and the intermediate rotary body 82 for forming a fast-forward state are provided on a single idler plate 8,
By moving the idler plate 8 in the length direction, tape forwarding and fast forwarding for playback or recording can be switched as appropriate, which greatly simplifies the configuration of this part and uses a single operating means. In addition, since the fast-forwarding arm 133, which is the operating means, is provided on the base frame 1 together with the fast-forwarding operation piece 10, the structure of the interlocking system on the movable deck side is simplified, and those members 10, 133 are Since the operation part 148 having a perpendicular cam edge 149 is formed on the fast-forwarding arm 133, the operation part 148 has a vertical cam edge 149. First, a favorable interlocking relationship is always ensured between the rapid-forwarding arm 133 and the idler plate 8, and effective operation can be achieved even when the rapid-forwarding arm 133 and the idler plate 8 are collapsed. There is a spring between
35 is provided to ensure interlocking between both members, each operation stroke during the lifting and lowering operation of the movable deck 2, fast forwarding operation, or locking operation can be appropriately absorbed, and the cartridge loading operation and fast forwarding operation can be performed. A preferred operation in a device in which a fast-forward operation lever and an eject lever are provided to perform each operation by always maintaining a functional engagement relationship and preventing damage to the mechanism even when the In combination with this, it is possible to use this type of movable deck to raise and lower the movable deck using the tape pack loading operation to form a playback or recording relationship. In a tape recorder, it is possible to accurately achieve the purpose of switching to a fast forward state by a simple and safe idler and the purpose of eject operation with a simple and low-profile configuration, and it can be used preferably, so it has great industrial effects. It is an idea.

[Brief explanation of drawings]

The drawings show the embodiments of the present invention, and FIG. 1 is a plan view showing the overall assembly state of the present invention;
Fig. 2 is a bottom view, Fig. 3 is a side view as seen in the direction of arrow ■ in Fig. 1, Fig. 4 is a side view as seen in the direction of arrow - in Fig. 1, and Fig. 5 is a side view as seen in the direction of arrow - in Fig. 1. Fig. 6 is a side view seen from the arrow ■ direction in Fig. 1, Fig. 7 is an exploded perspective view showing each component, and Fig. 8 shows the fast-forward arm and 9 is a plan view of the idler plate portion; FIG. 9 is a side view showing its operational relationship; FIG. 10 is a plan view of the flywheel and rotary drive unit body portion;
The figure is a side view partially cut away along the line M in FIG. 10 to show the vertical relationship. In these drawings, 1 is a base frame, 2 is a movable deck, 3 is a guide frame, 4 is a sliding frame, 5 is a head plate, 8 is an idler plate, 10 is a fast-forward operation piece, and 66 is a rotating and driving body. , 81 is an intermediate rotating body for normal tape feeding, 82
86 is the passive part of the idler plate 8; 120 is the motor; 125 is the flywheel; 126 is the capstan; 127 is the belt; 129
130 is the sliding arm, 132 is its trochanter, 1
33 is a fast-forwarding arm; 135 is a spring for interlocking the fast-forwarding operation piece 10 and the fast-forwarding arm 133; 147 is a joint; 1
48 is an operating section, 149 is a vertical cam edge, and 154 is a stop section.

Claims (1)

[Scope of utility model registration request] When assembling the movable deck to the base frame so that it can be raised and lowered, the movable deck is moved to the operating state for playback or recording using the tape pack loading operation, and the operating state is released by operating the eject lever. In this device, the rotary force from the motor is transmitted to the capstan through an appropriate interlocking system to move the movable deck, and the tape is fed through the interlocking system. An idler plate, which is disposed together with the intermediate rotating body and the intermediate rotating body tiger for rapid feeding, is slidably provided on the movable deck, and a rapid feeding operating piece separate from the eject lever for operating the idler plate; A fast-forward arm that operates the idler plate in conjunction with the fast-forward operating piece is disposed on the base frame, and a spring is interposed between the fast-forward operating piece and the fast-forward arm to link their operations. A fast-forwarding operation mechanism in a tape recorder using a movable deck, in which a vertical cam edge is provided on the operating part of the fast-forwarding arm relative to the idler plate to maintain a predetermined joint operation relationship regardless of the raising and lowering operations of the movable deck. .