JPH021716Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to the invention of an autoloading and autoejecting mechanism for a tape player, which uses a rack and pinion to automatically load or eject a tape pack. This is so that a reliable ejected state can be created so that the ejected tape pack will not be reloaded regardless of the situation.

In order to automatically load and eject a tape pack in a tape player, three switches are required to detect the start of loading, the end of loading, and the end of eject, but the operation of these switches may not always be possible depending on the position in which the tape player is used. There are disadvantages to not doing it properly. That is, one example of such a conventional mechanism is as shown in FIG. The loading start switch SW ₁ , the loading end switch SW ₂ and the ejecting end switch SW ₃ are arranged as shown in the figure, and the switch SW ₁ is connected to the loaded pack 100 .
The switches SW ₂ and SW ₃ are operated by the front end of the fastening member 3 or the rack member 2.
Generally, the spring 5 for the switch arm 4 is made of a spring with as weak an elastic effect as possible (if a strong spring is used, there will be a lot of resistance when the switch is operated), and therefore the ejection state as shown in Fig. 1 is avoided. In this case, the switch arm 4 is unstable, and there is a high possibility that the switch SW ₁ will be turned on due to vibrations, etc., and especially when this tape player is used with the tape pack loading direction being vertical or inclined, the tape pack 100 is unstable. If the action of the spring 3s is weak even when the fastening member 3 is engaged due to its own weight, there is a drawback that the spring 3s will slide toward the inner part, and the switch SW ₁ will be turned on and the tape pack 100 will be reinserted. Although this drawback can be avoided to some extent by increasing the elastic force of the spring 3s to improve the elastic force of the spring 5 and the locking force of the fastening member 3, in this case, when loading the tape pack or This has the disadvantage that the resistance during extraction is large and the operating filling deteriorates.

The present invention was devised after repeated studies in view of the above-mentioned circumstances, and its implementation is the second.
As shown in the figure. That is, the pinion 1, rack member 2, and locking member 3 are the same as those shown in FIG. 1 described above, and the switches SW ₂ and SW ₃ (not shown in FIG. 2) are also the same as those shown in FIG. The spring 5 is attached to the switch arm 4 of the loading start switch SW ₁ as shown in the figure, and the attachment point 15 of the spring 5 to the deck is connected to the pivot point of the arm 4. Charge tape pack 100 including landing point 4a
The attachment point 15 of the spring 5 to the deck and the connecting point 5a of the arm 4 are provided in front of the spring 5 near the straight line a...a parallel to the front edge 100a of the spring 5.
It is formed at a position close to the pivot point 4a when loading is completed.

That is, in accordance with the present invention as described above, it is clear that the tape pack 100 is loaded from the solid line position shown in the figure to the imaginary line position by movement of the rack member 2 by the drive of the pinion 1, and thereby the switch arm 4 The operating end 4b of the arm 4 is rotated as shown by the arrow, and when loading is completed as shown by the imaginary line, the operating section 14 presses the lever of the switch SW ₁ to turn on the switch SW ₁ . Completion of loading is detected, but it is clear that during the rotation process of the arm 4, the spring 5 described above gradually approaches the arm pivot point 4a, and therefore, the spring 5 corresponds to the four rotations of the switch arm. The resistance action (the urging force that attempts to return the arm 4 to the position shown by the solid line) is gradually reduced, and as the spring 5 is slightly extended by such rotation of the arm 4, the urging force increases. However, the reduction ratio of the biasing force due to the proximity of the spring 5 to the pivot point 4a is greater than the increase in the biasing force due to the extension of the spring 5, and in the end, the biasing force due to the spring 5 gradually decreases. Therefore, the tape pack 10
It is possible to carry out the loading operation without damaging the filling during charging of 0, and the completion of the loading can be detected by the switch _SW1 . In addition, even if the tape pack is inserted, the operation filling by the spring 5 is not damaged as described above, so that the elasticity of the spring 5 can be set to be relatively large, that is, the elasticity of the spring 5 can be made to be relatively large. Tape Pack 10 even when loaded in
It is possible to employ a spring that can sufficiently overcome the weight of zero, and thereby it is possible to effectively prevent reloading at the time of ejection.

In the above-mentioned device of the present invention, the arrangement of the spring 5 that biases the switch arm 4 does not necessarily need to be specified at a position where it is maximum from the switch arm pivot point in the ejected state; Any relationship may be adopted as long as the loading resistance of the tape pack 100 (biasing force by the springs 5) caused by the springs 5 at the time of completion of loading is reduced. In the embodiment shown in FIG. 2, the fastening member 3 provided on the rack member 2 is configured such that its fastening portion 30 is fastened to the pack 100 by means of springs 31. An engagement pin 32 is separately provided, and the engagement pin 32 faces the cam hole 6 in the setting table 50, and a cam portion 6a, a cam portion 6a, and a cam portion 6a are provided in the cam hole 6 at a position corresponding to the completion of loading and a position corresponding to completion of ejection, respectively.
6b are formed, and the pin 32 acts on these cam portions to release the above-mentioned state of engagement of the engagement member with the pack 100, and in this respect as well, the operational feeling of the tape pack 100 is improved. We are trying to

According to the present invention as explained above, the operational filling of this type of tape player is not impaired, and reloading at the time of ejection is effectively prevented regardless of the position in which the tape player is used, thereby making it possible to use the tape player stably. This invention achieves this purpose without requiring any special members, has relatively simple construction, and has a great practical effect.

[Brief explanation of the drawing]

The drawings show the technical contents of the present invention, and FIG. 1 is an explanatory diagram showing an example of a tape player that employs an autoloading and autoeject mechanism according to the prior art, and FIG. FIG. 3 is a plan view showing an example of a loading and auto-eject mechanism. However, in these drawings, 1 is a pinion,
2 is a rack member, 3 is a locking member, 4 is a switch arm, 4a is its pivot point, 4b is its operating end, 5
is the spring, 5a is its connection point to arm 4, 6
is a cam hole, 14 is an operating section, 15 is a mounting point, a...a
is the leading edge 1 of the tape pack 100 including the pivot point 4a.
This shows a straight line parallel to 00a.

Claims (1)

[Scope of utility model registration request] A rack member with a tape pack attached thereto is engaged with a pinion operated by a drive source to perform autoloading and autoeject operations, and the autoloading is completed by loading by a switch arm operated by the front edge of the tape pack. In a device in which the completion switch is operated and detected, the spring for energizing the switch arm is brought close to the pivot point of the switch arm when loading is completed, and moved away from the pivot point to the maximum state in the eject state. An autoloading and autoeject mechanism in a tape player characterized by being arranged as follows.