JPS6087452A - Tape recorder recording/playback switching device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a recording/reproducing switching device for a tape recorder.

Conventional configuration and its problems Traditionally, in tape recorders, the operation force of the record button is canceled depending on the presence or absence of an accidental erasure prevention claw provided on the tape cassette. When the recording button is operated in a state where the force is permissible, the recording lever operates the recording/reproducing switching lever, and the recording/reproducing switching lever switches the recording/reproducing switch.

A conventional recording/reproducing switching device is shown in FIG. 1 and FIG. 2. 1st
In the drawings and FIG. 2, reference numeral 4 denotes a substrate constituting the tape mechanism, on which a support shaft 18 is implanted. Reference numeral 12 denotes a recording/reproducing switching lever that is rotatably supported on the supporting shaft 18, and an EIJ is attached to the tip of the supporting shaft 18 that projects beyond the upper recording/reproducing switching lever 12 when inserted into the supporting shaft 18.
By attaching the ring 14, it is pivotally supported on the support shaft 18. 1rli is a spring member inserted into the support shaft 18, one end of which is latched to the protrusion 6 provided on the substrate 4, and the other end of which is latched to the upper recording re-switching lever 12. The switching lever 12 is configured to apply a rotational biasing force in one direction. Reference numeral 20 denotes a printed circuit board disposed so as to face the tape mechanism, and a recording/reproducing switch 19 is attached thereto. Here, the upper recording re-switching lever 12 has a protruding piece 15 associated with the recording lever 10 on one side, and a protruding piece 16 associated with the upper recording re-switching switch 12 on the other side. Due to the biasing force applied by the member 17, one protrusion 16 of the upper recording reswitching lever 12 is constantly in contact with the recording lever 10, so that the upper recording reswitching lever 12 and the recording lever 1o
This prevents resonance between the two. The other protruding piece 16 of the upper recording re-switching lever 12 faces the operating lever of the upper recording re-switching switch 19 with a slight distance therebetween.

In such a configuration, when the recording lever 10 moves in the direction of arrow A in the figure by operating the recording button, the recording lever 1o resists the biasing force of the spring member 17 and moves the upper recording re-switching lever 12. One of the projecting pieces 15 is pushed to rotate the upper recording re-switching lever 12 in one direction about the support shaft 18. Then, the other protrusion 16 of the upper recording/re-switching lever 12 comes close to the operating lever of the recording/reproducing switch 19, and pushes the operating lever in the direction opposite to the direction of the arrow shown in the figure, so that the upper recording/re-switching switch enters the recording state. Switch to

On the other hand, when the recording button is released from the locked state, the recording lever 1o moves in the direction opposite to the direction of arrow A in the figure due to the biasing force of a spring (not shown).

Then, the upper recording re-switching lever 12 is rotated in the opposite direction r (by the biasing force of the spring member 17), and the other protruding piece 16 of the upper recording re-switching lever 12 separates from the operating lever of the upper recording re-switching switch 19. The upper recording/re-switching switch 19 returns to the reproducing state by itself.

However, in the recording/playback switching device described above, the E ring 14 for positioning the recording/playback switching lever 12, the spring member 17 for preventing resonance between the recording/playback switching lever 12 and the recording lever 10, and the rotation of the recording/playback switching lever 12. Since the support shaft 18 is required and the number of parts is large, the number of assembly steps increases and assembly is difficult.

Purpose of the Invention The present invention solves the above-mentioned conventional problems, and eliminates the use of a spring member for preventing E/IJ song resonance for positioning, a support shaft for rotational support, etc., and reduces the number of assembly steps. The purpose of the present invention is to provide a recording/playback switching device that can perform the following functions.

Structure of the Invention In order to achieve the above object, the present invention provides support protrusions at both ends of the rotating shaft, and also includes a recording/playback switch operating protrusion and a recording lever operating protrusion perpendicular to the rotating shaft. A recording/reproducing switching lever is provided with an elastic tongue and is rotatably supported between a pair of receiving pieces provided on a base plate, and a recording/reproducing switching lever is provided with an elastic tongue so as to be perpendicular to the rotating shaft. is in contact with the base plate, and the operating protrusion is in constant contact with the recording lever, thereby storing elastic energy in the elastic tongue.

DESCRIPTION OF EMBODIMENTS FIGS. 3 and 4 show an embodiment of the recording/reproducing switching device of the present invention. In the figures, numeral 31 is a recording/reproducing switching lever made of synthetic resin; It has elastic pieces 33 at both ends, and the rotation shaft portion 320 is attached to the outer surface of the elastic piece 33.
A support protrusion 34 is provided so as to coincide with the rotation axis. The rotary shaft portion 32 also has a protrusion 36 for operating the recording/reproducing switch on one side and a protrusion 35 for operating the recording lever on the other side, so as to be orthogonal thereto. Further, the rotating shaft portion 32 has an elastic tongue piece 37 perpendicular thereto. Reference numeral 38 denotes a substrate constituting the tape mechanism, and a pair of receiving pieces 39 are provided by cutting and raising, and a through hole 39 for receiving the support protrusion 34 is provided at the tip of these receiving pieces 39.
A is provided. 4o is a recording lever constituting the tape mechanism; 4 is a printed circuit board disposed to face the tape mechanism; and 4o is a recording/playback switch.

42 is attached. Here, when the upper recording re-switching lever 31 starts to fit its rotating shaft portion 32 between the pair of receiving pieces 39 provided on the substrate 38, the upper recording re-switching lever 31 The support protrusion 34 is connected to the receiving piece 39
It is pivotally supported in a through hole 39a at the tip and is rotatably supported with respect to the substrate 38. Then, the tip of the elastic tongue piece 37 provided on the rotating shaft portion 32 is brought into contact with the substrate 38 .

At this time, the operating protrusion 36 provided on the upper recording re-switching lever 31
comes into contact with the recording/reproducing lever 4o and slightly bends the elastic tongue 37, thereby storing elastic energy in the elastic tongue 37 itself. Therefore, the operating protrusion 35 of the upper recording re-switching lever 31 and the recording lever 40 are always in contact with each other by the elastic energy stored in the elastic tongue 37, and resonance between them can be prevented. . The tip of the support protrusion 34 is tapered in the direction in which the rotating shaft portion 32 of the upper recording re-switching lever 310 is fitted between the pair of receiving pieces 39 of the substrate 38, and the upper recording re-switching lever 31 can be smoothly attached to the substrate 38.

In such a configuration, when the recording lever 40 moves in the direction of arrow B in the figure by operating the recording button, the recording lever 40 pushes the operating protrusion 35, so the upper recording re-switching lever 31 moves to the supporting protrusion. 34 in the counterclockwise direction, and press the operating lever of the upper recording re-switch 42 with the operating protrusion 36.
Switch to recording mode. At this time, the elastic tongue piece 37 deflects more and stores a large amount of elastic energy. on the other hand,
When the recording button is released, the recording lever 4
0 moves in the direction opposite to the direction of arrow B shown in the figure, and the upper recording re-switching lever 31 is rotated counterclockwise by the elastic energy stored in the elastic tongue piece 37. Then, the operating protrusion 36 of the upper recording reswitching lever 31 retreats to its original position.
The upper recording/re-switching switch 42 automatically returns to the reproducing state.

Effects of the Invention As described above, according to the present invention, since the support protrusion of the recording/reproduction switching lever is inserted into the through hole of a pair of receiving pieces of the board for rotational support, an E-ring is used for positioning. The recording/reproducing switching lever can be rotatably supported without any movement. In addition, since the recording/reproducing switching lever and the recording lever are always in contact with each other by utilizing the elastic energy stored in the elastic tongue piece formed integrally with the recording/reproducing switching lever, a separate resonance prevention spring must be used. Resonance can be prevented without any noise.

Therefore, the number of parts can be reduced and the number of assembly steps can be significantly reduced.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a conventional tape recorder recording/reproducing switching device, FIG. 2 is an assembled perspective view of the main parts of the device, and FIG. 3 is an embodiment of the tape recorder recording/reproducing switching device of the present invention. 4 is a side view of the device, and FIG. 6 is an assembled perspective view of the main parts of the device. 31...Recording/reproduction switching lever, 32...Rotating shaft portion, 33...Elastic piece, 34...Support protrusion, 3
6... Working protrusion piece, 36... Operation protruding piece, 37...
...Elastic tongue piece, 38... Substrate, 39...
...Socket piece, 39a...Through hole, 40...
Recording lever, 41... Printed circuit board, 42...
...Recording/playback switch. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure U Figure 2

Claims (1)

[Claims] A recording/reproducing switching lever having an operating protrusion and an operating protrusion perpendicular to the rotating shaft, and an elastic tongue on the rotating shaft; The recording/re-switching lever includes a substrate having a pair of receiving pieces each having a through hole for receiving the support protrusions at both ends of the rotating shaft portion of the upper recording-re-switching lever, and a recording-reproducing switch associated with the operating protrusion of the upper recording-re-switching lever. The upper recording re-switching lever is rotatably supported on the base plate, the elastic tongue piece is brought into contact with the base plate, and the recording lever is always brought into contact with the operating protrusion of the upper recording re-switching lever. A recording/reproducing switching device for a tape recorder, characterized in that the elastic tongue is configured to store elastic energy.