JPS6236448U - - Google Patents

Description

[Brief explanation of the drawing]

The drawings show an embodiment of the operation mode setting mechanism of the cassette tape recorder according to the present invention, and FIG. In order to simplify the drawing, details of the chassis and various parts are omitted. Figure 2 is a plan view showing only the drive source relationship, Figure 3 is a plan view showing the relationship between the reel stand and idler, and Figure 4 is the relationship between the drive gear, control cam gear, direction arm, etc. FIG. 4 is a plan view showing a forward stop state, and FIGS. 1 to 4 each show a forward stop state. Figure 5A,
B is a perspective view showing the control cam gear, A is a perspective view as seen from a top view, and B is a perspective view as seen from the bottom side. FIG. 6 is a perspective view of the direction arm, FIG. 7 is a plan view showing the engagement state between the direction arm and the direction slider, FIG. 8 is a rear view showing the head reversing mechanism, and FIG.
The figure is a plan view showing the relationship between the direction slider and the pinch roller, FIG. 10 is a rear perspective view of the idler component, FIG. 11 is a plan view showing the fast forward and rewind switching mechanism, and FIGS. FIG. 15 is a plan view showing the relationship between the control cam gear and the direction arm, FIG. 12 showing the forward stop position, and FIG. 13 showing the reverse stop position. Fig. 14 is a plan view showing the reversal area of the head from forward to reverse, and Figs. 15 A to F are plan views showing the engagement positional relationship between the control cam gear and the engagement portion (pin) of the direction arm. where A is the forward stop position, B is the forward play position, C is the forward cue position, D is the reverse stop position, and E is the forward stop position.
indicates the reverse play position, and F indicates the reverse cue position. 16A to 16C are plan views showing the relationship between the control cam gear and the trigger lever, where A shows the stop position for both forward and reverse, B shows the play position for both forward and reverse, and C shows the forward and reverse positions. , shows the positional relationship of reverse queue and review, respectively. 17A to 17D are plan views showing the positional relationship between the idler component and the direction arm, A shows the forward stop and play positional relationship, B shows the reverse stop and play positional relationship, and C indicates the positional relationship between forward queues and reviews, and D indicates the positional relationship between reverse queues and reviews. FIG. 18 is an operation timing chart of the first solenoid or the second solenoid accompanying each operation. 3: motor, 5: first solenoid, 6: second solenoid, 7: trigger lever, 8: switching lever, 9: drive gear, 14: idler component,
15: Slide base, 16: Drive gear, 17:
Control cam gear, 18, 19: Cam portion, 20: Direction arm, 21, 22: Engagement pin, 2
4: Switching cam gear, 25: Direction slider, 26: Magnetic head, 28: Head reversing mechanism.

Claims (1)

[Scope of utility model registration request] It has a control cam gear that rotates in mesh with a drive gear such as a flywheel gear by the operation action, and an engaging part that engages with a cam part formed on the cam gear, and the control cam gear rotates by the rotation of the cam gear. A direction arm is pivotally supported so that one end thereof can be moved between four positions, and the one end of the direction arm is engaged to allow the direction arm to swing. The cam gear is provided with play, cue, review and stop functions on the forward side depending on the engagement state of the engagement portion. 1. An operation mode setting mechanism for a cassette tape recorder, characterized in that a cam portion is formed for setting each of play, cue, review, and stop operation modes on the reverse side.