JPH0210577Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention has a metal head slide slidably arranged on a synthetic resin shimmer, and a capstan shaft that rotates via a metal bearing. This relates to a tape recorder that is freely pivoted.

(B) Prior Art Generally, it is known that in such a tape recorder, since the chassis is insulative, static electricity is generated on the capstan shaft to which the pinch roller is pressed, causing noise. Therefore, conventionally, as shown in FIGS. 1 and 2, when a metal bearing 2 that supports a capstan shaft 1 is press-fitted into a synthetic resin chassis 3, a grounding lug plate 4 is inserted between the two. By attaching a grounding lead wire 5 to the lug plate 4, the capstan shaft 1 is grounded via the bearing 2 and the lug plate 4. still,
6 is a flywheel integrated with the capstan shaft 1, and 7 is slidable on the chassis 3 (arrow A-
A metal head slide 9 is disposed in the direction A′) and is always urged in the direction of arrow A by a return spring 8. The metal head slide 9 rotatably supports a pinch roller 10 at one end, and the other end rotates on the chassis 3. Although the pinch lever is freely pivoted and is always urged to rotate in the direction of pressure contact with the capstan shaft 1 by the spring 11, the head slide 7 moves in the direction indicated by the arrow A as shown in FIG.
When it is at the stop position where it has slid in the direction, its rotation is restricted by the contact between the control piece 12 and the locking piece 13. Further, reference numerals 14 and 15 are an erasing head and a recording/playback head placed on the head slide 7, and the recording/playback head 15 side is a grounding head that is tightened and fixed with a mounting screw 16 so as not to be affected by induced hum, etc. The shielding outer case is grounded via a lug plate 17 and a grounding lead wire 18.

Therefore, in such a conventional method, a grounding lead wire for the capstan shaft and a grounding lead wire for the recording/reproducing head are required separately, leading to an increase in the number of work steps.

(c) Purpose of the invention The present invention has been made to solve the above problems, and provides a tape recorder in which the capstan shaft side can be grounded without using a dedicated grounding lead wire. This is what I am trying to do.

(d) Structure of the invention In other words, in order to achieve the above-mentioned object, the present invention has a metal head slide slidably arranged on a synthetic resin chassis, and a capstan shaft that is rotatable via a metal bearing. In the tape recorder, a wound portion of a torsion spring for urging the head slide to return is supported on the chassis, and one end thereof is connected to the head slide, and the other end is connected to a bearing. By bringing them into contact with each other, the head slide and the bearing are electrically connected via the torsion spring.

(E) Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that parts that are the same as those in the prior art will be given the same drawing numbers and their explanation will be omitted.

That is, the present invention uses a torsion spring 19 for urging the head slide 7 back, and the winding portion 19a of the torsion spring 19 is pivoted 20 on the chassis 3, and one end of the torsion spring 19 is brought into contact with the head slide 7. By bringing the other end of the protrusion 7' into contact with the outer peripheral surface of the bearing 2, the head slide 7 and the bearing 2 are always electrically connected via the torsion spring 19.

Therefore, the capstan shaft 1 is connected to the torsion spring 1.
9 and the head slide 7, the grounding lead wire 18 on the side of the recording/reproducing head 15 is connected to the ground.

(f) Effects of the invention As described above, according to the invention, a metal head slide is slidably disposed on a synthetic resin chassis, and the capstan shaft is rotatably supported via a metal bearing. In this tape recorder, the head slide and the bearing are electrically connected via a torsion spring for urging the head slide to return, and the capstan shaft is grounded through the grounding lead wire of the magnetic head on the head slide. As a result, the number of parts and man-hours can be easily reduced compared to the conventional method.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view showing a conventional example, FIG. 2 is a Y-Y sectional view thereof, and FIG. 3 is a schematic plan view showing an embodiment of the present invention. 1... Capstan shaft, 2... Bearing, 3... Chassis, 7... Head slide, 15... Recording/playback head, 18... Grounding lead wire.

Claims (1)

[Scope of utility model registration request] A tape recorder in which a metal head slide is slidably disposed on a synthetic resin chassis, and a capstan shaft is rotatably supported via a metal bearing, and the head slide is returned to the tape recorder. By supporting the winding portion of a torsion spring for force on the chassis and abutting one end of the torsion spring against the head slide and the other end against the bearing, the head slide and the bearing are electrically connected via the torsion spring. A tape recorder characterized in that it is configured to be connected to a computer.