JPH064428Y2 - Pinch roller device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a pinch roller device for mounting a pinch roller on a capstan used for a tape recorder or the like.

(Prior Art) In order to run a tape in a conventional tape recorder or the like, a current is applied to a solenoid to contact a pinch roller via the tape to a capstan, a plunger is driven to rotate the tape on the capstan. It was pressing.

(Problems to be solved by the invention) In order to press the tape on the capstan and operate the pinch roller with the plunger, in order to press the tape in a short time, it is necessary to operate the plunger at high speed. The pinch roller collides with the capstan via the tape at a high speed, so that an impact sound is generated and at the time of recording, the sound is recorded on the tape through the microphone. Since the roller has to be made of a hard member and becomes harder, there is a drawback that the impact noise is increased.

(Means for Solving Problems) The present invention is a pinch roller that opposes a plunger driven at high speed by abutting a cushion roller provided on a pinch roller supporting portion against an inclined surface before the pinch roller collides with a capstan. The capstan and the capstan are softly attached to reduce the collision noise between the pinch roller and the capstan.

(Embodiment) An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a schematic view for explaining an operating state. Tape recorder capstan 1
Are driven by a motor (not shown) and are pivotally supported by the bearing housing 2. The pinch roller 4 is pivotally supported on a roller arm 6 by a rotary shaft 5 at a position facing the capstan 1 with a tape 3 interposed therebetween, and the roller arm 6 is pivotally supported by a chassis on a shaft 7. The roller arm 6 is driven by a plunger 8 which pulls a pin 9 provided on the roller arm 6 to rotate about a shaft 7. The plunger 8 is adapted to start its operation by passing a current through a solenoid (not shown). The roller arm 6 includes a cushion arm 11 that supports a cushion roller 10 on a shaft 12 and a shaft 13 on the shaft 13.
The cushion arm 11 is rotatably supported by and is attracted by a spring 14 to a stopper 15 at a fixed position of the roller arm 6. In the cushion arm 11, the plunger 8 is pulled in the direction of the arrow A, and the cushion roller 10 shown in FIGS.
Center of housing 2 and cushion arm 1 when abutting against
When the angle θ formed by the line connecting the shafts 1 of 1 is provided, the cushion roller 10 is provided with a cylindrical slope 1 of the bearing housing 2.
6 and the angle θ increases, and the spring 14 opposes the rotation of the roller arm 6 by the plunger 8 and softens the rotation of the roller arm 6 while the pinch roller 4 collides with the capstan 1. And capstan 1 is softly attached as shown in Fig. 2 (C). When the roller arm 6 is pulled by the plunger 8 by applying a current to the solenoid, the roller arm 6 increases in speed with time and tries to rotate about the shaft 7, but before the pinch roller 4 contacts the capstan 1, the cushion roller 10 And the energy absorbed at this time, the cushion roller 10 rolls on the slope to increase the angle θ of the cushion arm 11 and the spring 14 against the increase of the angle θ of the cushion arm 11. The rotation energy of the roller arm 6 is absorbed by the energy absorbed by. The material of the pinch roller 4 cannot be made of a soft member because of changes over time, but since the cushion roller 10 may be a soft member, it is easy to absorb the collision noise.

(Effect) Since a cushion arm is provided on the roller arm in the present invention, the collision noise between the capstan and the pinch roller can be reduced, and the operation time in which the pinch roller contacts the capstan via the tape when the tape is driven can be shortened. You can

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a view for explaining the operation thereof. 1 …… Capstan, 2 …… Bearing housing 3 …… Tape, 4 …… Pinch roller 5 …… Rotary axis, 6 …… Roller arm 7,12,13 …… Axis, 8 …… Plunger 9 …… Pin , 10 …… Cushion roller 11 …… Cushion arm 14 …… Spring, 15 …… Stopper 16 …… Slope

Claims (1)

[Scope of utility model registration request] 1. A device for recording / reproducing by driving a tape, the pinch roller facing the capstan and pressing the tape against the capstan via the tape, and the pinch roller being pivotally supported and rotated by the operation of a plunger. A roller arm, a cushion arm pivotally supported by the roller arm and pulled by a spring to a fixed position on the roller arm, and a cushion roller pivotally supported by the cushion arm, and the pinch roller contacts the capstan and the tape. A pinch roller device, characterized in that a cushion roller is made to collide with an inclined surface in advance, a cushion arm is rotated, and the rotation of the roller arm is absorbed by a spring to reduce a collision noise of the pinch roller to a capstan.