JPS6045492B2 - Reel stand device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a push-knob type reel stand device attached to a reel-to-reel VTR (reel-to-reel type VTR), a tape printer, an electronic computer, or other equipment. The purpose of this invention is to simply and rationally improve the mechanism of the stand device to improve its operability, as well as to increase the durability of the device and facilitate its manufacture.

The reel stand device according to the present invention will be described below with reference to the drawings. Fig. 1 is a longitudinal cross-sectional view showing one embodiment of the system with the reel attached, and Fig. 2 shows the main parts corresponding to Fig. 1 (
FIG. 12 is a plan view of a state in which a reel is omitted and a cover and a guide plate, which will be described later, are removed.

In the figure, 1 indicates the rotation axis (reel axis) of the reel stand,
This is supported by a substrate etc. other than those shown. Reference numeral 2 denotes a reel stand body with a circular ring attached to the reel shaft 1, 3 a central boss projecting from the upper surface thereof, and 4 a peripheral wall or reel fitting formed at the peripheral edge chamber position on the upper surface of the step stand main body. , 5 is a flange on the periphery thereof, 6 is a sheet disposed in the annular groove of the flange 5, and the tape reel 7 fitted around the reel fitting part 4 is attached to the lower surface of the hub 8. is received by the flange 5 via the seat 6. Note that 9 is a hub hole (reel hole), 10a and 10b are upper and lower flanges of the reel, and 11 is a wound tape layer. In the present invention, the push knob 12 is fitted to the center boss 3 so as to be slidable, and the push knob 12 is connected to the first spring means 1.
3, it is biased in a direction away from the reel stand main body 2.
This push knob 12 includes a cylindrical portion 12a that fits exactly on the outer peripheral surface of the center boss 3, and a closing portion 1 that closes one end of the cylindrical portion 12a.
; 2b, and a space 14 forming a so-called air cushion can be formed between the push knob 12 and the center boss 3. 12c is push knob 12
This is the gripping part.

A plurality of (three in the illustrated example) reel locking arms 15 are attached to the reel stand main body 2 at concentric positions of the bush knob 12 described above so as to be rotatable relative to the reel stand main body 2, and the direction of rotation thereof is determined. A second spring is installed between the reel stand main body 2 and the reel locking arm 15 so that the reel locking arm 15 is always biased inward, that is, in the direction of the axis 1. Stretch the means 16.

Reference numeral 17 denotes a rotation axis of the reel locking arm 15, which, as is clear from FIG. ing. Further, the reel locking arm 15 has an upper surface that forms an arc centered on the shaft 17 and is generally fan-shaped as a whole, and a rolling wheel 20 that rotates around the shaft 19 is located inside the upper end. installed. Further, in the present invention, a third spring means 21 is attached to the bush knob 12 at a position facing each reel locking arm 15, respectively.

In this case, the third spring means 21 has its lower end portion fixed to the cylindrical portion 12a, and its upper end portion bent in a dogleg shape. The lower part is shown with reference numeral 21b and the lower part is shown with reference numeral 21c.
Furthermore, this third spring means 21 is connected to the bush knob 12.
When not pressed (see Figure 3), the reel locking arm 1
The rolling wheel 20 of No. 5 is the lower part 21c of this third spring means 21.
and is configured such that by pushing the bush knob 12, the rolling wheel 20 relatively passes over the most protruding part 21a of the third spring means 21 and comes into contact with the upper part 21b thereof. It is. That is, the wheel 20 is the third spring means 21
By configuring the bush knob 12 so as to overcome the point a, a click motion is imparted to the operation of the bush knob 12. Note that 22 is a cover, and a window hole 23 is provided at a position corresponding to the reel locking arm 15, respectively.

According to such a device, the reel locking arm 15 is in the state shown in FIG. On the other hand, the reel 7 can be easily attached and detached.

Therefore, as shown in FIG. 3, the reel stand main body 2 of the reel 7
When the bushing knob 12 is pushed in the mounted state, the reel locking arm 15 is rotated outward by the elastic force from the third spring means 21 of the wheel 20 as described above. The edge portion of the hole 9 of the reel 7 is pressed, that is, the reel 7 is fixed to the reel stand body 2. Therefore, in this case, the reel locking arm 1 by the third spring means 21
5 is selected such that the outward rotational force exerted by the second spring means 16 is sufficiently larger than the inward rotational force exerted by the second spring means 16.
Also, when this bush knob 12 is pressed,
The bush knob 12 is located at the upper part 21b of the third spring means 21.
The state shown in FIG. 1 is maintained by engagement with the wheel 20.

According to the present invention described above, the reel 7 is connected to the reel stand main body 2.
7, by attaching it to the bush knob 12 and pressing the bush knob 12,
The reel 1 can be locked in the state shown in the figure, that is, the reel 1 can be locked into the reel stand main body 2.
In addition, in this state, the lock can be released by simply pulling the bush knob 12, that is, the state shown in FIG. 3 can be achieved, so the handling operation is very easy.

Further, since the bush knob 12 performs a click motion, the pressed state and the non-pressed state can be clearly distinguished during operation, and the pressed state can therefore be determined without visual inspection.

Further, when the bush knob 12 is pressed while the reel 7 is not attached to the reel stand main body 2, the reel locking arm 15 can freely rotate outward according to the shape of the third spring means 21. Therefore, the upper part 21 of the third spring means 21
b, the roller 20 cannot engage as shown in FIG. The lock state and cannot be made. Therefore, when the reel 7 is not attached, the bush knob 12 is always in the non-locked state, so when the reel 7 is attached to the reel stand main body 2,
There is no need to check the state of the bush knob 12. Also, by using a leaf spring as the third spring means 21,
The device can be expected to have a relatively long life, and furthermore, by forming a so-called air cushion with the space 14 as described above, a good feeling can be expected when operating the saw layer. In other words, there is an effect that the bush knob does not make any sudden movements.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of the device according to the present invention in a used state, FIG. 2 is a plan view of a part thereof, and FIG. 3 is a sectional view similar to FIG. 1 in an unused state. 2 is the reel stand body, 7 is the reel, 12 is the bush knob,
13 is a first spring means; 15 is a reel locking arm; 16 is a reel locking arm;
2 is a second spring means, 20 is a wheel, and 21 is a third spring means.

Claims (1)

[Scope of Claims] 1. A push knob that is slidably fitted into the center boss of the reel stand main body and is biased in a direction away from the reel stand main body by a first spring means; a plurality of reel locking arms that are pivoted in concentric positions, rotate in radial directions, and are all biased inwardly by a second spring means; It consists of a third spring means that rotates the locking arms outward, and when the reel is attached, presses the push knob to press each reel locking arm against the edge of the reel hole, thereby locking the reel. and the push knob is locked in the pressed position by the third spring means. 2. The reel according to claim 1, wherein an air cylinder is formed by a central boss of the reel stand main body and a push knob fitted around the central boss, and is used as a damper means for the push knob. Base device.