JPH0454580Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a tension regulator stopper for VTRs, etc., and in particular, uses a loading ring without requiring a mechanism for moving the tension regulator post position. This invention relates to a tension regulator stopper for VTRs, etc., which has a simple configuration.

[Problems to be Solved by the Prior Art and Invention] This type of conventional tension regulator stopper will be explained with reference to the plan view of FIG. 3 of the attached drawings. In the figure, a tension regulator arm 1 is pivoted approximately at its center to a shaft 2,
A tension regulator post 3 is erected and pivotally supported at its tip. Further, one end of a spring 4 is locked to the opposite side, and the other end of the spring 4 is locked to a spring locking piece 5 fixed to the chassis 2, and a weak tension is applied to the tension regulator post 3. are doing. Further, a substantially central portion of the tension regulator arm 1 is provided with a protruding portion 6 inward of the body, and a protruding piece 6a is provided at the tip of this protruding piece 6. Further, a slider 8 is provided in the cam groove 7 into which the protruding piece 6a is loosely fitted, and due to the sliding action of the slider 8, the protruding piece 6a is loosely fitted into the large diameter portion of the cam groove 7, and the tension regulator Either make the post 3 free or remove the cam groove 7.
The projection piece 6a is loosely fitted into the small diameter part of the tensioner.
The regulator post 3 is formed in a fixed state. Moreover, the mechanism is such that the position of the tension regulator post 3 is moved by the operation of the slider 8. Therefore, the above tension
The regulator post 3 is fixed when fast forwarding or rewinding the tape. That is, during the fast-forwarding or rewinding operation of the tape, the tension regulator arm 1 swings due to the tension of the tape, which interferes with the fast-forwarding or rewinding operation of the tape. Therefore, the tension
Fix the regulator post 3. Furthermore, the reason why the tension regulator post 3 is set in a free state is to apply a predetermined tension to the tape by the weak force of the spring 4 during recording and reproduction, thereby making the tape feed smoothly.

As described above, the conventional configuration includes a special moving mechanism for the slider 8 in order to move the position of the tension regulator post 3, and this slider 8 is provided with a cam groove 7, and the cam groove 7 is provided in the slider 8. The protruding piece 6a provided on the protruding piece 6 of the tension regulator arm 2 is loosely fitted into the groove 7, and the slider 8 is moved to fit the protruding piece 6a into the large diameter part or the small diameter part of the cam groove 7. By displacing the position,
It had a complicated mechanism for fixing or freeing the tension regulator post 3. The simple mechanism without a slider and cam mechanism creates technical problems that must be solved in order to move and fix and free the tension regulator post.

[Means for Solving the Problem] This invention was proposed in view of the above-mentioned problem as a solution to the problem.
A tension stopper energized by a stopper spring is fixed to the side wall of the chassis under pressure to facilitate fast forwarding and rewinding of the tape.Furthermore, a stopper pin is provided on the lower loading ring, and the stopper pin is brought into contact with the tension stopper. The VTR is characterized in that, by slight movement of the lower loading ring during play, the tension regulator arm, which is pressed against the shaft or the like at the tension stopper, is brought into a free state to facilitate tape feeding. It is intended to provide a tension regulator stopper such as the following.

[Function] The tension regulator arm is always energized by a stopper spring to press against the rising side wall of the shaft through the tension stopper, and since this stopper spring has a high elasticity, the tape One side of the tension regulator arm is fixed to the side wall of the chassis by pressure against the reaction force caused by the rapid forwarding or rewinding operation. Therefore, the tension regulator arm does not swing due to the tensile force of the tape that occurs during the fast-forwarding or rewinding operation of the tape, and smoothness of the fast-forwarding or rewinding operation can be expected. Furthermore,
During recording or reproduction, the lower loading ring moves slightly counterclockwise in FIG. A stopper pin forces the tension stopper clockwise. The tension stopper thus releases pressure on the tension regulator arm. Therefore, the tension regulator arm is urged toward the side wall of the chassis only by the weak spring pressure at the rear.
A tension suitable for tape feeding during a play operation is provided, and the tape feeding becomes smooth. Furthermore, the position of this tension regulator post is moved using the post base instead of using a moving mechanism such as a slider as in the past.
Compared to the conventional type, the overall mechanism is extremely simplified and the number of parts can be reduced, which improves assembly workability and contributes to cost reduction.

[Example] Hereinafter, an example of this invention will be described in detail with reference to the attached drawings. Reference numeral 10 is a tension regulator arm. A spring 12 having a weak tensile force is engaged with a protruding piece 10a provided at the rear end of the shaft 11 at the lower end of one side of the tension regulator arm 1, so that the lower end of the tension regulator arm 1 is connected to the left side of the shaft 11 in FIG. The force is energized toward the side wall 11a.
Further, the tension regulator arm 1 has an extension portion 10b extending substantially parallel to the side wall 11a of the shaft 11, and the left side surface P of the extension portion 10b is biased by a stop spring 13, which will be described later.
The tension regulator arm 10 can be fixed by pressing against the inner surface of the side wall 11a of the shaft 11. Moreover, the extension part 11b
A tension regulator post 14 is provided upright at the front end of the tape 15, and this tension regulator post 14 applies tension to the tape 15 to smooth the tape 15 feeding operation.

Further, a tension stopper 16 is coaxially pivotally connected to the pivot portion of the tension regulator arm 10. However, this tension stopper 16 is connected to the tension regulator arm 1.
It does not have to be coaxially supported with 0. Therefore, a protrusion 16a is provided on the right side of the tension stopper 16 in FIG.
6b is erected, and the pin 16b is connected to the tension
It is formed so as to come into contact with the side surface 10c of the regulator arm 10. Further, an L-shaped portion 16c is provided below the tip of the protruding portion 16a of the tension stopper 16, and a horizontal portion 16d of this L-shaped portion 16c is arranged so as to overlap the lower surface of the lower loading ring 17. Furthermore, a stopper pin 17a is provided below the lower loading ring 17 and is brought into contact with the front surface of the horizontal portion 16d. That is, in FIG. 1, the lower loading ring 17
When the lever moves slightly counterclockwise, the stopper 17a pushes the horizontal portion 16d clockwise, and the pin 16b of the tension stopper 16 releases the pressing force against the side surface 10c of the tension regulator arm 10. This is what happens.

In addition, since the tension stopper 16 always urges the tension regulator arm 10 toward the side wall 11a of the shaft 11, a stopper spring 13 having great elasticity is provided at the bottom of the tension stopper 16. With its upper end protruding to the right in FIGS. 1 and 2,
This protrusion 13a is tensioned by the stopper 16.
The L-shaped part 16c contacts the rear surface of the L-shaped part 16c, and its lower end part hangs down, and this hanging part 13b engages with the shaft 11, so that the stopper spring 13 constantly holds the side surface P of the tension regulator arm 10 against the shaft. The force is applied to press against the inner surface of the side wall 11a of 11.

One embodiment of this invention is constructed as described above, so that when the tape 15 is fast forwarded or rewound, the tensile force of the tape 15 becomes large, so that the tension regulator post 14 is prevented from swinging. It needs to be fixed. Further, during recording or playback, tension is applied to the tension regulator post 14 by a weak tension of the spring 12, but in this embodiment, both requirements are met. Satisfied with simple actions. That is, during play, the lower loading ring 17 moves slightly counterclockwise in FIG. 1, and this movement causes the tension stopper 16 to move slightly.
The biasing force applied to the tension regulator arm 10 by the tension regulator arm 10 is released, and the tension regulator arm 10 receives only a weak bias from the spring 12, so that the tape 15 can be fed smoothly. Furthermore, in the case of fast forwarding or rewinding, since the lower loading ring 17 rotates clockwise, the locking state of the tension stopper 16 by the pin 16a is released, and thus,
The tension regulator arm 10 is pushed against the side wall 11a of the shaft 11 by the force of the stopper spring 13.
Since the tension regulator post 14 does not swing at all against the tensile force of the tape 15, the fast-forwarding or rewinding operation of the tape 15 becomes smooth.

[Effects of the invention] As detailed in the above embodiment, this invention has the following effects:
The tension regulator arm is always operated by the stopper spring via the tension stopper.
It can be fixed by being pressed against the side wall of the drum or other parts of the drum, thereby making tape fast forwarding or rewinding smooth.Furthermore, during play, the slight movement of the lower loading ring can be used to bias the stopper spring. Then, by applying only a weak rear spring, a certain tension can be applied to the tension regulator post, thereby making it possible to smooth out the play motion, and to adjust the position of the tension regulator post. For movement, there is no need for a special movement mechanism like in the past, and it is now possible to simply use the post base. Therefore, the overall assembly workability is improved, and the number of parts is reduced, which contributes to cost reduction.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the present invention. FIG. 1 is a plan view of the main parts, FIG. 2 is a front view of the same, and FIG. 3 is a plan view of a conventional type. Explanation of symbols, 10... Tension regulator arm, 11... Shaft, 12... Spring, 13... Stopper spring, 14... Tension regulator post, 15... Tape, 16
...Tension stopper, 16b...Pin,
17...lower loading ring, 17a...stopper pin.

Claims (1)

[Scope of utility model registration request] The tension regulator arm, which is pivotally supported by the shaft, is fixed to the side wall of the shaft by means of a tension stopper, which is energized by a stopper spring, to facilitate fast forwarding and rewinding of the tape.Furthermore, a stopper pin is attached to the lower loading ring. the tension stopper pin is brought into contact with the tension stopper, and a slight movement of the lower loading ring during play frees the tension regulator arm which is pressed against the chassis or the like by the tension stopper. A tension regulator stopper for VTRs, etc., which is characterized by smooth tape feeding.