JPS6120643Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a record player that, when resuming a performance after a temporary interruption, lowers the tone needle to the same groove where the performance was interrupted. It is.

[Conventional technology]

Conventionally, the following devices have been provided with means for starting, interrupting, resuming, and ending a performance by raising and lowering the tone arm of a record player by lifting the tone arm or the like.

When the performance is temporarily interrupted and resumed, if the user has raised the tone arm to the lifting limit of the arm lifting lever by moving the operating lever with his fingers, etc., then When lowering the tone arm by moving the operating rod, at any position between the highest raised position of the tone arm and the lowest position, that is, until the tone needle engages the tone groove. Even if you stop the rod, the brake will be applied at that position, allowing you to hold the tone arm. Then, there was a device in which the tone needle was lowered into the tone groove by moving the operating rod again. (Unexamined Japanese Patent Publication No. 52-93305) [Problems to be solved by the invention] In the conventional device described above, when the performance is resumed after a temporary interruption, the arm lifting rod is used to raise the arm up to its lifting limit. After the tone arm is completely raised, the tone arm is lowered significantly until the tone needle engages with the tone groove, and the tone needle is held close to the record surface. By this stage, the tone arm has moved up and down significantly. still,
The tone arm can be rotated very easily in the horizontal direction,
Since it is constructed so that it can be rotated horizontally even by the slightest external force, harmful lateral wobbling occurs, making it impossible to accurately resume playing from the point where it was interrupted.

The present invention was made to eliminate the drawbacks of the conventional ones as described above, and allows the user to easily adjust the pitch by adjusting the minute height above the record surface without moving the tone needle up and down significantly from the record surface. It is an object of the present invention to provide a record player that can be held in the same position, lowered again, and resumed playing from approximately the same place where the playing was interrupted.

[Means for solving the problem] In order to solve this problem, the present invention aims to prevent the pitch needle from rising above a preset minute height above the record surface when the performance is interrupted. Provided with means to hold it at that height.

The user can then select the height of the tone arm from among three modes: during performance, during non-performance, and during standby. That is, the tone arm is not raised during performance, raised high during non-performance, and held at a very small height during standby.

Furthermore, the tone arm may be held by the holding means in a state in which the tone needle at the playing position is raised to the standby position without passing through the non-playing position, and the tone arm at the standby position may be raised to the standby position without passing through the non-playing position. The structure is such that the playing position can be reached without passing through the non-playing position.

[Effect]

With the device of the present invention, when the performance of the record player is temporarily interrupted and then resumed, the arm lifting rod etc. is completely lowered during the performance and is separated from the tone arm, so that it is not restrained. ,
The sound grooves are traced as the record rotates.

Next, when temporarily interrupting the performance, the user operates the arm lifting rod, etc. to lift the tone arm and hold it at a slight height above the record surface, but the tone arm is held at a slight height above the record surface. The height is pre-adjusted to the optimum position, so it will remain at the same height no matter who operates it.
In this case, unnecessary up and down movements etc. are not included in the process until the height is maintained at the minute height.

Next, when the performance is to be resumed, the user operates the arm lifting rod or the like to lower the tone arm and engage the tone needle with the tone groove on the surface of the record.

In this way, the tone arm moves up and down in the shortest distance in the ascending sequence. Therefore, the occurrence of harmful lateral vibration is also reduced.

1 to 3 are side views of an embodiment of the record player according to the present invention, with the side plate removed and a part cut away, and FIG. 1 shows the playing state when the tone arm is in the first position. , and the second
The figure shows the third position when the tone arm is in the third position.
The figures each show the tone arm in the second position. In each figure, members not directly related to the present invention, such as a motor, have been removed to avoid complication of the drawings.

In each figure, reference numeral 1 denotes a top plate of a record player, on which a turntable 3 having a central shaft 2 is provided, and a record disc 4 is currently placed on the turntable 3. Reference numeral 5 denotes a tone arm, and a cartridge 7 having a tone needle 6 is provided at one end thereof. The tone arm 5 is supported at its other end by a support shaft 9 via a support member 8 so as to be freely rotatable up, down, left and right with respect to the top plate 1. Further, the upper plate 1 is provided with a sleeve 11 into which an arm push-up rod 10 for raising and lowering the tone arm 5 is inserted.

On the other hand, a sliding plate 12 is provided below the upper surface plate 1 and is in contact with the lower end of the arm push-up rod 10 to move the tone arm 5 up and down.
2 is slidably supported in the horizontal direction by a guide 13 provided on the bottom surface of the record player and a guide (not shown) provided on the back side of the top plate. An operating rod 15 having an operating knob 14 is fixed to the upper part of one end of the sliding plate 12. The operating rod 15 is projected onto the top plate 1 through a long hole 16 provided in the top plate 1. Further, two positioning plates 17 and 18 of different heights are fixed to the lower part of this one end, and cutouts 19, 20,
21 are provided. The sliding plate 12 has a sliding plate 1
Push up rod 1 when 2 moves in the horizontal direction of the drawing.
Inclined portion 22 and horizontal portion 2 that can engage with the lower end of 0
3 is formed. Further, a protrusion 24 is provided at the end opposite to the end having the operating rod 15. Below the two positioning plates 17 and 18, a locking plate 2, which will be described below, is provided along each end surface.
5 and 26 are partially extended, and balls 27 and 28 received at each end of these locking plates are brought into contact with the lower end surfaces of the positioning plates 17 and 18, respectively. The locking plates 25 and 26 are both made of an elastic material, and one end of the locking plate 25 is attached to an adjustment plate 29, which will be described later, and one end of the locking plate 26 is attached to the top plate 1, and the one end of the locking plate 26 is attached to the upper surface plate 1. Both 27 and 28 are biased upwardly.

The adjustment plate 29 is made of an elastic material like the locking plates 25 and 26, and its upper end is fixed to the upper surface plate 1, and the adjustment screw 30 is inserted into the lower end.
Further, the above-mentioned locking plate 25 is attached to approximately the center thereof. The head of the adjustment screw 30 is attached to the side plate 3.
It is inserted into a through hole 32 provided in a side plate 31 so as to protrude from the upper surface of the housing 1, passes through the adjustment plate 29 via a spring 33, and is screwed into a nut 34 fixed to the adjustment plate 29. For this reason, the adjustment plate 29 is always urged to rotate counterclockwise, and by turning the adjustment screw 30, the adjustment plate 29 is rotated and the locking plate 25 attached thereto is rotated. Can be moved horizontally.

Further, on the right side of the sliding plate 12, there is provided a brake actuation member 36 made of an elastic material and having one end fixed to the side plate 35. A downwardly bent bent portion 37 is provided at the free end of the brake actuating member 36, and is biased so as to engage with the upper surface of the sliding plate 12. Furthermore, the brake arm 3 is provided with a brake shoe 38 on the upper part of the brake operating member 36.
9 is attached. The brake shoe 3
8 is located directly below the support shaft 9, and the brake shoe 38 comes into contact with the bottom surface of the support shaft 9 as the brake actuating member 36 rises.

The structure of one embodiment of the record player according to this invention has been described above. Next, the operation thereof will be explained using FIGS. 1 to 3.

When the tone arm is in the first position and a record is being played, the sliding plate 12 is pulled to the farthest left as shown in FIG. The pawl 28 is engaged with the notch 21, and the ball 2 provided on the locking plate 25 is engaged with the notch 21.
7 is in contact with the bottom surface of the locking positioning plate 17. Since the lower end of the arm push-up rod 10 is not in contact with the slope part 22 on the right side of the slope part 22, the arm push-up rod 10 is at the lowest position due to its weight, and the upper part of the arm push-up rod 10 is at the lowest position. Since it is being played, it is not in contact with the tone arm 5 either. The bent portion 37 provided on the brake actuating member 36 is connected to the sliding plate 12.
However, since the brake shoe 38 is not in contact with the protrusion 24, the brake shoe 38 is not in contact with the bottom surface of the support shaft 9, and the tone arm can freely rotate vertically and horizontally. There is.

Next, by operating the operating rod 15 and sliding the sliding plate 12 to the right, the tone arm 5 is brought to the third position as shown in FIG. . That is, when the operating knob 14 is pushed slightly to the right from the position shown in FIG.
1, the sliding plate 12 smoothly moves to the right due to the continuing pressing force, but due to the continued rightward movement, the ball 2
7 engages with the notch 19, the sliding plate 12 is temporarily positioned at that position. At this time, the sliding plate 12
By the rightward movement of the tone arm, the inclined surface 22 and the lower end of the arm push-up rod 10 engage with each other, and the arm push-up rod 10 is raised by the cam action of the inclined surface 22, and its upper end touches the tone arm. Due to the collision, the tone arm 5 is also raised, and the ball 2
7 is engaged with the notch 19, the tone needle 6 is brought to a position slightly away from the top of the record 4, that is, to the third position shown in FIG. Furthermore, the sliding of the sliding plate 12 causes the brake actuating member 3 to
Since the bent portion 37 of 6 rides on the upper surface of the protrusion 24, the brake operating member 36 is rotated clockwise, and the brake shoe 38 is pressed against the bottom surface of the support shaft 9, so that the tone arm 5 is moved in the horizontal direction. rotation is prevented.

Next, push the operating rod 15 further to the right to move the sliding plate 12.
If the tone arm 5 is further slid to the right, the tone arm 5 is brought to the second position shown in FIG. That is, when the sliding plate 12 is further slid to the right from the state shown in FIG.
7 is removed from the notch 19, and the ball 28, which was in rolling contact with the bottom surface of the positioning plate 18, engages with the notch 20. Due to this rightward movement of the sliding plate 12, the arm push-up rod 10 is further lifted upward by the cam action of the inclined surface 22, and is brought to a position where its lower end rests on the horizontal portion 23. As the arm push-up rod 10 rises, the tone arm 5 is also lifted from the position shown in FIG. 2 and brought to a position sufficiently distant from the record 4, that is, the second position shown in FIG. 3. On the other hand, the brake actuating member 36 rotates counterclockwise as its bent portion 37 overcomes the protrusion 24 due to the right movement of the sliding plate 12, and therefore the brake shoe 38 is separated by the bottom surface of the support shaft 9 and the tone arm 5 is in a horizontally rotatable state.

The adjustment screw 30 is for adjusting the height of the third position. By turning the adjustment screw 30, the adjustment plate 29 is rotated around the position where it is attached to the upper plate 1, thereby rotating the locking plate 25.
By moving the ball 27 in the horizontal direction, the engagement position of the ball 27 with the notch 19 can be adjusted.

[Effect of idea]

In the record player according to this invention, when playing, the tone needle is in a first position where it engages with the tone groove on the record, and when not playing, the tone needle is in a second position, which is spaced above the record. The record player is provided with a tone arm that is held, and further includes means for holding the tone arm at a third position preset at a minute height above the record surface, and The tone arm may be held by the holding means in a state where the tone needle in the position is raised to the third position without passing through the second position, and the tone needle in the third position passes through the second position. Because it is constructed so that it can reach the first position without any movement, the user can hold the tone needle at a slight height above the record surface without moving it up or down significantly from the record surface, and then lower it again. , the performance can be resumed from approximately the same place where the performance was interrupted.

[Brief explanation of the drawing]

1 to 3 are partial cross-sectional views of an embodiment of the record player according to this invention with the side plate removed, and FIG. 1 shows the tone arm in the first position, and FIG. In the third position,
FIG. 3 shows the case in the second position. 4: Record disc, 5: Tone arm, 6: Sound needle, 7: Cartridge, 10: Arm push-up rod, 12: Sliding plate, 15: Operation rod, 17, 18:
Positioning plate, 25, 26: Locking plate, 27, 28:
ball.

Claims (1)

[Scope of utility model registration request] The tone arm is provided with a tone arm in which the tone needle is in a first position where it engages with a tone groove on the record when playing, and in which the tone needle is held in a second position away from above the record when not in play. The record player includes means for holding the tone arm at a third position, which is set in advance at a slight height above the record surface, and further, the tone needle at the first position is at the third position. 3rd position without passing through 2nd position
The tone arm can be held by the holding means in a state raised to the position, and the tone needle in the third position can reach the first position without passing through the second position. record player.