JPS59171075A - Record player - Google Patents

Abstract

PURPOSE:To execute mechanically an end detection even if a rest position is provided in the rear by turning a detecting lever by an end plate, executing an end detection, and thereafter, turning it to an inverted state to detach the end plate from the detecting lever. CONSTITUTION:A pickup plate consisting of an end plate 28, a lead-in plate and a base plate is provided on the upper part of a pickup gear, and the end plate 28 for turning a detecting lever is supported so as to be turnable between a set state which presses with the lever and an inverted state which does not presses with the lever. Also, the end plate 28 turns the detecting lever and an end detection is executed, and thereafter, it is rotated to an inverted state so as to be detached from the detecting lever. In this way, even if an arm rest position is provided in the rear of a turntable, the end detection and a return operation can be executed mechanically.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic performance device for a record player in which the rest position of the tone arm is provided behind the turntable, and its feature is that the detection lever is rotated. The end plate is supported rotatably between a set state in which it contacts the detection lever and an inverted state in which it does not contact, and during lead-out operation, the end plate or the detection lever is rotated and then rotated to the inverted state. By being separated from the detection lever, end detection and return operations can be performed by a purely mechanical mechanism.

Traditionally, commonly used record players have a lid that pivots upwards and the operator's rest position is located on the right side of the turntable, so the player cabinet occupies a large space. Met.

Therefore, in order to make the player cabinet smaller and to be able to stack other audio equipment on top of it, the player cabinet was designed with a front door, and the slide-based player cabinet on which the turntable was placed was designed in the front and rear directions. 2 and the tone arm is movably supported)
(A record player was developed in which the record player was installed at the rear of the turntable.

However, in such a record player, the return direction of the tone arm is the same as the rotational force direction when detecting the end, so if end detection is performed purely mechanically, the detection mechanism will not return after detecting the end. It had the disadvantage of getting in the way.

An object of the present invention is to obtain an automatic playing wave W that can perform end detection and return operations purely mechanically in such a record player.

Embodiments of the invention will be described with reference to the drawings.

Figure 1 is a perspective view showing the external appearance of the PC (player cabinet); Figure (A) shows the stored state, and Figure (B) shows the state with the rotary front door FD open. , Also, the same figure (
3) shows the state in which the slide base SB has been moved to the record loading/unloading position.

The slide base SB is supported so as to be movable in the front and back direction relative to the player cabinet PC, and is moved between the storage position and the record loading/unloading position by a slide base drive mechanism (see Figure 2) equipped with a loading motor LM. Driven back and forth.

Performances can be performed even when the slide base SB is in the storage position and the record loading/unloading position, and all mechanisms are controlled by a button switch provided on the front surface of the slide base SB.

FIG. 2 shows the slide base drive mechanism on the back side (lower side) of the slide base SB.

A gear base 33 is supported by the slide base SB so as to be slightly movable in the front and back direction, and a drive gear 34 driven by a loading motor LM provided on the gear base 33 via a speed reduction mechanism is connected to the player cabinet PC.
It engages with a loading rack 35 provided in the front-rear direction.

An L-shaped loading lever 36 is pivotally supported at its center bent portion on the slide base SB, and a roller 36a provided at one end engages with a retaining groove 37 of the player cabinet, and the other end is engaged with a retaining groove 37 of the player cabinet. Boss 36 protruding from
1] is rotatably engaged with the gear base 33.

The retaining groove 37 provided in the PC (player cabinet) is
The roller 736' of the loading lever 36 consists of a straight line extending in the front-rear direction and recesses 37a and 37b bent in opposite directions at the rear and front ends thereof, respectively.
When a is in the straight line portion of the engagement groove, the slide base SB can move, and the roller 36a is in the recessed portion 37.
When the slide base SB enters the position a or 37b, the slide base SB is locked.

The slide base SB is provided with an attachment/detachment position detection switch SW2 and a storage position detection switch SW3 at intervals when the gear base 33 moves. When the roller 36a enters the recess 37b or 37a of the engagement groove 37) Gear base 330 contact piece 3
3a presses these switches "1".

An abutment pin 38a and a pressing portion 38b are protruded from an elevation lever 38 whose one end is pivotally supported by the slide base SB, and the abutment pin 38a abuts a cam 331 provided on the gear base 3.3. , pressing portion 381] is in contact with the end of the elevation plate 3, which is slidably supported in the left-right direction by the sub-panel 1 (see FIG. 4) of the slide base SB.

The elevation plate 3 is linked to an elevation cam 7 (see FIG. 7) that raises the tone arm, so that when the elevation plate 3 moves to the right, the tone arm rises.

Figure 3 is an explanatory diagram of the operation of the slide base drive mechanism. Figure (A) shows the slide base in the storage position, Figure (B) shows it in the middle of movement, and Figure (C) shows the slide base in the storage position, and Figure (C) shows the slide base in the storage position. This figure shows the respective states at the attachment/detachment position.

To explain the operation, when the loading motor LM is started in the storage position (A), the loading lever 36 rotates clockwise while the slide base SB remains stopped at first, and the roller 36a moves from the recess 37a of the engagement groove. While moving to the straight part, only the gear base 33 moves forward a little, and the elevation lever 38 is rotated clockwise by the protrusion of the cam 33b of the gear base 33, moving the elevation plate 3 to the right and raising the sassetonin arm. .

When the roller 362 moves to the straight portion of the engagement groove 37, the loading lever 36 is prevented from rotating clockwise.
As shown in FIG. 3B, the slide base SB and the gear base 33 move forward as one.

When the slide base SB reaches the record loading/unloading position (c), the lower error 36a collides with the front end of the engagement groove 37 and is prevented from moving forward, and when only the gear base 33 moves further, the loading lever 36 rotates clockwise. The roller 36a then enters the recess 37 of the engagement groove, and the abutment piece 33a of the gear base presses the attachment/detachment position detection switch SW2, and the loading motor LM is stopped.

At this time (when only gear base 33 moves forward) gear 3
31] moves to the front of the abutment pin 38a of the elevation lever 38, the work 1/lever 38 rotates counterclockwise, and the three elevation plates move to the left. The arm descends.

When the slide base SB moves from the record loading/unloading position (c) to the storage position (a), the tone arm is raised first, then the slide base moves back and stops at the storage position. The tone arm is lowered and at the same time the storage position detection switch SW3 is pressed and the loading motor LM is stopped.

Figure 4 shows the tone arm drive mechanism.
All tone arm drive mechanisms are provided in a sub-panel 1 supported by a slide base SB via an insulator.

The main components of the tone arm drive mechanism are: a main cam 2 that engages appropriately with a pinion 21 provided on the turntable shaft; a drive plate 4 that engages with a cam groove provided on the back surface of the main cam and moves from side to side; a sub-gear 5 that meshes with the rack, a pickup gear 6 that meshes with the sub-gear, and a switch lever 12 that controls these operations;
It consists of a control board 8, a record presence/absence discrimination board 19, a detection lever 17, etc.

FIG. 5 shows a mechanism for transmitting driving force to the tone arm', and the state shown in the figure is when the main cam 2 has started and the drive plate 4 has moved slightly to the right.

A )-shaped cam groove 2a is provided on the back surface of the main cam 2, and the drive pin 4a of the drive plate 4 supported so as to be movable in the left-right direction engages with the cam groove 2a, and every time the main cam 2 rotates once. The drive plate 4 is first reciprocated to the right and then to the left.

A small diameter gear of a sub gear 5 integrally provided with two large and small semicircular gears meshes with a rack 4b formed on a drive plate 4, and its large diameter gear meshes with a pickup gear 6.

The lead-in latch 13, which is rotatably supported on the upper surface of the pickup gear 6, is click-motioned to the second position by a latch spring 27 pressed against its base, and the protrusion 6a of the pickup gear and the lead-in latch 1'3 are connected to each other. The tone arm is appropriately clamped and driven to lead-in or lead-out the tone arm (see FIG. 10).

FIG. 6 is a perspective view and a partial side view of the tone arm elevation mechanism, and FIG. 7 is a plan view for explaining its operation.

An arcuate cam portion 7c having a slope is formed on the upper surface of the elevation cam 7 which is rotatably supported coaxially with the sub gear 5, and the lower end of the arm elevation support shaft 103 disposed on the lower side of the tone arm. portion comes into contact with the cam portion 7c, and the arm elevation moves up and down due to the rotation of the elevator shore cam 7, raising or lowering the tone arm.

The elevation cam 7 is always biased clockwise by a spring provided between the sub gears 5 and 5.
Further, a pin 5b protruding from the sub-gear 5 freely penetrates the arcuate groove q of the elevation cam 7, thereby restricting relative rotation between the two.

Bins 7a and 7b are installed at the ends of the two arms protruding from the outer periphery of the elevation cam 7, respectively.The bin 7a is located at the right end of the elevation plate 3, and the bin 7b is located behind the manual cam V-1-1020. As shown in FIG. Dynamic shear arm elevation shaft 103 (￥
(in other words, the tone arm).

FIG. 8 shows a plan view and a front view of the pickup plate provided above the pickup gear 6.

The pickup plate also includes three layers (in order from the top), an end plate 28, a lead-in plate 29, and a base plate 30, which are coaxially provided so as to be rotatable with respect to each other.

Base plate 3 fixed to the tone arm horizontal rotation axis
A lead-in plate 29 is connected to the lead-in plate 29 via a spring 32, and the relative position of both can be adjusted by an eccentric cam 30a provided on the base plate 30 and abutting the lead-in plate. The lowering position can be finely adjusted.

A tone arm drive bin 29a, which is appropriately held by the lead-in latch 13 of the pickup gear 6, is protruded from the lower surface of the lead-in plate 29, and an index/custom cam 15 (see FIG. 11) is provided at the tip of the arm. A retaining end 29 that comes into contact with (see) the lead-in position of the 1-ndem
b is formed.

At the tip of the other arm of the lead-in plate.

A retaining end 2 that engages with the switch lever 12 to prohibit lead-in and reset the switch lever when returning.
9c is formed.

An end plate 28 is connected to the lead-in plate 29 via a click spring 31, and the end plate 28 is connected to a stopper 29 provided on the lead-in plate.
A click motion is made between the two positions that contact the eccentric cam 29e for adjusting the end position.

A pin 28a is provided protruding from the upper surface of the end plate 28, and when the tone arm approaches the lead-out groove, the pin 28a contacts the detection lever 17 and rotates to start the lead-out operation.

Figure 9 shows the state in which the end plays 1 and 28 have been moved to the above-mentioned position 2. Figure (a) shows the set state of end detection standby, and figure (b) shows the inverted state. Each state is shown.

When the pickup plate rotates counterclockwise during lead-in, the end plate 28 rotates as the bin 28a comes into contact with a reset wall 101 protruding from the top plate, and is in a set state. In this case, it comes into contact with the detection lever 17 and rotates, then rotates to the reversed state and leaves the detection lever.

FIG. 10 shows the locking operation between the glue-in latch and the 1/- tone drive pin when the tone arm is brought into line.

To briefly explain its operation, the pin 13a protruding from the bottom surface of the tip of the lead-in latch 13 is connected to the sub panel 1.
When the pickup gear 6 rotates clockwise (a), the pin 3 a comes into contact with the end of the guide window IC and is inverted). →(c) 1--' of the lead-in plate 29, connect the arm drive bin 29a to the protrusion 6a and the lead-in latch 1.
3.

Next, when the pickup gear 6 is reversed (if a record is placed on the turntable), the tone arm drive bin 29a is rotated and the tone arm rotates toward you, and is at the lead-in position. Lead in plate 2
When the pick-up gear 6 rotates further (see FIG. 11), the lead-in latch 13 rotates clockwise to release the l-ndem drive bin (e).

Figure 11 shows 5. This figure shows the tone arm lowering positioning mechanism.

An index cam i5 having small-diameter and large-diameter engagement surfaces 15a and 15b'g with which the engagement end 29b of the lead-in plate 29 comes into contact is rotatably supported by the sub-panel, and is provided at the tip of its arm. The roller 15C faces the outer periphery of the turntable 23.

The outer diameter of the turntable 23 is set to be slightly smaller than the outer diameter of the turntable 23, as shown in the same figure (b).
When an LP disc is placed on the turntable 23, the roller 15c comes into contact with the outer circumference of the LP m, causing the index cam 1-5 to rotate slightly counterclockwise, thereby securing the lead-in plate 29.

When the end 291] rotates, it comes into contact with the small diameter engagement surface 15a.
″´ru.

Moreover, when the turntable 23JzKEP board is placed, as shown in the same figure (c), the index cam 15 does not rotate and the lead impression! 1.Engaging end 291]
A reset plate 14 is provided coaxially with the index cam 15, and is always urged clockwise by a spring 14a. -+ Fray 1/14
The index cam 15 is reset when the reset plate 14 is pressed by the protrusion 5b of the sub gear 5 and rotated counterclockwise.

FIG. 12 shows the main cam starting mechanism.

A signal plate 25 and a starting plate 26 are coaxially provided facing the missing tooth portion of the partially toothed gear formed on the outer periphery of the main cam 2. When the detection lever 17 is rotated in the direction of the arrow, the starting plate 26 is
is pushed out to the toothless portion and comes into contact with the engagement protrusion of the pinion 21.

The switch lever 12 engages a long hole 122 in the center with a pin 1d protruding from the sub-panel 1, is supported so as to be rotatable and movable in the left and right directions, and operates the phono motor switch SW1.

The switch lever 12b is urged rightward in the figure by the spring 11, and in the stopped state shown in FIG.
9 engages with the retaining end 29c, and the protruding piece 1 at the front end thereof
The tip of the start plate 16 comes into contact with the right side of 2C, suppressing the phono motor switch SW and keeping it off.

The start plate 16 is a leaf spring 16 that pushes the detection lever 17.
a, whose elongated hole 161) engages with the pin 4a of the drive plate 4 and is supported so as to be rotatable and movable in the left and right directions. It is biased towards

Now, when the start key 24 is pressed in the stopped state shown in FIG. The tip abuts the detection lever 17 and rotates it counterclockwise, causing the start plate 26 to protrude into the toothless portion of the intercom 2 via the signal plate 25.

When the start plate 16 rotates counterclockwise, its tip comes off the side surface of the protruding piece 12C of the switch lever 12, and the switch lever 12 rotates counterclockwise using the engagement end 29c' of the lead-in plate 29 and the fulcrum. Move the phono motor switch SW to start the phono motor and lock the start plate 16 at the lower end of the protrusion 12c in the state shown in the figure.
Make sure to keep pressing the collar 17.

FIG. 13 shows a presence/absence determination mechanism that determines whether or not tone arm mounting is to be performed depending on the presence or absence of a record on the turntable.

An L-shaped operating lever 10 having pins 10a and 10b at both ends is rotatably supported by the drive plate 4 at its bent portion and biased counterclockwise by a spring.

A reset member 18 and a record presence/absence discrimination plate 19 are rotatably supported on the sub-panel 1, and both are biased clockwise by a spring stretched between them.

The reset member 18 includes a pin 18a that engages with the cam surface 19bK of the record presence/absence discrimination plate 19, a drawing contact portion 18b that contacts the pin 10a of the operating lever 10, and a pin 18C that engages with the cam surface 41 of the drive plate 4. Each is provided.

The record presence/absence determination plate 19 is provided with an engaging surface 19a that is in contact with the engaging end 20a of the record sensor 20 and a cam surface 19b that is in contact with the pin 18a of the reset member 18, and the state shown in FIG. At the rear end 19c
is in contact with a pin 4e provided on the drive plate 4 and is held in the position shown in the figure.

The shape of the cam surface 19b consists of an inclined surface and two steps formed at both ends thereof.

A record sensor 20 is swingably supported in a through hole formed in the turntable, and when a record is placed on the turntable, the record sensor 20 swings due to the weight of the record to protect it. The mating end 20a protrudes from the bottom surface of the turntable.

Next, its operation will be explained.

In the state shown in the figure (a), the main cam 2 starts and the drive plate 4
When the record detection plate 19 starts to move to the right, as shown in FIG.
It moves to a position where it can come into contact with the engaging end 20a of.

When the drive plate 4 moves further to the right, the pin 18C of the reset member 18 touches the cam surface 4, as shown in FIG.
When the reset member 18 reaches the inclined part b, the reset member 18 rotates clockwise, but the pin 18a touches the record presence/absence determination plate 1.
9 engages with the stepped portion of the cam surface 19b, and the reset section old 18 and the record presence/absence discrimination plate 19 are stopped at the position shown in FIG.

However, when a record is placed on the turntable, the retaining end 20a of the record sensor 20 protrudes to the bottom surface of the turntable and rotates, causing the record presence/absence discrimination plate 19 to rotate as shown in the figure. The pin 1' of the reset member 18 is rotated counterclockwise while coming into contact with the engagement surface 19a.
8a rapidly moves along the inclined surface of the cam surface 19I) by the biasing force of the spring, and its contact portion 18b moves to a position where it does not contact the pin 10a of the operating lever 10.

Then, when the drive plate 4 moves further to the right, '1. The pin 10b of the actuation actuation-10 contacts the main fl/bar 12 and rotates it counterclockwise, which causes the engagement portion 29C of the lead implant 29 to come off from the retention portion 2b at its rear end. - The mode is ready for lead-in.

Furthermore, when no record is placed on the turntable, the retaining end 20a of the record sensor -20 does not protrude to the bottom surface of the turntable, so the record presence/absence discrimination plate 19 and the reset member 18 do not move. When the drive plate 4 further moves to the right, the pin 10a of the actuating lever 10 contacts the abutting portion 18b of the reset member 18 and rotates clockwise, as shown in FIG. that pin 1
0b moves to a position where it does not contact the switch lever ~12.

Therefore, the engaging portion 29C of the lead-in plate 29 cannot rotate while being engaged with the retaining portion 2b of the switch lever 12, and lead-in of the tone arm is prohibited.

Figure 14 is a diagram for explaining the return operation and repeat operation.
shows the state at the time of return, and (c) shows the state at the time of repeat.

The control board 8 is supported by the sub-panel 1 so as to be movable in the front-rear direction (up-down direction in the figure), and is on the right side in the performance state shown in FIG.

The extending engaging portion 3b engages with the protrusion 5a of the sub gear 5 and is stopped at the position shown in the figure.

A hook 8C is attached to the tip of an arm rotatably supported at the rear end of the control plate 8 and biased clockwise by a spring.
is provided, and the protrusion 5 of the sub gear 5 is provided during the lead-in operation.
The hook 8C of the tokiko with which a is retracted engages with the engaging portion 12d of the switch lever 12 and prevents the control plate 8 from moving forward.

Next, to explain the return operation, when the tone arm approaches the lead-out groove of the record after the performance, the end pin 28a (see Fig. 9) of the end plate 28 is detected by the detection lens. 17, the main cam 2 is started, the drive plate 4 moves to the right, and the sub gear 5 and pickup gear 6 begin to rotate.

Then, as shown in Figure (b), the protrusion 5a of the sub gear 5 retreats, the control plate 8 moves forward, and when the drive plate 4 further moves to the right, the pin 10a of the actuating lever 10 hits. It contacts the contact surface 8a and rotates, and the pin 10) moves to a position where it does not contact the switch lever 12.

At the same time, the pickup gear 6 is connected to the lead-in plate 29.
rotate clockwise while pushing away the switch lever 12 with the engaging end 29c of the tone arm, and push the tone arm drive pin 29a with the protrusion 6a to return the tone arm to the return position.
Next, when the pickup gear 6 is reversed, the retaining end 29
c engages with the engaging portion 12b of the switch lever 12 to lock the tone arm.

To perform repeat performance, press the repeat key (not shown) provided on the front of the slide base SB, and the control plate 8 will be held at the rear position as shown in FIG. When the drive plate 4 moves to the right, the pin 10a of the operating lever 10 does not contact the control plate 8, and the pin 10b contacts the switch lever 12, causing it to rotate in the opposite direction, and then the drive plate 4 The hook 8C of the sharpening control plate 8 that has moved to the left is connected to the engaging portion 12d.
Since the retaining end 29C of the lead-in plate 29 engages with the switch lever 12 to hold the switch lever 12 in the position shown in the figure, the tone arm is lead-in without the retaining end 29C of the lead-in plate 29 engaging with the switch lever 12.

FIG. 15 is a block diagram of the control circuit.
Figure (a) shows the slide base in the storage position.
Moreover, the same figure (b) shows the state in which the record disc is installed and removed.

A so-called button-button loading switch SW4 is provided on the front surface of the slide base SB.
Each time you press the button, the movable contact alternates between (a) and (b) in the same figure.
It can be switched to the position shown in 9.

The attachment/detachment position detection switch SW2 and storage position detection switch 5W3 (see FIG. 2) are break-type limit switches, and when the slide base SB reaches the record installation/detachment position or the storage position (as already mentioned), the gear base 33 When the contact piece 33a moves a little further, υ
Press operation is performed.

Now, when loading switch SW4 is pressed in the storage position shown in Figure B), its movable contact will move to the opposite side (Figure B).
When the base ride base SB moves forward and reaches the record loading/unloading position, power is supplied to the loading motor LM through the loading/unloading position detection switch SW2. ), when the attachment/detachment position detection switch Q W2 iZ opens, the loading motor LM stops.

Also, in the state shown in the same figure (b), load switch SW4
9 to the opposite side, the storage position detection switch SW3
Since the rotation motor LM rotates in the opposite direction to the above case, the sliding base S
When B moves to the storage position, the storage position detection switch S
W3 opens and stops, resulting in the state shown in FIG.

Performances can be performed whether the slide base SB is in the storage position or in the record loading/unloading position, and if the slide base SB is moved during a performance, it can be moved in either direction as described above. ) First, the tone arm rises, then the slide base moves, and after stopping, the tone arm descends to the same position and continues playing.

As explained above, the record player of this invention is
An end plate that rotates the detection lever is rotatably supported between a set state in which it contacts the detection lever and an inverted state in which it does not contact, and the end plate rotates the detection lever to perform end detection and then reverse. Although the arm V-strike position is located at the rear of the turntable, end detection and return movement can be performed by a purely mechanical and simple mechanism. It is possible to perform W.

[Brief explanation of the drawing]

Fig. 1: A perspective view of a record player according to an embodiment of the present invention Fig. 2: A plan view of the slide base drive mechanism Fig. 3:
・Explanatory diagram of its operation Figure 4 ・Plane view of the Ndem drive mechanism Figure 5 ・・
- Plan view of the mechanism that transmits the driving force to the tone arm Figure 26... Perspective view and side view of the tone arm elevation mechanism Figure 7... Explanation of its operation Figure 8... Plan view of the pickup plate and front view Fig. 9...An explanatory diagram of the operation of the end plate Fig. 10...An explanatory diagram of the operation of the lead-in latch Fig. 11...
・Explanatory diagram of the operation of the tone arm lowering positioning mechanism Figure 12...Explanatory diagram of the operation of the main cam starting mechanism Figure 13
Fig. 14: An explanatory diagram of the operation of the record disc presence/absence determination mechanism. Fig. 14: An explanatory diagram of the return operation and repeat operation. Fig. 15: Control circuit diagram.・・Detection lever 28・・End plate 7to 28a・・Pin 29・・Lead imp L/−) 31・・Click Spring agent Patent attorney Makoto Oka − 3rd part (A) (B) 457‐ No. Figure 3) Figure 4 12 Figure 5 Figure 6 (A) (B) 7th (I (A) (B)\210
3 V' Stop 458- B I,, fR (A), b ('''') 30 /S O Figure 11 (B) 29b,... Figure 12 (A) ゛21 Figure 12 (B) Figure 13 (A) Also 0a Figure 13 (B) 9Q Figure 13 I) Figure 13 Figure 13 Figure 14 (A) Figure 14 (B) ゛Figure 14 I) Good B) (B) Procedural amendment (formula July 2, 1980; Kazuo Wakasugi, Commissioner of the Japanese Patent Office, 1, Indication of the case, Patent Application No. 44506, filed in 1982, 2, Name of the invention, record player 3, Amendment) Relationship with the case of a person who is involved in a patent application Patent applicant address: 1-4-1 Meguro, Meguro-ku, Tokyo Name (
501) Pioneer Co., Ltd. Representative: Seiya Matsumoto 4, Agent address: Toranomon Garden 202-462, Toranomon 3-10-4, Minato-ku, Tokyo

Claims (1)

[Scope of Claims] (a) A tone arm that has a pickup plate that rotates integrally with the tone arm rotation axis and that is installed at the rear of the turntable and that rotates between the K) position and the performance position; (b) A main cam that has a toothless gear and rotates once when activated by the rotation of the detection lever; and (c) A main cam that is driven by the main cam and moves back and forth to fan the pickup plate as needed to lead in the tone arm. and a drive plate to be led out, and (2) a drive plate rotatably supported by the pickup plate 1, which is driven by a click spring between a set state in which it contacts the detection lever when the pickup plate rotates and an inverted state in which it does not contact the detection lever. The end plate is equipped with an end plate that rotates in reverse, and during lead-in operation, the end plate is rotated to the set state, and during lead-out operation, the end plate rotates the detection lever and then rotates to the reverse state. 1. A reflex dob 1/-ya characterized in that it moves to move away from a detection lever.