JPH01175820A - Automatic delivery controller for sheet paper - Google Patents

Abstract

PURPOSE:To stop completely a motor when a predetermined length of paper is delivered by providing a position detecting means for detecting a position in which the delivery speed of sheet paper is decelerated and a speed change- over means for decelerating the delivery speed of sheet paper by the output signal of said position detecting means. CONSTITUTION:A delivery roller 20 is driven by activating a motor 21 so that a sheet paper 17 is sequentially delivered from a delivery port 23 onto a toilet seat 12 while moving on a movable plate 24. When a first detecting aperture 33 in the sheet paper 17 is detected by a sensor 31, the sensor 31 generates a pulse. Pulses generated from a speed change-over circuit and the gate signal sent to a switching are generated with the interval being expanded and the rotational frequency of motor 21 is reduced to about one third of normal one. When the sensor 31 detects a second detecting aperture 34, the output from the speed change-over circuit 45 is stopped to shut off current to the motor 21. As a result, the second detecting aperture 34 is stopped immediately after it passes on the sensor 31.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a toilet seat that can automatically supply disposable sheet paper to hygienically cover the seat of a Western-style toilet bowl, and particularly relates to a toilet seat that can automatically supply disposable sheet paper that hygienically covers the seat of a Western-style toilet bowl. The present invention relates to a control device that can always dispense a fixed amount of sheet paper when dispensing it onto a toilet seat.

[Conventional technology]

In recent years, many Western-style toilets have come into use in hotels, restaurants, and general households. Since this Western-style toilet is used by sitting on a seat that is attached to the toilet so that it can be raised and lowered, it is desirable that the seat is always hygienic.For this reason, in ordinary households, droplets of sewage etc. may adhere to the toilet, resulting in unsanitary conditions. Toilet seats are often replaced with cloth covers, which are replaced regularly, to prevent the seats from becoming unsanitary. Therefore, attaching a cloth cover to the toilet seat is often used to relieve the feeling of being cold.Conversely, attaching a cloth cover to the toilet seat may make it easier to overlook the adhesion of sewage, and may even worsen unsanitary conditions. Awata. On the other hand, in Western-style toilets installed in public places used by an unspecified number of people, such as hotels, restaurants, and various types of transportation, toilet seat covers are usually not used at all, unlike in ordinary homes. , and the fact that sewage droplets are directly attached to the toilet seat is the same as when a cloth cover is attached, and furthermore, the use of such a toilet seat by an unspecified number of people is a major public health problem. Today, the desire to use Western-style toilets installed in public places in a sanitary manner has increased by 8.

In view of the above problem, recently, as seen in Japanese Utility Model Application No. 60-155399, a sheet paper is dispensed in a fixed amount onto the toilet seat by an electrically driven roller, and the seat is seated on the toilet seat via the sheet paper. A system has been proposed, and its schematic structure will be explained with reference to FIG. 1 is the toilet bowl, 2 is the toilet seat attached to the toilet bowl 1 so that it can be raised and lowered freely, and 3 is the toilet seat.
is a paper holder that holds sheet paper 4 that covers the top surface of toilet seat 2.
is wound into a roll and rotatably stored. 5
1 is a feed-cutting section that feeds the sheet paper 4 fed out from the holder 3 onto the toilet seat 2 and cuts it into a predetermined length.The mounting base 5a has a guide roller 6 and a feed-out section 1 & 11 that pinches and feeds the sheet paper 4. Attach rollers 7a, 7b and cutting blades 8a, 8b for cutting sheet paper 4,
The delivery roller and the cutting blade are individually driven and connected to an electric motor (not shown), and when feeding out the sheet paper 4, the delivery rollers 7a and 7b are driven by the electric motor, and the sheet paper 4 is placed on the toilet seat 2. When the sheet paper has been fed out a predetermined length, this is read, for example, photoelectrically, and the feeding of the sheet paper is stopped.Then, the cutting blade 8a is driven by an electric motor to cut the sheet paper 4.

[Problems to be Solved by the Invention] However, in the sheet paper feeding structure described above, when the sheet paper is fed out by a preset length, the length is photoelectrically detected and fed out. Since the roller is configured to stop driving, the electric motor that drives the delivery roller generally continues to operate even if the power is cut off.
In many cases, it rotates several times or more due to inertia before it actually stops. For this reason, even if the lit feeding position of the sheet paper is detected, the electric motor cannot stop rotating immediately, and the sheet paper is often fed out longer than necessary, making it difficult to accurately feed out the fixed amount of sheet paper. It was difficult to do.

In view of the above-mentioned problems, the present invention reduces the rotational speed of the electric motor for sheet paper feeding just before the sheet paper is fed out a predetermined length, and when the paper is fed out a predetermined length, the rotation speed of the electric motor for feeding sheet paper is reduced. An object of the present invention is to provide an automatic sheet paper feeding control device whose purpose is to completely stop the sheet paper.

[Means for Solving the Problems] The present invention provides a control device that controls a roll of sheet paper to be fed out a predetermined length onto a toilet seat, and a control device that controls the sheet paper to be fed out a predetermined length onto the toilet seat. The present invention includes a position detecting means for detecting a position at which the feeding speed is to be reduced, and a speed switching means for reducing the feeding speed of the sheet paper based on an output signal from the position detecting means.

[Function] When the position detecting means detects the first detection hole drilled in the sheet paper, the present invention switches the speed switching means to reduce the number of output pulses so that the rotation speed of the electric motor becomes sharper than when feeding the sheet paper. Then, when the position detection means detects the second detection hole drilled in the sheet paper, the output of the pulse from the speed switching means is stopped and the operation of the electric motor is stopped, thereby causing the sheet paper to be damaged. The toilet seat is characterized in that it can be accurately extended onto the toilet seat by a preset length.

[Examples] Examples of the present invention will be described below with reference to FIGS. 1 to 10.

In Figures 1 and 2, 11 is a toilet bowl, 12 is a toilet bowl 11
The toilet seat is placed on the top surface of the toilet bowl 11, and the sheet paper automatic feeding device (hereinafter referred to as the feeding device) 13, which is placed on the rear of the top surface of the toilet bowl 11 and forms a U-shape, is provided at both ends of the box body 14 protruding toward the toilet bowl 11 side. Terminal box 14a.

It is attached to the wall of 14b so that it can vibrate freely.

Next, the structure of the supply device 13 will be explained with reference to FIGS. 3 and 4.

15.15 is a support plate pivotally supported on the side wall 16 of the box body 14;
A roll of sheet paper I7 is rotatably mounted on the upper side, and a U-shaped rotating plate 18 is rotatably attached to the lower part via a pivot a. A cushioning material is fixed to one lower end (left side in FIG. 3) of this rotary plate 1B, and a mountain-shaped break protrusion 19 is provided at the other lower end in the width direction of the sheet paper 17. The support plate 15. is provided protrudingly along the support plate 15.
It is biased toward the stopper C provided at 15. Reference numeral 20 denotes a feeding roller, which is driven by a paper feeding electric motor (hereinafter simply referred to as electric motor) 21 installed in one end box 14a. 22 is the feeding roller 20 between the supporting plates 15° and 15°.
The roll-shaped sheet paper 17 is rewound and wound around the pressure roller 22 by a pressure roller provided so as to be able to come into sliding contact with the pressure roller 22, and then held between the feed roller 20 and the feed roller 20.
The sheet paper 17 is delivered to the outlet 2 of the box body 14 by the drive of
Send to the 3rd side. Reference numeral 24 denotes a movable plate that is rotatably attached between the side walls 16 via a pivot pin d between the feed roller 20 and the feed port 23 below the rotary plate 18; A buffer material e of the same type is provided at a position where it can come into contact with and separate from the buffer material e of the movable plate 18, and a plurality of guide rollers 25 are rotatably attached to the lower surface directly below the buffer material e along the axial direction of the movable plate 24. It will be done. Reference numeral 26 denotes a cam member that drives the movable plate 24, and as shown in FIG. The rotating shaft 28 is driven by an electric motor 29 with a braking mechanism installed inside the end box 14a. Note that the movable plate 24 is urged by a spring member wound around the pivot pin d in a direction in which the guide roller 25 always comes into sliding contact with the cam member 26.

In FIG. 3, 30 is a cover that covers the sheet paper 17 of the box body 14, and 31 is a photoelectric sensor, for example, consisting of a light-emitting and light-receiving element, that detects the presence or absence of the sheet paper 17 attached near the feeding roller 20. It is a typical sensor. Also, the 8th
In the sheet paper 17 shown in the figure, 32 is the toilet seat 12.
A punched piece 33° 34 is provided with a portion left uncut corresponding to the opening 12a of the opening 12a, and indicates the first and second detection holes to be detected by the sensor 31, and in this example, the sensor 31 and the first . The second detection holes 33 and 34 constitute position detection means for the sheet paper 17. Reference numeral 35 indicates a perforation cut at each dimension corresponding to the length of one sheet of paper 17 that can be placed on the toilet seat 12.

Furthermore, in FIG. 1, 36 is a power switch, 37 is a paper feed switch, and 38 is a power lamp. Since the power switch 36 is not particularly required during use, it is installed on the end box 14a instead of being provided on the end box 14a. It may also be attached to the back side.

Next, there is a paper automatic feeding control device ff40 (hereinafter referred to as a feeding control device) that can always feed out the sheet paper 17 to a predetermined length and also can reliably set the perforations 35 of the sheet paper 17 at the breaking position. ) will be explained with reference to the electric circuit diagram in FIG. In FIG. 9, 41 is a power supply circuit, which includes a transformer Tr connected to an AC power supply via a power switch 36, a full-wave rectifier circuit DB having an AC input terminal connected to the secondary side of the transformer Tr, and a full-wave rectifier circuit DB connected to an AC input terminal on the secondary side of the transformer Tr. It consists of a diode D connected in series to the DC output terminal of the rectifier circuit DB, and a smoothing capacitor C connected in parallel to the voltage regulator AVR. It is supplied as an operating power source for each circuit described later. 42 is a zero cross detection circuit, which is equipped with a transistor T1 whose emitter is grounded, and whose collector is connected to a resistor R1.
The base is connected to the constant voltage power supply Vcc through the resistor R2.
It is connected to the DC output terminal of the full-wave rectifier circuit DB via. 43 is a counter circuit, and its clock pulse input terminal CP (hereinafter referred to as CP terminal) is connected to the output terminal of the zero cross detection circuit 42 (the collector of the transistor T, and the resistor R,
connection point) and clock enable input terminal C.
E (hereinafter referred to as GE terminal) is connected to an output terminal Q of a flip-flop circuit 44 (hereinafter referred to as FF circuit), which will be described later, and clear input terminal CL is grounded via a capacitor C3. The FF circuit 44 has its clear input terminal CL connected to the other terminal of the paper feeding switch 37, which has one terminal connected to the constant voltage power supply Vcc, via a grounding resistor R1, and also has a clock pulse input terminal. C
P, is connected to the output terminal of the sensor 31.

On the other hand, the output terminals Q, , Q, of the counter circuit 43 are 3
The first speed switching circuit 45 consists of NAND circuits N, -N3. The other input terminal of the NAND circuit N1 is connected to the output terminal Q4 of a slow mode circuit 46, which will be described later, and the other input terminal of the NAND circuit N2 is connected to the input terminals of the second NAND circuit N+ and Nz. It is connected to the output terminal Q4 of the slow mode circuit 46 and the data input terminal of the FF circuit 44 via a NOT circuit N, respectively. And the first of these,
Each output terminal of the second NAND circuit N, , N, is connected to an input terminal of the third NAND circuit N. The above-described slow mode circuit (hereinafter referred to as SN circuit) 46 constitutes a speed switching means in combination with the speed switching circuit 45, and its clock pulse input terminal CP is connected to the CPI terminal of the FF circuit 44, and one side is connected to a constant voltage power supply. It is connected to the output end of the sensor 31 connected to Vcc via a grounding resistor R1. Also, the SN circuit 46
The input terminal of 0 is connected to the output terminal Q of the same circuit 46.
Next, the output terminal of the speed switching circuit 45 described above is connected to the capacitor CI via the resistor R4, and also to the trigger circuit 47. This circuit 47 consists of a photocoupler PC having a light emitting element LE and a light receiving element PE, a transistor T2 whose emitter is grounded, and a transistor T! The base of is connected to the output terminal of the speed switching circuit 45 through the resistor R4, and the collector of the transistor T and the constant voltage power supply ■cc
A light emitting element LE such as a light emitting diode is inserted and connected between the resistor R3 and the like. Furthermore, the switching element Th
A light-receiving element PE made of photosylisk or the like is inserted and connected between the gate and the anode through a resistor R4.

The operation control JR of the electric 8!29 is sequentially controlled by a control device S different from the automatic paper feeding control device 40.

Further, both the FF circuit 44 and the SN circuit 46 use D flip-flops in this embodiment, and furthermore, the output terminal of the sensor 31 is connected to the paper 17 "present" in this embodiment.
If it is, the level is “L”, and if it is “absent”, it is the “H” level.

Next, the operation will be explained.

When feeding out the sheet paper 17, as shown in FIG. 5, the feeding opening 23 is closed by the movable plate 24 to prevent sewage etc. from entering the box body 14, and the sheet paper 17 is fed out. First, turn on the power switch 36 and check whether the power lamp 38 is lit. After checking, turn on the sheet paper feed switch 37. When the switch 37 is turned on, the electric motor 29 is initially activated by a command from the control device S, and at the same time, the control device S controls the CL terminal of the FF circuit 44 so that it does not go to the "H" level. Therefore, while the electric motor 829 is in operation, the paper feeding motor 21 is prevented from starting. When the electric motor 29 is started, the cam member 26 rotates, and the movable plate 24 is moved from the state shown in FIG. 5 to the position shown in FIG.
3 is opened and rotated until it becomes parallel to the paper feed path 48, the electric motor 29 is temporarily stopped by a command from the control device S, and the CL terminal of the FF circuit 44 is set to "H".
raise the level. Note that when the power switch 36 is turned on, the output terminal Q of the FF circuit 44 goes to "H" level and the output terminal Q4 of the SN circuit 46 goes to "H" level by a differentiating circuit (not shown).
Since the output terminal Qt of the FF circuit 44, that is, the CE@ of the counter circuit 43 is set to L'' level,
Since the output terminal of the counter circuit 43 is at "L" level, the output terminal Q or Q of the counter circuit 43 corresponds to the number of pulses of the zero cross signal input from the output terminal of the zero cross detection circuit 42 to the CP terminal of the counter circuit 43. A pulse is output every fixed period. In this example, a decimal counter is used, and when the first pulse is input to the CP input terminal, it is output from the output terminal Q, and when the third pulse is input manually from the output @ Q a, it is output. It is set. Note that the pulses output from the output terminal Q of the counter circuit 43 are not limited to the number of input pulses mentioned above, and can be arbitrarily changed.

However, when the sheet paper 17 is fed out, the output terminal Q4 of the SN circuit 46 is at "L" as described above.

Therefore, one input of the NAND circuit N is set to the II L II level, and one input of the NAND circuit N is set to the "H" level. As a result, there is no output from the NAND circuit N of the speed switching circuit 45, and the second NAND circuit N! Only the counter circuit 43
This output causes the output pulse from the third NAND circuit N3 to rise in phase with the output 0fiQ of the counter circuit 43 and is input to the trigger circuit 47. At the same time, capacitor CI is charged via resistor R1. When the capacitor C1 is charged and reaches the "H" level, the CL terminal of the counter circuit 43 also becomes the "H" level. Therefore, the counter circuit 43 is cleared and the output raQl becomes "L" level, and the output terminal of the speed switching circuit 45 also becomes "L" level, so that the capacitor CI is discharged through the resistor R5, and the output of the counter circuit 43 becomes "L" level. Set the CL terminal to "L level" and connect the output terminal Q again.
.

Outputs pulses from. In this way, by reducing the time constant of the capacitor C1 and the resistor Rs, the C
By alternately repeating the level of the L terminal as "H"←→"L"', the speed switching circuit 45 outputs the first signal.
As shown in FIG. 0, a pulse (see FIG. 10, 45) synchronized with the zero-cross detection signal pulse is output, and is input to the trigger circuit 47. And the trigger circuit 47
Every time a pulse is input to , the photocoupler PC is driven and a gate signal is sent to the gate of the switching element Th to turn on the switching element Th, and the motor 21 is energized with commercial frequency power to start it. 1θ (see Figure 21).

The feeding roller 20 is driven by the activation of the electric motor 21, and the sheet paper 17 held between the feeding roller 2'0 and the pressing roller 22 is movable as shown in FIG. 3 while rewinding the roll of paper. While moving on the plate 24, it is sequentially dispensed onto the toilet seat 12 from the dispensing port 23. Then, when the first detection hole 33 of the sheet paper 17 is detected by the sensor 31, the sensor 31 detects the first detection hole 33 of the sheet paper 17.
outputs a pulse. When a pulse is input to the CP rich terminal of the SN circuit 46, the output terminal Q4 is inverted to "H" level, one input of NAND circuit N+ is "H" level, and one input of NAND circuit N is "H" level. It becomes L″ level (
(See Figure 10, 31.46).

As a result, contrary to the above, only the NAND circuit N1 is operated by the pulse output from the output terminal Q of the counter circuit 43 (the output from the NAND circuit N is L" level), and the output from the NAND circuit N is rises in the same phase as the output from the output terminal Q (see FIG. 10, 45), and the trigger circuit 47
At the same time, the capacitor C1 is charged. Then, a pulse is output from the output terminal Q of the counter circuit 43 in the same manner as described above. The output pulse from the output terminal Qs is output every third pulse that is input to the CP terminal after the CL terminal is set to the "H" level and cleared. Therefore, the pulses output from the speed switching circuit 45 and the gate signal sent to the switching element Th are also output with extended intervals, which is the same as when the frequency of the power supply applied to the motor 21 is lowered, and the rotation speed is reduced to the normal value of about 17 (see FIG. 21).In other words, the electric motor 21 is switched from the conventional continuous operation to the speed of, for example, feeding the film frame by frame.In other words, the sheet paper 1
Decreases the feeding speed of 7.

When the sensor 31 detects the second detection hole 34 of the sheet paper 17 in this state, a pulse is input to the CP terminal of the FF circuit 44, so that the data input terminal of the circuit 44 goes to "H" level. Therefore, the output terminal Q8 becomes "H" level, and the CE terminal of the counter circuit 43 becomes "H" level.
” level. As a result, the output terminal Q of the counter circuit 43.

, Qs immediately becomes "L" level, and the speed switching circuit 45
As a result, the electric motor 21 is connected to the first detection hole 3 of the sheet paper 17.
3 is detected, the rotational speed slows down to a normal speed. Therefore, when the second detection hole 34 is detected, the power is cut off to rotate the feeding roller 22 and feed the paper 17. Since there is not enough torque to output the sensor, it stops immediately after the second detection hole 34 passes over the sensor 31 (the first
(See Figures 31.44 and 45.46). Also, the SN circuit 46
The output terminal of returns to "L" level. That is, the automatic paper feeding control device 40 returns to its initial state. By feeding out the sheet paper 17 in this manner, as shown in FIG. It can be set accurately between the projection 19 and the projection 19.

When the sheet paper 17 is fed out onto the toilet seat 12 as described above, the control device S again detects that the sheet paper 17 has been fed out and starts the electric motor 29 to move the cam member 26 as shown in FIG. is rotated clockwise to move the movable plate 24 to the pivot pin d via the guide roller 25.
Rotate counterclockwise around the center. Movable plate 24
With the rotation of the sheet paper 1 located on the cushioning material e side
7 is lifted up as shown in FIG. 6 and held between the cushioning material e of the movable plate 24 and the cushioning material s of the rotating plate 18. In this state, the movable plate 24 is further rotated by the cam member 26, and the rotary plate 24 is rotated to the sixth position around the axis a.
By pushing clockwise in the figure, the sheet paper 17 is partially pressed by the breaking protrusion 19. And the cam member 26
When the sheet paper 17 rotates close to the position where it rises the most, a large tension is applied to the sheet paper 17 between the feeding roller 20 and the movable plate 24, and at the same time the movable plate 2
4, the rotary plate 18 moves to the movable plate 2.
As a result, the breaking protrusion 19 partially presses the sheet paper 17 strongly, and as a result, the sheet paper 17 is under a large tension, and the perforation 35 near the breaking protrusion 19 Breaking protrusion 2
It cannot withstand the pressing force of 1 and is torn from that part one by one.

Thereby, the sheet paper 17 can be smoothly torn from the perforation 35. After the rupture, the control device S
The electric motor 29 is temporarily stopped by the command, and the sheet paper 17 is movable as shown in FIG.

It can be placed on the toilet seat 12 with the end of the broken part held between the rotating brakes 24 and 18.

The user suspends the punched piece 32 of the sheet paper 17 into the toilet bowl 11, sits down, and relieves himself. In this case, since the sheet paper 17 is held within the box body 14 as described above, it will not move even if the user moves his or her body a little.

When the user leaves the toilet seat 12 after relieving himself or herself, a seating detection means (not shown) detects that the user leaves the seat, and the cam member 26 is rotated by a command from the control device S to start the electric motor 29. , the movable plate 24 is rotated to its original position, that is, in the direction of closing the outlet 23 as shown in FIG. Further, as the movable plate 24 moves toward the original position, the rotating plate 1 also returns to the position where it contacts the stopper C due to the biasing force of the spring. Note that when the user leaves the toilet seat 12, the sheet paper 17 is held within the box body 14, so it does not wrap around the buttocks. However, when the movable plate 24 returns to its original position and comes into contact with the clamp, the force of the flushing water that cleans the inside of the toilet bowl 11 by operating the cleaning device drags the punched piece 32 of the sheet paper 17 into the toilet bowl 11, causing the sheet to sit together with the dirty water. paper 17
discharge.

When the movable plate 24 returns to its original position, the electric motor 29 is stopped by a command from the control device S.

When subsequently dispensing the sheet paper 17, by performing the same operation as described above, the sheet paper I7 of a predetermined length can always be automatically dispensed onto the toilet seat 12.

In this embodiment, the sensor 31 is provided near the delivery roller 20, but the sensor 31 is not limited thereto, and may be provided near the outlet 23 of the box body 14. Further, in this embodiment, an example has been described in which the rotation speed of the electric motor [21] is reduced to the normal number of about 18 or less after the sensor 31 detects the first detection hole 33, but the invention is not limited to this. The rotational speed may be gradually decreased from the point at which deceleration is started.

Furthermore, when applying tension to the sheet paper 17,
If the pressure roller 22 is idling and it becomes difficult to apply tension, attach gears to the respective roller shafts of the pressure and delivery port rollers 22 and 20 so that they mesh with each other, or The pressing roller 22 may be prevented from idling by meshing the gear with a worm provided on the electric motor 21.

[Effect of the Invention J] As explained above, in the present invention, when the sheet paper is fed out onto the toilet seat, it is fed out quickly at first, and after the sensor detects the first detection hole provided in the sheet paper,
The sheet paper is fed out by significantly reducing the feeding speed, and when the second detection hole is detected, the power to the electric motor is cut off to finish feeding the sheet paper to the toilet seat. It is possible to accurately feed out a fixed length of sheet paper without being hindered by the inertia of the electric motor that drives the feeding roller.Moreover, by quantifying the amount of sheet paper fed out, it is possible to The perforations provided in the paper can be set at the position where the sheet paper will be reliably broken, and the work of breaking the sheet paper can be done smoothly and easily.In addition, the electric motor for driving the paper feeding roller is equipped with a special braking means. The structure of the automatic sheet paper feeding device can be simplified.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an automatic sheet paper supply toilet seat equipped with the control device of the present invention, Fig. 2 is a side view, Fig. 3 is a vertical side view of the main parts, Fig. 4 is a longitudinal rear view of the same, and Fig. 5 Figures 7 to 7 are explanatory diagrams for explaining sheet paper feeding and breaking operations, Figure 8 is a perspective view of sheet paper, Figure 9 is an electric circuit diagram of the automatic paper feeding control device, and Figure 10 is an electrical circuit diagram of the control device. A timing chart diagram for explaining the operation, and FIG. 11 is a schematic configuration diagram of a conventional sheet paper automatic feeding toilet seat. 12. Toilet seat, 17. Sheet paper 42. Zero cross detection circuit 43. Counter circuit, 45. Speed switching circuit 46. Slow mode circuit, 47. ) Riga circuit Figure 1 Figure 6 Figure 8

Claims (1)

[Claims] A control device that controls the roll-shaped sheet paper to be fed out a predetermined length onto the toilet seat, and a position detection means that detects a position at which the feeding speed is reduced before the sheet paper is fed out the predetermined length. An automatic sheet paper feeding control device comprising: speed switching means for decelerating sheet paper feeding speed in response to an output signal from the position detection means.