JP3475813B2 - Elevating clothes dryer - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting and lowering apparatus.

[0002]

2. Description of the Related Art Conventionally, a motor is stored in a storage box that is attached to an opening in the ceiling and opens downwards.
2. Description of the Related Art An elevating and lowering clothes drying device is known in which a wire for suspending a clothesline is connected to a rotary shaft of a motor via a pulley, and the motor winds or lowers the wire to elevate the clothesline up and down.

Here, conventionally, a pulley mounting base to which a pulley is mounted is formed in a downward U-shape with a downward opening. The upper part of the pulley mounting base is mounted on the top plate of the storage box, and the pulley mounting base is mounted. The pulley shaft is supported in the shaft holes on both side walls, but the lower part of the downward U-shaped pulley mounting base is open, so both side walls of the pulley mounting base are deformed in the expanding direction. In particular, when the pulley mounting base is made thin to reduce its weight, its strength decreases and it easily spreads. In this case, the gap between the pulley and the inner wall of the side wall of the pulley mounting base and the pulley is large. When the wire is loosened, there is a problem that when the wire is loosened, the wire gets into the gap and is caught by the wire, so that the clothes rod cannot be moved up and down.

Recently, a limit switch for detecting wire slack is attached to the outside of the side wall of the pulley mounting base with a screw tool, and a shaft hole in the side wall of the pulley mounting base on which the pulley shaft is mounted is elongated. So that when the wire is tensioned, the pulley shaft slides to one end side in the longitudinal direction of the shaft hole, and when the wire loosens, the pulley shaft slides to the other end side of the shaft hole. When the pulley shaft is slid to the other end side of the shaft hole, this is detected by the limit switch.

However, in this case, when the limit switch is fixed to the side wall of the pulley mounting base with the screw tool, the tip portion of the screw tool penetrates the side wall of the pulley mounting base and projects inward to hit the pulley. There is. Therefore, in the past, the size of the pulley was used to mount the screw tool away from the pulley shaft, and an intermediate member was interposed between the pulley shaft and the limit switch actuator to allow the movement of the pulley shaft when the wire loosened. The intermediate member is moved in conjunction with the movement of the intermediate member, and the movement of the intermediate member is detected by the limit switch. Therefore, conventionally, there has been a problem that the number of parts of the slack detecting means increases and the structure becomes complicated.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object thereof is to prevent a gap from being formed between the inner surface of the side wall of the pulley mounting base and the pulley. Therefore, the wire can be reliably prevented from being pinched, and the limit switch for detecting wire slackness is fixed close to the pulley shaft with a screw tool, but interference between the screw tool and the pulley can be avoided, and the number of parts can be reduced. An object is to provide a lifting and lowering device which can be reduced in number to simplify the structure.

[0007]

In order to solve the above problems, the present invention relates to a wire for suspending a clothesline 9 by housing a motor 4 in a storage box 2 which is attached to an opening of a ceiling and which opens downward. 11 is connected to the rotating shaft of the motor 4 via the pulley 33, and the wire 4 is connected by the motor 4.
In an elevating and lowering device for hoisting or lowering the clothes bar to elevate the clothes rod 9 up and down, a wire 11 is placed inside a pulley attachment base 40 formed in a substantially upward U-shape.
A long hole shape for accommodating the pulley 33 around which the pulley 33 is wound, and for attaching the pulley shaft 41 to the side wall 40a of the pulley mounting base 40 so as to be slidable in the direction D for applying tension to the wire 11 and the direction E opposite thereto. Tension spring 4 for pulling the shaft hole 42 and the pulley shaft 41 in the direction E opposite to the direction D in which the wire 11 is tensioned.
3 and a limit switch 44 for detecting wire slack is provided on the outside of the side wall 40a of the pulley mounting base 40 with the screw tool 4
5 is fixed to the side surface 33a of the pulley 33 facing the inner surface of the side wall 40a of the pulley mounting base 40, and the screw member 45 is attached.
An insertion recess 46 for inserting the protruding tip portion 45a into the inside of the side wall 40a of the above, the above-mentioned limit switch 44 applies a certain tension or more to the wire 11 so that the pulley shaft 41 resists the tension spring 43. When the pulley shaft 41 contacts the actuator 47 when it slides to the one end side in the longitudinal direction of the shaft hole 42, and the wire 11 is not tensioned more than a certain amount, the pulley shaft 41
Is fixed to the pulley mounting base 40 so that the pulley shaft 41 is separated from the actuator 47 when the tension spring 43 slides to the other end B in the longitudinal direction of the shaft hole 42. By configuring, a pulley mounting base 4 formed in a substantially upward U-shape
Since the lower portions of both side walls 40a of No. 0 do not spread to the outside and therefore the gap between the pulley attachment base 40 and the pulley 33 does not spread, the wire 11 is caught in the gap even when the wire 11 is loosened. The problem that the lifting and lowering operation of the clothes-drying rod 9 cannot be performed once does not occur. Moreover,
Since the tip end portion 45a of the screw tool 45 protruding inside the pulley attachment base 40 is inserted into the insertion recess 46 formed in the side surface portion 33a of the pulley 33, the pulley attachment base 4
Although the limit switch 44 is fixed to 0 by the screw tool 45, the screw tool 45 can be prevented from hitting the pulley 33. Therefore, the limit switch 44 is brought close to the pulley shaft 41 and the actuator 47 is directly connected to the pulley shaft 41. It becomes possible to detect the slack of the wire 11 by making contact with the wire 11, and it is not necessary to interpose an intermediate member between the pulley shaft 41 and the actuator 47 of the limit switch 44 as in the conventional case.

A flange 48 is horizontally projected from the opening end of the upper part of the above-mentioned substantially U-shaped pulley mounting base 40, and the flange 48 is provided on the top plate 3 of the storage box 2.
It is preferable that the pulley mounting base 40 is mounted on the both side walls 40a of the pulley mounting base 40 formed in a substantially upward U-shape.
The top plate 3 can prevent the upper part of the from spreading outward.

Further, it is preferable that a part of the bottom wall 49 of the pulley mounting base 40 having an approximately U-shape is cut out to form a cutout hole 50 through which the wire 11 is passed.
The wire 11 can be passed through the cutout hole 50 formed by cutting out a part of the bottom wall 49 while preventing the both side walls 40a from spreading outward by the bottom wall 49.

Further, a part of the front opening 51 on the side where the wire 11 is introduced and the rear opening 52 on the opposite side of the substantially U-shaped pulley mounting base 40 are bent to form a wire 11.
It is preferable to form a pad plate 53 for preventing wheel derailment. In this case, the pad plate 53 serves as a guide when the wire 11 is wound around the pulley 33, and after passing the wire 11, the wire plate 11 is pulled by the pad plate 53. It is possible to prevent derailment from 33, and it is particularly effective to prevent derailment when the wire 11 is loosened.

Further, a notch 54 for exposing a part of the pulley 33 to the outside is provided in a part of the front opening 51 on the side where the wire 11 is introduced of the pulley mounting base 40 having the substantially U-shape. It is preferable to provide a pulley mounting base 4 when the wire 11 is passed through the pulley 33.
Insert the fingers through the notches 54 on both sides of the 0
By pulling and pulling toward the front, the work of passing the wire 11 through the pulley 33 in the pulley mounting base 40 becomes easy, and the notch portion 54 increases the handheld area, so that the spring force of the tension spring 43 is resisted. You can easily pull out the pulley 33 with your finger.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the embodiments of the present invention will be described. As shown in FIGS. 4 and 5, this lifting and lowering apparatus 1 is a storage box 2 which is attached to an opening portion of a ceiling and has a downward opening. A drive unit 5 having a DC motor 4 as a drive source, a control unit for controlling the drive unit 5, and a DC motor 4
And a transformer 10 for supplying a direct current to each of them are housed therein, and a wire 11 for suspending a clothesline 9 is wound up by a drive unit 5 and can be wound down and moved up and down.

As shown in FIG. 4, the top plate 3 of the storage box 2 is formed in a rectangular shape in plan view, and the drive unit 5 is stored on the lower surface of the top plate 3 along the longitudinal direction A thereof. The drive unit case 6, the transformer 10 and the control unit case 8 are attached respectively.

As shown in FIG. 7, the drive unit case 6 is integrally formed with a motor chamber 23 for accommodating the DC motor 4 and a gear chamber 24 for accommodating the reduction gear 25. A worm gear 27 is attached to the rotary shaft 26 of the DC motor 4.
Is pressed into the worm gear 27.
It is rotatably supported by the drive unit case 6 by 8.
In this example, the reduction gear 25 includes a worm wheel 29 that meshes with the worm gear 27, an intermediate gear 31 that meshes with the worm wheel 29, and a final gear 30 that meshes with the intermediate gear 31. Rotating drum 3 for winding up and down the wire 11 shown
2 are connected, and the rotational force of the DC motor 4 is reduced by the reduction gear 25 and transmitted to the rotary drum 32.

The rotating drum 32 is provided with one end of each of two right and left wires 11 for suspending the clothesline 9. The other ends of the wires 11 are hung downward via pulleys 33 attached to both ends in the longitudinal direction of the storage box 2, and the ends of the clothesline 9 are suspended and supported by the lower ends of the wires 11. . In this example, the vertical load (indicated by the arrow a in FIG. 7) applied to the wire 11 acts in the counterclockwise direction b of the rotating drum 32,
Therefore, the worm wheel 29 also acts in the same direction as in (b), so that the worm gear 27 is pressed in the direction c in which the worm gear 27 is press-fitted into the rotating shaft 26 of the DC motor 4. At this time, the direction (c) of the load applied to the worm gear 27 coincides with the direction in which the worm gear 27 is press-fitted into the rotary shaft 26 of the DC motor 4, so that the worm gear 27 is simply press-fitted into the rotary shaft 26. Two
7 has a structure in which it does not come off the rotating shaft 26.

In this example, as shown in FIG. 8B, the worm gear 27 has a larger inner diameter a on both sides than the middle inner diameter b and an outer diameter on both sides than the middle outer diameter c. d
Is formed in a substantially tubular shape with a reduced size. in this way,
Since the relations of a> b and c> d are satisfied, the tip of the rotary shaft 26 can be easily press-fitted in the middle of the worm gear 27. Figure 8
D in (b) indicates the press-fitting range of the worm gear 27. Further, the outer peripheral end of the worm gear 27 has a bearing portion 28.
The receiving portion 34 is supported by the receiving portion 34.
This prevents eccentric rotation of the worm gear 27. Further, by providing the receiving portions 34 having the same length at both ends of the worm gear 27, the worm gear 27 can be used in either the left or right direction. In the figure, reference numeral 21 is a remote control light receiving portion, and 22 is a light receiving substrate.

On the other hand, the control unit case 8 for accommodating the control unit is formed in a flat shape as shown in FIGS. A screw hole portion 35 (FIG. 5) fixed to the top plate 3 is provided. In the control unit case 8, the flat control unit case 8 is oriented vertically so that the surface on which the screw hole portion 35 is provided faces upward, and the side surface of the control unit case 8 is the longitudinal direction of the top plate 3. It is attached to the top plate 3 so as to be located on a straight line connecting the drive unit case 6 and the transformer 10 in the state facing the direction A. At this time, the engagement portion 12 is provided on the upper surface of the control unit case 8 so as to project laterally, and when the control unit case 8 is attached to the top plate 3, the engagement portion 12 is provided.
By hooking on the upper end surface of the drive unit case 6, the flat control unit case 8 can be stably attached to the drive unit case 6. In addition, 35 in FIG.
Reference symbol a denotes a screw mounting portion on the top plate 3 provided on the upper surface of the drive unit case 6, and 90 and 91 in FIG. 4 are fitting concaves and convexes for laterally positioning the drive unit case 6 and the control unit case 8. It is a department.

Pulley mounting bases 40 are attached to both ends of the top plate 3 in the longitudinal direction. Both pulley mounting bases 40 have the same structure, and each is formed in a substantially upward U shape. Inside the pulley mounting base 40, as shown in FIGS.
3 is stored. Further, on both side walls 40a of the pulley mounting base 40, there are respectively provided long hole-shaped shaft holes 42 for mounting the pulley shaft 41 so as to be slidable in a direction D for applying tension to the wire 11 and a direction E opposite thereto. Tension springs 43 for pulling the pulley shaft 41 in the direction of arrow E in FIG. 1 are provided outside the side walls 40a of the pulley mounting base 40. In this example, one end of each of the two tension springs 43 is supported by a spring support portion 60 that projects from the outside of each side wall 40a of the pulley mounting base 40, and the other end of each tension spring 43 extends outward from the shaft hole 42. It is supported by both ends of the protruding pulley shaft 41.

One side wall 40a of the pulley mounting base 40
A limit switch 44 for detecting wire slack is fixed to the outside of the with a screw tool 45. The screw tool 45 is the side wall 40.
and the tip portion 45a of the pulley mounting base 4
It projects inside 0.

On the other hand, the side wall 40a of the pulley mounting base 40
The side surface portion 33a of the pulley 33, which faces the inner surface, has a structure shown in FIG.
As shown in (b), an insertion recess 46 for inserting the tip portion 45a protruding inside the side wall 40a of the screw tool 45.
Is recessed. The insertion recess 46 is slightly deeper than the projecting width of the tip end portion 45 a of the screw tool 45, and is formed in an annular shape around the pulley shaft 41. By inserting the tip portion 45a, it is possible to prevent interference between the pulley 33 and the screw tool 45 when the pulley 33 rotates. In this example, as shown in FIG. 1B, the insertion recesses 46 are formed on both side surfaces of the pulley 33, respectively.
Can be used either left or right. Further, a V groove 55 for accommodating the wire 11 is formed on the outer peripheral surface of the pulley 33, and the insertion recess 4 is formed so that the thickness between the V groove 55 and the insertion recess 46 does not become thin.
The inner surface 46a on the outer peripheral side of 6 is an inclined surface substantially parallel to the one surface 55a of the V groove 55, and the insertion recess 46 prevents the pulley 33 from being deteriorated in strength.

The limit switch 44 includes the wire 11
When a certain amount of tension is applied to the pulley shaft 41 and the pulley shaft 41 slides to the one end side a in the longitudinal direction of the shaft hole 42 against the tension spring 43, the actuator 47 contacts the pulley shaft 41 and the wire 11 has a certain tension or more. When the pulley shaft 41 disappears and the pulley shaft 41 slides to the other end side B in the longitudinal direction of the shaft hole 42 by the tension spring 43, the pulley shaft 41 is fixed to the pulley mounting base 40 so as to separate from the actuator 47.

The above-mentioned substantially U-shaped pulley attachment base 4
The front opening 51 on the side where the wire 11 of 0 is introduced and the rear opening 52 on the side opposite to the front opening 51 are provided with a pad plate 53 for preventing the wire 11 from slipping off. In this example, as shown in FIG. 2A, the backing plate 53 is formed by bending one side of the side wall 40a on the rear end side. In this way, the contact plate 53 serves as a guide when the wire 11 is wound around the pulley 33, and after the wire 11 is passed through, the wire 11 is moved to the pulley 3
It works to take off from 3.

Further, a cutout portion for exposing a part of the pulley 33 to the outside is provided in a part of the front opening 51 on the side where the wire 11 is introduced of the pulley mounting base 40 having an approximately U-shape. 54 is formed. In this example, the cutout portions 54 are formed in a substantially V shape in the front lower portions of the side walls 40a, respectively. The cutout portions 54 increase the handheld area of the pulley 33, so that the pulley 33 has the same shape.
When the wire 11 is passed through, the pulley 33 can be picked up by a finger and pulled forward.

The above-mentioned substantially U-shaped pulley attachment base 4
The bottom wall 49 of No. 0 has a cutout hole 50 formed by cutting out a part of the bottom wall 49 to allow the wire 11 to pass through, and the wire 11 is pulled out so as not to contact the pulley mounting base 40.

However, under normal conditions, the wire 11 wound around the pulley 33 is under a certain tension due to the vertical load of the clothesline 9 or laundry,
At this time, the pulley shaft 41 is moved to one end side a in the longitudinal direction of the shaft hole 42 of the pulley mounting base 40 against the spring force of the tension spring 43, and directly presses the actuator 47 of the limit switch 44. (State of FIG. 1A). On the other hand, when the wire 11 is no longer tensioned above a certain level, the pulley shaft 41 moves the tension spring 43.
Is moved to the other end side in the longitudinal direction of the shaft hole 42 of the pulley mounting base 40 by a spring force of, and is separated from the actuator 47 of the limit switch 44, whereby the limit switch 44 is actuated to loosen the wire 11. Detected,
For example, the output of the DC motor 4 is stopped.

Here, since the pulley mounting base 40 is formed in a substantially upward U-shape, and the bottom wall 49 of the pulley mounting base 40 is closed, the lower parts of both side walls 40a of the pulley mounting base 40. There is no fear of deformation in the direction in which
In particular, even if the pulley mounting base 40 is made thin to reduce the weight, there is no fear of spreading. Also, FIGS.
As shown in FIG.
Since a flange 48 is projected in the horizontal direction from the opening end of the upper part of the above, and this flange 48 is attached to the top plate 3 of the storage box 2, both side walls of the pulley attachment base 40 formed in a substantially upward U-shape. The top plate 3 can prevent the upper portion of the 40a from spreading outward, and thus the gap between the pulley 33 and the pulley mounting base 40 can be reliably prevented from widening. Therefore, the pulley 3
The problem that the gap between the wire 3 and the side wall 40a of the pulley mounting base 40 is greatly expanded and gets into the wire 11 and gets caught therein does not occur.

Moreover, the limit switch 44 for detecting the looseness of the wire 11 is fixed to the outside of the side wall 40a of the pulley mounting base 40 by a screw tool 45, but protrudes inside the pulley mounting base 40. Since the tip end portion 45a of the screw tool 45 is inserted into the insertion recess 46 formed in the side surface portion 33a of the pulley 33, the pulley mounting base 4
Although the limit switch 44 is fixed to 0 by the screw tool 45, the screw tool 45 can be prevented from hitting the pulley 33, and therefore the limit switch 44 can be brought closer to the pulley shaft 41. The slack of the wire 11 can be detected by directly contacting the actuator 47 with the pulley shaft 41.
As a result, it is not necessary to interpose an intermediate member between the pulley shaft 41 and the actuator 47 of the limit switch 44 as in the conventional case, so that the number of parts of the slack detecting means can be reduced and the structure can be simplified. is there.

Further, the rear-side opening portion 52 having a substantially upwardly U-shape.
Since a part of the wire 11 is bent to form a patch plate 53 for preventing the wire 11 from slipping off, the patch plate 53 serves as a guide when the wire 11 is wound around the pulley 33, and therefore the wire 1
It becomes easy to pass 1 through the pulley 33. Moreover, a cutout portion 54 for exposing a part of the pulley 33 to the outside is provided in a part of the front opening 51 on the side where the wire 11 of the pulley attachment base 40 having a substantially U-shape is introduced. Therefore, when passing the wire 11 through the pulley 33, as shown in FIG.
As shown in FIG. 18, by inserting fingers from the notches 54 on both sides of the pulley mounting base 40 and picking up the pulley 33 and pulling it toward you, the pulley 33 can be pulled out diagonally forward against the tension spring. Yes, this allows
Since the spaces between the pulley 33 and the top plate 3 and between the pulley 33 and the contact plate 53 are widened, the work of passing the wire 11 through the pulley 33 in the pulley mounting base 40 becomes easy. Moreover, since the hand-held area is increased by the notch portion 54, the pulley 33 can be pulled out with a finger against the spring force of the tension spring 43, and the wire 1
It becomes easy to carry out the threading work of 1.

Further, after passing the wire 11, the contact plate 53 can prevent the wire 11 from coming off the pulley 33. For example, when the wire 11 is loosened, the presence of the contact plate 53 can effectively prevent the wire 11 from derailing from the pulley 33. Moreover, since the backing plate 53 is formed by bending a part of the pulley mounting base 40, the number of parts does not increase,
The structure of the pulley mounting base 40 can be simplified.

In FIG. 14, a part of the bottom wall 49 of the pulley mounting base 40 having an approximately U-shape is cut out to form a cutout hole 50 through which the wire 11 is inserted, and the pulley mounting base 40 is positioned below the pulley mounting base 40. The case where the decorative plate 60 is arranged on the wire and the wire 11 is pulled out from the opening 61 provided in the decorative plate 60 is shown. In this example, the bottom wall 49 of the pulley mounting base 40 prevents the lower portions of the both side walls 40a from spreading outward, and a cutout hole 5 formed by cutting out a part of the bottom wall 49.
In addition to the structure in which the wire 11 can be pulled out from below the substantially U-shaped pulley attachment base 40 without touching the pulley attachment base 40 by passing the wire 11 through Since the decorative plate 60 is arranged below the base 40 and the wire 11 is pulled out from the opening 61 provided in the decorative plate 60, the decorative plate 6
The pulley mounting base 40 can be covered with 0, and the opening 61 of the decorative plate 60 can be covered with the pulley mounting base 40.
By forming the bottom wall 49 of the wire below the notched hole 50, it is possible to pull out the wire 11 downward while keeping the wire 11 from coming into contact with the decorative plate 60.

Next, the drive unit 5 is provided with position detecting means 13 for detecting the upper limit position P1, the lower limit position P2, and the drying position P3 of the clothes pole 9 shown in FIG.
The upper limit position P1 is a position where the clothesline 9 is stored, the lower limit position P2 is a position where the laundry is hooked on the clothesline 9 and is hung, and the drying position P3 is the lower limit position P2.
The position at which the laundry hooked at is raised to near the upper limit position P1 and dried. The position for drying the laundry is the drying position P
The number is not limited to 3, and can be arbitrarily set by the stop switch of the remote controller.

Here, the drying position P3 of the clothesline 9 is
Volume resistance 5 whose resistance changes electrically by rotation
4, and the upper limit position P1 and the lower limit position P2 are detected by the photo interrupter 43 and the detection disk 15 with the light shielding plate 39. The detection board 37 to which the photo interrupter 43 is attached is, as shown in FIG.
Is attached to a plurality of mounting bosses 36 projecting from the outer surface of the detection board 15, and the detection disk 15 is rotatably arranged between the detection board 37 and the drive unit case 6. 38 in FIG.
Is a substrate pressing member. On the surface of the detection disk 15, a light shielding plate 39 having a substantially circular arc shape concentric with the rotation center of the detection disk 15 is projected, and a gear portion 40 formed on the outer peripheral surface of the detection disk 15 is provided. The pinion 42 fitted in the motor output shaft 41 protruding to the outside of the drive unit case 6 meshes.

However, when the clothes rod 9 is moved up and down by the raising switch, the lowering switch, and the stop switch that is stopped midway, which are provided on the remote controller, the clothes rod 9
9 is raised from the lower limit position P2 shown in FIG. 9 to the drying position P3, pressing the raising switch once winds the wire 11 and the clothes rod 9 starts to rise. At this time, the motor output shaft 41 causes the pinion 42 to move. The detection disk 15 starts to rotate via the, and the volume resistance 4 causes a predetermined rotation amount of the detection disk 15 (the clothesline 9 is at the drying position P).
3) is detected, and the control unit stops the drive of the DC motor 4 based on the detected rotation angle.
Will automatically stop at the drying position P3. Therefore, even if the user forgets to press the stop switch at the drying position P3 while operating the remote controller or leaves the place for business, the clothesline 9 will automatically move at the predetermined drying position P3. It will stop. After that, by continuing to push the raising switch, it is possible to raise from the drying position P3 to the upper limit position P1. As a result, when the drying pole 9 is stored up to the upper limit position P1, the end of the drying pole 9 opens, for example, in the ceiling. It is possible to prevent the edge or the cosmetic cover from being caught or hit. That is, since the user can confirm the clothes-drying rod 9 when the clothes-drying rod 9 moves up to the upper limit position P1, it is possible to prevent a mistake in storing the clothes-drying rod 9 such as soiling the laundry.

Here, when the clothesline 9 is located at an intermediate position between the lower limit position P2 and the upper limit position P1 shown in FIG. 9,
The light shield plate 39 provided on the detection disk 15 does not pass between the photo interrupters 43, while one end in the length direction of the light shield plate 39 is located between the photo interrupters 43 when the clothesline 9 reaches the upper limit position P1. The light blocking plate 39 and the photo interrupter 43 shown in FIG. 5 are arranged so that the other end in the lengthwise direction of the light blocking plate 39 enters between the photo interrupters 43 when the clothes line 9 is lowered to the lower limit position P2. The positional relationship of is set. In this example, the photo interrupter 43 is a normally open type, and when the light shield plate 39 does not pass between the photo interrupters 43, DC is applied.
The motor 4 can be driven, and the drive of the DC motor 4 is stopped when the light shield plate 39 enters between the photo interrupters 43.

In this way, the positions of the upper limit position P1 and the lower limit position P2 of the clothesline 9 are detected by the photo interrupter 43 and the detection disk 15, and the upper limit position P1 and the lower limit position P are detected.
By allowing the clothes-drying rod 9 to move up and down between the two, the position detection means 13 can prevent the clothes-drying rod 9 from being lowered or raised too much, which can enhance the safety of use and the detection disk 15 Since the clothes rod 9 rotates according to the amount of elevation, the upper limit position P1 and the lower limit position P2 of the clothes rod 9 can be accurately detected based on the rotation amount of the detection disk 15, and high reliability can be obtained. Further, since the photo interrupter 43 is configured so that the drive of the DC motor 4 is stopped when the light shield plate 39 enters between the photo interrupters 43, foreign matter other than the light shield plate 39 enters between the photo interrupters 43. Even at this time, since the drive of the DC motor 4 is stopped, malfunction can be prevented and safety can be ensured.

[0036]

As described above, according to the first aspect of the present invention, the motor accommodates the motor in the storage box which is attached to the opening of the ceiling and which opens downward, and the wire for suspending the clothesline is pulleyed. In the lifting and lowering device, which is connected to the rotating shaft of the motor via the motor and raises or lowers the wire by the motor to raise or lower the clothes rod. Store the pulley around which the wire can be wound,
On the side wall of the pulley mounting base, there is an elongated hole that attaches the pulley shaft so that it can slide in the direction in which the wire is tensioned and in the opposite direction, and the direction in which the pulley shaft is tensioned in the wire is opposite. A tension spring that pulls in the direction is installed, and a wire slack detection limit switch is fixed on the outside of the side wall of the pulley mounting base with a screw tool, and on the side surface of the pulley facing the inner surface of the side wall of the pulley mounting base. An insertion recess is provided to insert the protruding tip portion inside the side wall of the screw tool, and the limit switch is configured such that tension is applied to the wire at a certain level or more and the pulley shaft resists the tension spring and the shaft hole. When it slides to one end side in the longitudinal direction, the pulley shaft hits the actuator and the wire is not tensioned more than a certain amount. Since the pulley shaft is fixed to the pulley mounting base so that the Lee shaft separates from the actuator when the Lee shaft slides to the other end side in the longitudinal direction of the shaft hole by the tension spring, the pulley mounted in a substantially upward U-shape Since the lower parts of both side walls of the base do not spread outward, and therefore the gap between the pulley mounting base and the pulley does not spread, even if the wire becomes loose, the wire will be caught in the gap and The problem that the lifting operation cannot be performed does not occur. Also, since the tip of the screw tool protruding inside the pulley mounting base is inserted into the insertion recess recessed in the side surface of the pulley, the structure is such that the limit switch is fixed to the pulley mounting base with the screw tool. , It is possible to prevent the screw tool from hitting the pulley, so
It becomes possible to detect the wire slack by bringing the limit switch close to the pulley shaft and directly contacting the actuator with the pulley shaft, and it is necessary to interpose an intermediate member between the pulley shaft and the limit switch actuator as in the past. Therefore, the number of parts of the slack detecting means is reduced, and the structure can be simplified.

In addition to the effect of claim 1, the invention according to claim 2 projects a flange in a horizontal direction from the opening end of the upper part of the pulley mounting base having a substantially upwardly U-shape, and this flange is Since it is attached to the top plate of the storage box, the top plate can prevent the upper parts of both side walls of the pulley mounting base formed in a substantially upward U shape from spreading outward,
Therefore, it is possible to reliably prevent the gap between the pulley and the pulley mounting base from widening.

In addition to the effect of claim 1, the invention of claim 3 has a notch hole through which a wire is inserted by cutting out a part of the bottom wall of the pulley attachment base having a substantially upwardly U-shape. Since it is formed, while preventing the side walls from spreading outward by the bottom wall, by passing the wire through the cutout hole formed by cutting out a part of the bottom wall, the pulley mounting base of a substantially upward U shape The wire can be pulled out from below without touching the pulley mounting base.

In addition to the effect of claim 1, the invention of claim 4 has a rear opening on the side opposite to the front opening on the side where the wire of the pulley mounting base having a substantially U-shape is introduced. Since a part of the part is bent to form a pad plate for preventing wire dislodgement, this pad plate serves as a guide when winding the wire around the pulley, making it easier to pass the wire through the pulley.
Further, after passing the wire, the patch plate can prevent the wire from being detached from the pulley, which is particularly effective in preventing detachment when the wire is loosened. Moreover, since the backing plate is formed by bending a part of the pulley mounting base, the number of parts does not increase, and the structure of the pulley mounting base can be simplified.

Further, in addition to the effect of claim 1, the invention of claim 5 further comprises a pulley mounting base of a substantially upwardly U-shape having a pulley opening at a part of a front opening on a side where a wire is introduced. Since we provided a notch to expose a part to the outside, when passing the wire through the pulley, by inserting your fingers from the notches on both sides of the pulley mounting base and picking the pulley, pull it toward you. The pulley can be pulled out diagonally forward against the tension spring, which increases the space between the pulley and the top plate and between the pulley and the backing plate. The work to pass through becomes easy. Moreover, since the hand-held area is increased due to the notch, the pulley can be easily pulled out by the finger against the spring force of the tension spring, and the wire threading operation becomes easy.

[Brief description of drawings]

FIG. 1A is a side view showing an example of an embodiment of the present invention, and FIG. 1B is a sectional view taken along line GG of FIG.

FIG. 2 (a) is a plan view illustrating a pulley mounting base of the same, and FIG. 2 (b) is a front view.

FIG. 3A is a rear view for explaining the pulley mounting base of the above, and FIG. 3B is a sectional view of the pulley insertion base and its vicinity.

FIG. 4 (a) is a front view of the lifting / lowering clothes hanging device,
(B) is a plan view.

FIG. 5 is a plan view of the control unit case and the drive unit case of the above.

FIG. 6 is an explanatory diagram of the position detection unit of the above.

FIG. 7 is an explanatory diagram showing a wound state of the above wire.

8A is a sectional view of the internal structure of the drive unit case, and FIG. 8B is a sectional view of a worm gear.

9 (a), (b) and (c) are explanatory views of an upper limit position, a lower limit position and a drying position of a clothesline.

FIG. 10 is a front view in which the above pulley mounting base is mounted on a top plate.

FIG. 11 is a side view in which the above pulley attachment base is attached to a top plate.

FIG. 12 is a rear view in which the above pulley attachment base is attached to a top plate.

FIG. 13 is a bottom view of the above pulley mounting base mounted on a top plate.

FIG. 14 is an explanatory diagram of another embodiment.

FIG. 15 is a rear view of the above pulley when it is pulled out forward.

FIG. 16 is a plan view showing a case where the above pulley is pulled out forward.

FIG. 17 (a) is a side view when pulling out the above-mentioned pulley forward, and FIG. 17 (b) is a bottom view.

FIG. 18 is a front view of the above pulley when it is pulled out forward.

[Explanation of symbols]

1 Lifting and drying equipment 2 storage boxes 3 Top plate 4 motor 9 clothesline 11 wires 33 pulley 40 pulley mounting base 40a side wall 41 pulley shaft 43 tension spring 44 Limit switch 45 screw tool 45a tip part 46 insertion recess 47 actuator 48 flange 49 bottom wall 50 Notch hole 51 Front opening 52 Rear opening 53 Patch 54 Notch

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Noriyuki Kitachi, 1048, Kadoma, Kadoma, Osaka Prefecture, Matsushita Electric Works, Ltd. (72) Kenji Adachi, 1048, Kadoma, Kadoma, Osaka Prefecture, Matsushita Electric Works, Ltd. (72) ) Inventor Takasaku Inoue 1048 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd. (56) Reference JP-A-8-310790 (JP, A) JP-A-52-118753 (JP, A) JP-A-10 -179991 (JP, A) Actual development 60-31266 (JP, U) Actual development 52-48529 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) D06F 57/12 B66D 1/54

Claims (5)

(57) [Claims] 1. A motor is housed in a storage box which is attached to an opening of a ceiling and which opens downward, and a wire for hanging a clothesline is connected to a rotary shaft of the motor via a pulley, and the wire is wound by the motor. Or, in an elevating and lowering device for hoisting and lowering the clothesline up and down, a pulley around which a wire is wound is housed inside a pulley mounting base formed in a generally U-shape, and the pulley mounting base is Attach a pulley shaft to the side wall so that it can slide in the direction in which the wire is tensioned and in the opposite direction, and pull the pulley shaft in the direction opposite to the direction in which the wire is tensioned. A tension spring is installed, and a wire slack detection limit switch is fixed to the outside of the side wall of the pulley mounting base with a screw tool. , The side surface of the pulley facing the inner surface of the side wall of the pulley mounting base is provided with an insertion recess for inserting the tip portion protruding inward of the side wall of the screw tool, and the limit switch has a certain distance or more on the wire. When the pulley shaft slides to one end in the longitudinal direction of the shaft hole against the tension spring due to the tension, the actuator hits the pulley shaft, and the wire is not tensioned more than a certain amount, and the pulley shaft pulls. An elevating and lowering device, characterized in that a pulley shaft is fixed to a pulley mounting base so as to separate from an actuator when slid to the other end side in the longitudinal direction of a shaft hole by a spring. 2. A flange is horizontally projected from an opening end portion of an upper portion of a pulley mounting base having a substantially U-shape, and the flange is mounted on a top plate of a storage box. Lifting / drying equipment. 3. The lifting and lowering apparatus according to claim 1, wherein a part of the bottom wall of the substantially U-shaped pulley mounting base is cut out to form a cutout hole through which a wire passes. 4. A pad for preventing wire derailment by bending a part of a front opening on a side where a wire is introduced and a rear opening on a side opposite to the wire of the pulley mounting base having an approximately U-shape. The lifting / drying apparatus according to claim 1, wherein a plate is formed. 5. A notch for exposing a part of the pulley to the outside is provided in a part of the front opening of the substantially U-shaped pulley mounting base on the side where the wire is introduced. The lifting and lowering apparatus according to claim 1, which is characterized in that