JPH0732875Y2 - Motor stop device in winding drive device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention provides a wound member such as a wire pulled in a feeding direction by rotating a winding body such as a drum in both forward and reverse directions by driving a motor. Winding against the pulling in the direction,
Alternatively, the present invention relates to a motor stop device that automatically stops the driving of the motor in the feeding direction when the feeding is completed, in the winding drive device that is fed according to the pulling in the feeding direction.

Problems to be Solved by Conventional Techniques and Inventions Winding up is one of the means for drawing a screen wound around a winding pipe supported in a housing and accommodating it in a housing by driving a motor. A rotating force in the winding direction is applied to the pipe by a spring force, and one end of the wire is connected to the hanging end of the screen,
By connecting the other end to the take-up drum of the take-up driving device installed below the housing, tensioning the screen and the wire, and rotating the take-up drum in the direction of taking up the wire by driving the motor. , The screen is stretched by the wire and unwound against the rotational force of the take-up pipe, and the screen is taken up in accordance with the rotational force of the take-up pipe by rotating the take-up drum in the direction in which the wire is unwound. However, in the conventional winding drive device, the driving of the motor is stopped by the operator manually operating the stop switch. When storing in the housing, the operator waits near the stop switch from the start of driving the motor until the winding of the screen is completed. Not only is the need to delay the timing to stop driving the motor, but after the wire has been fully unwound over its entire length to complete the screen winding, the wire will be reversed in the spinning winding drum. Since the screen is rewound and the screen is pulled out from the housing again, there is a drawback that it is difficult to stop the driving of the motor when the wire is most extended.

Means for Solving the Problems As means for solving the above problems, the first invention is
The rotating body is composed of a main body that rotates concentrically with a rotating shaft driven by a motor, and an operating body supported by a swinging shaft at a position eccentric from the rotation center of the main body. When the winding end of the wire is connected to a position separated from, the operating body approaches the rotation center of the main body by the winding of the wire around the rotating body and comes into contact with the main body. It is possible to oscillate between the rotating body and the separated state in which it separates from the center of rotation of the main body and projects to the outside, and is pressed by the operating body in the separated state of the operating body in the vicinity of the rotating body to stop the motor drive The switch is provided.

According to a second aspect of the present invention, the winding body is equipped with a main body that rotates integrally with the winding body, and a rotating body that is composed of an operating body supported by a swing shaft at a position eccentric from the rotation center of the main body. ,
The winding end of the wound member is connected to a position separated from the swing shaft of the operating member, and the operating member approaches the center of rotation of the main body by winding the wound member around the winding member. It is possible to oscillate between a contacting state in which it abuts against the main body and a separated state in which the wound member is unrolled from the winding body and is separated from the center of rotation of the main body and protrudes outward. A switch is provided which is pressed by the actuating body in a separated state of the actuating body to stop the driving of the motor.

Advantageous Effects and Effects of the Invention According to the first invention, when the motor is driven in one direction during winding, the winding body is held in the contact state in which the actuating body is in contact with the main body of the winding body and contacts the switch. The member to be wound is wound around this winding body by rotating without winding, and when the wound member to be wound in this manner is unrolled, when the motor is started to drive in the reverse direction, As the take-up member is held in the abutting state and rotates in the opposite direction without coming into contact with the switch, the take-up member is unwound and the unwinding length gradually increases, and After all the take-up members have been unwound and separated from the outer peripheral surface of the winding body, as the body continues to rotate, the actuating body is pulled by the pulling force in the unwinding direction urged by the wound member. , Away from the center of rotation of the body around the swing axis. It swings in the interposing direction and protrudes to the outside, and the protruding actuating body presses the switch to actuate it, thereby stopping the drive of the motor in the feeding direction and stopping the rotation of the winding body. Since the winding member is held in the most extended state without being rewound on the winding body, as described in the above operation, the motor is automatically driven when the winding of the wound member is completed. Since it can be stopped automatically, it is not necessary for the operator to wait until the end of feeding after the start of feeding, and the effect that the feeding length of the wound member at the end of feeding can be made constant at all times is achieved. is there.

Further, according to the second aspect of the present invention, at the time of winding, the rotating member in the abutting state rotates together with the winding member without contacting the switch, so that the member to be wound is wound around the winding member. ,
Further, when the wound member is unwound, the wound member is unwound by rotating in the opposite direction together with the wound member while the rotating body is held in the contact state, and the unwound member is unwound. After the completion, as the body of the rotating body continues to rotate together with the winding body, the drive of the motor is automatically stopped by oscillating the operating body so as to project to the outside and operating the switch. Attention, due to this action,
The same effect as that of the first device is produced.

First Embodiment Hereinafter, a first embodiment in which the present invention is applied to a winding drive device for winding and unwinding a screen will be described with reference to FIGS.
It will be described with reference to the drawings.

In the figure, reference numeral 1 denotes a horizontally long housing fixed to a wall surface 2 and having an open lower surface, in which a winding pipe 3 elongated in the horizontal direction is provided with fixed shafts 4, 4 of the housing 1 at both ends. The winding end edge of the screen 5 is fixed to the outer periphery of the winding pipe 3 by being fitted to the winding pipe 3, and the feeding end edge of the screen 5 hangs vertically downward. Has one end with a fixed shaft 4
The winding pipe 3 with the other end being connected to the winding pipe 3.
A rotating force in the direction of winding the screen 5 is applied by the elastic force of a coil spring (not shown) housed concentrically with the screen spring.

A winding drive device 8 for winding and unwinding the screen 5 is provided below the winding pipe 3 in a fixed state on a support member 9, and an electric motor 11 is provided on a box-shaped base body 10. Worm 13 stuck to the output shaft 12
Is meshed with a worm wheel 15 fixed to the support shaft 14, and a small-diameter gear 16 integrally fixed to the worm wheel 15 is fixed to the support shaft 14 to a large-diameter gear 18 fixed to the horizontal rotary shaft 17. Meshed with an electric motor
The rotation shaft 17 is decelerated by the drive of 11 to rotate in both forward and reverse directions, and when the drive of the electric motor 11 is stopped, the rotation shaft 17 becomes unrotatable due to the meshing of the worm 13 and the worm wheel 15. It is getting locked up.

On the rotating shaft 17, a winding drum 20 composed of a main body 21 having a substantially semicircular shape and an actuating body 22 having an arc shape is provided with a central hole of the main body 21.
By fitting 23, integrally with the rotary shaft 17, and
A swing shaft 24, which is mounted concentrically so as to be rotatable and is projected at one end portion in the circumferential direction of the actuating body 22 in parallel with the rotary shaft 17,
By fitting in the insertion hole 25 formed at the position eccentric to the outer peripheral side from the center of the rotation shaft 17 of the main body 21, the actuation body 22 is supported by the main body 21 so as to be relatively swingable, and the actuation body 22 is The winding drum 20 in a state of being swung so as to approach the rotating shaft 17 and in close contact with the main body 21 has a circular outer peripheral surface and concentric circular collars 26, 26 are formed on both side edges thereof. In addition, in a state in which the operating body 22 swings so as to be separated from the rotating shaft 17 and is spaced from the main body 21, the outer periphery of the flange portion 26a of the operating body 22 is attached to the main body 21. The flange 26 of the winding drum 20 in the state of being in close contact with the flange 26 is projected outside the outer diameter.

The winding drum 20 has one wire 30 at the other end position circumferentially spaced from the swing shaft 24 of the operating body 22.
However, as shown by the alternate long and short dash line in FIG.
It is guided to the inner peripheral side by passing through the insertion hole 32 of 26a, and is locked in the semicircular locking concave portion 33 formed in the inner circumference of the actuating body 22 as shown by the two-dot chain line in the figure. The connecting end of the wire 30 extending above the winding drum 20 has a spherical connecting member 35 fixed to the end.
Is connected to the screen 5 by engaging the end bar 36 fixed to the lower end edge of the screen 5 with the central portion of the end bar 36 in the longitudinal direction via the bracket 37.
3 is rotated in the direction of arrow A in FIG. 3, the tension of the wire 30 due to the pulling force of the winding pipe 3 in the direction of winding the screen 5 causes the wire 30 to move while the actuating body 22 is in close contact with the main body 21. The screen 5 is fed out from the winding pipe 3 while being wound around the outer peripheral surface of the winding drum 20, and when the winding drum 20 is rotated in the direction of arrow B in FIG. In the state in which the winding body 20 is wound around the winding drum 20, the actuating body 22 is the main body due to the pulling force of the winding pipe 3.
The screen 5 is wound around the outer circumference of the winding pipe 20 according to the rotational force of the winding pipe 3 while the wire 30 is being fed out from the winding drum 20 while being held in close contact with the winding pipe 21. .

A limit switch 40 for stopping the drive of the electric motor 11 in the feeding direction of the wire 30 is provided in the base of the winding drive device 8 in the vicinity of the winding drum 20, and the winding body 41 of the switch 41 is wound. The operating piece 42 formed on the side surface corresponding to the take-up drum 20 in an obliquely upward direction is provided with the operating piece 42 and the take-up drum 20.
And a swinging lever 44 supported by a shaft 43 between them and the take-up drum 20 as shown in FIG.
In the state of forming a circle by closely contacting 22 with the main body 21, the rocking lever 44 is adapted to correspond to the outer periphery of the collar 26 of the winding drum 20 with a small gap, and the rocking lever 44 is When the operating piece 42 swings toward the side closer to the switch body 41 by being pressed from the winding drum 20 side and reaches a predetermined posture, the limit switch 40 operates to feed the wire 30 of the electric motor 11. A signal for stopping the driving in the direction is output to a control device (not shown).

Similarly, in the base body 10, another limit switch for stopping the drive of the electric motor 11 in the winding direction of the wire 30.
45 is provided, and when the feeding of the screen 5 is completed and the end bar 36 at the lower end of the screen 5 approaches the upper part of the winding drive device 8, as shown by the chain line in FIG. The member 46 is pushed downwards and its slope 47
By swinging the operating piece 48 that has been engaged in the direction toward the switch body 49 that supports the lower end of the operating piece 48, the limit switch 45 operates and the drive of the electric motor 11 in the winding direction of the wire 30 is stopped. The feeding of the screen 5 is automatically completed.

The first embodiment has the above-described structure, and when the screen 5 is wound up and used in the housing 1, the driving of the electric motor 11 in the direction of feeding out the wire 30 is started by the operation of a starter switch (not shown). Then, the winding drum 20 in a state where the wire 30 is wound and the operating body 22 is in close contact with the main body 21 is rotated clockwise without contacting the swing lever 44 of the limit switch 40, and the wire 30 is fed out. As the length becomes longer, the payout length of the screen 5 becomes shorter, and the screen 5 is almost completely accommodated in the housing 1. As shown in FIG. 6, the swing shaft 24 is below the rotary shaft 17. And the connecting portion of the wire 30 is positioned almost directly above the swing shaft 24, the rotation of the rotary shaft 17 causes the swing shaft 24 to draw a circular arc and the limit switch.
Along with the movement to the 40 side, the actuating body 22 is held in the posture in which the connecting portion of the wire 30 is positioned right above the swing shaft 24 by the upward pulling force from the screen 5 side. While moving upward, it moves toward the limit switch 40 side and moves to the left side in FIG. 6, and the flange portion 26a of the actuating body 22 abuts against the swing lever 44 and pushes the actuating piece 42 while swinging this. As a result, in the state between the state shown in FIG. 7 and the state shown in FIG. 8, the drive of the electric motor 11 is stopped by the operation of the limit switch 40, the feeding of the wire 30 is blocked, and the screen 5 is The winding is automatically completed when the housing 1 is completely housed.

In the first embodiment, the wire of the electric motor 11 is
In order to operate the limit switch 40 for stopping the drive in the direction of unwinding 30, the outer peripheral surface of the collar 26a at the intermediate portion between the swing shaft 24 of the actuating body 22 and the connecting portion of the wire 30 is projected laterally. Although the operating piece 42 is pressed by utilizing the above, instead of this, a limit switch is provided above the winding drum 20, and the operating piece is projected on the lower surface of the switch body, and the wire 30 Since the operating body 22 moves upward while being separated from the main body 21 when the feeding of is completed, the limit switch may be operated by pushing up the operating piece at the upper end portion of the operating body 22.

Next, a second embodiment of the present invention will be described with reference to FIGS. 9 to 14.

In the figure, reference numeral 51 denotes a housing in which a slender winding drum 53 for winding and unwinding a screen 52, which will be described later, is concentrically formed on both end surfaces of a rotary shaft 54. , 54 are fitted in brackets 55, 55 so that they are horizontally and rotatably supported.
53 is a mesh of a large-diameter gear 56 and a small-diameter gear 57 fitted on the rotary shaft 54 at one end side thereof, and a worm wheel 58 and a worm 59 integrally formed with the small-diameter gear 57. Is connected to the output shaft 61 of the electric motor 60 through the engagement of the electric motor 60, and when the electric motor 60 is driven, the winding drum 53 is rotated together with the rotating shaft 54 in one direction or in the opposite direction. With an electric motor
When the drive of 60 stops, the worm wheel 58 and worm
The rotation shaft 54 and the winding drum 53 are locked so as not to rotate by meshing with 59.

A rotating body 62, which is a separate body from the winding drum 53 and is composed of a main body 63 having a substantially semicircular shape and an actuating body 64 having an arc shape, is provided on each of the rotating shafts 54, 54. Is attached to the rotary shaft 54 so as to be able to rotate integrally with the rotary shaft 54, and the actuating body 64 has support holes 65, 65 penetratingly provided at one end portion in the circumferential direction of the main body 63. By aligning the swing shaft 67 with a support hole 66 provided at a position eccentric to the outer peripheral side from the rotary shaft 54 and fitting the support shaft 66 therein, the swing shaft 67 is parallel to the rotary shaft 54 and both rotary bodies 62, 62. Rocking axes 67 whose axes coincide with each other,
It is supported by the main body 63 so that it can swing around 67, and when the operating body 64 is in close contact with the main body 63, the rotary body
62 has a substantially circular shape, and an actuator 64
In a state in which the rotary body swings away from the rotary shaft 54, the outer peripheral portion of the actuating body 64 projects more outward than the outer peripheral shape of the rotary body 62 in the state of being in close contact with the main body 63.

A screen 52 is provided on both of the rotating bodies 62, 62 and has a winding end edge portion.
Coupling by connecting both ends of the connecting rod 68 joined by winding 52a into the connecting hole 69 at the other end position which is circumferentially spaced from the swing shaft 67 of each actuating body 64. When the take-up drum 53 and the two rotating bodies 62, 62 are rotated counterclockwise in FIG. 10, the hanging screen 52
And the tension force due to the weight of the end member 70 fixed to the feeding end edge thereof causes the actuating body 64 to be in close contact with the main body 63, and the connecting rod 68 to extend along the entire length in the longitudinal direction on the outer periphery of the winding drum 53. The screen 52 is adapted to be wound around the outer periphery of the winding drum 53 while being fitted in the formed recess 71, and when the winding drum 53 and the rotating body 62 are rotated clockwise in the same figure. In the state where the screen 52 is wound around the outer periphery of the winding drum 53, the downward tension force acting on the screen 52 causes the rotating body 62 to move into the main body 63.
The screen 52 is gradually extended so as to hang vertically downward while being held in close contact with the screen 64.

A limit switch 75 for stopping the drive of the electric motor 60 is provided in the housing 51 at a position near one of the rotating bodies 62.
Is provided, on the side surface of the switch main body 76 corresponding to the rotary body 62, an operation piece 77 for feeding stop is projected obliquely downward, and its lower end portion is in contact with the swing lever 78,
As shown in FIG. 12, the rotary body 62 is attached to the main body 63 of the rotary body 62 by the operating body 64.
In a state in which the two are in close contact with each other to form a substantially circular shape, the swing lever 78 is adapted to correspond to the outer peripheral surface of the rotating body 62 with a small gap, and the swing lever 78 is pressed from the rotating body 62 side. As a result, when the operating piece 77 swings in a direction approaching the switch body 76 and reaches a predetermined posture, the limit switch 75 operates and the driving of the electric motor 60 in the feeding direction is stopped. There is.

Further, in the limit switch 75, an operation piece 79 for stopping the winding is projected obliquely downward on the lower surface of the switch main body 76, and when the winding of the screen 52 is completed, the end member 70 at the lower end thereof is moved upward. Then, when the position near the switch main body 76 is reached, as shown by the chain line in FIG. 10, the pressing member 80 fixed to the end member 70 pushes up the operating piece 79, and the limit switch 75 operates to operate the electric motor 60. The driving in the winding direction is stopped, and the winding of the screen 52 is automatically completed.

The second embodiment has the above-described structure, and when the screen 52 is extended, the driving of the electric motor 60 is started by the operation of a start switch (not shown). 62 is the swing lever of the limit switch 75
The screen 52 is rotated by rotating the take-up drum 53 in the same direction while rotating in the clockwise direction in FIG.
Is extended, and the screen 52 is extended over its entire length so that it is separated from the outer peripheral surface of the winding drum 53, and as shown in FIG. 12, the swing shaft 67 is located above the rotary shaft 54. After the connecting rod 68 at the winding end of the screen 52 is positioned almost directly under the swing shaft 67, the rotary shaft
As the position of the swing shaft 67 moves in an arc by the rotation of 54 and moves to the limit switch 75 side, the actuator 64
However, in the state in which the connecting rod 68 is positioned under the swing shaft 67 by the downward pulling force of the screen 52, the twelfth twelfth heading toward the limit switch 75 side while moving downward.
When moved to the right in the figure, the outer peripheral surface of the actuating body 62 protruding in the same direction pushes the actuating piece 77 while swinging the swing lever 78, and the state shown in FIG. 13 and the state shown in FIG. In a state between and, the drive of the electric motor 60 is stopped by the operation of the limit switch 75, and the feeding of the screen 52 is automatically completed.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of the first embodiment, FIG. 2 is a sectional view, FIG. 3 is a partial perspective view, and FIG. 4 is an exploded perspective view thereof. 5 and 8 are partially cutaway front views showing the operation, FIG. 9 is a partially cutaway front view of the second embodiment, FIG. 10 is a sectional view, and FIG. FIG. 12 is an exploded perspective view and FIG. 12 to FIG. 14 are partially cutaway side views showing the operation. 8: winding drive device, 11, 60: electric motor, 17, 54: rotary shaft,
20, 53: Take-up drum, 21, 63: Main body, 22, 64: Actuator, 2
4, 67: swing axis, 30: wire, 40, 75: limit switch,
52: Screen, 62: Rotating body

Claims (2)

[Scope of utility model registration request] Claim: What is claimed is: 1. A wire connected to a wound member that is biased in the winding direction by the rotation of a rotating body in both forward and reverse directions driven by a motor is wound against the bias in the winding direction. take,
Alternatively, in a winding drive device which is adapted to be drawn out in accordance with a bias in the winding direction, the rotating body is provided with a main body that rotates concentrically with a rotation shaft driven by the motor, and a position that is eccentric from a rotation center of the main body. An operating body supported by a swing shaft, and the winding end of the wire is connected to a position of the operating body that is separated from the swing shaft, and the operating body connects the wire to the rotating body. Between an abutting state in which the wire approaches the rotation center of the main body and abuts the main body, and a separated state in which the wire is unwound from the rotary body to be separated from the rotation center of the main body and protrude outward. A motor for use in a winding drive device, which is provided with a switch that is capable of swinging and that is provided in the vicinity of the rotating body and that is pressed by the operating body in a separated state of the operating body to stop the drive of the motor. Stop apparatus. 2. A winding drive device for winding or unwinding a member to be wound by rotating a winding body in both forward and reverse directions by driving a motor. A body that rotates integrally with the body and a rotating body composed of an operating body supported by a swing shaft at a position eccentric from the center of rotation of the body are mounted, and the rotating body of the operating body is separated from the swing shaft. A contacting state in which the winding ends of the wound member are connected, and the operating body approaches the rotation center of the main body and comes into contact with the main body by winding the wound member around the winding body. , By allowing the wound member to be unwound from the winding body to swing between a separated state in which the wound member is separated from the center of rotation of the main body and protrudes outward, and the operating body is provided in the vicinity of the rotating body. In the separated state, the switch is pressed by the actuating body to stop the driving of the motor. Motor stop device in take up drive mechanism, characterized in that a switch.