JP6791694B2 - Winding drive - Google Patents

Description

The present application relates to an electric take-up drive device used for a window opening / closing device.

For example, in the invention described in Patent Document 1, the wire is wound by rotating the electric motor in the normal direction, and the wound wire is sent out by rotating the electric motor in the reverse direction.

Jitsufuku No. 7-32875

A window opening / closing device that uses the elastic force or gravity of a spring or damper to generate a force (hereinafter referred to as a release force) for opening a window has been put into practical use. The take-up drive device closes the window by rotating the take-up drum in the normal direction against the release force and taking up the wire. Then, when the take-up drum becomes rotatable, the take-up drum is reversed by the release force, and the wound wire is rewound and released.

However, when the wire is rewound and released by the release force, the rotor of the electric motor rotates with the take-up drum, so even if the window is completely opened and the release force is lost, the rotor has rotational inertia. May continue to rotate.

If the rotor continues to rotate, the unwound and released wire will be wound up by the winding drum that continues to reverse, which may cause the open window to close again. That is, when the wire is rewound and released, the rotor does not stop at the timing when the window is completely opened, so that the wire is wound again by the reversing winding drum.

In view of the above points, the present application provides a winding drive device capable of suppressing the wire from being wound again on the reversing winding drum.

In the present application, the take-up drum (11) for winding the wire (9), the wire (9) is wound when the wire (9) is rotated in the first direction, and the wire is wound when the wire (9) is rotated in the second direction. An electric motor (12) having a take-up drum (11) that rewinds and releases (9) and a rotor (12A) and a stator (12B), and exerts a rotational force for rotating the take-up drum (11). The electric motor (12) that is generated and the transmission mechanism (13) that transmits the rotational force to the take-up drum (11), and the rotor (12A) in the direction that rotates the take-up drum (11) in the second direction. ) Rotates, it is provided with a transmission mechanism (13) capable of blocking the transmission of the rotational force.

As a result, even if the rotor (12A) does not stop when the window is completely opened, the take-up drum (11) receives a rotational force from the rotor (12A) and does not rotate in the second direction. Therefore, it is possible to prevent the wire (9) from being wound up again. The "first direction" corresponds to the above-mentioned "forward rotation", and the "second direction" corresponds to the above-mentioned "reverse rotation".

Incidentally, the reference numerals in the parentheses are examples showing the correspondence with the specific configurations and the like described in the embodiments described later, and the present invention is limited to the specific configurations and the like shown in the symbols in the parentheses. It's not something.

It is a perspective view of the window opening / closing device 1 which concerns on embodiment of this invention. It is a figure which shows the winding drive device 10 which concerns on 1st Embodiment of this invention. It is an exploded perspective view of the winding drive device 10 which concerns on 1st Embodiment of this invention. It is an exploded perspective view of the winding drive device 10 which concerns on 1st Embodiment of this invention. A to C are operation explanatory views of the take-up drive device 10 which concerns on 1st Embodiment of this invention. A and B It is a figure which shows the winding drive device 10 which concerns on 2nd Embodiment of this invention.

The "embodiment of the invention" described below is an example of an embodiment belonging to the technical scope of the present invention. That is, the matters specifying the invention described in the claims are not limited to the specific configuration, structure, etc. shown in the following embodiments.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The arrows and the like indicating the directions attached to each figure are described in order to make it easier to understand the relationship between each figure. The present invention is not limited to the directions attached to each figure.

At least one member or part described with a reference numeral is provided, except when otherwise specified such as "one". That is, two or more of the members may be provided.
(First Embodiment)
1. 1. Outline of Window Opening / Closing Device The present embodiment applies the present invention to the winding drive device 10 used in the window opening / closing device 1 shown in FIG. The window opening / closing device 1 according to the present embodiment is an opening / closing device for opening / closing a skylight, and includes a link mechanism 5, a damper 7, a winding drive device 10, and the like.

The link mechanism 5 is a mechanism for displacing the window body 3 between the closed position and the open position. The window body 3 is a member that opens and closes the window opening 2 by being displaced with respect to the window opening 2. The link mechanism 5 according to this embodiment is an X-link mechanism.

The damper 7 exerts an elastic force (hereinafter, referred to as an opening force) that displaces the window body 3 toward the opening position by a spring (not shown) stored in the tubular cylinder. The damper 7 according to the present embodiment always exerts an opening force on the window body 3 via the link mechanism 5.

The take-up drive device 10 is an electric take-up drive device capable of winding the wire 9 and rewinding and releasing the wound wire 9. That is, when the take-up drive device 10 is in a state where it can be rewound and released, the wire 9 is rewound by the opening force of the damper 7, so that the window body 3 is displaced to the open position side.

When the window body 3 reaches the open position, the displacement of the window body 3 is stopped by the stopper (not shown) provided on the window body 3 or the link mechanism 5. Therefore, unless the wire 9 is wound up, the window body 3 stays in the open position.

When the take-up drive device 10 is energized, the take-up drive device 10 winds the wire 9 while resisting the tension due to the opening force. The tension generated in the wire 9 by the winding force of the winding drive device 10 operates the link mechanism 5 so as to displace the window body 3 toward the closed position side. Therefore, when the winding drive device 10 is energized, the window body 3 is displaced toward the closed position side.

2. 2. Winding drive device 2.1 Outline of the winding drive device As shown in FIG. 2, the winding drive device 10 has at least a winding drum 11, an electric motor 12, a transmission mechanism 13, and the like. The take-up drum 11 is a member for taking up the wire 9, and takes up the wire 9 when it is rotated in the first direction, and rewinds and releases the wire 9 when it is rotated in the second direction. ..

The second direction is opposite to the first direction. Hereinafter, the rotation of the take-up drum 11 in the first direction is also referred to as "the take-up drum 11 rotates forward". The rotation of the take-up drum 11 in the second direction is also referred to as "reversing the take-up drum 11."

The electric motor 12 is an electric motor having a rotor 12A and a stator 12B, and generates at least a rotational force for rotating the take-up drum 11 in the normal direction. In the present embodiment, the rotational force generated by the electric motor 12 is transmitted to the take-up drum 11 via the speed reduction mechanism 14.

Therefore, depending on the configuration of the speed reduction mechanism 14, the direction of rotation of the rotor 12A and the direction of rotation of the take-up drum 11 may not match or may match. Hereinafter, when the take-up drum 11 is rotating normally, it is said that the rotor 12A is rotating normally. When the take-up drum 11 is reversed, it is said that the rotor 12A is reversed.

The transmission mechanism 13 is a mechanism capable of transmitting the rotational force of the electric motor 12 to the take-up drum 11 and blocking the transmission of the rotational force when the rotor 12A reverses. That is, the transmission mechanism 13 can transmit the rotational force to the take-up drum 11 when the rotor 12A is rotating forward, and can block the transmission of the rotational force when the rotor 12A is rotating in the reverse direction. is there.

The brake device 15 is a braking device for regulating the rotation of the rotor 12A. The braking device 15 exerts a braking force on the rotor 12A to prevent the rotation of the rotor 12A at least when the power supply to the electric motor 12 is cut off.

As a general rule, the brake device 15 does not apply a braking force to the rotor 12A when the electric motor 12 is energized. The brake device 15 according to the present embodiment is a friction type braking device that generates a braking force by applying a frictional force to a rotor (not shown) that rotates together with the rotor 12A.

2.2 Details of transmission mechanism <Structure of transmission mechanism>
The transmission mechanism 13 is located between the output shaft 14A and the take-up drum 11 in the rotational force transmission path from the electric motor 12 to the take-up drum 11. The output shaft 14A is a shaft for outputting the rotational force generated by the electric motor 12 to the take-up drum 11 side.

In this embodiment, the reduction mechanism 14 is provided on the output side of the electric motor 12. Therefore, the output shaft 14A according to the present embodiment coincides with the output shaft of the speed reduction mechanism 14. Incidentally, the electric motor 12 according to the present embodiment is a geared motor in which the reduction mechanism 14 and the electric motor 12 are integrated.

As shown in FIG. 3, the transmission mechanism 13 has at least a support portion 13A, a swivel member 13B, and the like. The support portion 13A is a portion for rotatably supporting the take-up drum 11 at a position coaxial with the output shaft 14A.

As shown in FIG. 4, the support portion 13A is provided with an insertion hole 13J and a keyway 13K. Insertion hole 13J is a hole shank 14 A is inserted. The key groove 13K is a groove-shaped recess into which a wedge 14B (hereinafter, referred to as a key 14B) such as a parallel key is inserted.

Shank 14 A and the key 14B, as shown in FIG. 2, and is retained by a set screw 14C. In the present embodiment, the slide bearing portion 16 is arranged between the support portion 13A and the take-up drum 11. The retaining ring 14D prevents the take-up drum 11 from falling off from the support portion 13A or the like.

The inner peripheral surface of the slide bearing portion 16 is in contact with the circumferential outer peripheral surface of the support portion 13A, and the outer peripheral surface is in sliding contact with the inner peripheral surface of the take-up drum 11. Therefore, the set screw 14C is in a state of being covered by the slide bearing portion 16 and is in a state of being prevented from coming off by the slide bearing portion 16.

As shown in FIG. 4, the swivel member 13B is a member that can rotate integrally with the output shaft 14A and can rotate independently of the take-up drum 11. That is, in the present embodiment, since the swivel member 13B and the support portion 13A are integrally molded products, the support portion 13A rotates integrally with the swivel member 13B.

The take-up drum 11 is rotatable with respect to the support portion 13A via the slide bearing portion 16. Therefore, the swivel member 13B can rotate integrally with the output shaft 14A and can rotate independently of the take-up drum 11.

The swivel member 13B has a locking portion 13C. Engaging portion 13C has a possible disjunction displaced relative to the locking portion 13F provided in the winding drum 11, the rotational center of the pivot member 13B, that is located at a site displaced from the shaft portion 14 A ..

<Operation of transmission mechanism>
As shown in FIG. 5A, when the first locking surface 13D of the locking portion 13C comes into contact with the first locked surface 13H of the locked portion 13F and becomes locked, the rotation in the forward rotation direction The force can be transmitted to the take-up drum 11.

For example, when the swivel member 13B is in the position indicated by the alternate long and short dash line, the rotational force of the electric motor 12 is not transmitted to the take-up drum 11 because the locking portion 13C and the locked portion 13F are in the unlocked state. ..

When the rotor 12A rotates in the normal direction and the swivel member 13B comes into contact with the position indicated by the solid line from the position indicated by the alternate long and short dash line, that is, the first locking surface 13D and the first locked surface 13H come into contact with the locking portion 13C. When the locked portion 13F is locked, the forward rotation force of the rotor 12A is transmitted to the take-up drum 11, and the wire 9 is taken up.

When the rotor 12A reverses while the take-up drum 11 is stopped, as shown in FIG. 5B, the swivel member 13B is rotationally displaced in a direction in which the first locking surface 13D is separated from the first locked surface 13H. To do. As a result, the locking portion 13C and the locked portion 13F are not locked, so that the rotational force of the electric motor 12, that is, the reverse rotational force of the rotor 12A is not transmitted to the take-up drum 11.

3. 3. Features of the winding drive device according to the present embodiment When the braking force of the braking device 15 disappears when the window body 3 is in the closed position, for example, the wire 9 is rewound by the opening force of the damper 7 and the winding drum. When the 11 rotates in the reverse direction, the first locking surface 13D and the first locked surface 13H come into contact with each other, so that the swivel member 13B reverses from the winding drum 11 via the first locked surface 13H. It receives a rotational force in the direction (see FIG. 5A).

Therefore, the swivel member 13B and the rotor 12A rotate integrally with the take-up drum 11 in the reverse direction. Then, when the window body 3 reaches the open position, the displacement of the window body 3 is stopped, so that the rewinding of the wire 9 is stopped and the rotation of the take-up drum 11 is stopped.

Since the moment of inertia of the rotor 12A is larger than that of the take-up drum 11 and the angular velocity of the rotor 12A is larger than that of the take-up drum 11 due to the reduction mechanism 14, even if the take-up drum 11 is stopped. The rotor 12A continues to rotate in the reverse direction.

However, when the rotor 12A rotates in the reverse direction while the take-up drum 11 is stopped, the swivel member 13B rotates in the reverse direction. Therefore, as shown in FIG. 5B, the first locking surface 13D is the first. Separated from the locked surface 13H. That is, the swivel member 13B is swiveled and displaced from the locked state shown by the alternate long and short dash line in FIG. 5B to the unlocked state shown by the solid line in FIG. 5B.

As a result, the locking portion 13C and the locked portion 13F are not locked, so that the rotational force of the electric motor 12, that is, the reverse rotational force of the rotor 12A is not transmitted to the take-up drum 11. Therefore, even if the rotor 12A does not stop when the window is completely opened, the take-up drum 11 receives a rotational force from the rotor 12A and does not rotate in the second direction, so that the wire 9 is wound again. It is possible to prevent it from being taken.

After the take-up drum 11 is stopped, the rotor 12A (swivel member 13B) with respects the take-up drum 11 until the second locking surface 13E contacts the second locked surface 13G, as shown in FIG. 5C. Can rotate. The rotation resistance of the reduction mechanism 14 or the like usually stops the rotation of the rotor 12A before the second locking surface 13E comes into contact with the second locked surface 13G.

In the present embodiment, the transmission mechanism 13 is located between the output shaft 14A and the take-up drum 11 in the rotational force transmission path. As a result, it is possible to prevent the wire 9 from being wound again by the winding drum 11 which reverses with a simple structure as compared with the structure in which the transmission mechanism 13 is built in the electric motor 12 or the like.

In the present embodiment, a slide bearing portion 16 is arranged between the support portion 13A and the take-up drum 11, and the support portion 13A rotates integrally with the swivel member 13B. As a result, the take-up drum 11 can be rotated smoothly.

(Second Embodiment)
In the above-described embodiment, the position of the swivel member 13B in the rotation axis direction is immovable regardless of whether the swivel member 13B is in the forward rotation or the reverse rotation. On the other hand, in the present embodiment, the swivel member 13B rotates at a position in the direction of the rotation axis where the locking portion 13C and the locked portion 13F can come into contact with each other during normal rotation, and the locking portion 13C is rotated during reverse rotation. The swivel member 13B is displaced to a position in the direction of the rotation axis where the locked portion 13F and the locked portion 13F cannot be contacted.

That is, in the present embodiment, as shown in FIG. 6A, the slide bearing portion 16 is abolished, and the male screw portion 17A is provided on the outer peripheral surface of the support portion 13A. The take-up drum 11 is provided with a female screw portion 17B that meshes with the male screw portion 17A.

The male screw portion 17A and the female screw portion 17B are configured so that when the support portion 13A (swivel member 13B) rotates in the forward rotation direction, the locking portion 13C is displaced in the rotation axis direction and approaches the locked portion 13F. Has been done.

That is, for example, when the direction of forward rotation is rightward, the male threaded portion 17A and the female threaded portion 17B are composed of right-handed threads. Therefore, when the rotor 12A, that is, the support portion 13A and the swivel member 13B rotate in the reverse direction (for example, to the left) while the take-up drum 11 is stopped, the locking portion 13C is separated from the locked portion 13F. It is displaced in the direction of the rotation axis so as to (see FIG. 6B).

When the locking portion 13C is separated from the locked portion 13F to a predetermined dimension, the retaining ring 14D comes into contact with the end face of the winding drum 11, so that the supporting portion 13A is separated from the winding drum 11. Is regulated (see Figure 6B).

Therefore, in the present embodiment, even if the swivel member 13B rotates 360 degrees or more in the reverse direction with respect to the take-up drum 11, the rotational force in the reverse direction is transmitted to the take-up drum 11. There is no such thing.

Since the same configuration requirements and the like as those in the above-described embodiment are designated by the same reference numerals as those in the above-described embodiment, duplicate description will be omitted.
(Other embodiments)
The transmission mechanism 13 according to the embodiment of the above-described embodiment blocks the transmission of the rotational force at the time of reverse rotation by putting the locking portion 13C and the locked portion 13F in the unlocked state. However, the invention disclosed in the present specification is not limited to this. That is, for example, the transmission mechanism 13 may be configured by a so-called "one-way clutch mechanism".

In the above embodiment, the transmission mechanism 13 is located between the output shaft 14A and the take-up drum 11 in the rotational force transmission path. However, the invention disclosed in the present specification is not limited to this.

In the above-described embodiment, the slide bearing portion 16 is arranged between the support portion 13A and the take-up drum 11. However, the invention disclosed in the present specification is not limited to this. That is, for example, the outer peripheral surface of the support portion 13A may be brought into direct sliding contact with the inner peripheral surface of the take-up drum 11.

In the above-described embodiment, the support portion 13A and the swivel member 13B are integrally molded products. However, the invention disclosed in the present specification is not limited to this. That is, the support portion 13A and the swivel member 13B may be separated from each other in their functions.

In this case, the rotational force of the electric motor 12 needs to be transmitted to the swivel member 13B without going through the support portion 13A. Specifically, the support portion 13A may only support the take-up drum 11, and for example, the rotational force may be transmitted to the swivel member 13B via a gear or the like.

Furthermore, the present invention is not limited to the above-described embodiment as long as it conforms to the gist of the invention described in the claims. Therefore, at least two of the plurality of embodiments described above may be combined.

1 ... Window opening / closing device 2 ... Window opening 3 ... Window body 5 ... Link mechanism 7 ... Damper 9 ... Wire 10 ... Winding drive device 11 ... Winding drum 12 ... Electric motor 12A ... Rotor 12B ... Stator 13 ... Transmission mechanism 13A ... Support part 13J ... Insertion hole 13K ... Key groove 13B ... Swivel member 13C ... Locking part 13F ... Locked part 13D ... First locking surface 13H ... First locked surface 13E ... Second locking surface 13G … Second locked surface 14… Deceleration mechanism 14A… Output shaft

Claims (4)

It is possible to wind up the wire used for a window opening / closing device that opens a window using elastic force or gravity, or a window opening / closing device that closes a window using elastic force or gravity, and to rewind and release the wound wire. In the electric take-up drive device
A take-up drum for winding a wire, which winds the wire when it is rotated in the first direction and rewinds and releases the wire when it is rotated in the second direction.
An electric motor having a rotor and a stator, and an electric motor that generates a rotational force to rotate the take-up drum.
A transmission mechanism that transmits the rotational force to the take-up drum, and can block the transmission of the rotational force when the rotor rotates in the direction in which the take-up drum is rotated in the second direction. A take-up drive device including a transmission mechanism. An output shaft for outputting the rotational force to the take-up drum side is provided.
The winding drive device according to claim 1, wherein the transmission mechanism is located between the output shaft and the winding drum in the rotational force transmission path. The transmission mechanism
A support portion that rotatably supports the take-up drum at a position coaxial with the output shaft.
A swivel member that rotates integrally with the output shaft and can rotate independently of the take-up drum, and is a locking member that can be detached and displaced with respect to a locked portion provided on the take-up drum. It is equipped with a swivel member that holds the part at a position deviated from the center of rotation.
The take-up drive device according to claim 2, wherein the rotational force can be transmitted when the locking portion comes into contact with the locked portion and is in a locked state. A slide bearing portion is provided between the support portion and the take-up drum.
The take-up drive device according to claim 3, wherein the support portion rotates integrally with the swivel member.