JP6677577B2 - Braking equipment, automatic moving equipment and fittings - Google Patents

Description

  The present invention relates to a braking device that brakes movement of a door or the like, an automatic moving device, and a fitting.

BACKGROUND ART Conventionally, as a door braking device, a door braking device including a main body of a braking device, a hollow shaft rotatably penetrating the main body, and a spiral rod passing through the hollow shaft has been proposed (see Patent Document 1). ). A braking fluid is stored in a space between the main body and the hollow shaft. The hollow shaft is screw-engaged with the spiral rod so as to be rotatable by relatively moving the spiral rod in the axial direction. The main body is fixed to an opening frame in which the door is slidably arranged in the opening and closing direction, and the spiral rod is fixed to the door.
In the door braking device, when the door is closed and moved, the spiral rod moves in the axial direction relatively to the hollow shaft, and the hollow shaft is rotated with respect to the main body by this movement, and the resistance force based on the braking fluid is exerted. Is generated to brake the closing movement of the door.

Japanese Patent No. 4510608

  By the way, in the door braking device described in Patent Literature 1, since the hollow shaft continues to rotate during the closing movement of the door, when the movement of the door is not slow and does not strongly collide with the opening frame, no braking is required. Therefore, there is a possibility that the door may not be easily moved.

  An object of the present invention is to provide a braking device, an automatic moving device, and a fitting that can be braked as necessary in moving a door or the like.

The braking device according to the present invention includes a first rotating body, a second rotating body with which the first rotating body is engaged so that rotation can be transmitted, and a receiving portion formed on the first rotating body and the second rotating body. And a case for accommodating the first rotator, the second rotator, and the urging member, the urging member being interposed between the first rotator and the second rotator to urge the first rotator in the direction away from the second rotator. When, said input capable spiral rod moving force to the first rotary body and said second rotary body inserted through one axial side directed from the first rotor side to said second rotary body side with Ru Tei, said case And a resistor provided between the second rotator and generating a resistance to the rotation of the second rotator, wherein the first rotator is provided with the urging member when the spiral rod is stationary. By the force against the second rotating body Is disengaged spaced in a direction other side, the first rotating body is threaded engaged with the rotatably the spiral rod by movement in the axial direction of the spiral rod, the first rotating body, the spiral according to the moving speed of the one axial side of the rod, before and Kihi engagement, at a position close to one axial side for the second rotary body against the urging force of the urging member It is characterized by switching between an engaged state in which rotation can be transmitted.

In the braking device of the present invention, in a state where the closing face material such as the door is stationary, the first rotating body is urged in the separating direction by the urging member and is disengaged from the second rotating body in the other axial direction. State. When the spiral rod slowly moves to one side in the axial direction due to the movement of the closing face material, the disengagement state of the first rotating body with respect to the second rotating body is maintained by the biasing member, so that the closing face material is not braked. It can move smoothly. The first rotating member approaches the one axial side for in the second rotary member against the urging force of the urging member while rotating by increasing the moving speed of the spiral rod. Even when approached in this way, while the first rotating body is still in the disengaged state with the second rotating body, the rotation is not transmitted from the first rotating body to the second rotating body, so the rotation of the second rotating body is not performed. No resistance is generated by the resistor. Thereby, the closing face material can be smoothly moved without applying the resistance force of the resistor to the closing face material.
Then, according to a further increase of the axial movement speed of the spiral rod, and the first rotating body is further closer to one axial side for the second rotary body against the urging force of the urging member engaging when a focus state, the rotation of the first rotating member is transmitted to the second rotating body. As a result, the second rotating body rotates in the case to generate a resistance force on the resistor, and the resistance force of the resistor is applied to the closing face material, so that the movement of the closing face material can be braked.
In the present invention, the closing face material includes a door, a door, a shoji, a shutter, a partition, a gate, and the like.

In the braking device according to the aspect of the invention, it is preferable that the first rotating body and the second rotating body have engagement teeth that engage with each other.
According to such a configuration, since the engagement and engagement are performed by the engagement teeth described above, the amount of rotation until the first rotary body engages with the second rotary body depends on the arrangement angle of the engagement teeth described above. Can be set. Accordingly, for example, by increasing the number of engaging teeth to form a small arrangement angle, the amount of rotation until the first rotating body is engaged with the second rotating body can be reduced.
Further, for example, by reducing the number of engaging teeth, the engaging teeth can be formed large, and the strength can be improved.

In the braking device according to the aspect of the invention, the engagement teeth of the first rotating body may have a first meshing tooth surface formed along a rotation axis direction of the first rotating body, and a sharp tooth together with the first meshing tooth surface. A first non-meshed tooth surface forming a first tooth tip in a shape of a circle, and the engaging teeth of the second rotating body are formed in a second meshing direction along a rotation axis direction of the second rotating body. A tooth surface and a second non-meshed tooth surface forming a pointed second tooth tip with the second meshing tooth surface, and in the engaged state, the first meshing tooth surface and the Preferably, the second meshing tooth surfaces mesh.
According to such a configuration, since the first tooth tip and the second tooth tip are each formed in a pointed shape, when the first rotating body approaches and engages with the second rotating body, the first tooth tip and the second tooth tip are formed. Collision with the second tooth tip can be suppressed, and the first meshing tooth surface and the second meshing tooth surface can be smoothly meshed.
Further, since the first meshing tooth surface and the second meshing tooth surface are formed along the rotation axis direction, when transmitting the rotation of the first rotating body about the spiral rod to the second rotating body, No force is generated between the first meshing tooth surface and the second meshing tooth surface in the direction of disengaging. For this reason, the engagement state between the first rotating body and the second rotating body can be maintained.

In the braking device according to the aspect of the invention, it is preferable that the engagement teeth of the second rotating body be longer than the engagement teeth of the first rotating body.
According to such a configuration, even when the first rotating body and the second rotating body are engaged, the first tooth tip of the engaging teeth of the first rotating body does not contact the end face of the second rotating body, The first tooth tip is not crushed and deformed. For this reason, for example, when the first tooth tip is deformed due to a collision, the first tooth tip may interfere with other components when the first rotating body rotates, but in the present invention, as described above, the first tooth tip Is not deformed by the collision, so that even when the first rotating body rotates, the first tooth tip does not interfere with other components, and the smooth rotation of the first rotating body can be maintained.

In the braking device of the present invention, it is preferable that the spiral rod has a different thread pitch along the axial direction.
According to such a configuration, the moving force applied to the first rotating body by the axial movement of the spiral rod can be adjusted by the screw pitch described above.

In the braking device of the present invention, the one end side of the spiral rod is formed to have a larger thread pitch than the other end side, and the first rotating body is moved from one end side of the spiral rod by the axial movement of the spiral rod. It is preferable to move relatively to the end side.
According to such a configuration, it is not necessary to brake the movement of the closing face material at the start of the movement in which the closing face material is not accelerated so much, but the thread pitch of the first rotating body is smaller than that of the other end of the spiral rod. Since it is in a state of being screw-engaged with one end of the spiral rod, compared to a state in which the first rotator is screw-engaged with the other end of the spiral rod, the moving force applied to the first rotator by the axial movement of the spiral rod is reduced. Can be smaller. Therefore, the closed face material can be smoothly moved from the start of the movement of the closed face material to before the end of the movement.

The automatic moving device of the present invention includes a first rotating body, a second rotating body with which the first rotating body is rotatably engaged, and a direction in which the first rotating body is separated from the second rotating body. A biasing member for biasing, a spiral rod inserted through the first rotating body and the second rotating body, and a braking device including a resistor that generates a resistance to the rotation of the second rotating body; An application device that applies an axial movement force to the spiral rod of the braking device, and a transmission device that enables the axial movement force of the spiral rod applied from the application device to be transmitted to the closing face material, The first rotator is rotatably screw-engaged with the spiral rod by an axial movement of the spiral rod with respect to the first rotator, and the first rotator is adapted to move in an axial direction of the spiral rod. Depending on the Switching between a disengaged state separated from the second rotating body by the biasing force of the biasing member and an engaged state engaged with the second rotating body so as to be able to transmit rotation against the biasing force of the biasing member. is configured, the applying device, coupled to said one end of the spiral rod, said transmission device, and engager connected to the other end of the spiral rod, and the engaging body said engagement body is engaged Wherein the engaging body engages with the engaged body during the movement with respect to the engaged body so that the moving force of the applying device can be transmitted to the spiral rod.

According to the automatic moving device of the present invention, it is possible to configure an automatic moving device capable of exhibiting the same operational effects as the above-described braking device of the present invention, and to relate to one of the opening side and the closed surface material side of the building. By attaching the united body and attaching the engaged body to the other of the opening side of the building and the closed face material side, the engaging body can be engaged with the engaged body by moving the closing face material. By applying a moving force in the axial direction to the spiral rod from the applying device, the closing face material can be automatically moved.
Further, when the first rotating body of the braking device engages with the second rotating body due to the axial movement of the spiral rod, the movement of the closing panel can be braked in the same manner as in the above-described braking device of the present invention.

In the automatic moving device of the present invention, the spiral rod has a screw portion and a flat plate portion, and the applying device includes a rotating member through which the spiral rod is inserted, and a torsion spring attached to the rotating member. The rotating member is screw-engaged with the screw portion of the spiral rod when the engaging body and the engaged body are in the engaged state, and the engaging body is in a state where the flat plate portion of the spiral rod is inserted through the rotating member. Preferably, the engagement with the engaged body is released.
According to such a configuration, when the rotating member is screw-engaged with the screw portion of the spiral rod, the elastic force in the rotational direction of the torsion spring is applied to the spiral rod as an axial moving force, and the movement of the closing face material is performed. Can be energized.
Further, since the flat portion of the spiral rod is inserted through the rotating member, the elastic force in the rotating direction of the torsion spring is not converted into the axial moving force of the spiral rod, and the load on the transmission device can be reduced.

In the automatic moving device of the present invention, the braking device is disposed between the applying device and the transmitting device so as to be movable along an axial direction of the spiral rod, and the first rotating body is more than the second rotating body. It is also preferable that a rebound spring that is positioned on the transmission device side and urges the braking device toward the transmission device is disposed between the braking device and the applying device.
According to such a configuration, when the first rotating body changes from the engaged state to the non-engaged state with the second rotating body in accordance with the axial movement of the spiral rod, the braking device is moved by the rebound spring to the transmission device side. , It is possible to urge the first rotating body in a direction away from the second rotating body, and it is possible to smoothly disengage the first rotating body and the second rotating body.

A fitting according to the present invention includes a closing panel that can be arranged in an opening of a building, and the automatic moving device according to the present invention described above. One of the closing panel and the opening side includes the closing member. A united body is attached, and the engaged body is attached to the other of the closed face material side and the opening side.
According to the fitting of the present invention, it is possible to configure a fitting capable of exhibiting the same operational effects as those of the automatic moving device of the present invention described above.

  Advantageous Effects of Invention According to the present invention, it is possible to provide a braking device, an automatic moving device, and a fitting that can brake as necessary when moving a door or the like.

FIG. 1 is an external appearance view showing a fitting according to an embodiment of the present invention. The perspective view which shows the automatic moving device of the fitting which concerns on the said embodiment. The perspective view showing the braking device of the fittings concerning the embodiment. Explanatory drawing which shows operation | movement of the fittings concerning the said embodiment. Explanatory drawing which shows operation | movement of the brake device of the fittings which concerns on the said embodiment. FIG. 9 is a perspective view showing a braking device according to a modification of the present invention. The perspective view showing the automatic movement device concerning the modification of the present invention. FIG. 9 is an explanatory view showing a rotating body of a braking device according to a modified example of the invention. FIG. 9 is a schematic diagram showing engagement teeth of the rotating body shown in FIG. 8.

[Configuration of the present embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, a sliding door 1 such as an entrance sliding door as a fitting according to the present embodiment opens and closes an entrance provided in an opening of a building and separating an indoor space on one side and an outdoor space on the other side. A frame body 10 framed by an upper frame 11, a lower frame 12, and left and right vertical frames 13, and two door bodies framed by an upper frame 21, a lower frame 22, left and right vertical frames 23, and a panel 24. 20 (closing face material).

Rails are formed on the upper frame 11 and the lower frame 12, and a groove forming portion that fits with the rail is formed on the upper frame 21 and the lower frame 22, and the door body 20 extends along the rail. It is slidably disposed in the frame 10.
A closer 3 (automatic closing device) as an automatic moving device that closes and moves the door body 20 is installed between the upper frame 11 and the upper frame 21.

As shown in FIG. 2, the closer 3 includes an applying device 30 that applies a moving force in the closing direction to the door body 20, a transmitting device 40 that transmits the moving force of the applying device 30 to the door body 20, A braking device 50 (damper) for braking movement in the closing direction is provided, and is attached to the U-shaped frame 4 having a U-shaped cross section except for a strike 44 described later. The U-shaped frame 4 includes a bottom piece 4A and two rising pieces 4B, and is fixed to the groove forming portion of the upper frame 21.
For convenience of explanation, FIG. 2B omits a part of the U-shaped frame 4 shown in FIG. 2A, and FIG. 2C shows a part of the U-shaped frame 4. In addition, the cylinder 31, the guide member 41, and the case 51 are omitted.

  As shown in FIGS. 2B and 2C, the application device 30 includes a tubular body 31, a torsion spring 32, a rotating member 33, and a fixing member. A torsion spring 32 is disposed inside the cylindrical body 31. The rotating member 33 is rotatably fitted to the cylindrical body 31 and has one end of a torsion spring 32 attached thereto. The fixing member 34 is fixed to the cylindrical body 31, and the other end of the torsion spring 32 is attached.

  The rotating member 33 has an end portion of a spiral rod 57 to be described later penetrated so as to be movable in the axial direction X, and has an engagement hole that can be screw-engaged with the screw portion 573 of the spiral rod 57 in the axial direction X movement. It is configured to have. The rotating member 33 does not transmit the elastic force in the rotating direction of the torsion spring 32 as the moving force in the axial direction X when the flat plate portion 571 on one end side of the spiral rod 57 is inserted, but the screw portion 573 of the spiral rod 57 In the state of the screw engagement, the elastic force in the rotational direction of the torsion spring 32 is transmitted as the moving force in the axial direction X, and the spiral rod 57 is provided with the moving force in the axial direction X for closing the door body 20.

  As shown in FIGS. 2B and 2C, the transmission device 40 includes a guide member 41, a slider 42 and a catcher 43 constituting an engaging body, and a strike 44 as an engaged body. The strike 44 is attached to the upper frame 11.

  The guide member 41 is attached to the U-shaped frame 4, and the slider 42 is fitted so as to be slidable along the axial direction X of the spiral rod 57. The guide member 41 has a guide groove forming portion 411 that forms a guide groove in which two guide pins 45 and 46 mounted on the catcher 43 are arranged. The guide groove forming portion 411 is formed so as to extend along the axial direction X, and is formed such that the left end portion shown in FIG. 2B is inclined downward with respect to the axial direction X.

  The slider 42 is connected to a flat plate portion 572 at the other end of the spiral rod 57. The slider 42 has an elongated hole through which the guide pins 45 and 46 are inserted. The long hole through which the guide pin 45 is inserted is formed to extend along the axial direction X of the spiral rod 57. The long hole into which the guide pin 46 is inserted is formed to be inclined downward with respect to the axial direction X.

  The catcher 43 has a pair of protrusions 431 and 432, and the strike 44 can be engaged between the protrusions 431 and 432. The catcher 43 is connected to the slider 42 via the guide pins 45 and 46 described above. The protrusion 431 of the catcher 43 protrudes from the slider 42 and the guide member 41. The protrusion 432 of the catcher 43 can move up and down in the vertical direction when the slider 42 is moved, and the guide pin 46 is located at the left end inclined downward below the guide groove forming portion 411 shown in FIG. Is immersed in the slider 42 and the guide member 41, and protrudes from the slider 42 and the guide member 41 when the guide pin 46 is located on the right side of the left end of the guide groove forming portion 411.

  As shown in FIG. 3, the braking device 50 includes a case 51, holding members 52 and 53, a first rotating body 54, a second rotating body 55, a coil spring 56 as an urging member, a spiral rod 57, And a damping grease 58 (a viscous body) as a resistor.

  The pressing member 52 is mounted on the end of the case 51 on the application device 30 side, and the pressing member 53 is mounted on the end of the case 51 on the transmission device 40 side. The first rotating body 54 and the second rotating body 55 are rotatably arranged in the axial direction X inside the case 51. The coil spring 56 is interposed between the first rotating body 54 and the second rotating body 55. The pressing members 52 and 53 press the first rotating body 54 and the second rotating body 55 by the elastic force of the coil spring 7 described later.

  The spiral rod 57 has flat portions 571 and 572 formed at both ends, and a screw portion 573 formed between the flat portions 571 and 572. The pressing members 52 and 53, the first rotating body 54, the coil spring 56, and the second It is inserted through the rotating body 55. The thread pitch of the thread portion 573 is equal. In the present embodiment, the spiral rod 57 is screw-engaged with the first rotating body 54 such that the spiral rod 57 can move about 16 mm in the axial direction X by 0.5 rotation. The damping grease 58 is sealed in a space between the case 51 and a later-described rotating main body 551 of the second rotating body 55. O-rings are arranged at both ends of the rotating main body 551.

The case 51 is formed in a cylindrical shape with an inner peripheral surface having a circular cross section. The diameter of a portion of the inner peripheral surface of the case 51 where the later-described rotating main body 551 of the second rotating body 55 is arranged is formed smaller than the diameter of the other portion of the inner peripheral surface.
The contact surfaces 511 (see FIG. 2 (B)) of the outer peripheral surface of the case 51 that respectively contact the two rising pieces 4B of the U-shaped frame 4 are formed flat. In the present embodiment, when the braking device 50 is attached to the U-shaped frame 4, the contact surfaces 511 contact the rising pieces 4B, so that the case 51 is prevented from rotating. The case 51 is disposed between the application device 30 and the transmission device 40 so as to be movable along the axial direction X of the spiral rod 57.

The first rotating body 54 includes a coupling member 541 and a slide member 545.
The coupling member 541 is formed in a cylindrical shape, and is formed on an engagement tooth 542 formed at an end (abutting portion with the second rotary body 55) on the second rotary body 55 side and on an inner peripheral surface. And a spring receiving portion (receiving portion) (not shown). The spring receiving portion receives the end of the coil spring 56 on the first rotating body 54 side.
The engagement teeth 542 are formed so as to protrude toward the second rotating body 55, and are intermittently arranged in the circumferential direction (rotation direction) of the first rotating body 54. In the present embodiment, the number of engaging teeth 542 is set to three, and the engaging teeth 542 have the same shape and are arranged at equal intervals.

For example, when the diameter of the coupling member 541 is about 14 mm, the number of the engagement teeth 542 may be set to 3 to 12.
Here, when the number of the engagement teeth 542 is set to be large, the interval between the engagement teeth 542 becomes small, and the engagement teeth 542 are required to engage with the engagement teeth 553 of the coupling portion 552 described later. The amount of rotation of the first rotating body 54 can be reduced. When the number of teeth of the engaging teeth 542 is set to be small, the width of the engaging teeth 542 in the circumferential direction can be increased, and the strength of the engaging teeth 542 can be improved.
The number and shape of the engagement teeth 542 can be set according to the diameter of the coupling member 541 in consideration of the amount of rotation of the first rotating body 54 required for meshing and the strength of the engagement teeth 542. .
The shape of the engaging teeth 542 may be a rectangular shape or a triangular shape inclined with respect to the rotation direction. By adopting this triangular shape, the engagement teeth 542 can be configured to be more easily engaged than a rectangular shape.

The slide member 545 is formed in a tubular shape, and has a screw engaging portion (not shown) having a substantially rectangular cross section which is screw-engaged with the screw portion 573 of the spiral rod 57 inside.
The outer peripheral surface of the slide member 545 is formed in a circular cross section, and a part thereof is formed as an enlarged diameter portion 543. A coupling member 541 is attached to a portion of the slide member 545 closer to the second rotating body 55 than the enlarged diameter portion 543. A portion of the slide member 545 closer to the holding member 53 than the enlarged diameter portion 543 may be slidably and rotatably fitted in the holding member 53 along the axial direction X.
When the spiral rod 57 moves in the axial direction X with respect to the first rotary body 54, the first rotary body 54 rotates about the axis of the spiral rod 57. When the moving speed at which the spiral rod 57 moves in the axial direction X increases, the frictional force between the screw portion 573 of the spiral rod 57 and the screw engaging portion of the first rotating body 54 increases in accordance with the increase of the moving speed. Then, the first rotating body 54 approaches and moves toward the second rotating body 55 against the elastic urging force of the coil spring 56.
In addition, the first rotating body 54 may be configured by a combination of the coupling member 541 and the slide member 545 that are separate bodies, or may be configured by the coupling member 541 and the slide member 545 that are integrated. Good.

The second rotating body 55 has a rotating main body 551 and a coupling part 552.
The rotating main body 551 is formed in a cylindrical shape, has one end slidably in contact with the pressing member 52, and is continuous with the coupling part 552 at the other end.
The coupling portion 552 is formed in a cylindrical shape having a diameter larger than that of the rotation main body portion 551, and has an engagement tooth 553 formed to protrude toward the first rotary body 54 and an inner peripheral surface. A spring receiving portion (receiving portion) (not shown). The spring receiving portion receives the end of the coil spring 56 on the second rotating body 55 side.
A spiral rod 57 is inserted through the second rotating body 55 so as to be movable in the axial direction X. The second rotating body 55 is arranged rotatably about the axis of the spiral rod 57.

  The engaging teeth 553 are formed so as to protrude toward the first rotating body 54, and a plurality of the engaging teeth 553 are intermittently arranged in the circumferential direction (rotation direction) of the second rotating body 55. In the present embodiment, the number of teeth of the engagement teeth 553 is set to three, and the engagement teeth 553 have the same shape and are arranged at equal intervals.

For example, when the diameter of the coupling portion 552 is about 14 mm, the number of the engagement teeth 553 may be set to 3 to 12.
Here, when the number of the engagement teeth 553 is set to be large, the interval between the engagement teeth 553 becomes small, and the engagement between the engagement teeth 553 and the engagement teeth 542 becomes necessary. The amount of rotation can be reduced. When the number of teeth of the engagement teeth 553 is set to be small, the width of the engagement teeth 553 in the circumferential direction can be increased, and the strength of the engagement teeth 553 can be improved.
The number and shape of the engagement teeth 553 can be set according to the diameter of the coupling portion 552 in consideration of the rotation amount of the second rotating body 55 required for meshing and the strength of the engagement teeth 553. .
The shape of the engaging teeth 553 may be a rectangular shape or a triangular shape inclined with respect to the rotation direction. By adopting this triangular shape, the engagement teeth 553 can be configured to be more easily engaged than a rectangular shape.

  The coil spring 56 is disposed between the spring receiving portion of the coupling member 541 and the spring receiving portion of the coupling portion 552. The coil spring 56 elastically urges the first rotator 54 in a separating direction that separates the first rotator 54 from the second rotator 55 toward the pressing member 53, and changes the separated state between the first rotator 54 and the second rotator 55. Have maintained.

  The above-described coupling member 541, coupling portion 552, and coil spring 56 constitute a clutch mechanism. In this clutch mechanism, when the separated state between the coupling member 541 and the coupling portion 552 is maintained by the coil spring 56, the clutch member 541 is brought into a disengaged state in which rotation is not transmitted from the first rotating body 54 to the second rotating body 55. In the case where the first rotating body 54 approaches the second rotating body 55 against the elastic urging force of the coil spring 56 and the engaging teeth 542 are engaged with the engaging teeth 553, the first rotating body 54 The engagement state where rotation is transmitted to the two rotating bodies 55 is established. When the second rotating body 55 is rotated with respect to the case 51 in this engaged state, the resistance of the damping grease 58 is generated.

  Angle members 5 and 6 attached to the bottom piece 4A of the U-shaped frame 4 are provided between the applying device 30 and the braking device 50 and between the braking device 50 and the guide member 41 of the transmission device 40 (FIG. 2B). C))). A spiral rod 57 is inserted through the angle members 5 and 6. A coil spring 7 which is a rebound spring which is an elastic member is arranged between the angle member 5 and a pressing member 52 of the braking device 50. Preload is applied to the coil spring 56 between the first rotating body 54 and the second rotating body 55 by elastically urging the pressing member 52 toward the first rotating body 54 by the coil spring 7. This preload can be adjusted by interposing a spacer such as a washer between the coil spring 7 and the angle member 5.

[Operation of this embodiment]
Hereinafter, the operation of the sliding door 1 according to the present embodiment will be described.
First, the closing operation of the sliding door 1 will be described.
As shown in FIG. 4A, when the catcher 43 and the strike 44 are not in contact with each other, the slider 42 and the catcher 43 are located on the door end side with respect to the guide member 41, and the protrusion 432 of the catcher 43 is And the guide member 41. Further, since the flat plate portion 571 of the spiral rod 57 is inserted through the rotating member 33 of the applying device 30, the elastic force of the torsion spring 32 is not converted into the moving force of the spiral rod 57 in the axial direction X, and the slider 42 It is in a stationary state where it is not pulled by the braking device 50 side. Thus, the closer 3 is in a non-operation state.

When the door body 20 is operated to close and move toward the vertical frame 13 on the door end side shown in FIG. 4A, the catcher 43 approaches the strike 44, and the projection 431 of the catcher 43 contacts the strike 44. Subsequently, with the closing movement of the door body 20, the slider 42 relatively moves in the axial direction X toward the braking device 50, the guide pin 46 is guided by the guide groove forming portion 411, and the protrusion 432 of the catcher 43 is moved. It protrudes upward from the slider 42 and the guide member 41 and comes into contact with the strike 44. As a result, the catcher 43 is brought into an engaged state in which the strike 44 is sandwiched between the protrusions 431 and 432.
When the slider 42 relatively moves toward the braking device 50 due to the further closing movement of the door body 20, the insertion position of the spiral rod 57 with respect to the rotating member 33 of the applying device 30 becomes flat at the position shown in FIG. The transition from the portion 571 to the screw portion 573 is made. Thereby, the elastic force of the torsion spring 32 is transmitted to the spiral rod 57 as a moving force in the axial direction X, and the spiral rod 57 is pulled by the application device 30. At this time, since the catcher 43 is engaged with the strike 44, the door body 20 automatically moves from the position shown in FIG. 4B to the position shown in FIG. 13 to close the doorway.

In the closing movement of the door body 20 described above, the braking device 50 operates as follows.
When the spiral rod 57 moves in the axial direction X toward the application device 30 at a moving speed lower than, for example, 200 to 300 mm / S due to the closing movement of the door body 20, the first rotating body screw-engaged with the spiral rod 57. 54 rotates. At this time, a moving force in the axial direction X toward the second rotating body 55 is also applied to the first rotating body 54, but the first rotating body 54 is moved by the coil spring 56 as shown in FIG. The non-engagement state separated from 55 is maintained, rotation is not transmitted from the first rotating body 54 to the second rotating body 55, and the second rotating body 55 does not rotate with respect to the case 51. Therefore, the door body 20 smoothly closes and moves without the resistance of the damping grease 58 being applied to the spiral rod 57.

  Next, when the moving speed of the door body 20 increases to, for example, 200 to 300 mm / S or more, the moving force in the axial direction X at which the first rotating body 54 approaches the second rotating body 55 increases, and the first rotating body Reference numeral 54 denotes an engagement state in which the rotor 54 approaches the second rotating body 55 against the elastic urging force of the coil spring 56 and engages so as to transmit the rotation as shown in FIG. The rotation is transmitted to the rotating body 55, and the second rotating body 55 rotates with respect to the case 51. Therefore, the resistance of the damping grease 58 is generated and acts on the spiral rod 57, so that the closing movement of the door body 20 is braked and decelerated until the door body 20 stops.

When the door body 20 stops, the movement of the spiral rod 57 in the axial direction X with respect to the braking device 50 stops, the first rotator 54 is separated from the second rotator 55 by the elastic urging force of the coil spring 56, and the second rotator The engagement with 55 is released.
Thereafter, the application device 30 is moved at a low speed to the closing position.
Thus, the closer 3 performs the automatic closing operation and the braking operation in the closing movement of the door body 20.

  When the moving speed decreases during the closing movement of the door body 20 and the moving force of the first rotator 54 approaching the second rotator 55 is lower than the elastic biasing force of the coil spring 56, the first rotator 54 Is released from the second rotating body 55 by the coil spring 56 and the engagement is released, so that the braking of the closing movement of the door body 20 is stopped, and the closing movement operation can be performed with a small force.

Hereinafter, the opening operation of the sliding door 1 will be described.
When the door body 20 is opened and moved from the position shown in FIG. 4C by operation, the catcher 43 and the slider 42 engaged with the strike 44 separate from the braking device 50 while pulling the spiral rod 57. 4 (B), the insertion position of the rotating member 33 of the applying device 30 into the spiral rod 57 shifts from the screw portion 573 to the flat plate portion 571, and the spiral rod 57 is moved in the axial direction X based on the elastic force of the torsion spring 32. Is not applied, and the opening movement of the door body 20 becomes smooth.
Subsequently, by the opening movement of the door body 20, the guide pin 46 is guided by the left end of the guide groove forming portion 411 that is inclined downward and downward as shown in FIG. 4A, the engagement between the catcher 43 and the strike 44 is released, and the door body 20 opens and moves to a fully open position (not shown).
Here, even if the spiral rod 57 is pulled by the slider 42, the first rotating body 54 only rotates while applying a moving force in a direction away from the second rotating body 55, so that the braking device 50 It does not brake the open movement of the vehicle.
Thus, the closer 3 operates during the opening movement of the door body 20.

[Effects of the present embodiment]
(1) In the present embodiment, the braking device 50 includes the first rotator 54, the second rotator 55 with which the first rotator 54 is engaged so as to be able to transmit the rotation, and the first rotator 54 as the second rotator. A coil spring 56 for urging in a direction away from the first rotating member 55, a spiral rod 57 inserted through the first rotating member 54 and the second rotating member 55, and a damping grease 58 for generating a resistance to the rotation of the second rotating member 55. The first rotating body 54 is screw-engaged with the spiral rod 57 so as to be rotatable by the movement of the spiral rod 57 in the axial direction X with respect to the first rotating body 54. In the non-engaged state separated from the second rotating body 55 by the elastic urging force of the coil spring 56 in accordance with the movement in the axial direction X, and the rotation can be transmitted to the second rotating body 55 against the elastic urging force of the coil spring 56. To Switching between the combined engagement state.
With the above configuration, in a state where the door body 20 is stationary, the first rotating body 54 is urged in a separating direction by the coil spring 56 to be in a disengaged state separated from the second rotating body 55. When the spiral rod 57 moves in the axial direction X due to the closing movement of the door body 20, the first rotating body 54 rotates against the movement of the spiral rod 57 and resists the elastic urging force of the coil spring 56 while the second rotating body 55 rotates. Approach. Even when approaching in this manner, while the first rotating body 54 is in a disengaged state with the second rotating body 55, the rotation is not transmitted from the first rotating body 54 to the second rotating body 55, so that the second rotation No resistance of the damping grease 58 to the rotation of the body 55 is generated. Thereby, the door body 20 can be smoothly closed and moved without the resistance of the damping grease 58 being applied to the door body 20.
In addition, when the first rotating body 54 approaches the second rotating body 55 to be engaged according to the movement of the spiral rod 57 in the axial direction X, the rotation of the first rotating body 54 becomes the second rotating body. 55. As a result, the second rotating body 55 rotates to generate a resistance force on the damping grease 58, and the resistance force of the damping grease 58 is applied to the door body 20, so that the closing movement of the door body 20 can be braked.
Further, in the present embodiment, the following effects can be exhibited.
(2) The first rotating body 54 has a moving speed in the axial direction X of the spiral rod 57 with respect to the first rotating body 54, and the moving speed in the engaged state exceeds the moving speed in the non-engaged state. For this reason, when the door body 20 moves slowly, the first rotating body 54 is not engaged with the second rotating body 55, and the door body 20 can move smoothly without braking. When the moving speed of the door body 20 increases and exceeds the moving speed in the non-engaged state, the first rotating body 54 is engaged with the second rotating body 55, and the movement of the door body 20 is braked. it can.
In this way, when the door body 20 moves slowly, the door body 20 can move smoothly without braking, and when the moving speed of the door body 20 increases and braking is required, the movement of the door body 20 is braked. it can.
(3) The first rotating body 54 and the second rotating body 55 are formed with engaging teeth 542 and 553 that engage with each other. For this reason, the amount of rotation until the first rotating body 54 engages with the second rotating body 55 can be set according to the arrangement angle of the engagement teeth 542 and 553. Therefore, for example, by increasing the number of the engagement teeth 542 and 553 to reduce the arrangement angle, the amount of rotation until the first rotating body 54 engages with the second rotating body 55 can be reduced.
Further, for example, by reducing the number of the engagement teeth 542, 553, the engagement teeth 542, 553 can be formed large, and the strength can be improved.
(4) By attaching the slider 42 and the catcher 43 to the upper frame 21 and attaching the strike 44 to the upper frame 11, the catcher 43 can be engaged with the strike 44 by the closing movement operation of the door body 20, and provided in this engaged state. The door body 20 can be automatically closed and moved by applying a moving force in the axial direction X from the device 30 to the spiral rod 57.
Further, when the first rotating body 54 of the braking device 50 is engaged with the second rotating body 55 by the movement of the spiral rod 57 in the axial direction X, the closing movement of the door body 20 is performed by the braking device 50 as described above. Can brake.
Further, for example, compared to a case where the transmission device 40 is not provided and the other end of the spiral rod 57 is attached to the vertical frame 13 on the door tip side, the spiral rod 57 is moved from the door body 20 to the vertical frame on the door tip side in this embodiment. It is not necessary to extend the spiral rod 57 so that the spiral rod 57 can be shortened. Further, since the strike 44 alone can be attached to the upper frame 11 and the entire closer 3 except the strike 44 can be attached to the upper frame 21, workability can be improved.
(5) The spiral rod 57 has a screw portion 573 and a flat plate portion 571, and the applying device 30 includes the rotating member 33 through which the spiral rod 57 is inserted, and the torsion spring 32 attached to the rotating member 33. The rotating member 33 is screw-engaged with the threaded portion 573 of the spiral rod 57 when the catcher 43 and the strike 44 are engaged, and the catcher 43 is engaged with the strike 44 when the flat plate portion 571 of the spiral rod 57 is inserted through the rotating member 33. Is disengaged. For this reason, when the rotating member 33 is screw-engaged with the screw portion 573 of the spiral rod 57, the elastic force in the rotating direction of the torsion spring 32 is applied to the spiral rod 57 as a moving force in the axial direction X, and Close movement can be energized.
Further, by inserting the flat plate portion 571 of the spiral rod 57 through the rotating member 33, the elastic force in the rotation direction of the torsion spring 32 is not converted into the moving force of the spiral rod 57 in the axial direction X, and the load on the transmission device 40 is reduced. Can be reduced.
(6) The braking device 50 is disposed between the application device 30 and the transmission device 40 so as to be movable along the axial direction X of the spiral rod 57, and the first rotating body 54 is smaller than the second rotating body 55 in the transmission device 40. The coil spring 7 that urges the braking device 50 toward the transmission device 40 is disposed between the braking device 50 and the application device 30. For this reason, when the first rotating body 54 changes from the engaged state to the non-engaged state with the second rotating body 55 in accordance with the movement of the spiral rod 57 in the axial direction X, the coil spring 7 causes the braking device 50 to transmit the transmission device 40. By moving to the side, it is possible to urge the first rotating body 54 in a direction away from the second rotating body 55, and to smoothly disengage the first rotating body 54 from the second rotating body 55. It can be carried out.

[Modification]
The present invention is not limited to the configuration described in the above embodiment, and modifications within a range that can achieve the object of the present invention are included in the present invention.
For example, in the above-described embodiment, the strike 44 is attached to the upper frame 11, and the structure of the closer 3 except the strike 44 is attached to the upper frame 21. However, the present invention is not limited to this, and the strike 44 is attached to the lower frame 12. Alternatively, the structure of the closer 3 except for the strike 44 may be attached to the lower frame 22. Further, the strike 44 may be attached to the upper frame 21 or the lower frame 22, and the configuration of the closer 3 excluding the strike 44 may be attached to the upper frame 11 or the lower frame 12.

  In the above-described embodiment, the first rotating body 54 and the second rotating body 55 of the braking device 50 are formed with the engaging teeth 542 and 553 that engage with each other. May be formed with a frictional portion that comes into frictional contact with the surface.

In the above-described embodiment, the screw pitch of the screw portion 573 is the same pitch. However, the present invention is not limited to this, and the screw pitch may be varied along the axial direction X of the spiral rod 57. With this configuration, the moving force applied to the first rotating body 54 by the movement of the spiral rod 57 in the axial direction X can be adjusted.
The screw pitch may be set in consideration of a braking timing and a braking force for the closing movement of the door body 20. For example, the screw pitch on one end side (door end side) of the spiral rod 57 may be larger than the screw pitch on the other end side (door end side). In this case, the first rotating body 54 is It becomes easier to engage the second rotating body 55 in a state in which the other end 57 is screwed than in a state in which the other end 57 is screwed, and the amount of rotation of the spiral rod 57 with respect to the movement in the axial direction X is also reduced. To increase. Therefore, the closing movement can be smoothly performed at the start of the movement of the door body 20, and the closing movement can be braked at the end of the movement.

  In the above embodiment, when the catcher 43 and the strike 44 are not engaged, the rotating member 33 of the applying device 30 is connected to the flat plate portion 571 on one end of the spiral rod 57. However, the present invention is not limited to this, and the state may be such that the screw portion 573 of the spiral rod 57 is screw-engaged.

  In the above embodiment, the braking device 50 elastically urges the first rotating body 54 in the direction away from the second rotating body 55 by the coil spring 56, but is not limited thereto. For example, an elastic body such as rubber or a spring may be used. It may be elastically urged by a washer or may be urged by a magnet.

In the above embodiment, the damping grease 58 is sealed in the space between the case 51 and the second rotating body 55. However, the present invention is not limited to this. For example, one of the case 51 and the second rotating body 55 may be used as a resistor. The friction plate may be attached, and the frictional force may be generated by sliding against the other one of the case 51 and the second rotating body 55.
In this case, an adjustment screw for adjusting the position of the friction plate may be attached to the case 51 or the like, and the position of the friction plate may be adjusted by operating the adjustment screw to increase or decrease the frictional resistance.
Further, a resistor such as a damping grease 58 or a friction plate is not limited to be provided between the case 51 and the second rotating body 55. For example, a separate rotating body is attached to the spiral rod 57, and the rotating body and the second rotating body are attached. It may be provided between the body 55.

In the above embodiment, the braking device 50 in which the damping grease 58 is sealed is provided in the space between the case 51 and the second rotating body 55. However, for example, a braking device 50A shown in FIG. 6 may be provided.
The braking device 50A includes a first rotating body 54A, a second rotating body 55A, a case 59 as a resistor, a coil spring 56A as a biasing member, and a spiral rod 57.
The first rotating body 54A is screw-engaged with the spiral rod 57 and has engaging teeth 542. The first rotating body 54A is rotatably supported by the receiving member 60. The case 59 and the receiving member 60 are mounted on a frame member (not shown) fixed to the door body 20. The second rotating body 55A is formed in a substantially cylindrical shape, and the spiral rod 57 is inserted without screw engagement. The second rotating body 55A has engagement teeth 553.
The coil spring 56A is interposed between the first rotating body 54A and the second rotating body 55A, and is provided around the engaging teeth 542 and 553.
The case 59 forms a hollow portion in which the second rotating body 55A is arranged, and has a split groove. The inner surface of the case 59 has a circular cross section. Adjustment screws 592 for adjusting the inner diameter are attached to both sides of the split groove in the case 59, and the adjustment pressure of the adjustment screw 592 adjusts the contact pressure of the case 59 with respect to the second rotating body 55A. By adjusting the contact pressure, the frictional force with the case 59 generated by the rotation of the second rotating body 55A can be adjusted.

  In the above-described embodiment, the slider 42 and the catcher 43 that tilts in the movement of the slider 42 constitute an engaging body that can be engaged with the strike 44, but the present invention is not limited to this. For example, as shown in FIG. 7, a protrusion 431 is formed on the slider 42 itself, and the protrusion 42 is separate from the slider 42 and is engaged with a retractable member 433 (a configuration corresponding to the protrusion 432) that can protrude and retract from the slider 42. Coalescing may be configured.

  In the above embodiment, the engaging teeth 542 of the first rotating body 54 and the engaging teeth 553 of the second rotating body 55 have a rectangular shape, but are not limited thereto. For example, the first rotating body 54 and the second rotating body 55 may have engagement teeth 70 and 80 shown in FIG. The engagement teeth 70, 80 are made of heat-treated iron.

The engaging teeth 70 of the first rotating body 54 have a right-angled triangular shape, and a plurality of engaging teeth 70 are formed on the end face of the first rotating body 54 along the circumferential direction.
As shown in FIGS. 8 and 9, the engagement tooth 70 has a first meshing tooth surface 71 and a first non-meshing tooth surface 72. The first meshing tooth surface 71 is a flat surface extending along the axial direction X of the spiral rod 57 and orthogonal to the end surface of the first rotating body 54. The first non-meshing tooth surface 72 is inclined with respect to the axial direction X of the spiral rod 57 and the end surface of the first rotating body 54. The first tooth tip 73 where the first meshing tooth surface 71 and the first non-meshing tooth surface 72 intersect is formed in a pointed shape.

The engagement teeth 80 of the second rotating body 55 have a right-angled triangular shape, and are formed on the end face of the second rotating body 55 along the circumferential direction. The engagement tooth 80 has a second meshing tooth surface 81 and a second non-meshing tooth surface 82. The second meshing tooth surface 81 is a flat surface extending along the axial direction X of the spiral rod 57 and orthogonal to the end surface of the second rotating body 55. The second non-meshing tooth surface 82 is inclined with respect to the axial direction X of the spiral rod 57 and the end surface of the second rotating body 55. The second tooth tip 83 where the second meshing tooth surface 81 and the second non-meshing tooth surface 82 intersect is formed in a pointed shape.
As shown in FIG. 9 (A), the tooth height H2 of the engaging teeth 80 of the second rotating body 55 is longer than the tooth height H1 of the engaging teeth 70 of the first rotating body 54. The pitch P between the plurality of engaging teeth 70 is equal to the pitch P between the plurality of engaging teeth 80. Therefore, the number of teeth of the engagement teeth 70 and 80 is equal to each other.

  The first meshing tooth surface 71 and the second meshing tooth surface 81 are arranged along the axial direction X of the spiral rod 57 even if the first meshing tooth surface 71 and the second meshing tooth surface 81 are inclined with respect to the axial direction X of the spiral rod 57. Within the specified range. Further, the first tooth tip 73 and the second tooth tip 83 are within the above-mentioned pointed range even if they are R-shaped within the range of the processing error.

Since the first tooth tip 73 and the second tooth tip 83 are each formed in a pointed shape, the first rotating body 54 in the disengaged state approaches the second rotating body 55 as shown in FIG. At the time of engagement, the collision between the first tooth tip 73 and the second tooth tip 83 can be suppressed, and as shown in FIG. 9B, the first meshing tooth surface 71 and the second meshing tooth surface 81 can be smoothly engaged.
Further, since the first meshing tooth surface 71 and the second meshing tooth surface 81 are formed along the axial direction X of the spiral rod 57, the rotation of the first rotating body 54 about the spiral rod 57 When the rotation is transmitted to the rotating body 55, the force in the direction in which the first meshing tooth surface 71 and the second meshing tooth surface 81 are disengaged (the direction in which the first rotating body 54 is separated from the second rotating body 55). Force) does not occur. For this reason, the engagement state between the first rotating body 54 and the second rotating body 55 can be maintained.
Further, even when the first rotating body 54 and the second rotating body 55 are engaged, the first tooth tip 73 of the engaging teeth 70 of the first rotating body 54 does not contact the end face of the second rotating body 55, The first tooth tip 73 is not crushed and deformed. For this reason, for example, when the first tooth tip 73 is deformed due to collision, the first tooth tip 73 may interfere with other components such as the case 51 when the first rotating body 54 rotates. As described above, since the first tooth tip 73 is not deformed by the collision, even if the first rotating body 54 rotates, the first tooth tip 73 does not interfere with other components such as the case 51 and the first rotation. The smooth rotation of the body 54 can be maintained.

In addition, the number of teeth of the engaging teeth 70 and 80 is equal to each other, but is not limited thereto, and one of the engaging teeth 70 and 80 may be an integral multiple of the other.
The number of teeth of the engaging teeth 70 of the first rotating body 54 may be an integral multiple of the number of teeth of the engaging teeth 80 of the second rotating body 55.
Further, the first non-meshing tooth surface 72 and the second non-meshing tooth surface 82 are formed in a flat surface shape, but may be formed in a convex or concave curved surface shape.
Further, the outer diameter of the coupling member 541 of the first rotating body 54 may be formed slightly smaller than the outer diameter of the coupling portion 552 of the second rotating body 55. In this case, the distance between the coupling member 541 and the case 51 may be reduced. Can be made larger than the clearance between the coupling portion 552 and the case 51.

  In the above-described embodiment, the closer 3 that automatically closes and moves the door body 20 has been described as an automatic moving device. However, instead of this, for example, the above-described structure of the closer 3 is disposed in a left-right opposite direction, and the door body 20 is moved. May be an automatic opening device for automatically opening and moving the device.

  In the above-described embodiment, the sliding door 1 is described as a fitting to which the closer 3 of the present embodiment is attached.

  DESCRIPTION OF SYMBOLS 1 ... Sliding door (fitting), 3 ... Closer (automatic movement device), 4 ... U-shaped frame, 4A ... Bottom piece, 4B ... Rising piece, 5, 6 ... Angle material, 7 ... Coil spring (rebound spring), 10 ... Frame body, 11: Upper frame, 12: Lower frame, 13: Vertical frame, 20: Door body (closed surface material), 21: Upper frame, 22: Lower frame, 23: Vertical frame, 24: Panel, 30 ... Apparatus, 31: cylindrical body, 32: torsion spring, 33: rotating member, 34: fixing member, 40: transmitting device, 41: guide member, 411: guide groove forming part, 42: slider, 43: catcher (engagement body) 431, 432 projecting member, 433 projecting member, 44 strike (engaged body), 45, 46 guide pin, 50, 50A braking device, 51, 59 case, 511 contact surface, 52, 53 ... holding member, 54, 54A ... first rotating body, 541 ... f Coupling member, 542, 553: engagement teeth, 543: enlarged diameter portion, 545: slide member, 55, 55A: second rotating body, 551: rotating body portion, 552: coupling portion, 56, 56A: coil spring (attached) Biasing member), 57: spiral rod, 571, 572: flat plate portion, 573: screw portion, 58: damping grease (resistor), 592: adjusting screw, 60: receiving member, 70: engaging tooth, 71: first Meshing tooth surface, 72 ... first non-meshing tooth surface, 73 ... first tooth tip, 80 ... engaging tooth, 81 ... second meshing tooth surface, 82 ... second non-meshing tooth surface, 83 ... Two teeth tips, H1, H2 ... toothing, P ... pitch, X ... axial direction.

Claims (10)

A first rotating body, a second rotating body with which the first rotating body is engaged so as to transmit rotation, and a second rotating body interposed between receiving portions formed on the first rotating body and the second rotating body . An urging member for urging one rotator in a direction away from the second rotator, a case accommodating the first rotator, the second rotator and the urging member, and the first rotator and said second input capable spiral rod moving force of the rotating body with Ru inserted through Tei from the first rotary member side to the one axial direction toward the second rotating body side, between said casing and said second rotary member And a resistor that generates a resistance to the rotation of the second rotating body,
In the stationary state of the spiral rod, the first rotating body is in a non-engaged state separated from the second rotating body on the other side in the axial direction by the urging force of the urging member,
The first rotating body is screwably engaged with the spiral rod rotatably by axial movement of the spiral rod,
Wherein the first rotating body, in response to said moving speed of the one axial side of the spiral rod, before and Kihi engagement, against the second rotary member against the urging force of the urging member A braking device, which switches between an engaged state in which rotation can be transmitted at a position close to one axial side . The braking device according to claim 1 ,
The first rotating body and the second rotating body are formed with engaging teeth that engage with each other. The braking device according to claim 2 ,
The engagement teeth of the first rotating body have a first meshing tooth surface formed along the rotation axis direction of the first rotating body, and a pointed first tooth tip together with the first meshing tooth surface. Having a first non-intermeshing tooth surface to form,
The engaging teeth of the second rotating body have a second meshing tooth surface formed along the rotation axis direction of the second rotating body, and a pointed second tooth tip together with the second meshing tooth surface. Having a second non-intermeshing tooth surface to form,
In the engaged state, the first meshing tooth surface and the second meshing tooth surface mesh with each other. The braking device according to claim 3 ,
The engagement device of the second rotator has a longer tooth than the engagement of the first rotator. In the braking device according to any one of claims 1 to 4 ,
The said spiral rod has a different thread pitch along an axial direction, The braking device characterized by the above-mentioned. The braking device according to any one of claims 1 to 5 ,
One end side of the spiral rod is formed with a larger thread pitch than the other end side,
The first rotating body is relatively moved from one end side to the other end side of the spiral rod by an axial movement of the spiral rod. A first rotating body, a second rotating body with which the first rotating body is engaged so as to be able to transmit rotation, and an urging member for urging the first rotating body with respect to the second rotating body in a separating direction, A spiral rod inserted into the first rotating body and the second rotating body, and a braking device including a resistor that generates a resistance to the rotation of the second rotating body ,
An applying device that applies an axial moving force to a spiral rod of the braking device;
A transmission device that makes it possible to transmit the axial moving force of the spiral rod applied from the application device to the closing face material,
The first rotating body is screw-engaged with the spiral rod rotatably by axial movement of the spiral rod with respect to the first rotating body,
The first rotating body resists the non-engaged state separated from the second rotating body by the urging force of the urging member and the urging force of the urging member according to the axial movement of the spiral rod. And it is configured to switch the engagement state engaged with the second rotating body so that rotation can be transmitted,
The application device is connected to one end of the spiral rod,
The transmission device includes an engaging body connected to the other end of the spiral rod, and an engaged body with which the engaging body engages,
The automatic moving device, wherein the engaging body engages with the engaged body during the movement with respect to the engaged body so that the moving force of the applying device can be transmitted to the spiral rod. The automatic moving device according to claim 7 ,
The spiral rod has a screw portion and a flat plate portion,
The applying device includes a rotating member through which the spiral rod is inserted, and a torsion spring attached to the rotating member,
The rotating member is screw-engaged with a threaded portion of the spiral rod in an engaged state of the engagement body and the engaged body,
The automatic moving device, wherein the engagement body is disengaged from the engaged body in a state where the flat plate portion of the spiral rod is inserted into the rotating member. In the automatic moving device according to claim 7 or 8 ,
The braking device is disposed between the application device and the transmission device so as to be movable along an axial direction of the spiral rod,
The first rotating body is located closer to the transmission device than the second rotating body,
An automatic moving device, wherein a rebound spring for urging the braking device toward the transmission device is disposed between the braking device and the applying device. It is provided with a closing panel which can be arranged in an opening of a building, and the automatic movement device according to any one of claims 7 to 9 ,
The engaging body is attached to one of the closed face material side and the opening side, and the engaged body is attached to the other of the closed face material side and the opening side. A fitting that is characteristic.

Images