JP2019082211A - Gear device - Google Patents

Abstract

To provide a gear device capable of suppressing wear of a tooth part and/or generation of noise while an intermittent gear and a gear engaging with the same are smoothly engaged.SOLUTION: A gear device includes: a first gear 34 which is allowed to rotate around a shaft 32 in at least one direction; an intermittent gear 40 provided with a tooth part 40a engaging with the first gear and a tooth-missing part 40b released from the engagement; a device body 31 provided with the first gear and the intermittent gear; magnets 52 provided on one of the first gear and the device body; and a sucked part 54a provided on the other one and attracted to the magnets. The magnets and the sucked part regulate the first gear so as to be located at a position where a tooth part 34a of the first gear released from engagement with the intermittent gear can be engaged with the tooth part 40a of the tooth-missing part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a gear device provided with a plurality of gear wheels.

BACKGROUND ART A gear device provided with a plurality of gears is known as a mechanism for transmitting rotation. In such a gear device, in a gear provided with an intermittent gear provided with a non-toothed portion, when transitioning from the disengaged state to the meshed state, the tooth tips interfere with each other due to misalignment or the like, resulting in smooth meshing. It is conceivable that an unintended condition will occur.
For example, in Patent Document 1 listed below, there are a gear engaged with a sprocket engaged with a roller chain, a partially toothed gear having a tooth portion meshing with the gear, and a braking gear meshed with a tooth portion of the partially toothed gear. A self-closing door provided is disclosed. Further, the automatic closing door is configured to be provided with a spring for position control for restricting the position of the braking gear to a position where it can be easily engaged with the partially toothed gear.

JP-A-11-131900

  However, in the case of the above configuration, since the position control spring abuts on the teeth of the braking gear, it is conceivable that wear or abnormal noise may occur in the teeth, and further improvement is desired.

  The present invention has been made in view of the above situation, and provides a gear device capable of suppressing occurrence of wear and noise of a tooth portion while making it possible to smoothly mesh an intermittent gear and a gear meshing with the intermittent gear. The purpose is to

  In order to achieve the above object, in the gear device according to the present invention, there is provided a first gear whose rotation in at least one direction is permitted with respect to the shaft, a tooth portion meshing with the first gear, and a portion where the engagement is released. An intermittent gear provided with a tooth portion, an apparatus main body provided with the first gear and the intermittent gear, a magnet provided to one of the first gear and the apparatus main body, and the magnet provided to the other A suctioned portion to be sucked, and the magnet and the suctioned portion are positioned such that the teeth of the first gear whose meshing with the intermittent gear is released can mesh with the teeth of the intermittent gear The first gear is regulated so as to be

  According to the gear device of the present invention, the intermittent gear can be smoothly meshed with the gear meshing with the intermittent gear by the above-mentioned configuration, while suppressing generation of noise and noise of the tooth portion. it can.

(A) is a schematic exploded perspective view which shows typically an example of the gear apparatus which concerns on one Embodiment of this invention, (b) is a schematic perspective view which shows typically an example of the 1st gear with which the same gear apparatus is equipped. It is. It is a partially broken schematic front view which shows typically an example of the same gear apparatus and a sliding door apparatus provided with the same. FIG. 3 is a partially broken schematic front view corresponding to FIG. 2; (A) is a partially broken schematic longitudinal sectional view corresponding to the YY line arrow in (b), (b) is a partially broken schematic cross section corresponding to the XX line in FIG. 2 It is a front view. (A) is a schematic plan view of the same gear device, (b) is a schematic bottom view of the same gear device. It is the partially broken schematic front view which abbreviate | omitted the part made to respond | correspond to the Z section in FIG. It is the partially broken schematic front view which abbreviate | omitted the part made to respond | correspond to FIG. It is the partially broken schematic front view which abbreviate | omitted the part made to respond | correspond to FIG. An example of the gear apparatus which concerns on other embodiment of this invention, and an example of a sliding door apparatus provided with this are shown typically, (a) is the partially broken schematic front view made to respond | correspond to FIG. 6, (b) is FIG. 5 is a schematic plan view corresponding to FIG.

Hereinafter, embodiments of the present invention will be described based on the drawings.
In some of the drawings, some of the detailed reference numerals attached to the other drawings are omitted.
Moreover, in the following embodiments, directions such as the vertical direction will be described on the basis of a state in which a sliding door apparatus incorporating the gear device according to each embodiment is constructed.

FIGS. 1-8 is a figure which shows typically an example of the gear apparatus which concerns on 1st Embodiment, and a sliding door apparatus provided with the same.
As shown in FIG. 6, the gear device 30 according to the present embodiment is an intermittent gear 40 provided with a first gear 34, a tooth portion 40 a that meshes with the first gear 34, and a toothless portion 40 b that is released from meshing. And an apparatus main body 31 provided with the first gear 34 and the intermittent gear 40. In this embodiment, as shown in FIGS. 2 and 3, the gear unit 30 is installed on the door 10 that is made self-propelled on the closing side by the automatic closing mechanism 23 and the sliding door device 1 Is supposed to constitute. Moreover, the example which installed the gear apparatus 30 in the upper end side of the door 10 is shown. Further, the gear device 30 is configured to function as a door braking device for decelerating the door 10 moving a predetermined distance from the arbitrary open position to the closing side. The specific configuration of the gear device 30 will be described later.

The sliding door device 1 is not limited to a house, but may be installed in a public facility such as a medical facility or a welfare facility, in a commercial facility, in various stores, in a factory, etc. , May be installed outdoors.
In the illustrated example, as shown in FIGS. 2 to 4, the sliding door device 1 includes an upper rail 15 that suspends and supports the door 10. Moreover, the sliding door apparatus 1 is set as the structure provided with the single door 10 distribute | arranged in the shape of a one-sided pull. In the illustrated example, the door 10 is provided so as to open and close an opening 9 serving as an entrance or the like provided in the wall 2 such as a partition wall, and is housed in a sleeve wall provided in a part of the wall 2 It shows an example built with sleeves. Moreover, the example which built the door 10 in the door frame provided with the upper frame 4, the door side vertical frame 5, the door back side vertical frame 6, and the middle vertical frame (middle stand) 7 is shown. Further, in the illustrated example, the upper side of the opening 9 and both sides in the opening width direction are divided by the upper frame 4, the door end side vertical frame 5, and the intermediate vertical frame 7. The lower side of the opening 9 may be partitioned by the lower frame, but in the illustrated example, it is partitioned by the floor surface 3.

Moreover, in the example of a figure, it is set as the structure which provided the cover members 50 and 50 which each covers the rail width direction (direction along door thickness direction) of the upper rail 15 to the sliding door apparatus 1. As shown in FIG. These cover members 50, 50 are in the form of a long strip (in the form of a curtain) in the longitudinal direction of the rail, and are arranged to cover the gap between the upper frame 4 to be attached to the upper rail 15 and the door 10 Ru.
The door 10 has a substantially rectangular flat shape. Moreover, as shown in FIG.2, FIG3 and FIG.4 (b), the pulls 14 and 14 are provided in the door thickness direction both sides of the door tip side edge part of the door 10 as shown in FIG. In the illustrated example, the door 10 is disposed so that the part on the door tip side including the pulls 14 and 14 protrudes to the opening 9 side more than the inner side surface facing the opening 9 side of the intermediate vertical frame 7 in the fully open state. Is configured. That is, the example which built the door 10 so that what is called a remnant is formed is shown. Further, as shown in FIG. 6, at the upper end portion of the door 10, there is provided a housing recess 13 for receiving the lower side portion of the gear device 30, which will be described later.

  Moreover, the sliding door apparatus 1 is equipped with the lower end guide member 8 which guides the lower end side of the door 10, as shown in FIG. In the illustrated example, the lower end portion of the door 10 is provided with a concave groove 11 opened downward so as to extend in the door width direction, and the lower end guide member 8 is provided with a guide pin inserted (freely inserted) into the concave groove 11 Configuration. In addition, it is not restricted to the aspect which builds the door 10 by sleeve wall accommodation like a figure example, It is good also as an aspect etc. which is constructed by door bag accommodation or an outset accommodation. Further, the present invention is not limited to the embodiment in which the single door body 10 is provided in a one-piece manner, and a plurality of door bodies 10 may be provided in a drawn manner or a staggered manner. In this case, at least one door 10 may be provided with an automatic closing mechanism 23 and a gear unit 30 described later. Further, the opening 9 is not limited to the entrance and the like, and may be an opening 9 such as various storages and windows. Moreover, as the door 10 decelerated by the gear apparatus 30, it is good also as what is made into the partition body and screen shape etc. which are distribute | arranged to partition shape, and others may be made into various structures.

The upper rail 15 is elongated in the door width direction of the door 10 and has a uniform cross-sectional shape over the entire length. The length dimension of the upper rail 15 is an appropriate dimension so as to enable guiding of the upper end side of the door 10 moving between the closed position and the fully open position, for example, a door between the pair of vertical frames 5 and 6 The dimensions correspond to the dimensions along the width direction.
Further, the upper rail 15 is provided with a rail groove 16 extending in the longitudinal direction and opening in one direction. The rail groove 16 is provided along the entire length of the upper rail 15, and in the example shown, is provided so as to open downward. As shown in FIG. 4 (a), the upper rail 15 has a top wall 17 that defines the upper side of the rail groove 16 on the groove bottom side, and both side walls 18 and 18 that define both sides in the groove width direction. , Is provided. Further, guide pieces 18a, 18a are provided at lower ends of the both side walls 18, 18 so as to protrude in the direction facing each other.

On the upper end side of the door 10, as shown in FIG. 2, FIG. 3 and FIG. 4 (a), guided members 20 and 27 guided and supported by the upper rail 15 are provided. Further, the to-be-guided members 20 and 27 include a toe-side guided member 20 provided on the door tip side of the door 10 and a toe-side guided member 27 provided on the buttocks side of the door 10. It is supposed to be configured.
The door butt side guided member 27 has a configuration in which a first traveling body 28 and a second traveling body 29 which travel by being guided and supported by the upper rail 15 are provided at intervals in the longitudinal direction of the upper rail 15 . Further, a gear device 30 described later is configured to be fixed and held so as to be bridged between the first traveling body 28 and the second traveling body 29. As shown in FIGS. 4 (a) and 5, the first and second traveling bodies 28 and 29 rotate on the guide piece portions 18a and 18a of the upper rail 15 about the axis along the door thickness direction. Rolling elements (rollers) 28a, 28a, 29a, 29a are provided on both sides in the door thickness direction.

Further, as shown in FIG. 1 (a) and FIG. 6, the first traveling body 28 is provided at the upper end of the door back side of the door 10 so as to open outward and upward in the door width direction. A mounting portion 28 b attached to the concave mounting portion (cup portion) 12 is provided. Further, the second traveling body 29 is disposed closer to the door tip side than the first traveling body 28 and is connected to the first traveling body 28 via a gear device 30 described later.
The door-tip-side guided member 20 has a configuration in which a first traveling body 21 and a second traveling body 22 traveling by being guided and supported by the upper rail 15 are provided at intervals in the longitudinal direction of the upper rail 15 . Further, the door-tip-side guided member 20 is provided with an automatic closing mechanism 23 and a buffer mechanism 25 for decelerating the door 10 moving to the closing position. Similar to the above-described door butt side, rolling members (first and second traveling members 21 and 22) rotate and run on the guide piece portions 18a and 18a of the upper rail 15 about the axis along the door thickness direction Rollers are provided on both sides in the door thickness direction.

  As shown in FIGS. 2 and 3, the automatic closing mechanism (auto-closing mechanism) 23 includes a biasing member 24 that biases the door 10 in the open position toward the closing side. Such a biasing member 24 may be, for example, a spiral spring or the like. The biasing member 24 is in a wound state when the door 10 is in the closed position, and is in an extended state when the door 10 is in the open position. In this extended state, a state in which a winding force (biasing force, elastic restoring force) is generated in the biasing member 24, that is, a biasing force for moving the door 10 to the closing side by the automatic closing mechanism 23 is stored. It will be in the Further, in this state, if the external force or the like for maintaining the door 10 at the open position is unloaded, the door 10 moves to the closing side by the elastic restoring force of the biasing member 24. The biasing member 24 may be configured to move the door 10 in the fully open position to the closed position. Alternatively, a catch mechanism or the like may be provided to hold the door 10 in the fully open position against the urging of the automatic closing mechanism 23 toward the closing side. Note that the automatic closing mechanism 23 is not limited to the above-described configuration, and other various configuration may be employed.

  The buffer mechanism 25 is configured to absorb and absorb the impact of the door tip side end portion of the door 10 closing the opening 9 and the door tip side vertical frame 5 as the contact object. Such a buffer mechanism 25 may be a cylinder such as an air cylinder elongated in the door width direction. In addition, the buffer mechanism 25 is provided with a cylinder body, a rod 26 that extends and contracts in the moving direction of the door 10 with respect to the cylinder body, and a return portion such as a spring that returns the shortened rod 26 to an extended state. It may be something. In such a buffer mechanism 25, as shown in FIG. 3, when the door 10 is in the open position, the rod 26 in the extended state is a door-end-side vertical frame than the door-end side end face of the door 10. It is in a state of projecting significantly to the 5 side. Further, when the door 10 is moved to the closing side by the automatic closing mechanism 23, as shown in FIG. 2, the tip end portion of the rod 26 is the end inner wall portion of the upper rail 15 or the door tip side vertical frame It abuts on the contact part such as 5 and is shortened. By shortening the rod 26 in this manner, the door 10 moving to the closed position is decelerated (attenuated) by the so-called air cushion action by the compression of the air in the cylinder body.

  As shown in FIGS. 1A and 6, the gear device 30 has a magnet 52 provided on one of the first gear 34 and the apparatus main body 31, and a suction object provided on the other and attracted to the magnet 52. And a unit 54a. The magnet 52 and the attracted portion 54a are positioned such that the teeth 34a of the first gear 34 released from meshing with the intermittent gear 40 can be meshed with the teeth 40a of the intermittent gear 40. It is supposed to be regulated. The first gear 34 is allowed to rotate in at least one direction with respect to the shaft (first shaft) 32. Further, on one axial side of the first gear 34, a second gear 33 meshing with the rack 19 as a meshing object is provided.

  In addition, the gear device 30 includes a third gear 38 that constitutes another first gear meshed with the tooth portion 40 a of the intermittent gear 40. In addition, the gear device 30 includes a magnet 52 provided on one of the third gear 38 and the apparatus main body 31, and a attracted portion 58a provided on the other and attracted by the magnet 52. The magnet 52 and the attracted portion 54a are positioned in the third position so that the teeth 38a of the third gear 38 disengaged from the intermittent gear 40 can be engaged with the teeth 40a of the intermittent gear 40 as described above. The gear 38 is regulated. Further, on the one side in the axial direction of the third gear 38, a fourth gear 37 constituting another second gear meshing with the rack 19 as a meshing object is provided as described above. The specific configurations of the magnets 52, 52 and the attracted portions 54a, 58a will be described later.

  In the intermittent gear 40, when the door 10 moves a predetermined distance from an arbitrary open position to the closing side, the rotation of the third gear 38 is transmitted, and the non-toothed portion 40b is transmitted from the transmission release position with the first gear 34. It is configured to be displaced to the transmission release position with the third gear 38. In addition, the gear device 30 includes a braking mechanism 43 that applies a braking force to the displacement of the intermittent gear 40 that is transmitted by the rotation of the third gear 38 and displaced. That is, the gear unit 30 includes the fully open position, and rotates the third gear 38 which rotates when the door 10 at an arbitrary open position halfway from the closed position to the fully open position moves a predetermined distance toward the closed side. On the other hand, the braking force of the braking mechanism 43 is applied via the intermittent gear 40. The braking force acts as a resistance (brake) to the rotation of the fourth gear 37 interlocked with the rotation of the third gear 38, and the automatic closing mechanism 23 decelerates the door 10 self-propelled to the closing side. Further, in the present embodiment, when the non-toothed portion 40 b of the intermittent gear 40 is displaced to the transmission release position with the third gear 38 as described above, the non-toothed portion 40 b becomes the transmission release position with the third gear 38. As described above, the displacement assisting mechanism 47 for displacing the intermittent gear 40 is provided. The specific configurations of the intermittent gear 40, the braking mechanism 43, and the displacement assisting mechanism 47 will be described later.

The second gear 33 and the fourth gear 37 are provided side by side at intervals in the movement direction of the door 10 (door width direction), and are configured to mesh with a single rack 19. In the present embodiment, the fourth gear 37 is provided so as to be located closer to the rear end than the second gear 33.
The rack 19 is elongated in the longitudinal direction of the upper rail 15, as shown in FIG. The rack 19 may be provided so that the second gear 33 and the fourth gear 37 always mesh when the door 10 moves between the closed position and the fully open position. In the illustrated example, as shown in FIG. 4A and FIG. 6, the rack 19 is provided along the lower surface of the top wall portion 17 of the upper rail 15 and with the tooth portion facing downward. There is.

  The first gear 34 is coaxially provided to the second gear 33, and the third gear 38 is coaxially provided to the fourth gear 37. The first gear 34 and the third gear 38 are rotatable about axes (first shaft 32 and second shaft 36) 32, 36 axially aligned in the door thickness direction. The first gear 34 and the third gear 38 are smaller in diameter than the second gear 33 and the fourth gear 37 so as not to contact the rack 19. The first gear 34 and the third gear 38 are gears having the same size and shape, that is, gears (spur gears) having the same diameter and the same number of teeth (the same pitch). The diameters of the first gear 34 and the third gear 38 (diameter of the tip end circle) may be set as appropriate so as not to contact the teeth of the rack 19. Further, in the present embodiment, the second gear 33 and the fourth gear 37 have the same size and shape, that is, gears (spur gears) having the same diameter and the same number of teeth (the same pitch).

The first gear 34 is configured to allow rotation in one direction with respect to the first shaft 32 via the one-way clutch mechanism 35, that is, to spin in one direction. The first gear 34 is rotated by the one-way clutch mechanism 35 about the first shaft 32 in conjunction with the rotation of the second gear 33 when the door 10 moves to the release side, while the door 10 is rotated. When moving to the closing side, it idles without interlocking with the rotation of the second gear 33.
In substantially the same manner as described above, the third gear 38 is allowed to rotate in the direction opposite to the second shaft 36 via the one-way clutch mechanism 39, that is, in the direction opposite to the above. It is configured to be idle. The third gear 38 is rotated by the one-way clutch mechanism 39 around the second shaft 36 in conjunction with the rotation of the fourth gear 37 when the door 10 moves to the closing side, while the door 10 is rotated. When moving to the open side, it idles without interlocking with the rotation of the fourth gear 37.

  That is, the one-way clutch mechanisms 35 and 39 are configured to be capable of transmitting rotation in the reverse direction to each other. Such one-way clutch mechanisms 35 and 39 have an inner ring and an outer ring, and the rotation of the inner ring rotating in one direction is transmitted to the outer ring, while the outer ring is idled against the inner ring rotating in the other direction. It is possible to adopt one having a known configuration, which is considered as an acceptable configuration. As such one-way clutch mechanisms 35 and 39, for example, a cam type or a sprag type may be used. In this case, the first gear 34 and the third gear 38 may be integrally provided on the outer rings of the one-way clutch mechanisms 35 and 39, or may be non-rotatably fixed to the outer rings. Here, instead of the aspect in which the one-way clutch mechanisms 35, 39 are provided on the side of the first gear 34 and the third gear 38 as described above, the one-way clutch mechanisms 35, 39 are provided on the side of the second gear 33 and the fourth gear 37. It is good also as an aspect.

  Further, in the present embodiment, as shown in FIG. 1, one of the first gear 34 and the second gear 33 is provided with an engagement protrusion 35 a that protrudes in the axial direction, and the other is provided with respect to the second gear 33. In order to allow the rotation of the first gear 34, an engagement recess 33a for receiving the engagement protrusion 35a is provided. Also, one of the third gear 38 and the fourth gear 37 is provided with an engagement projection 39 a that protrudes in the axial direction, and the other allows rotation of the third gear 38 with respect to the fourth gear 37, An engagement recess 37a for receiving the engagement projection 39a is provided. In the present embodiment, the engagement convex portions 35a and 39a are provided on the first gear 34 and the third gear 38 as one, and the engagement recesses 33a and 37a are provided on the second gear 33 and the fourth gear 37 as the other. It has composition.

  The engagement convex portions 35a and 39a of the first gear 34 and the third gear 38 are provided so as to protrude toward the second gear 33 and the fourth gear 37 as shown in FIG. 1 (b) and FIG. It is done. In addition, the engagement convex portions 35a and 39a are provided at a plurality of locations in the circumferential direction at intervals in the first gear 34 and the third gear 38, respectively. In the illustrated example, two engagement convex portions 35a, 35a, 39a, 39a are provided on the first gear 34 and the third gear 38 at equal intervals in the circumferential direction. Further, these engaging convex portions 35a, 35a, 39a, 39a are formed into an annular fan shape having the respective axes 32, 36 as concentric circles when viewed in the axial direction. Further, these engaging convex portions 35a, 35a, 39a, 39a are provided on the inner ring of the one-way clutch mechanisms 35, 39 of the first gear 34 and the third gear 38.

  The engagement recesses 33a and 37a of the second gear 33 and the fourth gear 37 are provided so as to open toward the first gear 34 and the third gear 38, respectively. In the present embodiment, each of the second gear 33 and the fourth gear 37 is circumferentially configured so as to be able to receive the engagement convex portions 35a, 35a, 39a, 39a provided on the first gear 34 and the third gear 38. The example which provided two engagement recessed parts 33a, 33a, 37a, 37a at equal intervals in the direction is shown. Further, the engagement recesses 33a, 33a, 37a, 37a are in the form of an annular fan having the respective axes 32, 36 as concentric centers when viewed in the axial direction. Further, the dimension in the circumferential direction of each of the engagement recesses 33a, 33a, 37a, 37a is larger than the dimension in the circumferential direction of each of the engagement protrusions 35a, 35a, 39a, 39a. As a result, the first gear 34 including the one-way clutch mechanism 35 is provided in a state where there is a clearance on both sides in the circumferential direction with respect to the second gear 33, and the third gear 38 including the one-way clutch mechanism 39 is used as the fourth gear 37. It is provided in the state where there is play so to speak on both sides in the circumferential direction. The dimension along the circumferential direction of each of the engagement concave portions 33a, 33a, 37a, 37a and the engagement convex portions 35a, 35a, 39a, 39a is a half tooth to 2 teeth with respect to the second gear 33 and the fourth gear 37. The dimensions may be appropriately set to allow the rotation of the first gear 34 and the third gear 38 about a minute.

As shown in FIGS. 1A and 6, the intermittent gear 40 is rotatably provided about a third shaft 42 along the axial direction in the door thickness direction. The intermittent gear 40 may be rotatably held on the third shaft 42 fixedly provided, or fixed on the third shaft 42 rotatably held on an appropriate bearing portion. It may be provided. Further, the third shaft 42 is a center between the first shaft 32 and the second shaft 36 so that the tooth portion 40a of the intermittent gear 40 meshes with the tooth portions 34a and 38a of the first gear 34 and the third gear 38. It is provided to be located directly under the unit. Further, the intermittent gear 40 is provided so as to mesh with the first gear 34 and the third gear 38 and not to interfere with the second gear 33 and the fourth gear 37.
The tooth portion 40a and the toothless portion 40b of the intermittent gear 40 are in a state where the toothless portion 40b is positioned in one of the first gear 34 and the third gear 38, that is, the intermittent gear 40 transmits to one side. In the state of being in the release position, a tooth portion 40a is provided so as to mesh with the other. That is, the toothed portion 40a and the toothless portion 40b are provided such that the toothless portion 40b is located in both the first gear 34 and the third gear 38 and the intermittent gear 40 is not in the transmission release position with respect to both. There is.

The distance by which the toothless portion 40b of the intermittent gear 40 moves from the transmission release position with the first gear 34 to the transmission release position with the third gear 38 is the diameter of the first gear 34 and the third gear 38, or the gear The dimensions may be set appropriately in accordance with a predetermined distance for decelerating the door 10 by the device 30. That is, the dimension along the circumferential direction of the tooth portion 40a from the toothless portion 40b displaced in this way to the toothless portion 40b corresponds to a predetermined distance.
If the predetermined distance is too long, the closing time tends to be extended, so it may be shorter than the door width of the door 10. For example, the predetermined distance may be 1/2 or less of the door width dimension, preferably 1/3 or less of the door width dimension, or relatively short such as about 50 mm to 300 mm from an arbitrary open position. It may be a distance. That is, in the gear device 30, the tooth portion 40a of the intermittent gear 40 is displaced by the third gear 38 which is rotated when the door 10 moves this predetermined distance, and the toothless portion 40b is removed from the first gear 34. The three gears 38 are configured.

In the present embodiment, the dimension in the circumferential direction of the tooth portion 40 a of the intermittent gear 40 is larger than the dimension in the circumferential direction of the toothless portion 40 b. The dimension along the circumferential direction of the non-toothed portion 40 b is appropriate so that the tooth portion 40 a of the intermittent gear 40 does not mesh with the tooth portions 34 a and 38 a of the corresponding first gear 34 or third gear 38 at the transmission release position. It may be dimensioned. Further, in the present embodiment, the diameter of the intermittent gear 40 is larger than the diameters of the first gear 34 and the third gear 38. Further, the diameter of the intermittent gear 40 is made larger than the diameters of the second gear 33 and the fourth gear 37.
The intermittent gear 40 is rotated in conjunction with the rotation of the fourth gear 37 rotated by the rack 19 when the door 10 moves a predetermined distance from an arbitrary open position to the closing side. The teeth 40a mesh with and rotate. As a result, the non-toothed portion 40 b is displaced from the transmission release position with the first gear 34 to the transmission release position with the third gear 38. Then, when the door 10 further moves to the closing side, the non-toothed portion 40 b of the intermittent gear 40 becomes the transmission release position with the third gear 38, so the third gear 37 rotates in conjunction with the fourth gear 37. The rotation of the gear 38 is not transmitted to the intermittent gear 40. Further, when the door 10 moves to the closing side in this manner, the first gear 34 is at a position (meshing position) for transmitting the rotation to the tooth portion 40 a of the intermittent gear 40. The first gear 34 idles with respect to the second gear 33.

Further, when the door 10 is moved to the open side from the closed state, the intermittent gear 40 has the tooth portion 40 a on the first gear 34 which is rotated in conjunction with the rotation of the second gear 33 rotated by the rack 19. Engage and rotate. As a result, the non-toothed portion 40 b is displaced from the transmission release position with the third gear 38 to the transmission release position with the first gear 34. Then, when the door 10 is further moved to the open side, the non-toothed portion 40 b of the intermittent gear 40 becomes the transmission release position with the first gear 34, so the first gear rotates in conjunction with the second gear 33. The rotation of 34 is not transmitted to the intermittent gear 40. In addition, when the door 10 moves to the open side in this manner, the third gear 38 is at a position (meshing position) for transmitting the rotation to the tooth portion 40 a of the intermittent gear 40. The three gear 38 idles with respect to the fourth gear 37.
In addition, when the external force for opening the door 10 which is moved to the open side to an arbitrary open position as described above is unloaded, the door 10 is self-propelled by the automatic closing mechanism 23 and the intermittent gear The 40 is rotated by the third gear 38 as described above.

The braking mechanism 43 is configured to apply a braking force to the displacement of the intermittent gear 40 rotated by the third gear 38 as described above. In the present embodiment, the braking mechanism 43 is configured to apply a braking force to the rotation of the fifth gear 41 coaxially and fixedly provided with respect to the intermittent gear 40. Further, in the present embodiment, the braking mechanism 43 is provided with the sixth gear 46 which is disposed such that the axial direction is parallel to the direction of the axis (third axis) 42 of the intermittent gear 40 and meshes with the fifth gear 41. It has composition. Further, the braking mechanism 43 is configured to apply a braking force around the axis (damper axis) 45 of the sixth gear 46.
The fifth gear 41 is fixed to one side of the intermittent gear 40 in the door thickness direction so as to rotate with the intermittent gear 40. The fifth gear 41 is provided close to one side of the intermittent gear 40 in the door thickness direction so as not to interfere with the first gear 34 and the third gear 38 with which the tooth portion 40 a of the intermittent gear 40 is engaged.

The sixth gear 46 is disposed at an appropriate position so as to mesh with the fifth gear 41 without interfering with the gears 33, 34, 37, 38 and the intermittent gear 40.
The diameter and the number of teeth of the fifth gear 41 and the sixth gear 46 are such that the braking force by the braking mechanism 43 is effectively applied to the fourth gear 37 through the intermittent gear 40 and the third gear 38. It may be set appropriately in accordance with 43 and the like.
The braking mechanism 43 includes a damper main body 44 (see FIG. 5) that applies a braking force to a damper shaft 45 on which the sixth gear 46 is fixedly (non-rotatably) provided. As such a damper main body 44, viscosity resistance of a working fluid such as oil or biasing force of a spring may be used for rotational resistance of the damper shaft 45. In addition, while the damper main body 44 applies a braking force (high torque) when the damper shaft 45 rotates in one direction, a state in which the braking force becomes extremely small (low torque, It is considered as a one-way rotary damper in free state.

That is, in the present embodiment, the damper main body 44 interlocks with the intermittent gear 40 and the fifth gear 41 which are rotated when the door 10 moves from the arbitrary open position to the closing side by a predetermined distance as described above. A braking force is applied to the rotation of the rotated sixth gear 46. As described above, this braking force acts as a resistance (brake) to the rotation of the fourth gear 37, and the automatic closing mechanism 23 decelerates the door 10 self-propelled toward the closing side.
On the other hand, the damper main body 44 is for the rotation of the intermittent gear 40 which is rotated when moving the door 10 to the open side as described above and the sixth gear 46 which is rotated in conjunction with the fifth gear 41. The load is low.
The damper main body 44 may be capable of adjusting the braking force (torque, rotational resistance). As such a damper main body 44, the clearance (clearance) between the case and the rotor may be adjusted by rotating the operation part 44a (see FIG. 5), and the braking force may be adjusted. Further, the damper main body 44 constituting the braking mechanism 43 is not limited to the above-described configuration, and may have various other configurations.

  The displacement assisting mechanism 47 displaces the intermittent gear 40 so that the non-toothed portion 40b is at the transmission release position with the third gear 38 with respect to the intermittent gear 40 to which the braking force by the braking mechanism 43 is applied as described above. It is supposed to be configured (see FIG. 6). In the present embodiment, the displacement assisting mechanism 47 is configured to rotate the intermittent gear 40 immediately before the transmission release position with the third gear 38 to the transmission release position side to position it at the transmission release position. Further, the displacement assisting mechanism 47 is configured to be provided with a displacement assisting piece 48 for displacing the engagement projection 40c provided on the intermittent gear 40 to rotate the intermittent gear 40 and positioning the intermittent gear 40 at the transmission release position. . In the illustrated example, the engagement projection 40c is projected in the direction of the third shaft 42 in the middle in the radial direction on the opposite tooth side (the side facing the toothless portion 40b with the axial center) of the intermittent gear 40. The displacement assist piece 48 is provided with an engagement recess 48b which is provided and engaged with the engagement projection 40c.

The displacement assisting piece 48 is rotatable around the piece shaft 48a axially aligned in the door thickness direction so that the upper end side engaging with the engagement projection 40c is displaced in the door width direction generally ( It is said that it can swing. The engagement recess 48b is provided at the upper end portion of the displacement assisting piece 48 so as to be able to receive an engagement projection 40c that moves downward with the rotation of the intermittent gear 40. Further, at the upper end portion of the displacement assisting piece portion 48, there is an inclined guide surface for displacing the upper end side of the displacement assisting piece portion 48 to the door tip side with the contact of the engaging projection 40c moving downward. It is provided.
Further, in the displacement assisting mechanism 47, the upper end side of the displacement assisting piece 48 is biased so as to displace the engagement projection 40c so that the intermittent gear 40 becomes the transmission release position with the third gear 38. The configuration is such that a biasing member 49 is provided. In the illustrated example, the displacement assisting piece 48 is provided with a lower piece extending downward from the piece shaft 48a, and the lower piece is provided with a connecting part 48c of the biasing member 49. . Note that such a displacement assisting mechanism 47 may not be provided.

In the magnets 52 and 52 and the parts to be attracted 54a and 58a, the teeth 34a and 38a of the first gear 34 and the third gear 38, which are in the transmission release position as described above, can mesh with the teeth 40a of the intermittent gear 40. The first gear 34 and the third gear 38 are respectively regulated so as to be in the position.
In the present embodiment, as shown in FIGS. 6 to 8, the suctioned portions 54a and 58a are provided on the first gear 34 and the third gear 38 side, and the magnets 52 and 52 are provided on the apparatus main body 31 side. . Further, a plurality of suctioned portions 54a and 58a are provided on the side of the first gear 34 and the third gear 38 at equal intervals in the circumferential direction of the first gear 34 and the third gear 38, respectively. Further, the apparatus main body 31 side is provided with a magnet 52 for attracting any attracted portion 54a on the first gear 34 side and a magnet 52 for attracting any attracted portion 58a on the third gear 38 side. Configuration.

  Further, the number of the attracted portions 54a and 58a provided on the first gear 34 and the third gear 38 is set to be an integral fraction of 2 or more of the number of teeth of the first gear 34 and the third gear 38. . In the present embodiment, the number of the suctioned portions 54 a and 58 a is set to half the number of teeth of the first gear 34 and the third gear 38. Although the figure shows an example in which the number of teeth of the first gear 34 and the third gear 38 is 32 and the number of suctioned portions 54a and 58a is 16, the number of teeth is not limited to this. . The number of the suctioned portions 54a and 58a depends on the number of teeth of the first gear 34 and the third gear 38, but the number of teeth of the first gear 34 and the third gear 38 is 1/3 or 1/4, It may be 1/5 or the like, preferably 1/2 or 1/3.

The plurality of suctioned portions 54a and 58a are provided so as to be located on a circle whose axis is the axis of each of the first gear 34 and the third gear 38. Further, the suctioned portions 54a and 58a are provided at positions corresponding to the tooth portions 34a and 38a of every other first gear 34 and third gear 38, respectively. That is, the suctioned portions 54a and 58a are provided at positions circumferentially coincident with the tooth portions 34a and 38a of every other first gear 34 and third gear 38, respectively.
Further, these suctioned portions 54a and 58a are located on the inner peripheral side (axial center side) of the tooth tips of the respective tooth portions 34a and 38a of the first gear 34 and the third gear 38 as viewed in the axial direction. It is set as the structure provided. In the illustrated example, these suctioned portions 54a and 58a are provided so as to be located on the inner peripheral side of the tooth bottoms of the respective tooth portions 34a and 38a of the first gear 34 and the third gear 38 as viewed in the axial direction. An example is shown.
Further, the suctioned portions 54a and 58a are provided on the other axial side (the second gear side and the fourth gear side) of the first gear 34 and the third gear 38, respectively.

Further, in the present embodiment, the first gear 34 and the third gear 38 are nonmagnetic materials, and the attracted portions 54a and 58a are fixedly provided to the first gear 34 and the third gear 38, respectively. It is set as the structure provided in the disk-shaped bodies 54 and 58 which consist of magnetic bodies. The first gear 34 and the third gear 38 made of nonmagnetic material may be formed of nonmagnetic metal material such as stainless steel or synthetic resin material. The other gears 33, 37, 40, 41 and 46 may be made of nonmagnetic material.
The disk-like bodies 54 and 58 are thin plates disposed along the thickness direction in the axial direction of the first gear 34 and the third gear 38, and are substantially circular disks having each axis as a circle. It is in the form of Each of the disk-shaped bodies 54, 58 is rotated along and along the other axial direction side (the second gear side and the fourth gear side) of the first gear 34 and the third gear 38, respectively. Impossible fixed. That is, the disk-like members 54 and 58 are configured to rotate with the first gear 34 and the third gear 38, respectively. In the illustrated example, the insertion holes for the shafts 32 and 36 are provided in the disk-like members 54 and 58, and the disk-like members 54 and 58 are attached to the shafts 32 and 36 by retainers. Alternatively, the first gear 34 and the third gear 38 may be directly fixed to each of the first gear 34 and the third gear 38 by a stopper or an adhesive. In this case, each of the disc-like members 54 and 58 may be formed into an annular shape or the like.

Each of the suctioned portions 54a and 58a is provided at the outer peripheral end of each of the discoid members 54 and 58. In the present embodiment, each of the suctioned portions 54a and 58a is a protruding piece provided on the outer peripheral end of each of the disk-like members 54 and 58 so as to protrude radially outward. In other words, a plurality of recesses which are opened radially outward at equal intervals in the circumferential direction are provided as non-sucking portions 54b and 58b at the outer peripheral end of each of the disk-like members 54 and 58, and these non-sucking portions The remaining portions between 54b and 58b are referred to as suctioned portions 54a and 58a. The dimensions along the circumferential direction of the suctioned portions 54a, 58a and the non-sucked portions 54b, 58b are such that any of the sucked portions 54a, 58a is sucked by the magnets 52, 52 described later. The dimensions may be set as appropriate from the viewpoint of prevention and the like. In the illustrated example, an example in which the dimension in the circumferential direction of the suctioned portions 54a and 58a and the dimension in the circumferential direction of the non-suction portions 54b and 58b are substantially the same is shown.
Further, an example in which each of the suctioned portions 54a and 58a is viewed in the axial direction and has a substantially square shape is shown. It should be noted that, instead of such an embodiment, the tips in the protruding direction of the suctioned portions 54a and 58a may be formed in a pointed shape or in a curved shape.

  Further, the discoid bodies 54 and 58 may be made of a ferromagnetic metal material such as iron. Further, the suctioned portions 54a, 58a of the disk-like members 54, 58 are not limited to those configured by providing the unevenness at the outer peripheral end as described above, and the non-suctioned portions 54b, 58b are configured at the outer peripheral end. It is good also as an aspect etc. which provided the slit-like opening which carries out, and made the to-be-sucked part 54a and 58a the remaining part between openings. In this case, the arrangement positions of the magnets 52 and 52 described later may be appropriately modified. Further, the suctioned portions 54a and 58a are not limited to the above-described embodiment, and for example, the N pole and the S pole are alternately magnetized along the circumferential direction in the disk-like members 54 and 58, The poles may be the suctioned portions 54a and 58a. As the disc-like members 54 and 58 provided with the suctioned parts 54 a and 58 a, various other modifications are possible depending on the arrangement position of the magnets 52 and 52 described later.

The magnets 52, 52 on the apparatus body 31 side are provided to face the attracted portions 54a, 58a of the first gear 34 and the third gear 38, respectively. In this embodiment, the magnets 52 and 52 on the apparatus main body 31 side are provided radially outward on the tip end portions of the attracted portions 54a and 58a of the disk-like members 54 and 58 in the protruding direction. . The dimensions of the magnets 52, 52 in the circumferential direction may be set as appropriate so as to enable suction of any of the suctioned portions 54a, 58a and to prevent false suction. In the illustrated example, the dimension along the circumferential direction of the magnets 52, 52 is smaller than the dimension along the circumferential direction of the attracted portions 54a, 58a.
The magnet 52 for attracting the suctioned portion 54 a of the first gear 34 is provided to be located on the side opposite to the third gear of the first gear 34 in the door width direction. Further, the magnet 52 attracts the suctioned portion 54 a of any one of the first gear 34 and brings the first gear 34 into a position (positive posture) where the teeth 34 a can mesh with the teeth 40 a of the intermittent gear 40. It is supposed to be regulated.

  That is, since the first gear 34 is allowed to rotate in at least one direction with respect to the second gear 33 engaged with and rotated by the rack 19, it is considered that the first gear 34 rotates with respect to the second gear 33 due to vibration or the like. Be For example, as shown in FIG. 7, the tip of the tooth portion 34 a of the first gear 34 engaged with the tooth portion 40 a on the downstream side of the toothless portion 40 b of the intermittent gear 40 rotated clockwise in FIG. In a state (abnormal posture) located on the tip circle of the tooth portion 40a, the tips of the two interfere with each other. If the magnet 52 is provided as described above, as shown in FIG. 8, the first gear 34 is attracted so that one of the attracted portions 54 a faces the magnet 52 and is in a normal posture, that is, the teeth thereof 34a is maintained at a position where it can be meshed with the tooth portion 40a of the intermittent gear 40. Note that FIG. 7 merely illustrates the abnormal posture, that is, the state in which the tip of the tooth portion 34a of the first gear 34 and the tip of the tooth portion 40a of the intermittent gear 40 easily interfere with each other for convenience. In fact, since the magnet 52 is provided as described above, the first gear 34 is not stopped in such a state.

  The magnet 52 for attracting the suctioned portion 58a of the third gear 38 is provided so as to be located on the side opposite to the first gear of the third gear 38 in the door width direction. The magnet 52 attracts the attracted portion 58a of any of the third gear 38 so that the third gear 38 can be engaged with the teeth 40a of the intermittent gear 40 (the positive position (positive Position). That is, substantially in the same manner as described above, the third gear 38 is attracted so that any attracted portion 58a is opposed to the magnet 52 and is in the normal posture, that is, the teeth 38a mesh with the teeth 40a of the intermittent gear 40 It is maintained to be a possible position.

Moreover, these magnets 52 and 52 are provided in the control members 51 and 51 fixed to the apparatus main body 31 (also refer FIG. 1 (a)). The restriction members 51, 51 have the same configuration as each other. The restricting members 51 are disposed at positions where the magnets 52 face the attracted portions 54a and 58a of the first gear 34 and the third gear 38, respectively. Further, these restricting members 51 are fixed to the apparatus main body 31 so as to be position adjustable in the circumferential direction centering on the axis of the first gear 34 and the third gear 38. In the illustrated example, an example is shown in which the insertion holes through which the fasteners screwed into the female screw holes provided on the device main body 31 are inserted are arc-shaped elongated holes elongated in the circumferential direction.
A plurality of magnets 52 and 52 may be provided at intervals in the circumferential direction so as to be positioned on the outer peripheral side of each of the first gear 34 and the third gear 38. Also, in the above-described example, the magnets 52 and 52 are provided so as to be positioned radially outward of the attracted portions 54a and 58a of the disk-like members 54 and 58, but the present invention is limited to such an embodiment. I can not. For example, the magnets 52 and 52 may be provided so as to be positioned on one side in the axial direction of the attracted portions 54 a and 58 a of the disk-like members 54 and 58. The regulating members 51 provided with the magnets 52 are not limited to those configured as described above, and various modifications are possible.

The device body 31 holds the intermittent gear 40 including the gears 33, 34, 37, 38, the fifth gear 41, the braking mechanism 43, the displacement assisting mechanism 47, and the regulating members 51, 51 described above, and performs the first traveling It is fixed to the body 28 and the second traveling body 29.
As shown in FIG. 1A and FIG. 6, the device main body 31 has a thin plate shape in which the thickness direction is aligned with the door thickness direction. The device main body 31 holds the first shaft 32, the second shaft 36, the third shaft 42, and the one-piece shaft 48a, and includes the gears 33, 34, 37, 38, and the intermittent gear 40 including the fifth gear 41; The auxiliary mechanism 47 and the restriction members 51 and 51 are disposed on one side in the thickness direction of the apparatus main body 31. Further, the device main body 31 is provided with a connecting portion 31 b of the biasing member 49 of the displacement assisting mechanism 47 described above.

Further, at both end portions in the door width direction of the device main body 31, fixed piece portions 31a, 31a fixed to the first traveling body 28 and the second traveling body 29 are provided.
Moreover, in the example of a figure, the example which provided the cover piece part which protrudes in the door thickness direction one side in the upper end part of the apparatus main body 31 is shown. Moreover, the example which provided the opening which the upper end side site | part of the 2nd gearwheel 33 and the 4th gearwheel 37 is penetrated in this cover piece part is shown.
The device main body 31 for holding the members of the gear device 30 is not limited to the one as shown in the drawing, but may be configured in various manners.

The gear device 30 according to the present embodiment is capable of smoothly meshing the intermittent gear 40 with the gears (the first gear 34 and the third gear 38) 34, 38 meshing with the intermittent gear 40 by the above-mentioned configuration. However, it is possible to suppress the generation of wear and noise of the teeth 34a and 38a.
That is, the first gear 34 is positioned such that the teeth 34a (38a) of the first gear 34 (third gear 38) released from meshing with the intermittent gear 40 can be meshed with the teeth 40a of the intermittent gear 40. A magnet 52 for regulating (third gear 38) and a suctioned portion 54a (58a) are provided. Therefore, as described above, since the first gear 34 (third gear 38) is restricted to a position where it can be meshed with the tooth portion 40a of the intermittent gear 40, when transitioning from the meshed state to the meshed state It can be engaged smoothly. The first gear 34 (third gear 38) and the magnet 52 provided on one of the device main body 31, and the attracted portion 54a (58a) provided on the other and attracted to the magnet 52 Position regulation of the gear 34 (third gear 38) is performed. Therefore, since the first gear 34 (third gear 38) can be positionally regulated to the above-mentioned normal posture in a non-contact state, the wear of the tooth portion 34a (38a) of the first gear 34 (third gear 38) or Generation of abnormal noise can be suppressed.

Further, in the present embodiment, the plurality of suctioned portions 54a (58a) are provided on the first gear 34 (third gear 38) side at equal intervals in the circumferential direction of the first gear 34 (third gear 38). It has composition. Therefore, the apparatus configuration can be simplified as compared with the apparatus main body 31 side in which a plurality of suctioned portions are provided at equal intervals in the circumferential direction of the first gear 34 (third gear 38). .
Further, in the present embodiment, the number of the suctioned portions 54a (58a) is set to be an integer fraction of 2 or more of the number of teeth of the first gear 34 (third gear 38). Therefore, the need for reducing the size of the magnet 52 and the occurrence of false suction due to the magnet 52 as compared to the case where the attracted portion 54a (58a) is provided in the same number as the number of teeth of the first gear 34 (third gear 38) Can be reduced.
Further, in the present embodiment, the disk-shaped bodies 54 and 58 made of ferromagnetic material are fixedly provided on the first gear 34 (third gear 38) made of nonmagnetic material and the portion to be attracted 54a (58a) is fixed. It is assumed that Therefore, the suctioned portion 54a (58a) can be provided separately from the first gear 34 (the third gear 38), and the design freedom can be improved.

  In the present embodiment, the first gear 34 (third gear 38) is allowed to rotate in one direction with respect to the first shaft 32 (second shaft 36) via the one-way clutch mechanism 35 (39). Configuration. Therefore, it is possible that the motor 52 is easily displaced in one direction by vibration or the like in the state in which the engagement with the intermittent gear 40 is released because the idle rotation occurs in one direction as described above. The portion 54a (58a) can restrict the first gear 34 (third gear 38) to a position where meshing with the intermittent gear 40 is possible. Note that the one-way clutch mechanism 35 (39) may be not provided to cause such first gear 34 (third gear 38) to idle in one direction. In this case, the first gear 34 (third gear 38) can be rotated in at least one direction with respect to the axially supported object by the uneven fitting of the engagement convex portion 35a (39a) and the engagement concave portion 33a (37a) It may be done.

  Further, in the present embodiment, the second gear 33 (fourth gear 37) meshing with the rack 19 as the meshing target is provided on one side in the axial direction of the first gear 34 (third gear 38). Therefore, relative rotation is transmitted via the second gear 33 (fourth gear 37). Further, one of the first gear 34 (third gear 38) and the second gear 33 (fourth gear 37) is provided with an engagement projection 35a (39a) projecting in the axial direction, and the other is engaged An engagement recess 33a (37a) for receiving the protrusion 35a (39a) is provided. Therefore, the first gear 34 (third gear 38) is provided with play on both sides in the circumferential direction with respect to the second gear 33 (fourth gear 37). Position regulation of the three gears 38) is made smoother. In addition, it is good also as a structure which does not provide such an engagement convex part 35a (39a) and the engagement recessed part 33a (37a). In this case, the above one-way clutch mechanism 35 (39) may be provided.

Next, another embodiment according to the present invention will be described with reference to the drawings.
FIG. 9 is a view schematically showing an example of a gear device according to a second embodiment and a sliding door device provided with the same.
The differences from the first embodiment will be mainly described, and the same reference numerals will be given to similar configurations, and the description thereof will be omitted or simplified. The description of the same operations and actions will also be omitted or simplified.

  In the gear device 30A according to the present embodiment and the sliding door device 1A including the same, the configuration of the intermittent gear 40A is mainly different from that of the first embodiment. In the present embodiment, as shown in FIG. 9B, the intermittent gear 40A is a third gear provided coaxially to the first gear 34 and the fourth gear 37 provided coaxially to the second gear 33. It is set as the structure provided so that it might be located between 38 and. As shown in FIG. 9A, in the illustrated example, the third shaft 42A of the intermittent gear 40A is provided so as to be positioned at substantially the same height as the first shaft 32 and the second shaft 36. However, it may be configured to be located below or above the first shaft 32 and the second shaft 36. In the illustrated example, the intermittent gear 40A has a diameter smaller than that of the first embodiment and smaller than the first gear 34 and the third gear 38. An appropriate diameter may be used according to the distance or the like.

Further, in the present embodiment, as shown in FIG. 9A, without providing the fifth gear 41 and the sixth gear 46 as described above, the braking mechanism 43A is rotated around the third shaft 42A of the intermittent gear 40A. The braking force is applied to the With such a configuration, simplification and downsizing of the structure can be achieved. Further, the third shaft 42A of the intermittent gear 40A is used as a damper shaft of the damper main body 44. That is, the damper main body 44 of the braking mechanism 43A is configured to directly apply a braking force to the displacement of the intermittent gear 40A that is transmitted and displaced by the rotation of the third gear 38.
Also in the present embodiment, the suctioned portions 54a and 58a are provided on the first gear 34 and the third gear 38 respectively, and the suctioned portions 54a and 58a are suctioned on the device main body 31A side to form the first gear 34. The magnets 52, 52 are provided to regulate the third gear 38 in the above-mentioned normal posture.

Further, in the present embodiment, the gear device 30A is configured to be disposed such that the entire gear device 30A is positioned in the rail groove 16 of the upper rail 15. That is, the upper and lower dimensions of the gear device 30A are smaller than those of the first embodiment. Further, in the illustrated example, a lower plate portion projecting in the door thickness direction is provided at the lower end portion of the device main body 31A without providing a portion which protrudes downward in the device main body 31A. The example which provided fixed piece part 31Aa and 31Aa in the door width direction both ends is shown. Also in the present embodiment, the displacement assisting mechanism 47 as described above may be provided.
Also in the gear device 30A configured as described above, the door 10A moving a predetermined distance from the arbitrary open position to the closing side can be decelerated similarly to the above.
Further, also in the gear device 30A according to the present embodiment configured as described above and the sliding door device 1A including the same, substantially the same effects as the first embodiment can be obtained.

In each of the above embodiments, an example is shown in which the suctioned portion 54a (58a) is provided to the disk-like body 54 (58) provided in an attached manner to the first gear 34 (third gear 38). Not limited to such an aspect. For example, the suctioned portion 54a (58a) may be embedded in the first gear 34 (third gear 38).
In each of the above embodiments, an example is shown in which the number of the suctioned portions 54a (58a) is an integer fraction of 2 or more of the number of teeth of the first gear 34 (third gear 38). Not limited to such an aspect. The suctioned portion 54 a (58 a) may be provided as many as the number of teeth of the first gear 34 (third gear 38). In this case, the first gear 34 (third gear 38) itself may be made of a ferromagnetic material, and the teeth 34a (38a) may constitute the attracted portion 54a (58a).
In each of the above embodiments, the suctioned portion 54a (58a) is provided on the first gear 34 (third gear 38) side, and the magnets 52 and 52 are provided on the device main body 31, 31A side. Not limited to such an aspect. For example, a plurality of suctioned parts are provided on the device main body 31, 31A side at equal intervals in the circumferential direction of the first gear 34 (third gear 38), and on the first gear 34 (third gear 38) side, It is good also as composition etc. which provided a magnet which attracts a suction object in any one.

In each of the above embodiments, the first gear 34 is provided coaxially with the second gear 33, and the third gear 38 is provided coaxially with the fourth gear 37. It is not limited. For example, the first gear 34 can be interlocked with the second gear 33, and the third gear 38 can be interlocked with the fourth gear 37 by various rotation transmission mechanisms such as gear transmission, friction transmission, winding transmission, etc. It is good also as an aspect provided.
In each of the above embodiments, one of the first gear 34 and the third gear 38 is shifted from the state in which engagement with the intermittent gear 40 is released to the state in which the intermittent gear 40 is rotated and engaged by the other. Although an example is shown, it is not limited to such an aspect. For example, only the first gear 34 may be provided, and the intermittent gear 40 may be rotated by another rotation transmission mechanism. In this case, the braking mechanism 43 may be provided to apply the braking force to the first gear 34. Alternatively, instead of transmitting the rotation intermittently to the braking mechanism 43, another rotation transmission mechanism may be used. Alternatively, the rotation may be transmitted intermittently.

  In the above embodiments, the gears 33, 34, 37, 38, 40 (40A), 41, 46 are spur gears, but may be helical gears or helical gears or the like. . The specific configuration of each member of the gear devices 30 and 30A according to the above-described embodiments is not limited to the above-described configuration, and various modifications are possible. Moreover, although the example mentioned above demonstrated the example which installed gear apparatus 30 and 30A which concerns on said each embodiment in the door 10, 10A of the sliding door apparatus 1 and 1A, it is not restricted to such an aspect. The gear devices 30 and 30A according to the above-described embodiments may be retrofittedly installed on an existing door, or may be installed on various installation targets other than the door.

30, 30A Gear device 31, 31A Device main body 32 1st shaft (shaft)
33 second gear 33a engagement recess 34 first gear 34a tooth portion 35 one-way clutch mechanism 35a engagement protrusion 36 second shaft (shaft)
37 Fourth Gear (Second Gear)
37a engagement recess 38 third gear (first gear)
38a Tooth 39 One-way clutch mechanism 39a Engaging projection 40, 40A Intermittent gear 40a Tooth 40b Missing tooth 52 Magnet 54, 58 Disc-like body (ferromagnetic material)
54a, 58a Suctioned part 19 rack (engagement target)

Claims (6)

  A first gear allowed to rotate in at least one direction with respect to the shaft, an intermittent gear provided with a tooth portion meshing with the first gear and a toothless portion released from meshing, these first gear and intermittent And a magnet provided on one of the first gear and the device main body, and a attracted portion provided on the other and attracted to the magnet. The suctioned portion is configured to regulate the first gear so that the teeth of the first gear whose mesh with the intermittent gear is released can be meshed with the teeth of the intermittent gear. A gear device characterized by In claim 1,
A plurality of the suctioned portions are provided on the first gear side at equal intervals in the circumferential direction of the first gear, and on the apparatus main body side to suction any of the plurality of suctioned portions. A gear device characterized in that the magnet is provided. In claim 2,
A gear device characterized in that the number of the attracted portions is an integral fraction of 2 or more of the number of teeth of the first gear. In claim 2 or 3,
A gear device characterized in that the first gear is a nonmagnetic material, and the attracted portion is provided on a ferromagnetic material fixedly provided on the first gear. In any one of claims 1 to 4,
A gear device characterized in that the first gear is allowed to rotate in one direction with respect to the shaft via a one-way clutch mechanism. In any one of claims 1 to 5,
A second gear that meshes with an object to be meshed is provided on one side of the first gear in the axial direction,
One of the first gear and the second gear is provided with an axially projecting engagement projection, and the other allows rotation of the first gear relative to the second gear. A gear device characterized in that an engagement recess is provided for receiving the engagement protrusion.

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