JP2022158215A - Door opening/closing device - Google Patents

Abstract

To provide a door opening/closing device that makes it possible to enhance the degree of freedom of selection and the degree of freedom of arrangement of a driving source.SOLUTION: A door opening/closing device of the embodiment includes: a reduction gear device 31 having an output shaft 30 that outputs a rotational force; a drive pulley 33 having a drive shaft 33a to move the door in an opening/closing manner by receiving the rotational force of the output shaft 30; a rod 62 connected to a latch that unlocks the door; and a transmission mechanism 100 capable of transmitting the output of the output shaft 30 to the rod 62 and the drive pulley 33. The transmission mechanism 100 has: a female screw 101 connected to the output shaft 30 rotatable about the output shaft 30 and movable in an axial direction along the output shaft 30; a male screw 102 connected to the drive shaft 33a rotatable about the drive shaft 33a; and a transmission member 103 for transmitting a forwarding force to the rod 62 when the female screw 101 moves while engaging the male screw 102 by receiving the rotational force output by the output shaft 30 in the fully closed position of the door.SELECTED DRAWING: Figure 6

Description

The present invention relates to a door operator.

Conventionally, a door opening/closing device capable of opening and closing a door is known. For example, Patent Document 1 discloses a fixed beam fixed to a frame, a moving beam connected to a door and capable of moving laterally with respect to the fixed beam, and a motor fixed to the moving beam for moving the door. A configuration is disclosed. The motor extends along the lateral direction. The motor housing (drive cam) has slots into which pins fixed to the fixed beam fit. The slot is spirally formed along the outer circumference of the housing. When locking the door, the pin fixed to the fixed beam is held in place in the slot by the elastic force of the spring.

WO2014/154964

However, in the case of a configuration in which a pin that fits into a slot provided in the housing of the motor is provided and the motor itself rotates and the pin fits into the slot to lock the door, the degree of freedom in selecting and arranging the motor is limited. There is a limit. Therefore, there is room for improvement in increasing the degree of freedom in selecting and arranging the motor (driving source).

SUMMARY OF THE INVENTION It is an object of the present invention to provide a door opening/closing device capable of increasing the degree of freedom in selecting and arranging a drive source.

As means for solving the above problems, aspects of the present invention have the following configurations.
(1) A door opening/closing device according to an aspect of the present invention includes a driving body having an output shaft that outputs a rotational force transmitted from a driving source, and a driving body that receives the rotational force of the output shaft and rotates to open and close a door. a rotating body having a shaft; a connecting member connected to an unlocking portion for unlocking the door; and a transmission mechanism capable of transmitting the output of the output shaft to the connecting member and the rotating body, The transmission mechanism is rotatable about the output shaft and is connected to the output shaft so as to be movable in the axial direction along the output shaft. a screw member of the other of the female screw or the male screw rotatably connected to the rotating shaft; a transmission member that transmits the advancing force of the one screw member to the connecting member to operate the unlocking portion when the two screw members move while meshing with each other, the transmission mechanism comprising: After the door is unlocked by the unlocking portion, the door is opened by transmitting the rotation of the output shaft to the rotation shaft via the one screw member and the other screw member.

According to this configuration, the forward force of one of the screw members is transmitted to the unlocking portion via the transmitting member and the connecting member to unlock the door, and after the door is unlocked by the unlocking portion. Since the door can be opened by transmitting the rotation of the output shaft to the rotating shaft via one screw member and the other screw member, no special device is required for the drive source. Therefore, it is possible to increase the degree of freedom in selecting and arranging the drive source.

(2) In the door opening/closing device according to (1) above, the transmission member converts force when the one screw member moves in the axial direction into force in the rotational direction around the output shaft. and may be transmitted to the connecting member.

(3) In the door opening/closing device described in (2) above, the transmission mechanism further includes a fixing pin that is immovably fixed, and the transmission member rotates relative to the one screw member about the output shaft. The transmission member has an opening extending obliquely with respect to the axial direction, and the fixing pin is fitted in the opening. , when the one screw member advances in the axial direction and pushes the transmission member, and the transmission member rotates with respect to the one screw member, thereby moving the one screw member in the axial direction may be converted into a rotational force about the output shaft.

(4) In the door opening/closing device according to any one of (1) to (3) above, the transmission member is rotatable relative to the one screw member via a bearing. and the one screw member may include a pressing portion that presses against the bearing when advancing in the axial direction.

(5) In the door opening/closing device according to any one of (1) to (4) above, the rotating shaft is a driving shaft of a driving pulley that drives a belt for opening and closing the door, After the door is unlocked, when the one screw member hits the drive pulley and cannot move forward, the rotation of the output shaft is transferred to the drive shaft via the one screw member and the other screw member. By transmitting the rotation of the drive shaft to the belt, the door may be opened.

(6) In the door opening/closing device according to any one of (1) to (5) above, the coupling member includes a cylinder connected to the unlocking portion, a piston connected to the transmission member, wherein the piston is connected to an elastic member that applies an elastic force to the piston, the piston moves against the elastic force and hits the cylinder, and the cylinder moves integrally with the piston by a predetermined amount or more. may unlock the door.

(7) In the door opening/closing device according to any one of (1) to (6) above, the rotating shaft is a driving shaft of a driving pulley that drives a belt for opening and closing the door, When the rotational direction of the output shaft rotates in a direction opposite to that during the door opening operation, and the one screw member moves in a direction opposite to the forward movement direction and hits the driving body, the output shaft rotates in the reverse direction. The direction of rotation is transmitted to the drive shaft via the one screw member and the other screw member, so that the rotation of the drive shaft in the direction opposite to the door opening operation is transmitted to the belt. By doing so, the door may be closed.

(8) In the door opening/closing device according to any one of (1) to (7) above, the rotating shaft rotates coaxially with the output shaft, and the one screw member rotates with the output shaft. It may be the female screw that rotates coaxially, and the other screw member may be the male screw that rotates coaxially with the output shaft.

(9) A door opening/closing device according to an aspect of the present invention includes a driving body having an output shaft that outputs a rotational force transmitted from a driving source, and a driving body that receives the rotational force of the output shaft and rotates to open and close the door. a rotating body having a shaft; a connecting member connected to an unlocking portion for unlocking the door; and a transmission mechanism capable of transmitting the output of the output shaft to the connecting member and the rotating body, The transmission mechanism includes a screw member of one of a male screw and a female screw connected to the output shaft so as to be rotatable about the output shaft, and a screw member that is rotatable about the rotation shaft and axially along the rotation shaft. a screw member of the other of the female screw or the male screw movably connected to the rotating shaft; a transmission member that transmits the advancing force of the other screw member to the connecting member to operate the unlocking portion when the other screw member moves while meshing with each other, the transmission mechanism comprising: After the door is unlocked by the unlocking portion, the door is opened by transmitting the rotation of the output shaft to the rotation shaft via the one screw member and the other screw member.

According to this configuration, the forward force of the other screw member is transmitted to the unlocking portion via the transmitting member and the connecting member to unlock the door, and after the door is unlocked by the unlocking portion. Since the door can be opened by transmitting the rotation of the output shaft to the rotating shaft via one screw member and the other screw member, no special device is required for the drive source. Therefore, it is possible to increase the degree of freedom in selecting and arranging the drive source.

ADVANTAGE OF THE INVENTION According to this invention, the door opening/closing apparatus which can raise the selection flexibility and arrangement|positioning freedom of a drive source can be provided.

1 is a perspective view of a door opening/closing device according to a first embodiment; FIG. 3 is a perspective view of the periphery including the lock mechanism of the first embodiment; FIG. FIG. 3 is a perspective view of the surroundings including the rotating body and the supporting body of the first embodiment; FIG. 4 is an operation explanatory diagram of the restraining member of the first embodiment; FIG. 2 is a perspective view of the transmission mechanism of the first embodiment, including a cross section cut along the YZ plane. FIG. 2 is a perspective view of the transmission mechanism of the first embodiment, including a cross section cut along the XY plane. FIG. 4 is a perspective view of the periphery including the fixing pin of the first embodiment; It is a perspective view containing the cross section of the rod of 1st Embodiment. 4 is a perspective view for explaining the operation of the transmission mechanism of the first embodiment; FIG. FIG. 8 is another perspective view for explaining the operation of the transmission mechanism of the first embodiment; It is a peripheral perspective view including the cross section which cut|disconnected the transmission mechanism of 2nd Embodiment by XY plane. It is a perspective view of the periphery including the fixing pin of 2nd Embodiment. It is arrangement explanatory drawing of the output shaft of the modification of embodiment, and a rotating shaft.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, an example in which a door opening/closing device is provided with a pair of doors for opening and closing the entrance/exit of a railway vehicle (vehicle) will be described. In the following description, expressions indicating relative or absolute arrangement such as "parallel", "perpendicular", "center", "coaxial", etc. not only strictly mean such arrangement, It also includes the state of being relatively displaced with a tolerance or an angle or distance to the extent that the same function can be obtained. In addition, in the drawings used for the following description, the scale of each member is appropriately changed so that each member has a recognizable size.

<First Embodiment>
FIG. 1 is a perspective view of the door opening/closing device of the first embodiment.
As shown in FIG. 1, the door opening/closing device 1 includes a pair of doors 2, a fixed base 3, a slide base 4, a guide rail 5 (see FIG. 2), a drive source 6, a restraint member 7, and a lock. a mechanism 8; In addition, in FIG. 1, the pair of doors 2 is indicated by a two-dot chain line. FIG. 1 shows a state in which the door 2 is positioned at the fully closed position.

In the following description, an X, Y, Z orthogonal coordinate system will be used as necessary. The X direction coincides with the longitudinal direction of the vehicle. The Y direction matches the width direction of the vehicle. The Z direction indicates the height direction (gravitational direction) of the vehicle that is orthogonal to the X and Y directions. In the following description, among the X direction, Y direction and Z direction, the arrow side in the drawing is the plus (+) side, and the opposite side to the arrow is the minus (-) side. The +Y side corresponds to the outside in the width direction, and the -Y side corresponds to the inside in the width direction. The +Z side corresponds to the upper side in the direction of gravity, and the -Z side corresponds to the lower side in the direction of gravity.

The door opening/closing device 1 supports the door 2 so that the outer surface of the side wall of the vehicle body and the outer surface of the door 2 are flush with each other when the door 2 is in the fully closed position. The door 2 includes a door leaf 10 and a door hanger 11 connected to the door leaf 10. - 特許庁Door 2 is attached to slide base 4 . The door hanger 11 is supported by the slide base 4 so as to be movable in the front-rear direction with respect to the slide base 4 .

The fixed base 3 is fixed to the vehicle body of the vehicle. The vehicle body is a frame that forms the skeleton of the vehicle. The fixed base 3 is provided above the entrance/exit 15 of the vehicle. The fixed base 3 extends in the front-rear direction so as to straddle the upper edge of the entrance/exit 15 . Rail bases 9 extending in the width direction are connected to both ends of the fixed base 3 in the front-rear direction.

The slide base 4 slides in the width direction with respect to the fixed base 3 by driving force from the drive source 6, thereby moving the door 2 in the width direction. The slide base 4 is provided below the fixed base 3 . The slide base 4 extends in the front-rear direction along the upper edge of the entrance/exit 15 . Both ends of the slide base 4 in the front-rear direction are movable in the width direction along the rail base 9 .

FIG. 2 is a perspective view of the periphery including the lock mechanism of the first embodiment. FIG. 3 is a perspective view of the surroundings including the rotator and support of the first embodiment.
As shown in FIG. 2, the guide rail 5 defines an opening/closing path 20 of the door 2 for opening/closing the entrance/exit 15 (see FIG. 1) of the vehicle. The guide rail 5 is provided above the entrance/exit 15 . The guide rail 5 is supported by the fixed base 3 (see FIG. 1). The guide rail 5 is attached to the fixed base 3 with fastening members such as a plurality of bolts.

The opening/closing path 20 includes a straight portion 21 extending in the front-rear direction and an inclined portion 22 inclined with respect to the straight portion 21 . A connecting portion 23 between the straight portion 21 and the inclined portion 22 is curved in an arc. In addition, in FIG. 2, a part of the linear portion 21 is indicated by a two-dot chain line.

As shown in FIG. 1 , the driving source 6 outputs driving force for moving the door 2 . For example, the drive source 6 is a motor. The output shaft of the motor rotates around an axis extending in the front-rear direction. For example, the output shaft of the motor is rotatable in one direction and the other direction (forward and reverse rotation) around an axis along the longitudinal direction. The drive source 6 is connected to a movable power cable 29, a so-called Cableveyor (registered trademark). The drive source 6 is supported by the slide base 4 via a transmission mechanism or the like. The drive source 6 is movable in the width direction together with the movement of the slide base 4 in the width direction.

FIG. 5 is a peripheral perspective view including a cross-section of the transmission mechanism of the first embodiment taken along the YZ plane.
As shown in FIG. 5, the door opening/closing device 1 includes a speed reducer 31 (an example of a driving body) having an output shaft 30 that outputs a rotational force transmitted from a drive source 6 (see FIG. 1), A drive pulley 33 (an example of a rotating body) having a drive shaft 33a (an example of a rotating shaft) for receiving rotation to open and close the door, and a latch 9 for unlocking the door (an example of the unlocking portion, FIG. 2). ), and a transmission mechanism 100 capable of transmitting the output of the output shaft 30 to the rod 62 and the drive pulley 33 .

As shown in FIG. 1, the reduction gear 31 reduces the driving force from the driving source 6 and outputs it. The speed reducer 31 also functions as a power conversion mechanism that converts the direction of the driving force from the drive source 6 . The speed reducer 31 converts the rotation of the output shaft of the motor about the axis along the longitudinal direction into the rotation about the axis along the width direction. As shown in FIG. 5, the speed reducer 31 is connected to the slide base 4 via a bracket 80. As shown in FIG.

The drive shaft 33 a rotates coaxially with the output shaft 30 . The driving pulley 33 is rotatable around an axis extending in the width direction coaxial with the output shaft 30 . The drive pulley 33 is provided on the −X side of the slide base 4 . The driving pulley 33 is connected to the slide base 4 via a bearing 82 and a bracket 83 so as to be rotatable around an axis extending in the width direction coaxial with the output shaft 30 .

As shown in FIG. 1, a driven pulley 34 is provided on the side opposite to the drive pulley 33 in the front-rear direction of the slide base 4 (that is, on the +X side of the slide base). The driven pulley 34 is rotatable around an axis parallel to the drive axis of the drive pulley 33 (an axis along the width direction).

A belt 32 for opening and closing the door 2 is stretched over the drive pulley 33 and the driven pulley 34 . The belt 32 moves (rotates) around the drive pulley 33 and the driven pulley 34 in conjunction with the rotation of the drive pulley 33 . A door hanger 11 is connected to the belt 32 . The door hanger 11 moves forward and backward as the belt 32 moves. Attached to the belt 32 is a connecting member 35 that moves along with the movement of the belt 32 . As shown in FIG. 3 , the connecting member 35 supports a rotating body 36 and a supporting body 37 .

For example, the rotating body 36 is a roller that rolls along the opening/closing path 20 . The rotating body 36 moves integrally with the door 2 (see FIG. 1) by the driving force from the drive source 6 (see FIG. 1). The rotating body 36 rolls along the opening/closing path 20 while being guided by the guide rail 5 when the door 2 is opened and closed. The rotating body 36 is rotatably connected to the connecting member 35 about an axis extending in the height direction. The shape of the rotating body 36 is circular when viewed from the height direction.

As shown in FIG. 1, the door 2 on the −X side of the pair of doors 2 is connected to the upper portion of the belt 32 together with the connecting member 35 via the door hanger 11 . On the other hand, the door 2 on the +X side is connected to the lower portion of the belt 32 via the door hanger 11 . As described above, the belt 32 is stretched over the drive pulley 33 and the driven pulley 34 which are separated from each other in the front-rear direction. Moving. Therefore, when the belt 32 moves, the door 2 and the connecting member 35 on the -X side and the door 2 on the +X side move in opposite directions in the front-rear direction.

The pair of doors 2 are moved from the fully closed position shown in FIG. By moving the connected door hanger 11 and connecting member 35, it moves to the fully open position. Here, the fully open position means a position where the pair of doors 2 open (fully open) the entrance/exit 15 and the pair of doors 2 protrude to the outside of the vehicle. In the example of FIG. 1, the door 2 on the -X side is first moved outward in the width direction (specifically, diagonally including the width direction) from the fully closed position, and then moved straight in the -X direction to fully open. reach the position. On the other hand, the door 2 on the +X side first moves outward in the width direction (specifically, obliquely including the width direction) from the fully closed position, and then moves straight in the +X direction to reach the fully open position.

The door driving method is not limited to the so-called belt type in which the door opening/closing device includes the belt 32 described above. For example, the door driving method may be a so-called screw type, in which a screw shaft corresponding to a bolt is rotated by a motor to open and close a door attached to a ball nut corresponding to a nut. Alternatively, the door driving method may be a so-called rack and pinion method, in which a pinion of a rack and pinion mechanism is rotated by a motor to open and close a door attached to a rack rail. For example, the door drive system can be changed according to the required specifications.

As shown in FIG. 3, support 37 extends upwardly from connecting member 35 . For example, the support 37 is a pin extending in the height direction. The support 37 moves integrally with the door 2 (see FIG. 1) by the driving force from the drive source 6 (see FIG. 1). The support 37 is provided apart from the rotating body 36 so as not to contact the guide rail 5 when the door 2 is opened and closed.

The restraining member 7 restrains the rotor 36 in the fully closed position of the door 2 (see FIG. 1). The restraining member 7 is arranged to be shifted in the height direction with respect to the guide rail 5 . The restraint member 7 is provided below the guide rail 5 . The restraining member 7 is rotatably provided around a shaft 39 extending in the height direction.

The upper portion of shaft 39 is fixed to guide rail 5 . As shown in FIG. 2, a torsion spring 40 (elastic member) is wound around the shaft 39 . Hereinafter, the position where the door is not constrained is called the "unconstrained position", and the position where the rotating body 36 is constrained in the fully closed position of the door is called the "constrained position". The restrained position is the same position as the fully closed position of the door. The position of the restraining member 7 shown in FIGS. 1 to 3 and the position of the restraining member 7 indicated by the solid line in FIG. 4 indicate the restraining position. The position of the restraining member 7 indicated by the two-dot chain line in FIG. 4 indicates the non-restraining position. The torsion spring 40 applies an elastic force to the restraining member 7 so that the restraining member 7 is kept in the non-restraining position (the position indicated by the two-dot chain line in FIG. 4).

The restraint member 7 is held at the non-restraint position (the position indicated by the two-dot chain line in FIG. 4) by the elastic force of the torsion spring 40 when no external force acts. Hereinafter, the direction in which the door 2 closes will be referred to as the "closing direction".

Here, the closing direction means the moving direction of the door 2 from the fully open position to the fully closed position. When the door 2 is closed from the fully open position, it first moves straight in the front-rear direction, but then moves inward in the width direction (specifically, obliquely including the width direction). In this manner, the direction of movement of the door 2 changes between the beginning and end of movement in the closing direction. In each figure, the closing direction of the door on the -X side of the pair of doors 2 is indicated by the arrow Vc direction (specifically, the component along the front-rear direction in the closing direction).

The restraining member 7 is pushed by the rotating body 36 when the rotating body 36 moves in the closing direction Vc along the opening/closing path 20, so that the restraining member 7 is moved from the unrestrained position (the position indicated by the two-dot chain line in FIG. 4) to the restrained position (see FIG. 4). 4).

As shown in FIG. 2, the restraining member 7 includes a first arm 41 and a second arm 42 arranged in order in the closing direction Vc. The first arm 41 and the second arm 42 are integrally connected so as to form a U shape when viewed from the height direction. When the restraint member 7 is in the non-restraint position (the position indicated by the two-dot chain line in FIG. 4), the first arm 41 does not cross the opening/closing path 20 and the second arm 42 crosses the opening/closing path 20 . The first arm 41 and the second arm 42 traverse the opening/closing path 20 when the restraint member 7 is positioned at the restraint position (solid line position in FIG. 4).

As shown in FIG. 4, when the restraint member 7 is positioned at the non-restraint position, the first arm 41 is arranged at a position (a position indicated by a two-dot chain line in FIG. 4) avoiding the opening/closing path 20. As shown in FIG. When the restraint member 7 is positioned at the non-restraint position, the +Y side end of the first arm 41 is arranged on the −Y side of the opening/closing path 20 . The first arm 41 has a restraining wall 43 that slopes toward the closing direction Vc when viewed from the height direction when the restraining member 7 is positioned at the non-restraining position. The restraint wall 43 is a portion that restrains the support 37 (see FIG. 3) in the fully closed position of the door. The restraint wall 43 constitutes the inner surface of a groove 44 formed in the first arm 41 .

The second arm 42 is spaced apart from the first arm 41 in the closing direction Vc. The second arm 42 has a first surface 45 perpendicular to the inclined portion 22 when the restraint member 7 is in the non-restraint position (the position indicated by the two-dot chain line in FIG. 4), a second surface 46 perpendicular to the inclined portion 22 when positioned at the solid line position in FIG.

The first surface 45 is continuous with the second surface 46 so as to be inclined in the +X direction when viewed from the height direction. The first surface 45 crosses the +Y side portion of the inclined portion 22 (the portion not crossed by the second surface 46) when the restraining member 7 is in the non-restraining position (the position indicated by the two-dot chain line in FIG. 4). do. The first surface 45 does not traverse the inclined portion 22 when the restraining member 7 is in the restraining position (solid line position in FIG. 4). When the restraint member 7 is positioned at the restraint position, the first surface 45 is arranged on the +X side of the inclined portion 22 .

The second surface 46 constitutes the inner surface of a U-shaped opening 47 formed in the restraining member 7 . The second surface 46 covers the −Y side portion of the inclined portion 22 (the portion not crossed by the first surface 45) when the restraining member 7 is in the non-restraining position (the position indicated by the two-dot chain line in FIG. 4). cross. The second surface 46 generally traverses the ramp portion 22 when the restraining member 7 is in the restraining position (solid line position in FIG. 4).

The restraint member 7 includes a held portion 48 held by the lock mechanism 8 . The held portion 48 is provided on the opposite side of the portion that holds the rotating body 36 across the shaft 39 (for example, the portion where the second arm 42 is provided). The held portion 48 extends along a direction orthogonal to the shaft 39 when viewed from the height direction. The held portion 48 extends in the -X direction from a portion near the shaft 39 when the restraining member 7 is positioned at the restraining position (the solid line position in FIG. 4). The held portion 48 is integrally formed of the same member as the restraining member 7 .

The restraining member 7 is provided with a pushing member 50 that pushes a switch 51 when the restraining member 7 is positioned at the restraining position. For example, the switch 51 is a switch that detects that the door is locked in the fully closed position. The pressing member 50 is provided on the closing direction Vc side of the shaft 39 . The pushing member 50 is provided on the opposite side of the held portion 48 with the shaft 39 interposed therebetween.

The pressing member 50 is detachably attached to the restraining member 7 . The pushing member 50 has an elongated hole 52 along the direction of rotation of the restraining member 7 (the circumferential direction of the shaft 39). The pressing member 50 is attached to the restraining member 7 by a plurality of (for example, two in this embodiment) bolts 53 arranged along the long hole 52 .

The lock mechanism 8 holds the restraining member 7 positioned at the restraining position (solid line position in FIG. 4). As shown in FIG. 2, the lock mechanism 8 includes a lever 59 that swings by driving force from the drive source 6 (see FIG. 1). Lever 59 is connected to drive source 6 via link mechanism 60 including arm 61 and rod 62 (see FIG. 1).

When the restraining member 7 is moved to the restraining position, the lever 59 is pushed by the held portion 48 of the restraining member 7 (specifically, the portion extending upward from the tip of the held portion 48), and the lever 59 moves toward the arrow in FIG. Move in the Lm direction. Then, the latch 9 inside the lock mechanism 8 is locked, and the held portion 48 of the restraining member 7 is supported by the lever 59 . As a result, the rotator 36 and the support 37 are restrained by the restraining member 7 in the fully closed position of the door, and the door is locked (locked state).

On the other hand, when the arm 61 is pulled by the drive force from the drive source 6, the latch 9 inside the lock mechanism 8 is unlocked, and the lever 59 moves in the direction opposite to the arrow Lm direction in FIG. Then, the held portion 48 of the restraining member 7 is released from the support by the lever 59 . As a result, the restraint member 7 returns to the non-restraint position (the position indicated by the two-dot chain line in FIG. 4) by the elastic force (restoring force) of the torsion spring 40 . As a result, restraint of the rotor 36 and the support 37 by the restraint member 7 is released, and the door is unlocked (unlocked state).

4A and 4B are operation explanatory diagrams of the restraining member 7 of the first embodiment. In FIG. 4, the restraining member 7 positioned at the restraining position is indicated by a solid line, and the restraining member 7 positioned at the non-constraining position is indicated by a two-dot chain line.
An elastic force from a torsion spring 40 is constantly applied to the restraining member 7 . Therefore, when no external force acts on the restraining member 7, the restraining member 7 is held at the non-restraining position (the position indicated by the two-dot chain line in FIG. 4). When the restraint member 7 is located at the non-restraint position, the rotating body 36 and the support body 37 are movable together with the door by the driving force from the driving source 6 (see FIG. 1).

The rotor 36 (see FIG. 3) rolls along the opening/closing path 20 while being guided by the guide rails 5 when the door is opened and closed. Specifically, when the door 2 is closed from the fully open position, the rotating body 36 first moves straight along the straight portion 21 (see FIG. 2), but then moves along the inclined portion 22 inward in the width direction. (Specifically, diagonally including the width direction). In this manner, the direction of movement of the rotating body 36 changes between the beginning and the end of movement in the closing direction.
On the other hand, the support 37 (see FIG. 3) moves along a path spaced below the opening/closing path 20 so as not to come into contact with the guide rail 5 when the door is opened and closed.

When the rotating body 36 moves along the opening/closing path 20 in the closing direction Vc, the rotating body 36 first contacts the second arm 42 crossing the opening/closing path 20 (the second arm 42 indicated by the chain double-dashed line in FIG. 4). When the rotating body 36 moves further in the closing direction Vc along the opening/closing direction, the rotating body 36 pushes the second arm 42 in the closing direction Vc against the elastic force of the torsion spring 40 . By pushing the second arm 42 in the closing direction Vc by the rotating body 36, the restraint member 7 is moved (rotated) from the non-restraint position (the position indicated by the two-dot chain line in FIG. 4) to the restrained position (the position indicated by the solid line in FIG. 4). )do.

When the restraining member 7 moves to the restraining position (the solid line position in FIG. 4), the held portion 48 of the restraining member 7 pushes the lever 59 . As a result, the lever 59 moves in the direction of the arrow Lm in FIG. Then, the latch 9 inside the lock mechanism 8 is locked. By locking the latch 9, the lock mechanism 8 holds the held portion 48 of the restraining member 7 positioned at the door fully closed position (restraint position) by means of the lever 59 (see FIG. 2).

When the restraint member 7 is positioned at the restraint position, each of the first arm 41 and the second arm 42 traverses the opening/closing path 20 . As shown in FIG. 3, the first arm 41 prevents the rotating body 36 and the supporting body 37 from moving along the opening/closing path 20 in the direction opposite to the closing direction Vc when the restraining member 7 is positioned at the restraining position. Restrict. The second arm 42 restricts the rotating body 36 from further moving in the direction of the arrow Vc along the opening/closing direction when the restraining member 7 is positioned at the restraining position.
The restraining wall 43 of the first arm 41 restrains the support 37 from moving in the direction opposite to the arrow Vc when the restraining member 7 is positioned at the restraining position.

In this manner, the rotor 36 and the support 37 are restrained by the restraining member 7 in the fully closed position of the door. The rotating body 36 and the support 37 are restrained by the restraining member 7, so that the door is locked (locked state). When the restraining member 7 is positioned at the restraining position, the switch 51 is pushed by the pushing member 50 (see FIG. 4). Thereby, it is detected that the door is locked in the fully closed position.

On the other hand, when the door is to be unlocked from the locked state, the drive force from the drive source 6 pulls the arm 61 (see FIG. 2). Then, the latch 9 inside the lock mechanism 8 is unlocked, and the lever 59 moves in the direction opposite to the arrow Lm direction in FIG. Then, the held portion 48 of the restraining member 7 is released from the support by the lever 59 . As a result, the restraint member 7 returns to the non-restraint position (the position indicated by the two-dot chain line in FIG. 4) by the elastic force (restoring force) of the torsion spring 40 . The rotating body 36 and the supporting body 37 (see FIG. 3) can move in the direction opposite to the closing direction Vc along the opening/closing path 20 by releasing the restraint by the restraining member 7 . This unlocks the door (unlocked state).

FIG. 6 is a perspective view of the transmission mechanism 100 of the first embodiment, including a cross section taken along the XY plane. FIG. 7 is a perspective view of the periphery including the fixing pin 107 of the first embodiment.
As shown in FIG. 6, the transmission mechanism 100 includes a female thread 101 (one example of a male or female screw member), a male thread 102 (an example of the other male or female screw member), and a transmission member 103. Prepare.

Female thread 101 rotates coaxially with output shaft 30 . Female thread 101 is connected to output shaft 30 so as to be rotatable about output shaft 30 and to be axially movable along output shaft 30 . Female thread 101 is formed in a tubular shape extending in the axial direction along output shaft 30 . A threaded portion 101 a that meshes with the male thread 102 is provided on the inner circumference of the +Y side of the female thread 101 .

A boss 104 extending in the axial direction along the output shaft 30 is fixed to the output shaft 30 . The boss 104 includes a boss body 104a extending in the axial direction along the output shaft 30, and a flange 104b projecting radially outward (outward in a direction orthogonal to the axial direction) from the -Y side of the boss body 104a.

The outer circumference of the boss 104 and the inner circumference of the boss 101 are spline-fitted with each other via the balls 105 . A plurality of grooves 104c (hereinafter also referred to as "boss side grooves 104c") extending in parallel with the axial direction along the output shaft 30 and arranged in the circumferential direction are provided on the outer periphery of the boss 104 on the +Y side of the flange 104b. ing. A plurality of grooves 101c extending parallel to the axial direction along the output shaft 30 and arranged in the circumferential direction (hereinafter also referred to as "female thread side grooves 101c") are provided on the inner periphery of the female thread 101 on the -Y side of the threaded portion 101a. is provided.

A ball 105 is fitted in the boss side groove 104c and the female thread side groove 101c. A plurality of balls 105 are provided between the outer circumference of the boss 104 and the inner circumference of the internal thread 101 (in the example of FIG. 6, two balls are arranged in the axial direction in each groove). A portion of the ball 105 on the output shaft 30 side is fitted in the boss side groove 104c. A portion of the ball 105 opposite to the output shaft 30 is fitted in the female thread side groove 101c. Balls 105 roll in each groove as female thread 101 rotates about output shaft 30 or as female thread 101 moves axially along output shaft 30 .

The outer periphery of the boss 104 and the inner periphery of the internal thread 101 are not limited to being fitted to each other by splines via the balls 105 . The outer circumference of the boss 104 and the inner circumference of the female thread 101 may be fitted together by splines without the balls 105 interposed therebetween. For example, the boss 104 does not have to be fixed to the output shaft 30 . For example, the internal thread 101 may be connected to the output shaft 30 so as to be rotatable around the output shaft 30 and movably axially along the output shaft 30 .

The male thread 102 rotates coaxially with the output shaft 30 . The male screw 102 is connected to the drive shaft 33a of the drive pulley 33 so as to be rotatable around the drive shaft 33a. The male thread 102 is provided coaxially with the drive shaft 33a. A threaded portion 102 a that meshes with the female thread 101 is provided on the outer periphery of the male thread 102 .

The transmission member 103 converts the force when the internal thread 101 moves in the axial direction along the output shaft 30 into a rotational force about the output shaft 30 and transmits the force to the rod 62 . Transmission member 103 is coupled to female thread 101 so as to be rotatable relative to female thread 101 about output shaft 30 . The transmission member 103 includes a transmission portion main body 103a extending axially along the output shaft 30, and a transmission arm 103b extending radially outward (outward in a direction perpendicular to the axial direction) from the transmission portion main body 103a.

The transmission main body 103 a is arranged between the speed reducer 31 and the drive pulley 33 in the axial direction along the output shaft 30 . The transmission portion main body 103 a is arranged to be spaced apart from each of the speed reducer 31 and the drive pulley 33 in the axial direction along the output shaft 30 . The transmission portion main body 103 a is formed in a tubular shape having an inner diameter larger than the outer diameter of the flange 104 b of the boss 104 .

The transmission arm 103b extends radially outward from the -Y side of the transmission main body 103a. In the state shown in FIG. 6, the transmission arm 103b extends from the +Z side of the transmission portion main body 103a so as to be positioned on the +X side as it goes toward the +Z side. A −Y side portion of a transmission shaft 106 extending in the Y direction is connected to the distal end portion of the transmission arm 103b (the portion farthest away from the transmission portion main body 103a in the radial direction).

As shown in FIG. 7, the transmission member 103 has an opening 103c extending obliquely with respect to the axial direction along the output shaft 30. As shown in FIG. The opening 103c is a through hole that opens in the transmitting portion main body 103a in the radial direction (direction perpendicular to the axial direction). In the state shown in FIG. 7, the opening 103c extends so as to be positioned on the -X side along the outer periphery of the transmission portion main body 103a as it extends from the vicinity of the +Y end of the transmission portion main body 103a toward the -Y side while being inclined (curved). .

As shown in FIG. 5 , the transmission mechanism 100 includes a fixed pin 107 that is immovably fixed to the slide base 4 . The fixed pin 107 extends in the Z direction. A +Y side portion of a stay 110 extending in the Y direction is connected to the slide base 4 . A lower portion of the fixed pin 107 is connected to the −Y side portion of the stay 110 . As shown in FIG. 7, the upper portion of the fixing pin 107 is fitted into the opening 103c of the transmission member 103. As shown in FIG.

As shown in FIG. 6, the transmission member 103 is coupled to the female thread 101 via a bearing 108 so as to be relatively rotatable with respect to the female thread 101 . The bearing 108 is provided between the outer circumference of the internal thread 101 and the inner circumference of the transmission portion main body 103a. The internal thread 101 includes a pressing portion 101b that presses against the bearing 108 as it advances axially along the output shaft 30 . Here, "advancing in the axial direction along the output shaft 30" means movement of the internal thread 101 toward the drive pulley 33 in the axial direction along the output shaft 30 (movement toward the +Y side in this embodiment).

The pressing portion 101b protrudes radially outward (outward in a direction orthogonal to the axial direction) from the -Y end of the female thread 101. As shown in FIG. The pressing portion 101 b has the same outer diameter as the flange 104 b of the boss 104 . In the state of FIG. 6, the -Y side of the pressing portion 101b is in contact with the +Y side of the flange 104b.

Both ends of the rod 62 in the front-rear direction are connected to the transmission shaft 106 of the transmission member 103 and the arm shaft 65 (see FIG. 2) of the arm 61 . The rod 62 extends linearly across the transmission shaft 106 and the arm shaft 65 . The −X end of the rod 62 is rotatable around the transmission shaft 106. As shown in FIG. The +X end of the rod 62 is rotatable around the arm shaft 65 . For example, the rod 62 may be provided with an adjusting member that can adjust the distance between the transmission shaft 106 and the arm shaft 65 .

The rod 62 preferably has a rigidity sufficient to transmit the rotational force of one of the transmission member 103 or the arm to the other. For example, the rod 62 may be a metal shaft member. For example, rod 62 is ideally a member that can be considered a rigid body. It should be noted that the rod 62 may be a member that deforms to some extent when a certain amount of force is applied instead of a member that does not deform under any force.

FIG. 8 is a perspective view including a cross section of the rod 62 of the first embodiment.
As shown in FIG. 8, the rod 62 includes a cylinder 120 connected to the latch 9 (see FIG. 2) via the arm shaft 65 and the like, and a piston 121 connected to the transmission member 103 (see FIG. 6). Prepare. The piston 121 is connected to a spring pin 122 (an example of an elastic member) that applies elastic force to the piston 121 . A lid member 123 is attached to a portion of the cylinder 120 into which the piston 121 is inserted.

Cylinder 120 is formed in a cylindrical shape along the longitudinal direction of rod 62 . The lid member 123 has a convex portion (hereinafter also referred to as “cylinder-side convex portion 123a”) that protrudes radially inward (inward in a direction perpendicular to the longitudinal direction of the rod 62) along the inner circumference of the cylinder 120. As shown in FIG.

Piston 121 extends along the longitudinal direction of rod 62 . The piston 121 has a projection (hereinafter referred to as a "piston-side projection") projecting radially outward (outward in a direction perpendicular to the longitudinal direction of the rod 62) from the outer circumference of the tip of the piston 121 (the portion closest to the bottom 120a of the cylinder 120). ). The piston-side protrusion 121 a is arranged inside the cylinder 120 .

A tip of the piston 121 is connected to the cylinder 120 via a spring pin 122 . In the state shown in FIG. 8, the piston-side projection 121a is spaced apart from the bottom 120a of the cylinder 120 and the cylinder-side projection 123a in the longitudinal direction of the rod 62 .

FIG. 9 is a perspective view for explaining the operation of the transmission mechanism of the first embodiment; FIG. 10 is another perspective view for explaining the operation of the transmission mechanism of the first embodiment; 9 and 10 show the state in which the door is locked in the fully closed position.

As shown in FIG. 9, the pressing portion 101b of the female screw 101 is in contact with the flange 104b of the boss 104 when the door is in the fully closed position. When the output shaft 30 rotates in the fully closed position of the door, the internal thread 101 rotates via the boss 104 . The female thread 101 receives the rotational force output by the output shaft 30 and moves to the +Y side (an example of forward movement) while meshing with the male thread 102 . When the female screw 101 moves to the +Y side, the male screw 102 and the drive pulley 33 do not rotate because the door is locked.

In the present embodiment, the female screw 101 moves to the +Y side, pushes the transmission member 103, and the transmission member 103 rotates with respect to the female screw 101, so that the force when the female screw 101 moves to the +Y side is applied to the output shaft 30. is converted into a force in the direction of rotation about .

Specifically, when the internal thread 101 moves to the +Y side, the transmission member 103 moves to the +Y side via the bearing 108 . In this embodiment, as shown in FIG. 10, the transmission member 103 has an opening 103c extending obliquely with respect to the axial direction of the output shaft 30, and the fixing pin 107 is fitted in the opening 103c. is moved to the +Y side, the transmission member 103 rotates by a predetermined angle. Here, the “predetermined angle” means an angle determined by the degree of inclination of the opening 103 c of the transmission member 103 with respect to the axial direction of the output shaft 30 . For example, the predetermined angle is set to an angle that allows the rotation of the transmission member 103 to unlock the latch 9 (see FIG. 2). In the example of FIG. 10, the transmission member 103 rotates clockwise (in the direction of arrow R1 in FIG. 10) as viewed from the +Y side due to the movement of the internal thread 101 (see FIG. 9) to the +Y side.

In the fully closed position of the door, the transmission member 103 receives the rotational force that rotates the output shaft 30, and when the female screw 101 and the male screw 102 move while meshing with each other, the force that moves the female screw 101 to the +Y side (advance force) is transmitted to the rod 62 to actuate the latch 9 . In this embodiment, as shown in FIG. 8, the piston 121 moves against the elastic force of the spring pin 122 and hits the cylinder 120, and the cylinder 120 moves integrally with the piston 121 more than a predetermined amount, thereby locking the door. is released.

Specifically, as shown in FIG. 10, when the transmission member 103 rotates in the direction of the arrow R1, the rod 62 is pulled in the direction of the arrow M1 via the transmission arm 103b and the transmission shaft 106. As shown in FIG. In this embodiment, as shown in FIG. 8, the rod 62 includes a cylinder 120 connected to the latch 9 (see FIG. 2) and a piston 121 connected to the transmission member 103 (see FIG. 10). Since it is connected to the spring pin 122, when the rod 62 is pulled in the direction of arrow M1 in FIG. 10, the piston 121 moves in the direction of arrow M2 in FIG. When the piston 121 moves against the elastic force of the spring pin 122 and hits the cylinder 120 via the lid member 123, the cylinder 120 moves integrally with the piston 121 in the direction of arrow M2 in FIG. When the cylinder 120 moves integrally with the piston 121, the arm 61 (see FIG. 4) is pulled as described above to unlock the latch 9, thereby unlocking the door.

As shown in FIG. 8, since the piston-side protrusion 121a is spaced apart from the cylinder-side protrusion 123a in the longitudinal direction of the rod 62, this space corresponds to the arrow M2 in FIG. This provides a margin for movement in the direction, and prevents the door from being unlocked carelessly.

In addition, since the piston-side convex portion 121a is spaced from the bottom portion 120a of the cylinder 120 in the longitudinal direction of the rod 62, when the door is unlocked by an emergency unlocking device (not shown), The piston 121 does not move, and the cylinder 120 moves in the direction of arrow M2 in FIG. By moving the cylinder 120 in the direction of arrow M2 in FIG. 8, the latch 9 is unlocked and the door is unlocked. The distance between the piston-side projection 121a and the bottom 120a of the cylinder 120 in the longitudinal direction of the rod 62 is larger than the unlocking amount of the door. Movement is not hindered.

As shown in FIG. 9, after the door is unlocked by the latch 9, the transmission mechanism 100 transmits the rotation of the output shaft 30 to the drive shaft 33a via the female screw 101 and the male screw 102 to open the door. Let In this embodiment, after the door is unlocked, the rotation of the output shaft 30 is transmitted to the drive shaft 33a via the female screw 101 and the male screw 102 when the female screw 101 hits the drive pulley 33 and becomes unable to move forward. Then, the rotation of the drive shaft 33a is transmitted to the belt 32 to open the door.

As described above, when the door is unlocked, the male thread 102 and drive pulley 33 are rotatable. The female screw 101 receives the rotational force output by the output shaft 30, and when it moves to the +Y side while meshing with the male screw 102, it hits the drive pulley 33 (a state in which the female screw 101 is positioned indicated by the two-dot chain line in FIG. 9). . When the internal thread 101 hits the drive pulley 33, it becomes unable to move to the +Y side. Then, the rotational force output by the output shaft 30 is transmitted to the drive shaft 33a via the female thread 101 and the male thread 102. As shown in FIG. The rotation of the drive shaft 33a is transmitted to the belt 32 to open the door.

Next, a description will be given of the operation of closing the door from the unlocked state of the door at the fully open position. The movement when the door is closed is opposite to the movement when the door is opened.
In this embodiment, the direction of rotation of the output shaft 30 is opposite to that during the door opening operation, and when the female screw 101 moves in the direction opposite to the direction of forward movement and hits the speed reducer 31, the output shaft 30 is rotated. When the rotation in the opposite direction is transmitted to the drive shaft 33a via the female thread 101 and the male thread 102, the rotation of the drive shaft 33a in the direction opposite to that during the door opening operation is transmitted to the belt 32, whereby the door is opened. is closed.

Specifically, as shown in FIG. 9, in the fully open position of the door, the +Y end of the internal thread 101 is in contact with the driving pulley 33 (the state where the internal thread 101 is positioned indicated by the two-dot chain line in FIG. 9). When the output shaft 30 rotates in the door-opening position at the door-open position, the female screw 101 rotates through the boss 104 . The female thread 101 receives the rotational force output by the output shaft 30 and moves in the -Y direction (an example opposite to the forward movement direction) while meshing with the male thread 102 .

The female thread 101 receives the rotational force output by the output shaft 30 and moves to the -Y side while meshing with the male thread 102 , and hits the speed reducer 31 via the boss 104 . When the internal thread 101 hits the speed reducer 31, it cannot move to the -Y side (the state where the internal thread 101 is positioned indicated by the solid line in FIG. 9). Then, the rotational force output by the output shaft 30 is transmitted to the drive shaft 33a via the female thread 101 and the male thread 102. As shown in FIG. Then, the rotation of the drive shaft 33a in the direction opposite to the direction in which the door is opened is transmitted to the belt 32, thereby closing the door.

As described above, the door opening/closing device 1 according to the present embodiment includes the speed reducer 31 having the output shaft 30 that outputs the torque transmitted from the drive source 6, and the door 2 that receives the torque of the output shaft 30. a drive pulley 33 having a drive shaft 33a (rotating shaft) for opening and closing the door 2; a rod 62 connected to the latch 9 for unlocking the door 2; and a transmissible transmission mechanism 100 . The transmission mechanism 100 is rotatable about the output shaft 30, and includes a female thread 101 (one screw member) connected to the output shaft 30 so as to be movable in the axial direction along the output shaft 30, and a drive shaft 33a. The male screw 102 (the other screw member) is rotatably connected to the drive shaft 33a as a screw member, and when the door 2 is in the fully closed position, the female screw 101 and the male screw 102 are engaged with each other by receiving the rotational force output by the output shaft 30. and a transmission member 103 for transmitting the advancing force of the internal thread 101 to the rod 62 to actuate the latch 9 when moving while moving. After the door 2 is unlocked by the latch 9, the transmission mechanism 100 opens the door 2 by transmitting the rotation of the output shaft 30 to the drive shaft 33a via the female screw 101 and the male screw 102. The transmission member 103 converts the force generated when the internal thread 101 moves in the axial direction into a rotational force about the output shaft 30 and transmits the force to the rod 62 . The transmission mechanism 100 includes a fixed pin 107 that is immovably fixed. Transmission member 103 is coupled to female thread 101 so as to be rotatable relative to female thread 101 about output shaft 30 . The transmission member 103 has an opening 103c extending obliquely with respect to the axial direction. The fixing pin 107 is fitted in the opening 103c. Female screw 101 advances in the axial direction and pushes transmission member 103 , and transmission member 103 rotates relative to female screw 101 . Convert to directional force. Transmission member 103 is coupled to female thread 101 via bearing 108 so as to be relatively rotatable with respect to female thread 101 . The internal thread 101 has a pressing portion 101b that presses the bearing 108 when advancing axially. The rotating shaft 33a is a driving shaft 33a of a driving pulley 33 that drives a belt 32 for opening and closing the door 2. As shown in FIG. After the door 2 is unlocked, when the female screw 101 hits the drive pulley 33 and cannot move forward, the rotation of the output shaft 30 is transmitted to the drive shaft 33a via the female screw 101 and the male screw 102, thereby The rotation of the belt 33a is transmitted to the belt 32 to open the door 2. As shown in FIG. The rod 62 has a cylinder 120 connected to the latch 9 and a piston 121 connected to the transmission member 103 . The piston 121 is connected to a spring pin 122 that applies an elastic force to the piston 121. The piston 121 moves against the elastic force and hits the cylinder 120. When the cylinder 120 moves together with the piston 121 more than a predetermined amount, the door is opened. 2 is unlocked. When the output shaft 30 rotates in the direction opposite to the direction in which the door 2 is opened, and the female screw 101 moves in the opposite direction to the forward movement and hits the speed reducer 31, the output shaft 30 rotates in the opposite direction. is transmitted to the drive shaft 33a via the female screw 101 and the male screw 102, and the rotation of the drive shaft 33a in the opposite direction to the opening operation of the door 2 is transmitted to the belt 32, thereby closing the door 2. is operated. The drive shaft 33a rotates coaxially with the output shaft 30, one screw member is a female screw 101 that rotates coaxially with the output shaft 30, and the other screw member is a male screw 102 that rotates coaxially with the output shaft 30. be.

According to this configuration, the forward force of the female screw 101 is transmitted to the latch 9 via the transmission member 103 and the rod 62 to unlock the door 2, and after the door 2 is unlocked by the latch 9, the output Since the door 2 can be opened by transmitting the rotation of the shaft 30 to the drive shaft 33a via the female screw 101 and the male screw 102, the drive source 6 does not require any special device. Therefore, the degree of freedom of selection and the degree of freedom of arrangement of the drive source 6 can be increased.
In addition, the transmission member 103 converts the force when the internal thread 101 moves in the axial direction into a force in the rotational direction about the output shaft 30 and transmits it to the rod 62, so that the internal thread 101 simply moves in the axial direction. As compared with the case where the force is transmitted to the rod 62 when moving to the left, the degree of freedom in arranging each part can be increased.
Additionally, the transmission mechanism 100 comprises a fixed pin 107 that is immovably fixed. Transmission member 103 is coupled to female thread 101 so as to be rotatable relative to female thread 101 about output shaft 30 . The transmission member 103 has an opening 103c extending obliquely with respect to the axial direction. The fixing pin 107 is fitted in the opening 103c. Female screw 101 advances in the axial direction and pushes transmission member 103 , and transmission member 103 rotates relative to female screw 101 . Convert to directional force.
For example, if a power conversion mechanism having a plurality of gear trains is provided and the force moving in the axial direction along the output shaft 30 is converted into the force in the rotational direction, there is a possibility that the configuration will become complicated due to an increase in the number of parts. . In contrast, according to this configuration, the transmission mechanism 100 can be realized with a simple configuration including the transmission member 103 having the opening 103 c and the fixing pin 107 .
In addition, transmission member 103 is coupled to female thread 101 via bearing 108 so as to be relatively rotatable with respect to female thread 101 . The internal thread 101 has a pressing portion 101b that presses the bearing 108 when advancing axially.
For example, if the internal thread 101 and the transmission member 103 are in direct contact with each other, an increase in friction between the internal thread 101 and the transmission member 103 may slow the rotation of the transmission member 103 . In contrast, according to this configuration, the pressing portion 101b presses the bearing 108 when the internal thread 101 advances in the axial direction, so that the transmission member 103 can rotate smoothly.
In addition, the rotating shaft 33a is the driving shaft 33a of the driving pulley 33 that drives the belt 32 for opening and closing the door 2. As shown in FIG. After the door 2 is unlocked, when the female screw 101 hits the drive pulley 33 and cannot move forward, the rotation of the output shaft 30 is transmitted to the drive shaft 33a via the female screw 101 and the male screw 102, thereby The rotation of the belt 33a is transmitted to the belt 32 to open the door 2. As shown in FIG.
According to this configuration, the opening operation of the door 2 can be realized with a simpler configuration than in the case where a power conversion mechanism having a plurality of gear trains is provided in the belt-driven type.
Additionally, the rod 62 comprises a cylinder 120 connected to the latch 9 and a piston 121 connected to the transmission member 103 . The piston 121 is connected to a spring pin 122 that applies an elastic force to the piston 121. The piston 121 moves against the elastic force and hits the cylinder 120. When the cylinder 120 moves together with the piston 121 more than a predetermined amount, the door is opened. 2 is unlocked.
According to this configuration, the door 2 can be unlocked by moving the cylinder 120 integrally with the piston 121 against the elastic force of the spring pin 122 by a predetermined amount or more. For example, the piston 121 can be manually pulled to unlock manually without moving the transmission mechanism 100 .
In addition, the rotational direction of the output shaft 30 is opposite to that during the opening operation of the door 2, and when the female screw 101 moves in the direction opposite to the forward movement and hits the speed reducer 31, the output shaft 30 rotates in the opposite direction. The rotation of the direction is transmitted to the drive shaft 33a via the female thread 101 and the male thread 102, and the rotation of the drive shaft 33a in the direction opposite to the opening operation of the door 2 is transmitted to the belt 32, whereby the door is opened. 2 is closed.
According to this configuration, the closing operation of the door 2 can be achieved with a simpler configuration than in the case of a belt-driven type in which a power conversion mechanism having a plurality of gear trains is provided.
In addition, the drive shaft 33a rotates coaxially with the output shaft 30, one screw member is the internal thread 101 that rotates coaxially with the output shaft 30, and the other screw member rotates coaxially with the output shaft 30. It is the male thread 102 . According to this configuration, compared with the case where one threaded member is a male thread and the other threaded member is a female thread, less ingenuity of the drive shaft 33a is required. ), the transmission mechanism 100 can be realized with a simple configuration.

<Second embodiment>
FIG. 11 is a perspective view of the transmission mechanism 200 of the second embodiment, including a cross section taken along the XY plane. FIG. 12 is a perspective view of the periphery including the fixing pin 107 of the second embodiment.
In the above-described first embodiment, an example in which the transmission shaft 106 of the transmission member 103 is connected to the rod 62 (see FIG. 9) has been described, but the present invention is not limited to this. For example, as shown in FIG. 11, transmission shaft 106 of transmission member 103 may be connected to rod 62 via link mechanism 230 . In FIGS. 11 and 12, the same reference numerals are assigned to the same configurations as in the first embodiment, and detailed description thereof will be omitted.

As shown in FIG. 11 , the transmission mechanism 200 includes a link mechanism 230 that connects the transmission shaft 106 of the transmission member 103 and the rod 62 . The link mechanism 230 has a link shaft 231 and a link member 232 .

Both ends of the link shaft 231 in the front-rear direction are connected to the transmission shaft 106 of the transmission member 103 and the first link shaft 233 of the link member 232 . The link shaft 231 extends linearly across the transmission shaft 106 and the first link shaft 233 . The −X end of the link shaft 231 is rotatable around the transmission shaft 106 . The +X end of the link shaft 231 is rotatable around the first link shaft 233 . For example, the link shaft 231 may be provided with an adjusting member that can adjust the distance between the transmission shaft 106 and the first link shaft 233 .

The link member 232 is formed in a V shape when viewed from the Z direction. The link member 232 is rotatable around a fixed shaft 235 extending in the Z direction. A lower portion of the fixed shaft 235 is fixed to a bracket 240 connected to the slide base 4 . The link member 232 has a first link shaft 233 and a second link shaft 234 that are spaced from the fixed shaft 235 and extend in the Z direction parallel to the fixed shaft 235 . The first link shaft 233 and the second link shaft 234 are arranged at different positions in the circumferential direction around the fixed shaft 235 .

Both ends of the rod 62 in the front-rear direction are connected to the second link shaft 234 of the link member 232 and the arm shaft 65 of the arm 61 . The −X end of the rod 62 is rotatable around the second link shaft 234 as the center of rotation. The +X end of the rod 62 is rotatable around the arm shaft 65 .

As shown in FIG. 12, the transmission member 103 has an opening 103c extending obliquely with respect to the axial direction of the output shaft 30, and the fixing pin 107 is fitted in the opening 103c. The movement causes the transmission member 103 to rotate by a predetermined angle. When the transmission member 103 rotates in the direction of arrow R1 in FIG. 12, the link shaft 231 is pulled in the direction of arrow M21 in FIG. Then, the rotational force of the link shaft 231 is transmitted to the link member 232 via the first link shaft 233, and the link member 232 rotates about the fixed shaft 235 in the direction of arrow R21 in FIG. Then, the rod 62 is pulled through the second link shaft 234 in the direction of arrow M22 in FIG. When the rod 62 is pulled in the direction of the arrow M22 in FIG. 12, the arm 61 is pulled as described above and the latch 9 is unlocked, thereby unlocking the door 2 . After the door 2 is unlocked, the door 2 is opened as described above. It should be noted that the movement when the door 2 is closed is opposite to the movement when the door 2 is opened.

The technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

In the above-described embodiment, the transmission member converts the force generated when the internal thread moves in the axial direction into the force in the direction of rotation about the output shaft and transmits the force to the rod. Not exclusively. For example, the transmission member may simply transmit the force to the rod as the internal thread moves axially. For example, the mode of transmitting the force of the transmission member can be changed according to required specifications.

In the above-described embodiments, the transmission mechanism comprises a fixing pin that is immovably fixed, the transmission member is connected to the female thread so as to be rotatable relative to the female thread about the output shaft, and the transmission member is , has an opening extending obliquely with respect to the axial direction, the fixing pin is fitted in the opening, the internal thread advances in the axial direction to push the transmission member, and the transmission member rotates with respect to the internal thread. , the example in which the force when the internal thread moves in the axial direction is converted into the force in the direction of rotation about the output shaft has been described, but the present invention is not limited to this. For example, the transmission mechanism may not have fixed pins. For example, the transmission mechanism may include a fixing member having a fixing hole provided at a fixed position, and the transmission member may have a protrusion that fits into the fixing hole. For example, a power conversion mechanism having a plurality of gear trains may be provided to convert the force moving in the axial direction along the output shaft into the force in the rotational direction. For example, the configuration of the transmission mechanism can be changed according to required specifications.

In the above-described embodiments, the transmission member is connected to the female thread via the bearing so as to be relatively rotatable with respect to the female thread, and the female thread includes a pressing portion that presses the bearing when advancing in the axial direction. has been described above, but the present invention is not limited to this. For example, the transmission member may be in direct contact with the internal thread without bearings. For example, the internal thread may have a pressing portion that presses the transmission member without bearings when advancing axially. For example, the connection mode of the transmission member and the internal thread can be changed according to the required specifications.

In the above-described embodiment, the rotation shaft is the drive shaft of the drive pulley that drives the belt for opening and closing the door. An example has been described in which the rotation of the shaft is transmitted to the drive shaft via the female and male threads, and the rotation of the drive shaft is transmitted to the belt to open the door. do not have. For example, a power conversion mechanism having a plurality of gear trains may be provided, and the rotation of the drive shaft may be transmitted to the belt via the gear trains. For example, if the door drive method is not the belt drive type described above but a screw type (a method in which a screw shaft corresponding to a bolt is rotated by a motor to open and close a door attached to a ball nut corresponding to a nut), The rotating shaft may be a screw shaft. For example, if the drive system of the door is a rack and pinion system (a system in which the pinion of the rack and pinion mechanism is rotated by a motor to open and close the door attached to the rack rail), the rotating body having the rotating shaft is It may be a pinion. For example, the aspect of the rotating shaft and the rotating body can be changed according to the drive method of the door and the required specifications.

In the above-described embodiment, the rod (an example of the connecting member) includes a cylinder connected to the unlocking portion and a piston connected to the transmission member. example), the piston moves against the elastic force and hits the cylinder, and the cylinder moves together with the piston more than a predetermined amount, thereby unlocking the door. is not limited to For example, the rod may not have a cylinder and a piston. For example, the connecting member need not be a rod. For example, the connecting member may be a wire, sprocket, or shaft. For example, the piston may not be connected to the spring pin. For example, the piston may be connected to other elastic members such as coil springs, leaf springs, or torsion springs. For example, the configuration of the connecting member can be changed according to the required specifications.

In the above-described embodiment, the output shaft rotates in the direction opposite to the door opening operation, and when the female screw moves in the opposite direction to the forward movement and hits the speed reducer, the output shaft rotates in the opposite direction. Rotation is transmitted to the drive shaft via the female and male threads, and the rotation of the drive shaft in the opposite direction to the door opening operation is transmitted to the belt, thereby closing the door. However, it is not limited to this. For example, a power conversion mechanism having a plurality of gear trains may be provided, and the rotation of the drive shaft in the direction opposite to that during the door opening operation may be transmitted to the belt via the gear trains. For example, the mode of transmitting the rotation of the output shaft to the drive shaft can be changed according to the required specifications.

In the above-described embodiment, one screw member is a female screw and the other screw member is a male screw. For example, one threaded member may be externally threaded and the other threaded member may be internally threaded. For example, the configuration of the transmission mechanism can be changed according to required specifications.

In the above-described embodiment, the drive shaft rotates coaxially with the output shaft, one threaded member is a female thread that rotates coaxially with the output shaft, and the other threaded member is a male thread that rotates coaxially with the output shaft. Although a certain example was given and demonstrated, it is not restricted to this. For example, the drive shaft rotates on a different axis than the output shaft, one threaded member is a female thread that rotates coaxially with the output shaft, and the other threaded member is a male thread that rotates on a different axis than the output shaft. There may be. For example, as shown in FIG. 13, the output shaft 330 of the reduction gear 331 and the rotation shaft 333a of the drive pulley 333 may be provided on different axes. For example, the rotating shaft 333 a may rotate on an axis parallel to the output shaft 330 . For example, output-side teeth 330b provided on the outer circumference of the output shaft 330 and rotation-side teeth 333b provided on the outer circumference of the rotating shaft 333a may be provided so as to mesh with each other. For example, a plurality of output-side teeth 330b (three in the example of FIG. 13) may be provided along the output shaft 330 at intervals. For example, a plurality of rotating side teeth 333b (three in the example of FIG. 13) may be provided at intervals along the rotating shaft 333a. For example, the layout of the output shaft and rotary shaft can be changed according to the required specifications.

In the above-described embodiment, an example in which the output shaft is the output shaft of the speed reducer has been described, but the present invention is not limited to this. For example, the output shaft may be the output shaft of a motor. That is, the driving body having the output shaft is not limited to the speed reducer, and may be a motor. For example, the aspect of the drive with the output shaft can be changed according to the required specifications. For example, the unlocking unit is not limited to a latch, and may be another mechanism or member for unlocking the door.
For example, a door opening/closing device includes a driving body having an output shaft for outputting a rotational force transmitted from a driving source, a rotating body having a rotating shaft for receiving the rotational force of the output shaft and opening and closing a door, and a door. and a transmission mechanism capable of transmitting the output of the output shaft to the coupling member and the rotating body, wherein the transmission mechanism is rotatable about the output shaft. In addition, one of the male or female threaded screw member connected to the output shaft so as to be axially movable along the output shaft, and the other of the female or male threaded screw member connected to the rotating shaft so as to be rotatable about the rotating shaft In the fully closed position of the door, when one screw member and the other screw member move while receiving the rotational force output by the output shaft, the connecting member absorbs the forward force of one of the screw members. and a transmission member for operating the unlocking part by transmitting the rotation of the output shaft to the one screw member and the other screw member after the door is unlocked by the unlocking part. The opening operation of the door may be performed by transmitting the force to the rotating shaft through the door.
According to this configuration, the forward force of one of the screw members is transmitted to the unlocking portion via the transmitting member and the connecting member to unlock the door, and after the door is unlocked by the unlocking portion. Since the door can be opened by transmitting the rotation of the output shaft to the rotating shaft via one screw member and the other screw member, no special device is required for the drive source. Therefore, it is possible to increase the degree of freedom in selecting and arranging the drive source.

In the above-described embodiment, an example in which the internal thread on the side of the speed reducer can move forward has been described, but the present invention is not limited to this. For example, the internal thread on the drive pulley side may be forward movable.
For example, a door opening/closing device includes a driving body having an output shaft for outputting a rotational force transmitted from a driving source, a rotating body having a rotating shaft for receiving the rotational force of the output shaft and opening and closing a door, and a door. and a transmission mechanism capable of transmitting the output of the output shaft to the coupling member and the rotating body, wherein the transmission mechanism is rotatable about the output shaft. One of the male or female threaded member connected to the shaft, and the other of the female or male threaded member connected to the rotating shaft so as to be rotatable about the rotation axis and move axially along the rotation axis. In the fully closed position of the door, when the one screw member and the other screw member move while receiving the rotational force output by the output shaft, the connecting member absorbs the forward force of the other screw member. and a transmission member for operating the unlocking part by transmitting the rotation of the output shaft to the one screw member and the other screw member after the door is unlocked by the unlocking part. The opening operation of the door may be performed by transmitting the force to the rotating shaft through the door.
According to this configuration, the forward force of the other screw member is transmitted to the unlocking portion via the transmitting member and the connecting member to unlock the door, and after the door is unlocked by the unlocking portion. Since the door can be opened by transmitting the rotation of the output shaft to the rotating shaft via one screw member and the other screw member, no special device is required for the drive source. Therefore, it is possible to increase the degree of freedom in selecting and arranging the drive source.

In the above-described embodiment, an example in which the door opening/closing device is provided with a pair of doors for opening and closing the entrance/exit of the railway vehicle has been described, but the present invention is not limited to this. For example, the door opening/closing device may be provided in vehicles other than railroad vehicles. For example, the door operator may comprise a single-sliding door.

In addition, it is possible to replace the components in the above-described embodiments with well-known components without departing from the scope of the present invention. Moreover, each modification mentioned above may be combined.
Among the embodiments disclosed in this specification, those composed of a plurality of objects may be integrated, and conversely, those composed of a single object may be divided into a plurality of objects. be able to. Regardless of whether they are integrated or not, it is sufficient that they are constructed so as to achieve the object of the invention.

DESCRIPTION OF SYMBOLS 1... Door opening-and-closing apparatus 2... Door 6... Drive source 9... Latch (unlocking part) 30, 330... Output shaft 31, 331... Reduction gear (driving body) 32... Belt 33, 333... Drive pulley (rotating body) 33a, 333a Drive shaft (rotating shaft) 62 Rod (connecting member) 100, 200 Transmission mechanism 101 Female screw (one of male screw or female screw) 101b Pressing Parts 102... Male thread (other screw member of male thread or female thread), 103... Transmission member, 103c... Opening, 107... Fixing pin, 108... Bearing, 120... Cylinder, 121... Piston, 122... Spring pin (elastic member)

Claims (9)

a driving body having an output shaft for outputting a rotational force transmitted from a driving source;
a rotating body having a rotating shaft for receiving the rotational force of the output shaft to open and close the door;
a connecting member connected to an unlocking portion for unlocking the door;
a transmission mechanism capable of transmitting the output of the output shaft to the connecting member and the rotating body;
The transmission mechanism is
a screw member having either a male thread or a female thread connected to the output shaft so as to be rotatable about the output shaft and movably axially along the output shaft;
a screw member other than the female thread or the male thread connected to the rotating shaft so as to be rotatable around the rotating shaft;
In the fully closed position of the door, the one screw member advances when the one screw member and the other screw member move while being engaged with each other by receiving the rotational force output by the output shaft. to the connecting member to operate the unlocking portion;
with
The transmission mechanism transmits the rotation of the output shaft to the rotation shaft via the one screw member and the other screw member after the door is unlocked by the unlocking unit, thereby moving the door. A door operating device that opens the . 2. The door according to claim 1, wherein the transmission member converts a force generated when the one screw member moves in the axial direction into a force in a direction of rotation about the output shaft and transmits the force to the connecting member. Switchgear. The transmission mechanism further comprises a fixed pin immovably fixed,
The transmission member is coupled to the one screw member so as to be rotatable relative to the one screw member about the output shaft,
The transmission member has an opening extending obliquely with respect to the axial direction,
The fixing pin is fitted in the opening,
When the one screw member advances in the axial direction and pushes the transmission member, and the transmission member rotates with respect to the one screw member, the one screw member moves in the axial direction. The door opening/closing device according to claim 2, wherein a force is converted into a rotational force about the output shaft. the transmission member is connected to the one screw member via a bearing so as to be relatively rotatable with respect to the one screw member;
The door opening/closing device according to any one of claims 1 to 3, wherein the one screw member includes a pressing portion that presses the bearing when moving forward in the axial direction. the rotating shaft is a driving shaft of a driving pulley that drives a belt for opening and closing the door;
After the door is unlocked, when the one screw member hits the drive pulley and cannot move forward, the rotation of the output shaft is transmitted through the one screw member and the other screw member to the drive shaft. 5 . The door opening and closing device according to claim 1 , wherein the rotation of the drive shaft is transmitted to the belt to open the door. 5 . The connecting member is
a cylinder connected to the unlocking portion;
a piston connected to the transmission member;
the piston is connected to an elastic member that applies an elastic force to the piston;
6. The door is unlocked when the piston moves against the elastic force and hits the cylinder, and the cylinder moves together with the piston more than a predetermined amount. The door operator according to 1. the rotating shaft is a driving shaft of a driving pulley that drives a belt for opening and closing the door;
When the rotational direction of the output shaft rotates in a direction opposite to that during the door opening operation, and the one screw member moves in a direction opposite to the forward movement direction and hits the driving body, the output shaft rotates. By transmitting the rotation in the opposite direction to the drive shaft via the one screw member and the other screw member, the rotation of the drive shaft in the direction opposite to the door opening operation is applied to the belt. The door opening/closing device according to any one of claims 1 to 6, wherein the door is closed by being transmitted. The rotating shaft rotates coaxially with the output shaft,
the one screw member is the female screw that rotates coaxially with the output shaft;
The door opening/closing device according to any one of claims 1 to 7, wherein the other screw member is the male screw that rotates coaxially with the output shaft. a driving body having an output shaft for outputting a rotational force transmitted from a driving source;
a rotating body having a rotating shaft for receiving the rotational force of the output shaft to open and close the door;
a connecting member connected to an unlocking portion for unlocking the door;
a transmission mechanism capable of transmitting the output of the output shaft to the connecting member and the rotating body;
The transmission mechanism is
a threaded member with either a male thread or a female thread connected to the output shaft so as to be rotatable about the output shaft;
a screw member other than the female thread or the male thread that is rotatable about the rotating shaft and is connected to the rotating shaft so as to be axially movable along the rotating shaft;
When the door is in the fully closed position, the one screw member and the other screw member move forward while receiving the rotational force output by the output shaft and engaging with each other. to the connecting member to operate the unlocking portion;
with
The transmission mechanism transmits the rotation of the output shaft to the rotation shaft via the one screw member and the other screw member after the door is unlocked by the unlocking unit, thereby moving the door. A door operating device that opens the .

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