JPH0227514B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention allows a door that is to close an opening in a wall to slide freely along the wall surface, and when the opening is closed, one side of the door is stored almost flush with one side of the wall. The present invention relates to an automatic opening/closing device for a sliding door in which sliding and storage of the door is driven by a single prime mover, and is particularly suitable for an opening/closing device for a sliding door for a vehicle.

There are two main types of sliding door opening/closing methods. The first opening/closing method is a simple one-way sliding method along a track laid along a wall or the outside surface of a car body, such as those used in houses and railroad cars. The second method is automobiles,
Particularly used in van-type automobiles, when the door is closed, the outer panel of the door is retracted almost flush with the outer panel of the vehicle body, and when the door is opened, the door is swung outward from the outer panel of the body, and then It is of a type that allows the outside to slide along the outer skin of the body.

In the sliding door of the second type, the first and second guide rails are provided at the top and bottom of the opening of the automobile body, and the door slides outside of the opening at the vertical center of the opening. A third guide rail is attached to each of the outer panels, one end of the guide rail in the sliding direction of the door is curved in an arc shape toward the inside of the automobile body, and a guide device attached to the other end of the door in the sliding direction is By making the guide device slidable on the third guide rail and attached to one end in the sliding direction of the door slidable on the first and second guide rails, and if necessary, the guide device can be slid on the door of the guide device. By making the installation rotatable, when the opening in the car body is closed, the outer panel of the door can be stored in almost the same plane as the outer panel of the body, and when the door is opened, the outer panel of the door can be placed in the same plane as the body. It is swung out so as to float to the outside of the outer panel, and then slid along the surface of the outer panel of the body.

When attempting to automatically open and close such a second type of sliding door using a prime mover, such as an electric motor, the door swings out to the outside of the body and slides along the surface of the body. must be done simultaneously or separately. If these were to be driven by separate prime movers, at least two prime movers would be required, and the timing would need to be adjusted between the outward swinging motion and the sliding movement along the outer surface of the body.

The present invention enables the sliding of the door and the swinging out of the door substantially perpendicular to the sliding direction to be performed separately or by a single prime mover, regardless of the shape of the guide rail or the method of guiding the door along the guide rail of the guide device. An object of the present invention is to provide an automatic opening/closing device that can be operated by synthesis.

The drawings show one embodiment of the present invention, and the sliding door of a van-type vehicle is normally shown in FIGS. 1 and 2.
As shown in the figure, when a door 3 is to close an opening 2 for getting on and off or loading/unloading cargo provided on the side of a car body 1, its outer surface is the outer surface of the body 1 in a position where the opening 2 is closed. body 1 when opening opening 2.
After being swung out to the outside of the outer surface of the body 1, it is slid toward the rear of the automobile parallel to the outer surface of the body 1. For this purpose, the automobile body 1 is provided with first guide rails 4 along the top and bottom edges of the opening 2, respectively.
A second guide rail 5 (FIG. 4) is provided, and a third guide rail 5 (FIG. 4) is provided on the outer panel surface of the body 1 rearward from the opening 2 in the direction of travel of the vehicle at a position corresponding to the vertical center of the opening 2. A guide rail 6 is provided (hereinafter, "front" or "rear" refers to the front or rear with respect to the forward direction of the automobile), and the front end of each of these rails 4, 5, and 6 is curved toward the inside of the body 1. Make it into a tight shape. Guide devices 8, 9, 10 supporting one or more rollers 7, 7 that engage with the guide rails 4, 5, 6, respectively, are placed at the front end of the door 3 at the top position A and the bottom position B. Also, the door 3 is provided on the inner surface of the rear end at the center position C in the vertical direction, and the door 3 is connected to the guide rail 4,
It is configured to slide along lines 5 and 6.
The positions of the first and second guide rails 4 and 5 corresponding to the opening 2 are substantially symmetrical, and their curved shapes are also substantially the same. Also, the weight of the door 3 is determined by the weight of the second guide rail 5 and the third guide rail 6.
It is customary to be supported on the body 1 by.

The present invention provides a sliding door device in which the door is slidable by at least one guide rail as described above, at the rear end of the opening 2 with respect to the direction in which the door 3 slides to close the opening 2. At the lower end position D, a plane that includes the sliding direction of the door 3 and is perpendicular to the outer surface of the body 1 (a plane perpendicular to the plane of the paper in Figure 1)
A rotatable machine casing is provided at an appropriate location on the floor of the body 1, and the machine casing has two large differential gears having a rotation center axis coaxial with the rotation center axis of the machine casing, and the differential gear. A differential gear device consisting of a pinion shaft rotatably supporting a pinion differential gear meshing with a large gear is provided,
The drive shaft of the prime mover attached to the machine casing is rotatably connected to one of the three differential gear shafts and the small differential gear shaft, and the other two are connected to one of them. By rotatably connecting the rotary wheels and fixing the other to a fixed portion of the body 1, and by rotationally engaging a drive wheel rotationally driven by the rotary wheel with a guide member provided on the door, The door is slid along the side surface of the outer plate of the body 1 by the drive torque of the prime mover transmitted to the rotating wheel, and the machine casing, which is rotatably supported by the fixed part, is rotated by the reaction force of the drive torque. At least the door can be moved in a direction perpendicular to the outer panel of the body 1.

FIGS. 3 and 4 show an embodiment of the present invention, with FIG. 3 being a perspective view of the main part thereof, and FIG. 4 being a sectional view thereof.

In this embodiment, the two large differential gears of the differential gear device are rotatably supported on the machine casing, and the gear that is rotatably supported on the machine casing concentrically with the large differential gear is The gear is rotatably connected to the drive shaft of the prime mover, and the gear is fixed or connected to the casing or small gear shaft of the differential gear device so as to rotate together, and one of the large differential gears is driven by the shaft. According to an embodiment of the present invention, the gear is fixed to the fixed portion and the other large differential gear is rotationally connected to the rotary ring.

In the figure, on the upper surface of the floor plate 11 facing the opening 2 of the body 1, there is a substrate 1 formed into a hat-shaped cross section.
A bottomed cylindrical machine casing is attached to the first shaft 15, which is fixed with a pin 14 and whose lower end is inserted into a cylindrical sleeve 13 formed on the base plate 12. The main body 16 is rotatably supported by a boss portion 17 formed at the center of the bottom plate, and a shaft hole 19 formed at the center of a cover plate 18 that covers the top opening of the machine housing main body 16 is A second shaft 20 is rotatably supported on the same axis as the first shaft 15 via a bearing, and a differential gear is provided at the upper end of the first shaft 15 and the lower end of the second shaft 20. The first and second two components constituting the device
Large differential bevel gears 21 and 22 are opposed to each other and are fixed to each other. The bevel gears 24 are meshed with each other, and the small gear shaft 23 is rotatable about the rotation center axis of the large differential bevel gear 22 in a plane perpendicular to the axis. A differential gear device in which three gears (23) rotate differentially is configured.

A bevel gear 25 is rotatably supported on the boss portion 17 about the first shaft 15.
A bevel gear 28 provided on a drive shaft 27 of a motor 26 attached to the machine housing body 16 is meshed with the bevel gear 28.
The rotation of the motor 26 is transmitted. The lower end of a hollow cylindrical support 29 centered on the rotation center axis of the gear 25 is further fixed to the bevel gear 25, and the upper end of the support 29 is provided with a through hole 30.
is formed so that the end portion of the small gear shaft 23 farther from the center of rotation is supported or fixed in the through hole 30. Thus, the rotation of the motor 26 transmitted to the bevel gear 25 is transferred to the pinion shaft 23 via the support 29.
It is converted into a rotation of .

At the upper end of the second shaft 20, a pulley-shaped rotating ring 32 having a belt engaging groove 31 formed on the circumferential surface is attached to the upper end of the second shaft 20.
An arm 33 is integrally formed in a part of the outer wall of the machine housing body 16 in the radial direction, and an arm rod 34 is attached to the free end of the arm 33. The arm rod 34 is rotatably fixed around a short shaft 35 fixedly planted at one end of the arm rod 34, and a cylindrical drive wheel 36 and a cylindrical drive wheel 36 are attached to the short shaft 35 coaxially with the drive wheel 36. A connected driven wheel 37 is rotatably connected to the short shaft 3 via a bearing.
5 as the center of rotation, and the arm rod 34
A roller 39 is rotatably supported at the other end by a shaft 38 parallel to the short shaft 35 via a bearing.

The cylindrical peripheral surface of the drive wheel 36 is formed into a drive surface 41 having a large friction coefficient, or a drive ring 40 made of elastic rubber or the like having a large friction coefficient is fitted. 41 and the roller 39
A distance is maintained between the circumferential surface of the guide member 50 and the engaging edge 51 of the guide member 50, which will be described later. The belt engaging groove 31 of the rotating wheel 32 and the driven wheel 3
An endless belt 42 is stretched between the circumferential surface of 7,
They are rotationally connected.

A linear guide member 50 is attached to the inner surface of the door 3, which is formed from a metal plate and extends over a required length in the width direction of the door 3 along the front-rear direction of the automobile body 1. The guide member 50 is formed with an engaging edge 51 and a mounting edge 52 that are bent so as to extend substantially parallel to each other.
The mounting edge 52 is brought into contact with the door 3 and fixed with a bolt nut, and the engagement edge 51 is connected to the drive surface 41 of the drive wheel 36 and the roller 39. It is placed between and held between the circumferential surface of the

Note that the reference numeral 43 in the figure is a protective cover that covers a portion where the rotary wheel 32 and the driven wheel 37 are rotationally connected by a belt 42.

FIG. 5 is a top view showing the operation of the above embodiment of the present invention, and the operation of the above embodiment will be explained based on FIGS. 4 and 5.

In the embodiment device configured as above,
When the switch of the motor 26 is operated to apply current, the rotation of the drive shaft 27 is caused to rotate through the bevel gears 28, 25 and the support 29 to the pinion shaft 2 of the differential gear system.
3, and the rotation of the pinion shaft 23 is transmitted to the shaft 23.
The signal is transmitted to the two large differential gears 21 and 22 via small differential bevel gears 24 and 24 supported by the two large differential gears 21 and 22, respectively. The driving force of the motor 26 transmitted to the first differential gear 21 is fixed to the first shaft 15 which is fixed to a fixed part, so that the driving force of the motor 26 is transmitted to the first differential gear 21. Rotate it along the arrow F in Fig. 5.
Due to this rotation, a force is applied to the door 3 that moves the outer plate of the body 1 in a substantially perpendicular direction. On the other hand, the second
The driving force of the motor 26 transmitted to the differential large gear 22 is transmitted to the second shaft 20, the rotating wheel 32, and the endless belt 4.
2. The driving wheel 36 is rotationally driven via the driven wheel 37, and the engaging edge 51 of the guide member 50, which is frictionally engaged with the driving surface 41 of the driving wheel 36, is let out in its length direction. Due to this drive, a force is applied to the door 3 to cause it to slide in the front-rear direction along the outer side plate of the body 1.

When the door 3 is in a position where it closes the opening as shown by the solid line in FIG. 2 and the door 3 is to be opened from this position, the motor 26 is rotated in the normal direction. At this time, one end of the guide device 8, 9, 10 of the door 3 is engaged with the curved portion of the guide rail 4, 5, 6, so that resistance is generated to movement of the door 3 parallel to the body outer plate. This resistance is the driving wheel 36 and the rotating wheel 3
This results in resistance to the rotational drive of the second large differential bevel gear 22 of the differential gear device, and for this reason, the first large differential bevel gear 21 It is rotated at a higher speed than the large differential bevel gear 22, and the driving torque of the motor 26 is mainly used to rotate the arm 33 of the machine casing in the direction of arrow F in FIG. As the door 3 approaches the position shown by the dashed dotted line in FIG. 26 causes the door to move in the combined direction of the outward swinging by the rotation of the arm 33 and the sliding parallel to the outer plate by the drive wheel 36, and when the door reaches the position shown by the two-dot chain line in FIG. The rotation of the machine casing is met with great resistance, and the drive torque of the motor 26 is consumed exclusively by the sliding movement of the drive wheel 36 in a direction parallel to the outer panel of the door body. Thus, the switch is opened at the position where the door 3 fully opens the opening 2, or the motor 26 is stopped by the action of the limit switch.

The opening 2 is closed by the door 3 in the opposite manner. That is, when the switch is closed and the motor 26 is rotated in the opposite direction, the door 3 starts sliding and the second
When the position indicated by the two-dot chain line in the figure is reached, resistance is generated in the rotational drive of the drive wheel 36, so the driving force of the motor 26 is distributed to the rotation of the arm 33 of the machine casing in the opposite direction of arrow F, and the door is moved in the combined direction. When the door 3 finally reaches the final position of sliding in the longitudinal direction of the body 1, the driving force of the motor 26 is used only to rotate the arm 33 of the machine casing, and the door 3 is moved in a direction almost perpendicular to the outer panel of the body. is accommodated in the opening 2, and the opening 2 is completely closed. When this state is reached, the motor 26 is turned off by opening the switch or by the action of the limit switch.
to stop.

As is clear from the above description, in the device of this embodiment, the driving torque applied to the small gear shaft 23 of the differential gear device is transmitted to the first and second large differential bevel gears 2.
The driving torque distributed to the first differential large bevel gear 21 rotates the machine casing to swing the door 3 outward, and the driving torque is distributed to the first differential large bevel gear 21. The drive torque distributed to the drive wheels 36 is rotated to cause the door 3 to slide in the direction along the outer panel of the body 1 via the guide member 50 that engages with the drive wheel 36. A single prime mover is used to perform the motion due to the rotation of the machine casing or the rotation of the drive wheels by a single prime mover. When it's big,
Depending on the load, more is automatically distributed to the other side,
It is never wasted.

In the present embodiment, the differential gear device is of a type in which the first and second differential large gears are rotatably supported by their rotating shafts, and the small gear shaft is covered by a casing that supports the small gear shaft at its end. When installing the device inside the machine case, the boss portion 17 and the shaft hole 1
9 rotatably supports the shaft support portion of the large differential gear of the casing, the shaft of the first large differential gear is fixed to the first shaft 14, and the shaft of the second large differential gear rotates. Even if the ring 32 is fixed and the bevel gear of the drive shaft 27 of the motor 26 is meshed with the bevel gear formed integrally with the casing or the bevel gear fixed to the casing, the same operation as in the illustrated case is possible. It's self-evident.

FIG. 6 shows another embodiment of the invention. In this embodiment, two large differential gears of the differential gear device are rotatably supported on the machine casing, and a gear concentrically fixed to one of the large differential gears is mounted on the drive shaft of the prime mover. the other of the large differential gears is rotationally connected to the rotary ring, and the small gear shaft of the differential gear device is rotatably connected to the machine casing and fixed to the fixed part. This embodiment relates to an embodiment of the present invention.

In the figure, parts given the same reference numerals as in FIG. 4 indicate the same parts. The machine casing body 16 is rotatably supported by the first shaft 15 via a bearing through a circular shaft hole 117 bored in the center of the bottom plate, and is connected to the bevel gear 25 and the first differential of the differential gear device. The large bevel gear 21 is fixed concentrically and rotatably supported on the shaft 15 via a bearing, and is meshed with a bevel gear 28 attached to a drive shaft 27 of a motor 26. A small gear shaft 23 of the differential gear device is fixed to the first shaft 15. The rest of the configuration is the same as that shown in FIG.

In the device of this embodiment, the drive torque of the motor 26 is input to the differential gear device via the first differential large bevel gear 21, and the drive torque for rotating the machine casing via the small gear shaft 23. , and the torque for rotationally driving the drive wheels 36 via the second large differential bevel gear 22, and when the load on driving the drive wheels 36 is large, more drive torque is consumed by the rotation of the machine casing. When the load on the rotation of the machine casing becomes large, a large amount of drive torque is consumed by the rotation of the drive wheel 36, and the device operates in the same way as the embodiment shown in FIG.

In addition, in FIG. 6, instead of tightly fitting the drive ring 40 to the circumferential surface of the drive wheel 36, a material such as rubber having a large coefficient of friction is used on the engagement surface of the engagement edge 51 of the guide member 50 with respect to the drive wheel 36. A friction plate 54 made of the following is attached to make strong frictional engagement with the drive wheel 36.

FIG. 7 shows still another embodiment of the present invention. In this embodiment, two large differential gears of the differential gear are rotatably supported by the machine casing, and a gear fixed concentrically to one of the large differential gears is rotated around the drive shaft of the prime mover. the other large differential gear of the differential gear is fixed to the fixed part with its center axis aligned with the rotation center axis of the machine casing, and the small gear shaft of the differential gear This relates to an embodiment of the present invention in which the rotating wheels are rotationally connected.

In the figure, parts shown with the same reference numerals as those shown in FIG. 4 indicate the same parts. In this embodiment, the machine casing body 16 is rotatably supported by the first shaft 15 via a bearing through a circular shaft hole 217 drilled in the center of the bottom plate, and is rotatably supported by the first shaft 15 of the differential gear device. The large differential bevel gear 21 is connected to the shaft 15.
The second large differential bevel gear 22 is concentrically fixed to the
A second shaft 2 has a spur gear 225 fixed concentrically and is disposed on the lid 18 on the same axis as the shaft 15.
The spur gear 225 has a spur gear 22 attached to a drive shaft 227 of a motor 26 attached to the lid body 18.
8 are engaged. Said first and second
A small gear shaft 223 supporting the differential small gear 24 that meshes with the large differential bevel gears 21 and 22 is rotatably supported at the upper end of the first shaft 15 via a pusher at its center of rotation. An annular rotating ring 23 is provided at the end far from the rotation center of the pinion shaft 223.
2 is fixed so as to rotate about the axes of the first and second shafts 15 and 20. Further, the lower end of the first shaft 15 is welded to a mounting plate 49, and the mounting plate 49 is attached to the substrate 12 via bolts and nuts. The rest of the configuration is the same as that shown in FIG.

In the device of this embodiment, the driving torque of the motor 26 is input to the differential gear device through the second differential bevel gear 22 and rotates the machine casing via the first differential bevel gear 21. The driving torque is divided into the driving torque for moving the machine and the torque for rotationally driving the driving wheel 36 via the pinion shaft 223, and when the load on driving the driving wheel 36 is large, more torque is consumed by rotating the machine casing, When the load on the rotation of the machine casing becomes large, a large amount of torque is consumed by the rotational drive of the drive wheel 36, and the same operation as explained with reference to FIGS. 4 and 5 is performed.

FIG. 8 shows a modification of the embodiment shown in FIG. 4. This modification differs only in that the shape of the guide member 50 is changed and the arrangement of the drive wheels 36 and rollers 39 is changed accordingly, and the other configurations are the same as in FIG. 4. That is, in the modification shown in FIG. 8, a short shaft 35 is installed at the tip of an arm 33 that is formed to protrude from the machine housing body 18, and a driven wheel 37 and a driving wheel 36 are coaxially connected to the short shaft 35. At least it is rotatably supported by a bearing, and a roller 39 is attached to the short shaft 35.
The guide member 50 has an engagement edge 51 that engages with the drive surface 41 of the drive wheel 36 as well as an engagement edge 51 of the roller 39 that has an outer diameter smaller than that of the drive wheel 36 and is supported via a bearing. A groove 55 that engages with the peripheral surface is formed parallel to the engagement edge 51 between the attachment edge 52 and the engagement edge 51. With this configuration, the fourth
Due to the simple structure that does not require the illustrated arm rod 34 and shaft 38, the engagement of the roller 39 with the concave strip 55 causes the drive surface 41 of the drive wheel 36 to engage the engagement edge 51 of the guide member 50. Engagement pressure can be ensured.

As described above in detail, the present invention includes a wall having an opening, a door for closing the opening, and at least one guide rail attached along the wall in the opening direction of the door. and a guide device attached to the door and slidable on the guide rail, so that one side of the door is substantially flush with one side of the wall when the door closes the opening. In a sliding door that is stored and guided to slide approximately parallel to a side surface of a wall by the guide device when the door is opened, a guide member is fixed to the other side of the door parallel to the sliding direction of the door, A machine casing is rotatably provided in a part fixed to the wall, and the machine casing has a rotation center axis coaxial with the rotation center axis of the machine casing and facing oppositely to each other. A small gear shaft that rotatably supports two disposed large differential gears and a small differential gear that meshes with these large differential gears, and rotates around a rotation center axis of the large differential gears. A differential gear device is provided, and one of two differential gears and a small gear shaft of the differential gear device is rotatably connected to a drive shaft of a prime mover attached to the machine casing. One of the other two pieces is rotatable with respect to the machine casing and fixed to the fixed part, and a rotating ring is rotatably connected to the other two pieces and fixed to the machine frame. A drive wheel having a cylindrical drive surface formed on its outer peripheral surface and a guide roller provided in parallel or coaxially with the drive wheel are rotatably provided at the free end of the arm, and the drive wheel and the rotation wheel are connected to each other. are rotationally connected, a guide member fixed to the door is engaged with the driving wheel and the circumferential surface of the guide roller, and the door is opened via the guide member by the driving torque of the prime mover transmitted to the driving wheel. The door is slid in a direction along the wall, and the door is moved by the arm in a direction substantially perpendicular to the wall by rotating the machine casing around its rotation center axis by the reaction force of the driving torque. The driving torque of the prime mover is input to one of the two large differential gears and the pinion shaft of the differential gear system, and is divided and distributed to the other two, one of which is applied to the machine casing. When the other rotates the drive wheel, and there is a load that acts as resistance to either the rotation of the machine casing or the rotation of the drive wheel,
Since more drive torque is automatically distributed to the other according to the load, two different movements, one for sliding the door almost parallel to the wall and the other for swinging it out almost perpendicular to the wall, can be performed simply. One prime mover makes it possible to distribute force according to the door guidance situation according to the situation at that time. The above action is achieved regardless of the shape of the guide rail, and due to the existence of a resisting load, the driving torque is not wasted, and the load is appropriately distributed in the two directions of movement. It is extremely excellent.

In addition, since the swinging movement of the door is performed by the rotational movement of the machine casing with the protruding arm, all operations are transmitted through rotation, and there are no linear mechanical sliding parts, so during use. The maintenance and management of the door can be performed extremely easily, and a conventionally known manual sliding door device can be converted to a mechanical opening/closing system using the conventional design.

[Brief explanation of drawings]

Fig. 1 is a side view of a van type vehicle equipped with a sliding door, Fig. 2 is a schematic diagram showing the sliding situation of the guide rail and the door, Fig. 3 is a perspective view of the main part of an embodiment of the present invention, and Fig. 4 is a side view of a van-type vehicle equipped with a sliding door. The figure is a sectional view thereof, and FIG. 5 is a schematic top view showing the operation of the door when it is opened and closed. FIG. 6 and FIG. 7 are sectional views of other embodiments of the present invention, respectively;
FIG. 8 is a sectional view of a modification of FIG. 4. In the figure, 1 is the body, 2 is the opening, 3 is the door,
4, 5, 6 are guide rails, 8, 9, 10 are guide devices, 14 is the first shaft, 16 is the main body of the machine, 18 is its lid, 20 is the second shaft, 21, 22 are differentials. Large gear, 23 is small gear shaft, 24 is differential small gear, 2
5 and 28 are gears, 26 is a motor, 27 is its drive shaft, 32 is a rotating wheel, 33 is an arm of the machine casing, 36 is a drive wheel, 41 is its drive surface, 37 is a passive wheel, 39
4 represents a roller, and 42 represents an endless belt.

Claims (1)

[Scope of Claims] 1. A wall in which an opening is formed, a door to close the opening, at least one guide rail attached to the wall along the opening direction of the door, and a door for closing the opening. a guide device attached to the guide rail and slidable on the guide rail; the guide device is housed so that when the door closes the opening, one side of the door is substantially flush with one side of the wall; In a sliding door that is slid and guided approximately parallel to the side surface of a wall by the guide device when opening, a guide member is fixed to the other side of the door in parallel to the sliding direction of the door, and A machine casing is rotatably provided in a part that is in a fixed relationship with the machine casing, and the machine casing has a rotation center axis coaxial with the rotation center axis of the machine casing, and is arranged so as to be opposed to each other. A differential consisting of two large differential gears and a small gear shaft that rotatably supports a small differential gear that meshes with the large differential gears and rotates around the rotation center axis of the large differential gear. A gear device is provided, and one of two differential gears and a small gear shaft that are concentrically and differentially rotatably related in the differential gear device is attached to the machine casing. One of the other two pieces is rotatably connected to the drive shaft of the prime mover, and one of the other two pieces is fixed to the fixed part concentrically with the rotation center axis of the machine case so as to be rotatable with respect to the machine case. rotatably connects rotating wheels, and the free end of the arm fixed to the machine casing has a drive wheel with a cylindrical drive surface formed on its outer circumferential surface and a guide roller provided in parallel or coaxially with the drive wheel. are rotatably provided, the drive wheel and the rotary wheel are rotatably connected, and a guide member fixed to the door is engaged with the circumferential surfaces of the drive wheel and the guide roller to transmit information to the drive wheel. The drive torque of the prime mover causes the door to slide in the direction along the wall via the guide member, and the reaction force of the drive torque causes the machine casing to rotate around its rotation center axis, so that the door is moved against the wall by the arm. A sliding door opening/closing device characterized in that the sliding door is moved in a substantially vertical direction. 2. Two large differential gears of the differential gear device are rotatably supported on the machine casing, and a gear rotatably supported on the machine casing concentrically with the large differential gear is the differential gear. The fixed part is fixed to or connected to the casing or small gear shaft of the device so as to rotate integrally, and the gear is rotationally connected to the drive shaft of the prime mover, and one of the large differential gears is connected to the fixed part by its central shaft. 2. The sliding door opening/closing device according to claim 1, wherein the other of the large differential gears is rotatably connected to the rotary ring. 3. Two large differential gears of the differential gear device are rotatably supported on the machine casing, and a bevel gear that is rotatably supported on the machine casing concentrically with the large differential gear is a bevel gear of the prime mover. The differential gear device is meshed with a bevel gear attached to a drive shaft, and a hollow inner cylindrical support body having an inner diameter larger than an outer diameter of the large differential gear is fixed to the bevel gear. a small gear shaft is supported, one rotating shaft of the differential large gear is fixed to the fixed part, and a rotating ring is concentrically fixed to the other rotating shaft of the differential large gear. A sliding door opening/closing device according to claim 1 or 2. 4. The differential gear device is covered with a casing that fixes the small gear shaft and rotatably supports the large differential gear, and the casing is rotated around the central axis of rotation of the two large differential gears. A gear rotatably supported by the machine casing and formed or fixed to the casing around its rotation center shaft is meshed with a gear attached to the drive shaft of the prime mover, and one rotation shaft of the large differential gear is connected to the drive shaft of the prime mover. The sliding door opening/closing device according to claim 1 or 2, wherein the rotating ring is fixed to a fixed portion and concentrically fixed to the other rotating shaft of the large differential gear. Device. 5. Two large differential gears of the differential gear device are rotatably supported by the machine casing, and a gear concentrically fixed to one of the large differential gears is rotatably supported on the drive shaft of the prime mover. the other of the large differential gears is rotatably connected to the rotary ring, and the small gear shaft of the differential gear device is rotatably supported by the machine casing, and the rotational center axis thereof is connected to the fixed part. The sliding door opening/closing device according to claim 1, wherein the sliding door opening/closing device is fixed. 6. The machine casing is rotatably supported around a shaft fixed to the fixed part, a bevel gear is fixed concentrically to one of the large differential gears of the differential gear device, and both are fixed around the shaft. The bevel gear is rotatably supported, the bevel gear is meshed with a bevel gear attached to the drive shaft of the prime mover, and the other rotational center shaft of the large differential gear is rotatably supported on the machine casing on the same axis as the shaft. Claim 1, characterized in that the rotary ring is rotatably connected to the rotational center axis thereof, and a small gear shaft of the differential gear device is fixed to the shaft at its rotational center. Or the sliding door opening/closing device according to item 5. 7. Two large differential gears of the differential gear device are rotatably supported by the machine casing, and a gear concentrically fixed to one of the large differential gears is rotatably connected to the drive shaft of the prime mover. and fixing the other rotation center axis of the large differential gear to the fixed part on the rotation center axis of the machine casing, and rotationally connecting the rotating ring to the pinion shaft of the differential gear device. The sliding door device according to claim 1, characterized in that: 8. One of the large differential gears of the differential gear device is rotatably supported on the machine frame, and a gear fixed concentrically to the one large differential gear meshes with a gear attached to the drive shaft of the prime mover. The machine casing is rotatably supported on a shaft installed in the fixed part coaxially with the rotational center axis of the one large differential gear,
The other of the large differential gears is fixed concentrically to the shaft, and the pinion shaft of the differential gear device has its rotation center rotatably supported at the tip of the shaft, and 8. The sliding door device according to claim 1, wherein the rotating ring formed in an annular body is fixed to the outer tip portion so as to be rotatable about the shaft. 9. Two large differential gears of the differential gear device are rotatably supported by their rotating shafts, and the differential gear device is covered with a casing that supports the end of the small gear shaft, and the lower end is connected to the fixed part. The machine casing is rotatably supported by a shaft installed in the machine casing, and the differential gear device is attached to the machine casing by aligning the rotation axis of the differential large gear with the rotational center axis of the machine casing through the casing. the rotating shaft of the one differential large gear is rotationally connected to the drive shaft of the prime mover, the rotating shaft of the other large differential gear is fixed to the shaft, and the rotating shaft of the other large differential gear is fixed to the shaft; A patent claim characterized in that the rotating ring is integrally formed or the annular rotating ring is fixed to a casing of a differential gear device, so that the rotating ring is rotated about a central rotation axis of the casing. The sliding door opening/closing device according to item 1 or 7. 10 The rotating wheel is formed in the shape of a pulley, and a belt is passed between the driving wheel and a pulley formed concentrically to connect the driving wheel rotationally. 1st term, 2nd term,
The sliding door opening/closing device according to any one of Item 5 and Item 7. 11. A patent claim characterized in that the rotating wheel has sprocket teeth formed thereon, and a chain is spanned between the sprocket wheel and the sprocket wheel that is concentrically fixed to the driving wheel, and the sprocket tooth is rotatably connected to the sprocket wheel. The sliding door opening/closing device according to any one of item 1, item 2, item 5, or item 7. 12 The rotating wheel is formed with a gear centered on its rotation center axis, and at least one idle gear is rotatably connected to the machine casing or arm between the gear and the gear concentrically fixed to the drive wheel. The sliding door opening/closing device according to any one of claims 1, 2, 5, and 7, wherein the sliding door opening/closing device is supported by and rotationally connected to the sliding door opening/closing device.