JP5574245B2 - Elevator door opening and closing device - Google Patents

Description

  The present invention relates to an elevator door opening / closing device that opens and closes a car door provided in an elevator car.

  As shown in FIG. 16, the elevator is provided with a hoistway 1 in a building, an entrance 2 is provided at a desired height position of the hoistway 1, a landing 3 is provided facing the entrance 2, A landing door 4 is provided at the entrance 2, and a car 6 is provided in the hoistway 1 so that it can be raised and lowered by a driving device (not shown). The car 6 is also provided with an entrance 7, and the car door is provided at the entrance 7. 8 is provided. The general elevator is provided with an engaging portion 9 on the car door 8 so as to protrude toward the landing door 4, while being engaged with the landing door 4 so as to protrude toward the car door 8. When the car 6 arrives at the position of the landing 3, the engaging portion 9 and the engaged portion 5 are engaged, and the car door 8 is opened and closed by the door opening and closing device provided on the car 6 side. Accordingly, the landing door 4 is also opened and closed together.

  As shown in FIG. 17, this type of door opening and closing device includes a drive motor 30 attached to the upper surface of the upper frame 10 that extends along the opening direction (left and right direction in FIG. 17) of the entrance / exit 7 of the car 6, and the upper frame 10. A speed reduction pulley 32 attached to one end of the front surface of the motor, and a speed reduction pulley 32 having a diameter larger than that of the motor pulley 31 attached to the drive shaft of the drive motor 30, and provided coaxially and integrally with the speed reduction pulley 32. Drive pulley 33, driven pulley 34 attached to the other end of the front face of upper frame 10, speed reduction belt 35 comprising an endless belt wound between motor pulley 31 and speed reduction pulley 32, drive pulley 33 and driven pulley And a drive belt 36 composed of an endless belt wound around 34.

  Further, the door rail 11 is attached to the front surface of the upper frame 10, and the car door 8 has a pair of rollers 13 and 13 attached to the door hanger 12 placed on the door rail 11, thereby allowing the door rail 11 to pass through the door hanger 12. In this state, the car door 8 is coupled to the drive belt 36 of the door opening / closing device via the door hanger 12 and the coupling tool 37 attached to the door hanger 12.

  Accordingly, when the motor pulley 31 is rotated by the drive motor 30, the rotation is transmitted to the speed reduction pulley 32 via the speed reduction belt 35, and the drive pulley 33 is rotated together with the speed reduction pulley 32. The car door 8 reciprocates along the door rail 11 via the tool 37 and the door hanger 12, and the car door 8 is opened and closed. In the elevator shown in FIG. 17, one car door 8 is connected to one side of the drive belt 36 and the other car door 8 is connected to the other side of the drive belt 36. , 8 move in directions opposite to each other. That is, the elevator shown in FIG. 17 is an elevator having a so-called center open type door type in which the doorway 7 of the car 6 opens from the center.

JP 2002-37574 A

  By the way, in the said conventional door opening / closing apparatus, since the drive motor 30 is attached to the upper surface of the upper frame 10, there exists a problem that the height dimension of the cage | basket | car 6 whole becomes large. As a means for solving such a problem, the drive motor 30 is disposed so as not to protrude upward from the upper surface of the upper frame 10. Specifically, the drive motor 30 is attached to the front surface of the upper frame 10 via a bracket, for example. Thus, a method of arranging the drive motor 30 on the front side of the upper frame 10 is extremely effective.

  However, new problems are expected to arise from such methods. It is a problem when removing the drive motor from the upper frame.

  Usually, the bracket extends from the upper frame to the front side. By attaching the drive motor to the extended bracket, the bracket can secure a distance between the drive pulley attached to the drive shaft of the drive motor and the front surface of the upper frame. The drive motor is attached to the upper frame by being attached to one surface of a bracket formed in a flat plate shape (plate-like body) using a bolt.

  Conversely, when the drive motor is removed from the upper frame, the drive motor is removed from the upper frame by removing the bolts connecting the drive motor and the bracket. Or the bolt which connects a bracket and an upper frame is removed, and the drive motor attached to the bracket is removed from the upper frame.

  However, simply removing the bolt that connects the bracket and the drive motor may cause the drive motor to detach from the bracket and fall. Similarly, when the bolt that joins the bracket and the upper frame is simply removed, the drive motor may be detached from the upper frame together with the bracket and fall.

  Therefore, it is conceivable to remove the bolt that connects the drive motor and the bracket while the drive motor is supported so as not to fall. Or it is possible to remove the bolt which connects the bracket and the upper frame in a state where the drive motor is supported so as not to fall. In this case, the worker must support a heavy drive motor with an unreasonable posture, so that the workability of the worker is very poor and there is also a safety problem.

  The present invention has been made in view of such a problem, and provides an elevator door opening and closing device capable of removing a drive motor with good workability and safety.

In order to solve the above-described problems, the present invention provides a car door that can be opened and closed at a car doorway, and a drive motor is connected to the car door via a transmission mechanism. In an elevator door opening and closing device that is attached to an upper frame provided above via a bracket, and the bracket is fixed to the upper frame by a fixing member, the upper frame has a plate shape having an upper surface facing upward. And the bracket is fixed to the upper surface of the plate-like portion of the upper frame by the fixing member, and when the fixing of the bracket by the fixing member is released, the drive motor moves downward from the upper frame. In order to prevent the bracket from falling off, the bracket includes a locking means for locking the bracket to the upper frame. Bracket when moved in the predetermined direction, characterized by comprising configured to release the engagement of the bracket.

  According to this configuration, even when the fixing by the fixing member is released in a state where the drive motor is attached to the upper frame, the bracket is maintained in a state of being locked to the upper frame via the locking means. . Therefore, it is possible to prevent the bracket from being detached from the upper frame, and in turn, it is possible to prevent the drive motor from dropping from the upper frame.

  By moving the bracket in a predetermined direction, the bracket is released from being locked to the upper frame via the locking means. Thereby, the bracket is released from the locking of the locking means, and the drive motor can be removed from the upper frame. Therefore, the drive motor can be removed safely with good workability.

  In the elevator door opening and closing device according to the present invention, the locking means is formed in the bracket and has a groove having a predetermined width and a predetermined length, and is formed in the upper frame corresponding to the groove. A hole, a bolt inserted into the groove and the hole, and a nut screwed into the bolt; and the bolt is inserted into the groove and the hole, and the nut is screwed together. The bracket is locked to the upper frame, the bolt has a diameter smaller than the width of the groove and smaller than the hole, and a shaft into which a nut is screwed, and the shaft And a head larger than the width of the groove and larger than the hole, and the groove is configured to move the bolt when the bracket is moved in a predetermined direction. As the shank is removed from the groove portion can be configured to partially open shape.

  According to such a configuration, the bolt is inserted into the groove portion and the hole portion by the shaft portion having a diameter smaller than the width of the groove portion and smaller than the hole portion and screwed into the nut. The bolt is locked to the surface of the bracket by a head formed at one end of the shaft and larger than the width of the groove and larger than the hole. The bracket is locked to the upper frame by bolts and nuts as locking means by screwing the nut into the shaft portion. Therefore, even if the fixing by the fixing member is released, the drive motor can be prevented from falling off the upper frame.

  When the bracket is moved in a predetermined direction, the bracket is released from being locked to the upper frame via bolts and nuts which are locking means, and the drive motor can be removed from the upper frame. Therefore, the drive motor can be removed safely with good workability.

In the elevator door opening and closing apparatus according to the present invention, a car door is provided at a car doorway so as to be freely opened and closed, and a drive motor is connected to the car door via a transmission mechanism, and the drive motor is connected to a car doorway. In an elevator door opening and closing device that is attached to an upper frame provided above via a bracket and is fixed to the upper frame by a fixing member, when the bracket is fixed by the fixing member, In order to prevent the drive motor from falling off from the upper frame, the bracket includes a locking means for locking the bracket to the upper frame, and the locking means has the bracket moved in a predetermined direction. The bracket is configured to release the locking, and the locking means is formed on the bracket. A groove portion having a predetermined width and a predetermined length, a hole portion formed in the upper frame corresponding to the groove portion, a bolt inserted through the groove portion and the hole portion, and screwed into the bolt. And the bolt is inserted into the groove and the hole, and the nut is screwed together to lock the bracket to the upper frame, and the bolt has a width of the groove. A shaft portion having a diameter smaller than that of the hole portion and screwed into the nut, and formed at one end portion of the shaft portion and larger than the width of the groove portion, and larger than the hole portion. A large head portion, and the groove portion is configured to be partially open so that the shaft portion of the bolt is removed from the groove portion when the bracket is moved in a predetermined direction. Before An opening having a predetermined width larger than that of the drive motor is provided so that the drive motor is disposed through the upper frame. The opening is moved by moving the drive motor upward. The bracket is configured to be open upward so as to be removed from the upper frame, and the bracket is disposed in the opening to determine a mounting position of the drive motor, and a base portion to which the drive motor is attached, and the base portion. An extension portion extending in a predetermined direction, and the groove portion can be configured to be provided in the extension portion.

  According to such a configuration, the drive motor is disposed in the opening through the upper frame while being attached to the base. On the other hand, the extension portion is configured to be able to be locked to the upper frame by protruding in a predetermined direction from the base portion. Therefore, even if the fixing by the fixing member is released, the drive motor can be prevented from falling off the upper frame.

  Then, when the bracket is moved along the direction of the groove provided in the extending portion, the bracket is released from being locked to the upper frame via the bolts and nuts as locking means. And since the opening part is comprised by the upper open shape, a drive motor can be removed from an upper frame by moving upwards. Therefore, the drive motor can be removed safely with good workability.

  In the elevator door opening / closing apparatus according to the present invention, the groove portion may be formed along a direction intersecting a predetermined extending direction in which the extending portion extends from the base portion.

  According to this configuration, when the bracket is moved along the direction of the groove portion, the drive motor is similarly moved along the direction of the groove portion. This can prevent the drive motor from falling off the upper frame as described above. Furthermore, since the drive motor does not contact the edge of the opening, the drive motor can be removed safely with better workability.

  Further, in the elevator door opening and closing device according to the present invention, the locking means includes a hole formed in the bracket, a hole formed in the upper frame corresponding to the hole, and the bracket. A bolt inserted through the hole and the hole of the upper frame; and a nut screwed into the bolt; the bolt includes a shaft and a head formed at one end of the shaft. And the hole of the bracket is a first hole that is larger than the shaft of the bolt and smaller than the head of the bolt, and a second hole that is formed integrally with the first hole. Thus, the second hole portion larger than the head portion of the bolt can be provided.

  According to such a configuration, the first hole portion is larger than the shaft portion of the bolt and smaller than the head portion of the bolt, so that the head portion of the bolt inserted through the shaft portion is locked. The bracket is locked to the upper frame by bolts and nuts as locking means by screwing the nut into the shaft portion. Therefore, even if the fixing by the fixing member is released, the drive motor can be prevented from falling off the upper frame.

  When the bracket is moved in a predetermined direction, the head portion of the bolt is formed integrally with the first hole portion, and is positioned in the second hole portion larger than the head portion of the bolt. Then, the head of the bolt is removed from the second hole by moving the bracket further in a predetermined direction. Thereby, the bracket is released from locking to the upper frame via the bolts and nuts which are locking means, and the drive motor can be removed from the upper frame. Therefore, the drive motor can be removed safely with good workability.

  In the elevator door opening / closing apparatus according to the present invention, the upper frame includes an opening having a predetermined width larger than that of the drive motor so that the drive motor is disposed through the upper frame. The opening is configured to be open upward so that the drive motor is removed from the upper frame by moving the drive motor upward, and the bracket has a predetermined length longer than the width of the opening. The locking means may be configured to include an end portion in the longitudinal direction of the bracket and an abutting portion of the upper frame with which the end portion of the bracket abuts.

  According to such a configuration, the end of the bracket of the plate-like body having a predetermined length longer than the width of the opening is locked to the upper frame via the contact portion of the upper frame as a locking means. Even if the fixing by the fixing member is released, the drive motor can be prevented from falling off the upper frame.

  By moving the drive motor upward, the bracket is released from being locked to the upper frame via the abutting portion that is the locking means, and the drive motor can be removed from the upper frame. Therefore, the drive motor can be removed safely with good workability.

  In the elevator door opening and closing apparatus according to the present invention, a support member that supports the bracket is provided on the upper frame, and the support member includes a groove portion having a predetermined width and a predetermined length. A hole formed corresponding to the groove, the fixing member includes a bolt inserted into the groove and the hole, and a nut screwed into the bolt; The bracket includes the groove portion, the hole portion, the bolt and the nut as the fixing member, and the bolt is inserted into the groove portion and the hole portion, and the nut is screwed together. The bolt is engaged with the upper frame, and the bolt has a diameter smaller than the width of the groove and smaller than the hole, and is formed at one end of the shaft and the shaft into which the nut is screwed. And a head larger than the width of the groove and larger than the hole, and the groove is configured such that when the bracket is moved in a predetermined direction, the shaft of the bolt is separated from the groove. It can be configured partially open so that it can be removed.

  According to such a configuration, the bolt is inserted into the groove portion and the hole portion by the shaft portion having a diameter smaller than the width of the groove portion and smaller than the hole portion and screwed into the nut. The bolt is locked to the surface of the bracket by a head formed at one end of the shaft and larger than the width of the groove and larger than the hole. The bracket is locked to the support member by bolts and nuts as locking means by screwing the nut into the shaft portion. Therefore, even if the fixing by the fixing member is released, the drive motor can be prevented from falling off the upper frame.

When the bracket is moved in a predetermined direction, the bracket is released from being locked to the upper frame via bolts and nuts which are locking means, and the drive motor can be removed from the upper frame. Therefore, the drive motor can be removed safely with good workability.
In the elevator door opening and closing device according to the present invention, the bracket includes a base portion fixed to the upper frame and an extending portion extending downward from one end of the base portion.
In the elevator door opening and closing apparatus according to the present invention, the upper frame includes a plate-like portion having an upper surface facing upward, and an extending portion extending downward from one end of the plate-like portion, and the bracket is A base portion fixed to the upper surface of the plate-like portion, a first extension portion extending downward from one end of the base portion, and a second extension extending in the same direction as the direction in which the base portion extends from the first extension portion. The base is configured such that the drive motor can be attached to the other end opposite to one end of the base, and the locking means includes a tip of the extension of the upper frame, It is comprised by the said 2nd extension part of the said bracket.

  As described above, according to the present invention, the drive motor can be removed safely with good workability.

It is a front view of the elevator car which concerns on 1st Embodiment, Comprising: The state which closed the car door is shown. The side view of the front side of the same car is shown. It is a front view of the same car, and shows a state where the car door is opened. The attachment state figure of the drive motor in the door opening and closing apparatus is shown. FIG. 5A shows a plan view of the bracket, and FIG. 5B shows a side view of the bracket. The attachment state figure of the drive motor in the door opening and closing apparatus concerning a 2nd embodiment is shown. The bracket in the door opening and closing apparatus is shown, FIG. 7A shows a plan view of the bracket, and FIG. 7B shows a side view of the bracket. The attachment state figure of the drive motor in the door opening and closing apparatus concerning a 3rd embodiment is shown. FIG. 9A shows a plan view of the bracket, and FIG. 9B shows a side view of the bracket. The attachment state figure of the drive motor in the door opening and closing apparatus concerning a 4th embodiment is shown. The bracket in the door opening and closing apparatus is shown, FIG. 11 (a) shows a plan view of the bracket, and FIG. 11 (b) shows a side view of the bracket. FIG. 12A shows a plan view of the bracket, and FIG. 12B shows a side view of the bracket. The front view of the drive motor in the door opening and closing apparatus concerning 6th Embodiment is shown, Fig.13 (a) shows the front view of the removed drive motor, FIG.13 (b) is the attachment state figure of a drive motor. Indicates. The attachment state figure of the drive motor in the door opening and closing apparatus concerning a 7th embodiment is shown. FIG. 15A shows a front view of one side of the bracket and the support member, and FIG. 15B shows a front view of the other side of the bracket and the support member. FIG. 15C shows a side view of the bracket and the support member. . The cross-sectional top view of the conventional elevator is shown. The front view of the elevator car is shown.

  Hereinafter, a first embodiment of an elevator door opening and closing device according to the present invention will be described with reference to the drawings. Of the configurations appearing in the present embodiment, the same or corresponding components as those in the prior art shown in FIGS. 16 and 17 are denoted by the same reference numerals.

  First, the outline | summary of the elevator which concerns on this embodiment is demonstrated, referring FIGS. 1-3. The elevator according to the present embodiment is a so-called side open type elevator in which the doorway 7 of the car 6 opens from the end. That is, the elevator according to the present embodiment has a structure in which the pair of car doors 8 and 8 move in the same direction, but one car door 8 moves more than the other car door 8. One of the car doors 8 is generally called “first door” because it has a large amount of movement, that is, has a high moving speed. The other car door 8 is generally called a “slow door” because it has a small amount of movement, that is, its movement speed is low. Hereinafter, for the sake of convenience, “f” is added to the configuration related to the first door, and “s” is added to the configuration related to the slow door.

  The car door 8f is suspended from the door rail 11f via the door hanger 12f by placing a pair of rollers 13f and 13f attached to the door hanger 12f on the door rail 11f. The car door 8s is suspended from the door rail 11s via the door hanger 12s by placing a pair of rollers 13s and 13s attached to the door hanger 12s on the door rail 11s. The door rail 11 s is directly attached to the front surface of the upper frame 10. On the other hand, the door rail 11 f is attached to the front surface of the upper frame 10 via the bracket 14. Accordingly, the door rail 11s is first arranged on the front surface of the upper frame 10, and then the door rail 11f is arranged. Therefore, the car door 8f is disposed at a position offset to the front side from the car door 8s. Therefore, when the car doors 8f and 8s are opened, the car doors 8f overlap with each other so that the car door 8s covers the car doors 8s.

  Similar to the center open type, the car door 8f is connected to a drive belt 36 of a door opening / closing device via a door hanger 12f and a connector 37 attached to the door hanger 12f. On the other hand, the car door 8s is connected to the car door 8f via a speed reduction mechanism.

  The speed reduction mechanism is an arm 15 that extends along the opening direction of the entrance / exit 7 of the car 6, the arm 15 attached to the door hanger 12 s of the car door 8 s, and the arm 15 attached to one end side and the other end side of the arm 15. A pair of reduction pulleys 16, 16, a reduction wire 17 composed of an endless wire wound between the pair of reduction pulleys 16, 16, and an upper frame for fixing a part of the reduction wire 17 to the upper frame 10 10 and a bracket 18 attached to the front surface. The car door 8f is connected to the speed reduction wire 17 of the speed reduction mechanism via a door hanger 12f and a connector 38 attached to the door hanger 12f.

  Therefore, when the drive belt 36 circulates by the drive motor 30, the car door 8f moves along the door rail 11f via the door hanger 12f. At this time, the speed reduction wire 17 circulates, and accordingly, the arm 15 and the door hanger 12s are moved. Then, the car door 8s moves along the door rail 11s and at half the speed of the car door 8f, and the car doors 8f and 8s are opened and closed.

  Note that a guide shoe 19 is provided at the lower end of each of the car doors 8f and 8s. The guide shoe 19 is fitted into a groove formed in the car sill (car floor surface) 20, and slides in the groove as the car doors 8f and 8s are opened and closed.

  Here, the door opening and closing apparatus according to the present embodiment includes a drive motor 30 disposed on one end of the front surface of the upper frame 10, a drive pulley 33 attached to a drive shaft of the drive motor 30, and the upper frame 10. A driven pulley 34 attached to the other end of the front surface, and a drive belt 36 composed of an endless belt wound around the drive pulley 33 and the driven pulley 34 are provided.

  The drive motor 30 is attached to the front surface of the upper frame 10 via a bracket 39 as shown in FIG. Therefore, the overall height of the car 6 can be reduced as compared with the conventional door opening and closing device in which the drive motor 30 is attached to the upper surface of the upper frame 10.

  The drive motor 30 is a so-called direct drive in which a housing is formed in a substantially circular shape and a drive pulley 33 is directly connected to the drive shaft. Therefore, each configuration of the motor pulley 31, the speed reduction pulley 32, and the speed reduction belt 35 in the conventional door opening and closing device can be eliminated, and the maintainability can be improved and the number of parts can be reduced to reduce the man-hours and costs. it can.

  As shown in FIGS. 4, 5 (a) and 5 (b), the upper frame 10 includes a first vertical portion 10 a extending along the front-and-rear direction of the entrance 7 of the car 6 (the left-right direction in FIG. 17), A horizontal portion 10b that is bent and extended from one vertical portion 10a and a second vertical portion 10c that is bent and extended from the horizontal portion 10b are provided. The first vertical portion 10 a has a plate shape and is provided so as to face the drive shaft of the drive motor 30 attached to the upper frame 10. The horizontal part 10b is plate-shaped, and the base end is connected to the front end of the first vertical part 10a (so as to be orthogonal). The second vertical portion 10c is also plate-shaped, and the base end thereof is connected to the front end of the horizontal portion 10b (so as to be orthogonal).

  The bracket 39 is flat and has a rectangular shape in plan view. One end portion side of the bracket 39 is fixed to the horizontal portion 10b, and the drive motor 30 is attached to the other end portion side. In the bracket 39, a groove 51 as a locking means is formed on one end side, and through holes 48 and 49 are appropriately formed on the other end side and an intermediate portion. The drive motor 30 is attached to the bracket 39 by passing the bolt 31 through the through hole 48 on the other end side and screwing the bolt 31 into a screw hole provided on the attachment surface 30 a of the drive motor 30. Further, the rear surface 53b of the bracket 39 is placed on the surface 54a of the horizontal portion 10b in a state where the through hole 49 and the through hole 50 provided in the horizontal portion 10b are aligned. Then, a bolt 43 as a fixing member is passed through a through hole 49 provided in the intermediate portion of the bracket 39 and a through hole 50 provided in the horizontal portion 10 b, and a nut 44 as a fixing member is tightened to the shaft portion 43 b of the bolt 43. The bracket 39 is attached to the surface 54a of the horizontal portion 10b by the fixing members 43 and 44. In the present embodiment, a plurality of through holes 48 are formed in a circular shape on the other end side of the bracket 39, and the two through holes 49, 49 is formed. The bracket 39 and the upper frame 10 are fixed by the fixing members 43 and 44 using the two through holes 49 and 49.

  Here, in order to prevent the drive motor 30 from dropping off from the upper frame 10 when the fixing by the fixing members 43 and 44 is released, a locking means for locking the bracket 39 to the upper frame 10 is further provided. It is done. In the present embodiment, the locking means includes the aforementioned groove portion 51 having a predetermined width and a predetermined length formed in the bracket 39, a hole portion 52 formed in the upper frame 10 corresponding to the groove portion 51, and the groove portion 51. And a bolt 45 inserted through the hole 52 and a nut 46 screwed into the bolt 45.

  The groove 51 is partially open at one end of the bracket 39. Specifically, the groove 51 is provided in an elongated shape along the longitudinal direction of the bracket 39, is closed at one end 51a, and is opened at the other end 51b. That is, the groove 51 is formed in a concave shape in a plan view extending in the longitudinal direction of the bracket 39, is closed by one end 51 a provided at the intermediate portion of the bracket 39, and is provided at the other end 47 on the one end side edge 47 of the bracket 39. It is opened at 51b. Two groove portions 51 are provided at one end portion of the bracket 39 at a predetermined interval, and the shaft portion 45 b of the bolt 45 can be inserted through each groove portion 51.

  The hole 52 is provided between the through hole 50 and the second vertical part 10c. The hole 52 coincides with the position of the groove 51 in the vertical direction by overlapping the bracket 39 and the horizontal portion 10 b of the upper frame 10.

  The bolt 45 is smaller than the width of the groove 51 and has a shaft 45 b having a diameter smaller than the hole 52, and is formed at one end of the shaft 45 b and larger than the width of the groove 51, and the hole 52. And a larger head 45a. In order to attach the bracket 39 to the upper frame 10, the back surface 53 b of the bracket 39 and the front surface 54 a of the upper frame 10 are overlapped. The shaft portion 45 b is inserted into the groove portion 51 and the hole portion 52 from above the bracket 39 in a state where the through hole 49 of the bracket 39 and the through hole 50 of the upper frame 10 are aligned. When the shaft part 45 b is inserted through the groove part 51 and the hole part 52, the head part 45 a engages the surface 53 a of the bracket 39. In this state, the nut 46 is screwed into the shaft portion 45 b of the bolt 45 and fastened, whereby the bracket 39 is locked to the horizontal portion 10 b of the upper frame 10.

  When the drive motor 30 is removed from the upper frame 10, first, the fixing by the fixing members 43 and 44 is released. More specifically, the nut 44 as a fixing member is loosened and removed from the bolt 43, and the bolt 43 is removed from the through hole 49 provided in the intermediate portion of the bracket 39, so that the fixing by the fixing members 43 and 44 is released. Is done. In this state, the bracket 39 is locked to the horizontal portion 10b of the upper frame 10 by bolts 45 and nuts 46 as locking means, so that the bracket 39 is locked to the upper frame 10 by the locking means. Is done. Therefore, the bracket 39 does not fall off from the upper frame 10. That is, the drive motor 30 does not fall off the upper frame 10 even when the fixing of the bracket 39 to the upper frame 10 by the fixing members 43 and 44 is released.

  Thereafter, in order to remove the drive motor 30 from the upper frame 10, the nut 46 as the locking means is loosened. Even in this state, the other end of the bracket 39 moves downward and slightly tilts due to gravity applied to the drive motor 30, but the surface 53 a along the groove 51 of the bracket 39 is locked by the head 45 a of the bolt 45. The Further, the nut 46 locks the back surface 54 b of the horizontal portion 10 b of the upper frame 10. Therefore, the drive motor 30 does not fall off from the upper frame 10.

  When the drive motor 30 is moved away from the first vertical portion 10 a of the upper frame 10, the bracket 39 is also moved in accordance with the movement of the drive motor 30. Then, the head 45 a of the bolt 45 moves relatively to the one end side of the bracket 39 with respect to the groove 51. When the drive motor 30 is moved in a direction sufficiently away from the first vertical portion 10 a of the upper frame 10, the shaft portion 45 b of the bolt 45 is removed from the groove portion 51 through the other end portion 51 b of the groove portion 51. Thereby, the locking of the bracket 39 to the upper frame 10 by the locking means is released, and the drive motor 30 can be removed from the upper frame 10.

  As described above, according to the door opening and closing apparatus according to the present embodiment, even if the fixing of the bracket 39 by the fixing members 43 and 44 is released, the bracket 39 is locked to the upper frame 10 by the locking means. The motor 30 does not fall off the upper frame 10. Further, the drive motor 30 can be easily detached from the upper frame 10 simply by moving the drive motor 30 away from the upper frame 10 with the bolts 45 and the nuts 46 as the locking means being loosened. Therefore, the workability of the worker is good and the drive motor 30 can be removed safely.

  Next, a second embodiment of the elevator door opening and closing apparatus according to the present invention will be described with reference to FIGS. Of the configurations appearing in the present embodiment, the same or corresponding components as those in the prior art shown in FIGS. 16 and 17 are denoted by the same reference numerals. In addition, since the configuration other than the bracket 39 and the locking means in the present embodiment is the same as the configuration in the first embodiment, the description in the present embodiment is omitted.

  The bracket 39 in the present embodiment is different from the first embodiment in that the end of the bracket 39 on the side fixed to the upper frame 10 is extended and the end is bent and extended. That is, in this embodiment, the bracket 39 includes a base portion 39a to which the drive motor 30 and the fixing members 43 and 44 are attached, and an extension portion 39b that is bent and extends from the base portion 39a.

  The base 39a has a flat plate-like rectangular shape in plan view, and extends to a position beyond the tip of the horizontal portion 10b. The extending portion 39b has a flat plate shape, and a base end thereof is connected to a tip end of the base portion 39a (so as to be orthogonal). Further, the tip of the extension part 39b extends downward. Thereby, the bracket 39 is formed in an L shape in a side view.

  The extending portion 39b is used for alignment when the bracket 39 is fixed to the upper frame 10. That is, after the bracket 39 is placed on the upper frame 10, the side surface 53 c of the extending portion 39 b is brought into contact with the side surface 54 c of the second vertical portion 10 c of the upper frame 10, thereby driving the front surface of the upper frame 10. The position of the motor 30 is adjusted. Further, the extending portion 39b is brought into contact with the second vertical portion 10c, so that the positions of the through hole 49 of the bracket 39 through which the fixing members 43 and 44 are inserted and the through hole 50 of the upper frame 10 are aligned. Thereby, workability at the time of fixing the bracket 39 to the upper frame 10 can be improved.

  In addition, as shown in FIG. 7A, the bracket 39 in the present embodiment is replaced with a first hole 55 provided on one end side of the bracket 39, instead of the groove 51 of the bracket 39 in the first embodiment, A second hole 56 formed integrally with the first hole 55.

  The first hole portion 55 is provided on the extended portion 39b side of the base portion 39a with respect to the through hole 49 through which the bolt 43 as a fixing member is inserted. Moreover, the 1st hole 55 is formed in elongate shape along the longitudinal direction of the base 39a. The first hole portion 55 is larger than the shaft portion 45 b of the bolt 45 and has a width W smaller than the head portion 45 a of the bolt 45. The first hole 55 is closed at one end 55a of the base 39a and is opened at the other end 55b. Two first holes 55 are provided at predetermined intervals in the width direction of the base 39a. The first hole 55 is formed integrally with the second hole 56 by connecting the other end 55 b of the first hole 55 to the second hole 56.

  The second hole portions 56 are formed in a substantially circular shape in plan view, and two second hole portions 56 are provided at predetermined intervals in the width direction of the base portion 39a. The second hole 56 has a diameter larger than the width W of the first hole 55 and larger than the head 45 a of the bolt 45. The second hole 56 is connected to the other end side 55 b of the first hole 55, so that the second hole 56 is formed integrally with the first hole 55.

  Here, the locking means in the present embodiment includes the first hole 55 and the second hole 56 formed in the bracket 39, the hole 52 provided in the horizontal portion 10b, the first hole 55 and the hole. The bolt 45 is inserted through the nut 52 and the nut 46 is screwed into the bolt 45.

  The bolt 45 as the locking means is formed at the shaft portion 45 b having a diameter smaller than the width of the first hole portion 55 and smaller than the hole portion 52, and one end portion of the shaft portion 45 b and the hole portion 52. And a head 45a having a diameter larger than the diameter. In order to attach the bracket 39 to the upper frame 10, the back surface 53 b of the bracket 39 and the front surface 54 a of the upper frame 10 are overlapped. The shaft portion 45 b is inserted into the first hole portion 55 and the hole portion 52 from above the bracket 39 in a state where the through hole 49 of the bracket 39 and the through hole 50 of the upper frame 10 coincide with each other. . When the shaft portion 45 b is inserted through the first hole portion 55 and the hole portion 52, the head portion 45 a engages the surface 53 a of the bracket 39. In this state, the nut 46 is screwed into the shaft portion 45 b of the bolt 45 and fastened, whereby the bracket 39 is locked to the horizontal portion 10 b of the upper frame 10.

  When the drive motor 30 is removed from the upper frame 10, the fixing by the fixing members 43 and 44 is released as in the first embodiment. In this state, the base portion 39a of the bracket 39 is locked to the horizontal portion 10b of the upper frame 10 by bolts 45 and nuts 46 as locking means, so that the bracket 39 is fixed to the upper frame 10 by the locking means. Locked. Therefore, the bracket 39 does not fall off from the upper frame 10. That is, the drive motor 30 does not fall off the upper frame 10 even when the fixing of the bracket 39 to the upper frame 10 by the fixing members 43 and 44 is released.

  Thereafter, in order to remove the drive motor 30 from the upper frame 10, the nut 46 as the locking means is loosened. Even in this state, the other end of the bracket 39 moves downward and slightly tilts due to gravity applied to the drive motor 30, but the surface 53 a along the first hole 55 of the bracket 39 is caused by the head 45 a of the bolt 45. Locked. Further, the nut 46 locks the back surface 54 b of the horizontal portion 10 b of the upper frame 10. Therefore, the drive motor 30 does not fall off from the upper frame 10.

  When the drive motor 30 is moved in a direction approaching the first vertical portion 10 a of the upper frame 10, the bracket 39 is also moved in accordance with the movement of the drive motor 30. Then, the head 45 a of the bolt 45 moves relatively to the second hole 56 side with respect to the first hole 55. Then, the bracket 39 is further moved in the direction approaching the first vertical portion 10 a, so that the head portion 45 a of the bolt 45 overlaps the second hole portion 56. Since the diameter of the second hole portion 56 is larger than the diameter of the head portion 45 a of the bolt 45, when the bracket 39 is moved upward in this state, the bracket 39 is removed from the upper frame 10. In this way, the bracket 39 is released from being locked to the upper frame 10 by the locking means, and the drive motor 30 can be removed. Note that the drive shaft of the drive motor 30 can come into contact with the upper frame 10 by moving the drive motor 30 in a direction approaching the first vertical portion 10 a of the upper frame 10. In view of this, an upper opening-like opening may be formed in the first vertical portion 10 a and the horizontal portion 10 b of the upper frame 10.

  As described above, according to the door opening and closing device according to the present embodiment, even if the fixing of the bracket 39 by the fixing members 43 and 44 is released, the bracket 39 is locked to the upper frame 10 by the locking means. The drive motor 30 does not fall off from the upper frame 10. Further, while the bolt 45 and the nut 46 as the locking means are loosened, the drive motor 30 is moved in the direction approaching the upper frame 10 and the head of the bolt 45 is passed through the second hole 56 as the locking means. The drive motor 30 can be easily detached from the upper frame 10 simply by moving upward to remove the bracket 39 from the portion 45a. Therefore, the workability of the worker is good and the drive motor 30 can be removed safely. Further, the drive motor 30 can be aligned by bringing the side surface 53c of the extending portion 39b into contact with the side surface 54c of the second vertical portion 10c. As a result, workability in attaching the drive motor 30 to the upper frame 10 can be improved, and the accuracy of the position of the drive motor 30 with respect to the front surface of the upper frame 10 can be improved.

  Next, a third embodiment of an elevator door opening and closing apparatus according to the present invention will be described with reference to FIGS. Of the configurations appearing in the present embodiment, the same or conceivable configurations as those of the prior art shown in FIGS. 16 and 17 are denoted by the same reference numerals. In addition, since the configuration other than the bracket 39 in the present embodiment is the same as the configuration in the second embodiment, the description in the present embodiment is omitted.

  The bracket 39 in the present embodiment is different from the second embodiment in that the tip of the extended portion 39b is further bent and extended. That is, in this embodiment, the bracket 39 is bent and extended from the base 39a to which the drive motor 30 is attached, the first extension 39b that is bent and extended from the base 39a, and the first extension 39b. Second extending portion 39c. In addition, since the base 39a and the 1st extension part 39b are the same as the base 39a and the extension part 39b in 2nd Embodiment, description here is abbreviate | omitted.

  The 2nd extension part 39c is flat form, and the base end is connected to the front-end | tip of the 1st extension part 39b (it orthogonally crosses). Moreover, the front-end | tip is parallel toward the base 39a, and is extended toward the direction turned back to the base 39a. Thereby, the bracket 39 is formed in a U shape in a side view.

  The second extending portion 39c is used as a further locking means in addition to the locking means in the second embodiment. That is, the latching means in the present embodiment is configured by the first latching means that is the latching means in the second embodiment and the second latching means including the second extending portion 39c. Since the 1st latching means is the same as the latching means in 2nd Embodiment, it abbreviate | omits description here. The second locking means includes a second extending portion 39c extending from the first extending portion 39b and an end portion 54d of the second vertical portion 10c that locks the second extending portion 39c.

  The second extending portion 39c acts as second locking means when the fixing members 43 and 44 are removed and the nut 46 is loosened. In this state, the other end portion of the bracket 39 moves downward and slightly tilts due to gravity applied to the drive motor 30, but the second extending portion 39c is a second locking means on the surface 53d facing the base portion 39a. It contacts the end 54d. Thereby, the 2nd extension part 39c is latched by the edge part 54d as a 2nd latching | locking part. Therefore, the drive motor 30 does not fall off from the upper frame 10.

  As described above, according to the door opening and closing apparatus according to the present embodiment, even if the fixing of the bracket 39 by the fixing members 43 and 44 is released, it is locked to the upper frame 10 by the second locking means. 30 does not fall off the upper frame 10. In addition, while the bolt 45 and the nut 46 as the locking means are loosened, the drive motor 30 is moved in a direction approaching the upper frame 10, and the bolt 45 is passed through the second hole 56 as the first locking means. The drive motor 30 can be easily removed from the upper frame 10 simply by moving upward to remove the bracket 39 from the head 45a. Therefore, the workability of the worker is good and the drive motor 30 can be removed safely.

  Next, a fourth embodiment of an elevator door opening and closing apparatus according to the present invention will be described with reference to FIGS. Of the configurations appearing in the present embodiment, the same or corresponding components as those in the prior art shown in FIGS. 16 and 17 are denoted by the same reference numerals. In addition, since the configuration other than the bracket 39, the locking unit, and the upper frame 10 in the present embodiment is the same as the configuration in the first embodiment, the description in the present embodiment is omitted.

  The drive motor 30 in the present embodiment is provided at a position different from the drive motor 30 in the first to third embodiments. The drive motor 30 is attached so as to be positioned below the horizontal portion 10b of the upper frame 10. The positions of the drive shaft and the drive pulley 33 of the drive motor 30 are matched with the positions of the drive shaft and the drive pulley 33 in the first to third embodiments. Accordingly, the first vertical portion 10 a of the upper frame 10 has a predetermined width so that at least the drive shaft and the drive pulley 33 are disposed on the front side of the upper frame 10 beyond the first vertical portion 10 a of the upper frame 10. The opening 62 is provided. In other words, the first vertical portion 10b of the upper frame 10 is provided with an opening 62 having a predetermined width larger than that of the drive motor 30 (housing) so that the drive motor 30 is disposed through the upper frame 10. It is done. The opening 62 is configured to be open upward so that the drive motor 30 is removed by moving the drive motor 30 upward.

  The bracket 39 includes a base 39a that is disposed in the opening 62 and to which the drive motor 30 is attached, and an extension 39b that extends from the base 39a in a predetermined direction. In other words, the bracket 39 includes a base portion 39a that is disposed in the opening 62 and to which the drive motor 30 is attached, and an extension portion 39b that is bent and extended at an end portion of the base portion 39a. The base 39a is flat and has a rectangular shape in plan view, and has a through hole 48 for mounting the drive motor 30 at a predetermined position. The bolt 31 is inserted into the through hole 48 and screwed into a screw hole provided on the mounting surface 30 a of the drive motor 30, so that the drive motor 30 is attached to the base portion 39 a of the bracket 39. The base 39a is directed downward with the bracket 39 attached to the upper frame 10.

  The extending portion 39b has a flat plate shape, and a base end thereof is connected to a tip end of the base portion 39a (so as to be orthogonal). Further, the tip thereof is parallel to the horizontal portion 10 b of the upper frame 10 and extends toward the driven pulley 34. Thereby, the bracket 39 is formed in an L shape in a side view.

  As shown in FIG. 11, a through hole 49 and a groove 51 are formed in the extended portion 39b as in the bracket 39 in the first embodiment. Here, since the through-hole 49 is the same as the through-hole 49 in 1st Embodiment, description in this embodiment is abbreviate | omitted.

  The groove 51 is provided in a long shape along the extending direction X of the extending portion 39b, is closed at one end 51a, and is opened at the other end 51b. That is, the groove 51 is formed in a concave shape in plan view extending in the extending direction of the extending portion 39b, is closed by one end 51a provided at the intermediate portion of the extending portion 39b, and is at the distal end side edge 47 of the extending portion 39b. It is open | released by the other end part 51b provided in. Accordingly, the groove 51 is partially opened. Two groove portions 51 are provided at one end portion of the bracket 39 at a predetermined interval, and the shaft portion 45 b of the bolt 45 can be inserted through each groove portion 51.

  In order to attach the bracket 39 to the upper frame 10, the back surface 53c of the extending portion 39b is placed on the surface 54a of the horizontal portion 10b with the through holes 49 and the through holes 50 provided in the horizontal portion 10b being aligned. The Then, by passing the bolts 43 as the fixing members through the through holes 49 and 50 and fastening the nuts as the fixing members to the shaft portions 43 b of the bolts 43, the bracket 39 is fixed to the horizontal portion by the fixing members 43 and 44. It is attached to the surface 54a of 10b. The locking means in the present embodiment includes the groove 51 described above, a hole 52 formed in the upper frame 10 corresponding to the groove 51, a bolt 45 inserted through the groove 51 and the hole 52, and a bolt And a nut 46 to be screwed to 45.

  When the drive motor 30 is removed from the upper frame 10, the fixing by the fixing members 43 and 44 is released as in the first embodiment. In this state, the extension portion 39b of the bracket 39 is locked to the horizontal portion 10b of the upper frame 10 by the bolt 45 and the nut 46 as locking means. Locked to the frame 10. Therefore, the bracket 39 does not fall off from the upper frame 10. That is, the drive motor 30 does not fall off the upper frame 10 even when the fixing of the bracket 39 to the upper frame 10 by the fixing members 43 and 44 is released.

  Thereafter, in order to remove the drive motor 30 from the upper frame 10, the nut 46 as the locking means is loosened. Even in this state, the other end side of the base portion 39a of the bracket 39 moves downward and slightly tilts due to gravity applied to the drive motor 30, but the surface 53a along the groove portion 51 of the bracket 39 is engaged by the head portion 45a of the bolt 45. Stopped. Further, the nut 46 locks the back surface 54b of the horizontal portion 10b of the upper frame 10. Therefore, the drive motor 30 does not fall off from the upper frame 10.

  When the drive motor 30 is moved away from the driven pulley 34, the bracket 39 is also moved in accordance with the movement of the drive motor 30. Then, the head portion 45a of the bolt 45 moves relatively to the tip end side of the extending portion 39b with respect to the groove portion 51. When the drive motor 30 is moved in a direction sufficiently away from the drive pulley 34, the shaft portion 45 b of the bolt 45 is removed through the other end portion 51 b of the groove portion 51. Thereby, the locking of the bracket 39 to the upper frame 10 by the locking means is released, and the drive motor 30 can be removed from the upper frame 10.

  As described above, according to the door opening and closing apparatus according to the present embodiment, the bracket 39 is locked to the upper frame 10 by the locking means even if the fixing by the fixing members 43 and 44 is released, as in the first embodiment. As a result, the drive motor 30 does not fall off the upper frame 10. Further, the drive motor 30 can be easily detached from the upper frame 10 simply by moving the drive motor 30 away from the driven pulley 34 with the bolt 45 and the nut 46 as the locking means being loosened. Therefore, the workability of the worker is good and the drive motor 30 can be removed safely.

  Next, a fifth embodiment of an elevator door opening and closing apparatus according to the present invention will be described with reference to FIG. Of the configurations appearing in the present embodiment, the same or corresponding components as those in the prior art shown in FIGS. 16 and 17 are denoted by the same reference numerals. In addition, since the configuration other than the bracket 39 in the present embodiment is the same as the configuration in the fourth embodiment, the description in the present embodiment is omitted.

  In the bracket 39 in the present embodiment, the direction from the one end 51a to the other end 51b of the groove 51 and the position of the through hole 49 are different from those in the fourth embodiment. In the present embodiment, two through holes 49 are provided at predetermined intervals in the extending direction X of the extending portion 39b.

  That is, the groove 51 is formed along a direction intersecting a predetermined extending direction in which the extending portion 39b extends from the base portion 39a. More specifically, the groove 51 is formed along a substantially orthogonal direction including a direction orthogonal to a predetermined extending direction in which the extending portion 39b extends from the base portion 39a. As shown to Fig.12 (a), the groove part 51 is comprised by the width direction Y end part of the extension part 39b partially in an open shape. Specifically, the groove 51 is provided in a long shape along the width direction Y of the extending portion 39b, is closed at one end 51a, and is opened at the other end 51b. That is, the groove 51 is formed in a concave shape in a plan view extending in the width direction Y of the extension 39b, is closed by one end 51a provided at an intermediate portion of the extension 39b, and the width direction edge 47 of the extension 39b. It is open | released by the other end part 51b provided in. Two groove portions 51 are provided at a predetermined interval in the width direction Y of the extending portion 39b, and the shaft portion 45b of the bolt 45 can be inserted through each groove portion 51. In the present embodiment, when the bracket 39 is attached to the upper frame 10, the one end 51a and the other end 51b are located on the landing 3 side and the car 6 side, respectively.

  When the drive motor 30 is removed from the upper frame 10, the fixing by the fixing members 43 and 44 is released as in the fourth embodiment. In this state, since the extended portion 39b of the bracket 39 is locked to the horizontal portion 10b of the upper frame 10 by the bolt 45 and the nut 46 as locking means, the bracket 39 is fixed to the upper frame 10 by the locking means. It is locked to. Therefore, the bracket 39 does not fall off from the upper frame 10. That is, the drive motor 30 does not fall off the upper frame 10 even when the fixing of the bracket 39 to the upper frame 10 by the fixing members 43 and 44 is released.

  Thereafter, in order to remove the drive motor 30 from the upper frame 10, the nut 46 as the locking means is loosened. Even in this state, the base 39a of the bracket 39 moves downward and slightly tilts due to gravity applied to the drive motor 30, but the surface 53a along the groove 51 of the bracket 39 is locked by the head 45a of the bolt 45. . Further, the nut 46 locks the back surface 54b of the horizontal portion 10b of the upper frame 10. Therefore, the drive motor 30 does not fall off from the upper frame 10.

  When the drive motor 30 is moved in the direction of the other end 51 b of the groove 51 (that is, the direction of the landing 3), the bracket 39 is also moved in accordance with the movement of the drive motor 30. Then, the head 45 a of the bolt 45 moves relatively to the opening 51 b side of the groove 51 with respect to the groove 51. When the drive motor 30 is sufficiently moved in the direction of the other end 51 b of the groove 51, the shaft 45 b of the bolt 45 is removed through the other end 51 b of the groove 51. Thereby, the locking of the bracket 39 to the upper frame 10 by the locking means is released, and the drive motor 30 can be removed from the bracket 39.

  As described above, according to the door opening and closing apparatus according to the present embodiment, the bracket 39 is locked to the upper frame 10 by the locking means even when the fixing by the fixing members 43 and 44 is released as in the fourth embodiment. As a result, the drive motor 30 does not fall off the upper frame 10. Further, the drive motor 30 can be easily detached from the upper frame 10 simply by moving the drive motor 30 to the landing 3 side with the bolt 45 and the nut 46 as the locking means being loosened. Therefore, the workability of the worker is good and the drive motor 30 can be removed safely.

  Moreover, according to the door opening and closing apparatus according to the present embodiment, when the drive motor 30 is removed, the drive motor 30 temporarily moves to the landing 3 side. Since the drive motor 30 is removed from the opening 62 in the upward direction of the upper frame 10, contact between the drive motor 30 and the edge of the opening 62 can be suppressed. Therefore, workability can be further improved with respect to the door opening and closing apparatus according to the fourth embodiment.

  Next, a sixth embodiment of an elevator door opening and closing apparatus according to the present invention will be described with reference to FIGS. 13 (a) and 13 (b). Of the configurations appearing in the present embodiment, the same or corresponding components as those in the prior art shown in FIGS. 16 and 17 are denoted by the same reference numerals. In addition, since the configuration other than the bracket 39 and the opening 62 in the present embodiment is the same as the configuration in the fourth embodiment, the description in the present embodiment is omitted.

  The opening 62 is configured to be open upward so that the drive motor 30 can be detached from the upper frame 10 by moving the drive motor 30 upward. Therefore, the width W 1 of the opening 62 is longer than the width W 2 of the housing of the drive motor 30.

  The bracket 39 is flat and formed in a rectangular shape in plan view, and has a plurality of through holes 48 for attaching the drive motor 30 to predetermined positions. Then, the bolt 31 is inserted into the through hole 48 and screwed into a screw hole provided on the mounting surface 30 a of the drive motor 30, so that the drive motor 30 is attached to the central portion in the longitudinal direction of the bracket 39. The bracket 39 is formed longer than the width of the opening 62. Therefore, when the drive motor 30 is attached to the upper frame 10, the drive motor 30 is disposed in the opening 62, and the back surfaces 53 b of both ends of the bracket 39 are connected to the front surface 54 a of the horizontal portion 10 b of the upper frame 10. Placed on.

  At both ends of the bracket 39, through holes 49 through which bolts 43 as fixing members are inserted are provided. Then, the bolt 43 is inserted into the through hole 49 and the through hole 50 provided also in the horizontal portion 10b of the upper frame 10, and the shaft portion 43b of the bolt 43 is tightened with the nut 44, whereby the drive motor 30 is It is fixed to the frame 10.

  Here, the locking means in the present embodiment includes a back surface 53b of both end portions of the bracket 39 and a contact portion 54e with which both end portions of the bracket 39 abut on the front surface 54a of the horizontal portion 10b of the upper frame 10. Consists of. In the present embodiment, the contact portion 54e is formed in a planar shape and is configured as a contact surface 54e. In this embodiment, unlike the first to fifth embodiments, the bolt 45 and the nut 46 as the locking means are not used.

  When the drive motor 30 is removed from the upper frame 10, the fixing by the fixing members 43 and 44 is released as in the first embodiment. In this state, the back surface 53b of the bracket 39 as the locking means is locked in a state where it is placed on the contact surface 54e of the upper frame 10 as the locking means. Therefore, the bracket 39 does not fall off from the upper frame 10. That is, the drive motor 30 does not fall off from the upper frame 10.

  Thereafter, when the drive motor 30 is moved upward to remove the drive motor 30 from the upper frame 10, the bracket 39 is also moved in accordance with the movement of the drive motor 30. Then, the back surface 53 b of the bracket 39 is detached from the contact surface 53 e of the upper frame 10. Thereby, the locking of the bracket 39 to the upper frame 10 by the locking means is released, and the drive motor 30 can be removed from the upper frame 10.

  As described above, according to the door opening and closing apparatus according to the present embodiment, the bracket 39 is locked to the upper frame 10 by the locking means even if the fixing by the fixing members 43 and 44 is released, as in the first embodiment. As a result, the drive motor 30 does not fall off the upper frame 10. Further, the drive motor 30 can be easily detached from the upper frame 10 simply by moving the drive motor 30 upward from the horizontal portion 10 b of the upper frame 10. Therefore, the workability of the worker is good and the drive motor 30 can be removed safely. In addition, since it is not necessary to use the bolt 45 and the nut 46 as the locking means, the number of parts can be reduced, the parts cost can be reduced, and the working efficiency can be increased.

  Next, a seventh embodiment of an elevator door opening and closing device according to the present invention will be described with reference to FIGS. 14 and 15A to 15C. Of the configurations appearing in the present embodiment, the same or corresponding components as those in the prior art shown in FIGS. 16 and 17 are denoted by the same reference numerals. In addition, since the configuration other than the bracket 39 and the support member 63 in the present embodiment is the same as the configuration in the second embodiment, the description in the present embodiment is omitted.

  A support member 63 for supporting the bracket 39 is attached to the upper frame 10 in the present embodiment. The support member 63 includes a base portion 63a of the support member 63 that is fixed to the upper frame 10, and an extension portion 63b of the support member 63 that is bent and extended from the base portion 63a of the support member 63. The base 63a of the support member 63 is flat and has a rectangular shape in plan view. The base 63a is appropriately provided with a plurality of through holes 60 for fixing to the surface 54a of the horizontal portion 10b of the upper frame 10 using bolts 58 and nuts 59. Therefore, bolts 58 are passed through these through holes 60, shaft parts 58b of the bolts 58 are further passed through the through holes 61 provided in the horizontal part 10b of the upper frame 10, and nuts 59 are screwed into the shaft parts 58b. Thus, the support member 63 is attached to the surface 54 a of the horizontal portion 10 b of the upper frame 10.

  As shown in FIG. 15, the extending portion 63 b of the support member 63 is also formed in a flat plate shape and a rectangular shape in plan view. The base end of the extension part 63 b is connected to the front end of the base part 63 a of the support member 63 (so as to be orthogonal). Further, the tip of the extending portion 63b of the support member 63 extends upward. Thereby, the support member 63 is formed in an L shape in a side view. A groove portion 51 that is partially opened is formed in the extending portion 63 b of the support member 63.

  The groove portion 51 is provided in a long shape along the extending direction of the extending portion 63b of the support member 63, is closed at one end portion 51a, and is opened at the other end portion 51b. That is, the groove 51 is formed in a concave shape in a plan view extending in the extending direction of the extending portion 63b of the support member 63, and is closed and extended by one end 51a provided at an intermediate portion of the extending portion 63b of the supporting member 63. It is opened at the other end 51b provided at the front end side edge 47 of the portion 63b. Accordingly, the groove 51 is partially opened. Two groove portions 51 are provided at a distal end side end portion of the extending portion 63 b of the support member 63 at a predetermined interval, and the shaft portion 45 b of the bolt 45 can be inserted through each groove portion 51.

  The bracket 39 in the present embodiment includes a base portion 39a of the bracket 39 to which the drive motor 30 is attached and an extension portion 39b of the bracket 39 that is bent and extends from the base portion 39a of the bracket 39. The base portion 39a of the bracket 39 has a flat plate shape, and a plurality of through holes 48 for attaching the drive motor 30 are appropriately provided. Therefore, the drive motor 30 is attached to the base portion 39 a of the bracket 39 by passing the bolts 31 through these through holes 48 and screwing into the screw holes formed in the attachment surface 30 a of the drive motor 30 to the bracket 39.

  The extension 39b of the bracket 39 is also plate-shaped, and its base end is connected to the tip of the base 39a of the bracket 39 (so as to be orthogonal). Further, the tip of the extending portion 39b of the bracket 39 extends upward. Thereby, the bracket 39 is formed in an L shape in a side view. The extension portion 39 b of the bracket 39 is provided with a hole portion 64 formed corresponding to the groove portion 51 formed in the extension portion 63 b of the support member 63. Here, the bolt 43 is formed at one end portion of the shaft portion 43b having a diameter smaller than the width of the groove portion 51 and smaller than the hole portion 64, and larger than the width of the groove portion 51, and A head 43a larger than the hole 64 is provided. Therefore, after the side surface 53c of the extension portion 39b of the bracket 39 and the side surface 57d of the extension portion 63b of the support member 63 are overlapped, the shaft portion 43b of the bolt 43 is inserted into the hole portion 64 and the groove portion 51, The bracket 39 is fixed to the support member 63 by the fixing members 43 and 44 by screwing and fastening the nut 44 to the shaft portion 43b. That is, the drive motor 30 is fixed to the upper frame 10.

  In the present embodiment, the locking means are formed on the bolt 43 and the nut 44 which are also fixing members, one end portion 51 a of the groove portion 51 formed in the extension portion 63 b of the support member 63, and the extension portion 39 b of the bracket 39. And the hole 64 to be formed. When the drive motor 30 is removed from the upper frame 10, the fixing by the fixing members 43, 44 is released by loosening the nut 44 attached to the bolt 43. Here, the nut 44 is loosened to the extent that it does not fall off from the bolt 43. Then, due to the weight of the drive motor 30 and the bracket 39, the bracket 39 moves downward from the fixed position. Then, the shaft portion 43 b of the bolt 43 as a fixing member comes into contact with one end portion 51 a of the groove portion 51 formed in the extending portion 63 b of the support member 63. In this state, the bolt 43 and the nut 44 engage the one end 51 a of the groove 51 formed in the extension 63 b of the support member 63 and the hole 64 formed in the extension 39 b of the bracket 39. Stop. Therefore, the bracket 39 does not fall off from the support member 63. That is, the drive motor 30 does not fall off the upper frame 10.

  Thereafter, when the drive motor 30 is lifted upward to remove the drive motor 30 from the upper frame 10, the bracket 39 is also moved in accordance with the movement of the drive motor 30. Then, the shaft portion 43 b of the bolt 43 moves relatively to the other end portion 51 b side of the groove portion 51 with respect to the groove portion 51. When the drive motor 30 is sufficiently moved upward, the shaft portion 43 b of the bolt 43 is removed through the other end portion 51 b of the groove portion 51. Thereby, the locking of the bracket 39 to the support member 63 by the locking means is released, and the drive motor 30 can be detached from the upper frame 10.

  As described above, according to the door opening and closing apparatus according to the present embodiment, even if the fixing members 43 and 44 are loosened and the fixing is released, the bracket 39 is locked to the upper frame 10 by the locking means. The drive motor 30 does not fall off from the upper frame 10. Further, the drive motor 30 can be easily detached from the upper frame 10 simply by moving the drive motor 30 upward from the upper frame 10 with the bolts 43 and the nuts 44 as the fixing members loosened. Therefore, the workability of the worker is good and the drive motor 30 can be removed safely.

  The elevator door opening and closing device according to the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.

  For example, in the above embodiment, the bolt 43 and the nut 44 are described as the fixing means 43 and 44 and the bolt 45 and the nut 46 are used as the locking means, but the through holes 50 and 51 of the upper frame 10 are described. The bolts 43 and 45 may be tightened by using a screw hole. Thereby, even if it is a case where the space according to the dimension of nuts 44 and 46 cannot be secured around penetration holes 50 and 51 of upper frame 10, upper frame 10 and bracket 39 can be fixed and locked. .

  DESCRIPTION OF SYMBOLS 1 ... Hoistway, 2 ... Entrance / exit, 3 ... landing, 4 ... landing door, 5 ... engaged part, 6 ... car, 7 ... entrance / exit, 8 ... car door, 9 ... engaging part, 10 ... upper frame, 10a ... 1st vertical part, 10b ... Horizontal part, 10c ... 2nd vertical part, 11 ... Door rail, 12 ... Door hanger, 13 ... Roller, 14 ... Bracket, 15 ... Arm, 16 ... Reduction pulley, 17 ... Reduction belt, 18 ... Bracket, 19 ... guide shoe, 20 ... car sill, 30 ... drive motor, 31 ... bolt, 33 ... drive pulley, 34 ... driven pulley, 36 ... drive belt, 37,38 ... connector, 39 ... bracket, 39a ... base , 39b ... Extension part (first extension part), 39c ... Extension part (second extension part), 43 ... Bolt (fixing means), 43a ... Head part, 43b ... Shaft part, 44 ... Nut (fixation) Means), 45... Bolt (locking means), 45 ... head, 45b ... shaft, 46 ... nut (locking means), 48, 49, 50, 60, 61 ... through hole, 51 ... groove, 62 ... opening, 52,64 ... hole, 55 ... first 1 hole portion, 56 ... second hole portion, 63 ... support member, 63a ... base portion, 63b ... extension portion

Claims (9)

A car door is provided at the doorway of the car so that it can be opened and closed. A drive motor is connected to the car door via a transmission mechanism, and the drive motor is attached to an upper frame provided above the doorway of the car via a bracket. In the elevator door opening and closing device in which the bracket is fixed to the upper frame by a fixing member,
The upper frame includes a plate-like portion having an upper surface facing upward,
The bracket is fixed to the upper surface of the plate-like portion of the upper frame by the fixing member,
A locking means for locking the bracket to the upper frame is provided to prevent the drive motor from dropping downward from the upper frame when the bracket is fixed by the fixing member. The stopping means is configured to release the locking of the bracket when the bracket is moved in a predetermined direction. The locking means is formed in the bracket and has a predetermined width and a predetermined length, a hole formed in the upper frame corresponding to the groove, and the groove and the hole. And a nut that is screwed to the bolt, and the bolt is inserted into the groove and the hole, and the nut is screwed to lock the bracket to the upper frame. Let
The bolt has a diameter smaller than the width of the groove and smaller than the hole, and a shaft portion into which a nut is screwed, and is formed at one end of the shaft portion and wider than the width of the groove portion. A large and larger head than the hole,
The groove portion is configured to be partially open so that when the bracket is moved in a predetermined direction, the shaft portion of the bolt is removed from the groove portion. Elevator door opening and closing device. A car door is provided at the doorway of the car so that it can be opened and closed. A drive motor is connected to the car door via a transmission mechanism, and the drive motor is attached to an upper frame provided above the doorway of the car via a bracket. In the elevator door opening and closing device in which the bracket is fixed to the upper frame by a fixing member,
A locking means for locking the bracket to the upper frame is provided to prevent the drive motor from dropping downward from the upper frame when the bracket is fixed by the fixing member. The stopping means is configured to release the locking of the bracket when the bracket is moved in a predetermined direction.
The locking means is formed in the bracket and has a predetermined width and a predetermined length, a hole formed in the upper frame corresponding to the groove, and the groove and the hole. And a nut that is screwed to the bolt, and the bolt is inserted into the groove and the hole, and the nut is screwed to lock the bracket to the upper frame. Let
The bolt has a diameter smaller than the width of the groove and smaller than the hole, and a shaft portion into which a nut is screwed, and is formed at one end of the shaft portion and wider than the width of the groove portion. A large and larger head than the hole,
The groove portion is configured partially open so that when the bracket is moved in a predetermined direction, the shaft portion of the bolt is removed from the groove portion,
The upper frame includes an opening having a predetermined width larger than that of the drive motor so that the drive motor is disposed through the upper frame.
The opening is configured to be open upward so that the drive motor is removed from the upper frame by moving the drive motor upward;
The bracket includes a base that is disposed in the opening and to which the drive motor is attached to determine a mounting position of the drive motor, and an extension that extends in a predetermined direction from the base.
The groove the door opening and closing device characteristics and to Rue elevators to be provided on the extending portion.   The elevator door opening / closing device according to claim 3, wherein the groove portion is formed along a direction intersecting a predetermined extending direction in which the extending portion extends from the base portion. The locking means is inserted into a hole formed in the bracket, a hole formed in the upper frame corresponding to the hole, a hole in the bracket, and a hole in the upper frame. A bolt and a nut screwed into the bolt;
The bolt includes a shaft portion and a head formed at one end of the shaft portion,
A hole portion of the bracket is larger than a shaft portion of the bolt and is smaller than a head portion of the bolt;
The elevator door opening and closing device according to claim 1, further comprising a second hole portion formed integrally with the first hole portion and having a second hole portion larger than a head portion of the bolt. The upper frame includes an opening having a predetermined width larger than that of the drive motor so that the drive motor is disposed through the upper frame.
The opening is configured to be open upward so that the drive motor is removed from the upper frame by moving the drive motor upward;
The bracket is a plate-like body having a predetermined length longer than the width of the opening,
The elevator door opening / closing device according to claim 1, wherein the locking means includes an end portion of the bracket in a longitudinal direction and a contact portion of the upper frame with which the end portion of the bracket abuts. . A support member for supporting the bracket is provided on the upper frame,
The support member includes a groove having a predetermined width and a predetermined length,
The bracket includes a hole formed corresponding to the groove,
The fixing member includes a bolt inserted through the groove and the hole, and a nut screwed into the bolt.
The locking means includes the groove, the hole, and the bolt and the nut as the fixing member, and the bolt is inserted into the groove and the hole, and the nut is screwed together. By locking the bracket to the upper frame,
The bolt has a diameter smaller than the width of the groove portion and smaller than the hole portion, and a shaft portion into which the nut is screwed, and one end portion of the shaft portion and the width of the groove portion. And a head larger than the hole,
The groove portion is configured to be partially open so that when the bracket is moved in a predetermined direction, the shaft portion of the bolt is removed from the groove portion. Elevator door opening and closing device. The door opening and closing of the elevator according to any one of claims 1 to 7, wherein the bracket includes a base portion fixed to the upper frame and an extending portion extending downward from one end of the base portion. apparatus. The upper frame includes a plate-like portion having an upper surface facing upward, and an extending portion extending downward from one end of the plate-like portion,
The bracket extends in the same direction as the base fixed to the upper surface of the plate-like portion, a first extension extending downward from one end of the base, and the base extending from the first extension. A second extension part,
The base is configured such that the drive motor can be attached to the other end opposite to one end of the base.
The said latching means is comprised by the front-end | tip of the said extension part of the said upper frame, and the said 2nd extension part of the said bracket, The any one of Claims 1-8 characterized by the above-mentioned. Elevator door opening and closing device.

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