Door device of elevator and gripping member of door device of elevator

Abstract

In the door device of an elevator, a belt gripper transmits the movement of a toothed belt to a door. The belt gripper includes a gripper body, a pressing member, a fixing member, and a pressing member. The gripper body includes a connecting portion and a first opposing portion. The pressing member includes a second opposing portion and an inclined portion. The pressing member includes a pressing bolt. When the fixing member is loosened, the pressing bolt is rotated to move the pressing bolt toward the inclined portion, thereby pressing the inclined portion and moving the pressing member toward the first opposing portion.

Description

Technical Field

[0001] The invention relates to a door device of an elevator and a belt gripper of a door device of an elevator. Background Art

[0002] In the existing elevator car door device, the door frame has a vertical part and a horizontal part. A door motor is fixed to the lower surface of the horizontal part. The door motor is provided with a first pulley. The vertical part is provided with a second pulley. An endless belt is hung around the first pulley and the second pulley.

[0003] The upper portion of the belt is connected to the upper end of the first gripper. The lower end of the first gripper is fixed to the first car door. The lower portion of the belt is connected to the upper end of the second gripper. The lower end of the second gripper is fixed to the second car door (for example, refer to Patent Document 1).

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent No. 4531899 Summary of the invention

[0007] Problems to be solved by the invention

[0008] In the past, in the above-mentioned car door device, a flat pressing member and a plurality of bolts were provided at the connection portion of the first gripping member connected to the belt. The pressing member was fixed to the upper end portion of the first gripping member by the plurality of bolts. By tightening the plurality of bolts, the upper portion of the belt was sandwiched between the upper end portion of the first gripping member and the pressing member. The plurality of bolts were arranged vertically downward on both sides in the width direction of the belt. The connection portion of the second gripping member connected to the belt was also constructed in the same manner as the connection portion of the first gripping member connected to the belt.

[0009] In such a structure, since a plurality of bolts are arranged on both sides of the belt in the width direction, the first and second gripping members have larger dimensions in the depth direction of the car. Thus, the thickness dimension of the car door device, that is, the dimension of the car door device in the depth direction of the car becomes larger.

[0010] The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to obtain an elevator door device and a gripper for an elevator door device capable of reducing the thickness of the door device.

[0011] Means for solving problems

[0012] The door device of the elevator of the present invention comprises: a door; an annular toothed belt; and a belt gripper, which is arranged between the door and the toothed belt and transmits the movement of the toothed belt to the door, and the belt gripper comprises: a gripper body; a pressing member, which is fixed to the gripper body; a fixing member, which fixes the pressing member to the gripper body; and a pressing member, which is arranged in the gripper body, and the gripper body comprises: a connecting portion, which is arranged in the up-down direction and connected to the door; and a first opposing portion, which protrudes from the connecting portion and is pressed by the first opposing portion. The pressing component comprises: a second opposing portion, which is opposed to the first opposing portion and has a toothed belt sandwiched between the second opposing portion and the first opposing portion; and an inclined portion, which moves away from the connecting portion as it goes downward, and a threaded hole is provided in the connecting portion and is opposed to the inclined portion. The pressing component comprises a pressing bolt, which is screwed into the threaded hole. When the fixing member is loosened, the pressing bolt is rotated to move the pressing bolt toward the inclined portion. As a result, the inclined portion is pressed and the pressing component moves toward the direction approaching the first opposing portion.

[0013] The belt gripper of the door device of the elevator of the present invention comprises: a gripper body; a pressing member, which is fixed to the gripper body; a fixing member, which fixes the pressing member to the gripper body; and a pressing member, which is arranged on the gripper body, the gripper body comprising: a connecting portion, which is arranged in the up-down direction and connected to the door; and a first opposing portion, which protrudes from the connecting portion, the pressing member comprising: a second opposing portion, which is opposite to the first opposing portion and has a toothed belt sandwiched between the second opposing portion and the first opposing portion; and an inclined portion, which moves away from the connecting portion as it goes downward, and a threaded hole opposite to the inclined portion is provided in the connecting portion, the pressing member comprising a pressing bolt, which is screwed into the threaded hole, and the pressing bolt is rotated when the fixing member is loosened to move the pressing bolt toward the inclined portion side, thereby pressing the inclined portion and moving the pressing member in a direction approaching the first opposing portion.

[0014] Effects of the Invention

[0015] According to the elevator door device and the belt gripper of the elevator door device of the present invention, the door device can be made thinner. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic configuration diagram showing an elevator according to Embodiment 1.

[0017] Figure 2 Viewed from the landing side Figure 1 The main part of the car is shown in the front view.

[0018] Figure 3 is along Figure 2 Cross-sectional view along line III-III.

[0019] Figure 4 Observed from the car door frame side Figure 2Rear view of the first belt gripping member.

[0020] Figure 5 It is shown Figure 4 Left side view of the first belt gripping member.

[0021] Figure 6 It is shown Figure 5 A three-dimensional view of the first belt holding member.

[0022] Figure 7 It is from Figure 6 Observe from different directions Figure 5 A three-dimensional view of the first belt holding member.

[0023] Figure 8 It is shown Figure 2 A three-dimensional view of the second belt holding member.

[0024] Fig. 9 It is from Figure 8 Observe from different directions Figure 2 A three-dimensional view of the second belt holding member.

[0025] Fig.10 This is a perspective view showing the main part of the first belt gripper according to the second embodiment.

[0026] Fig.11 It is shown Fig.10 A top view of the first belt holding member.

[0027] Fig.12 This is a perspective view showing the main part of the second belt gripper according to the second embodiment.

[0028] Fig.13 It is shown Figure 8 A stereoscopic view of a modified example of the second belt gripping member. DETAILED DESCRIPTION

[0029] Hereinafter, embodiments will be described with reference to the drawings.

[0030] Implementation method 1.

[0031] Figure 1 1 is a schematic diagram showing the structure of an elevator according to Embodiment 1. In the figure, a machine room 2 is provided above a hoistway 1. The machine room 2 is provided with a traction machine 3, a deflection sheave 4, and an elevator control device 5.

[0032] The hoisting machine 3 has a driving sheave 6, a hoisting machine motor (not shown), and a hoisting machine brake (not shown). The hoisting machine motor rotates the driving sheave 6. The hoisting machine brake keeps the driving sheave 6 stationary. In addition, the hoisting machine brake brakes the rotation of the driving sheave 6.

[0033] The suspension body 7 is hung around the driving sheave 6 and the deflector pulley 4. A plurality of ropes or a plurality of belts are used as the suspension body 7. A first end of the suspension body 7 is connected to the car 8. A second end of the suspension body 7 is connected to the counterweight 9.

[0034] The car 8 and the counterweight 9 are suspended by the suspension body 7, and the car 8 and the counterweight 9 are raised and lowered in the hoistway 1 by rotating the driving sheave 6. The elevator control device 5 controls the operation of the car 8 by controlling the traction machine 3.

[0035] A pair of car guide rails (not shown) and a pair of counterweight guide rails (not shown) are provided in the hoistway 1. The pair of car guide rails guide the car 8 to move upward and downward. The pair of counterweight guide rails guide the counterweight 9 to move upward and downward.

[0036] The car 8 has a car frame 10 and a car chamber 11. The car frame 10 is connected to the suspension body 7. The car chamber 11 is supported by the car frame 10. A first car door 12a and a second car door 12b are provided on the front surface of the car chamber 11. The first car door 12a and the second car door 12b open and close the car entrance by sliding horizontally in opposite directions.

[0037] A door controller 13 is provided on the car 8. The door controller 13 controls the opening and closing operations of the first car door 12a and the second car door 12b.

[0038] The first landing door 14a and the second landing door 14b are respectively provided at the landings of the plurality of floors. The first landing door 14a and the second landing door 14b open and close the landing entrance and exit by sliding horizontally in opposite directions. In addition, the first landing door 14a and the second landing door 14b are opened and closed in conjunction with the first car door 12a and the second car door 12b when the car 8 stops at a floor.

[0039] Figure 2 Viewed from the landing side Figure 1 A front view of the main part of the car 8. A car door frame 21 is fixed to the upper part of the car entrance. A car door rail 22 is provided on the car door frame 21. The car door rail 22 is formed parallel to the width direction of the car entrance and horizontally on the car door frame 21. The width direction of the car entrance is a direction parallel to the opening and closing direction of the first car door 12a and the second car door 12b. Figure 2 left and right direction.

[0040] A door motor 23 is provided at the first end in the length direction of the car door frame 21. The length direction of the car door frame 21 is parallel to the width direction of the car entrance. A thin motor is used as the door motor 23. A thin motor is a motor whose axial dimension is smaller than the dimension in the direction perpendicular to the axial direction.

[0041] The door motor 23 is connected to a first pulley 24. The first pulley 24 is disposed on the car chamber 11 side with respect to the door motor 23. The first pulley 24 is rotated by the door motor 23.

[0042] A second pulley 25 is provided at a second end portion in the longitudinal direction of the car door frame 21. An endless toothed belt 26 is wound around the first pulley 24 and the second pulley 25.

[0043] The first car door 12a includes a first door panel 27 and a first door hanger 28. The first door hanger 28 is fixed to an upper portion of the first door panel 27.

[0044] The second car door 12 b includes a second door panel 29 and a second door hanger 30 . The second door hanger 30 is fixed to an upper portion of the second door panel 29 .

[0045] The first car door 12 a and the second car door 12 b are suspended from the car door rail 22 , and are opened and closed along the car door rail 22 .

[0046] The first car door 12a is connected to the lower portion of the toothed belt 26 via the first belt catcher 31. That is, the first belt catcher 31 is provided between the first car door 12a and the toothed belt 26. The lower end portion of the first belt catcher 31 is connected to the first door hanger 28.

[0047] The second car door 12b is connected to the upper portion of the toothed belt 26 via the second belt catcher 32. That is, the second belt catcher 32 is provided between the second car door 12b and the toothed belt 26. The lower end portion of the second belt catcher 32 is connected to the second door hanger 30.

[0048] When the first pulley 24 rotates, the toothed belt 26 circulates and the second pulley 25 rotates. At this time, the first belt gripper 31 transmits the movement of the lower portion of the toothed belt 26 to the first car door 12a. In addition, the second belt gripper 32 transmits the movement of the upper portion of the toothed belt 26 to the second car door 12b. As a result, the first car door 12a and the second car door 12b perform an opening and closing operation.

[0049] The car door device of Embodiment 1 includes a first car door 12 a , a second car door 12 b , a car door frame 21 , a door motor 23 , a first pulley 24 , a second pulley 25 , a toothed belt 26 , a first belt gripper 31 , and a second belt gripper 32 .

[0050] Figure 3 is along Figure 2 A pair of hanger rollers 33 and a pair of upper pressing rollers 34 are provided on the first door hanger 28 and the second door hanger 30, respectively. Each hanger roller 33 moves while rolling on the car door rail 22 during the opening and closing operation of the first car door 12a and the second car door 12b.

[0051] Each upper pressing roller 34 is arranged just below the corresponding hanger roller 33. In addition, each upper pressing roller 34 prevents the corresponding hanger roller 33 from falling off from the car door rail 22.

[0052] A car sill (not shown) is provided on the floor portion of the car entrance and exit. The door motor 23 is arranged at a position closer to the car chamber 11 side than the car sill line SL. That is, the door motor 23 does not protrude toward the landing side than the car sill line SL. When viewed along the opening and closing movement direction of the first car door 12a and the second car door 12b, the car sill line SL is a straight line obtained by extending the end surface of the car sill on the landing side vertically upward.

[0053] Figure 4 It is observed from the side of the car door frame 21 Figure 2 1 with a rear view of the gripping member 31. Figure 5 It is shown Figure 4 A left side view of the first belt gripping member 31. Figure 6 It is shown Figure 5 A three-dimensional view of the first belt gripping member 31. Figure 7 It is from Figure 6 Observe from different directions Figure 5 A three-dimensional view of the first belt gripping member 31. Figures 5 to 7 In the embodiment, the toothed belt 26 is omitted.

[0054] The first belt gripper 31 includes a gripper body 41 , a pressing member 42 , an engaging member 43 , a pair of fixing bolts 44 as fixing members, a pressing bolt 45 as a pressing member, and a stop nut 46 .

[0055] The gripper body 41 is formed by bending a metal flat plate into an L-shape. The gripper body 41 includes a connecting portion 41a and a first facing portion 41b.

[0056] The connection part 41a is arranged in the up-down direction. In addition, the lower end of the connection part 41a is connected to the first door hanger 28.

[0057] The first facing portion 41b protrudes from the upper end of the connecting portion 41a at a right angle to the connecting portion 41a. That is, the first facing portion 41b is arranged horizontally.

[0058] The pressing member 42 is fixed to the gripper body 41 by a pair of fixing bolts 44. The pressing member 42 is formed by bending a metal flat plate. The pressing member 42 has an overlapping portion 42a, a second facing portion 42b, and an inclined portion 42c.

[0059] The overlapping portion 42a overlaps the connecting portion 41a. In addition, a pair of first screw holes 42d are provided in the overlapping portion 42a. A corresponding fixing bolt 44 is screwed into each of the first screw holes 42d.

[0060] The connecting portion 41a is provided with a pair of long holes 41c. A corresponding fixing bolt 44 is inserted through each of the long holes 41c. By loosening the pair of fixing bolts 44, the pressing member 42 can move in the vertical direction relative to the gripper body 41 along the pair of long holes 41c.

[0061] The heads of the pair of fixing bolts 44 are located on the opposite side of the pressing member 42 with respect to the connecting portion 41a. That is, each fixing bolt 44 is passed through the corresponding long hole 41c from the landing side and is screwed into the corresponding first threaded hole 42d.

[0062] The second opposing portion 42b protrudes from the upper end of the overlapping portion 42a at a right angle to the overlapping portion 42a. That is, the second opposing portion 42b is arranged horizontally. In addition, the second opposing portion 42b is arranged directly below the first opposing portion 41b and is opposite to the first opposing portion 41b. In addition, the second opposing portion 42b is arranged parallel to the first opposing portion 41b. In addition, the toothed belt 26 is sandwiched between the second opposing portion 42b and the first opposing portion 41b.

[0063] The inclined portion 42c protrudes obliquely downward from the lower end of the overlapping portion 42a relative to the connecting portion 41a and the overlapping portion 42a. That is, the inclined portion 42c is separated from the connecting portion 41a as it goes downward.

[0064] The meshing member 43 is provided between the first opposing portion 41b and the second opposing portion 42b. In addition, the meshing member 43 is made of metal such as iron, aluminum, and aluminum alloy. In addition, the meshing member 43 may also be made of non-metal. As the non-metal, for example, resin may be cited. As the resin, for example, plastic may be cited. In addition, the meshing member 43 has a flat base 43a, a plurality of teeth 43b, and a protrusion.

[0065] The plurality of teeth 43b protrude from the base portion 43a in the same direction, respectively, and come into contact with the toothed belt 26. Thus, the meshing member 43 meshes with the toothed belt 26.

[0066] The protrusions of Embodiment 1 include a first protrusion 43c and a second protrusion 43d. The first protrusion 43c and the second protrusion 43d protrude from the base 43a in a direction opposite to the plurality of teeth 43b.

[0067] The first protrusion 43c is provided at the first end of the base 43a in the length direction of the toothed belt 26. The second protrusion 43d is provided at the second end of the base 43a in the length direction of the toothed belt 26. The length direction of the toothed belt 26 is parallel to the width direction of the car entrance and exit, and is parallel to the length direction of the toothed belt 26. Figure 4The second end of the base 43a is an end on the side opposite to the first end of the base 43a.

[0068] The first protrusion 43c abuts against a first end surface of the first facing portion 41b in the longitudinal direction of the toothed belt 26. The second protrusion 43d abuts against a second end surface of the first facing portion 41b in the longitudinal direction of the toothed belt 26.

[0069] Thus, the first protrusion 43c and the second protrusion 43d prevent the engagement member 43 from moving relative to the gripper body 41 in the longitudinal direction of the toothed belt 26. The second end surface of the first facing portion 41b is the end surface opposite to the first end surface of the first facing portion 41b.

[0070] An engagement groove 43e is formed between the first protrusion 43c and the second protrusion 43d of the meshing member 43. The first opposing portion 41b is engaged with the engagement groove 43e. The meshing member 43 and the lower portion of the toothed belt 26 are sandwiched between the first opposing portion 41b and the second opposing portion 42b. Furthermore, the lower portion of the toothed belt 26 is sandwiched between the meshing member 43 and the second opposing portion 42b.

[0071] The shape of the cross section of the engaging member 43 perpendicular to the width direction of the toothed belt 26 is the same over the entire range of the direction parallel to the width direction of the toothed belt 26. The engaging member 43 is manufactured by drawing.

[0072] The width direction of the toothed belt 26 is perpendicular to the length direction of the toothed belt 26 and perpendicular to the thickness direction. Figure 4 and Figure 5 The thickness direction of the toothed belt 26 is parallel to the vertical direction and is parallel to the Y-axis. Figure 4 and Figure 5 The direction parallel to the Z axis.

[0073] The connection portion 41a is provided with a second threaded hole 41d. The second threaded hole 41d faces the inclined portion 42c. The pressing bolt 45 is screwed into the second threaded hole 41d and penetrates the connection portion 41a. The tip of the pressing bolt 45 abuts against the inclined portion 42c.

[0074] The head of the pressing bolt 45 is located on the opposite side of the pressing member 42 with respect to the connecting portion 41a. That is, the pressing bolt 45 is screwed into the second screw hole 41d from the landing side.

[0075] The pressing bolt 45 is rotated while the pair of fixing bolts 44 are loosened, so that the pressing bolt 45 moves toward the inclined portion 42c, and the inclined portion 42c is pressed by the pressing bolt 45. As a result, the pressing member 42 moves toward the first opposing portion 41b, that is, upward. Therefore, the pressing bolt 45 presses the second opposing portion 42b toward the first opposing portion 41b, thereby pressing the toothed belt 26 against the meshing member 43.

[0076] The stopper nut 46 is arranged on the side opposite to the pressing member 42 with respect to the connecting portion 41a. The stopper nut 46 is in contact with the connecting portion 41a. The pressing bolt 45 is screwed into the stopper nut 46.

[0077] Figure 8 It is shown Figure 2 A three-dimensional view of the second belt gripping member 32. Fig. 9 It is from Figure 8 Observe from different directions Figure 2 A three-dimensional view of the second belt gripping member 32. The structure of the second belt gripping member 32 is the same as that of the first belt gripping member 31.

[0078] However, the vertical dimension of the connecting portion 41a of the second belt gripper 32 is larger than that of the first belt gripper 31. In addition, the engaging member 43 of the second belt gripper 32 is arranged vertically reversely relative to the engaging member 43 of the first belt gripper 31.

[0079] The first protrusion 43c abuts against a first end surface of the second facing portion 42b in the longitudinal direction of the toothed belt 26. The second protrusion 43d abuts against a second end surface of the second facing portion 42b in the longitudinal direction of the toothed belt 26.

[0080] Thus, the first protrusion 43c and the second protrusion 43d prevent the base 43a from moving relative to the gripper body 41 in the longitudinal direction of the toothed belt 26. The second end surface of the second facing portion 42b is the end surface opposite to the first end surface of the second facing portion 42b.

[0081] The second facing portion 42b is fitted into the fitting groove 43e. The meshing member 43 and the upper portion of the toothed belt 26 are sandwiched between the first facing portion 41b and the second facing portion 42b. Also, the upper portion of the toothed belt 26 is sandwiched between the meshing member 43 and the first facing portion 41b.

[0082] like Figure 3 As shown in FIG. 1 , when viewed along the length direction of the car door frame 21, the head of the pressing bolt 45 with the second gripper 32 is arranged within the thickness range of the door motor 23 in the depth direction of the car chamber 11. The depth direction of the car chamber 11 is a direction perpendicular to the width direction and the up-down direction of the car entrance and exit, and is Figure 3 left and right direction.

[0083] In addition, although Figure 3 The first belt gripper 31 is not shown, but when viewed along the length direction of the car door frame 21 , the head of the pressing bolt 45 of the first belt gripper 31 is also arranged within the thickness range of the door motor 23 in the depth direction of the car chamber 11 .

[0084] Furthermore, when viewed in the longitudinal direction of the car door frame 21 , the heads of the pressing bolts 45 of the first belt catch 31 and the second belt catch 32 overlap with the door motor 23 .

[0085] In such a car door device, the first belt gripper 31, and the second belt gripper 32, the pressing member 42 is provided with an inclined portion 42c. In addition, the connecting portion 41a is provided with a second threaded hole 41d that is opposed to the inclined portion 42c. And the pressing bolt 45 functions like a wedge by pressing the inclined portion 42c of the pressing member 42, and presses the second opposing portion 42b toward the first opposing portion 41b.

[0086] Thus, the horizontal movement of the pressing bolt 45 is converted into the upward movement of the pressing member 42. Therefore, the pressing bolts 45 for attaching the first belt catcher 31 and the second belt catcher 32 to the toothed belt 26 can be arranged horizontally.

[0087] Thus, compared with a structure in which a plurality of bolts are arranged vertically downward on both sides in the width direction of the toothed belt 26, the dimension of the first opposing portion 41b in the width direction of the toothed belt 26 can be reduced. As a result, the dimensions of the first belt gripper 31 and the second belt gripper 32 in the depth direction of the car chamber 11 can be reduced, and the car door device can be made thinner.

[0088] In addition, by making the car door device thinner, such as Figure 3 As shown, the door motor 23 may be arranged not on the ceiling of the car room 11 but in a position in front of the car room 11 below the ceiling of the car room 11 .

[0089] This can expand the application range of the car door device of Embodiment 1. That is, even when the car door device of Embodiment 1 is set as a standard specification, the car door device of Embodiment 1 can be applied to a car door device of special specifications.

[0090] As the car door device of special specifications, for example, there can be cited a car door device with a speed reducer and a car door device installed in a high-ceiling type car room. Among these car door devices of special specifications, for example, Figure 3 A small pulley and a door motor 23 are arranged on the car door frame 21, and Figure 3 The position of the door motor 23 is configured with a large pulley.

[0091] In addition, the height of the toothed belt 26 from the upper end of the car entrance and exit can be fixed. Thus, the height of the first car door 12a and the second car door 12b can be fixed. In addition, there is no need to correct the height deviation from the landing door device. In addition, the application change of the car door device caused by the height difference of the ceiling of the car room 11 can be reduced, so that the car door device can be produced as a module regardless of the specifications of the elevator.

[0092] Furthermore, according to the car door device of Embodiment 1, the pressing bolt 45 can be operated from the front, and sufficient working space can be ensured. Therefore, the first belt gripper 31 and the second belt gripper 32 can be easily attached to the toothed belt 26. Furthermore, the space around the car door device can be used efficiently.

[0093] Furthermore, since the pair of long holes 41 c are provided in the connecting portion 41 a , the pressing member 42 can be moved up and down relative to the gripper body 41 with a simple structure.

[0094] Furthermore, since the meshing member 43 meshes with the toothed belt 26, even if the pair of fixing bolts 44 are slightly loosened, the toothed belt 26 does not shift relative to the gripper body 41. Therefore, the frequency of tightening the pair of fixing bolts 44 can be reduced, and the maintenance work can be reduced.

[0095] In addition, the first protrusion 43c and the second protrusion 43d are provided on the meshing member 43. Furthermore, the first protrusion 43c and the second protrusion 43d abut against any one of the first opposing portion 41b and the second opposing portion 42b, thereby preventing the meshing member 43 from moving relative to the gripper body 41 along the length direction of the toothed belt 26. Therefore, the displacement of the first belt gripper 31 and the second belt gripper 32 relative to the toothed belt 26 can be more reliably suppressed.

[0096] Furthermore, a common engagement member 43 can be used in the first tape gripper 31 and the second tape gripper 32 .

[0097] Furthermore, the shape of the cross section of the engaging member 43 perpendicular to the width direction of the toothed belt 26 is the same over the entire range of the direction parallel to the width direction of the toothed belt 26. Therefore, the engaging member 43 can be easily manufactured by drawing.

[0098] In addition, the protrusion has the first protrusion 43c and the second protrusion 43d. Therefore, it is possible to suppress the first belt gripper 31 and the second belt gripper 32 from being displaced relative to the toothed belt 26 in both the opening and closing directions.

[0099] Implementation method 2.

[0100] Next, Fig.10 It is a perspective view showing the main part of the first belt gripper 31 according to the second embodiment. Fig.11 It is shown Fig.10 4 is a top view of the first belt gripper 31 of the second embodiment. The distal end of the first facing portion 41b of the first belt gripper 31 of the second embodiment protrudes from the fitting groove 43e. In addition, a pair of first movement restricting portions 41g are provided at the distal end of the first facing portion 41b.

[0101] A pair of first movement restricting portions 41g protrude outward from both ends of the first opposing portion 41b in the longitudinal direction of the toothed belt 26. The pair of first movement restricting portions 41g restrict movement of the engagement member 43 in a direction perpendicular to and horizontal to the longitudinal direction of the toothed belt 26 by abutting against the first protrusion 43c and the second protrusion 43d.

[0102] The surface of each first movement restricting portion 41 g that faces the engaging member 43 is inclined with respect to the end surface of the engaging member 43 .

[0103] Fig.12 1 is a perspective view showing the main part of the second belt gripper 32 of Embodiment 2. The distal end of the second opposing portion 42b of the second belt gripper 32 of Embodiment 2 protrudes from the fitting groove 43e. In addition, a pair of second movement restricting portions 42e are provided at the distal end of the second opposing portion 42b.

[0104] The pair of second movement restricting portions 42e protrude outward from both ends of the second opposing portion 42b in the longitudinal direction of the toothed belt 26. The pair of second movement restricting portions 42e restrict movement of the engagement member 43 in a direction perpendicular to and horizontal to the longitudinal direction of the toothed belt 26 by abutting against the first protrusion 43c and the second protrusion 43d.

[0105] The surface of each second movement restricting portion 42e that faces the engaging member 43 is inclined with respect to the end surface of the engaging member 43. The other structures are the same as those of the first embodiment.

[0106] According to such a configuration, it is possible to obtain the same effects as those of Embodiment 1. Furthermore, it is possible to suppress the engagement member 43 from being displaced from an appropriate position or falling when the pressing member 42 is moved, thereby improving workability.

[0107] In the second embodiment, the number and positions of the movement restricting portions are not limited to the above-described examples.

[0108] In the second embodiment, the surface of each first movement restricting portion 41g facing the meshing member 43 is not limited to an inclined surface, and may be, for example, a plane parallel to the end surface of the meshing member 43. Similarly, the surface of each second movement restricting portion 42e facing the meshing member 43 is not limited to an inclined surface, and may be, for example, a plane parallel to the end surface of the meshing member 43.

[0109] Furthermore, in Embodiments 1 and 2, the inclined portion 42 c is directly pressed by the pressing bolt 45 , but another member may be interposed between the pressing bolt 45 and the inclined portion 42 c .

[0110] In addition, in Embodiment 1 and Embodiment 2, either the first protrusion 43c or the second protrusion 43d may be omitted. In this case, the first belt gripper 31 and the second belt gripper 32 can be suppressed from being offset relative to the toothed belt 26 in one of the opening and closing movement directions of the first car door 12a and the second car door 12b.

[0111] In addition, for example Fig.13 As shown, both the first protrusion 43c and the second protrusion 43d may be omitted.

[0112] In addition, an intermediate protrusion may be provided in the middle of the base 43a in the longitudinal direction of the toothed belt 26 instead of the first protrusion 43c and the second protrusion 43d. In this case, the intermediate protrusion protrudes from the base 43a in the direction opposite to the plurality of teeth 43b. In addition, the intermediate protrusion is inserted into the intermediate groove provided in the first opposing portion 41b or the second opposing portion 42b.

[0113] Furthermore, the cross section of the engagement member 43 does not necessarily need to be uniform over the entire range of the direction parallel to the width direction of the toothed belt 26 .

[0114] Furthermore, the engaging member 43 may be omitted.

[0115] In addition, the door device of the elevator can be as follows Figure 2 The center-split door device shown can also be a side-opening door device.

[0116] In addition, the number of doors is not particularly limited.

[0117] Furthermore, the door device of the elevator may be any door device using a toothed belt, and may be a landing door device.

[0118] In addition, the types of elevators are not limited to Figure 1 Type, for example, it can also be a 2:1 rope winding elevator.

[0119] In addition, the elevator may be a machine room-less elevator, a double-deck elevator, a single-shaft multi-car elevator, etc. The single-shaft multi-car elevator is a system in which an upper car and a lower car arranged just below the upper car are independently raised and lowered in a common shaft.

[0120] Description of symbols

[0121] 12a: 1st car door; 12b: 2nd car door; 26: toothed belt; 31: 1st belt gripper; 32: 2nd belt gripper; 41: gripper body; 41a: connecting portion; 41b: 1st opposing portion; 41c: long hole; 41d: 2nd threaded hole; 41g: 1st movement limiting portion; 42: pressing member; 42b: 2nd opposing portion; 42c: inclined portion; 42e: 2nd movement limiting portion; 43: engaging member; 43a: base; 43b: teeth; 44: fixing bolt (fixing member); 45: pressing bolt (pressing member).

Claims

1. A door device for an elevator, in, The door device of the elevator comprises: Door; an endless toothed belt; and a belt gripper disposed between the door and the toothed belt to transmit the movement of the toothed belt to the door, The belt gripper has: A gripping member body; A pressing component fixed to the gripping member body; a fixing member, which fixes the pressing member to the gripping member body; and A pressing member is arranged on the gripping member body, The gripper body has: a connecting portion arranged in the up-down direction and connected to the door; and a first opposing portion protruding from the connecting portion, The pressing component has: a second opposing portion that opposes the first opposing portion and sandwiches the toothed belt between the second opposing portion and the first opposing portion; and an inclined portion which moves away from the connecting portion as it goes downward, The connecting portion is provided with a threaded hole opposite to the inclined portion, The pressing member has a pressing bolt which is screwed into the threaded hole. The pressing bolt is rotated in a state where the fixing member is loosened to move the pressing bolt toward the inclined portion, thereby pressing the inclined portion and moving the pressing member toward the first opposing portion. The connecting portion is provided with a long hole, The fixing piece passes through the long hole, By releasing the fixing member, the pressing component can move in the upward and downward directions relative to the gripping member body along the long hole.

2. An elevator door device, in, The door device of the elevator comprises: Door; an endless toothed belt; and a belt gripper disposed between the door and the toothed belt to transmit the movement of the toothed belt to the door, The belt gripper has: A gripping member body; A pressing component fixed to the gripping member body; a fixing member, which fixes the pressing member to the gripping member body; and A pressing member is arranged on the gripping member body, The gripper body has: a connecting portion arranged in the up-down direction and connected to the door; and a first opposing portion protruding from the connecting portion, The pressing component has: a second opposing portion that opposes the first opposing portion and sandwiches the toothed belt between the second opposing portion and the first opposing portion; and an inclined portion which moves away from the connecting portion as it goes downward, The connecting portion is provided with a threaded hole opposite to the inclined portion, The pressing member has a pressing bolt which is screwed into the threaded hole. The pressing bolt is rotated in a state where the fixing member is loosened to move the pressing bolt toward the inclined portion, thereby pressing the inclined portion and moving the pressing member toward the first opposing portion. The belt gripper further includes an engaging member disposed between the first opposing portion and the second opposing portion and engaged with the toothed belt. The engaging member has: Flat base; as well as a plurality of teeth, each of which protrudes from the base in the same direction and contacts the toothed belt; A movement restricting portion that restricts movement of the engagement member in a direction perpendicular to and horizontal to the longitudinal direction of the toothed belt is provided on one of the first opposing portion and the second opposing portion.

3. A gripping member for a door device of an elevator, in, The belt gripping member of the door device of the elevator has: A gripping member body; A pressing component fixed to the gripping member body; a fixing member, which fixes the pressing member to the gripping member body; and A pressing member is arranged on the gripping member body, The gripper body has: a connecting portion disposed in the up-down direction and connected to the door; and a first opposing portion protruding from the connecting portion, The pressing component has: a second opposing portion that is opposed to the first opposing portion and has a toothed belt interposed therebetween; and an inclined portion which moves away from the connecting portion as it goes downward, The connecting portion is provided with a threaded hole opposite to the inclined portion, The pressing member has a pressing bolt which is screwed into the threaded hole. The pressing bolt is rotated in a state where the fixing member is loosened to move the pressing bolt toward the inclined portion, thereby pressing the inclined portion and moving the pressing member toward the first opposing portion. The connecting portion is provided with a long hole, The fixing piece passes through the long hole, By releasing the fixing member, the pressing component can move in the upward and downward directions relative to the gripping member body along the long hole.

4. A gripping member for a door device of an elevator, in, The belt gripping member of the door device of the elevator has: A gripping member body; A pressing component fixed to the gripping member body; a fixing member, which fixes the pressing member to the gripping member body; and A pressing member is arranged on the gripping member body, The gripper body has: a connecting portion disposed in the up-down direction and connected to the door; and a first opposing portion protruding from the connecting portion, The pressing component has: a second opposing portion that is opposed to the first opposing portion and has a toothed belt interposed therebetween; and an inclined portion which moves away from the connecting portion as it goes downward, The connecting portion is provided with a threaded hole opposite to the inclined portion, The pressing member has a pressing bolt which is screwed into the threaded hole. The pressing bolt is rotated in a state where the fixing member is loosened to move the pressing bolt toward the inclined portion, thereby pressing the inclined portion and moving the pressing member toward the first opposing portion. The belt gripper further includes an engaging member disposed between the first opposing portion and the second opposing portion and engaged with the toothed belt. The engaging member has: Flat base; as well as a plurality of teeth, each of which protrudes from the base in the same direction and contacts the toothed belt; A movement restricting portion that restricts movement of the engagement member in a direction perpendicular to and horizontal to the longitudinal direction of the toothed belt is provided on one of the first opposing portion and the second opposing portion.

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