Elevator car and elevator

Abstract

To provide an elevator car capable of achieving lightweight of a support frame, and an elevator.SOLUTION: A support frame 4 comprises a bracket at multiple portions of an upper edge, and supports a first pulley 351, a second pulley 352, and door position detection units 354 to 356 through the bracket. Thereby, it is not necessary to secure a region where the first pulley 351, the second pulley 352, and the door position detection units 354 to 356 are arranged, on a front surface of the support frame 4. Therefore, it is possible to reduce a height dimension of the support frame 4 and to achieve lightweight of the support frame 4.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to an elevator car equipped with a car door device and to an elevator. [Background technology]

[0002] A known example of this type of car is one that includes: i) a door rail that is installed in the left-right direction along the upper edge of the car entrance; ii) a car door that is slidably supported on the door rail; iii) a first pulley and a second pulley that are installed above the door rail at a distance in the left-right direction; iv) a drive belt that is wound around the first pulley and the second pulley and is operatively connected to the car door; and v) a plate-shaped support frame that supports the door rail, the first pulley, and the second pulley on the front surface (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2011-514298 Summary of the Invention [Problem to be solved by the invention]

[0004] However, conventional cages have the problem that the height dimension of the support frame is large and the weight of the support frame is heavy because the door rail, first pulley (and the drive motor if the drive motor is directly connected to the first pulley), and second pulley are placed on the front of the support frame.

[0005] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an elevator car and an elevator that can reduce the weight of the support frame. [Means for solving the problem]

[0006] The elevator car according to the present invention comprises: a door rail that supports the car door so that the car door can slide left and right; a first pulley and a second pulley provided above the door rail and spaced apart in the left-right direction, around which a drive belt is wound and which is operatively connected to the car door; a door position detection unit that detects that the car door is in a predetermined position; A door rail is provided on the front surface, and a support frame is provided with brackets at multiple locations on the upper edge, and the support frame supports the first pulley, the second pulley, and the door position detection unit via the brackets. It is an elevator car.

[0007] In addition, as one aspect of the elevator car according to the present invention, A drive motor is provided which is directly connected to the first pulley, The drive motor is supported on the support frame via a bracket. The above configuration can be adopted.

[0008] In addition, as one aspect of the elevator car according to the present invention, the car door is provided with a roller that rotates by engaging with an upper edge of the door rail from above; The upper edge of the support frame is positioned lower than the top of the roller The above configuration can be adopted.

[0009] In addition, as one aspect of the elevator car according to the present invention, The support frame is a member that is long in the left-right direction and is arranged along a vertical plane. The first pulley, the second pulley, and the door position detector are disposed above the support frame in an open space between a front offset surface and a rear offset surface, the front offset surface being based on the vertical plane of the support frame. The above configuration can be adopted.

[0010] In addition, as one aspect of the elevator car according to the present invention, Equipped with a cover that covers part or all of the open space from the front, back, and above The above configuration can be adopted.

[0011] In addition, as one aspect of the elevator car according to the present invention, The support frame includes a main body portion and a forward protrusion portion that protrudes forward from at least a portion of an upper edge of the main body portion; a bracket supporting the drive motor has an upper surface at a portion thereof, and is attached to the support frame so that the upper surface is at the same height as an upper surface of the forward protrusion; The drive motor has a base surface and is attached to the bracket so that the base surface is in contact with the upper surface of the forward protrusion and the upper surface of the bracket across the base surface. The above configuration can be adopted.

[0012] In addition, as one aspect of the elevator car according to the present invention, The drive motor is attached to the bracket so that the tip of the base surface coincides with the tip of the upper surface of the forward protrusion. The above configuration can be adopted.

[0013] In addition, as one aspect of the elevator car according to the present invention, The support frame includes a main body portion and a forward protrusion portion that protrudes forward from at least a portion of an upper edge of the main body portion; The bracket has an upper surface on one side and is attached to the support frame so that the upper surface is at the same height as the upper surface of the forward protrusion. The above configuration can be adopted.

[0014] In addition, as one aspect of the elevator car according to the present invention, The bracket is attached to the support frame using a fixture that can be locked and unlocked by rotating it from the front of the support frame. The above configuration can be adopted.

[0015] In addition, as one aspect of the elevator car according to the present invention, the car door includes a door panel and a door hanger attached to an upper end of the door panel; The door hanger includes an extension portion that projects upward from a portion of the main body, The car door is connected to the drive belt at the extension. The above configuration can be adopted.

[0016] In addition, as one aspect of the elevator car according to the present invention, The extension portion is provided with a detection piece for the door position detection portion. The above configuration can be adopted.

[0017] Further, the elevator according to the present invention is The elevator car is provided It's an elevator. [Effects of the Invention]

[0018] According to the present invention, the support frame has brackets at multiple locations on its upper edge, and supports the first pulley, the second pulley, and the door position detector via the brackets. This eliminates the need to secure an area on the front surface of the support frame for arranging the first pulley, the second pulley, and the door position detector. Therefore, according to the present invention, the height dimension of the support frame can be reduced, making the support frame lighter, which in turn reduces manufacturing costs, improves installation efficiency, and reduces operating costs. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1 is a perspective view of an elevator. [Figure 2] Fig. 2(a) is a front view of the car with the car door closed, as viewed from the landing side, and Fig. 2(b) is a front view of the car with the car door open. [Figure 3] FIG. 3 is a front view of the upper part of the car with the car doors closed. [Figure 4] FIG. 4 is a front view of the upper part of the car with the car doors open. [Figure 5] Fig. 5(a) is a cross-sectional view taken along line A in Fig. 3. Fig. 5(b) is a cross-sectional view taken along line B in Fig. 3. [Figure 6] Fig. 6(a) is a front view of the upper part of the car with the car door removed. Fig. 6(b) is a cross-sectional view taken along line C in Fig. 6(a). Fig. 6(c) is a cross-sectional view taken along line C in Fig. 6(a). Fig. 6(d) is an explanatory view of another example of Fig. 6(c). [Figure 7] Fig. 7(a) is a front view of part D in Fig. 6(a), and Fig. 7(b) is an exploded view of Fig. 7(a). [Figure 8] Figure 8(a) is a side view of Figure 7(a), and Figure 8(b) is an exploded view of Figure 8(a). [Figure 9] Fig. 9(a) is a front view of part E in Fig. 6(a), and Fig. 9(b) is an exploded view of Fig. 9(a). [Figure 10] Figure 10(a) is a side view of Figure 9(a), and Figure 10(b) is an exploded view of Figure 10(a). [Figure 11] Fig. 11(a) is a front view of part F in Fig. 6(a), and Fig. 11(b) is an exploded view of Fig. 11(a). [Figure 12] Figure 12(a) is a side view of a portion of Figure 11(a), and Figure 12(b) is an exploded view of Figure 12(a). [Figure 13] Figure 13(a) is a side view of another part of Figure 11(a), and Figure 13(b) is an exploded view of Figure 13(a). [Figure 14] Figure 14(a) is a front view of part G in Figure 6(a), and Figure 14(b) is an exploded view of Figure 14(a). [Figure 15] FIG. 15 is a front view of part H in FIG. 6(a). [Figure 16] FIG. 16 is a side view of FIG. [Figure 17] Figure 17(a) is a modified example of Figure 6(a), and Figure 17(b) is another example of Figure 17(a). [Figure 18] Fig. 18(a) is a cross-sectional view taken along line I in Fig. 17(a), and Fig. 18(b) is a cross-sectional view taken along line J in Fig. 17(b). DETAILED DESCRIPTION OF THE INVENTION

[0020] An embodiment of an elevator according to the present invention will be described below. In the following, when a person standing on a floor looks at the car (as shown in FIG. 2), the left side is referred to as "left," the right side as "right," the horizontal direction between left and right is referred to as the "left-right direction," and the left-right direction is indicated as X in appropriate drawings. Furthermore, when a person standing on a floor looks at the car (as shown in FIG. 2), the side closer to the person is referred to as "front," the side farther from the person is referred to as "rear" or "rear," and the horizontal direction between front and back is referred to as the "front-to-back direction," and the front-to-back direction is indicated as Y in appropriate drawings. The left-to-right direction and the front-to-back direction are two directions that intersect at right angles on a horizontal plane. Furthermore, the up-down direction is synonymous with the vertical direction and is a direction that intersects at right angles to the left-to-right direction and the front-to-back direction, respectively.

[0021] As shown in Figure 1, elevator 1 includes hoistway 2 and car 3. Hoistway 2 extends vertically within a building with multiple floors. Car 3 moves up and down within hoistway 2 by being driven by a drive mechanism, and stops at a designated floor by stopping the drive mechanism.

[0022] The car 3 is equipped with a car door device 30. The car door device 30 is equipped with a car door 31, a door support structure 32, and a door opening and closing device 35. The car door 31 moves left and right to open and close an opening (car entrance / exit) on the front of the car 3, allowing passengers to get on and off. The door support structure 32 is a structure that supports the car door 31 while enabling the car door 31 to open and close. The door opening and closing device 35 is a device for opening and closing the car door 31.

[0023] In contrast, the landing 20 on each floor includes a jamb 21 and a landing door device 22. The jamb 21 is formed on a wall surface, and the interior of the frame forms an opening of a size corresponding to the opening of the car 3. The landing door device 22 includes a landing door 23 and a door support structure 24. The landing door 23 moves left and right to open and close the opening (landing entrance / exit) in the jamb 21, allowing passengers to get on and off. The landing door 23 is normally closed by being biased by an elastic force, and is opened following the opening operation of the car door 31 of the car 3 stopped at the floor, and is closed in conjunction with the closing operation of the car door 31. The door support structure 24 is a structure that supports the landing door 23 while enabling the opening and closing operation of the landing door 23.

[0024] As shown in Fig. 2, the car door 31 includes a door panel 310 and a door hanger 311. The door panel 310 is arranged along a vertical plane and is the main part of the car door 31 that opens and closes the opening 3a of the car 3. The door hanger 311 is attached integrally with the door panel 310 at the upper end of the door panel 310. The door hanger 311 includes a pair of rollers 312, 312. The pair of rollers 312, 312 are provided at the upper end of the door hanger 311 with a gap between them in the left-right direction.

[0025] The door support structure 32 includes a door rail 33 and a threshold 34. The door rail 33 is a straight, horizontally elongated, flat, rectangular, plate-like member. The door rail 33 is provided in the horizontal direction on the upper front surface of the car 3 along the upper edge of the opening 3a of the car 3, with both ends extending laterally beyond the upper edge of the opening 3a. The rollers 312, 312 of the door hanger 311 engage with the upper edge of the door rail 33 from above and rotate, so that the car door 31 is hung from the door rail 33 in a state in which it can slide laterally along the door rail 33. The door rail 33 is a structure that supports the upper portion of the car door 31 while enabling the car door 31 to open and close. On the other hand, the threshold 34 is provided in the horizontal direction on the lower front surface of the car 3 along the lower edge of the opening 3a of the car 3, with both ends extending laterally beyond the lower edge of the opening 3a. The threshold 34 is a structure that supports the lower part of the car door 31 while allowing the car door 31 to open and close.

[0026] As shown in Figures 3 and 4, the door opening and closing device 35 includes a drive motor 350, a drive pulley 351, a driven pulley 352, and a drive belt 353. The drive motor 350 is provided at one end, either left or right, of the upper front surface of the car 3. The drive pulley 351 is provided coaxially with and integral with the drive shaft of the drive motor 350, and is directly connected to the drive motor 350. The driven pulley 352 is provided at the other end, either left or right, of the upper front surface of the car 3. The drive belt 353 is an endless belt wound around the drive pulley 351 and the driven pulley 352. The drive belt 353 is provided in the left-right direction and parallel to the door rail 33.

[0027] When the drive motor 350 is driven, the drive pulley 351 rotates, and accordingly, the drive belt 353 moves in a circular motion. As a result, the two left and right car doors 31, 31 (hatched portions) reciprocate along the door rail 33 (hatched portions) and perform opening and closing operations. One car door 31 is connected to one side of the drive belt 353. The other car door 31 is connected to the other side of the drive belt 353. As a result, the pair of car doors 31, 31 move in directions opposite to each other. In other words, the car door device 30 and the landing door device 22 are of a center-open type in which the opening 3a of the car 3 opens from the center.

[0028] Here, the connection structure between the car door 31 and the drive belt 353 will be described in detail. The door hanger 311 of the car door 31 is composed of a pair of first and second members. The pair of first and second members are plate-shaped members. The pair of first members are provided at a distance from each other in the left-right direction, and each is attached integrally to the upper end of the door panel 310. The second member connects the pair of first members. In one car door 31, the door hanger 311 has an extension portion 311a that extends upward. In the other car door 31, the door hanger 311 has an extension portion 311b that extends upward. The extension portions 311a, 311b are formed in the left or right half of the first member, divided along the center line in the left-right direction. The first member is manufactured by cutting the entire mold from a single plate material. Therefore, the extensions 311a and 311b are parts of the main body of the first member that extend and protrude upward, and are provided integrally with the main body.

[0029] As shown in Fig. 5, the upper ends of the extensions 311a and 311b are bent. The bent portions are portions that protrude rearward (or forward) and are disposed along a horizontal plane. One side of the drive belt 353 is fixed using a fixture while contacting the lower surface (or upper surface) of the bent portion of the extension 311a. The other side of the drive belt 353 is fixed using a fixture while contacting the upper surface (or lower surface) of the bent portion of the extension 311b.

[0030] The roller 312 is rotatably attached to the inner surface of the door hanger 311 (first member thereof). The roller 313 is rotatably attached to the inner surface of the door hanger 311 (second member thereof). The roller 312 contacts the upper edge of the door rail 33. The roller 313 contacts the lower edge of the door rail 33. The door rail 33 is attached to the front surface of the support frame 4 via legs 33a. The door rail 33 is provided in front of the support frame 4 and parallel to the support frame 4. The legs 33a are cylindrical members, and a plurality of them are provided at appropriate intervals in the left-right direction and attached to the front surface of the support frame 4.

[0031] In one car door 31, a switch operating body 314 is attached to the inner surface of (a first member of) the door hanger 311. The switch operating body 314 has a roller, and turns on the switch 354 when the car door 31 is in the closed state. In the other car door 31, the extension portion 311b (the bent portion of) the door hanger 311 has a detection piece 311c. The detection piece 311c is a detection piece for the limit switches 355, 356.

[0032] As shown in FIG. 6, the support frame 4 is a straight, horizontally elongated, flat, rectangular, plate-like member. The support frame 4 is provided in the horizontal direction on the upper front surface of the car 3 along the upper edge of the opening 3a of the car 3, with both ends extending laterally beyond the upper edge of the opening 3a. The support frame 4 is a member for mounting and supporting various components, which will be described later. The support frame 4 is rigid enough not to be easily deformed, and is a metal member made of, for example, iron, steel, stainless steel, or aluminum.

[0033] The support frame 4 includes a main body 40 and a forward protrusion 41. The main body 40 occupies the majority of the entire support frame 4, is straight, elongated in the left-right direction, flat, rectangular, plate-like, and is disposed along a vertical plane. The forward protrusion 41 is a portion that protrudes forward from the upper edge of the main body 40, is straight, elongated in the left-right direction, flat, rectangular, plate-like, and is disposed along a horizontal plane. The forward protrusion 41 has an upper surface 41a. The upper surface 41a is a horizontal surface. The main body 40 and the forward protrusion 41 are integrally formed. As an example, the main body 40 and the forward protrusion 41 are formed by bending the upper end of a single plate material forward.

[0034] The support frame 4 has a smaller height than conventional support frames, so that the upper edge of the support frame 4 (the upper edge of the main body 40 and the edge relating to the upper surface 41a of the forward protrusion 41; hereinafter, this also applies when referred to as the "upper edge of the support frame") is located at a height difference H lower than the top of the roller 312.

[0035] The support frame 4 is attached to the upper front surface of the car 3. As an example, the support frame 4 is attached to the upper front surface of the car 3 via a bracket 50 and an appropriate bracket 50A (FIG. 6(c)). The upper front surface of the car 3 has a recess 3b recessed in the depth direction, and the support frame 4 is disposed in front of the recess 3b. As a result, the support frame 4 faces the rear surface of the recess 3b with a gap between them, and an open space S is formed above the support frame 4. The open space S is the space between the front offset surface and the rear offset surface based on the vertical plane of the support frame 4 (main body 40 thereof). The open space S is a space for arranging various components, which will be described later. The brackets 50 are attached to both ends of the support frame 4. The bracket 50A is connected to the bracket 50 and attached to the outer surface of the car 3. As a result, the support frame 4 is fixed to the upper front surface of the car 3.

[0036] As another example, the support frame 4 is attached to the upper front surface of the car 3 via the front frame 3A of the car 3 (FIG. 6(d)). A pair of front frames 3A are provided on both sides of the car 3, and the support frame 4 is arranged across the pair of front frames 3A, 3A. As a result, the support frame 4 faces the front surface of the car 3 with a gap between them, and a similar open space S is formed above the support frame 4. The support frame 4 is attached to the pair of front frames 3A, 3A at both ends. As a result, the support frame 4 is fixed to the upper front surface of the car 3.

[0037] The various components of the door opening and closing device 35, such as the drive motor 350 (and drive pulley 351), driven pulley 352, switch 354, and limit switches 355 and 356, are attached to appropriate locations on the support frame 4. A control box 37, another component, is also attached to an appropriate location on the support frame 4. These various components are attached to the support frame 4 via brackets. The brackets are provided at multiple locations on the upper edge of the support frame 4 and extend upward, backward, or forward from the upper edge of the support frame 4. This allows the various components to be arranged in the open space S. The brackets supporting the switch 354 and limit switches 355 and 356 are positioned between the bracket supporting the drive motor 350 (and drive pulley 351) and the bracket supporting the driven pulley 352, but are naturally arranged so as not to interfere with the drive belt 353. The brackets are made of a metal having sufficient rigidity to resist deformation, such as iron, steel, stainless steel, or aluminum.

[0038] As shown in Figures 7 and 8, a bracket 51 that supports the drive motor 350 and the drive pulley 351 is attached to the rear surface (back surface) of the support frame 4 (the main body 40 thereof). The bracket 51 is detachably attached to the support frame 4 (the main body 40 thereof) using a fastener 61. The fastener 61 is a bolt and nut fastener. The fastener 61 is a combination of two bolts 610, 610 and one plate nut (two nuts welded to a plate) 611 (including appropriate washers, spring washers, etc., as necessary). The support frame 4 (the main body 40 thereof) (the upper end portion) has a round hole as an insertion hole for the shank of the bolt 610. The bracket 51 (the lower end portion) has a notched hole 51a that is open at the lower edge as an insertion hole for the shank of the bolt 610. The bolt 610 is inserted into the insertion holes of the support frame 4 and the bracket 51 from the front of the support frame 4 and is screwed into the plate nut 611. This allows the fixing device 61 to be fixed and released by rotating it from the front of the support frame 4. The insertion hole of the bracket 51 is a notched hole 51a. This allows the bracket 51 to be removed by pulling it up with the fixing device 61 loosened.

[0039] Bracket 51 is formed by bending a plate material. The bent portion is a portion that protrudes rearward and is disposed along a horizontal plane. The bent portion has an upper surface 51b. Upper surface 51b is a surface that is visible from the front of support frame 4 and is a horizontal plane. Bracket 51 is attached to support frame 4 so that upper surface 51b is close to upper surface 41a of (the forward protruding portion 41 of) support frame 4 and is at the same height (flush) as upper surface 41a.

[0040] The drive motor 350 has a base surface (lower surface) 350a, and is attached to the bracket 51 so that the base surface 350a contacts the upper edge of the support frame 4. The drive motor 350 is attached to the bracket 51 so that the base surface 350a contacts the upper surface 41a of the support frame 4 and the upper surface 51b of the bracket 51 across the bracket 51.

[0041] The drive motor 350 is attached to the bracket 51 so that its position can be adjusted in the front-rear direction (by the gap between the bolt shaft and the insertion hole). The drive motor 350 is attached to the bracket 51 so that the tip of the base surface 350a coincides with the tip of the upper surface 41a of the support frame 4.

[0042] As shown in Figures 9 and 10, the bracket 52 supporting the driven pulley 352 is attached to the rear surface of the support frame 4 (the main body 40 thereof). The bracket 52 is detachably attached to the support frame 4 (the main body 40 thereof) using a fastener 62. The fastener 62 is a bolt and nut fastener. The fastener 62 is a combination of two square root bolts 620, 620 and two nuts 621, 621 (including appropriate washers, spring washers, etc., as necessary). The (upper end of the) support frame 4 (the main body 40 thereof) has a square hole 42a as an insertion hole for the shank of the square root bolt 620. The (lower end of the) bracket 52 has a square hole 52a as an insertion hole for the shank of the square root bolt 620. The square root bolt 620 is inserted into the insertion hole of the bracket 52 and the support frame 4 from the rear of the support frame 4, and a nut 621 is screwed into it from the front of the support frame 4. As a result, the fixing device 62 can be fixed and released by rotating it from the front of the support frame 4. The square root portion of the square root bolt 620 fits into the square holes 42a, 52a. This restricts movement and rotation of the bracket 52 relative to the support frame 4 in a vertical plane.

[0043] The bracket 52 is formed using a plate material. The driven pulley 352 is rotatably attached to the bracket 52. Although not shown, the driven pulley 352 is attached to the bracket 52 so that its position can be adjusted in the left-right direction. By adjusting the left-right position of the driven pulley 352, the tension of the drive belt 353 can be adjusted.

[0044] As shown in Figures 11 and 12, a bracket 54 that supports the switch 354 is attached to the rear surface of the support frame 4 (the main body 40 thereof). The bracket 54 is detachably attached to the support frame 4 (the main body 40 thereof) using a fastener 64. The fastener 64 is a bolt and nut fastener. The fastener 64 is a combination of two bolts 640, 640 and one plate nut 641 (including appropriate washers, spring washers, etc., as necessary). The support frame 4 (the main body 40 thereof) (the upper end) has an elongated hole 44a as an insertion hole for the shaft of the bolt 640. The bracket 54 (the lower end) has an elongated hole 54a as an insertion hole for the shaft of the bolt 640. The elongated hole 44a is an elongated hole that is long in either the left-right direction or the up-down direction (up-down direction in the illustrated example). The elongated hole 54a is an elongated hole that is long in either the left-right direction or the up-down direction (left-right direction in the illustrated example). The bolt 640 is inserted into the insertion hole of the support frame 4 and the bracket 54 from the front of the support frame 4 and is screwed into the plate nut 641. This allows the fixing device 64 to be fixed and released by rotating the support frame 4 from the front. The insertion holes of the support frame 4 and the bracket 54 are elongated holes 44a, 54a that are long in directions perpendicular to each other (left-right direction and up-down direction). This allows the position of the bracket 54 relative to the support frame 4 to be adjusted in the left-right direction and up-down direction.

[0045] The bracket 54 is formed by bending a plate material at multiple locations. The bracket 54 is formed so that the switch 354 is disposed behind the drive belt 353. The bent portion formed in the middle of the bracket 54 is a portion that protrudes rearward and is disposed along a horizontal plane. The bent portion has an upper surface 54b. The upper surface 54b is a surface that is visible from the front of the support frame 4 and is a horizontal plane. The bracket 54 is attached to the support frame 4 so that the upper surface 54b is close to the upper surface 41a of the support frame 4 (the forward protruding portion 41) and is at the same height (flush) as the upper surface 41a.

[0046] The switch 354 is attached to the bracket 54 so that its position can be adjusted in the front-to-rear and left-to-right directions (by the amount of the gap between the bolt shaft and the insertion hole). The vertical position of the switch 354 is adjusted by adjusting the vertical position of the bracket 54 so that the upper surface 54b of the bracket 54 is at the same height as the upper surface 41a of the support frame 4.

[0047] Switch 354 is a switch that detects whether car door 31 is in the closed position. Switch 354 includes switch piece 354a. Switch piece 354a is provided to be swingable on the underside of the main body of switch 354, and when car door 31 is in the closed state, switch operating body 314 of car door 31 abuts against switch piece 354a, thereby being pushed up and turning switch 354 ON. Switch 354 is in the form of an interlock switch that constitutes part of the safety circuit of the drive device of elevator 1.

[0048] As shown in Figures 11 and 13, a bracket 55 supporting the limit switch 355 is attached to the rear surface of the support frame 4 (the main body 40 thereof). The bracket 55 is detachably attached to the support frame 4 (the main body 40 thereof) using a fastener 65. The fastener 65 is a bolt and nut fastener. The fastener 65 is a combination of two bolts 650, 650 and one plate nut 651 (including appropriate washers, spring washers, etc., as necessary). The support frame 4 (the main body 40 thereof) (the upper end portion) has an elongated hole 45a as an insertion hole for the shaft portion of the bolt 650. The bracket 55 (the lower end portion) has an elongated hole 55a as an insertion hole for the shaft portion of the bolt 650. The elongated hole 45a is an elongated hole that is long in either the left-right direction or the up-down direction (up-down direction in the illustrated example). The elongated hole 55a is an elongated hole that is long in either the left-right direction or the up-down direction (left-right direction in the illustrated example). The bolt 650 is inserted into the insertion hole of the support frame 4 and the bracket 55 from the front of the support frame 4 and is screwed into the plate nut 651. This allows the fixing device 65 to be fixed and released by rotating the support frame 4 from the front. The insertion holes of the support frame 4 and the bracket 55 are elongated holes 45a, 55a that are long in directions perpendicular to each other (left-right direction and up-down direction). This allows the position of the bracket 55 relative to the support frame 4 to be adjusted in the left-right direction and up-down direction.

[0049] Bracket 55 is formed by bending a plate material at multiple locations. The bent portion formed in the middle of bracket 55 is a portion that protrudes rearward and is disposed along a horizontal plane. The bent portion has an upper surface 55b. Upper surface 55b is a surface that is visible from the front of support frame 4 and is a horizontal plane. Bracket 55 is attached to support frame 4 so that upper surface 55b is close to upper surface 41a of support frame 4 (forward protruding portion 41) and is at the same height (flush) as upper surface 41a.

[0050] The limit switch 355 is attached to the bracket 55 so that its position can be adjusted in the front-to-rear and left-to-right directions (by the amount of the gap between the shaft of a bolt (not shown) and the insertion hole). The vertical position of the limit switch 355 is adjusted by adjusting the vertical position of the bracket 55 so that the upper surface 55b of the bracket 55 is at the same height as the upper surface 41a of the support frame 4.

[0051] The limit switch 355 is a switch that detects whether the car door 31 is in the closed position. As an example, the limit switch 355 is a proximity sensor. Note that the role of the limit switch 355 can also be performed by the switch 354, so it is possible to eliminate the limit switch 355.

[0052] As shown in Figure 14, limit switch 356 is a switch that detects when car door 31 is in the open position. The limit switch 356, the bracket 56 that supports limit switch 356, the fixture 66, and the fixing structure are substantially the same as, but arranged in a line-symmetrical relationship with, the limit switch 355, the bracket 55, the fixture 65, and the fixing structure shown in Figures 11 and 13. Therefore, a description of the configuration will be omitted as it is the same.

[0053] As shown in Figures 15 and 16, a bracket 57 that supports the control box 37 is attached to the rear surface of (the main body 40 of) the support frame 4. The bracket 57 is detachably attached to (the main body 40 of) the support frame 4 using a fastener 67. The fastener 67 is two bolts 670, 670 (including appropriate washers, spring washers, etc., as necessary). The (upper end of) the support frame 4 (the main body 40) has a round hole as an insertion hole for the shaft of the bolt 670. The (lower end of) the bracket 57 has a screw hole 57a for the bolt 670. The bolt 670 is inserted into the insertion hole of the support frame 4 from the front of the support frame 4 and screws into the screw hole 57a. As a result, the fastener 67 can be fixed and released by rotating the support frame 4 from the front.

[0054] The control box 37 houses a sub-controller for the control unit (main control unit) of the entire elevator 1. Alternatively, the control box 37 houses a relay unit for the control unit of the entire elevator 1. The control box 37 may not be provided on the support frame 4.

[0055] As shown in Figures 17 and 18, the support frame 4 is provided with a cover 38. The cover 38 covers part or all of the open space S in the left-right direction from the front, rear, and above. As a result, the switch 354, the limit switches 355 and 356, and the driven pulley 352 are covered by the cover 38 (Figure 17(a)). Alternatively, the drive motor 350, the drive pulley 351, the switch 354, the limit switches 355 and 356, and the driven pulley 352 are covered by the cover 38 (Figure 17(b)). In either case, the upper part of the car door 31 (the upper part of the door hanger 311) and the drive belt 353 are also covered by the cover 38.

[0056] The bracket 58, fixture, and fixing structure that supports the cover 38 are the same as the bracket 57, fixture 67, and fixing structure shown in Figures 15 and 16. Therefore, a description of the structure will be omitted as it is the same.

[0057] 3 and 4, the car door device 30 includes a landing door engaging device 39. The landing door engaging device 39 is a device that, when the car door 31 is opened (and closed), engages with an engaged body (a roller, as an example) 230 of the landing door 23, thereby causing the landing door 23 to open (and close) in conjunction with the opening (and closing) of the car door 31. The landing door engaging device 39 includes, as components on the car door 31 side, a first engaging body 390, a second engaging body 391, and a link 392, and includes, as a component on the entrance / exit side of the car 31, a cam 393.

[0058] The first engagement body 390 is fixed. The second engagement body 391 is provided so as to be movable between a first state (FIG. 3) and a second state (FIG. 4) in which the second engagement body 391 is closer to the first engagement body 390 than in the first state and the distance (width) between the first engagement body 390 and the link 392 is narrower. The link 392 is operatively connected to the second engagement body 391 at one end. As shown in FIG. 3, when the car door 31 is closed, the other end (roller) of the link 392 abuts against the cam 393, thereby displacing the second engagement body 391 from the second state to the first state. Then, as shown in FIG. 4, when the car door 31 opens and the other end of the link 392 moves away from the cam 393, the second engagement body 391 is displaced from the first state to the second state by its own weight.

[0059] As shown in FIG. 11, the cam 393 is attached to the front surface of the support frame 4 via a bracket 394 at a central position in the left-right direction of the support frame 4 .

[0060] The configuration of the elevator 1 according to this embodiment is as described above. According to the elevator 1 according to this embodiment, the support frame 4 is provided with brackets 51 to 57 at multiple locations on its upper edge, and supports various components, such as the drive motor 350 (and drive pulley 351), driven pulley 352, switch 354, limit switches 355 and 356, and control box 37, via the brackets 51 to 57. This eliminates the need to ensure an area in front of the support frame 4 for arranging these various components. This allows the height dimension of the support frame 4 to be reduced, thereby reducing the weight of the support frame 4, which in turn reduces the manufacturing cost of the car 3, improves the efficiency of installation work, and reduces operating costs.

[0061] Furthermore, in the elevator 1 according to this embodiment, the drive pulley 351 is directly connected to the drive motor 350, and the drive motor 350 is supported on the support frame 4 via the bracket 51. The drive motor 350 has a base surface 350a, and is attached to the bracket 51 so that the base surface 350a is in contact with the upper edge of the support frame 4. As a result, in a system in which the drive belt 353 is directly driven by the drive motor 350 (direct drive system), the height position of the drive belt 353 can be brought closer to the rollers 312 of the car door 31, and it is possible to suppress the application of an unbalanced load (unbalanced torque) to the car door 31 due to driving. This improves the stability of the car door 31 in its left-right movement, allowing the car door 31 to open and close smoothly and quietly.

[0062] Furthermore, in the elevator 1 according to this embodiment, the upper edge of the support frame 4 is positioned lower than the top of the rollers 312. This allows the height position of the drive belt 353 to be closer to the rollers 312, and makes it possible to further suppress the application of an unbalanced load (unbalanced torque) to the car door 31 due to driving. This further improves the stability of the car door 31 in its left-right movement, allowing the car door 31 to open and close more smoothly and quietly. Moreover, the height dimension of the support frame 4 can be made smaller, making it lighter.

[0063] Furthermore, in the elevator 1 according to this embodiment, the support frame 4 is a member that is long in the left-right direction and is arranged along a vertical plane, and various components are arranged above the support frame 4 in an open space S between a front offset surface and a rear offset surface that are based on the vertical plane of the support frame 4. This allows the area above the support frame 4 to be neatly configured.

[0064] Furthermore, the elevator 1 according to this embodiment is provided with a cover 38 that covers part or all of the open space S from the front, rear, and above. This prevents dust and other particles from accumulating on the various components. Moreover, the top of the support frame 4 is neatly configured, allowing the cover 38 to be made compact.

[0065] Furthermore, in the elevator 1 according to this embodiment, the support frame 4 is a member that is long in the left-right direction and includes a main body 40 and a forward protruding portion 41 that protrudes forward from the upper edge of the main body 40. This allows high rigidity to be obtained even with a downsized support frame 4. Furthermore, since there is no protruding portion toward the rear, the back surface of the support frame 4 is flat. This allows for easy attachment to the structure of the car 3.

[0066] Furthermore, according to the elevator 1 of this embodiment, the brackets 51 to 58 are attached to the rear surface of the main body 40 of the support frame 4. This allows the front surface of the support frame 4 to be configured neatly.

[0067] Furthermore, in the elevator 1 according to this embodiment, the bracket 51 supporting the drive motor 350 has a top surface 51b on a portion thereof and is attached to the support frame 4 so that the top surface 51b is at the same height as the top surface 41a of the forward protrusion 41 of the support frame 4. The drive motor 350 has a base surface 350a and is attached to the bracket 51 so that the base surface 350a is in contact with the top surface 41a of the forward protrusion 41 and the top surface 51b of the bracket 51 across the top surface 41a of the forward protrusion 41. As a result, the drive motor 350 is constrained by the two top surfaces 41a, 51b in the direction of rotation about the drive shaft. Therefore, even if a rotational torque is generated in the drive motor 350 as the drive motor 350 is driven, it is possible to prevent the drive motor 350 from shifting in position in the direction of rotation.

[0068] Furthermore, in the elevator 1 according to this embodiment, the drive motor 350 is attached to the bracket 51 so that the leading edge of the base surface 350a coincides with the leading edge of the upper surface 41a of the forward protrusion 41 of the support frame 4. That is, when attaching the drive motor 350, the leading edge of the base surface 350a and the leading edge of the upper surface 41a are used as references for positioning the drive motor 350 in the front-rear direction. This improves the workability of attaching the drive motor 350.

[0069] Furthermore, in the elevator 1 according to this embodiment, the brackets 51, 54 to 56 that support the drive motor 350, the switch 354, and the limit switches 355, 356 have upper surfaces 51b, 54b to 56b in part, and are attached to the support frame 4 so that the upper surfaces 51b, 54b to 56b are at the same height as the upper surface 41a of the forward protrusion 41 of the support frame 4. In other words, when attaching the brackets 51, 54 to 56, the upper surfaces 41a and 51b, 54b to 56b are used as references for positioning the brackets 51, 54 to 56 in the up-down direction. This improves the workability of the attachment work.

[0070] Furthermore, in the elevator 1 according to this embodiment, the brackets 51 to 58 are attached to the support frame 4 using fasteners 61 to 68 that can be fixed and unlocked by rotating them from the front. This improves the workability of repair, replacement, and maintenance work when it becomes necessary to repair or replace various components after the elevator 1 has been constructed.

[0071] Furthermore, in the elevator 1 according to this embodiment, the fixture 61 of the bracket 51 supporting the drive motor 350 is a bolt and nut fastener, and the bracket 51 has a notched hole 51a that is open at the lower edge and serves as an insertion hole for the shaft of the bolt 610. This allows the drive motor 350 and the bracket 51 to be removed by pulling them upward with the fixture 61 loosened. This improves the workability of installation and removal operations.

[0072] Furthermore, in the elevator 1 according to this embodiment, the fixing device 62 of the bracket 52 supporting the driven pulley 352 is a fastener consisting of a square root bolt and nut, and the support frame 4 and the bracket 52 have square holes 42a, 52a as insertion holes for the shank of the square root bolt 620, and the square root portion of the square root bolt 620 fits into the square holes 42a, 52a. Therefore, even if a rotational torque is generated in the bracket 52 supporting the driven pulley 352 as the drive motor 350 is driven, it is possible to prevent the bracket 52 from shifting in position in the rotational direction.

[0073] Furthermore, in the elevator 1 according to this embodiment, the fixing devices 64-66 of the brackets 54-56 supporting the switch 354 and the limit switches 355, 356 are bolt and nut fasteners, the support frame 4 has elongated holes 44a-46a that are long in either the left-right direction or the up-down direction as insertion holes for the shafts of the bolts 640-660, and the brackets 54-56 have elongated holes 54a-56a that are long in the other direction of either the left-right direction or the up-down direction as insertion holes for the shafts of the bolts 640-660. Therefore, the left-right and up-down positions of the brackets 54-56, and consequently the left-right and up-down positions of the switch 354 and the limit switches 355, 356, can be adjusted or fine-tuned.

[0074] Furthermore, in the elevator 1 according to this embodiment, the door hanger 311 of the car door 31 includes extensions 311a and 311b extending upward, and the car door 31 is connected to the drive belt 353 at the extensions 311a and 311b. This reduces the number of parts and reduces manufacturing costs. As described above, the height position of the drive belt 353 is closer to the door hanger 311, so the extension length of the extensions 311a and 311b can be shortened. This eliminates the need for measures such as increasing the thickness of the material to increase the rigidity of the extensions 311a and 311b, and allows the car door 31 to be made lighter.

[0075] Furthermore, in the elevator 1 according to this embodiment, the extensions 311a and 311b have bent portions that protrude rearward or forward, and the drive belt 353 is fixed using a fastener while contacting the lower or upper surface of the bent portion. This allows for a simple connection structure between the car door 31 and the drive belt 353.

[0076] Furthermore, according to the elevator 1 of this embodiment, the door hanger 311 includes a pair of first members spaced apart in the left-right direction, and the extensions 311, 311b are formed in the left or right half of one of the first members, separated by a center line in the left-right direction. This allows two first members to be produced from one material, improving yield.

[0077] Furthermore, according to the elevator 1 according to this embodiment, the extension 311b includes the detection piece 311c for the limit switches 355 and 356. This reduces the number of parts and reduces manufacturing costs.

[0078] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the present invention.

[0079] In the above embodiment, the door devices 30, 22 are of a center-opening type (2CO) with one door on each side. However, the present invention is not limited to this. It goes without saying that the present invention can also be applied to a side-opening type (2S) door device with two doors, a center-opening type (4CO) door device with two doors on each side, and a side-opening type (1S) door device with one door.

[0080] In the above embodiment, the door rail 33 is provided separately from the support frame 4 and attached to the front surface of the support frame 4 via the legs 33a. However, the present invention is not limited to this. The door rail may be formed by appropriately bending a plate material of the support frame and provided integrally with the support frame.

[0081] In the above embodiment, the first pulley is the driving pulley 351 and the second pulley 352 is the driven pulley. However, the present invention is not limited to this. The first pulley may be a speed reduction pulley to which rotation is transmitted from the driving motor via a speed reduction belt.

[0082] Furthermore, as long as there is no physical interference, it is naturally possible to apply the technical elements described above to other configurations, to replace the technical elements described above with other configurations, to combine the technical elements described above, etc., and this is naturally intended by the present invention. [Explanation of symbols]

[0083] 1... elevator, 2... hoistway, 20... landing, 21... three-sided jamb, 22... landing door device, 23... landing door, 230... engaged body (roller), 24... door support structure, 3...cage, 3a...opening, 3b...recess, 3A...front frame, 30...car door device, 31...car door, 310...door panel, 311...door hanger, 311a, 311b...extension portion, 311c...detection piece, 312...roller, 313...roller, 314...switch operating body, 32...door support structure, 33...door rail, 33a...leg, 34...sill, 35...door opening and closing device, 350... drive motor, 350a... base surface, 351... drive pulley, 352...Driven pulley, 353...Drive belt, 354...switch, 354a...switch piece, 355...Limit switch, 356...Limit switch, 37...control box, 38...cover, 39...landing door engaging device, 390...first engaging body, 391...second engaging body, 392...link, 393...cam, 394...bracket, 4...support frame, 40...main body, 41...forward protrusion, 41a...upper surface, 42a...rectangular hole, 44a...long hole, 45a...long hole, 46a...long hole, 50...bracket, 50A...bracket, 51...bracket, 51a...notched hole, 51b...upper surface, 52...bracket, 52a...square hole, 54...bracket, 54a...long hole, 54b...upper surface, 55...bracket, 55a...long hole, 55b...upper surface, 56...bracket, 56a...long hole, 56b...upper surface, 57...bracket, 57a...screw hole, 58...bracket, 61...Fixing tool, 610...Bolt, 611...Plate nut, 62...Fixing tool, 620...Square root bolt, 621...Nut, 64...Fixing fixture, 640...Bolt, 641...Plate nut, 65...Fixing fixture, 650...Bolt, 651...Plate nut, 66...Fixing fixture, 660...Bolt, 661...Plate nut, 67...Fixtures, 670...Bolts, H...height difference, S...open space, X...left / right direction, Y...front / back direction

Claims

1. a door rail that supports the car door so that the car door can slide left and right; a first pulley and a second pulley provided above the door rail and spaced apart in the left-right direction, around which a drive belt operatively connected to the car door is wound; a door position detection unit that detects that the car door is in a predetermined position; A support frame is provided with a door rail on the front surface, brackets at a plurality of locations on the upper edge, and supports the first pulley, the second pulley, and the door position detector via the brackets. Elevator car.

2. a drive motor directly connected to the first pulley; The drive motor is supported on the support frame via a bracket.

2. The elevator car of claim 1.

3. the car door is provided with a roller that rotates by engaging with an upper edge of the door rail from above; The upper edge of the support frame is positioned lower than the top of the roller An elevator car according to claim 1 or 2.

4. The support frame is a member that is long in the left-right direction and is arranged along a vertical plane. The first pulley, the second pulley, and the door position detector are disposed above the support frame in an open space between a front offset surface and a rear offset surface, with the vertical plane of the support frame as a reference. An elevator car according to claim 1 or 2.

5. Equipped with a cover that covers part or all of the open space from the front, back, and above 5. The elevator car of claim 4.

6. The support frame includes a main body portion and a forward protrusion portion that protrudes forward from at least a portion of an upper edge of the main body portion; a bracket supporting the drive motor has an upper surface at a portion thereof, and is attached to the support frame so that the upper surface is at the same height as an upper surface of the forward protrusion; The drive motor has a base surface and is attached to the bracket so that the base surface is in contact with the upper surface of the forward protrusion and the upper surface of the bracket across the base surface.

3. The elevator car of claim 2.

7. The drive motor is attached to the bracket so that the tip of the base surface coincides with the tip of the upper surface of the forward protrusion.

7. The elevator car of claim 6.

8. The support frame includes a main body portion and a forward protrusion portion that protrudes forward from at least a portion of an upper edge of the main body portion; The bracket has an upper surface on one side and is attached to the support frame so that the upper surface is at the same height as the upper surface of the forward protrusion. An elevator car according to claim 1 or 2.

9. The bracket is attached to the support frame using a fixture that can be locked and unlocked by rotating it from the front of the support frame. An elevator car according to claim 1 or 2.

10. the car door includes a door panel and a door hanger attached to an upper end of the door panel; The door hanger includes an extension portion that projects upward from a portion of the main body, The car door is connected to the drive belt at the extension. An elevator car according to claim 1 or 2.

11. The extension portion is provided with a detection piece for the door position detection portion.

11. The elevator car of claim 10.

12. The elevator comprises the elevator car according to claim 1 or 2. Elevator.

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