Additional handrails and elevators

Abstract

To provide an additional handrail and an elevator capable of facilitating mounting work to an existing handrail without performing processing work with respect to the existing handrail.SOLUTION: An additional handrail 20 includes a lower additional support column 31, an upper additional support column 32, an additional sash bar 22, a first fixed part, and a second fixed part. The lower additional support column 31 is arranged between an upper sash bar 7 and an intermediate sash bar 8 of a handrail 4. The upper additional support column 32 is rotatably supported by the lower additional support column 31. The additional sash bar 22 is provided on an end part opposite to the lower additional support column 31 in the upper additional support column 32. The first fixed part is provided on an end part on the intermediate sash bar 8 side in the lower additional support column 31 and detachably engaged with the intermediate sash bar 8. The second fixed part is provided on an end part on the upper sash bar 7 side in the lower additional support column 31 and detachably fitted to the upper sash bar 7.SELECTED DRAWING: Figure 10

Description

[Technical Field]

[0001] The present invention relates to an additional handrail and an elevator. [Background technology]

[0002] Traditionally, when performing elevator maintenance and inspection or work, workers have had to climb onto the ceiling above the car as it ascends and descends within the hoistway. For this reason, handrails have been installed on the ceiling of the car to ensure the safety of workers. In recent years, there has also been a demand for higher handrail heights to enhance safety when working above the car.

[0003] An example of a handrail with adjustable height is described in Patent Document 1. Patent Document 1 describes a structure that includes a car that moves up and down in a hoistway and a handrail installed along the upper outer periphery of the car, with the handrail being configured to be adjustable in height. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-143125 Summary of the Invention [Problem to be solved by the invention]

[0005] Furthermore, in recent years, there has been a demand for retrofitting new handrails to change the height of existing handrails. However, the technology described in Patent Document 1 is related to existing handrails. Therefore, when using the technology described in Patent Document 1 to change the height of an existing handrail, processing work such as adding new mounting holes is required, making the installation work very complicated.

[0006] In consideration of the above problems, the present invention provides an additional handrail and elevator that can be easily attached to an existing handrail without requiring any processing work on the existing handrail. [Means for solving the problem]

[0007] To solve the above problems and achieve the present object, the additional handrail is removably attached to a handrail installed at the top of the elevator car. The additional handrail comprises a lower additional support, an upper additional support, an additional rail, a first fixing portion, and a second fixing portion. The lower additional support is arranged between the upper rail and the middle rail of the handrail. The upper additional support is rotatably supported by the lower additional support. The additional rail is provided at the end of the upper additional support opposite the lower additional support. The first fixing portion is provided at the end of the lower additional support facing the middle rail and removably engages with the middle rail. The second fixing portion is provided at the end of the lower additional support facing the upper rail and removably fits with the upper rail.

[0008] The elevator is also provided with the above-mentioned additional handrails that can be detachably attached. [Effects of the Invention]

[0009] According to the additional handrail and elevator having the above configuration, the installation work can be easily performed on the existing handrail without performing any processing work on the existing handrail. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a perspective view showing the upper part of an elevator car according to a first embodiment. FIG. [Figure 2] This is a side view showing the existing handrail in a folded state. [Figure 3] FIG. 3 is a side view showing the state in which an additional handrail is attached to the existing handrail shown in FIG. 2. [Figure 4] 2 is an enlarged perspective view of an area A shown in FIG. 1. FIG. [Figure 5]This is a perspective view showing the existing handrail in an erected state. [Figure 6] 6A and 6B are enlarged perspective views of an area B shown in FIG. 5, and are diagrams showing the operation of rotating the additional support pole of the additional handrail. [Figure 7] This is a perspective view showing the additional handrail in an upright position. [Figure 8] 8A and 8B are enlarged perspective views of an area C shown in FIG. 7, and are views showing a state in which an additional support is fixed. [Figure 9] 9A and 9B are diagrams showing the state in which the upper additional support column and the upper rail are fitted together. [Figure 10] This is an oblique view showing the additional rear rail of the additional handrail deployed. [Figure 11] FIG. 11 is an enlarged perspective view of an area D in FIG. [Figure 12] FIG. 10 is a perspective view showing the upper part of an elevator car according to a second embodiment. [Figure 13] 13A and 13B are enlarged views of an area E in FIG. 12, and are views showing a method of connecting an additional rear rail of an additional handrail. DETAILED DESCRIPTION OF THE INVENTION

[0011] An additional handrail and an elevator according to an embodiment will be described below with reference to Figures 1 to 13. Note that common members in each figure are given the same reference numerals.

[0012] 1. First embodiment 1-1. Handrail and elevator configuration First, the configuration of an additional handrail and an elevator according to an embodiment (hereinafter referred to as "this example") will be described with reference to Figs. 1 to 11. Fig. 1 is a perspective view showing the upper part of the elevator car of this example, Fig. 2 is a side view showing the existing handrail in a folded state, and Fig. 5 is a perspective view showing the existing handrail in an erected state.

[0013] The elevator 1 of this example has a car 2 that moves up and down in a hoistway formed in a building structure and carries people and luggage. As shown in Fig. 1, a handrail 4 for use in overhead work is installed on the ceiling 3, which is the upper part of the car 2 in the vertical direction. Note that Fig. 1 shows the handrail 4 in a folded state.

[0014] The handrail 4 has a support portion 5, a plurality of support posts 6, an upper rail 7, and a middle rail 8. The handrail 4 also has a first rear rail 11, a second rear rail 12, and a front rail 14 (see FIG. 5).

[0015] The support parts 5 are arranged at the four corners of the ceiling part 3 of the car 2. A roughly cylindrical support pillar 6 is attached to the support part 5. The support part 5 rotatably supports the support pillar 6. When the handrail 4 is folded, as shown in Figures 1 and 2, the support pillar 6 leans toward the center of the ceiling part 3 and is arranged roughly parallel to the plane of the ceiling part 3. When the support pillar 6 rotates from the inside to the outside of the ceiling part 3 around the support part 5, the support pillar 6 stands upright from the ceiling part 3 facing upward in the vertical direction (see Figure 5).

[0016] An upper crosspiece 7 is installed at the top end of the support pillar 6 in the vertical direction. The upper crosspiece 7 is arranged parallel to the outer periphery of the ceiling portion 3 of the car 2, and connects two adjacent support pillars 6. In addition, a middle crosspiece 8 is installed at the middle portion of the support pillar 6 in the vertical direction. Like the upper crosspiece 7, the middle crosspiece 8 is arranged parallel to the outer periphery of the ceiling portion 3 of the car 2, and connects two adjacent support pillars 6. The upper crosspiece 7 and middle crosspiece 8 are formed in a roughly quadrangular prism shape. Here, the inside of the horizontal space surrounded by the upper crosspiece 7 and middle crosspiece 8, i.e., the inside of the handrail 4, is referred to as the inside of the handrail 4, and the outside of the horizontal space surrounded by the upper crosspiece 7 and middle crosspiece 8, i.e., the outside of the outer periphery of the ceiling portion 3 of the car 2, is referred to as the outside of the handrail 4.

[0017] Although an example has been described in which the support post 6 is formed in a generally cylindrical shape and the upper crosspiece 7 and middle crosspiece 8 are formed in a generally square prism shape, the present invention is not limited to this. For example, the support post 6 may be formed in a generally square prism shape and the upper crosspiece 7 and middle crosspiece 8 may be formed in a generally cylindrical shape. Furthermore, an example has been described in which two crosspieces, the upper crosspiece 7 and the middle crosspiece 8, are provided on the handrail 4, but the present invention is not limited to this and three or more crosspieces may be provided.

[0018] 1 and 2, when the handrail 4 is folded, the support pillar 6 leans toward the center of the ceiling 3 and is disposed approximately parallel to the plane of the ceiling 3. When the support pillar 6 rotates from the inside to the outside of the ceiling 3 around the support part 5, the support pillar 6 stands upright from the ceiling 3 facing upward in the vertical direction (see FIG. 5).

[0019] 5, a front rail 14 is attached to the end of the upper rail 7 at the front in the longitudinal direction of the car 1. A first rear rail 11 is attached to the end of the upper rail 7 at the rear in the longitudinal direction of the car 1, and a second rear rail 12 is attached to the end of the middle rail 8. The first rear rail 11 and the second rear rail 12 are connected by a connecting rail 9. The first rear rail 11 and the second rear rail 12 may be attached to the upper rail 7 and the middle rail 8 so as to be rotatable, or may be attached to the upper rail 7 and the middle rail 8 so as to be detachable.

[0020] An additional handrail 20 is detachably attached to the handrail 4 having the above-described configuration.

[0021] 1-2. Example of additional handrail configuration Next, the additional handrail 20 will be described. As shown in Figure 1, the additional handrail 20 has multiple additional supports 21, additional crosspieces 22, a first fixing portion 23, a second fixing portion 33 (see Figure 6), a rotating shaft 25, and an additional rear crosspiece 26 (see Figure 10).

[0022] As shown in Figures 1 and 3, the additional support pillar 21 is detachably attached between the upper rail 7 and the middle rail 8 of the handrail 4. In addition, an additional rail 22 is provided at the upper end of the additional support pillar 21 in the vertical direction. The additional rail 22 is arranged approximately parallel to the upper rail 7 and the middle rail 8, and connects two adjacent additional support pillars 21. The additional support pillar 21, additional rail 22 and additional rear rail 26 are formed by bending a flat plate-shaped member.

[0023] In addition, the additional crosspiece 22 is provided with a plurality of notches 22a (see FIG. 4). The notches 22a are provided in positions that will cause interference with the support posts 6 and the additional support posts 21 when the additional handrail 20 and the handrail 4 are folded. This prevents the additional handrail 22 from interfering with the support posts 6 and the additional support posts 21 when the additional handrail 20 and the handrail 4 are folded. Also, as shown in FIG. 3, when the additional handrail 20 is folded, it can be contained within a horizontal projection plane when the handrail 4 is viewed from the front and rear. As a result, when the additional handrail 20 is attached to the handrail 4, it is possible to prevent the additional handrail 20 from interfering with other equipment provided on the ceiling 3 of the car 2.

[0024] 4 is an enlarged perspective view of an area A shown in FIG. 1. FIGS. 6A and 6B are enlarged perspective views of an area B shown in FIG. 5. As shown in Figures 1, 3, and 4, a first fixing portion 23 is provided at the lower end portion in the vertical direction of the lower additional support 31 of the additional support 21 (described later), i.e., the end portion on the side of the middle rail 8. The first fixing portion 23 is formed of a jack bolt. The first fixing portion 23 also has an engaging portion 23a that detachably engages with the middle rail 8 of the handrail 4. The jack bolt is disposed between the lower additional support 31 and the engaging portion 23a.

[0025] As shown in FIG. 6A, a second fixing portion 33 is provided at the top end of the lower additional support 31 of the additional support 21 (described later), i.e., at the end on the upper rail 7 side. The second fixing portion 33 is detachably fitted to the lower end of the upper rail 7 of the handrail 4. As shown in FIG. 4, by tightening the first fixing portion 23, which is a jack bolt, a force is applied in a direction that moves the engaging portion 23a of the first fixing portion 23 and the second fixing portion 33 away from each other. This allows the lower additional support 31 of the additional support 21 to be firmly held between the upper rail 7 and the middle rail 8. Furthermore, the additional handrail 20 can be attached without drilling mounting holes in the existing handrail 4, such as the upper rail 7, middle rail 8, or support 6. As a result, the additional handrail 20 can be easily attached to the existing handrail 4 without any processing work.

[0026] 6A and 6B, the additional support 21 has a lower additional support 31 and an upper additional support 32. A second fixing portion 33, a rotation shaft 25, and an engagement pin 34 are provided at the top end of the lower additional support 31 in the vertical direction. The upper additional support 32 is rotatably attached to the lower additional support 31 via the rotation shaft 25. As shown in FIG. 6A, when the additional handrail 20 is folded, the upper additional support 32 overlaps the lower additional support 31. This allows the additional handrail 20 to be folded more compactly.

[0027] The lower end of the upper additional support column 32 in the vertical direction is rotatably supported by the rotation shaft 25. In addition, an engagement groove 35 and a fitting portion 36 are formed at the lower end of the upper additional support column 32.

[0028] Fig. 7 is a perspective view showing the state in which the upper additional support 32 of the additional handrail 20 is erected, and Figs. 8A and 8B are enlarged perspective views of area C shown in Fig. 7. Also, Figs. 9A and 9B are views showing the state in which the upper additional support and the upper rail are fitted together. As shown in Fig. 7, the additional handrail 20 is supported so that the upper additional support 32 extends from the inside to the outside of the car 2 relative to the lower additional support 31. By extending the upper additional support 32 from the inside to the outside of the car 2, it is possible to prevent the upper additional support 32 from interfering with other equipment in the elevator shaft.

[0029] By rotating the upper additional support 32, the upper additional support 32 and the lower additional support 31 are erected facing upward in the vertical direction. The upper additional support 32 is erected facing upward in the vertical direction above the upper crosspiece 7 of the existing handrail 4. In addition, an additional crosspiece 22 is provided at the upper end of the upper additional support 32 in the vertical direction. In this way, by attaching the additional handrail 20 to the handrail 4, the height of the handrail can be increased, and safety can be improved when working above the car 2.

[0030] 8A and 8B, when the upper additional support column 32 rotates, the engagement pin 34 engages with the engagement groove 35. The shaft hole 37 in the upper additional support column 32 through which the rotation shaft 25 passes is an elongated hole extending in the vertical direction. After the upper additional support column 32 rotates upward in the vertical direction, the upper additional support column 32 moves slightly downward in the vertical direction along the shaft hole 37.

[0031] 9A, when the upper additional support 32 rotates, the upper crosspiece 7 of the handrail 4 fits into the fitting portion 36 provided on the upper additional support 32. Then, as the upper additional support 32 moves downward in the vertical direction, the fitting portion 36 is placed on the upper surface of the upper crosspiece 7. As described above, the upper additional support 32 extends from the inside to the outside of the car 2. Therefore, the upper additional support 32 is positioned more inward than the upper crosspiece 7. Therefore, as the fitting portion 36 fits into the upper crosspiece 7, the load applied to the additional handrail 20 can be applied to the existing handrail 4 via the upper crosspiece 7. As a result, the rigidity of the additional handrail 20 can be kept low.

[0032] In addition, the additional supports 21 of the additional handrail 20 are arranged between the supports 6 of the handrail 4. This makes it possible to narrow the gap between the supports 6 and the additional supports 21 of the handrail 4 and the additional handrail 20 as a whole. As a result, safety when working above the car 2 can be improved.

[0033] Furthermore, only the upper additional support 32 of the additional support 21 is configured to be rotatable. As a result, when the additional crosspiece 22 gets in the way during work, by rotating only the upper additional support 32, part of the additional handrail 20 can be folded up, improving workability.

[0034] 7, an additional rear rail 26 is rotatably supported on an additional rail 22 arranged on the rear side of the car 1 among the multiple additional rails 22 via a shaft 27. When the additional handrail 20 is folded, the additional rear rail 26 is overlapped with the additional rail 22.

[0035] FIG. 10 is a perspective view showing the additional rear rail 26 of the additional handrail 20 in an unfolded state, and is an enlarged perspective view of area D in FIG. As shown in FIG. 10 , when the additional rear rail 26 is rotated around the shaft 27, the additional rear rail 26 is positioned approximately parallel to the first rear rail 11 and the second rear rail 12 of the handrail 4. In addition, an additional connecting rail 28 is rotatably provided on the end of the additional rear rail 26 opposite the shaft 27. By rotating the additional connecting rail 28, it is positioned approximately parallel in the vertical direction. In addition, the end of the additional connecting rail 28 opposite the additional rear rail 26, i.e., the end in the vertical direction, is fixed to the first rear rail 11.

[0036] As shown in FIG. 11 , the lower end of the additional connecting rail 28 is provided with a fixing portion consisting of a butterfly bolt 41, a clamping portion 42, and a support surface portion 43. The clamping portion 42 is placed on the upper surface of the first rear rail 11, and the support surface portion 43 is placed on the lower surface of the first rear rail 11. The butterfly bolt 41 is provided on the support surface portion 43. By tightening the butterfly bolt 41, the first rear rail 11 is clamped between the clamping portion 42 and the butterfly bolt 41. This allows the additional connecting rail 28 to be fixed to the first rear rail 11.

[0037] 2. Second embodiment Next, an additional handrail according to the second embodiment will be described with reference to Figs. 12 to 13B. Fig. 12 is a perspective view showing an additional handrail according to the second embodiment. Figs. 13A and 13B are enlarged views of an area E shown in Fig. 12.

[0038] The additional handrail 20B according to the second embodiment differs from the additional handrail 20 according to the first embodiment in the configuration of the additional rear rail. Therefore, the additional rear rail will be described, and parts common to the additional handrail according to the first embodiment will be assigned the same reference numerals and redundant description will be omitted.

[0039] 12, the additional handrail 20B has a first additional rear rail 56A and a second additional rear rail 56B. The first additional rear rail 56A and the second additional rear rail 56B are connected via a connecting portion 51.

[0040] 13A and 13B, the end of the first additional rear rail 56A facing the second additional rear rail 56B is provided with a fixing butterfly bolt 52. The end of the second additional rear rail 56B facing the first additional rear rail 56A is provided with a slidable connecting portion 51.

[0041] The connecting portion 51 is formed with a fixing groove 53, a slide screw 54, and a slide groove 55. The slide groove 55 opens along the direction in which the second additional rear rail 56B extends. The slide screw 54 is inserted into the slide groove 55. The slide screw 54 is attached to the second additional rear rail 56B. The fixing groove 53 is formed at an end closer to the first additional rear rail 56A than the slide groove 55.

[0042] As shown in FIG. 13B , when connecting the first additional rear rail 56A and the second additional rear rail 56B, the slide screw 54 is loosened and the connecting part 51 is slid along the slide groove 55. Then, the butterfly bolt 52 is inserted into the fixing groove 53 of the connecting part 51 to fix the connecting part 51 to the first additional rear rail 56A. Next, the slide screw 54 is tightened to fix the connecting part 51 to the second additional rear rail 56B. This allows the first additional rear rail 56A and the second additional rear rail 56B to be connected by the connecting part 51.

[0043] Other configurations are the same as those of the additional handrail 20 according to the first embodiment, so a description thereof will be omitted. The additional handrail 20B according to the second embodiment can also achieve the same effects as those of the additional handrail 20 according to the first embodiment described above.

[0044] The present invention is not limited to the embodiments described above and shown in the drawings, and various modifications can be made without departing from the spirit of the invention as set forth in the claims.

[0045] In addition, in the above-described embodiment, an example was described in which the additional support posts, additional rails, and additional rear rails that make up the additional handrail are formed by bending flat plate-like members, but this is not limited to this. For example, the additional support posts, additional rails, and additional rear rails may be formed from rectangular or cylindrical members. However, by forming the additional support posts, additional rails, and additional rear rails by bending flat plate-like members, the respective members can be overlapped when the additional handrail is folded, allowing the additional handrail to be folded compactly. As a result, it is possible to prevent the additional handrail from interfering with other equipment installed above the elevator car.

[0046] In this specification, the words "parallel" and "orthogonal" are used, but these do not mean only "parallel" and "orthogonal" in the strict sense, but also include "parallel" and "orthogonal" and may also mean a "substantially parallel" or "substantially orthogonal" state within a range in which the functions can be exerted. [Explanation of symbols]

[0047] DESCRIPTION OF SYMBOLS 1...Elevator, 2...Cab, 3...Ceiling portion, 4...Handrail, 6...Support, 7...Upper crosspiece, 8...Middle crosspiece, 20...Additional handrail, 21...Additional support, 22...Additional crosspiece, 23...First fixing portion, 23a...Engagement portion, 25...Pivoting shaft, 26...Additional rear crosspiece, 27...Axis portion, 28...Additional connecting crosspiece, 31...Lower additional support, 32...Upper additional support, 33...Second fixing portion, 34...Engagement pin, 35...Engagement groove, 36...Fitting portion, 37...Axis hole, 41...Wing bolt, 42...Clamping portion, 43...Support surface portion, 51...Connecting portion, 52...Wing bolt, 53...Fixing groove, 54...Slide screw, 55...Slide groove, 56A...First additional rear crosspiece, 56B…Second additional rear pier

Claims

1. An additional handrail that can be detachably attached to the handrail installed at the top of an elevator car, A lower additional support pillar disposed between the upper rail and the middle rail of the handrail; an upper additional support pillar rotatably supported by the lower additional support pillar; an additional beam provided at an end of the upper additional support column opposite to the lower additional support column; a first fixing portion provided at an end portion of the lower additional support column on the side of the central bar and detachably engaging with the central bar; a second fixing portion provided at an end portion of the lower additional support column on the upper rail side and detachably fitted with the upper rail; Additional handrails with.

2. The first fixing portion is an engaging portion that engages with the middle bar; a jack bolt disposed between the engagement portion and the lower additional support. The additional handrail according to claim 1.

3. The upper additional support has a fitting portion that fits with the upper rail of the handrail. The additional handrail according to claim 1.

4. When the upper additional support is folded, the lower additional support, the upper additional support, and the additional rail fit within a horizontal projection plane when the handrail is viewed from the front and rear. The additional handrail according to claim 1.

5. The additional rail has notches formed at positions where it interferes with the lower additional support pillar, the upper additional support pillar, and the handrail. The additional handrail according to claim 4.

6. An additional rear rail, which is disposed rearward in the front-rear direction of the car, is rotatably attached to the additional rail. The additional handrail according to claim 1.

7. The upper additional support pillars are extended from the inside to the outside of the car and erected upward in the vertical direction. The additional handrail according to claim 1.

8. The lower additional support column, the upper additional support column, and the additional crosspiece are formed by bending a flat plate-shaped member. The additional handrail according to claim 1.

9. a car that moves up and down in a hoistway formed in a building structure; A handrail installed on an upper portion of the car; an additional handrail that is detachably attached to the handrail; The additional handrail is A lower additional support pillar disposed between the upper rail and the middle rail of the handrail; an upper additional support pillar rotatably supported by the lower additional support pillar; an additional beam provided at an end of the upper additional support column opposite to the lower additional support column; a first fixing portion provided at an end portion of the lower additional support column on the side of the central bar and detachably engaging with the central bar; a second fixing portion provided at an end portion of the lower additional support column on the upper rail side and detachably fitted with the upper rail; Elevator equipped.

Images