Elevator entrance / exit device

Abstract

To address the problem of reduction in workability of welding work caused by reduction of the frame width of a longitudinal frame.SOLUTION: A doorway device for an elevator comprises: a jamb having a longitudinal frame; and a metal fitting for fixing the longitudinal frame to a wall of a building. The jamb has a reinforcement member for reinforcing the longitudinal frame. The metal fitting is fixed to the reinforcement member by welding. The reinforcement member has a projected part that projects closer to a landing side than the longitudinal frame.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present invention relates to an elevator entrance and exit device.

Background Art

[0002] In a building with an elevator, an elevator entrance and exit device (hereinafter, also simply referred to as an "entrance and exit device") is installed on each floor of the building. The entrance and exit device includes a three-sided frame and is installed at the entrance part between the elevator landing and the hoistway. The three-sided frame is composed of two vertical frames and one upper frame. The two vertical frames are arranged in pairs on the left and right, and the upper frame is arranged spanning between the left and right vertical frames.

[0003] The three-sided frame is installed in an opening formed in the wall of the building. The opening is formed in a vertically long rectangle. The three-sided frame is arranged inside the opening along the edge of the opening. Also, the vertical frames of the three-sided frame are fixed to the wall of the building using mounting brackets (for example, refer to Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The three-sided frame has a reinforcing member for reinforcing the vertical frame. Among elevator entrance and exit devices, there is one in which the above-mentioned mounting bracket is fixed to the reinforcing member by welding. On the other hand, for elevator entrance and exit devices, there is a desire to reduce the frame width of the vertical frame in order to improve the designability when viewing the entrance and exit device from the elevator landing side. However, when the frame width of the vertical frame is reduced, the welding allowance for welding the mounting bracket to the reinforcing member becomes smaller, and the workability of the welding operation deteriorates.

[0006] The object of the present invention is to provide an elevator entrance / exit device that can suppress a decrease in the workability of welding work when the frame width of the vertical frame is reduced. [Means for solving the problem]

[0007] To solve the above problems, for example, the configuration described in the claims can be adopted. This invention includes several means for solving the above-mentioned problems, but one example is an elevator entrance device comprising a three-sided frame having vertical frames and mounting brackets for fixing the vertical frames to the wall of a building. The three-sided frame has reinforcing members that reinforce the vertical frames. The mounting brackets are fixed to the reinforcing members by welding. The reinforcing members have protrusions that extend further towards the landing than the vertical frames. [Effects of the Invention]

[0008] According to the present invention, when reducing the frame width of the vertical frame, it is possible to suppress a decrease in the workability of welding work. Other issues, configurations, and effects not mentioned above will be clarified by the following description of the embodiments. [Brief explanation of the drawing]

[0009] [Figure 1] This is a view of the elevator entrance / exit mechanism from the landing side. [Figure 2] This is a view of the elevator entrance / exit mechanism from the hoistway side. [Figure 3] This is a cross-sectional view showing the vertical frame of a three-sided frame related to the comparative form. [Figure 4] This is a cross-sectional view showing the vertical frame of the three-sided frame according to the embodiment. [Figure 5] This is a cross-sectional view (part 1) illustrating the mounting structure of a three-sided frame in a comparative configuration. [Figure 6] This is a cross-sectional view (part 2) illustrating the mounting structure of the three-sided frame in the comparative configuration. [Figure 7] This is a cross-sectional view (part 1) illustrating the mounting structure of the three-sided frame according to the embodiment. [Figure 8] This is a cross-sectional view (part 2) illustrating the mounting structure of the three-sided frame according to the embodiment. [Figure 9] This is a schematic side view showing the welding points between the reinforcing member and the building fixing bracket according to the embodiment. [Figure 10] This is a schematic plan view showing the welding points between the reinforcing member and the building fixing bracket according to the embodiment. [Modes for carrying out the invention]

[0010] Embodiments of the present invention will now be described in detail with reference to the drawings. In this specification and the drawings, elements having substantially the same function or configuration are denoted by the same reference numerals, and redundant descriptions are omitted.

[0011] Figure 1 shows the elevator entrance / exit device as viewed from the landing side, and Figure 2 shows the elevator entrance / exit device as viewed from the hoistway side. In the following explanation, to clarify the positional relationships of each part, the width direction of the entrance / exit device will be referred to as the X direction, the depth direction of the entrance / exit device as the Y direction, and the height direction of the entrance / exit device as the Z direction. The X, Y, and Z directions are three mutually orthogonal axes.

[0012] As shown in Figures 1 and 2, the elevator entrance / exit device 10 comprises a three-sided frame 12 and a landing door 14. In Figure 2, the landing door 14 is omitted.

[0013] The three-sided frame 12 is installed at the entrance to the elevator. The three-sided frame 12 consists of a pair of vertical frames 18 and an upper frame 20 that spans between the pair of vertical frames 18. One vertical frame 18 is placed on each side of the elevator entrance. The length of the vertical frames 18 is parallel to the Z direction. The upper frame 20 is located above the elevator entrance. The upper frame 20 is also spanned between the upper ends of the pair of vertical frames 18. The length of the upper frame 20 is parallel to the X direction. As a result, the three-sided frame 12 is arranged in a gate-like shape, surrounding the elevator entrance.

[0014] The triple frame 12 is installed inside the opening 25 formed in the wall 24 of the building. The wall 24 of the building corresponds to a concrete wall, for example, if the building is made of concrete (including reinforced concrete). The wall 24 of the building is also called a building wall. The left and right vertical frames 18 of the triple frame 12 are fixed to the wall 24 of the building by corresponding building fixing brackets 16 (Fig. 2). In Fig. 1, the building fixing brackets 16 are omitted.

[0015] The building fixing bracket 16 is a plate-like member that is long in the width direction (X direction) of the opening 25. One end of the building fixing bracket 16 is fixed to the wall 24 of the building by, for example, a fixing structure using an anchor bolt (not shown) or welding, and the other end of the building fixing bracket 16 is fixed to the triple frame 12 by welding. The building fixing brackets 16 are attached to each vertical frame 18 in pairs. The two building fixing brackets 16 are arranged at a predetermined interval in the height direction (Z direction) of the opening 25. The building fixing bracket 16 corresponds to a mounting fitting for fixing the vertical frame 18 to the wall 24 of the building. When reducing the frame width of the vertical frame 18, it is preferable to attach a plurality of building fixing brackets 16 to one vertical frame 18 in order to compensate for the insufficient strength of the vertical frame 18 due to the reduction in the cross-sectional performance of the vertical frame 18.

[0016] The landing door 14 is composed of a pair of doors 14a and 14b. The landing door 14 is a so-called double-opening type door in which the pair of doors 14a and 14b open and close to the left and right. The landing door 14 opens and closes guided by a guide groove of a threshold (not shown). The threshold is a long member installed horizontally (parallel to the X direction) at the bottom of the entrance and exit of the elevator.

[0017] Fig. 3 is a cross-sectional view showing the vertical frame of the triple frame according to the comparative form, and Fig. 4 is a cross-sectional view showing the vertical frame of the triple frame according to the embodiment. Both the vertical frame according to the comparative form and the vertical frame according to the embodiment can be applied as the vertical frame 18 of the above-described entrance and exit device 10.

[0018] In Figures 3 and 4, the X and Y directions indicate the orientation of the three-sided frame installed at the elevator entrance. The X1 direction indicates the closing direction of the landing door 14, which is on the widthwise center side of the opening 25 (Figures 1 and 2), and the X2 direction indicates the opening direction of the landing door 14 on the opposite side. The Y1 direction indicates the elevator landing side, and the Y2 direction indicates the elevator shaft side. The orientation of the vertical frame is symmetrical when it is positioned on the left or right side of the opening 25 as viewed from the elevator shaft side. The orientation of the vertical frame shown in Figures 3 and 4 corresponds to the orientation of the vertical frame positioned on the right side of the opening 25 as viewed from the elevator shaft side.

[0019] The vertical frame 100 shown in Figure 3 is a frame member in which the dimension Lx1 in the X direction and the dimension Ly1 in the Y direction are approximately equal. Dimension Ly1 corresponds to the frame width of the vertical frame 100. The vertical frame 100 integrally includes a first vertical frame section 101, a second vertical frame section 102, a third vertical frame section 103, and a smoke-blocking riser section 104. The first vertical frame section 101 and the third vertical frame section 103 are arranged parallel to the X direction and facing each other in the Y direction. The second vertical frame section 102 and the smoke-blocking riser section 104 are arranged parallel to the Y direction and facing each other in the X direction.

[0020] The second vertical frame section 102 is positioned perpendicular to the first vertical frame section 101 and the third vertical frame section 103, and the smoke-blocking rising section 104 is positioned bent at a right angle from one end of the third vertical frame section 103. The first vertical frame section 101 is positioned facing the landing side (Y1 direction), and the third vertical frame section 103 is positioned facing the elevator shaft side (Y2 direction). The second vertical frame section 102 is positioned facing the center side of the opening width of the opening 25 (X1 direction), and the smoke-blocking rising section 104 is positioned facing the opposite side from the second vertical frame section 102 (X2 direction).

[0021] The dimensions of the first vertical frame section 101 in the X direction and the dimensions of the third vertical frame section 103 in the X direction are both equal, Lx1. The dimensions of the smoke-blocking rise section 104 in the Y direction are shorter than the dimensions of the second vertical frame section 102 in the Y direction, Ly1. An opening 105 is formed in the vertical frame 100 according to the dimensional difference between the second vertical frame section 102 and the smoke-blocking rise section 104. The opening 105 is formed along the length direction of the vertical frame 100 (the depth direction of the paper in Figure 3).

[0022] The vertical frame 200 shown in Figure 4 is a frame member in which the dimension Lx2 in the X direction is greater than the dimension Ly2 in the Y direction. Dimension Ly2 corresponds to the frame width of the vertical frame 200. The vertical frame 200 integrally includes a first vertical frame section 201, a second vertical frame section 202, a third vertical frame section 203, and a smoke-blocking riser section 204. The first vertical frame section 201 and the third vertical frame section 203 are arranged parallel to the X direction and facing each other in the Y direction. The second vertical frame section 202 and the smoke-blocking riser section 204 are arranged parallel to the Y direction and facing each other in the X direction.

[0023] The second vertical frame section 202 is positioned perpendicular to the first vertical frame section 201 and the third vertical frame section 203, and the smoke-blocking riser section 204 is positioned bent at a right angle from one end of the third vertical frame section 203. The first vertical frame section 201 is positioned facing the landing side (Y1 direction), and the third vertical frame section 203 is positioned facing the elevator shaft side (Y2 direction). The second vertical frame section 202 is positioned facing the center of the opening width of the opening 25 (X1 direction), and the smoke-blocking riser section 204 is positioned facing the opposite side of the second vertical frame section 202 (X2 direction).

[0024] The X-direction dimension of the first vertical frame section 201 is shorter than the X-direction dimension Lx2 of the third vertical frame section 103. The Y-direction dimension of the smoke-blocking riser section 204 is shorter than the Y-direction dimension Ly2 of the second vertical frame section 202. Furthermore, the Y-direction dimension of the smoke-blocking riser section 204 is approximately the same as the Y-direction dimension of the smoke-blocking riser section 104 described above. An opening 205 is formed in the vertical frame 200 according to the dimensional difference between the first vertical frame section 201 and the third vertical frame section 203, and the dimensional difference between the second vertical frame section 202 and the smoke-blocking riser section 204. The opening 205 is formed along the length direction of the vertical frame 200 (the depth direction of the paper in Figure 4).

[0025] The difference between the dimension Ly1 of the vertical frame 100 shown in Figure 3 and the dimension Ly2 of the vertical frame 200 shown in Figure 4 is perceived by passengers standing in the elevator landing facing the landing door 14 as a difference in the perceived depth of the vertical frame. Specifically, the vertical frame 200 with dimension Ly2 gives passengers a shallower, more streamlined impression compared to the vertical frame 100 with dimension Ly1. Therefore, by adopting the vertical frame 200, which has a narrower frame width than the vertical frame 100, as the vertical frame 18 of the entrance / exit device 10 shown in Figure 1, the aesthetic design can be improved.

[0026] However, if a narrow vertical frame 200 is used, the welding allowance for welding the mounting bracket to the reinforcing member that reinforces the vertical frame becomes smaller, reducing the workability of the welding process. For this reason, in this embodiment, a reinforcing member suitable for a narrow vertical frame 200 is used. The mounting structure of the three-sided frame including the reinforcing member will be described in detail below.

[0027] Figure 5 is a cross-sectional view illustrating the mounting structure of the three-sided frame in the comparative configuration. As shown in Figure 5, reinforcing members 150 are attached to the vertical frames 100 of the three-sided frame. The reinforcing members 150 are metal members that reinforce the vertical frames 100. The reinforcing members 150 are members that are fixed to the building fixing brackets 16 by welding when the three-sided frame 12 is fixed to the building wall 24 by the building fixing brackets 16 described above.

[0028] The reinforcing member 150 has a first plate-like portion 151, a second plate-like portion 152, and a third plate-like portion 153. The reinforcing member 150 is formed in a substantially L-shape in plan view. The reinforcing member 150 is positioned within the frame of the vertical frame 100. The area within the frame of the vertical frame 100 refers to the rectangular space in plan view enclosed by the first vertical frame portion 101, the second vertical frame portion 102, the third vertical frame portion 103, and the smoke-blocking rising portion 104.

[0029] The reinforcing member 150 is fixed to the vertical frame 100. Specifically, the first plate-shaped portion 151 of the reinforcing member 150 is positioned inside the first vertical frame portion 101 of the vertical frame 100, overlapping with the first vertical frame portion 101 in the Y direction, and the first plate-shaped portion 151 is fixed to the first vertical frame portion 101 at the overlapping portion by, for example, rivets (not shown). Parts of the first plate-shaped portion 151 and part of the second plate-shaped portion 152 are exposed to the outside through the opening 105 of the vertical frame 100. The other part of the second plate-shaped portion 152 is positioned inside the smoke-blocking rising portion 104, overlapping with the smoke-blocking rising portion 104 in the X direction, and the third plate-shaped portion 153 is positioned inside the third vertical frame portion 103, overlapping with the third vertical frame portion 103 in the Y direction.

[0030] When fixing the building fixing bracket 16 to the reinforcing member 150, as shown in Figure 5, the end of the building fixing bracket 16 is brought into contact with the second plate-shaped portion 152 of the reinforcing member 150, and in that state, the welding rod 30 is brought close to the area to be welded from the landing side or the elevator shaft side, and the reinforcing member 150 and the building fixing bracket 16 are fixed by arc welding or the like.

[0031] After the installation of the entrance / exit device 10, including the installation of the three-sided frame 12, is completed, a finishing wall 31 is formed using mortar or the like to fill the gap between the three-sided frame 12 and the building wall 24.

[0032] Furthermore, as shown in Figure 6, in the case of a building wall that is left as is without being covered with mortar or the like, a so-called one-pass finished wall, the welding rod 30 is brought close to the welded portion of the reinforcing member 150 and the building fixing bracket 16 from the elevator shaft side, and the reinforcing member 150 and the building fixing bracket 16 are fixed by arc welding or the like. In addition, the back side of the building wall 24 is filled with caulking 33 to finish it.

[0033] Figure 7 is a cross-sectional view illustrating the mounting structure of the three-sided frame according to the embodiment. As shown in Figure 7, reinforcing members 250 are attached to the vertical frames 200 of the three-sided frame. The reinforcing members 250 are metal members that reinforce the vertical frames 200. The reinforcing members 250 are members that are fixed to the building fixing brackets 16 by welding when the three-sided frame 12 is fixed to the building wall 24 by the building fixing brackets 16 described above.

[0034] The reinforcing member 250 has a first plate-like portion 251, a second plate-like portion 252, and a third plate-like portion 253. The reinforcing member 250 is formed in a substantially T-shape in plan view. This allows the second plate-like portion 252, which is part of the reinforcing member 250, to protrude outside the frame of the vertical frame 200 while the first plate-like portion 251 and the third plate-like portion 253, which are the main parts of the reinforcing member 250 as described later, are housed within the frame of the vertical frame 200. The reinforcing member 250 is constructed as a single integrated structure, for example, by bending a single steel plate. This makes it possible to reduce the cost of parts.

[0035] However, the reinforcing member 250 is not limited to a single integrated structure; for example, it may be a structure in which two L-shaped plates are combined in a T-shape and fixed to each other, or a structure in which two rectangular plates are combined in a T-shape and fixed to each other by welding or the like. This makes it possible to easily change the protruding dimension of the second plate-like portion 252 by changing the dimensions of one of the L-shaped plates or the rectangular plate constituting the reinforcing member 250 as a change parameter.

[0036] Of the three plate-like portions (251, 252, 253) that constitute the reinforcing member 250, the first plate-like portion 251 and the third plate-like portion 253 are positioned within the frame of the vertical frame 200. The area within the frame of the vertical frame 200 refers to the rectangular space in plan view enclosed by the first vertical frame portion 201, the second vertical frame portion 202, the third vertical frame portion 203, and the smoke-blocking rising portion 204.

[0037] The reinforcing member 250 is fixed to the vertical frame 200. Specifically, the first plate-shaped portion 251 of the reinforcing member 250 is positioned inside the first vertical frame portion 201 of the vertical frame 200, overlapping with the first vertical frame portion 201 of the vertical frame 200 in the Y direction, and the first plate-shaped portion 251 is fixed to the first vertical frame portion 201 at the overlapping portion by, for example, rivets (not shown). A part of the first plate-shaped portion 251, all of the second plate-shaped portion 252, and a part of the third plate-shaped portion 253 are exposed to the outside through the opening 205 of the vertical frame 200. The other part of the third plate-shaped portion 253 is positioned inside the smoke-blocking riser portion 204, overlapping with the smoke-blocking riser portion 204 in the X direction. The second plate-shaped portion 252 is positioned so as to protrude from the vertical frame 200 toward the landing side (Y1 direction). More specifically, the second plate-like portion 252 is positioned so as to protrude toward the landing side from the inner surface of the first vertical frame portion 201. The second plate-like portion 252 corresponds to a protruding portion that ensures a large welding allowance between the reinforcing member 250 and the building fixing bracket 16.

[0038] When fixing the building fixing bracket 16 to the reinforcing member 250, as shown in Figure 7, the end of the building fixing bracket 16 is brought into contact with the second plate-shaped portion 252 of the reinforcing member 250, and in that state, the welding rod 30 is brought closer to the area to be welded from the landing side, and the reinforcing member 250 and the building fixing bracket 16 are fixed by arc welding or the like. As a result, a welding bead 35 is formed at the contact point between the reinforcing member 250 and the building fixing bracket 16, as shown in Figures 9 and 10. At that time, since the second plate-shaped portion 252 of the reinforcing member 250 protrudes towards the landing side from the vertical frame 200, the reinforcing member 250 and the building fixing bracket 16 can be welded while securing a large welding allowance in this protruding portion. Therefore, when reducing the frame width of the vertical frame 18 of the three-sided frame 12 from the dimension Ly1 shown in Figure 3 to the dimension Ly2 shown in Figure 4 in order to improve the design as described above, it is possible to suppress a decrease in the workability of the welding work. Incidentally, the fact that the reinforcing member 250 has a second plate-like portion 252 is beneficial not only for securing a large welding allowance with the building fixing bracket 16, but also for securing a large welding allowance with the fire-resistant partition plate (not shown).

[0039] After the installation of the entrance / exit device 10, including the installation of the three-sided frame 12, is completed, a finishing wall 31 is formed using mortar or the like to fill the gap between the three-sided frame 12 and the building wall 24.

[0040] Furthermore, as shown in Figure 8, in the case of a building wall that is left as is without being covered with mortar or the like, a so-called one-pass finished building wall, the welding rod 30 is brought close to the welded portion of the reinforcing member 250 and the building fixing bracket 16 from the elevator shaft side, and the reinforcing member 250 and the building fixing bracket 16 are fixed by arc welding or the like. In addition, the back side of the building wall 24 is filled with caulking 33 to finish it. In the case of the one-pass finished building wall described above, the welding rod 30 and the smoke barrier riser portion 204 are more likely to interfere with each other compared to when a finished wall 31 is formed. In this embodiment, since the second plate-like portion 252 of the reinforcing member 250 protrudes in the direction away from the smoke barrier riser portion 204 (Y1 direction), welding work can be performed while easily avoiding interference between the welding rod 30 and the smoke barrier riser portion 204.

[0041] It should be noted that the present invention is not limited to the embodiments described above, and includes various modifications. For example, although the embodiments described above are explained in detail to facilitate understanding of the present invention, the present invention is not necessarily limited to having all the configurations described in the embodiments described above. Furthermore, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment. It is also possible to add the configuration of another embodiment to the configuration of one embodiment. In addition, it is possible to delete, add, or replace a part of the configuration of each embodiment. [Explanation of Symbols]

[0042] 10…Elevator entrance / exit device, 12…Three-sided frame, 16…Building fixing bracket (mounting hardware), 18,200…Vertical frame, 250…Reinforcement member, 252…Second plate-shaped part (protruding part)

Claims

1. An elevator entrance device comprising a three-sided frame having vertical frames and mounting brackets for fixing the vertical frames to the wall of a building, The three-sided frame has reinforcing members that reinforce the vertical frame, The mounting bracket is fixed to the reinforcing member by welding. The reinforcing member has a projection that protrudes toward the landing side from the vertical frame and serves as a welding allowance for welding the mounting bracket, The aforementioned protrusion is positioned parallel to the width direction of the vertical frame and faces the landing side, and protrudes toward the landing side from the inner surface of the first vertical frame portion. Elevator entrance / exit device.

2. The reinforcing member is formed in a T-shape in plan view. An elevator entrance / exit device according to claim 1.

3. The reinforcing member has a structure in which two L-shaped plates are combined in a T-shape and fixed to each other, or a structure in which two rectangular plates are combined in a T-shape and fixed to each other. An elevator entrance / exit device according to claim 2.

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