Branch box for elevator wiring

Abstract

To improve the efficiency of installation work of a branch box of an elevator wiring, which is installed to cover a wire connection portion of the elevator wiring, on a wall surface of a hoistway and simplify the installation work.SOLUTION: A branch box of an elevator wiring includes a resin-made main body part having a rear surface brought into surface contact with a wall surface and a top surface provided with a wire connection part of a trunk wiring and a branch wiring and a resin-made cover part covering the top surface of the main body part from the upper side of the wire connection part. The main body part includes a plurality of fitting protruded parts protruded in roofed cylindrical shapes on its top surface. The cover part includes a plurality of fitting recessed parts recessed in roofed cylindrical shapes on a side facing the main body part so as to be respectively fitted to the plurality of protruded parts detachably. The branch box is fixed to the wall surface by driving a rivet on at least any one of the plurality of fitting recessed parts fitted to the plurality of fitting protruded parts.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present disclosure relates to a distribution box for elevator wiring.

Background Art

[0002] Patent Document 1 discloses a technique related to a joint box (registered trademark) used in electrical wiring work. In this technique, it is stated that the installation work is simplified by providing an integral box with a length capable of storing the wire bundle almost straight and bundling it together with the outer covering of the electric wire cable.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In new construction or renovation work of an elevator, new elevator wiring may be installed. The elevator wiring has branch wiring branched to each floor connected to a main wiring running vertically through the hoistway. When installing the elevator wiring in the hoistway, it is necessary to fix a distribution box covering the connection part to the wall surface of the hoistway. Although the technique of Patent Document 1 states that the installation work of the distribution box is simplified by bundling it to the building materials, the efficiency and simplification in fixing the distribution box to the wall surface have not been studied.

[0005] The present disclosure has been made to solve the above-described problems, and an object thereof is to improve the efficiency and simplify the installation work on the wall surface of the hoistway in a distribution box for elevator wiring installed so as to cover the connection part of the elevator wiring.

Means for Solving the Problems

[0006] The branch box for elevator wiring of the first disclosure is a branch box for elevator wiring that is fixed to the wall surface of the hoistway with screws so as to cover the connection part between the main wiring and the branch wiring of the elevator. The branch box includes a resin main body part whose back surface is in contact with the wall surface and the connection part is arranged on the front surface, and a resin cover part that covers the front surface of the main body part from above the connection part. The main body part includes a plurality of fitting convex parts that protrude in a lid-covered cylindrical shape on the side of the front surface. The cover part includes a plurality of fitting concave parts that are recessed in a lid-covered cylindrical shape on the side facing the main body part so as to be detachably fitted to each of the plurality of convex parts. The branch box is fixed to the wall surface by driving a screw from above at least one of the plurality of fitting concave parts fitted with the plurality of convex parts.

[0007] The branch box for elevator wiring of the second disclosure is a branch box for elevator wiring that is fixed to the wall surface of the hoistway with screws so as to cover the connection part between the main wiring and the branch wiring of the elevator. The branch box includes a resin cover part that covers from above the connection part. The cover part includes a plurality of fitting concave parts that are recessed in a lid-covered cylindrical shape on both edge parts sandwiching the arranged connection part and whose side in contact with the wall surface. The branch box is fixed to the wall surface by driving a screw from above at least one of the plurality of fitting concave parts.

Advantages of the Invention

[0008] According to the branch box for elevator wiring of the first disclosure, the plurality of fitting convex parts of the main body part and the plurality of fitting concave parts of the cover part are fitted together. Then, by driving a screw from above at least one of the plurality of fitted fitting concave parts, the branch box is fixed to the wall surface. According to such a configuration, by the operation of driving the screw, the main body part and the cover part can be fixed to the wall surface at once. Further, by crushing the hollow formed between the plurality of fitting convex parts and the wall surface, the impact of the screw driving machine when firing the screw can be alleviated. Thereby, the efficiency and simplicity of the installation work of the branch box in the hoistway of the elevator can be achieved.

[0009] According to the branch box for elevator wiring of the second disclosure, the branch box is fixed to the wall surface by driving a nail from above at least one of the plurality of fitting recesses. According to such a configuration, by crushing the hollow formed between the fitting recess and the wall surface, the impact of the nail driving machine when firing the nail can be alleviated. Thereby, the efficiency and simplification of the installation work of the branch box in the hoistway of the elevator can be achieved.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Embodiments for Carrying Out the Invention

[0011] Hereinafter, embodiments will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the element which is common in each figure, and the overlapping description is abbreviate | omitted.

[0012] Embodiment 1. 1. Configuration of the elevator apparatus according to the embodiment FIG. 1 is a diagram showing an example of an elevator apparatus to which a distribution box in an embodiment is applied. The elevator apparatus 100 is applied to, for example, a building having a plurality of floors. In the building, a hoistway 3 of the elevator apparatus 100 is provided. The hoistway 3 is a vertically long space extending over a plurality of floors. A landing 10 is provided on each of the plurality of floors. In this example, a machine room 3a is provided above the hoistway 3. At the bottom of the hoistway 3, a pit 3b is provided.

[0013] The elevator apparatus 100 includes a car 1 and a counterweight 2. The car 1 forms an internal space by connecting a plurality of panel members to each other. The car 1 moves up and down in the hoistway 3. The counterweight 2 moves up and down on the back side of the car 1 in the hoistway 3. The car 1 and the counterweight 2 are suspended in the hoistway 3 by a main rope 4.

[0014] The main rope 4 is wound around a driving sheave 6 of a hoisting machine 5. When the driving sheave 6 rotates, the main rope 4 moves in a direction corresponding to the direction in which the driving sheave 6 rotates. The car 1 moves up or down according to the direction in which the main rope 4 moves. The movement of the car 1 is guided by a guide rail 7.

[0015] The guide rail 7 is provided linearly in the vertical direction. The guide rail 7 is arranged from the pit 3b of the hoistway 3 to the top of the hoistway 3. The car 1 is arranged between two guide rails 7.

[0016] The counterweight 2 moves in a direction opposite to the direction in which the car 1 moves in the hoistway 3 on the back side of the car 1. The movement of the counterweight 2 is guided by a guide rail 9.

[0017] The guide rail 9 is provided linearly in the vertical direction. The guide rail 9 is arranged from the pit 3b of the hoistway 3 to the top of the hoistway 3. The counterweight 2 is arranged between two guide rails 9.

[0018] In this way, the car 1 and the counterweight 2 are suspended in a bucket-like manner so as to move up and down in opposite directions to each other in the hoistway 3 by the main rope 4. That is, the main rope 4 suspends the car 1 and the counterweight 2 in the hoistway 3 in a 1:1 roping system.

[0019] On the wall of each landing 10 of a plurality of floors, a landing operation panel 12 is installed respectively. The landing operation panel 12 is a device that receives the operation of the user's landing call. The elevator device 100 is controlled by a control panel 14. The control panel 14 is installed, for example, in the machine room 3a. An elevator wiring 16 is connected to the control panel 14. The elevator wiring 16 includes one main wiring 16a and a plurality of branch wirings 16b. The main wiring 16a is a main wiring that is vertically drawn in the hoistway 3 from the control panel 14 in the machine room 3a to the pit 3b. At positions corresponding to each floor, branch wirings 16b are respectively connected to the main wiring 16a. The branch wiring 16b is horizontally drawn in the hoistway 3 and is connected to the landing operation panel 12 of each floor respectively.

[0020] A resin branch box 20 is installed at the connection part 16c between the main wiring 16a and the branch wiring 16b. The branch box 20 is fixed to the wall surface in the hoistway 3 with screws in a state of covering the periphery of the connection part 16c. Hereinafter, the characteristics of the branch box 20 will be described in more detail.

[0021] 2. Configuration of the branch box 20 FIG. 2 is a diagram showing an example of the configuration of the branch box. The branch box 20 has a rectangular shape with rounded corners in a front view, and the main wiring 16a is arranged in a direction of vertically penetrating along the longitudinal direction. The branch box 20 includes a main body part 22 and a cover part 30. The main body part 22 is a resin plate material whose back surface is in contact with the wall surface and the connection part 16c is arranged on the front surface. As the material of the main body part 22, for example, polypropylene is exemplified. The main body part 22 arranges the connection part 16c on the upper surface side and fixes the main wiring 16a in a direction of vertically penetrating along the longitudinal direction. In the example shown in FIG. 2, the positions before and after the connection part 16c in the main wiring 16a are fixed to the main body part 22 by a resin bundling member 26.

[0022] The cover part 30 is a dome-shaped resin member that covers the connection part 16c from above the main body part 22. As an example of the material of the cover part 30, polypropylene is exemplified. Further, for the cover part 30, a transparent or translucent color that allows the internal connection part 16c to be visible is adopted. An opening for passing the main wiring 16a is provided at one end side in the longitudinal direction of the cover part 30, and an opening for passing the main wiring 16a and the branch wiring 16b is provided at the other end side in the longitudinal direction.

[0023] The cover part 30 is temporarily attached to the main body part 22 by a fitting structure. The fitting structure is constituted by a plurality of fitting convex parts 24 provided on the main body part 22 and a plurality of fitting concave parts 32 provided on the cover part 30. The plurality of fitting convex parts 24 are convex structures that protrude in a covered cylindrical shape from the side of the surface of the main body part 22. A plurality of the fitting convex parts 24 are provided side by side along both edge parts in the longitudinal direction of the main body part 22 with the connection part 16c interposed therebetween. The plurality of fitting concave parts 32 are concave structures that are recessed in a covered cylindrical shape from the side facing the main body part 22 of the cover part 30. A plurality of the fitting concave parts 32 are provided side by side at positions overlapping with each of the plurality of fitting convex parts 24, that is, along both edge parts in the longitudinal direction of the cover part 30.

[0024] Each of the plurality of fitting concave parts 32 of the cover part 30 is fitted to the corresponding fitting convex part 24. FIG. 3 is a schematic diagram showing a cross section of the fitting structure by the fitting concave part and the fitting convex part. As shown in this figure, the outer surface 24a of the fitting convex part 24 is detachably fitted into the inner surface 32a of the fitting concave part 32. The dimensions of the fitting convex part 24 and the fitting concave part 32 are adjusted so that the cover part 30 has a fitting strength that does not naturally come off when it is temporarily attached to the main body part 22.

[0025] 3. Fixing method of the branch box 20 Taking the case of newly installing the elevator wiring 16 of the elevator device 100 in the hoistway 3 as an example, the fixing method of the distribution box 20 will be described. The main body 22 is fixed to the connection part 16c of the elevator wiring 16 by a bundling member 26. Further, the cover part 30 is temporarily attached so as to cover the connection part 16c by a fitting structure including a fitting recess 32 and a fitting projection 24. Thus, since the distribution box 20 is temporarily attached to the connection part 16c of the elevator wiring 16 brought into the work site, the connection part 16c can be effectively protected during the transportation of the elevator wiring 16.

[0026] The distribution box 20 with the cover part 30 temporarily attached to the main body 22 is fixed to the wall surface of the hoistway 3 by one or a plurality of bolts 40. FIG. 4 is a diagram illustrating the distribution box fixed to the wall surface of the hoistway. The bolt 40 is driven in from above the fitting recess 32 of the cover part 30. There is no limitation on the number and arrangement of the bolts 40. In the example shown in FIG. 4, among the plurality of fitting recesses 32, the bolts 40 are driven into four fitting recesses 32 on each of the left and right sides. A hollow space is formed on the back side of the fitting projection 24. Therefore, when the bolt 40 is driven in, the fitting recess 32 and the fitting projection 24 are crushed. Thereby, the impact of the bolting machine when firing the bolt 40 is alleviated.

[0027] Since the distribution box 20 is made of a resin material, there is no need to separately provide a grounding circuit. Further, as a rain droplet countermeasure, it is required that the terminal part of the connection part 16c be arranged so as to face upward. Since the cover part 30 of the distribution box 20 has a transparent or translucent color that allows the connection part 16c to be visible, the state of the connection part 16c can be confirmed even after the distribution box 20 is fixed.

[0028] 4. Additional Structure of Distribution Box 20 The distribution box 20 may further have the following additional structure.

[0029] 4-1. Slit Figure 5 is an enlarged view of region A in Figure 3. As shown in this figure, on the outer surface 32b of the fitting recess 32, a plurality of slits 32c are provided along the circumferential direction. There is no limitation on the shape and quantity of the plurality of slits 32c. According to such a fitting structure, when the nail 40 is driven into the center of the fitting recess 32, the fitting recess 32 and the fitting projection 24 are more likely to be crushed due to the effect of the slits 32c. Thereby, the effect of alleviating the impact of the nail driving machine when firing the nail 40 can be stably obtained. In Figure 3, the slits 32c of the fitting recess 32 are illustrated, but in addition to or instead of this, a plurality of similar slits may also be provided on the outer surface of the fitting projection 24.

[0030] 4-2. Trace groove Figure 6 is an enlarged view of region B in Figure 3. Also, Figure 7 is a front view of the cover part. As shown in Figures 6 and 7, around each fitting recess 32 of the cover part 30, a trace groove 34 is provided so as to surround the periphery of each fitting recess 32. In the example of Figure 6, the trace groove 34 is configured as a groove with a triangular cross-section provided on the back surface of the cover part 30.

[0031] When it is necessary to remove the cover part 30 attached by the nail 40, a method of separating the periphery of the fitting recess 32 fixed by the nail 40 can be considered. Since the thickness of the portion where the trace groove 34 is provided is thinner than other places, it is easy to separate. For this reason, the operator can easily separate the periphery of the fitting recess 32 fixed by the nail 40 by making a cut along the trace groove 34. Note that the trace groove 34 is not limited in its shape as long as it is provided so as to surround the periphery of each fitting recess 32.

[0032] 5. Modification example of the distribution box The distribution box 20 may adopt the following modified forms.

[0033] The branching box 20 may not be provided with the main body portion 22 as long as it is provided with at least the cover portion 30. In this case, the fitting recess 32 of the cover portion 30 will directly contact the wall surface. The nail 40 is driven in from above the fitting recess 32 of the cover portion 30. There is no limitation on the number and arrangement of the nails 40. When the nail 40 is driven in, the fitting recess 32 is crushed. Therefore, even in the branching box 20 of such a modified example, it is possible to achieve at least the effect of mitigating the impact of the nail driving machine when firing the nail 40.

[0034] In addition, in the branching box 20 of the modified example, it is also possible to provide the tracing groove 34 or the slit 32c described above. Thereby, the effects of providing the tracing groove 34 and the effects of providing the slit 32c can be achieved.

Explanation of Signs

[0035] 1 cage, 1a upper cage, 3 hoistways, 3a machine room, 3b pit, 4 main rope, 5 hoisting machine, 6 driving sheave, 7 guide rail, 9 guide rail, 10 landing, 12 landing operation panel, 14 control panel, 16 elevator wiring, 16a main wiring, 16b branch wiring, 16c connection part, 20 branching box, 22 main body part, 24 fitting convex part, 24a outer surface, 26 bundling member, 30 cover part, 32 fitting recess, 32a inner surface, 32b outer surface, 32c slit, 34 tracing groove, 40 nail, 100 elevator device

Claims

1. A branch box for elevator wiring that is fixed to the wall surface of a hoistway with screws so as to cover the connection part between the main wiring and the branch wiring of an elevator, A resin main body part whose back surface is in contact with the wall surface and the connection part is arranged on the front surface, A resin cover part that covers the front surface of the main body part from above the connection part, and The main body part Is provided with a plurality of fitting convex parts protruding in a lid-covered cylindrical shape on the side of the front surface, The cover part Is provided with a plurality of fitting concave parts whose side facing the main body part is recessed in a lid-covered cylindrical shape so as to be detachably fitted to each of the plurality of fitting convex parts, The branch box is fixed to the wall surface by driving a screw from above at least one of the plurality of fitting concave parts fitted with the plurality of fitting convex parts Branch box for elevator wiring.

2. The branch box for elevator wiring according to claim 1, further comprising a resin bundling member for fixing the main wiring to the main body part.

3. A plurality of slits are provided on the side surface of the lid-covered cylindrical shape of the plurality of fitting convex parts The branch box for elevator wiring according to claim 1 or claim 2.

4. A plurality of slits are provided on the side surface of the lid-covered cylindrical shape of the plurality of fitting concave parts The branch box for elevator wiring according to any one of claims 1 to 3.

5. The cover part has a tracing groove formed so as to surround each of the plurality of fitting concave parts The branch box for elevator wiring according to any one of claims 1 to 4.

6. The branch box for elevator wiring according to any one of claims 1 to 5, wherein a plurality of the plurality of fitting convex parts are provided side by side on both edge parts sandwiching the arranged connection part.

7. A branch box for elevator wiring that is fixed to the wall surface of a hoistway with nails so as to cover the connection part between the main wiring and the branch wiring of an elevator, comprising a resin cover part that covers from above the connection part, The cover part has a plurality of fitting recesses that are recessed in a lid-covered cylindrical shape on the side that contacts the wall surface at both edge parts sandwiching the arranged connection part, The branch box is fixed to the wall surface by driving a nail from above at least any one of the plurality of fitting recesses, Branch box for elevator wiring.

8. The plurality of fitting recesses are provided with a plurality of slits on the side surface of the lid-covered cylindrical shape, The branch box for elevator wiring according to Claim 7.

9. The cover part has tracing grooves formed so as to surround the periphery of each of the plurality of fitting recesses, The branch box for elevator wiring according to Claim 7 or Claim 8.

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