WO2014108963A1 - Fall prevention member and lighting device utilizing same - Google Patents

Abstract

This fall prevention member is used for preventing a lighting device from falling, both ends of the fall prevention member being attached to the body of the lighting device and a fixation part. The fall prevention member is equipped with a wire that is made of a non-ferrous material, first and second crimp sleeves whereat portions of the wire ends bent into loops are crimped in an inserted state so as to form first and second loop portions, and corrosion-resistant first and second protective layers. The corrosion-resistant first and second protective layers are made of first and second oxide coating layers and first and second sintered ceramic layers that are formed on the surfaces of the first and second oxide coating layers, and are formed so as to cover at least the surfaces of the first and second crimp sleeves.

Description

Fall prevention member and lighting apparatus using the same

The present invention generally relates to a fall prevention member and a lighting fixture using the same, and more particularly to a fall prevention member whose both ends are respectively attached to a fixture main body and a fixed part of the lighting fixture and a lighting fixture using the same. It is.

Conventionally, there are lighting fixtures that are installed and used in high places such as the ceiling, and in such lighting fixtures, a fall prevention member has been attached to the lighting device in order to take multiple safety measures (for example, a Japanese patent application) Publication number 2003-308719 (hereinafter referred to as “Document 1”).

The fall prevention member disclosed in Document 1 is made of a metal wire, covered with a cylindrical sleeve with the end of the wire being annular, and forming an annular portion at both ends of the wire by crushing the sleeve Has been. One annular part is hooked on the beam behind the ceiling, and the other annular part is connected to the illuminating device main body via a coil spring, and even if the means for fixing the illuminating device main body to the ceiling is removed, the wire The lighting device itself is suspended from the ceiling so that it does not fall to the floor.

By the way, even when the lighting device described in Document 1 is used in a corrosive environment such as a salt damage area, a chemical factory, or an indoor pool, the wire is formed of stainless steel, so that the corrosion of the wire hardly proceeds, The wire itself can maintain sufficient strength. However, since the stress applied at the time of crimping remains in the sleeve, when used in a corrosive environment, the sleeve tends to corrode more easily than the wire, and the strength of the fall prevention member decreases due to the sleeve corrosion. There was a possibility.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a fall prevention member that suppresses a decrease in strength due to corrosion and a lighting fixture using the same.

Both ends of the fall prevention member of the present invention are respectively attached to the fixture body of the lighting fixture and the fixed part to which the fixture body is fixed. The fall prevention member includes a non-ferrous material wire, a non-ferrous material first crimp sleeve, a non-ferrous material second crimp sleeve, a corrosion-resistant first protective layer, and a corrosion-resistant second protective layer. The first crimping sleeve is crimped in a state where the wire is inserted so that a portion where the first end portion of the wire is bent in a loop shape is formed as the first loop portion. The second crimping sleeve is crimped in a state where the wire is inserted so that a portion where the second end portion of the wire is bent in a loop shape is formed as the second loop portion. The first protective layer is formed so as to cover at least the surface of the first pressure-bonding sleeve. The second protective layer is formed so as to cover at least the surface of the second pressure-bonding sleeve.

In this fall prevention member, the first protective layer is formed so as to cover the surface of the crimped portion by the first crimping sleeve and the surface of the first loop portion, respectively, and the second protective layer is crimped by the second crimping sleeve. It is preferable that the surface of the portion and the surface of the second loop portion are formed so as to cover each other.

In this fall prevention member, the first protective layer includes a first oxide film layer and a first ceramic fired layer, and the second protective layer includes a second oxide film layer and a second ceramic fired layer. Is preferred. The first oxide film layer is formed at least on the surface of the first pressure-bonding sleeve. The ceramic fired layer is formed so as to cover the first oxide film layer. The second oxide film layer is formed on at least the surface of the second pressure-bonding sleeve. The second ceramic fired layer is formed so as to cover the second oxide film layer.

In this fall prevention member, the first oxide film layer is further formed in the cylinder of the first pressure-bonding sleeve and between the first pressure-bonding sleeve and the wire, and the second oxide film layer is formed in the cylinder of the second pressure-bonding sleeve. Preferably, it is further formed between the second crimping sleeve and the wire.

A lighting fixture of the present invention includes the above-described fall prevention member and a fixture main body that holds a light source, and a first loop portion provided on the first end side of the wire is fixed to the fixture main body via a first fixture. The second loop portion provided on the second end side of the wire is fixed to the fixing portion via the second fixing tool.

According to the fall prevention member of the present invention, since the surface of the crimping portion by the first and second crimping sleeves is covered with the corrosion-resistant first and second protective layers, even when used in a corrosive environment, Corrosion of the crimp sleeve is unlikely to proceed, and a drop in strength of the fall prevention member can be suppressed.

According to the lighting fixture of the present invention, since the fixture main body is fixed to the fixed portion using the fall prevention member in which the decrease in strength is suppressed, the safety of the lighting fixture is improved.

Preferred embodiments of the invention are described in more detail. Other features and advantages of the present invention will be better understood with reference to the following detailed description and accompanying drawings.
1A is a plan view showing the fall prevention member of the present embodiment, FIG. 1B is a rear view of the main part of the fall prevention member of the present embodiment, FIG. 1C is a sectional view taken along line A1-A1 of FIG. 1A, and FIG. FIG. 1B is a cross-sectional view taken along line A2-A2 of FIG. 1A. It is a construction state figure of the lighting fixture which uses the fall prevention member of this embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1A to 1D and FIG.

1A is a plan view showing the entirety of the fall prevention member 1, FIG. 1B is a rear view showing an end portion of the fall prevention member 1, FIG. 1C is a sectional view taken along line A1-A1, and FIG. 1D is a sectional view taken along line A2-A2. .

The fall prevention member 1 includes a wire 2, a first crimping sleeve 31, and a second crimping sleeve 32. The wire 2 is formed by cutting a stainless steel wire into a desired length, for example. The first crimping sleeve 31 is crimped and fixed with the first end of the wire 2 bent in a loop shape. The second crimping sleeve 32 is crimped and fixed with the second end of the wire 2 bent in a loop. In addition, although the wire 2 is formed with stainless steel, as long as it is a nonferrous material, it may be formed with materials other than stainless steel.

Each of the first and second crimping sleeves 31 and 32 is formed in a cylindrical shape by, for example, stainless steel. The inner diameter of each of the first and second crimping sleeves 31 and 32 is formed to such a size that two wires 2 can be inserted into the cylinder. Each of the first and second crimping sleeves 31 and 32 is made of stainless steel. By forming the first and second crimping sleeves 31 and 32 from a non-ferrous material such as stainless steel, the corrosion resistance is improved as compared with the case where the crimping sleeve is made of iron. Each of the first and second crimping sleeves 31 and 32 is made of stainless steel, but may be made of a non-ferrous material other than stainless steel.

In assembling the fall prevention member 1, an operator (including a manufacturer and a manufacturing device) inserts a wire from the one end (first end) in the axial direction of the first crimping sleeve 31 into the cylinder of the first crimping sleeve 31. 2 is inserted. The operator bends the distal end side of the wire 2 exposed from the other end (second end) in the axial direction of the first crimping sleeve 31 in a loop shape, and returns the distal end portion 201 into the cylinder of the first crimping sleeve 31. Put in. The operator then uses the crimping tool (not shown) to push the first crimping sleeve 31 with the tip portion 201 of the wire 2 slightly exposed from one axial end side of the first crimping sleeve 31. By crimping, the wire 2 inserted into the cylinder of the first crimping sleeve 31 is fixed.

The second crimping sleeve 32 is the same as the first crimping sleeve 31. An operator inserts the wire 2 into the cylinder of the second crimping sleeve 32 from the one end (first end) side in the axial direction of the second crimping sleeve 32. The operator bends the distal end side of the wire 2 exposed from the other end (second end) in the axial direction of the second crimping sleeve 32 in a loop shape, and returns the distal end portion 202 into the cylinder of the second crimping sleeve 32. Put in. The operator then uses the crimping tool (not shown) to push the second crimping sleeve 32 with the tip end 202 of the wire 2 slightly exposed from one axial end of the second crimping sleeve 32. By tightening, the wire 2 inserted into the cylinder of the second crimping sleeve 32 is fixed.

Thus, after the 1st, 2nd loop parts 41 and 42 are formed in both ends (the 1st end and the 2nd end) of wire 2, an operator is the 1st for rust prevention and corrosion prevention. , 2 protective layers 51 and 52 are formed. The first protective layer 51 includes a first oxide film layer 61 and a first ceramic fired layer 71 which will be described later. The second protective layer 52 includes a second oxide film layer 62 and a second ceramic fired layer 72 described later. The operator forms the first protective layer 51 on the crimped portion of the first crimping sleeve 31 and the first loop portion 41, and the second protective layer 52 on the crimped portion of the second crimping sleeve 32 and the second loop portion 42. Form. First, the operator puts the tip side (B1 part in FIG. 1A) of the crimping part by the first crimping sleeve 31 into the plating tank, and the surface of the first crimping sleeve 31 and the first loop part 41 by electrogalvanizing. A first oxide film layer 61 made of a galvanized layer is formed on the surface. Next, in order to improve the adhesion, the worker performs a chemical conversion treatment on the first oxide film layer 61, dip-coats a ceramic material on the surface of the first oxide film layer 61, and then heats the first oxide film layer 61 for heating. A ceramic fired layer 71 is formed. FIG. 1C is a cross-sectional view of the first pressure-bonding sleeve 31, and the plating material enters the gap between the first pressure-bonding sleeve 31 and the wire 2 in the cylinder of the first pressure-bonding sleeve 31, and the first oxide film layer 61 is formed. ing. A first oxide film layer 61 made of zinc plating is also formed on the outer periphery of the first pressure-bonding sleeve 31, and a first ceramic fired layer 71 made of a ceramic material is formed on the surface thereof. The first loop portion 41 at the first end of the wire 2 is also formed with a galvanized first oxide film layer 61 on the surface, and a first ceramic fired layer 71 is formed outside the first oxide film layer 61. Is formed. 1C is a diagram for illustrating the relationship between the first protective layer 51, the wire 2, and the first crimping sleeve 31, and is not a diagram illustrating in detail the crimping and fixing by the first crimping sleeve 31. FIG. The crimping and fixing by the first crimping sleeve 31 may be performed at least at any part of the first crimping sleeve 31, and is not necessarily performed at the part of the line A1-A1.

Similarly, the operator puts the tip side (part B2 in FIG. 1A) of the crimping portion by the second crimping sleeve 32 into the plating tank, and the surface of the second crimping sleeve 32 and the second loop portion by electrogalvanizing. A second oxide film layer 62 made of a galvanized layer is formed on the surface of 42. Next, in order to improve adhesion, the worker performs a chemical conversion treatment on the second oxide film layer 62, dip-coats a ceramic material on the surface of the second oxide film layer 62, and then heats the second oxide film layer 62 by heating. A ceramic fired layer 72 is formed. FIG. 1D is a cross-sectional view of the second crimping sleeve 32, and the plating material enters the gap between the second crimping sleeve 32 and the wire 2 in the cylinder of the second crimping sleeve 32, and the second oxide film layer 62 is formed. ing. A second oxide film layer 62 made of zinc plating is also formed on the outer periphery of the second pressure-bonding sleeve 32, and a second ceramic fired layer 72 made of a ceramic material is formed on the surface thereof. The second loop portion 42 at the second end of the wire 2 is also formed with a second galvanized oxide film layer 62 on the surface, and a second ceramic fired layer 72 is formed outside the second oxide film layer 62. Is formed. FIG. 1D is a diagram for illustrating the relationship between the second protective layer 52, the wire 2, and the second crimping sleeve 32, and is not a diagram illustrating the crimping and fixing by the second crimping sleeve 32 in detail. The crimping and fixing by the second crimping sleeve 32 may be performed at least at any part of the second crimping sleeve 32, and is not necessarily performed at the part of line A2-A2 in FIG. 1A.

The fall prevention member 1 is used to prevent the floodlight 10 installed on the ceiling 20 from falling, as shown in FIG.

The projector 10 includes a box-shaped case 11 that holds a light source 15 and a lighting circuit (not shown) thereof, and the case 11 is suspended from the ceiling 20 via an arm 12. A reflecting mirror 13 that reflects light from the light source 15 and controls light distribution is attached to the lower side of the case 11. The mounting angle of the case 11 with respect to the arm 12 is adjustable around the axis 12 a of the arm 12, and the light from the light source 15 can be irradiated in a desired direction by changing the direction of the case 11.

Here, one end (first end) of the fall prevention member 1 is attached to the projector 10, and the other end (second end) of the fall prevention member 1 is attached to the ceiling 20. That is, the bolt 14 is passed through the first loop portion 41 on the one end (first end) side of the fall prevention member 1, and the bolt 14 is screwed into a screw hole (not shown) of the arm 12. Thereby, the first loop portion 41 is sandwiched between the head of the bolt 14 and the arm 12, and one end of the fall prevention member 1 is fixed to the arm 12. Further, a base portion of an embedded bolt 21 is embedded in the ceiling 20 near the place where the projector 10 is installed, and a nut 22 is screwed into the embedded bolt 21. The second loop portion 42 on the other end (second end) side of the fall prevention member 1 is passed through the embedded bolt 21, and the nut 23 is screwed into the embedded bolt 21, whereby the two nuts 22, 23 are connected. The second loop portion 42 is sandwiched therebetween, and the other end of the fall prevention member 1 is fixed to the ceiling 20. Here, the first fixing tool for fixing the first loop portion 41 provided on one end side of the wire 2 to the instrument main body (consisting of the case 11 and the arm 12) is configured from the bolt 14 screwed into the arm 12. . Further, the embedded bolt 21 and the nuts 22 and 23 constitute a second fixture for fixing the second loop portion 42 provided on the other end side of the wire 2 to a fixing portion (for example, the ceiling 20). In the present embodiment, the first fixing tool and the second fixing tool are constituted by bolts or the like. However, the first loop part 41 can be fixed to the instrument body, and the second loop part 42 can be fixed to the fixing part. If so, it can be appropriately changed.

Thus, one end of the fall prevention member 1 is attached to the projector 10, and the other end of the fall prevention member 1 is attached to the ceiling 20. Thereby, even when the arm 12 is dropped from the ceiling 20, the arm 12 is suspended from the ceiling 20 by the fall prevention member 1, so that the projector 10 can be prevented from falling.

As described above, the fall prevention member 1 of the present embodiment is used with both ends attached to the instrument body (case 11 and arm 12) and the fixed part (ceiling 20) of the projector 10. The fall prevention member 1 includes a wire 2 made of a non-ferrous material, a first crimp sleeve 31 made of a non-ferrous material, and a second crimp sleeve 32 made of a non-ferrous material. The first crimping sleeve 31 is crimped in a state where the wire 2 is inserted so that a portion where the first end portion of the wire 2 is bent in a loop shape is formed as the first loop portion 41. The second crimping sleeve 32 is crimped in a state in which the wire 2 is inserted so that a portion where the second end portion of the wire 2 is bent in a loop shape is formed as the second loop portion. The fall prevention member 1 includes a corrosion-resistant first protective layer 51 and a corrosion-resistant second protective layer 52. The first protective layer 51 is formed so as to cover at least the surface of the first pressure-bonding sleeve 31. The second protective layer 52 is formed so as to cover at least the surface of the second pressure-bonding sleeve 32.

The first and second crimping sleeves 31 and 32 in which the stress during crimping remains are more likely to corrode than the wire 2. However, since the corrosion-resistant first and second protective layers 51 and 52 cover the surfaces of the first and second pressure-bonding sleeves 31 and 32, the first and second protective layers 51 and 52 even when the fall prevention member 1 is used in a corrosive environment. Corrosion of the crimp sleeves 31 and 32 is less likely to proceed. Therefore, even when the fall prevention member 1 is used in a corrosive environment (for example, in the presence of ammonia) having a strong corrosive property such as a salt damage area, a chemical factory, a chemical factory, or an indoor pool, the first and second crimping sleeves 31 and 32 are used. It is difficult for the corrosion of the metal to progress, and the decrease in strength due to aging can be suppressed.

In addition, when the material of the wire 2 and the first and second crimping sleeves 31 and 32 are different, electrochemical corrosion occurs if the base of the wire 2 and the base of the first and second crimping sleeves 31 and 32 are in direct contact. there's a possibility that. However, in the present embodiment, the first and second oxide coating layers 61 and 62 are formed in the gap between the first and second crimping sleeves 31 and 32 and the wire 2. Therefore, the base of the wire 2 and the bases of the first and second crimping sleeves 31 and 32 are not in direct contact, and electrochemical corrosion can be suppressed.

Further, in the present embodiment, the corrosion-resistant first protective layer 51 is formed so as to cover the surface of the crimping portion by the first crimping sleeve 31 and the surface of the first loop portion 41, respectively. The corrosion-resistant second protective layer 52 is formed so as to cover the surface of the crimped portion by the second crimping sleeve 32 and the surface of the second loop portion 42. Since the corrosion of the first and second loop portions 41 and 42 is also suppressed by the first and second protective layers 51 and 52, it is possible to further suppress a decrease in strength of the fall prevention member 1. Further, when the material of the case 11 of the projector (lighting fixture) 10 is different from the material of the wire 2, if the base of the case 11 is in direct contact with the base of the wire 2, electrochemical corrosion may occur. There is. However, since the first loop portion 41 of the wire 2 is also covered with the first protective layer 51, the occurrence of electrochemical corrosion can be suppressed. Similarly, even when the material of the fixing portion of the ceiling 20 (that is, the embedded bolt 21 and the nuts 22 and 23) and the material of the wire 2 are different, the second loop portion 42 of the wire 2 is covered with the second oxide film layer 62. Therefore, the occurrence of electrochemical corrosion at the contact portion between the wire 2 and the fixed portion can be suppressed.

Further, in the present embodiment, the plating layer may be peeled off by bending the wire 2 at a portion (C1 in FIG. 1A) between the crimping portions by the first and second crimping sleeves 31 and 32 in the wire 2. Therefore, although the protective layer is not formed in FIG. 1A, the protective layer may be formed at this portion C1. The protective layer formed in the part C <b> 1 has the same material and configuration as the first protective layer 51 and the second protective layer 52, for example.

Preferably, like the fall prevention member 1 of the present embodiment, the first protective layer 51 includes a first oxide film layer 61 and a first ceramic fired layer 71, and the second protective layer 52 includes A dioxide coating layer 62 and a second ceramic fired layer 72 are included. The first oxide film layer 61 is formed on at least the surface of the first pressure-bonding sleeve 31. The first ceramic fired layer 71 is formed so as to cover the first oxide film layer 61. The second oxide film layer 62 is formed on at least the surface of the second pressure-bonding sleeve 32. The second ceramic fired layer 72 is formed so as to cover the second oxide film layer 62. That is, in the present embodiment, the first and second oxide film layers 61 and 62 that cover the surfaces of the first and second pressure-bonding sleeves 31 and 32 are formed, and the first and second oxide film layers 61 and 62 are further covered with the first oxide film layers 61 and 62. , 2 ceramic fired layers 71 and 72 are formed. As a result, the corrosion resistance is improved as compared with the case where each of the first and second protective layers 51 and 52 is only one layer, but each of the first and second protective layers 51 and 52 may be composed of only one layer. Good.

More preferably, like the fall prevention member 1 of the present embodiment, the first oxide film layer 61 is further formed in the cylinder of the first crimping sleeve 31 and between the first crimping sleeve 31 and the wire 2. ing. The second oxide film layer 62 is further formed in the cylinder of the second crimping sleeve 32 and between the second crimping sleeve 32 and the wire 2.

Moreover, the lighting fixture of this embodiment is provided with the fall prevention member 1 and the fixture main body (it consists of the case 11 and the arm 12) holding the light source 15. FIG. The first loop portion 41 provided on one end (first end) side of the wire 2 is fixed to the instrument body via a first fixing tool (for example, a bolt 14). The second loop portion 42 provided on the other end (second end) side of the wire 2 is fixed to a fixing portion (for example, the ceiling 20) via a second fixing tool (for example, the embedded bolt 21 and the nuts 22, 23). The Thus, since the fixture main body is being fixed to the fixed part using the fall prevention member 1 in which the strength reduction is suppressed, the possibility that the lighting fixture will fall can be reduced, and the safety of the lighting fixture will be improved. be able to.

In the present embodiment, the projector 10 is exemplified as the lighting fixture. However, the lighting fixture using the fall prevention member 1 is not limited to the projector 10, and is installed at a high place (such as a ceiling, an upper part of a wall, or a column). The present invention can be applied to various lighting fixtures (for example, street lamps and lighting fixtures in tunnels).

While the invention has been described in terms of several preferred embodiments, various modifications and variations can be made by those skilled in the art without departing from the true spirit and scope of the invention, ie, the claims.

Claims (5)

Both ends are fall prevention members attached to the fixture body of the lighting fixture and the fixed part to which the fixture body is fixed,
A wire of non-ferrous material,
A first crimp sleeve of a non-ferrous material that is crimped in a state where the wire is inserted so that a portion where the first end portion of the wire is bent in a loop shape is formed as a first loop portion;
A second crimping sleeve made of a non-ferrous material that is crimped in a state where the wire is inserted so that a portion where the second end portion of the wire is bent in a loop shape is formed as a second loop portion;
A first corrosion-resistant protective layer formed to cover at least the surface of the first pressure-bonding sleeve;
A fall-preventing member, comprising: a corrosion-resistant second protective layer formed to cover at least the surface of the second pressure-bonding sleeve. The first protective layer is formed so as to cover the surface of the crimping portion by the first crimping sleeve and the surface of the first loop portion, respectively.
2. The fall prevention member according to claim 1, wherein the second protective layer is formed so as to cover a surface of a pressure-bonded portion by the second pressure-bonding sleeve and a surface of the second loop portion. The first protective layer includes
A first oxide film layer formed on at least the surface of the first pressure-bonding sleeve;
A first ceramic fired layer formed to cover the first oxide film layer,
The second protective layer is
A second oxide film layer formed on at least the surface of the second pressure-bonding sleeve;
The fall prevention member according to claim 1, further comprising a second ceramic fired layer formed to cover the second oxide film layer. The first oxide film layer is further formed in a cylinder of the first pressure-bonding sleeve and between the first pressure-bonding sleeve and the wire,
The fall prevention member according to claim 3, wherein the second oxide film layer is further formed in a cylinder of the second pressure-bonding sleeve and between the second pressure-bonding sleeve and the wire. The fall prevention member according to any one of claims 1 to 4,
An instrument body for holding a light source,
The first loop portion provided on the first end side of the wire is fixed to the instrument body via a first fixture;
The lighting apparatus, wherein the second loop portion provided on the second end side of the wire is fixed to the fixing portion via a second fixing tool.

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