JP5979378B2 - Fall prevention member and lighting apparatus using the same - Google Patents

Description

  The present invention relates to a fall prevention member and a lighting fixture using the same.

  Conventionally, there is a lighting fixture that is used by being installed at a high place such as a ceiling. In such a lighting fixture, a fall prevention member is attached to the lighting device in order to take multiple safety measures (see, for example, Patent Document 1). ).

  The fall prevention member disclosed in Patent Document 1 is made of a metal wire, covered with a cylindrical sleeve in a state where the end of the wire is annular, and by crushing the sleeve, the annular portions are formed at both ends of the wire. Is formed. 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.

JP 2003-308719 A

  By the way, even when the lighting device described in Patent 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.

  This invention is made | formed in view of the said subject, The place made into the objective is to provide the fall prevention member which suppressed the fall of the intensity | strength by corrosion, and a lighting fixture using the same.

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

  In this fall prevention member, it is also preferable that the protective layer is formed so as to cover the surface of the crimping portion by the crimping sleeve and the surface of the loop portion.

  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 loop portion provided on one end side of the wire is fixed to a fixing portion via a first fixture, The loop part provided in the end side is fixed to an instrument main body through a 2nd fixing tool, It is characterized by the above-mentioned.

  According to the fall-preventing member of the present invention, the surface of the crimped portion of the crimping sleeve is covered with a corrosion-resistant protective layer. A decrease in strength can be suppressed.

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

The fall prevention member of this embodiment is shown, (a) is a top view, (b) is a rear view of the principal part, (c) is an AA sectional view. It is a construction state figure of the lighting fixture which uses the fall prevention member same as the above.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

  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, and FIG.

  The fall prevention member 1 includes, for example, a wire 2 formed by cutting a stainless steel wire to a desired length, and a crimping sleeve 3 that crimps and fixes the end of the wire 2 in a loop shape. 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.

  The crimp sleeve 3 is formed in a cylindrical shape, for example, from stainless steel. The inner diameter of the crimp sleeve 3 is formed so as to allow the two wires 2 to be inserted into the cylinder. The pressure-bonding sleeve 3 is made of stainless steel. By forming the pressure-bonding sleeve 3 from a non-ferrous material such as stainless steel, the corrosion resistance is improved as compared with the case where the pressure-bonding sleeve 3 is formed of iron. The crimp sleeve 3 is made of stainless steel, but may be made of a non-ferrous material other than stainless steel.

  When assembling the fall prevention member 1, the operator inserts the wire 2 into one end of the crimp sleeve 3 from the one end side in the axial direction, and the tip end side of the wire 2 exposed from the other end side in the axial direction of the crimp sleeve 3. Is bent into a loop shape, and its tip 2a is returned into the cylinder of the crimping sleeve 3. Then, the operator crimps the crimping sleeve 3 by using a crimping tool (not shown) with the tip 2a of the wire 2 slightly exposed from one axial end of the crimping sleeve 3. The wire 2 inserted into the cylinder of the sleeve 3 is fixed.

  In this way, after the loop portions 4 are formed at both ends of the wire 2, the operator applies a protective layer 5 (which will be described later) to the anticorrosion and anticorrosion to the crimping portion and the loop portion 4 by the crimping sleeve 3. A coating layer 6 and a ceramic fired layer 7). First, the operator puts the tip side (part B in FIG. 1) of the crimping portion by the crimping sleeve 3 into a plating tank, and galvanizes the surface of the crimping sleeve 3 and the surface of the loop portion 4 by electrogalvanizing. An oxide film layer 6 composed of layers is formed. Next, the worker performs a chemical conversion treatment on the oxide film layer 6 in order to improve adhesion, dip-coats a ceramic material on the surface of the oxide film layer 6, and then forms the ceramic fired layer 7 by heating. To do. FIG. 1C is a cross-sectional view of a crimping portion of the crimping sleeve 3, and a plating material enters the gap between the crimping sleeve 3 and the wire 2 to form an oxide film layer 6. An oxide film layer 6 made of zinc plating is also formed on the outer periphery of the crimp sleeve 3, and a ceramic fired layer 7 made of a ceramic material is formed on the surface thereof. A galvanized oxide film layer 6 is formed on the surface of the loop portion 4 at the end of the wire 2, and a ceramic fired layer 7 is formed outside the oxide film layer 6.

  As shown in FIG. 2, the fall prevention member 1 is used to prevent the floodlight 10 installed on the ceiling 20 from falling.

  The projector 10 includes a box-shaped case 11 that holds a light source (not shown) and a lighting circuit (not shown). The case 11 is suspended from the ceiling 20 via an arm 12. A reflecting mirror 13 that reflects light from the light source 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 12a of the arm 12, and the light from the light source can be irradiated in a desired direction by changing the direction of the case 11.

  Here, 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. That is, the bolt 14 is passed through the loop portion 4 on one end side of the fall prevention member 1, and the bolt 14 is screwed into a screw hole (not shown) of the arm 12. The loop portion 4 is sandwiched between the ends, 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 loop portion 4 on the other 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 loop is sandwiched between the two nuts 22, 23. The other end of the fall prevention member 1 is fixed to the ceiling 20. Here, the bolt 14 screwed into the arm 12 constitutes a first fixture for fixing the loop portion 4 provided on one end side of the wire 2 to the instrument body (consisting of the case 11 and the arm 12). The embedded bolt 21 and the nuts 22 and 23 constitute a second fixture for fixing the loop portion 4 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, but can be appropriately changed as long as the loop portion 4 can be fixed to the fixing portion or the instrument body.

  As described above, 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 projector 10 and the ceiling 20 (fixed part), respectively. This fall prevention member 1 forms a loop portion 4 at an end portion of the wire 2 by being crimped in a state where a wire 2 of a non-ferrous material and a portion where the end portion of the wire 2 is bent into a loop shape are inserted A crimp sleeve 3; A corrosion-resistant protective layer 5 is formed so as to cover at least the surface of the crimp sleeve 3.

  The crimp sleeve 3 in which the stress at the time of crimping remains is more susceptible to corrosion than the wire 2, but the anti-drop member 1 is in a corrosive environment because the corrosion-resistant protective layer 5 covers the surface of the crimp sleeve 3. Even when used, the corrosion of the crimp sleeve 3 is less likely to proceed. Therefore, even when the fall prevention member 1 is used in a highly corrosive corrosive environment (for example, in the presence of ammonia) such as a salt damage area, a chemical factory, a chemical factory, or an indoor pool, the corrosion of the crimp sleeve 3 is difficult to proceed. It is possible to suppress a decrease in strength due to aging.

  Moreover, when the material of the wire 2 and the crimping sleeve 3 is different, electrochemical corrosion may occur if the base of the wire 2 and the base of the crimping sleeve 3 are in direct contact. In this embodiment, An oxide film layer 6 is formed in the gap between the crimp sleeve 3 and the wire 2. Therefore, the base of the wire 2 and the base of the crimp sleeve 3 are not in direct contact, and electrochemical corrosion can be suppressed.

  In the present embodiment, the corrosion-resistant protective layer 5 is provided so as to cover the surface of the pressure-bonding sleeve 3 and the loop portion 4, and the corrosion of the loop portion 4 is also suppressed by the protective layer 5. Further reduction in strength can be suppressed. Moreover, when the material of the case 11 of the lighting fixture 10 and the material of the wire 2 are different, if the base of the case 11 is in direct contact with the base of the wire 2, electrochemical corrosion may occur. Since the loop portion 4 of the wire 2 is also covered with the protective layer 5, 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) is different from the material of the wire 2, the loop portion 4 of the wire 2 is covered with the oxide film layer 6. The occurrence of electrochemical corrosion at the contact portion between the wire 2 and the fixed portion can be suppressed.

  Further, in this embodiment, the portion of the wire 2 between the crimping portions of the crimping sleeve 3 (C portion in FIG. 1A) may be peeled off due to the bending of the wire 2, so that the protection is possible. Although the layer 6 is not formed, the protective layer 6 may be formed in this portion C.

  In the present embodiment, the oxide film layer 6 covering the surface of the pressure-bonding sleeve 3 is formed, and further the ceramic fired layer 7 covering the surface of the oxide film layer 6 is formed, so that the protective layer 5 is only one layer. However, the protective layer 5 may be composed of only one layer.

  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 a light source. The loop portion 4 provided on one end side of the wire 2 is fixed to a fixing portion (for example, the ceiling 20) via a first fixture (for example, a bolt 14), and the loop portion 4 provided on the other end side of the wire 2 is It is fixed to the instrument body via a second fixing tool (for example, embedded bolt 21 and nuts 22 and 23). 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).

DESCRIPTION OF SYMBOLS 1 Fall prevention member 2 Wire 2a Tip part 3 Crimp sleeve 4 Loop part 5 Protective layer 6 Oxide film layer 7 Ceramic fired layer 10 Floodlight (lighting fixture)
20 Ceiling 21 Embedded bolt (fixed part)
22,23 Nut

Claims (3)

Both ends are fall prevention members attached to the luminaire and the fixed part,
A wire of non-ferrous material,
A crimp sleeve of a non-ferrous material that forms a loop portion at the end of the wire by being crimped in a state where a portion where the end of the wire is bent in a loop shape is inserted;
A fall prevention member comprising a corrosion-resistant protective layer formed to cover at least the surface of the crimp sleeve.   The fall prevention member according to claim 1, wherein the protective layer is formed so as to cover a surface of a crimping portion by the crimping sleeve and a surface of the loop portion. A fall prevention member according to any one of claims 1 and 2, and an instrument main body for holding a light source,
The loop portion provided on one end side of the wire is fixed to the instrument body via a first fixture, and the loop portion provided on the other end side of the wire is fixed via a second fixture. A lighting apparatus characterized by being fixed to a part.

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