WO2023068046A1 - 金属プレート及び配線器具 - Google Patents

金属プレート及び配線器具 Download PDF

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Publication number
WO2023068046A1
WO2023068046A1 PCT/JP2022/037251 JP2022037251W WO2023068046A1 WO 2023068046 A1 WO2023068046 A1 WO 2023068046A1 JP 2022037251 W JP2022037251 W JP 2022037251W WO 2023068046 A1 WO2023068046 A1 WO 2023068046A1
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WO
WIPO (PCT)
Prior art keywords
metal plate
plate
bottom plate
metal
side walls
Prior art date
Application number
PCT/JP2022/037251
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English (en)
French (fr)
Japanese (ja)
Inventor
庸 吉村
英人 多田
久志 熊本
忍 冨田
侑紀 佐藤
三代佳 原
Original Assignee
パナソニックホールディングス株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニックホールディングス株式会社 filed Critical パナソニックホールディングス株式会社
Priority to CN202280061644.4A priority Critical patent/CN118019601A/zh
Priority to JP2023554438A priority patent/JPWO2023068046A1/ja
Publication of WO2023068046A1 publication Critical patent/WO2023068046A1/ja

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/26—Deep-drawing for making peculiarly, e.g. irregularly, shaped articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/30—Deep-drawing to finish articles formed by deep-drawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/18—Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/08—Upsetting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group
    • B21K21/16—Remodelling hollow bodies with respect to the shape of the cross-section
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details

Definitions

  • the present disclosure relates to metal plates and wiring devices.
  • a magnesium alloy thin plate material is formed by forging, the thickness of the main part consisting of the bottom part and the peripheral wall part is 1.5 mm or less, and the rising inner corner part and / or outer corner part of the wall part is chamfered.
  • a magnesium alloy forged thin molded body having a radius of 1 mm or less, a wall portion of 30 mm or less in height, and a boss portion having a thickness of 10 times or less of the thickness of the main portion is disclosed.
  • Patent Document 1 discloses a forged compact specialized for magnesium alloys, there is a demand to ensure the strength of the corners of other general metal plates as well.
  • the present disclosure does not specialize in magnesium alloys, and is a metal plate that can suppress the increase in manufacturing costs while ensuring the strength of the corners so that it can be applied to general metal plates.
  • the object is to provide a plate and a wiring device.
  • a metal plate according to an aspect of the present disclosure includes a rectangular bottom plate and a plurality of side walls standing from a peripheral edge of the bottom plate, and formed by two adjacent side walls of the plurality of side walls, or The thickness of the corner formed by one side wall and the bottom plate is 40% or more of the reference thickness of the bottom plate.
  • the wiring device includes a metal plate as a plate that covers the main body so that it can be applied to general metal plates without specializing in magnesium alloys.
  • the strength of the metal plate is ensured so that the metal plate can be applied to general metal plates without specializing in magnesium alloys, and the rise in manufacturing costs can be prevented. can be suppressed.
  • FIG. 2A is a perspective view showing the appearance when looking at the surface of the metal plate according to the embodiment.
  • FIG. 2B is a perspective view showing the appearance when looking at the back surface of the metal plate according to the embodiment.
  • FIG. 3 is a cross-sectional view showing corners of the metal plate taken along line III-III in FIG. 2A.
  • FIG. 4A is a diagram showing a state before pressing a mold when manufacturing a metal plate.
  • FIG. 4B is a diagram showing the state after pressing the mold when manufacturing the metal plate.
  • FIG. 5 is a diagram showing plate thicknesses of a metal plate immediately after forging and a metal plate subjected to secondary processing.
  • FIG. 6 is a diagram showing the thickness of each metal plate of a comparative example.
  • FIG. 7 is a diagram showing the hardness and the like of a metal plate immediately after forging, a metal plate subjected to secondary processing, and a metal plate of a comparative example.
  • each figure is a schematic diagram and is not necessarily strictly illustrated. Moreover, in each figure, the same code
  • expressions such as substantially parallel and rectangular parallelepiped are used.
  • substantially parallel or “rectangular parallelepiped” means not only “perfectly parallel” or “perfectly rectangular parallelepiped”, but also “substantially parallel” or “substantially rectangular parallelepiped”, i.e., including an error of about several percent. also means
  • substantially parallel and “rectangular parallelepiped” mean “parallel” and "straight line” within the range in which the effects of the present disclosure can be achieved. The same is true for expressions using other “abbreviation” and “shape”.
  • the lateral direction of the metal plate is defined as the X-axis direction
  • the longitudinal direction of the metal plate is defined as the Y-axis direction
  • the direction orthogonal to the X-axis direction and the Y-axis direction is the Z-axis direction.
  • direction the left side of FIG. 1 in the X-axis direction is defined as the positive direction side
  • the upper side of FIG. 1 in the Y-axis direction is defined as the positive direction side
  • FIG. 1 is a perspective view showing the appearance of the wiring device 1 according to the embodiment.
  • the wiring device 1 is, for example, a connection device that supplies power to a facility system such as a lighting device and a blower installed in a facility, and cuts off the power supply.
  • the wiring accessories 1 are embedded in structures such as ceilings and walls.
  • the wiring device 1 is, for example, an outlet or a switch.
  • the wiring accessory 1 is formed in a vertically long rectangular parallelepiped shape along the Y-axis direction.
  • the switch body 2 of the wiring device 1 is inserted into the through hole 20a of the metal plate 10 .
  • the metal plate 10 and the switch body 2 are directly or indirectly connected to each other while part of the switch body 2 of the wiring device 1 is exposed from the through hole 20a of the metal plate 10.
  • the wiring device 1 includes a switch body 2 and a metal plate 10.
  • the switch body 2 is a switch device that electrically connects or disconnects an electrically connected electric wire.
  • the switch body 2 is an example of a body.
  • the switch main body 2 is composed of a housing, a pair of terminals, a locking spring, an operation section, a handle 4, and the like.
  • the housing has a rectangular parallelepiped shape elongated along the X-axis direction, and accommodates a pair of terminals, a locking spring, and the like.
  • Each of the pair of terminals is a quick-connect terminal made of a highly conductive metal material.
  • a handle 4 is rotatably arranged on the surface of the operating portion on the Z-axis negative direction side. For example, when the operation portion of the switch body 2 is pushed by the handle 4, the movable contact of one terminal of the pair of terminals and the fixed contact of the other terminal of the pair of terminals come into contact with each other. , can be electrically connected. Further, when the operating portion of the switch body 2 is pushed by the handle 4 again after that, the movable contact of the terminal and the fixed contact of another terminal are separated from each other, so that the switch body 2 can be cut off.
  • the switch body 2 is an opening/closing device that switches the contact between the ON state and the OFF state according to the switching operation of the handle 4 .
  • FIG. 2A is a perspective view showing the appearance of the surface 11a of the metal plate 10 according to the embodiment.
  • FIG. 2B is a perspective view showing the appearance when looking at the back surface 11c of the metal plate 10 according to the embodiment.
  • the metal plate 10 is a rectangular frame attached to a structure.
  • a through hole 20 a for mounting the switch body 2 is formed in the center of the metal plate 10 .
  • the through hole 20a is formed in the central portion of the metal plate 10, but the through hole 20a may not be formed in the central portion of the metal plate 10. good.
  • the metal plate 10 may be a plate that covers the switch body 2 .
  • the metal plate 10 is made of a metal material.
  • a metal material is a material whose main component is metal such as iron, aluminum, or copper.
  • the surface roughness of the metal plate 10 measured by the new JIS measurement method is in the range of 1.0 to 3.0 ( ⁇ m). That is, on the surface 11a of the metal plate 10, a plurality of linear grooves extending along a predetermined direction are formed, or a plurality of circular grooves are formed. Such surface processing of the metal plate 10 is performed by machining. Specifically, the linear grooves extending along a predetermined direction can be formed by subjecting the surface 11a of the metal plate 10 to hairline processing. Also, the circular grooves can be formed by subjecting the surface 11a of the metal plate 10 to vibration processing.
  • the surface 11a of the metal plate 10 is the surface of the metal plate 10 on the Z-axis negative direction side.
  • the surface roughness of the surface 11a of the metal plate 10 subjected to vibration processing is 2.275 ( ⁇ m).
  • an aluminum oxide film is formed on the surface 11a of the metal plate 10 .
  • Such surface processing of the metal plate 10 is performed by chemical processing.
  • the aluminum oxide film can be formed by anodizing the surface 11a of the metal plate 10 .
  • the metal plate 10 has a bottom plate 11 and a plurality of side walls 12 .
  • the bottom plate 11 has a rectangular plate shape.
  • the bottom plate 11 is a rectangular plate elongated along the Y-axis direction.
  • the bottom plate 11 is a flat plate substantially parallel to the XY plane.
  • the plurality of side walls 12 are erected from the peripheral edge portion 11b of the bottom plate 11.
  • the peripheral edge portion 11 b of the bottom plate 11 is the outer peripheral edge of the bottom plate 11 . That is, the plurality of side walls 12 are formed along the peripheral edge portion 11b of the bottom plate 11 and are formed so as to rise along the Z-axis plus direction side. Therefore, the plurality of side walls 12 are arranged so as to surround the back surface 11 c of the bottom plate 11 .
  • the back surface 11c of the bottom plate 11 is the surface of the bottom plate 11 on the Z-axis positive direction side, and is the surface of the metal plate 10 opposite to the front surface 11a of the bottom plate 11 .
  • the bottom plate 11 is rectangular, four side walls 12 are formed on the bottom plate 11 .
  • the four side walls 12 arranged on the peripheral edge portion 11b of the bottom plate 11 are arranged so as to surround the back surface 11c of the metal plate 10 .
  • Such a metal plate 10 has corners 13 a formed by two side walls 12 adjacent to each other or formed by one side wall 12 and the bottom plate 11 .
  • the corner portion 13 a includes a corner portion 13 formed by two adjacent side walls 12 among the plurality of side walls 12 and the bottom plate 11 .
  • Metal plate 10 of the present embodiment has four corners 13 formed by one bottom plate 11 and four side walls 12 .
  • FIG. 3 is a cross-sectional view showing corner 13 of metal plate 10 taken along line III-III in FIG. 2A.
  • the corner portion 13 of the present embodiment is formed by two adjacent side walls 12 among the plurality of side walls 12 and the bottom plate 11.
  • the lower limit of the thickness of the corner portion 13 is 40% or more of the reference thickness of the bottom plate 11 of the metal plate 10 .
  • the plate thickness W1 at the corner portion 13 is set to 40% or more of the reference thickness.
  • the lower limit value may be set to a thickness that is 40% to 50% of the reference thickness.
  • the upper limit of the thickness of the corner portion 13 is less than 85% of the reference thickness of the bottom plate 11 of the metal plate 10 .
  • the side wall 12 of the metal plate 10 has a thickness of 1.108 (mm)
  • the bottom plate 11 has a thickness of 0.988 (mm)
  • the peripheral portion 11b has a thickness of 1.137 (mm)
  • the plate thickness of the corner portion 13 is 0.625 (mm).
  • the plate thicknesses of side wall 12, bottom plate 11, peripheral edge portion 11b, and corner portion 13 of metal plate 10 are examples, and are not limited to the present embodiment.
  • the reference thickness is the plate thickness of the bottom plate 11 .
  • the reference thickness is the thickness at the midpoint between the through hole 20 a and the peripheral edge portion 11 b of the bottom plate 11 .
  • the reference thickness when the through hole 20 a is not formed in the bottom plate 11 is the plate thickness at the central portion of the bottom plate 11 .
  • the reference thickness is 1 (mm).
  • the reference thickness may be an average value of the plate thickness of the bottom plate 11 excluding the peripheral edge portion 11b, the corner portions 13 and the through holes 20a.
  • the plurality of side walls 12 are forged products. That is, the plurality of side walls 12 are forged products that are formed into predetermined shapes by being pressed. Therefore, the plate thickness of the plurality of side walls 12 is thicker than the plate thickness of the bottom plate 11 . Also, when the plurality of side walls 12 are forged, the corners 13 are formed as if they were chamfered. Note that the bottom plate 11 may be a cast product or a forged product.
  • the switch body 2 may be directly connected to the metal plate 10 by a fastening member such as a screw or a fastening mechanism.
  • the metal plate 10 may be indirectly connected to the switch main body 2 via a switch connecting body (not shown). This switch connector can connect the switch body 2 and the metal plate 10 .
  • FIG. 4A is a diagram showing a state before pressing a mold when manufacturing the metal plate 10.
  • FIG. 4B is a diagram showing a state after the mold is pressed when manufacturing the metal plate 10.
  • a base plate consisting of a rectangular base bottom plate 111 and a plurality of base side walls 112 is prepared.
  • This base plate is a metal plate at a stage before forming the metal plate 10 of the present embodiment.
  • the base plate may be molded by die casting or pressing.
  • the base plate may be molded by pouring molten metal into a cavity formed by combining multiple molds and solidifying it.
  • the base plate may be molded by pressing a metal plate-like original plate with a mold such as a rectangular punch.
  • Mold A is arranged below the base plate
  • mold B is arranged on the outer peripheral side of the plurality of base side walls 112 of the base plate
  • mold C is arranged on the inner peripheral side of the plurality of base side walls 112 of the base plate.
  • the mold D presses the base side wall 112 by inserting the mold D into this gap.
  • the base side wall 112 is forged by being pressed by a mold D.
  • the side wall 12 having a thickness greater than that of the base bottom plate 111 and the base side wall 112 is formed.
  • the mold B has an arc-shaped curved portion B1 at a location corresponding to the boundary portion between the base side wall 112 and the base bottom plate 111, when the base side wall 112 is pressed by the mold D, The shape of the curved portion B ⁇ b>1 is transferred to the boundary portion between the base side wall 112 and the base bottom plate 111 . Therefore, when the base side wall 112 is pressed by the die D, forging starts, and the die D pushes the base side wall 112 to the position of the bottom dead center in FIG. A corner portion 13 is formed along with the .
  • the surface 11a side of the metal plate 10 in the peripheral portion 11b is chamfered to C0.5. That is, by forging the plurality of side walls 12, the peripheral portion 11b is given a shape of C0.5.
  • FIGS. 5, 6 and 7 are shown for the measurement results of the metal plates A, B and C immediately after forging, the secondary processed metal plates A1, B1 and C1 and the comparative example metal plates A2, B2 and C2.
  • the metal plates A, B, C and the secondary processed metal plates A1, B1, C1 correspond to the metal plate 10 of this embodiment.
  • the secondary-processed metal plates A1, B1, and C1 are metal plates after being subjected to hairline processing, vibration processing, alumite processing, and the like.
  • FIG. 5 is a diagram showing the plate thicknesses of the metal plates A, B, and C immediately after forging, the metal plates A1, B1, and C1 subjected to secondary processing, and the metal plates A2, B2, and C2 of comparative examples.
  • FIG. 6 is a diagram showing the respective plate thicknesses of metal plates A2, B2, and C2 of a comparative example.
  • FIG. 7 is a diagram showing the hardness and the like of a metal plate immediately after forging, a metal plate subjected to secondary processing, and a metal plate of a comparative example.
  • the plate thicknesses of a peripheral edge portion NO7 near the corner, a boundary portion NO8 between two adjacent sidewalls, another boundary portion NO9 between two adjacent sidewalls, a further peripheral edge portion NO10, and another bottom plate central portion NO11 are illustrated.
  • NO1 to NO11 in the metal plate A immediately after forging are 74.7, 90.4, 90.3, 92.8, 86.6, 90.1, 85.1, 84.8, 97.8 , 89.5 and 80.5 (mm).
  • the above NO1 to NO11 in the metal plate B immediately after forging are 80.0, 91.6, 93.3, 98.0, 93.8, 83.6, 83.2, 88.9, 91 .4, 92.2 and 85.4 (mm).
  • the above NO1 to NO11 in the metal plate C immediately after forging are 75.5, 90.6, 92.8, 94.1, 89.2, 88.9, 87.5, 92.9, 92 .2, 94.3 and 82.5 (mm).
  • the above NO1 to NO11 in the secondary processed metal plate A1 are 79.8, 99.4, 92.4, 102.7, 100.5, 93.6, 93.9, 101.3, 96. 0, 92.1 and 81.7 (mm).
  • the above NO1 to NO11 in the secondary processed metal plate B1 are 75.8, 98.3, 93.0, 93.6, 108.3, 92.5, 92.4, 112.6, 115. 1, 95.6, and 78.8 (mm).
  • the above NO1 to NO11 in the secondary processed metal plate C1 are 82.1, 109.3, 92.1, 100.8, 101.9, 94.8, 92.3, 94.4, 107. 1, 95.1, and 81.4 (mm).
  • the plate at the bottom plate central portion NO1, the peripheral edge NO2, the peripheral edge NO3 near the corner, the peripheral edge NO4 near the corner, the peripheral edge NO5, the peripheral edge NO6, the corner NO7, thickness is exemplified.
  • the above NO1 to NO9 in the metal plate A2 of the comparative example are 35.3, 32.6, 25.1, 33.4, 35.1, 36.3, 230.1, 215.8, 254.9 (mm).
  • the above NO1 to NO9 in the metal plate B2 of the comparative example are 41.1, 36.5, 26.8, 29.1, 29.6, 40.7, 229.5, 204.6, 251.6 (mm).
  • the above NO1 to NO9 in the metal plate C2 of the comparative example are 38.0, 39.5, 28.7, 33.1, 31.4, 43.9, 233.2, 206.2, 250.1 (mm).
  • this measurement result includes an error that occurs in general measurement of plate thickness.
  • the metal plates A, B, and C immediately after forging and the secondary processed metal plates A1, B1, and C1 have smaller variations in thickness than the metal plates A2, B2, and C2 of the comparative examples. was gotten.
  • the base material hardness indicates the average value of the base material surface hardness and the base material back surface hardness.
  • the base material surface hardness indicates the average value of NO1 in FIG.
  • the back surface hardness of the base material indicates the average value of NO11 in FIG.
  • the forged surface hardness indicates the average value of NO2-NO10 in FIG.
  • the base material hardness comparison is calculated by (forging surface hardness - base material hardness)/base material hardness.
  • the maximum-minimum value ratio is [(maximum value among NO1-NO11 in FIG. 5)-(minimum value among NO1-NO11 in FIG. 5)]/(minimum value among NO1-NO11 in FIG. value).
  • the base material hardness indicates the average value of the base material surface hardness and the base material back surface hardness.
  • the base material surface hardness indicates the average value of NO8 in FIG.
  • the back surface hardness of the base material indicates the average value of NO7 in FIG.
  • the forged surface hardness indicates the average value of NO9 in FIG.
  • the base material hardness comparison is calculated by (forging surface hardness - base material hardness)/base material hardness.
  • the maximum/minimum value ratio is [(maximum value of NO7-NO9 in FIG. 6)-(minimum value of NO7-NO9 in FIG. 6)]/(minimum value of NO7-NO9 in FIG. value).
  • the base material hardness of the metal plate immediately after forging is 79.8, the surface hardness of the base material of the metal plate immediately after forging is 76.7, the back surface hardness of the base material of the metal plate immediately after forging is 82.8, and the hardness of the metal plate immediately after forging is The forged surface hardness is 90.6, the base material hardness comparison of the metal plate immediately after forging is 0.1356, and the maximum/minimum value ratio of the metal plate immediately after forging is 0.3119.
  • the secondary processed metal plate has a base material hardness of 79.9, the secondary processed metal plate has a base material surface hardness of 79.2, and the secondary processed metal plate has a base material back surface hardness of 80.6.
  • the forged surface hardness of the fabricated metal plate is 98.6, the base metal hardness comparison of the secondary metal plate is 0.2330, and the maximum/minimum value ratio of the secondary metal plate is 0.5185.
  • the base material hardness of the metal plate of the comparative example is 219.9
  • the base material surface hardness of the metal plate of the comparative example is 208.9
  • the base material back surface hardness of the metal plate of the comparative example is 230.9
  • the hardness of the metal plate of the comparative example is The forged surface hardness is 252.2
  • the base material hardness comparison of the metal plate of the comparative example is 0.1469
  • the maximum/minimum value ratio of the metal plate of the comparative example is 0.2458.
  • the forged sidewalls 12 and corners 13 are harder than the non-forged bottom plate 11 than the metal plate of the comparative example. The result is that it is enhanced.
  • the metal plate 10 of the present embodiment includes a rectangular bottom plate 11 and a plurality of side walls 12 erected from the peripheral edge portion 11 b of the bottom plate 11 .
  • the thickness of the corner portion 13 formed by two adjacent side walls 12 among the plurality of side walls 12 or formed by one side wall 12 and the bottom plate 11 is the reference thickness of the bottom plate 11 of the metal plate 10. is 40 or more for
  • the plate thickness of the corner portion 13 is at least 40% or more of the reference thickness of the bottom plate 11 of the metal plate 10, the strength of the metal plate 10 can be ensured.
  • bottom plate 11 and the plurality of side walls 12 can be formed, there is no need to cut the formed product as in the prior art, and time is spent in manufacturing the metal plate 10, which reduces the manufacturing cost. It becomes difficult to grow.
  • the metal plate 10 can be applied to a general metal plate without specializing in a magnesium alloy, while ensuring the strength of the metal plate 10, and suppressing an increase in manufacturing costs. can.
  • the wiring device 1 of the present embodiment includes a metal plate 10 as a plate that covers the main body.
  • This wiring device 1 also has the same effects as described above.
  • the plate thickness at the corners 13 is less than 85% of the reference thickness of the bottom plate 11 of the metal plate 10 .
  • the strength of the corners 13 of the metal plate 10 can be ensured.
  • the plurality of side walls 12 are forged products.
  • the strength of the plurality of side walls 12 can be ensured. Therefore, even if a worker accidentally drops the metal plate 10 when attaching the metal plate 10 to a building, for example, the metal plate 10 is less likely to be deformed.
  • the plurality of sidewalls 12 can be formed by forging, there is no need to machine the formed product as in the prior art, which reduces manufacturing costs by spending time in manufacturing the metal plate 10. It is difficult to grow. That is, with this metal plate 10, it is possible to suppress an increase in manufacturing costs.
  • the surface roughness of the metal plate 10 measured by the new JIS measurement method is in the range of 1.0 to 3.0 ( ⁇ m).
  • a desired pattern can be formed on the surface 11 a of the metal plate 10 .
  • the surface 11a of the metal plate 10 is formed with a plurality of linear grooves extending along a predetermined direction, or formed with a plurality of circular grooves. ing.
  • a plurality of linear patterns, a plurality of circular patterns, and the like can be formed on the surface 11a of the metal plate 10, so that the metal plate 10 can be improved in appearance.
  • an aluminum oxide film is formed on the surface 11a of the metal plate 10 .
  • the aluminum oxide film formed on the surface 11a of the metal plate 10 can provide the metal plate 10 with excellent corrosion resistance and wear resistance.
  • 1 wiring device 2 switch main body (main body) REFERENCE SIGNS LIST 10 metal plate 11 bottom plate 11a surface 11b peripheral portion 12 side wall 13, 13a corner portion

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forging (AREA)
  • Casings For Electric Apparatus (AREA)
PCT/JP2022/037251 2021-10-20 2022-10-05 金属プレート及び配線器具 WO2023068046A1 (ja)

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CN202280061644.4A CN118019601A (zh) 2021-10-20 2022-10-05 金属板及配线器具
JP2023554438A JPWO2023068046A1 (enrdf_load_stackoverflow) 2021-10-20 2022-10-05

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JP2021-171990 2021-10-20
JP2021171990 2021-10-20

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CN (1) CN118019601A (enrdf_load_stackoverflow)
TW (1) TW202319140A (enrdf_load_stackoverflow)
WO (1) WO2023068046A1 (enrdf_load_stackoverflow)

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JP2014221493A (ja) * 2014-09-02 2014-11-27 住友電気工業株式会社 プレス体

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