Take-up driving device

Abstract

To provide a winding drive device without requiring installation of an earth cable.SOLUTION: A winding drive device 1 of an electric opening-closing device 100 includes a metal case 2 that houses a motor 3, and a substrate 4 that is arranged in the case 2. A charging part 42 on the substrate 4 is arranged away from the case 2, and the substrate 4 is covered with an insulating sheet 5 . It is preferable that the case 2 and the substrate 4 are connected by insulating fixing means 6 via the sheet 5 . It is preferable that the fixing means 6 has a resin support member 61 that supports the lower side of the substrate 4, and the support member 61 is connected to the case 2 .SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to a winding drive device.

Background Art

[0002] Conventionally, an electric opening / closing device for opening and closing an opening by winding a curtain material such as a shutter or a screen that covers the opening of a building is known (see, for example, Patent Document 1). The electric opening / closing device is connected to a commercial power supply and grounded.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When retrofitting an electric opening / closing device during renovation, changing from manual to electric, or changing an old electric opening / closing device to a new one, it may be necessary to connect a power line and install an earth wire.

Means for Solving the Problems

[0005] The present disclosure relates to a winding drive device for an electric opening / closing device, comprising a metal case for housing a motor and a substrate disposed within the case, wherein a charging portion on the substrate is disposed away from the case, and the substrate is covered with an insulating sheet.

Brief Description of the Drawings

[0006]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Mode for Carrying Out the Invention

[0007] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. The electric opening / closing body device 100 is, for example, an electric shutter. The electric opening / closing body device 100 is arranged at the opening 200 of a building where a window or the like is provided. The electric opening / closing body device 100 includes a frame portion 110, a shutter box 120, a slat curtain 130, a winding shaft portion 140, and a winding drive device 1.

[0008] The frame portion 110 is arranged along the periphery of the opening 200 and fixed to the outer wall surface of the building. The shutter box 120 is arranged above the frame portion 110 along the width direction. The interior of the shutter box 120 is formed to be hollow. The slat curtain 130 is a planar material that can be opened and closed outside the opening 200. The slat curtain 130 is configured to be wound into a roll and close the opening 200 by hanging down. The slat curtain 130 is housed inside the shutter box 120 when wound.

[0009] The winding shaft portion 140 is an elongated cylinder with a hollow interior that extends from one end to the other end of the shutter box 120. The end of the slat curtain 130 is fixed to the outside of the winding shaft portion 140. When the winding shaft portion 140 rotates, the slat curtain 130 is wound up or hung down from the winding shaft portion 140. On one side of the inner end of the winding shaft portion 140, the winding drive device 1 described later is arranged. On the other side of the inside of the winding shaft portion 140, a spring set 141 is arranged.

[0010] The take-up driving device 1 is a device that is fixed to the take-up shaft portion 140 and rotates the take-up shaft portion 140. As shown in FIGS. 2 and 3, the take-up driving device 1 includes a case 2, a motor 3, a substrate 4, an insulating sheet 5, and fixing means 6.

[0011] The case 2 is a substantially cylindrical member that forms the outer shape of the take-up driving device 1. The case 2 includes an upper case 21 and a lower case 22. The upper case 21 and the lower case 22 are each a horizontally long member having a substantially semi-circular cross-section and extending along the axial direction of the take-up shaft portion 140. The upper case 21 and the lower case 22 are connected to each other to form a cylindrical shape. The case 2 has sufficient strength to rotate the take-up shaft portion 140 to which the slat curtain 130 is connected and is made of metal.

[0012] The motor 3 rotates by electric power and drives the take-up driving device 1. The motor 3 is housed inside the lower case 22. The motor 3 is connected to a gear 31 and is disposed on one end side of the case 2.

[0013] The substrate 4 is a control substrate that controls the take-up driving device 1 to open and close the slat curtain 130 in response to an instruction from a remote controller (not shown). The substrate 4 is disposed inside the lower case 22. The substrate 4 is supported by a support member 61 of the fixing means 6 described later and is covered with an insulating sheet 5. A harness 43 connected to various devices is connected to the substrate 4. The substrate 4 includes a substrate main body portion 41 and a charging portion 42.

[0014] The substrate main body portion 41 is a thin insulating plate and is a non-charging portion made of synthetic resin. The substrate main body portion 41 has a substantially rectangular shape, and the longitudinal direction is arranged along the longitudinal direction of the case 2. The substrate main body portion 41 forms the outer shape of the substrate 4.

[0015] The charging part 42 is a conductive part that is charged during normal use, and includes conductor wirings arranged on the substrate main body part 41 and metal parts to which electronic components are soldered. As shown in FIG. 3, the charging part 42 has a leg part 421 that protrudes downward from the lower surface of the substrate main body part 41. The leg part 421 is a part of the soldered metal part. As shown in FIG. 3, the charging part 42 is arranged at a predetermined distance D from the case 2. More specifically, the lower end of the leg part 421 in the charging part 42 is arranged at least 2.5 mm away from the lower case 22. By having the charging part 42 be 2.5 mm or more away from the lower case 22, the metal case 2 and the charging part 42 are insulated from each other.

[0016] The insulating sheet 5 is made of a non-conductive material and is a flexible thin plate material. The insulating sheet 5 is formed in a cylindrical shape having an outer diameter that can be inserted into the case 2. The insulating sheet 5 covers the substrate 4 by having the substrate 4 arranged inside its cylindrical shape, and also covers the harness 43 and transformer 7 arranged on the substrate 4, as well as the motor 3 arranged adjacent to the substrate 4. The insulating sheet 5 also covers the support member 61 of the fixing means 6 described later together with the substrate 4. In other words, the substrate 4, the motor 3, the support member 61, etc. are arranged inside the cylinder formed by the insulating sheet 5. Since the insulating sheet 5 covers the substrate 4, the substrate 4 and the case 2 are additionally insulated from each other. As shown in FIG. 2, an opening 51 that is partially cut out is formed in the insulating sheet 5. The insulating sheet 5 may be made of, for example, polypropylene or polycarbonate.

[0017] The fixing means 6 is a member that fixes the case 2 and the substrate 4. The fixing means 6 is made of an insulating material and has a support member 61 and a screw 62.

[0018] As shown in FIG. 2, the support member 61 is composed of a vertically long thin plate along the longitudinal direction of the substrate 4. The support member 61 has a support member main body part 611, a case contact part 612, and a support convex part 613. The support member 61 is made of resin, specifically plastic.

[0019] The support member main body 611 has a substantially rectangular shape in plan view and is disposed below the substrate main body 41. A part of the support member main body 611 is notched so as not to interfere with the leg portion 421 of the charging portion 42 protruding from the lower surface of the substrate main body 41.

[0020] As shown in FIG. 4, the case contact portion 612 is disposed at both longitudinal ends and substantially the central portion in the longitudinal direction of the support member main body 611 on the back surface of the support member main body 611 on the side opposite to the side where the substrate 4 is disposed. The case contact portion 612 is an arc-shaped portion having a curved lower surface so as to follow the semi-circular curved portion of the lower case 22. The width of the case contact portion 612 is wider than the width of the support member main body 611 and protrudes from both ends in the width direction of the support member main body 611.

[0021] The support convex portion 613 is a protrusion protruding upward from the end of the case contact portion 612. The support convex portion 613 supports the lower side of the substrate main body 41. The support convex portion 613 is connected to and fixed to the substrate main body 41. By the support convex portion 613 supporting the substrate main body 41, a gap G is formed between the substrate main body 41 and the support member main body 611. The leg portion 421 of the charging portion 42 protrudes from the substrate main body 41 and is disposed in this gap G. Thereby, the leg portion 421 of the charging portion 42 and the support member main body 611 are not in direct contact. When the length of the leg portion 421 protruding from the charging portion 42 varies depending on the location, the substrate main body 41 does not tilt, and the distance between the substrate main body 41 and the support member 61 is kept constant.

[0022] The screw 62 is a resin screw for fixing the case 2 and the support member 61. The screw 62 passes through and fixes the case 2, the insulating sheet 5, and the support member 61. Since the support member 61 is connected and fixed to the substrate 4, when the case 2 and the support member 61 are connected and fixed by the screw 62, the substrate 4 and the case 2 are connected and fixed via the insulating sheet 5.

[0023] According to the first embodiment, the following effects are achieved. The winding drive device 1 of the electric opening and closing body device 100 includes a metal case 2 that houses a motor 3 and a substrate 4 disposed within the case 2. The charging portion 42 on the substrate 4 is disposed at a predetermined distance D from the case 2, and the substrate 4 is configured to be covered with an insulating sheet 5. Since the charging portion 42 is disposed at a predetermined distance D from the case 2 and the substrate 4 is covered with the insulating sheet 5, the substrate 4 is doubly insulated from the case 2. As a result, the winding drive device 1 has a double insulation structure. Thereby, it becomes unnecessary to install an earthing wire as defined by the Electrical Appliances and Materials Safety Act for the winding drive device 1. Therefore, the installation of the winding drive device 1 becomes easier. In particular, the workability is improved when installing the electric opening and closing body device retrospectively, such as during renovation.

[0024] According to the first embodiment, the case 2 and the substrate 4 disposed at a predetermined distance from each other are connected by insulating fixing means 6 via an insulating sheet 5. Thereby, the metal case 2 and the charging portion 42 of the substrate 4 are more reliably insulated.

[0025] According to the first embodiment, the fixing means 6 is configured to include a resin support member 61 that supports the lower side of the substrate 4, and the support member 61 is connected to the case 2. Since the fixing means 6 has a resin support member 61 that supports the lower side of the substrate 4, the substrate 4 is stably held within the case 2. At the same time, since the support member 61 is positioned between the case 2 and the substrate 4, a more reliable and safe insulation structure can be obtained.

[0026] According to the first embodiment, a gap G is formed between the support member 61 and the substrate 4, and a part of the charging portion 42 is projected from the substrate 4 and disposed in the gap G. Thereby, even if a part of the charging portion 42 extends toward the support member 61 side below the substrate 4, it is not connected to the case 2. Therefore, a more reliable and safe insulation structure can be obtained.

[0027] The present disclosure is not limited to the above-described embodiments, and modifications, improvements, etc. within the scope that can achieve the object of the present disclosure are included in the present disclosure. In the first embodiment, the case 2 and the substrate 4 are connected by fixing a resin support member 61 with a resin screw 62. Since the screw 62 is made of resin, a reliable insulation structure can be obtained. However, the support member 61 may be fixed with a metal screw. According to the metal screw, it can be firmly fastened and the durability is improved.

[0028] In the second embodiment shown in FIG. 5, the insulating fixing means in the winding drive device 1A has a resin screw 62A as an insulating fixture. The resin screw 62A directly fixes the case 2 and the substrate 4 covered with the insulating sheet 5 without passing through the support member 61.

[0029] The substrate main body portion 41 of the substrate 4 has a through hole 44 for fixing the screw 62A. The through hole 44 is arranged diagonally near the corner of the substrate main body portion 41. The lower case 22 has a mounting portion 221 in which a through hole 221a for fixing the screw 62A is formed. The mounting portion 221 is constituted by a protrusion protruding upward from the lower surface of the lower case 22 at a position corresponding to the through hole 44 of the substrate main body portion 41 in the lower case 22, and the upper surface is formed flat. The through hole 221a of the mounting portion 221 is formed on the flat upper surface of the mounting portion 221.

[0030] The screw 62A is inserted through the through hole 44 of the substrate main body portion 41 and the through hole 221a in the mounting portion 221 of the lower case 22 to fix the substrate 4 and the lower case 22. The substrate 4 is covered with the insulating sheet 5, and the case 2 and the substrate 4 are arranged at a predetermined distance D apart. Therefore, even without passing through the support member 61, the charging portion 42 of the substrate 4 and the lower case 22 are insulated only by fixing the substrate 4 and the lower case 22 with the screw 62A.

[0031] As an example of the fixture, a resin screw 62A is illustrated, but it is not limited to a screw. As long as the case 2 and the substrate 4 can be fixed, a pin or the like may be used. The fixture may penetrate the support member 61 and fix the case 2 and the substrate 4.

[0032] In the above embodiment, an example in which the winding drive device 1 is provided in the electric opening and closing body device 100 which is an electric shutter has been described. The winding drive device 1 may be provided in a roll screen, and the types of the electric opening and closing body device and the curtain material are not limited.

Explanation of reference numerals

[0033] 1 Winding drive device, 2 Case, 3 Motor, 4 Substrate, 5 Insulating sheet (sheet), 6 Fixing means, 42 Charging part, 61 Support member, 62 Screw (fastener), 100 Electric opening and closing body device

Claims

1. A winding drive device for an electric opening and closing body device, comprising: a metal case for housing a motor; a substrate disposed within the case; an insulating sheet disposed within the case and formed in a cylindrical shape. The charging portion on the substrate is disposed away from the case. The substrate is disposed within the sheet and covered by the sheet, the winding drive device.

2. The winding drive device according to claim 1, wherein the case and the substrate are connected by insulating fixing means via the sheet.

3. The fixing means has a resin support member for supporting the lower side of the substrate. The winding drive device according to claim 2, wherein the support member is connected to the case.

4. A gap is formed between the support member and the substrate. The winding drive device according to claim 3, wherein a part of the charging portion protrudes from the substrate and is disposed in the gap.

5. The fixing means has a fixture. The winding drive device according to any one of claims 2 to 4, wherein the substrate and the sheet are fixed by the fixture.

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