Electromagnetic contactor protection device

Abstract

To provide a protective device for an electromagnetic contactor that can easily provide dust prevention measures. [Solution] The electromagnetic contactor protection device disclosed herein is a protection device for an electromagnetic contactor installed inside a control panel, and comprises a first flexible insulating member that covers the front portion of the electromagnetic contactor, and a cylindrical second flexible insulating member that covers the four side portions adjacent to the front portion of the electromagnetic contactor, with a magnet provided at one end of the second flexible insulating member that contacts the installation surface of the electromagnetic contactor on the control panel, and a connecting member that connects the other end of the second flexible insulating member to the end of the first flexible insulating member.

Description

[Technical Field]

[0001] The present disclosure relates to a protection device for an electromagnetic contactor. [Background technology]

[0002] The following Patent Document 1 discloses a technology for an elevator control panel equipped with an electromagnetic control device, in which a storage box for storing the electromagnetic control device is attached to the mounting surface of the elevator control panel, and the entire inner wall of the storage box is covered with a buffer member made of sound-absorbing material to form an electromagnetic control device storage chamber, thereby suppressing the noise and vibration noise generated when the electromagnetic control device opens and closes. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-111583 Summary of the Invention [Problem to be solved by the invention]

[0004] Conventionally, poor contact in electromagnetic contactors has been caused by the intrusion of dust or foreign matter. The installation environment of elevators is one in which dust or foreign matter can easily get in. However, the control panel is highly densely packed and many wires are connected to the electromagnetic contactor, making it difficult to take sufficient measures.

[0005] The present disclosure has been made to solve the above-mentioned problems, and an object of the present disclosure is to provide a protection device for an electromagnetic contactor that can easily provide dust prevention measures. [Means for solving the problem]

[0006] The electromagnetic contactor protection device of the present disclosure is a protection device for an electromagnetic contactor installed inside a control panel, and comprises a first flexible insulating member that covers the front portion of the electromagnetic contactor, and a cylindrical second flexible insulating member that covers the four side portions adjacent to the front portion of the electromagnetic contactor, with a magnet provided at one end of the second flexible insulating member that contacts the installation surface of the electromagnetic contactor on the control panel, and a connecting member that connects the other end of the second flexible insulating member to the end of the first flexible insulating member. [Effects of the Invention]

[0007] According to the present disclosure, it is possible to provide a protection device for an electromagnetic contactor that can easily provide dust prevention measures. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a plan view showing a protection device for an electromagnetic contactor according to a first embodiment. [Figure 2] 1 is a side view showing a protection device for an electromagnetic contactor according to a first embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments will be described with reference to the drawings. Common or corresponding elements in the various drawings will be denoted by the same reference numerals, and descriptions thereof will be simplified or omitted.

[0010] Embodiment 1 FIG. 1 is a plan view showing an electromagnetic contactor protection device 1 according to the first embodiment. FIG. 2 is a side view showing the electromagnetic contactor protection device 1 according to the first embodiment. The electromagnetic contactor protection device 1 shown in these figures is a protection device 1 for an electromagnetic contactor 3 installed inside a control panel. The electromagnetic contactor 3 is mounted via a DIN rail 4 inside a housing 2 of an elevator control device. The electromagnetic contactor 3 turns on and off the power supplied to the electric motor in response to commands from the elevator control unit. The electromagnetic contactor 3 may be an electromagnetic switch or an electromagnetic relay. The electromagnetic contactor 3 may also be mounted via a mounting plate instead of the DIN rail 4.

[0011] The electromagnetic contactor 3 has a wiring terminal portion. A plurality of wires 8 are connected to the electromagnetic contactor 3. The protection device 1 has a first flexible insulating member 7 that covers the front portion of the electromagnetic contactor 3. The first flexible insulating member 7 is made of an insulating sheet. The first flexible insulating member 7 may have a hat shape.

[0012] The protection device 1 has a cylindrical second flexible insulating member 6 that covers the front surface and the four adjacent side surfaces of the electromagnetic contactor 3. The second flexible insulating member 6 is made of an insulating sheet.

[0013] A plurality of magnets 5 are provided on one end of the second flexible insulating member 6, which comes into contact with the installation surface of the control panel on which the electromagnetic contactor 3 is installed. The magnets 5 fix one end of the second flexible insulating member 6 to the housing 2, which is the installation surface of the electromagnetic contactor 3.

[0014] A plurality of magnets 5 are provided at the other end of the second flexible insulating member 6 and the end of the first flexible insulating member 7 as connecting members that connect the two.

[0015] The second flexible insulating member 6 is installed to surround the periphery of the electromagnetic contactor 3. By enclosing the electromagnetic contactor 3 with the second flexible insulating member 6 and the first flexible insulating member 7, it is possible to prevent dust or foreign matter from entering the electromagnetic contactor 3, thereby improving the contact reliability of the electromagnetic contactor 3. Although many wires 8 are connected to the electromagnetic contactor 3, the use of a flexible insulating sheet allows for a tight seal around the wires 8. Even in a control device with a high component density, the second flexible insulating member 6 can be installed by filling in the gaps between components. By fixing the second flexible insulating member 6 to the housing 2 using the magnets 5, it can be fixed even in locations with complex irregularities, reducing mounting constraints. Retrofitting at the installation site is also possible. Access to the electromagnetic contactor 3 can be achieved by removing only the first flexible insulating member 7, ensuring easy installation. When connecting wiring to the electromagnetic contactor 3, care must be taken to prevent the wiring fixing screws from falling off, but because the second flexible insulating member 6 surrounds the electromagnetic contactor 3, the risk of the wiring fixing screws falling off can be reduced.

[0016] The connecting member connecting the other end of the second flexible insulating member 6 and the end of the first flexible insulating member 7 is not limited to the magnet 5, but may be a zipper structure, a zipper structure such as a plastic bag, or a hook-and-loop fastener. This allows for an inexpensive configuration.

[0017] The housing 2 of the control device is densely packed with components, and the electromagnetic contactor 3 is connected to numerous wires, making it difficult to prevent dust and foreign matter from entering the electromagnetic contactor 3. However, by using an insulating sheet, it can be mounted even in narrow gaps with limited space, and the wiring can be sealed without any gaps. Furthermore, there is no risk of damaging the wires with the edge of the sheet metal, as is the case with sheet metal structures. It can also be mounted when it is necessary to ensure insulation distance and arc space with other equipment. By using a magnet 5 to secure the housing 2, it can be fixed even in places with complex unevenness, reducing mounting restrictions. By separating the second flexible insulating member 6 and the first flexible insulating member 7, only the first flexible insulating member 7 can be removed to access the electromagnetic contactor 3 during maintenance, which does not hinder workability. This structure also allows for easy retrofitting.

[0018] A sound absorbing material may be used for at least a part of the first flexible insulating member 7 and the second flexible insulating member 6. This makes it possible to suppress noise from the electromagnetic contactor 3.

[0019] An air filter may be used for at least a part of the first flexible insulating member 7 and the second flexible insulating member 6. By using a breathable air filter, it is possible to suppress heat generation from the electromagnetic contactor 3 while maintaining the effect of protecting against dust or foreign matter.

[0020] An insect repellent sheet with an insecticidal component kneaded into it may be used for at least a portion of the first flexible insulating member 7 and the second flexible insulating member 6. This can reduce the intrusion of insects into the electromagnetic contactor 3 and improve the contact reliability of the contacts.

[0021] 2, a reinforcing member 9 may be attached to the flexible second flexible insulating member 6. This makes it possible to support the position of the second flexible insulating member 6 while maintaining its flexibility, and makes it easier to attach and detach the first flexible insulating member 7.

[0022] Various aspects of the present disclosure are summarized below as appendices.

[0023] (Appendix 1) A protection device for an electromagnetic contactor installed inside a control panel, a first flexible insulating member covering a front portion of the electromagnetic contactor; a cylindrical second flexible insulating member that covers the front surface and four adjacent side surfaces of the electromagnetic contactor; Equipped with a magnet is provided at one end of the second flexible insulating member that comes into contact with an installation surface of the control panel on which the electromagnetic contactor is installed; A protection device for an electromagnetic contactor, comprising a connecting member that connects the other end of the second flexible insulating member and the end of the first flexible insulating member. (Appendix 2) 2. The protection device for an electromagnetic contactor according to claim 1, wherein a sound-absorbing material is used for at least a part of the flexible insulating member. (Appendix 3) 3. The protection device for an electromagnetic contactor according to claim 1 or 2, wherein an air filter is used for at least a part of the flexible insulating member. (Appendix 4) 4. The protection device for an electromagnetic contactor according to claim 1, wherein a magnet is used as the connecting member. (Appendix 5) 5. The protection device for an electromagnetic contactor according to any one of claims 1 to 4, wherein the connecting member has a zipper structure, a fastener structure, or a hook-and-loop fastener. (Appendix 6) 6. The protection device for an electromagnetic contactor according to any one of claims 1 to 5, wherein an insect repellent sheet having an insecticidal component kneaded into at least a part of the flexible insulating member is used. (Appendix 7) 7. The protection device for an electromagnetic contactor according to any one of claims 1 to 6, further comprising a reinforcing member attached to the second flexible insulating member. [Explanation of symbols]

[0024] REFERENCE SIGNS LIST 1 Electromagnetic contactor protection device, 2 Housing, 3 Electromagnetic contactor, 4 DIN rail, 5 Magnet, 6 Second flexible insulating member, 7 First flexible insulating member, 8 Wiring, 9 Reinforcement member

Claims

1. A protection device for an electromagnetic contactor installed inside a control panel, a first flexible insulating member covering a front portion of the electromagnetic contactor; a cylindrical second flexible insulating member covering the front surface and four adjacent side surfaces of the electromagnetic contactor; Equipped with a magnet is provided at one end of the second flexible insulating member that comes into contact with an installation surface of the control panel on which the electromagnetic contactor is installed; A protection device for an electromagnetic contactor, comprising a connecting member that connects the other end of the second flexible insulating member and the end of the first flexible insulating member.

2. 2. The protection device for an electromagnetic contactor according to claim 1, wherein a sound absorbing material is used for at least a part of the flexible insulating member.

3. 3. The protection device for an electromagnetic contactor according to claim 1, wherein an air filter is used for at least a part of the flexible insulating member.

4. 3. The protection device for an electromagnetic contactor according to claim 1, wherein a magnet is used as the connecting member.

5. 3. The protection device for an electromagnetic contactor according to claim 1, wherein the connecting member has a zipper structure, a fastener structure, or a hook-and-loop fastener.

6. 3. The protection device for an electromagnetic contactor according to claim 1, wherein an insect repellent sheet having an insecticidal component kneaded into at least a part of the flexible insulating member is used.

7. 3. The protection device for an electromagnetic contactor according to claim 1, further comprising a reinforcing member attached to the second flexible insulating member.

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