JP2008029119A - Protection cover for electrical apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cover covering a row of operating parts disposed on an electrical apparatus and exposing only the covered operating parts as required. <P>SOLUTION: The cover 1 for electrical apparatus includes insulating sheets 2, 3, and an insulating slide fastener attached to the insulating sheets 2, 3 and disposed in front of the row of the operating parts of the electrical apparatus. The slide fastener includes: rows of elements 20, 21 arrayed in the direction of the row of the operating parts; and two sliders 60, 61 that are displaced on the rows of elements 20, 21 from both their ends toward their center, to engage the elements with each other. When at least one of the two sliders 60, 61 is displaced on the elements 20, 21 to bring the elements close to each other, an opening O1 is formed by the disengaged elements between the two sliders 60, 61 so as to operate at least one operating part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention provides a protective cover for electric equipment that can cover at least a row of operation parts that are operated by an operator in the process of using the equipment arranged on or in the housing of various electric (electronic) equipment. About.

  In order to ensure dustproofness and insulation in various electric devices, a cover made of a covering sheet that covers all or part of the electric device is used. For example, Japanese Patent Application Laid-Open No. 7-143621 (Patent Document 1) proposes a protective cover 91 disposed on the front side of an instrument 89 built in the switchboard 90 shown in FIG. The cover 91 is made of a flexible insulating thin plate member, and the upper end portion of the cover 91 is fixed to the mounting frame 94 by a pressing plate 96, and the lower end portion thereof is detachable from the mounting frame 95 by hook-and-loop fasteners 93A and 93B. It is designed to be locked. The thin plate-like member constituting the cover 91 is divided into a plurality of portions by vertical cuts except for the upper end portion thereof.

JP-A-7-143621

  By the way, during the operation process of electrical equipment, maintenance and inspection, etc., the switches and adjustment knobs provided on the equipment are operated, the connection terminals of the terminal block are wired, and the current and voltage between the terminals are measured. Work is necessary. And the more functional electrical equipment, the more equipped the operation parts such as switches, adjustment knobs, terminals, etc. (in the present invention, in the process of using electrical equipment such as operation and maintenance of electrical equipment, For example, switches, adjustment knobs, connection terminals on the terminal block, switch on / off operation, volume adjustment of adjustment knobs, wiring work, current and voltage measurement, component operation check, etc. The number of electrodes, power terminals, test terminals, connectors, etc. attached to various electrical (electronic) parts is collectively referred to as “operation parts”). Located on or inside the body. And when arrange | positioning the cover currently disclosed by patent document 1 in the front of the row | line | column of such an operation component, after removing the lower end part of the division | segmentation part corresponding to the protective cover 91 from the attachment frame 95, and raising it up Although the necessary work will be performed, the entire row of operation parts (instrument 89) covered by the raised divided portion will be exposed at the same time. For example, a switch other than the target switch is erroneously set. There is a risk of turning it on or accidentally touching a terminal other than the target terminal, leading to a failure of the electrical device or an electric shock.

  Such a risk is avoided by cutting a part of the protective cover made of an insulating sheet to form an opening so that only the operation parts necessary for work are exposed from the opening. sell. However, since the opening portion formed in the protective cover is always in an open state thereafter, the protective cover after use can no longer be used as a cover for covering the entire area to be covered by the electrical equipment, It must be disposed of, which is extremely disadvantageous economically.

  Therefore, in consideration of the above circumstances, the present invention can cover at least a row of operation parts arranged in various electric devices, and can expose only an operation part corresponding to a part covered as necessary. It is an object of the present invention to provide a protective cover for electrical equipment that can be used repeatedly.

  The above-described problem is a protective cover for an electrical device that covers at least a row of operation parts that are operated by an operator in the process of using the device disposed on or inside the housing of the electrical device, and has an insulating property. A cover sheet, and an insulating slide fastener attached to the cover sheet and disposed at a position in front of the row of operation parts. The slide fastener extends along the row of operation parts. And two sliders for meshing the service teeth by displacing the service teeth from both ends toward the center thereof, and at least one of the two sliders is used as a service tooth. When the two sliders are moved closer to each other by displacing the teeth, at least one of the operation parts is operated by the non-engaged service teeth between the two sliders. Opening size is achieved by in that the protective cover for an electrical device designed to be formed which can be.

  In the present invention, the “insulating” covering sheet and the slide fastener include not only the entire body made of an insulating material but also a surface covered only with an insulating material. Further, the number of operation components included in the row of operation components protected by the protective cover of the present invention is not limited as long as it is plural, and a plurality of types of operation components may be included in one row. Furthermore, the direction of the operation component row is not limited, and the operation components may be arranged in a straight line, or may be arranged in a curved line. Further, the protective cover of the present invention may cover the surface of the casing of the electric device. For example, as shown in FIG. 18, the protective cover of the present invention is used to cover a row of operation parts arranged inside. Can also be used. Further, the protective cover of the present invention can be used to cover only the vicinity of the row of operation parts.

  According to the present invention, the two sliders of the insulating slide fastener arranged on the front surface of the row of operation parts to be operated by the worker in the process of using the electrical equipment are not engaged by changing the positions of the two sliders. The position and size of the opening formed by the tooth can be arbitrarily changed, and the opening is formed at the position of the operation component to be actually operated in the row of operation components, and the operation of the object Since the operation parts other than the parts can be reliably covered with the engaged teeth, it is possible to prevent an erroneous operation on the other operation parts. Further, when the opening position is changed as necessary, the opening portion before the change is covered with the engagement teeth engaged with the slide fastener, so that the protective cover can be used repeatedly without being discarded.

  In the present invention, a single cover sheet is used, and a slit portion extending along the row of the operation parts is formed at a position where the cover sheet is disposed in front of the row of the operation parts. Although the slide fastener as described above can be attached, at least two cover sheets arranged with the edges extending along the row of the operation parts facing each other may be used. In this embodiment, the service dentition of the slide fastener is provided on the opposite edge of the covering sheet disposed adjacent to each other, and the two sliders of the slide fastener are arranged on the service dentition of one cover sheet. 2 or 1 on each of the dentitions of the covering sheet, and each slider is positioned at the end of the dentition, and at this end position, it is provided on one of the dentitions. After fitting each slider to the service tooth at the end of the other service tooth row, the two sliders are moved closer together by displacing at least one of the two sliders on the service tooth row. When the adjacent cover sheet is connected, at least one opening having a size capable of operating at least one of the operation parts by the non-engaging engagement teeth between the two sliders And it is formed.

  According to the form using at least two covering sheets, by preparing in advance various kinds of covering sheets provided with a tooth arrangement and a slider at the edge, and appropriately combining the prepared covering sheets The protective cover adapted to the row of operation parts of the electric equipment to be used can be formed quickly and easily. In this case, if the length of the dentition provided on the opposite edge is the same, an opening over both dentitions is formed, and the dentition provided on the opposite edge is formed. If the lengths of the dental dentitions are different, an opening that is biased toward the longer dentition is formed.

  In the protective cover for electric equipment of the present invention, it is preferable that the covering sheet and the slide fastener are made of a transparent material such as polypropylene. When it is made of a transparent material, the operating parts to be operated can be seen when changing the fixed position of the slider on the dentition row, and therefore the position and size of the opening formed by the dents that are not engaged. This is preferable because the position and size of the opening after the change can be easily determined. Also, the shape of the slider is not particularly limited as long as it is possible to mesh the service teeth by displacing the service teeth from the end toward the center, but the meshing from the state where the service teeth are engaged is engaged. The slider is provided with a guide member, for example, a guide roller, for changing the extending direction of the dentition to a substantially right angle when shifting to a non-engaged state or when shifting from an unengaged state to an engaged state. In this case, it is preferable because the direction in which the dentition extends is smoothly changed, and the opening position can be easily changed.

  The protective cover for electric equipment of the present invention may further include a shape-retaining member that defines the shape of the opening formed by the non-engaging engagement teeth that are disposed between the two sliders that are close to each other. Since the shape of the opening is maintained in a predetermined shape by the shape-retaining member, the operator can easily perform operations on the operation components in the opening. Further, the opening position can be changed while maintaining the shape of the opening. At this time, it is preferable that the slider is provided with a locking portion for connecting the shape retaining member. By connecting the shape-retaining member to the respective locking portions of the two sliders, the worker simply performs the operation of moving one of the sliders on the dentition row so that the shape-retaining member and the other slider can be moved. Since it follows and moves on the dentition, the position of the opening can be easily changed.

  The shape retaining member is preferably made of an elastic material such as hard rubber. It is preferable to use an elastic member because an installation operation can be easily performed when the shape-retaining member is installed in an opening formed by non-engaging engagement teeth.

  The shape of the shape-retaining member is not particularly limited as long as the shape of the opening can be maintained in a predetermined shape. For example, an annular member having a groove portion for fitting a non-engaged dental dentition, for example, a full circle shape Alternatively, a substantially rectangular annular member or a semi-annular member provided with a groove portion for fitting a non-engaged dental dentition, for example, a semicircular or substantially U-shaped semi-annular member may be used as the shape retaining member. it can. In this configuration, the shape of the opening is defined by fitting a non-engaged engagement tooth row into the groove portion of the shape retaining member, and when changing the opening position, the engagement tooth row not engaged with the shape retention member is placed on the inner surface of the groove portion. Since the movement follows the slider while making contact, the opening position can be easily moved while maintaining the opening shape.

  In addition, an annular member having a leg portion inserted into an opening formed by a non-engaged engagement tooth row, for example, an annular member having a full circle or a substantially rectangular shape, or an unengaged engagement tooth row. A semi-annular member provided with a leg portion penetrating through the opening, for example, a semi-circular or substantially U-shaped semi-annular member may be used as the shape retaining member. In this form, the shape of the opening is defined by inserting the leg into the opening formed by the non-engaged dentition, and when the opening position is changed, the dentition that the shape retaining member does not mate with is defined by the leg. Therefore, the opening position can be easily moved while maintaining the opening shape. In this embodiment, when a rotatable roller is attached to the contact portion of the leg portion with the dentition, the non-engageable dentition passes while sliding on the roller. It becomes easy.

  The annular or semi-annular shape retaining member is formed by connecting a plurality of rod-shaped members, and adjacent rod-shaped members slide on the peripheral surface of the other rod-shaped member provided on one rod-shaped member. If the size of the opening formed by the engagement teeth that are not meshed with each other is adjusted via the connecting part that engages freely, it can be adjusted according to the size of the operation component to be operated. This is preferable because it can be adjusted to the size of the opening suitable for operating the part.

  The protective cover for electrical equipment according to the present invention may further include a covering sheet that covers an area other than the front surface of the row of operation parts. In this case, adjacent covering sheets are connected to each other by the slide fastener mechanism as described above. can do. With this configuration, for example, a protective cover that covers the entire housing of the electric device can be formed.

  According to the present invention, at least one of the two sliders in the slide fastener is displaced on the dentition row so that the two sliders approach each other, so that an operator can Only the operation parts that require the operation according to the above, for example, only the switch that requires the on / off operation, and only the terminals that need to perform the wiring work can be exposed, and an erroneous operation can be avoided. Further, by using the shape retaining member that maintains the shape of the opening, it is possible to smoothly operate the operation component.

  Hereinafter, a protective cover for an electric device according to an embodiment of the present invention will be described with reference to the drawings.

(First embodiment)
The first embodiment corresponds to a protective cover formed by combining a plurality of covering sheets, which is used to cover a row of operation components arranged on a housing of an electric device.

  FIG. 1 shows a protective cover according to the present embodiment used for an electric apparatus having a row of switches as operation parts on the front surface of a housing. FIG. 1A is a schematic perspective view of an electric device equipped with the protective cover of the present embodiment, and FIG. 1B schematically shows only the protective cover of the present embodiment.

  The electric device 80 is provided with a meter 81 and a row of switches 82, 83, 84, 85 as operation parts on the front surface of the housing, and the upper side and the lower side of the protective cover 1 according to the present embodiment are electrically connected. It is attached to the upper side and the lower side of the front surface of the housing of the electric device 80 by holding plates 80 a and 80 b attached to the device 80.

  The protective cover 1 of the present embodiment has a rectangular shape formed of five insulating and transparent resins arranged with the edges extending along the switch rows 82, 83, 84, 85 facing each other. Coating sheets 2, 3, 4, 5, and 6 are included. Then, tape halves of insulating and transparent resin open fasteners are attached to the edges of these covering sheets 2, 3, 4, 5, and 6 adjacent to each other.

  In FIG. 2, the adjacent area | region of the 1st coating sheet 2 from the top and the 2nd coating sheet 3 from the top is expanded and shown. FIG. 2A shows the cover sheets 2 and 3 in a separated state, and FIG. 2B shows the cover sheets 2 and 3 connected by a slide fastener mechanism. . As shown in FIG. 2 (A), tape halves 10 and 11 having dentitions 20 and 21 having equal lengths are attached to opposite edges of covering sheet 2 and covering sheet 3, respectively. . Boxes 40 and 41 are provided at one end of each service tooth row 20 and 21, and butterfly pins 50 and 51 are provided at the other end, respectively. One slider 60, 61 is engaged with each other. The sliders 60 and 61 are provided with pullers 60a and 61a for moving the sliders 60 and 61 on the outer surface side of the covering sheets 2 and 3, respectively. On the surface side), locking portions 60b and 61b (see FIG. 4) for connecting a shape retaining member 70 described later are provided.

  The sliders 60 and 61 are positioned adjacent to the boxes 40 and 41 at the end portions of the dental dentitions 20 and 21, and at this end portion position, the slider 50 on the covering sheet 2 side is attached with the butterfly pin 50 on the covering sheet 3 side. After engaging the tip of the butterfly pin 50 into the box 40, the handle 60 a of the slider 60 is held and the slider 60 is moved in the direction of the slider 61 on the dentitions 20 and 21. Alternatively, the slider 61 on the cover sheet 3 side is engaged with the butterfly stick 51 on the cover sheet 2 side, the tip of the butterfly stick 51 is fitted into the box 41, and then the slider 61 is gripped by the puller 61 a of the slider 61. Is moved in the direction of the slider 60, the engaging teeth 20a, 21a of the opposing engaging teeth rows 20, 21 are engaged, and the two covering sheets 2, 3 are connected. Then, as shown in FIG. 2B, when at least one of the two sliders 60, 61 is moved on the dentitions 20, 21, and the two sliders 60, 61 are brought close to an appropriate distance. An opening O1 is formed by the engagement teeth 20a and 21a that are not engaged with each other between the two sliders 60 and 61.

  In FIG. 3, the adjacent area | region of the 2nd coating sheet 3 from the top and the 3rd coating sheet 4 from the top is expanded and shown. FIG. 3A shows the cover sheets 3 and 4 in a separated state, and FIG. 3B shows the cover sheets 3 and 4 connected by a slide fastener mechanism. . As shown in FIG. 3 (A), tape halves 12 and 13 having dentitions 22 and 23 having different lengths are attached to opposite edges of the covering sheet 3 and the covering sheet 4, respectively. . Boxes 42 and 43 are provided at both ends of the shorter dentition 22 and butterflies 52 and 53 are provided at both ends of the longer dentition 23, respectively. Two sliders 62 and 63 are engaged on the tooth row 22. The sliders 62 and 63 are provided with pullers 62a and 63a for moving the sliders 62 and 63 on the outer surface side of the covering sheets 3 and 4, respectively. On the surface side), locking portions 62b and 63b (see FIG. 6) for connecting a shape retaining member 71 described later are provided.

  The sliders 62 and 63 on the covering sheet 3 side are positioned adjacent to the boxes 42 and 43 at both ends of the dental dentition 22, and the butterfly bar 52 on the covering sheet 4 side is engaged with the slider 62 at this end position. Then, the tip of the butterfly pin 52 is fitted into the box 42, and the slider 62 is displaced in the direction of the slider 63 using the pull 62a, or the slider 63 is covered with the covering sheet. After engaging the four-side butterfly pin 53, the tip of the butterfly pin 53 is fitted into the box 43, and the slider 63 is displaced in the direction of the slider 62 using the puller 63a. As a result, the engaging teeth 22a and 23a of the opposing engaging tooth rows 22 and 23 are engaged, and the two covering sheets 3 and 4 are connected. Then, as shown in FIG. 3B, the butterfly pins 52 and 53 are engaged with both of the two sliders 62 and 63, and at least one of the two sliders 62 and 63 is placed on the dentitions 22 and 23. When the two sliders 62 and 63 are brought close to each other to an appropriate distance, an opening O2 is formed by the engagement teeth 22a and 23a between the two sliders 62 and 63. The opening O <b> 2 spreads toward the cover sheet 4 having the longer dentition 23.

  The configuration of the slide fastener mechanism including the dentitions 24 and 25 and the sliders 64 and 65 in the adjacent region between the third covering sheet 4 from the top and the fourth covering sheet 5 from the top is the above-described covering sheet. 2 and the covering region 3 are similar to the configuration in the adjacent region, and the dentitions 26 and 27 in the adjacent region between the fourth covering sheet 5 from the top and the fifth covering sheet 6 from the top, The configuration of the slide fastener mechanism including the sliders 66 and 67 is the same as the configuration in the adjacent region between the covering sheet 3 and the covering sheet 4 described above, and a description thereof is omitted.

  Prior to the on / off operation of a switch as an operation component in the electric device 80 to which the protective cover 1 of the present embodiment is attached, the shape is maintained between two sliders between the covering sheets arranged adjacent to each other. A member is attached.

  FIG. 4 shows the shape-retaining member 70 disposed in the opening O1 between the sliders 60 and 61 between the first covering sheet 2 from the top and the second covering sheet 3 from the top, and its installation method. Between the sliders 60 and 61, a shape-retaining member 70 formed of an insulating resin for maintaining the shape of the opening O1 is installed. The shape retaining member 70 includes a pair of horizontal side portions 70a that should be arranged in parallel with the moving direction of the sliders 60 and 61, and a pair of vertical side portions 70b that should be arranged perpendicular to the moving direction of the sliders 60 and 61. The shape-retaining member opening area S1 is a substantially rectangular annular member, and is surrounded by the horizontal side portion 70a and the vertical side portion 70b. The size of the shape retaining member opening area S1 is ON / OFF by exposing the switch 82a constituting the switch row 82. It is large enough to operate. Two leg portions 70c to be inserted into the opening O1 are provided in the vicinity of both end portions of the pair of horizontal side portions 70a, and the leg portions 70c are in a plane including the horizontal side portion 70a and the vertical side portion 70b. On the other hand, the engaging tooth contact portion 70d for bringing the engaging teeth 20a, 21a between the sliders 60, 61 extending vertically into contact with each other, and bending at right angles from the front end of the engaging tooth contact portion 70d and extending outward. The cover sheet 2, 3 has an edge part and a drop-off preventing part 70 e for preventing a roller 70 f described later from dropping from the leg part 70 c. A roller 70f is rotatably attached to the tooth contact portion 70d of each leg portion 70c. The cylindrical roller 70f becomes thicker as it moves to both ends, so that the service teeth 20a and 21a that are not meshed with the central concave portion come into contact with each other and are not easily dropped from the roller 70f.

  When the shape-retaining member 70 is attached to the sliders 60 and 61, the shape-retaining member 70 is brought to the inner surface side (the surface side facing the electrical equipment) of the covering sheets 2 and 3, and the leg portion 70c is placed in the opening O1. After the insertion, the central portion of the vertical side portion 70b is engaged with the engaging portions 60b and 61b of the sliders 60 and 61, respectively, and the non-engaging engagement teeth 20a and 21a are brought into contact with the central concave portion of the roller 70f.

  FIG. 5 shows a method of using the protective cover 1 in which the shape-retaining member 70 is attached to the opening O1 between the sliders 60 and 61 as described above. When the operator wants to turn on / off one of the switches 82a of the switch row 82 of the electrical device 80, the operator holds the puller 60a or 61a of one of the sliders 60 or 61 and holds the service teeth row 20, 21. When the upper part is moved toward the operation target switch 82a, the shape retaining member 70 and the other slider 60 or 61 follow and move. Then, the shape-retaining member 70 moves while contacting the engagement teeth 20a, 21a that are not meshed with the roller 70f of the shape-retaining member 70. Therefore, the shape of the opening O1 can be maintained by the movement of the sliders 60 and 61 on the dentitions 20 and 21, so that the switch 82a to be operated can be exposed from the opening O1. The switch 82a exposed from the opening O1 can be reliably turned on / off without operating the switch by mistake.

  FIG. 6 shows the shape-retaining member 71 disposed in the opening O2 between the sliders 62 and 63 between the second covering sheet 3 from the top and the third covering sheet 4 from the top, and the installation method thereof. Between the sliders 62 and 63, a shape retaining member 71 made of an insulating resin for maintaining the shape of the opening O2 is installed. The shape-retaining member 71 is substantially composed of a horizontal side portion 71a that should be arranged in parallel with the moving direction of the sliders 62 and 63, and a pair of vertical side portions 71b that should be arranged perpendicular to the moving direction of the sliders 62 and 63. The size of the shape retaining member opening area S2 which is a U-shaped semi-annular member and is surrounded by a straight line connecting the end of the horizontal side 71a and the pair of vertical side 71b and the vertical side 71b is a row of switches It is large enough to expose the switch 83a that constitutes 83 to be turned on / off. Two leg portions 71c to be inserted into the opening O2 are provided in the vicinity of both end portions of the lateral side portion 71a. The leg portion 71c includes a tooth contact portion 71d for contacting the engagement teeth 23a between the sliders 62 and 63 extending perpendicularly to the plane including the horizontal side portion 71a and the vertical side portion 71b, and the engagement tooth contact. The edge part of the coating sheet 4 which is bent at right angles from the tip of the part 71d and extends outward, and a drop-off preventing part 71e for preventing a roller 71f described later from dropping off from the leg part 71c. . A roller 71f is rotatably attached to the tooth contact portion 71d of each leg portion 71c. The cylindrical roller 71f becomes thicker as it moves to both ends, so that the service teeth 23a that are not meshed with the central recess come into contact with the roller 71f so that it does not easily fall off the roller 71f.

  When the shape-retaining member 71 is attached to the sliders 62 and 63, the shape-retaining member 71 is brought to the inner surface side (the surface side facing the electrical equipment) of the covering sheets 3 and 4, and the lateral side portion 71a is the covering sheet 4 After the leg portion 71c is inserted into the opening O2, the ends of the pair of vertical side portions 71b are engaged with the locking portions 62b and 63b of the sliders 62 and 63, respectively, and are not engaged with each other. The service tooth 23a is brought into contact with the central recess of the roller 71f.

  FIG. 7 shows a method of using the protective cover 1 in which the shape-retaining member 71 is attached to the opening O2 between the sliders 62 and 63 as described above. When the operator wants to turn on / off one of the switches 83a of the switch row 83 of the electric device 80, the operator holds the puller 62a or 63a of one slider 62 or 63 and holds the dentition row 22, 23. When the upper part is moved toward the operation target switch 83a, the shape retaining member 71 and the other slider 62 or 63 follow and move. Then, the shape retaining member 71 moves while bringing the engagement teeth 23a not engaged with the roller 71f of the shape retaining member 71 into contact. Therefore, the shape of the opening O2 can be maintained by the movement of the sliders 62 and 63 on the dentitions 22 and 23, and the switch 83a to be operated can be exposed from the opening O2. The switch 83a exposed from the opening O2 can be reliably turned on / off without operating the switch by mistake.

  The shape-retaining member between the third covering sheet 4 from the top and the fourth covering sheet 5 from the top, and the method for attaching and using the shape-retaining member are described above. The shape retaining member between the fourth covering sheet 5 from the top and the fifth covering sheet 6 from the top, the mounting method and the using method thereof are the same as those described above. This is the same as the shape-retaining member between the sheet 3 and the covering sheet 4, its mounting method, and usage method, and description thereof is omitted.

  According to the protective cover 1 of the present embodiment, an operator exposes only the switch to be operated from the opening so that the switch to be operated can be reliably operated without erroneously turning on / off other switches. can do.

(Second Embodiment)
The second embodiment corresponds to a protective cover used for covering a row of connection terminals in a terminal block arranged on a housing of an electric device.

  FIG. 8 is a schematic perspective view of an electrical apparatus having a terminal block having a protective cover according to the present embodiment and a row of connection terminals as an operation component to which the cover is attached on the back surface of the casing. FIG. 8A is a schematic perspective view of an electric device to which a protective cover is attached, and FIG. 8B is a schematic view of a state in which the protective cover is attached. The electric device 80 includes a terminal block 87 having a row 86 of connection terminals as operation parts on the back surface of the casing, and the protective cover 1 made of an insulating material according to the present embodiment includes the electric device 80. It covers the 6 sides.

  FIG. 9 shows a development view of the protective cover 1 of the present embodiment. The covering sheet 7A in the protective cover 1 covers the top and bottom surfaces of the electric device 80, the covering sheet 7B covers the back of the electric device 80, the covering sheet 7C covers the front of the electric device 80, and the covering sheet 7D is the electric device 80. Covering the sides. Further, at each edge of each of the covering sheets 7A to 7D, provided at one end of the dentition 30, the slider 31 that displaces on the dentition 30 that constitutes the slide fastener mechanism, and the dentition 30. , A butterfly rod 33 provided at the other end of the dentition 30, and a stopper 34 for preventing the slider 31 from falling off, and provided at opposite edges of the adjacent covering sheets 7 </ b> A to 7 </ b> D. By engaging the hinged pin 33 to the opposing box 32 and displacing the slider 31, the opposing tooth rows 30 are engaged with each other, and the adjacent covering sheets 7A to 7D are connected to each other. Yes.

  A slit 8 extending along the row 86 of connection terminals of the terminal block 87 is formed in a portion of the covering sheet 7 </ b> B arranged at the position of the terminal block 87 of the electric device 80, and a position near the end of the slit 8. Are provided with holes 9 for attaching the covering sheet 7B to the terminal block 87.

  The slit 8 includes a so-called head-to-head slide fastener 14 made of an insulating and transparent material, that is, tooth sets 28 and 29 that have a length substantially equal to the length of the slit 8 and can mesh with each other. A slide fastener 14 including two sliders 68 and 69 for meshing the service teeth 28a and 29a of the service tooth rows 28 and 29 is attached by displacing the teeth on the tooth arrays 28 and 29 from both ends toward the center. Yes. The sliders 68 and 69 are provided with pullers 68a and 69a for moving the sliders 68 and 69 on the outer surface side of the covering sheet 7B, and the inner surface side of the covering sheet 7B (the surface side facing the electric device). Further, locking portions 68b and 69b (see FIG. 10) for connecting a shape retaining member 72 described later are provided. When at least one of the sliders 68 and 69 is displaced on the dentitions 28 and 29 to engage the servicing teeth 28a and 29a and bring the two sliders 68 and 69 closer to an appropriate distance, the two sliders 68 are obtained. , 69 are not engaged with each other, and the opening O3 is formed by the engagement teeth 28a, 29a.

  A shape-retaining member 72 made of insulating hard rubber for maintaining the shape of the opening O3 is attached to the opening O3. FIG. 10 shows the shape retaining member 72 and its installation method. The shape-retaining member 72 is an all-round member, and the shape-retaining member opening area S3 surrounded by the circle is sized so that the entire connection terminal 86a of the terminal block 87 can be seen from the opening area S3. Is set. The outer periphery of the ring is provided with a groove 72a for fitting the non-engaged engagement teeth 28a and 29a, and the ring has a pair of arms for connection to the locking portions 68b and 69b of the sliders 68 and 69. A portion 72b is provided.

  When the shape-retaining member 72 is attached to the sliders 68 and 69, the shape-retaining member 72 is brought to the inner surface side (the surface side facing the electric device) of the covering sheet 7B, inserted into the opening O3, and then a pair of The arm portions 72 b are engaged with the locking portions 68 b and 69 b of the sliders 68 and 69, respectively, and the non-engaging engagement teeth 28 a and 29 a are inserted into the groove portions 72 a of the shape retaining member 72. Thereafter, the covering sheet 7B is fixed to both ends of the terminal block 87 of the electric device 80 by screws passed through the holes 9 provided in the covering sheet 7B.

  FIG. 11 shows how to use the protective cover 1 in which the shape-retaining member 72 is attached to the opening O3 between the sliders 68 and 69 as described above. When an operator wants to perform a wiring operation on any one of the connection terminals 86a in the connection terminal row 86 of the terminal block 87 of the electric device 80, the operator holds the handle 68a or 69a of one slider 68 or 69. When the teeth 28 and 29 are moved toward the operation target connection terminal 86a, the shape-retaining member 72 and the other slider 68 or 69 follow and move. Then, the shape-retaining member 72 moves while bringing the engagement teeth 28a, 29a that are not engaged with the inner surface of the groove portion 72a of the shape-retaining member 72 into contact. Accordingly, the shape of the opening O3 can be maintained by the movement of the sliders 68 and 69 on the dentitions 28 and 29, and the opening O3 can be arranged right above the connection terminal 86a to be operated. The wiring operation can be reliably performed on the connection terminal 86a that can be visually recognized from the opening O3 without erroneously performing the wiring operation on the connection terminal.

  Although two embodiments have been described above, the present invention is not limited to these embodiments, and can be modified within the scope of the present invention.

  For example, an elongated substantially rectangular shape shown in FIG. 12A, a substantially trapezoidal shape having two parallel edges with different lengths shown in FIG. 12B, or an elliptical shape shown in FIG. By combining the covering sheet 2A, the dentition 20A is disposed on the edge of the covering sheet 2A, the slider 60A is disposed on the dentless array 20A, and the size, shape, and portion (surface) of the electrical device to be covered are covered. Together, these cover sheets 2A can be combined to form a protective cover. Further, the length of the service tooth row of the slide fastener covering the row of operation parts and the direction in which the service tooth row extends can also be changed depending on conditions such as the number of operation parts and the direction in which the operation part row extends.

  Further, the shape of the shape retaining member is not limited to the shape in the above-described embodiment, and may be configured by connecting a plurality of rod-shaped members. For example, like the shape-retaining member 73 shown in FIG. 13, a pair of substantially U-shaped members 73a and 73b and leg portions (not shown) straddling the front and back of the covering sheet 2A provided on the members 73a and 73b, respectively. 2), and both ends of the members 73a and 73b may be closely engaged with each other by an inlay method. The size of the opening O4 can be adjusted by the degree of engagement of the inlay (depth of penetration).

  Further, the shape retaining member 74 shown in FIG. 14 is a slider 74 that is inserted in a close and slidable manner into a substantially 74-shaped member 74a made of an insulating material and a connecting portion 74b at the end of the member 74a. A pair of rod-shaped members 74c to be arranged in parallel to the moving direction, a pair of rod-shaped members 74d to be arranged perpendicular to the moving direction of the slider, and legs that straddle the front and back of the covering sheet 2A provided on the member 74a (see FIG. (Not shown), and the size of the opening O5 can be adjusted in the vertical and horizontal directions by the degree of engagement (depth of penetration) of the rod-like members 74c and 74d with the member 74a. .

  Furthermore, the shape-retaining member 75 shown in FIG. 15 is closely and slidably inserted into the connecting member 75a formed in an arc shape made of an insulating elastic material and the connecting portion 75b at the end of the connecting member 75a. A circular arc member 75c made of an insulating elastic material and a roller 75d provided via legs (not shown) straddling the front and back of the covering sheet 2A provided at both ends of the connecting member 75a. The size of the opening O6 can be adjusted in the circumferential direction by the degree of engagement (depth of penetration) of the arc-shaped member 75c with the connecting member 75a.

  Furthermore, in the present invention, it is not always necessary to use a shape retaining member. FIG. 16 shows a form in which no shape retaining member is installed between the sliders 60A and 61A moving on the dentitions 20A and 21A arranged on the covering sheets 2A and 3A of the protective cover 1, respectively. FIG. 16A shows a schematic front view of the vicinity of the opening formed between the two sliders 60A and 61A, and FIG. 16B is along AA in FIG. 16A. A cross-sectional view is shown. As shown in FIG. 16, if the switch 82A as an operation component attached to the electronic device 80A is projected outward from the opening formed between the sliders 60A and 61A only during operation, the operation of the switch 82A is performed. Can be performed without hindrance.

  In the present invention, the direction in which the dentition extends is changed to a substantially right angle when the dentition is shifted from the engaged state to the disengaged state or when the dentition is shifted from the not engaged state to the engaged state. It is also possible to provide a guide roller for making the slider as a guide member. FIG. 17 shows a form in which a slider 60A provided with two guide rollers is used as the slider 60A that moves on the dentitions 20A and 21A of the cover sheets 2A and 3A of the protective cover. FIG. 17A shows a schematic front view in the vicinity of the slider 60A, and FIG. 17B shows a cross-sectional view taken along line BB in FIG. 17A. A shaft 60e extending in the direction of the inner surface side base portion 60d is provided at the head of the outer surface side base portion 60c of the slider 60A (the side closer to the opening formed between the sliders). Each of the guide rollers 60f is rotatably supported. When the engaging tooth rows 20A, 21A arranged at the edges of the covering sheets 2A, 3A come out of the slider 60A toward the opening O7 and are disengaged, the engaging tooth rows 20A, 21A are configured. In a state where the sheet side end portions 20aa and 21aa of the service teeth 20Aa and 21Aa are in contact with the guide roller 60f, the direction substantially perpendicular to the extending direction of the service tooth row engaged with the disengaged service tooth row Be guided to. Therefore, when the position of the slider 60A is changed using a puller (not shown), the guide roller 60f guides the tooth rows 20A and 21A from the slider 60A to the opening O7, or from the opening O7. In order to smoothly guide the operation tooth rows 20A and 21A into the slider 60A, the opening position can be easily changed.

  If the lengths of the engagement tooth rows 20A and 21A engaged with each other by the slider 60A are substantially equal, as shown in FIG. 17, one guide roller 60f is attached to the slider 60A to guide each engagement tooth row. However, if the lengths of the service teeth 20A and 21A engaged with each other by the slider 60A are different, the slider 60A may be provided with only one guide roller 60f for guiding the longer service teeth. Good.

1 illustrates one embodiment of a protective cover used for electrical equipment. (A) is a schematic perspective view of the electric equipment equipped with the protective cover, and (B) is a schematic view of only the protective cover. It is the schematic of the adjacent area | region of the 1st covering sheet and the 2nd covering sheet from the top in FIG. (A) shows the cover sheet in a separated state, and (B) shows the cover sheet in a connected state. It is the schematic of the adjacent area | region of the 2nd coating sheet from the top in FIG. 1, and the 3rd coating sheet from the top. (A) shows the cover sheet in a separated state, and (B) shows the cover sheet in a connected state. It is the schematic of the shape-retaining member arrange | positioned between the sliders between the 1st coating sheet from the top in FIG. 1, and the 2nd coating sheet from the top, and explanatory drawing of the attachment method of a shape-retaining member. It is explanatory drawing of the usage method of the protective cover to which the shape-retaining member shown in FIG. 4 was applied. It is the schematic of the shape-retaining member arrange | positioned between the sliders between the 2nd covering sheet from the top in FIG. 1, and the 3rd covering sheet from the top, and explanatory drawing of the attachment method of a shape-retaining member. It is explanatory drawing of the usage method of the protective cover to which the shape-retaining member shown in FIG. 6 was applied. Fig. 3 shows a protective cover of another embodiment. (A) is a schematic perspective view of the electric equipment with which a protective cover is mounted | worn, (B) is the schematic of the state with which the protective cover was mounted | worn. It is an expanded view of the protective cover shown in FIG. It is the schematic of the shape-retaining member arrange | positioned between the sliders of the protective cover shown in FIG. 8, and explanatory drawing of the attachment method of a shape-retaining member. It is explanatory drawing of the usage method of the protective cover to which the shape-retaining member shown in FIG. 10 was applied. It is a top view which shows the example of a combination of the coating sheet used for the protective cover of this invention. It is the schematic which shows the modification of a shape-retaining member. It is the schematic which shows the modification of another shape-retaining member. It is the schematic which shows the modification of another shape-retaining member. The form which does not install a shape retention member between the sliders of a protective cover is shown. (A) is a schematic front view in the vicinity of an opening formed between two sliders, and (B) shows a cross-sectional view along AA in (A). The form using the slider which provided the guide roller is shown. (A) is a schematic front view in the vicinity of the slider, and (B) is a cross-sectional view taken along line BB in (A). It is the schematic of the electric equipment equipped with the protection cover of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Protective cover 2-7, 2A, 3A, 7A-7D ... Cover sheet 8 ... Slit 9 ... Hole 10-13 ... Tape half body 14 ... Slide fastener 20-29, 20A, 21A ... Duty dentition 20a, 21a, 22a, 23a, 28a, 29a, 20Aa, 21Aa ... toothed teeth 30 ... toothed teeth row 31 ... slider 32 ... box 33 ... butterfly stick 34 ... stopper 40-43 ... box 50-53 ... butterfly stick 60-69, 60A, 61A ... Slider 60b, 61b, 62b, 63b, 68b, 69b ... Locking part 60f ... Guide roller (guide member)
70-75 ... Shape retaining member 70c, 71c ... Leg 72a ... Groove 74b, 75b ... Connection portion O1-O7 ... Opening S1-S3 ... Shape retaining member opening area 80, 80A ... Electric device 82-85 ... Switch row ( Operation parts column)
82a, 83a, 82A ... switch (operation part)
86 ... Row of connection terminals (row of operation parts)
86a: Connection terminal (operation part)

Claims (8)

A protective cover for an electrical device that covers at least a row of operation parts that are operated by an operator in the process of using the device disposed on or inside the housing of the electrical device,
An insulating covering sheet; and an insulating slide fastener attached to the covering sheet and disposed at a position in front of the row of the operation parts;
The slide fastener has a service tooth row extending along the row of the operation parts, and two sliders that mesh the service teeth by displacing the service tooth row from both ends toward the center. And
When the two sliders are moved closer to each other by displacing at least one of the two sliders on the dentition row, at least one of the operation parts is moved by the non-engaged dentition between the two sliders. A protective cover for electrical equipment in which an opening of a size that can be operated is formed. The protective cover for electrical equipment includes at least two covering sheets arranged with edges extending along the row of the operation parts facing each other;
The dentition row of the slide fastener is provided on each of the opposed edges,
Two sliders of the slide fastener are provided on the dentition row of one covering sheet, or one on the dentition row of both covering sheets,
Each slider is positioned at the end of the service tooth row, and at this end position, each slider provided on one service tooth row is fitted to the service tooth at the end of the other service tooth row. Then, when the two sliders are moved closer to each other by displacing at least one of the two sliders on the dentition, the adjacent covering sheets are connected and the two sliders are connected. The protection for electrical equipment according to claim 1, wherein an opening having a size capable of operating at least one of the operating parts is formed by a non-engaged engagement tooth. cover.   3. A shape-retaining member that defines the shape of an opening formed by non-engaged engagement teeth that are arranged between two sliders that are close to each other. The protective cover for electrical equipment according to item 1.   The protective cover for electrical equipment according to claim 3, wherein the slider is provided with a locking portion for connecting the shape retaining member.   5. The protective cover for an electric device according to claim 3, wherein the shape retaining member is an annular member or a semi-annular member provided with a groove portion for inserting a non-engaged dental dentition. 6.   Electricity according to claim 3 or 4, characterized in that the shape-retaining member is an annular or semi-annular member with legs inserted into openings formed by non-engaged dentitions. Protective cover for equipment.   The annular or semi-annular shape retaining member is formed by connecting a plurality of rod-shaped members, and adjacent rod-shaped members are slidable on the peripheral surface of the other rod-shaped member provided on one rod-shaped member. The electric device according to claim 5 or 6, characterized in that the size of an opening formed by non-engaging engagement teeth can be adjusted by being connected via an engaging connection portion. Protective cover. The covering sheet which covers parts other than the row | line | column of the said operation components is further included, The adjacent covering sheet is mutually connected by the slide fastener mechanism, The one of Claims 2-7 characterized by the above-mentioned. The protective cover for electrical equipment according to item 1.

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