JP2012255260A - Protective cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a protective cap which can be easily attached and does not become obstructive when operating a locking device.SOLUTION: A protective cap 1 includes a cap body 10 and an elastic body 20 attached to the cap body 10. The cap body 10 includes a cover part 11 and a peripheral wall 12 erected from the cover part 11, and on the peripheral wall 12, a body inner surface 13 to be stably brought into contact with a magnetic absorption target body and recesses 14 opened to the body inner surface 13 are formed. To the recesses 14, a magnet 31 held by a pair of yokes 32 is attached respectively. On an outer surface 34 of the yoke 32, a projection 35 projected to the side of the recess 14 is formed. At the recess 14, a fitting hole 15 corresponding to the projection 35 of the yoke 32 is formed. The recess 14 is provided on an inner side of the elastic body 20.

Description

  The present invention relates to a protective cap that covers a keyhole or a locking handle attached to a magnetic adsorbent such as an outdoor switchboard.

  2. Description of the Related Art Conventionally, a protective cap that prevents water and dust from entering inside through a keyhole formed in a door or the like of an outdoor switchboard is known. For example, according to Patent Document 1, the protective cap has a base body attached to the door and a cap body that covers the keyhole and the locking handle. The cap body is rotatably attached to the base body. A spring is attached between the cap body and the base body so as to be extendable and contractible. At the time of locking or unlocking operation, the cap body is rotated to expose the keyhole, and the state exposed by the elastic force of the spring can be maintained.

JP 11-324425 A (JP 11-324425A)

  When the protective cap as described above is attached to the door, the base body is sandwiched between the locking handle and the door. Therefore, when the protective cap is attached after the locking handle is attached, the locking handle has to be removed, which makes it difficult to attach the protection cap. In addition, the cap body with the keyhole exposed may close during operation due to strong wind or spring deterioration, etc., and it must be locked or unlocked while holding it with one hand. However, there was a problem that the cap body was in the way.

  This invention makes it a subject to provide the protective cap which can be attached easily and does not become obstructive at the time of operation of a locking device.

  The present invention includes a cap main body that can be attached to a magnetic adsorbent, and an elastic body positioned between the cap main body and the magnetic adsorbent, the cap main body standing from the cover portion. And a peripheral wall that can be brought into contact with the magnetic adsorbent, and relates to an improvement in a protective cap that can accommodate at least a part of the locking device in a cavity formed by the cover part and the peripheral wall.

  The present invention is characterized in that, in the protective cap, a recess is formed in the inner wall of the main body that contacts the magnetic adsorbent, and a magnet is attached to the recess.

  As one embodiment of the present invention, a yoke is disposed on a pair of opposed surfaces of the magnet, and the yoke is opposite to the inner surface facing the magnet and opposite to the recess. Including the outer surface.

  As another embodiment, the yoke has a protrusion protruding from the outer surface, and the recess has a fitting hole corresponding to the protrusion.

  As another embodiment, the plurality of fitting holes are formed on a coaxial line.

  As another embodiment, the magnet is disposed inside the elastic body that is continuously mounted along the vicinity of the peripheral wall.

  As another embodiment, a groove for holding the elastic body is formed on the inner surface of the main body, and the elastic body has a bottom end surface located in the groove and a top end surface protruding from the groove, A side edge surface of the yoke that contacts the magnetic adsorbent is positioned between the inner surface of the main body and the top end surface of the elastic body.

  In this invention, the protective cap can be attached to the magnetic object such as a door by the magnet's attractive force. Can be easily installed. Further, since the protective cap is only attracted to the magnetic object by the magnet's attracting force, it can be easily removed. Furthermore, the removed protective cap may be attached to a place away from the locking handle, etc., so that it will not interfere with locking or unlocking, and the removed protective cap may fall or be lost. Nor.

The perspective view of a protective cap. II-II sectional view taken on the line of FIG. The III partial enlarged view of FIG.

  1 to 3 show a protective cap 1 which is an example of an embodiment of the present invention. 1 is a perspective view of the protective cap 1 and shows a part of the assembled state, FIG. 2 is a sectional view taken along the line II-II in FIG. 1, and FIG. 3 is an enlarged view of a portion III in FIG. The protective cap 1 has a longitudinal direction Y, a transverse direction X orthogonal thereto, a virtual longitudinal center line PP that bisects the dimension in the transverse direction X, and a virtual transverse center line Q that bisects the dimension in the longitudinal direction Y. -Q. The protective cap 1 is substantially symmetrical with respect to the virtual vertical center line PP and the virtual horizontal center line QQ.

  The protective cap 1 preferably includes a cap body 10 formed of a non-magnetic material such as a synthetic resin, and a loop-shaped and frame-shaped elastic body (seal) 20 attached to the cap body 10. The cap body 10 includes a cover portion 11 and a peripheral wall 12 rising from the cover portion 11. The peripheral wall 12 has a main body inner surface 13 that stably contacts a magnetic adsorbent such as a door, and an opening in the main body inner surface 13. And recesses 14 are formed. The two recesses 14 are located on the virtual vertical center line PP, and two recesses 14 are formed apart from each other in the vertical direction Y. Magnets 31 sandwiched between a pair of yokes 32 are respectively attached to the recesses 14.

  Examples of the magnetic adsorber (not shown) to which the protective cap 1 is attached include a door of a switchboard or the like, to which a keyhole and a locking handle are attached. At least a part of the keyhole and the locking handle can be covered with the protective cap 1. Specifically, the cap body 10 has a cavity formed by the cover portion 11 and the peripheral wall 12, and a keyhole and a locking handle can be accommodated in the cavity. The magnetic adsorbent is formed of a magnetic metal such as iron, and the protective cap 1 can be adsorbed to the magnetic adsorbent by the attractive force of the magnet 31.

  The yoke 32 amplifies the attracting or attracting force of the magnet 31 and contacts the inner surface 33 that contacts the upper and lower surfaces of the magnet 31 in the drawing and the upper and lower surfaces of the recess 14 on the opposite side of the inner surface 33. And an outer surface 34. A projection 35 is formed on the outer surface 34 so as to protrude toward the concave portion 14. The protrusion 35 is formed by denting the inner surface 33 of the yoke 32 toward the outer surface 34, and a recess corresponding to the protrusion 35 is formed on the inner surface 33. The protrusion 35 is located substantially at the center of the yoke 32. The surface area of the inner surface 33 of the yoke 32 is formed to be larger than the surface area of the magnet 31 in contact therewith.

  A fitting hole 15 corresponding to the protrusion 35 of the yoke 32 is formed in the recess 14. The fitting hole 15 is disposed on the virtual vertical center line PP. The fitting hole 15 located on the inner side in the vertical direction Y, that is, on the imaginary horizontal center line Q-Q passes through the peripheral wall 12, but the fitting hole 15 located on the outer side in the vertical direction Y passes through the peripheral wall 12. Absent. Since the fitting hole 15 on the outer side in the vertical direction Y does not penetrate the peripheral wall 12, dust or the like is prevented from entering from the outside to the inside of the protective cap 1 through the hole.

  In this embodiment, the fitting hole 15 has a cylindrical shape, and the virtual axis extending in the vertical direction Y coincides with the virtual vertical center line PP of the protective cap 1. Thus, by making the fitting hole 15 coincide with the virtual vertical center line PP, the yoke 32 can be rotated with respect to the concave portion 14 with the projection 35 as a fulcrum. However, in this embodiment, since the rotation of the yoke 32 is regulated by the recess 14, it can be rotated within a range of several degrees. By rotating the yoke 32 in this way, it is possible to make contact with the magnetic object to be adsorbed on the surface, so that it is possible to prevent the attraction force of the magnet 31 from being reduced, and the protective cap 1 is in close contact with the door or the like. Can be made.

  A continuous groove 16 is formed in the main body inner surface 13 of the peripheral wall 12 along the vicinity of the peripheral wall, and an elastic body 20 is attached to the groove 16. As shown in FIG. 3, the elastic body 20 has a bottom end surface 21 located in the groove 16 and a top end surface 22 that protrudes from the groove 16 and is located farthest from the bottom end surface 21. The side edge surface 36 of the yoke 32 that contacts the magnetic attractant is located between the main body inner surface 13 and the top end surface 22 of the elastic body 20. Therefore, in the state of FIG. 3 in which the elastic body 20 is not bent, the yoke 32 does not protrude from the elastic body 20. However, when this is attached to the magnetic object to be adsorbed, the side edge surface 36 of the yoke 32 contacts the magnetic object to be adsorbed while the elastic body 20 is bent by the adsorbing force of the magnet 31. Accordingly, there is no gap between the protective cap 1 and the magnetic adsorbent, and they are in close contact with each other, and dust and water can be prevented from entering from between the protective cap 1 and the magnetic adsorbent. Can do.

  Since the concave portion 14 is provided inside the elastic body 20 and the magnet 31 is attached to the concave portion 14, when the elastic body 20 is bent and the protective cap 1 and the magnetic attractant are brought into close contact with each other, the protective cap 1 is externally attached. It is also possible to protect the magnet 31 from the dust. Accordingly, it is possible to prevent a decrease in the attractive force due to the dust adhering to the magnet 31.

  Since the protective cap 1 as described above has a cavity formed by the cover portion 11 and the peripheral wall 12, the keyhole and the locking handle can be accommodated in the cavity. Since the protective cap 1 can be attached to the magnetic object by the attractive force of the magnet 31, no special work is required when attaching the keyhole or the locking handle. That is, even if these locking devices are already installed on the magnetic adsorbent, they can be easily protected by the protective cap 1. At the time of locking / unlocking the key, the protective cap 1 can be removed simply by removing it against the attractive force of the magnet 31. For example, if the removed protective cap 1 is adsorbed to the other part of the door, it will not interfere with the operation, and will not be dropped or lost.

  As shown in FIG. 1, in such a protective cap 1, when the magnet 31 is attached to the cap body 10, the yoke 32 is inserted into the recess 14, and each projection 35 is fitted into the fitting hole 15. . These yokes 32 are spaced apart in the longitudinal direction Y, and the magnet 31 is inserted into the separated portion. In a state where the magnet 31 is inserted, the length dimension from the projection 35 of one yoke 32 to the projection 35 of the other yoke 32 is larger than the separation dimension in the longitudinal direction Y of the recess 14. Therefore, by inserting the magnet 31 between the yokes 32, the projections 35 of the yoke 32 are held in the fitting holes 15. The magnet 31 and the yoke 32 are attracted to each other by the attracting force of the magnet 31. Therefore, the magnet 31 does not come out from between the yokes 32.

  The magnet 31 and the yoke 32 are not detached from the recess 14 simply by forming the projection 35 on the yoke 32 and inserting the projection 35 into the fitting hole 15, so a special member is required to hold them in the recess 14. And not. Further, since it is only necessary to insert the magnet 31 and the yoke 32 into the recess 14, a tool or the like for mounting them is unnecessary.

  In this embodiment, two recesses 14 are formed, and the magnets 31 are attached to these recesses 14 respectively. However, the present invention is not limited to this. For example, you may form the recessed part 14 1 or 3 or more. Further, the two surfaces of the magnet 31 facing each other are sandwiched between the pair of yokes 32, but these two surfaces may be surrounded by a continuous U-shaped yoke. In this case, the magnet 31 is disposed between the yokes facing each other after the yoke is bent into the recess 14 and the projection 35 is inserted into the fitting hole 15. The yoke is not an essential component, and can be used as a single magnet depending on the attractive force of the magnet 31. In that case, it can prevent that a magnet remove | deviates from a recessed part by forming a protrusion in a magnet.

The size of the cavity formed by the cover portion 11 and the peripheral wall 12 can be changed as appropriate depending on the size of the keyhole and the locking handle.
In addition to the materials described in this specification, various known materials that are usually used in this type of field can be used for each component constituting the protective cap 1 without limitation.

DESCRIPTION OF SYMBOLS 1 Protective cap 10 Cap main body 11 Cover part 12 Perimeter wall 13 Main body inner surface 14 Recess 15 Fitting hole 16 Groove 20 Elastic body 21 Bottom end surface 22 Top end surface 31 Magnet 32 York 33 Inner surface 34 Outer surface 35 Projection 36 Side edge surface

Claims (6)

A cap main body that can be attached to the magnetic adsorbent, and an elastic body positioned between the cap main body and the magnetic adsorbent, the cap main body standing up from the cover and A protective cap having a peripheral wall that can be brought into contact with an adsorbed body, and capable of accommodating at least a part of the locking device in a cavity formed by the cover portion and the peripheral wall;
The protective cap according to claim 1, wherein the peripheral wall is formed with a recess opening in an inner surface of the main body that contacts the magnetic adherend, and a magnet is attached to the recess.   2. The yoke according to claim 1, wherein a yoke is disposed on a pair of surfaces facing each other of the magnet, and the yoke includes an inner surface facing the magnet and an outer surface opposite to the inner surface and facing the recess. Protective cap.   The protective cap according to claim 1, wherein a protrusion protruding from the outer surface is formed on the yoke, and a fitting hole corresponding to the protrusion is formed on the recess.   The protective cap according to claim 2 or 3, wherein the plurality of fitting holes are formed on a coaxial line.   The said magnet is a protective cap in any one of Claims 1-4 arrange | positioned inside the said elastic body continuously mounted along the vicinity of the said surrounding wall. A groove for holding the elastic body is formed on the inner surface of the main body, and the elastic body has a bottom end surface located in the groove and a top end surface protruding from the groove,
The protective cap according to claim 1, wherein a side edge surface of the yoke that contacts the magnetic adsorbent is located between the inner surface of the main body and the top end surface of the elastic body.

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