Attachment

Abstract

To provide an attachment that enables easy handling of a key while wearing a high voltage insulation protector.SOLUTION: An attachment 10 attached to a grip part of a key 70 comprises: a main body 21 formed of a material with insulation property, shaped in a tabular form having a first face being a surface and a second face 25 being a rear face; a holding part 31 provided on a first edge part 22 being an edge part of the main body 21, to which the grip part is attached; a rising party 41 where the main body 21 extends from the first face towards the second face 25 in a direction apart from the first edge part 21, in a second edge part 23 opposite from the first edge part 22 in the main body 21; and an attachment part 51 provided on the second face 25 of the main body 21, which enables the main body 21 to be attached to and removed from an external arrangement surface.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an attachment. [Background technology]

[0002] In high-voltage power receiving equipment, safety is ensured by opening a disconnecting switch (hereinafter also referred to as DS) when carrying out various tasks such as statutory inspections. The tasks of opening and closing a DS are performed by operating a key, lever, etc. (For example, see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 61-133521 Publication Summary of the Invention [Problem to be solved by the invention]

[0004] Furthermore, during various tasks, including opening and closing the DS, workers wear high-voltage insulating protective gear. High-voltage insulating protective gear consists of gloves made of rubber, an insulating material, and the rubber used has the necessary thickness to ensure insulation.

[0005] On the other hand, the keys used to open and close the DS are not designed to be held or operated while wearing high-voltage insulating protective gear. For example, the size of the keys is small compared to the high-voltage insulating protective gear, which is a thick rubber glove.

[0006] This caused problems such as making it difficult to grip the key while wearing high-voltage insulating protective equipment, and making it difficult to insert and remove the key from the keyhole or turn the key (hereinafter referred to as "making the key difficult to handle").

[0007] The present invention has been made to solve the above-mentioned problems, and has an object to provide an attachment that makes it easier to handle keys while wearing high-voltage insulating protective equipment. [Means for solving the problem]

[0008] In order to achieve the above object, the present invention provides the following means. The attachment of the present invention is an attachment to be attached to the handle portion of a key, and is characterized in that it comprises a main body formed in a plate shape using an insulating material and having a first surface which is the front side and a second surface which is the back side, a holding portion provided at the first end which is the end of the main body and to which the handle portion is attached, a rising portion at the second end of the main body opposite the first end side, whereby the main body extends from the second surface to the first surface side in a direction away from the first end, and an attachment portion provided on the second surface of the main body and which enables the main body to be attached and detached from an external placement surface.

[0009] According to the attachment of the present invention, a key is attached to the holder of the main body, and the size of the key is the same as that of the attachment. The larger key size makes it easier to hold the key even when wearing high-voltage insulating protective gear. It also makes it harder to lose track of the key. In addition, since the main body is made of an insulating material, it is easier to prevent electric shock.

[0010] Even if the key is placed on the surface attached to the attachment, the rising part is separated from the surface. Therefore, it is easier to pick up the key placed on the surface. It is easy to pick up even if you are wearing high-voltage insulating gear. The surface can be a desk or a wall.

[0011] By providing the mounting portion, when the attachment is placed on the placement surface, it is attached in a position where the second surface faces the placement surface. In this position, the rising portion extends in a direction away from the placement surface, making it easier to remove the key placed on the placement surface.

[0012] In addition, it is easier to prepare the key. For example, the key can be placed in advance on a placement surface near the object to be used, and can be placed in advance within reach of the worker who will use the key. In addition, the key can be placed in advance in a position close to the worker and easily visible.

[0013] In the above invention, it is preferable that the attachment portion is provided with a recess formed on the second surface, and a magnetic portion disposed inside the recess. In this way, the key can be removably placed on the placement surface made of a material containing iron.

[0014] In the above invention, it is preferable that the depth dimension of the recess is greater than the height dimension of the magnetic portion when placed in the recess. By doing so, a gap is more likely to form between the magnetic part and the wall surface when the key is placed on the placement surface. In other words, the magnetic part is less likely to come into contact with the placement surface, and the placement surface is less likely to be damaged.

[0015] In the above invention, it is preferable that the main body is provided with a locking portion to which a strap is attached. This allows the strap to be worn around the wrist of the worker, making it easier to prevent the key from dropping to the floor even if the key falls from the worker's hand.

[0016] In the above invention, it is preferable that the locking portion is provided in an area closer to the first end portion than the center of gravity of the main body when the key is attached. By doing this, when the key falls from the worker's hand, the attachment hangs with the key facing upwards. Compared to when the key faces downwards, the key is less likely to come into contact with the surroundings. For example, the key is less likely to come into contact with an electrically conductive part.

[0017] In the above invention, it is preferable that the holding portion has a configuration in which it engages with the main body to hold the key, and that the holding portion has a configuration in which the engagement with the main body is released when a force equal to or greater than a predetermined value is applied to the holding portion.

[0018] In the above invention, it is preferable that the holding portion is configured to break when a force equal to or greater than a predetermined value is applied, thereby causing the key to come off from the main body. By doing so, the key can be easily removed from the attachment when a certain amount of force is applied to the key. For example, it is easier to prevent damage to the key or the object into which the key is inserted.

[0019] In the above invention, it is preferable that the main body has a striped pattern of alternating yellow and black colors. This makes it easier to see the attachment. Effect of the Invention

[0020] The attachment of the present invention has a plate-shaped main body, a holding portion to which the handle of the key is attached, and a rising portion where the main body extends from the first surface to the second surface, thereby making it easier to handle keys while wearing high-voltage insulating protective equipment. [Brief description of the drawings]

[0021] [Figure 1] FIG. 2 is a perspective view illustrating a configuration of an attachment according to an embodiment of the present invention. [Diagram 2] 2 is a view illustrating the configuration of the attachment in FIG. 1 as viewed from the second surface side. [Diagram 3] 2 is a schematic diagram illustrating the configuration of a key that can be attached to the attachment in FIG. 1. [Figure 4] 13 is a perspective view illustrating a configuration of a storage section in the holding section. FIG. [Diagram 5] 13 is a perspective view illustrating a configuration of a lid portion of the holding portion. FIG. [Figure 6] FIG. 4 is a cross-sectional view illustrating a configuration of a mounting portion. [Figure 7]FIG. 7(a) is a schematic diagram illustrating a state in which a key is held by the holding unit, and FIG. 7(b) is a schematic diagram illustrating a state in which the key is released from the holding unit. [Figure 8] FIG. 13 is a schematic diagram illustrating a state in which the attachment is suspended by a strap. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] An attachment 10 according to an embodiment of the present invention will be described with reference to Fig. 1 to Fig. 8. The attachment 10 of this embodiment is adapted to have a key 70 attached thereto. The key 70 is used, for example, to open or insert a DS.

[0023] FIG. 1 is a perspective view illustrating the configuration of an attachment 10 of the present embodiment, and FIG. 2 is a view of the attachment 10 as viewed from the second surface 25 side. As shown in FIGS. 1 and 2, the attachment 10 is provided with a main body 21, a holding portion 31, a rising portion 41, a mounting portion 51, and a locking portion 61.

[0024] The main body 21 is a member formed into a plate shape using an insulating material. The insulating material includes a resin material. For example, the resin material has the insulating performance required for a high-voltage power receiving facility in which a DS is used. In this embodiment, the main body 21 is applied to an example formed using a resin material having insulating performance and further used in a 3D printer that performs three-dimensional modeling by laminating cross-sectional shapes.

[0025] 1 and 2, main body 21 has a plate-like shape extending along an XY plane formed by an X-axis and a Y-axis that are perpendicular to each other. An end of main body 21 on the positive X-axis side is a first end 22, and an end on the negative X-axis side is a second end 23. In main body 21, a surface on the positive Z-axis side that is perpendicular to the XY plane is a first surface 24 that is the front side, and a surface on the negative Z-axis side is a second surface 25 that is the back side.

[0026] In this embodiment, the description will be applied to an example in which the main body 21 is a plate-like member having a rectangular shape in which the dimension in the X-axis direction is longer than the dimension in the Y-axis direction when viewed from the Z-axis direction, and the corners of the first end portion 22 are formed in an arc shape. The dimension of the main body 21 in the Z-axis direction may be a thickness necessary to hold the key 70, and may be a thickness that ensures strength against breakage when the key 70 is used to open and close the DS.

[0027] A striped pattern of alternating yellow and black colors may be applied to the first surface 24 of the main body 21. The striped pattern may be applied by painting the first surface 24, or by placing a sheet-like member with a striped pattern on the first surface 24. By applying a striped pattern of alternating yellow and black in this manner, the attachment 10 can be easily viewed.

[0028] The stripes may be provided on the second surface 25 in addition to the first surface 24, or on a surface of the main body 21 other than the first surface 24 and the second surface 25. The colors constituting the stripes may be a combination of two colors, yellow and black, or a combination of two other colors. Furthermore, the stripes may be a combination of three or more colors.

[0029] The holder 31 has a configuration in which a handle 72 of the key 70 is attached. The holder 31 is provided at the first end 22 of the main body 21, and is provided at the center of the first end 22 in the Y-axis direction. As shown in Fig. 3, the key 70 is provided with an elongated insertion portion 71 that is inserted into the DS, and a handle portion 72 that is wider than the insertion portion 71.

[0030] As shown in Figures 4 and 5, the holding portion 31 is provided with a storage portion 32 which is a recess in which a handle portion 72 provided on the main body 21 is housed, and a lid portion 35 which is disposed at the opening of the storage portion 32 and holds the handle portion 72 between the storage portion 32 and the main body 21.

[0031] 4, the storage section 32 has a recessed shape with an opening that opens toward the second surface 25 side and the first end section 22 side. The recessed depth of the storage section 32 is deep enough to store at least the key 70 therein. The shape of the storage section 32 as viewed from the negative direction of the Z axis may be the same as the shape of the handle section 72.

[0032] Further, a storage protrusion 33 is provided on the surface (also referred to as the bottom surface) on the Z-axis positive side of the storage section 32. The storage protrusion 33 protrudes from the bottom surface in the Z-axis negative direction and has a ridge shape extending along the X-axis direction at the center of the bottom surface in the Y-axis direction.

[0033] The center of the storage protrusion 33 in the Y-axis direction is a plane extending in the direction along the Y-axis, and the two faces adjacent to this plane in the Y-axis direction are inclined faces that slope in the positive direction of the Z-axis as they move away from the plane.

[0034] The periphery of the storage section 32 is provided with a locking recess 34, which is a recess formed in a stepped shape to lock the lid section 35. The depth of the locking recess 34 is shallower than the depth of the storage section 32 and is approximately the thickness of the lid section 35. The locking recess 34 may have a shape similar to that of the storage section 32 when viewed from the negative direction of the Z axis.

[0035] 2, the lid portion 35 is a member that closes the opening of the storage portion 32 that opens toward the second surface 25. The lid portion 35 is also a member that sandwiches the key 70 between the storage portion 32 and the lid portion 35, and fixes the key 70 to the attachment 10.

[0036] Lid portion 35 is a member formed in a plate shape as shown in Fig. 5. When viewed from the negative direction of the Z axis, lid portion 35 has the same shape as locking recess 34, with a portion overlapping with mounting portion 51 being cut out. A lid protrusion 36 is provided on a surface of lid portion 35 facing storage portion 32 in the positive direction of the Z axis.

[0037] Lid protrusion 36 protrudes from lid portion 35 in the positive direction of the Z axis, and has a ridge-like shape extending along the X axis direction through the center in the Y axis direction of lid portion 35. Lid protrusion 36 protrudes most in the positive direction of the Z axis at the center in the Y axis direction, and has a shape that slopes in the negative direction of the Z axis with increasing distance from the center.

[0038] 1, the rising portion 41 is provided at the second end 23 of the main body 21. The rising portion 41 has a shape in which the main body 21 formed in a plate shape is bent toward the first surface 24. Specifically, the rising portion 41 has a shape bent from the second surface 25 side to the first surface 24 side from the first end 22 toward the second end 23. In other words, the rising portion 41 has a shape bent so as to extend in the Z-axis positive direction toward the X-axis negative direction.

[0039] The rising portion 41 may have a configuration in which it bends from the main body 21 and extends while maintaining a planar shape. The direction in which the rising portion 41 extends may be an oblique direction intersecting with the YZ plane, or a vertical direction parallel to the YZ plane. The rising portion 41 may also have a configuration in which, after bending from the main body 21, it bends again and extends in a direction along the main body 21 parallel to the XY plane.

[0040] The rising portion 41 may be formed using at least one planar shape as described above, or may be formed using at least one curved shape. Furthermore, the rising portion 41 may be formed using a combination shape of a planar shape and a curved shape.

[0041] 2, the mounting portion 51 is provided on the second surface 25 of the main body 21. For example, the mounting portion 51 is provided in a central region in the X-axis direction and a central region in the Y-axis direction on the second surface 25. The mounting portion 51 is configured to be detachably disposed on a wall surface.

[0042] 6, the mounting portion 51 is provided with a recess 52 and a magnetic portion 53. The recess 52 is a recessed shape formed in the second surface 25, and the magnetic portion 53 is disposed therein. The magnetic portion 53 is a member disposed inside the recess 52, and is a member that generates a force for detachably adhering to a wall surface formed from a material containing iron as a component.

[0043] In this embodiment, the magnetic part 53 is formed in a cylindrical shape, and the recess 52 is formed in a cylindrical recess shape in which the magnetic part 53 is disposed. The embodiment will be described by applying to an example in which the depth dimension 52D of the recess 52 is longer than the height dimension 53H of the cylindrical magnetic part 53.

[0044] The mounting portion 51 may be any member that can be attached to and detached from a wall surface. For example, the mounting portion 51 may have a configuration including the above-mentioned magnetic portion 53, or may have a configuration including an adhesive material that allows repeated attachment and detachment.

[0045] The locking portion 61 has a configuration for attaching a strap to prevent the attachment 10 from falling off. For example, the locking portion 61 has a through hole through which an attachment string of the strap is inserted.

[0046] 2, the locking portion 61 is provided on the main body 21. The locking portion 61 is provided on the second surface 25 side of the main body 21. The locking portion 61 is preferably provided in an area closer to the first end 22 than the center of gravity G of the main body 21 when the key 70 is attached. The locking portion 61 may be provided in an area closer to the second end 23 than the center of gravity G.

[0047] In this embodiment, an example will be described in which locking portion 61 is provided on the X-axis positive side of center of gravity G of main body 21, at a corner on the Y-axis positive side of second surface 25. Note that locking portion 61 may also be provided on a corner on the Y-axis positive side of first surface 24.

[0048] Next, the release operation of the holding part 31 in the attachment 10 having the above-mentioned configuration will be described with reference to Fig. 7. First, the holding of the key 70 in the holding part 31 will be described with reference to Fig. 7(a).

[0049] 7(a), the key 70 is held in a state sandwiched between the storage section 32 and the lid section 35 of the holder 31. Specifically, the key 70 is held in a state sandwiched between the storage protrusion 33 of the storage section 32 and the lid protrusion 36 of the lid section 35. The key 70 abuts against a plane that is provided in the center of the storage protrusion 33 in the Y-axis direction and extends in the X-axis direction, and abuts against a ridge of the lid protrusion 36 that extends in the X-axis direction.

[0050] The force that holds the key 70 in place is generated by deformation of at least one of the main body 21 in which the storage section 32 is formed and the lid section 35. For example, when the lid section 35 is attached to the storage section 32 with the key 70 sandwiched therebetween, at least one of the main body 21 and the lid section 35 is deformed. As this deformation tries to return to its original shape, a force that holds the key 70 in place is generated.

[0051] The force applied to the attachment 10 to rotate the key 70, in other words, the force to rotate it around the X-axis, is transmitted to the key 70 via the flat surface of the storage protrusion 33. The contact area between the flat surface of the storage protrusion 33 and the key 70 is determined based on the force (also referred to as torque) required to rotate the key 70 and the magnitude of the force to clamp and hold the key 70.

[0052] The magnitude of the force is preferably equal to or greater than the minimum force required to rotate the lock into which the key 70 is inserted (in this embodiment, this corresponds to the portion of the DS into which the key 70 is inserted). Furthermore, the magnitude of the force is more preferably less than the maximum force required to rotate the lock into which the key 70 is inserted. Furthermore, the magnitude of the force is even more preferably less than the minimum force that will damage the key 70 or the lock. Here, the minimum force that will damage the key 70 or the lock is also referred to as the specified force.

[0053] Next, the operation of releasing the key 70 from the holder 31 will be described with reference to FIG. If the part of the DS where the key 70 is inserted breaks down or exceeds the range in which the key 70 can be rotated, the resistance to rotating the key 70 increases. As a result, when the force applied to the attachment 10 to rotate the key 70 exceeds a predetermined force, the key 70 will no longer follow the rotation of the attachment 10. In other words, the force to rotate the key 70 due to contact between the flat surface of the storage protrusion 33 and the key 70 cannot be transmitted, the flat surface of the storage protrusion 33 and the key 70 separate, and the part of the key 70 in the positive direction of the Y axis collides with the inclined surface of the storage protrusion 33.

[0054] When viewed relative to the attachment 10, the key 70 rotates relative to the attachment 10, with the ridge of the cover protrusion 36 as a fulcrum. The part of the key 70 in the positive Y-axis direction approaches and collides with the inclined surface of the storage protrusion 33, and the part in the negative Y-axis direction approaches the cover 35.

[0055] The worker rotating the attachment 10 may be able to perceive that the key 70 is no longer following the rotation of the attachment 10 due to a change in the resistance force when rotating, or due to a sound (e.g., a "clack") made by the part of the key 70 in the positive Y-axis direction colliding with the inclined surface of the storage protrusion 33.

[0056] At this stage, if the force applied to the attachment 10 is reduced, the force holding the key 70 causes the flat surface of the storage protrusion 33 to come into contact with the key 70 again. In other words, the attachment 10 rotates in the original direction.

[0057] When the attachment 10 is further rotated, the portion of the key 70 in the negative Y-axis direction comes into contact with the lid portion 35. The force with which the portion of the key 70 in the negative Y-axis direction presses the lid portion 35 increases as the attachment 10 is rotated. When the amount of deformation of the lid portion 35 pressed by the key 70 exceeds a threshold value, as shown in FIG. 7(b), the lid portion 35 breaks and comes out of the locking recess 34, and the key 70 is released from the holder 31.

[0058] According to the attachment 10 configured as described above, as shown in Fig. 2, the key 70 is attached to the holder 31 of the main body 21, and the size of the key 70 is large enough to include both the key 70 and the attachment 10. The larger size of the key 70 makes it easier to hold the key 70 even when wearing high-voltage insulating protective gear. It also makes it harder to overlook the key 70. In addition, because the main body 21 is made of an insulating material, it is easier to prevent electric shock.

[0059] Even if the key 70 attached to the attachment 10 is placed on a desk or a wall, the rising portion 41 is separated from the placement surface. This makes it easier to pick up the key 70 placed on the placement surface. It is easy to pick up the key even if you are wearing high-voltage insulating gear.

[0060] By providing the mounting portion 51, when the attachment 10 is placed on a placement surface, the attachment 10 is attached in a position in which the second surface 25 faces the placement surface. In this position, the rising portion 41 extends in a direction away from the placement surface, making it easier to remove the key 70 placed on the placement surface.

[0061] Furthermore, by providing the attachment portion 51, it becomes easier to prepare the key 70. For example, the key 70 can be placed in advance on a wall surface that is a placement surface near the DC for which the key 70 is to be used, and the key 70 can be placed in advance within reach of the worker who will use the key 70. Also, the key 70 can be placed in advance in a position that is close to the worker and easily visible.

[0062] By providing the magnetic portion 53, the key 70 can be removably placed on the placement surface made of a material containing iron.

[0063] By making depth dimension 52D of recess 52 longer than height dimension 53H of magnetic part 53, a gap is more likely to be formed between magnetic part 53 and the placement surface when key 70 is placed on the placement surface. In other words, magnetic part 53 is less likely to come into contact with the placement surface, making it less likely to damage the placement surface.

[0064] Providing the locking portion 61 allows the strap S to be hung around the wrist of the worker. Even if the key 70 falls from the worker's hand, the key 70 can be easily prevented from falling to the floor.

[0065] By providing the locking portion 61 in an area closer to the first end 22 than the center of gravity G, when the key 70 falls from the hand of the worker, the key 70 hangs from the attachment 10 in a position facing upward rather than horizontally as shown in Fig. 8. Compared to when the key 70 faces downward, the key 70 is less likely to come into contact with the surroundings. For example, the key 70 is less likely to come into contact with an electrically-conductive part of the DS.

[0066] By holding the key 70 in this manner sandwiched between the storage protrusion 33 of the storage section 32 and the lid protrusion 36 of the lid section 35, the key 70 can be easily removed from the attachment 10 when a predetermined force is applied. For example, this makes it easier to prevent damage to the key 70 or the DS, which is the object into which the key 70 is inserted.

[0067] In the above embodiment, an example has been described in which the lid portion 35 breaks and the key 70 comes off from the attachment 10 when a predetermined force is applied, but the lid portion 35 may come off from the storage portion 32 and the key 70 may come off from the attachment 10 when a predetermined force is applied. [Explanation of symbols]

[0068]

[0033] 10... attachment, 21... main body, 22... first end, 23... second end, 24... first surface, 25... second surface, 31... holding portion, 41... rising portion, 51... mounting portion, 52... recess, 53... magnetic portion, 61... locking portion, 70... key, 72... handle portion, G... center of gravity position

Claims

1. An attachment that is attached to a handle of a key, A main body formed in a plate shape using an insulating material and having a first surface as a front surface and a second surface as a back surface; a holding portion provided at a first end portion which is an end portion of the main body and to which the handle portion is attached; a rising portion at a second end of the main body opposite to the first end, the rising portion being an extension of the main body from the second surface toward the first surface in a direction away from the first end; an attachment portion provided on the second surface of the main body, the attachment portion enabling the main body to be attached to and detached from an external arrangement surface; An attachment characterized in that:

2. 2. The attachment according to claim 1, wherein the mounting portion is provided with a recess formed in the second surface, and a magnetic portion disposed inside the recess.

3. 3. The attachment according to claim 2, wherein a depth dimension of the recess is greater than a height dimension of the magnetic portion when placed in the recess.

4. 2. The attachment according to claim 1, wherein the main body is provided with a locking portion to which a strap is attached.

5. 5. The attachment according to claim 4, wherein the locking portion is provided in an area closer to the first end portion than the center of gravity of the main body when the key is attached.

6. 2. An attachment as described in claim 1, wherein the holding portion is configured to engage with the main body to hold the key, and the holding portion is configured to disengage from the main body when a force greater than a predetermined value is applied.

7. 2. The attachment according to claim 1, wherein the holding portion is configured to break when a force greater than a predetermined value is applied thereto, thereby causing the key to come off from the main body.

8. 2. The attachment according to claim 1, wherein the body has a striped pattern of alternating yellow and black colors.

Images