JP2017207330A - Instrument casing repair tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an instrument casing repair tool, even when a sealing screw is damaged by opening a cover, capable of reusing a base and the cover of the existing instrument casing.SOLUTION: An instrument casing repair tool includes an instrument casing repair tool body 7 and a sealing screw 4F for the instrument casing repair tool. The instrument casing repair tool body 7 includes a connection part 71 for connecting an arm part 72 with a through-hole and an arm part 73 with a screw hole. The sealing screw 4F for the instrument casing repair tool, includes: a large-diameter screw part 45 having a diameter larger than that of a sealing-screw insertion hole 21 of the cover 2 and threadedly engaged with a screw hole 74; a shaft part 46 provided at one end of the large-diameter screw part 45 for being inserted into the sealing-screw insertion hole 21; and a head part 41 with a sealing hole, provided at the other end of the screw part.SELECTED DRAWING: Figure 26

Description

  The present invention relates to an instrument box that accommodates an instrument such as a watt hour meter used outdoors.

  Conventionally, there has been an instrument box used to protect a watt-hour meter used outdoors from rain dew or impact. The watt-hour meter is accommodated in a space formed in the base (main body) and the cover. The instrument box is a combination of a base and a cover. For example, a sealing screw loosely penetrated at the lower end of the cover is screwed into a female screw of a sealing screw portion provided at the lower end of the base, or made of a synthetic resin. It is fixed to the lower end of the instrument box by being screwed into the female screw hole. An instrument box that houses a watt-hour meter, for example, loosens the sealing line into a sealing through-hole provided in each of the base and the cover and a sealing through-hole penetrating the head of the sealing screw in the diameter direction. In a state where it is passed through, the both ends of the sealing wire are crimped by a sealing tool to prevent illegal use of the watt-hour meter.

Japanese Patent No. 5415470

  However, watt-hour meter boxes used outdoors are exposed to ultraviolet rays and wind and rain. For this reason, when opening the instrument box cover, such as when replacing or investigating watt-hour meters, the screwed part of the sealing screw or female screw of the sealing screw part sticks mainly due to deterioration over time such as rust. There were many cases. Therefore, when the sealing screw is rotated in the loosening direction, the head portion of the sealing screw and the screwed portion of the sealing screw portion with the female screw are often damaged.

  In addition, when the instrument box base has a female screw hole made of synthetic resin, the screw screw made of resin may be worn due to aging or the like, and the sealing screw may idle and be unable to be fixed.

  If a part of the sealing screw tip side remains on the female screw of the sealing screw part provided at the lower end of the instrument box base, or if the thread of the female screw hole made of synthetic resin is worn, the instrument box The instrument box must be replaced in addition to the original work such as replacement of the watt hour meter or investigation, because the power cannot be closed and sealed normally. Time has occurred, and various problems such as ease of work and efficiency, and high installation costs have occurred.

  Further, the technique described in Patent Document 1 has a structure different from that of a conventional instrument box, and an existing instrument box cannot be reused. Therefore, it is necessary to replace the base and cover with a dedicated new base and cover.

  In addition, in the above-described conventional technology, even when the sealing screw is carefully loosened on the assumption that the sealing screw or the female screw is rusted and brittle when the cover is opened, the sealing screw In many cases, the screw breaks, and the sealing screw cannot be sealed again due to damage to the sealing screw.

  The present invention has been made in view of the above, and provides an instrument box repair tool that can reuse the base and cover of an existing instrument box even if the sealing screw is damaged by opening the cover. For the purpose.

  In order to solve the above-described problems and achieve the object, an instrument box repair tool is an instrument box that accommodates an instrument in a space formed by combining a base and a cover, and the base and the cover are connected continuously. In the instrument box repair tool for repairing the instrument box when the fastening device having a sealing screw penetrating through the base and the female screw of the sealing screw portion in the base is defective, the penetrating hole is provided so as to contact the base An arm portion with a hole, a screw hole facing the arm portion with a through hole and for inserting the sealing screw, an arm portion with a screw hole for contacting the cover, the arm portion with a through hole, and the screw An instrument box repair tool main body provided with a connecting part for connecting the arm part with a hole, and a larger diameter than the insertion hole of the sealing screw of the cover and for screwing into the screw hole Screw part and the seal A seal for an instrument box repair tool comprising a shaft portion provided at one end of the large-diameter screw portion for insertion into an insertion hole of a screw and a head with a sealing hole provided at the other end of the large-diameter screw portion And a screw.

  With this structure, even if the sealing screw is damaged by opening the cover, the cover and the cover of the existing instrument box can be reused to fix the cover to the base.

  In order to solve the above-described problems and achieve the object, an instrument box repair tool is an instrument box that accommodates an instrument in a space formed by combining a base and a cover, and the base and the cover are connected continuously. In the instrument box repair tool for repairing the instrument box when the fastening device having a sealing screw penetrating through the base and the female screw of the sealing screw portion in the base is defective, the penetrating hole is provided so as to contact the base An arm portion with a hole, a screw hole facing the arm portion with a through hole and for inserting the sealing screw, an arm portion with a screw hole for contacting the cover, the arm portion with a through hole, and the screw An instrument box comprising an instrument box repair tool main body comprising a connecting part for connecting an arm part with a hole, a screw part to be inserted into the screw hole, and a head with a sealing hole provided at the other end of the screw part Sealing screw for repair tool A flange portion attached to the screw portion of the sealing screw and having an outer shape larger than the insertion hole of the sealing screw of the cover; and protruding from the flange portion and insertable into the insertion hole of the sealing screw A sealing screw tip cap having a protrusion.

  With this structure, even if the sealing screw is damaged by opening the cover, the cover and the cover of the existing instrument box can be reused to fix the cover to the base.

  In order to solve the above-described problems and achieve the object, an instrument box repair tool is an instrument box that accommodates an instrument in a space formed by combining a base and a cover, and the base and the cover are connected continuously. In the instrument box repair tool for repairing the instrument box when the fastening device having a sealing screw penetrating through the base and the female screw of the sealing screw portion in the base is defective, the penetrating hole is provided so as to contact the base An arm portion with a hole, a screw hole facing the arm portion with a through hole and for inserting the sealing screw, an arm portion with a screw hole for contacting the cover, the arm portion with a through hole, and the screw An instrument box repair tool main body including a connecting portion for connecting the arm portion with a hole, a screw portion that is shorter than a length of the arm portion with a through hole and the arm portion with a screw hole, and is inserted into the screw hole; The screw And a sealed hole with a head that is provided on the other end.

  With this structure, even if the sealing screw is damaged by opening the cover, the cover and the cover of the existing instrument box can be reused to fix the cover to the base.

  In order to solve the above-described problems and achieve the object, an instrument box repair tool is an instrument box that accommodates an instrument in a space formed by combining a base and a cover, and the base and the cover are connected continuously. In the instrument box repair tool for repairing the instrument box when the fastening device having a sealing screw penetrating through the base and the female screw of the sealing screw portion in the base is defective, the penetrating hole is provided so as to contact the base An arm portion with a hole, a screw hole facing the arm portion with a through hole and for inserting the sealing screw, an arm portion with a screw hole for contacting the cover, the arm portion with a through hole, and the screw An instrument box repair tool main body provided with a connecting part for connecting the arm part with a hole, the arm part with a through hole, a cover tightening portion of the instrument box, and a screw hole into which the sealing screw is inserted. Screw If, provided at the other end of the threaded portion, and a seal screw for the meter box repair instrument comprising a head with seal bore.

  With this structure, even if the female screw of the sealing screw portion is worn by opening the cover, the cover can be fixed to the base by reusing the base and cover of the existing instrument box.

  As a preferred aspect, the instrument box repair tool is configured such that the arm portion with through hole and the arm portion with screw hole sandwich a cover tightening portion at one end of the arm portion with through hole or the arm portion with screw hole. There is a bent portion bent in the direction opposite to the clamping direction.

  With this structure, the instrument box repair tool body can easily hold the base and the cover at the tightened portion of the cover.

  According to the present invention, even if the instrument box is normally closed and cannot be sealed due to breakage of the seal screw of the instrument box or wear of the female screw of the seal screw part, etc., by using the instrument box repair tool, The base and cover of an existing instrument box can be reused and the instrument box can be normally closed and sealed. And it is possible to reduce the number of defective instrument box replacements associated with watt-hour meter replacements and surveys, to suppress power outages and work, and to facilitate work and increase the cost of equipment.

FIG. 1 is a schematic cross-sectional view of an instrument box. FIG. 2 is a combination diagram schematically showing the front of the instrument box. FIG. 3 is an enlarged cross-sectional view schematically illustrating a state in which the sealing screw is damaged when the cover is opened at the cover tightening portion of the instrument box. FIG. 4 is a plan view showing an instrument box tightening portion in a state where a sealing screw of the instrument box is damaged or a resin thread is worn. FIG. 5 is an explanatory view showing a sealing screw of an existing instrument box. FIG. 6 is an explanatory diagram for explaining the sealing screw tip cap according to the first embodiment. FIG. 7 is an explanatory diagram for explaining the instrument box repair tool body according to the first embodiment. FIG. 8 is an explanatory diagram for explaining a sealing screw of the instrument box repair tool according to the first embodiment. FIG. 9 is a schematic diagram illustrating an attachment procedure of the instrument box repair tool according to the first embodiment. FIG. 10 is a schematic diagram illustrating an attachment state of the instrument box repair tool according to the first embodiment. FIG. 11 is a schematic diagram illustrating an attachment state of the instrument box repair tool according to the second embodiment. FIG. 12 is an explanatory diagram for explaining a sealing screw of the instrument box repair tool according to the second embodiment. FIG. 13: is a top view which shows typically the attachment procedure of the instrument box repair tool main body which concerns on Embodiment 2. FIG. FIG. 14 is a plan view schematically showing a state where sealing is performed through a sealing screw and a sealing hole in a mounting state of the instrument box repair tool according to the second embodiment. FIG. 15 is a cross-sectional view schematically showing an instrument box tightening portion in a state where a sealing screw of the instrument box is damaged. FIG. 16: is sectional drawing which shows typically the attachment procedure of the instrument box repair tool which concerns on Embodiment 2. FIG. FIG. 17 is a cross-sectional view schematically showing a state where sealing is performed through a sealing screw and a sealing hole in a mounting state of the instrument box repair tool according to the second embodiment. FIG. 18 is a schematic diagram illustrating an attachment state of the instrument box repair tool according to the third embodiment. FIG. 19 is an explanatory diagram of a sealing screw of the instrument box repair tool according to the third embodiment. FIG. 20 is an explanatory diagram for explaining a sealing screw of the instrument box repair tool according to the third embodiment. FIG. 21 is a cross-sectional view showing an instrument box tightening portion in a state where a resin screw thread of the instrument box is worn. FIG. 22 is a cross-sectional view illustrating an attachment procedure of the instrument box repair tool according to the third embodiment. FIG. 23 is a cross-sectional view illustrating an attachment state of the instrument box repair tool according to the third embodiment. FIG. 24 is a plan view illustrating a procedure for mounting the instrument box repair tool body according to the third embodiment. FIG. 25 is a plan view illustrating an attachment state of the instrument box repair tool according to the third embodiment. FIG. 26 is a cross-sectional view illustrating a procedure for attaching the instrument box repair tool according to the fourth embodiment. FIG. 27 is a cross-sectional view illustrating a mounting state of the instrument box repair tool according to the fourth embodiment. FIG. 28 is an explanatory diagram for explaining a sealing screw of the instrument box repair tool according to the fourth embodiment. FIG. 29 is a plan view illustrating a procedure for attaching the instrument box repair tool body according to the fourth embodiment. FIG. 30 is a plan view illustrating an attachment state of the instrument box repair tool according to the fourth embodiment.

  Hereinafter, the present invention will be described in detail with reference to the drawings. The present invention is not limited by the following modes for carrying out the invention (hereinafter referred to as embodiments). In addition, constituent elements in the following embodiments include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those in a so-called equivalent range. Furthermore, the constituent elements disclosed in the following embodiments can be appropriately combined.

(Embodiment 1)
FIG. 1 is a schematic cross-sectional view of an instrument box. FIG. 2 is a combination diagram schematically showing the front of the instrument box. The right side of FIG. 2 is a front view of the cover 2, and the left side of FIG. 2 is a front view of the base 3 with the cover omitted. FIG. 3 is an enlarged cross-sectional view schematically illustrating a state where the cover and the base fixing mechanism are broken when the cover is opened. FIG. 4 is a plan view showing an instrument box tightening portion in a state where a sealing screw of the instrument box is damaged or a resin thread is worn. As shown in FIGS. 1 and 2, the instrument box 1 has a cover 2, a base 3, and a cover fastening portion 5.

  The instrument box 1 is used to protect a watt-hour meter used outdoors from rain dew or impact. A space 9 formed between the cover 2 and the base 3 accommodates a meter such as a watt hour meter. As shown in FIG. 2, sealing holes 10 (see FIG. 4) provided in the base 3 and the cover 2 and penetrating when the cover 2 and the base 3 are closed, and sealings provided in the cover tightening portion 5. Sealing lines to be described later are inserted into the insertion holes 21 (see FIG. 4) of the screws 4 and the sealing through holes (hereinafter referred to as sealing holes) 49 in the heads of the sealing screws 4. In a state where the sealing line is passed, the sealing line is crimped by a sealing tool described later. The sealing line suppresses the loosening of the sealing screw 4 of the instrument box. Since the sealing screw 4 cannot be loosened unless the sealing line is cut, the instrument box 1 is sealed. As a result, it can be determined from the state of the sealing line that the cover 2 has been opened illegally after an instrument such as a wattmeter is installed in the space 9 formed between the cover 2 and the base 3.

  FIG. 5 is an explanatory view showing a sealing screw of an existing instrument box. The sealing screw 4 includes a screw head (head with a sealing hole) 41, a shaft portion 42, and a screw portion 43. In the present embodiment, a male screw is cut on the outer periphery of the screw portion 43. As an example of the dimensions of the sealing screw 4, the diameter D7 of the head 41 with the sealing hole is 6 mm, the diameter D8 of the shaft portion 42 is 3 mm, and the diameter D6 of the screw portion 43 is 4 mm. Further, the length L6 of the head 41 with the sealing hole is 6 mm, the length L5 of the shaft portion 42 is 15 mm, and the length L4 of the screw portion 43 is 8 mm. The head 41 with the sealing hole has a groove into which a screwdriver is inserted, and the groove width d1 is 1.2 mm.

  As shown in FIG. 3, in the cover tightening portion 5, the cover 2 is provided with an insertion hole 21 for the sealing screw 4. Further, at the cover tightening portion 5, the base 3 is also provided with a female screw 31 as a sealing screw portion. When the cover 2 is closed with respect to the base 3, the sealing screw insertion hole 21 and the female screw 31 of the sealing screw portion overlap, and the sealing screw insertion hole 21 and the female screw 31 of the sealing screw portion communicate with each other. To do. Since the female screw 31 is cut into the female screw 31, the screw portion 43 of the sealing screw 4 is screwed with the female screw 31, and the cover fastening portion 5 fixes the cover 2 to the base 3, as described above. Seal it. As shown in FIG. 3, the tip of the screw portion 43 of the sealing screw 4 is exposed from the female screw 31 of the sealing screw portion of the base 3 and protrudes from the base 3.

  The instrument box 1 is opened with a cover 2 for the purpose of replacement or inspection of an instrument such as a watt hour meter. The cover 2 is often opened and closed after a long period of time such as 5 or 10 years. Moreover, since the instrument box 1 is outside, it is exposed to ultraviolet rays and wind and rain. As a result, depending on the environment in which the sealing screw 4 is placed, rust, corrosion, or the like may proceed on the sealing screw 4 at the cover tightening portion 5, and the sealing screw 4 at the cover tightening portion 5 may deteriorate. Depending on the operation of releasing the fastening of the deteriorated sealing screw 4 and opening the cover 2 of the instrument box 1, the sealing screw 4 is broken and the distal end side 4 </ b> B of the sealing screw 4 remains on the female screw 31 of the base 3. It may become in a state. Such a state can be said to be a case where the fastening device provided with the female screw 31 of the sealing screw portion on the base 3 is defective.

  For example, when the sealing screw 4 in the cover tightening portion 5 is in a deteriorated state or when the screw portion 43 of the sealing screw 4 and the female screw 31 cannot be released due to rust, if the sealing screw 4 is forcibly rotated, the sealing screw 4 As shown in FIG. 3, the shaft part 42 may have a rupture part BK as shown in FIG. 3, which may be the head side 4A of the sealing screw 4 and the tip side 4B of the sealing screw 4.

  In many cases, the front end side 4B of the sealing screw remains on the female screw 31 of the sealing screw portion of the base 3. Conventionally, when the front end side 4B of the sealing screw remains on the female screw 31 of the sealing screw portion of the base 3, the sealing screw 4, the cover 2 and the base 3 are replaced, and the sealing screw 4, the cover 2 and the base 3 after replacement are replaced. Had been destroyed.

  In the first embodiment, the head side 4A of the sealing screw is discarded, but the cover 2, the base 3, and the tip side 4B of the sealing screw are reused. FIG. 6 is an explanatory diagram for explaining the sealing screw tip cap according to the first embodiment. FIG. 7 is an explanatory diagram for explaining the instrument box repair tool body according to the first embodiment. FIG. 8 is an explanatory diagram for explaining a sealing screw of the instrument box repair tool according to the first embodiment. FIG. 9 is a schematic diagram illustrating an attachment procedure of the instrument box repair tool according to the first embodiment. FIG. 10 is a schematic diagram illustrating an attachment state of the instrument box repair tool according to the first embodiment. In the first embodiment, the cover 2 uses the tip cap 6 of the sealing screw 4 shown in FIG. 6, the instrument box repair tool main body 7 shown in FIG. 7, and the seal screw 4C of the instrument box repair tool shown in FIG. , Fixed to the base 3.

  FIG. 6A is a plan view of the tip cap 6 of the sealing screw 4C as viewed from above. FIG. 6B is a side view of FIG. FIG. 6C is a plan view of the tip cap 6 of the sealing screw 4C as viewed from the bottom, and is a plan view seen from the opposite side of FIG. 6A. As shown in FIGS. 6A and 6B, the end cap 6 of the sealing screw 4C protrudes from the flange portion 62 having a circular outer shape when viewed from above, and the difference between the sealing screws. A protrusion 61 that can be inserted into the insertion hole 21 is provided. As shown in FIG. 6C, a concave portion 63 in which a female screw is cut is provided at the center of the flange portion 62.

  The diameter D1 of the tip cap 6 of the sealing screw 4C is larger than the inner diameter D3 (see FIG. 9) of the insertion hole 21 of the sealing screw. In the tip cap 6 of the sealing screw 4C, the diameter D2 of the protrusion 61 is equal to or smaller than the inner diameter D3 (see FIG. 9) of the insertion hole 21 of the sealing screw.

  As shown in FIG. 7, the instrument box repair tool main body 7 includes an arm portion 72 with a through hole, an arm portion 73 with a screw hole, and a connecting portion 71. The arm portion with through hole 72 and the arm portion with screw hole 73 are opposed to each other so that the planes thereof face each other, and the arm portion with through hole 72 and the arm portion with screw hole 73 are substantially perpendicular to the connecting portion 71. The metal plate-like body is bent so as to be. In the first embodiment, the arm portion 72 with through hole and the arm portion 73 with screw hole are opposed to each other, and the connecting portion 71 connects the arm portion 72 with through hole and the arm portion 73 with screw hole as a whole. It is in the shape. The instrument box repair tool body 7 may be U-shaped.

  A through hole 75 is formed in the arm portion 72 with a through hole. A screw hole 74 is formed in the arm portion 73 with a screw hole. A female screw is cut in the screw hole 74.

  The sealing screw head 4A, which is a part of the sealing screw 4 that originally fixed the cover 2 and the base 3 as described above, is removed, and the bolt used instead is the sealing of the instrument box repair tool shown in FIG. Screw 4C. As shown in FIG. 6, the sealing screw 4 </ b> C includes a head 41 with a sealing hole and a screw portion 44 of the sealing screw 4 </ b> C having a male screw cut on the outer periphery.

  As shown in FIGS. 9 and 10, the arm portion 72 with a through hole and the screw hole are located at the cover tightening portion 5 rather than the minimum distance L1 where the base 3 and the cover 2 are fitted together by closing the cover 2. The distance L2 with the attached arm portion 73 is large.

  In the first embodiment, as shown in FIG. 9, the screw portion 44 of the sealing screw 4 </ b> C is screwed into the screw hole 74 of the arm portion 73 with a screw hole. Next, the tip of the screw portion 44 of the sealing screw 4C that passes through the arm portion 73 with the screw hole is screwed with the concave portion 63 (see FIG. 6) of the tip cap 6 of the sealing screw 4C. In this state, the distal end side 4B of the sealing screw which is a part of the first bolt remaining in the female screw 31 of the sealing screw portion of the base 3 is inserted into the through hole 75 of the arm portion 72 with a through hole. .

  By rotating the head 41 with the sealing hole of the sealing screw 4C with a screwdriver or the like, the tip cap 6 of the sealing screw 4C is inserted into the insertion hole 21 of the sealing screw of the cover 2 as shown in FIG. Then, the cover 2 and the base 3 are fixed with the flange portion 62 in contact with the cover 2.

  As shown in FIG. 10, the arm portion 73 with a screw hole receives a reaction force caused by the flange portion 62 coming into contact with the cover 2 than the arm portion 72 with a through hole. The thickness W2 of the arm portion 72 with a through hole is made larger. Thereby, the attitude | position which the flange part 62 contact | abuts to the cover 2 is stabilized. Note that the thickness W1 of the arm portion 73 with screw holes may be the same as the thickness W2 of the arm portion 72 with through holes.

  As described above, the instrument box 1 includes the cover 2 and the base 3 that accommodates the instrument formed in the space 9 formed between the cover 2 and the base 3. Even if the sealing screw 4 is broken and the tip side 4B of the sealing screw in the state of remaining in the female screw 31 of the sealing screw portion of the base 3 remains, the instrument box repair tool body 7, the sealing screw 4C, The base 3 and the cover 2 of the existing instrument box 1 can be reused by the tip cap 6 of the sealing screw 4C. The instrument box repair tool body 7 includes a through-hole arm portion 72 provided with a through-hole 75 into which a distal end side 4B of a sealing screw, which is a part of a first bolt, is inserted, and is opposed to the through-hole arm portion 72 and screwed. The arm part 73 with a screw hole provided with the hole 74, and the connection part 71 which connects the arm part 72 with a through-hole, and the arm part 73 with a screw hole are provided. The sealing screw 4 </ b> C includes a screw portion 44 that penetrates the screw hole 74 and a head portion 41 with a sealing hole provided at one end of the screw portion 44. The end cap 6 of the sealing screw 4C is attached to the other end of the screw portion 44, has a flange portion 62 having an outer shape larger than the insertion hole 21 of the sealing screw, and protrudes from the flange portion 62 and is inserted into the sealing screw. 21 and a protrusion 61 that can be inserted into 21. With these configurations, the cover 2 and the base 3 are fixed in a state where the protruding portion 61 of the tip cap 6 of the sealing screw 4C is inserted into the insertion hole 21 of the sealing screw and the flange portion 62 is in contact with the cover 2. Has been. As a result, the distance L2 between the arm portion 72 with through hole and the arm portion 73 with screw hole is regulated by the connecting portion 71, and the portion where the cover is tightened between the flange portion 62 and the arm portion 72 with through hole. 5 is sandwiched between the cover 2 and the base 3.

  As a result, even if there are sealing screws 4 that cannot be fixed by opening the cover 2, the cover 2 can be fixed to the base 3 by reusing the base 3 and the cover 2 of the existing instrument box 1. As a result, the replacement work of the base 3 and the cover 2 of the existing instrument box 1 can be omitted, and the work efficiency is improved. And the cost of the instrument box 1 is reduced.

(Embodiment 2)
FIG. 11 is a schematic diagram illustrating an attachment state of the instrument box repair tool according to the second embodiment. FIG. 12 is an explanatory diagram for explaining a sealing screw of the instrument box repair tool according to the second embodiment. FIG. 13: is a top view which shows typically the attachment procedure of the instrument box repair tool main body which concerns on Embodiment 2. FIG. FIG. 14 is a plan view schematically showing a state where sealing is performed through a sealing screw and a sealing hole in a mounting state of the instrument box repair tool according to the second embodiment. FIG. 15 is a cross-sectional view schematically showing an instrument box tightening portion in a state where a sealing screw of the instrument box is damaged. FIG. 16: is sectional drawing which shows typically the attachment procedure of the instrument box repair tool which concerns on Embodiment 2. FIG. FIG. 17 is a cross-sectional view schematically showing a state where sealing is performed through a sealing screw and a sealing hole in a mounting state of the instrument box repair tool according to the second embodiment. In addition, the same code | symbol is attached | subjected to the same member and component as what was mentioned above, and the overlapping description is abbreviate | omitted.

  In the second embodiment, as shown in FIG. 11, at the cover tightening portion 5, the minimum distance L1 in which the base 3 and the cover 2 are fitted by closing the cover 2, the arm portion 72 with a through hole, The distance that the arm portion 73 with the screw hole faces is the same. As shown in FIG. 11, for example, the distance L1 is 23 mm, the distance H1 is 7 mm, the distance H2 is 4 mm, the distance H3 is 7 mm, and the distance H4 is 4 mm.

  Even if the sealing screw 4 is broken and remains on the female screw 31 of the sealing screw portion of the base 3 and remains on the distal end side 4B of the sealing screw 4, the instrument box repair tool body 7 And the base 3 and the cover 2 of the existing instrument box 1 can be made reusable by the sealing screw 4D and the nut 8.

  As shown in FIG. 12, the sealing screw 4 </ b> D includes a head 41 with a sealing hole and a screw portion 44. In the second embodiment, a male screw is cut on the outer periphery of the screw portion 44. As an example of the dimensions of the sealing screw 4D, the diameter D7 of the head 41 with the sealing hole is φ6 mm, and the diameter D9 of the screw portion 44 is φ4 mm. Further, the length L6 of the head 41 with the sealing hole is 6 mm, and the length L5A of the screw portion 44 is 15 mm. The head 41 with the sealing hole has a groove into which a screwdriver is inserted, and the groove width d1 is 1.2 mm.

  As shown in FIG. 15, depending on the operation of opening the cover 2 of the instrument box 1, the sealing screw 4 is broken and the tip side 4 </ b> B of the sealing screw 4 remains in the female screw 31 of the base 3. There is. Next, as shown in FIGS. 13 and 16, the cover 2 and the base 3 are sandwiched by the instrument box repair tool main body 7 at the cover tightening portion 5.

  In the second embodiment, the nut 8 is provided to be screwed with the screw portion 44 of the sealing screw 4D of the instrument box repair tool at a position in contact with the outside of the arm portion 73 with the screw hole. For example, the nut 8 is fixed to the outside of the arm portion 73 with a screw hole by welding. As shown in FIGS. 14 and 17, by rotating the head 41 with the sealing hole of the sealing screw 4 </ b> D with a screwdriver or the like, the screw portion 44 of the sealing screw 4 </ b> D is screwed with the female screw 81 of the nut 8. The tip of the screw portion 44 of the sealing screw 4D exposed from is inserted into the screw hole 74 of the arm portion 73 with screw hole.

  As shown in FIG. 11, the screw portion 44 of the sealing screw 4 </ b> D is inserted into the insertion hole 21 of the sealing screw of the cover 2. The length L3 of the screw portion 44 of the sealing screw 4D is shorter than the distance L1 between the arm portion 72 with a through hole and the arm portion 73 with a screw hole. The length L5A of the screw portion 44 of the sealing screw 4D shown in FIG. 12 is such a distance that the screw portion 44 of the sealing screw 4D does not come into contact with the shaft portion 42. As shown in FIG. 11, the sealing screw 4D There is a gap Q between the screw portion 44 and the shaft portion 42. The shaft portion 42 of the sealing screw is appropriately cut with pliers or the like when the remaining broken length is long. And the arm part 73 with a screw hole bends to the arm part 72 with a through-hole. As a result, the cover 2 and the base 3 are fixed in a state where the arm portion 72 with through hole is in contact with the base 3 and the arm portion 73 with screw hole is in contact with the cover 2. The cover tightening portion 5 of the first embodiment can increase the force with which the cover 2 and the base 3 are sandwiched, compared to the cover tightening portion 5 of the second embodiment.

  As shown in FIG. 11, the thickness W1 of the arm portion 73 with screw holes is made smaller than the thickness W2 of the arm portion 72 with through holes. Thereby, the arm part 73 with a screw hole is easy to bend to the arm part 72 side with a through-hole. Note that the thickness W1 of the arm portion 73 with screw holes may be the same as the thickness W2 of the arm portion 72 with through holes.

  As shown in FIGS. 14 and 17, the sealing hole 10 (see FIG. 14) provided in the base 3 and the cover 2 and penetrating when the cover 2 and the base 3 are closed, and the head of the sealing screw 4 are provided. The sealing wire 88 is inserted into the sealing hole 49 for sealing. With the sealing line 88 passed, the sealing line is crimped by the sealing tool 89. The sealing line 88 suppresses the loosening of the sealing screw 4D of the instrument box 1, and the sealing box 4 cannot be loosened unless the sealing line 88 is cut, so that the instrument box 1 is sealed. As a result, it can be determined from the state of the sealing line 88 that the cover 2 has been opened illegally after a meter such as a wattmeter is installed in the space 9 formed between the cover 2 and the base 3.

  As described above, even if there is a sealing screw 4 that cannot be fixed by opening the cover 2, the base 3 and the cover 2 of the existing instrument box 1 are reused to fix the cover 2 to the base 3. Can do. As a result, the replacement work of the base 3 and the cover 2 of the existing instrument box 1 can be omitted, and the work efficiency is improved. And the cost of the instrument box 1 is reduced.

(Embodiment 3)
FIG. 18 is a schematic diagram illustrating an attachment state of the instrument box repair tool according to the third embodiment. FIG. 19 is an explanatory diagram of a sealing screw of the instrument box repair tool according to the third embodiment. FIG. 20 is an explanatory diagram for explaining a sealing screw of the instrument box repair tool according to the third embodiment. FIG. 21 is a cross-sectional view showing an instrument box tightening portion in a state where a resin screw thread of the instrument box is worn. FIG. 22 is a cross-sectional view illustrating an attachment procedure of the instrument box repair tool according to the third embodiment. FIG. 23 is a cross-sectional view illustrating an attachment state of the instrument box repair tool according to the third embodiment. FIG. 24 is a plan view illustrating a procedure for mounting the instrument box repair tool body according to the third embodiment. FIG. 25 is a plan view illustrating an attachment state of the instrument box repair tool according to the third embodiment. In addition, the same code | symbol is attached | subjected to the same member and component as what was mentioned above, and the overlapping description is abbreviate | omitted.

  In the third embodiment, when the base 3 of the instrument box 1 has a hole of the synthetic resin internal thread 31, the thread of the internal thread 31 is worn due to deterioration over time and the sealing screw 4 is idled and cannot be fixed. There is a case. Such a state can be said to be a case where the fastening device provided with the female screw 31 of the sealing screw portion on the base 3 is defective.

  The screw part 43 of the sealing screw 4E shown in FIG. 19, the head 41 with the sealing hole of the sealing screw provided in the other end, and the axial part 42 are provided. As shown in FIG. 20, as an example of the dimension of the sealing screw 4E, the diameter D7 of the head 41 with the sealing hole is 6 mm, the diameter D8 of the shaft portion 42 is 3 mm, and the diameter D6 of the screw portion 43 is 4 mm. is there. Further, the length L6 of the head 41 with the sealing hole is 6 mm, the length L5 of the shaft portion 42 is 20 mm, and the length L4 of the screw portion 43 is 8 mm. The head 41 with the sealing hole has a groove into which a screwdriver is inserted, and the groove width d1 is 1.2 mm. Thus, in the sealing screw 4E, the shaft portion 42 of the sealing screw 4E is longer than the shaft portion 42 (see FIG. 5) of the existing sealing screw 4 by about 5 mm.

  In addition, in a state where the screw portion 43 of the sealing screw 4E is inserted into the female screw 31 of the sealing screw portion of the base 3 and the insertion hole 21 of the sealing screw of the cover 2, a part of the screw portion 43 of the sealing screw 4E is Project from the base 3. In the third embodiment, the instrument box 1 has a nut 8 that is screwed to the screw portion 43 of the sealing screw 4E at a position in contact with the outside of the screw hole arm portion 73 and is welded to the screw hole arm portion 73.

  In the third embodiment, as shown in FIG. 18, at the cover tightening portion 5, the minimum distance L1 in which the base 3 and the cover 2 are fitted by closing the cover 2, the arm portion 72 with a through hole, The distance from the screw hole-equipped arm portion 73 is the same. The length L4 of the screw portion 43 of the sealing screw 4E shown in FIG. 20 is larger than the thickness W2 of the arm portion 73 with screw holes. For example, the distance L1 is 23 mm, the distance H1 is 7 mm, and the distance H2 is 4 mm.

  As shown in FIG. 21, the thread of the female screw 31 may be worn due to aging or the like, and the existing sealing screw 4 may be idled and cannot be fixed. In this case, since the instrument box 1 cannot be normally closed and sealed, it is necessary to replace the instrument box 1 in addition to the original work such as watt-hour meter replacement or investigation, and the power failure time. As a result, there are various problems such as ease of work and efficiency, and high installation costs. Therefore, in the third embodiment, the existing sealing screw 4 is discarded, but the base 3 and the cover 2 of the instrument box 1 are reused. As shown in FIGS. 22 and 24, the cover 2 and the base 3 are sandwiched between the instrument box repair tool main body 7 at the cover tightening portion 5 where the sealing screw 4 is idled and cannot be fixed.

  By rotating the head 41 with the sealing hole of the sealing screw 4E with a screwdriver or the like, as shown in FIGS. 23 and 25, the screw portion 43 of the sealing screw becomes the screw hole 74, the insertion hole 21 of the sealing screw, the female screw. 31, passes through the through-hole 75, and is inserted into the nut 8. And the arm part 73 with a screw hole bends toward the arm part 72 with a through-hole by being pushed by the head 41 with the seal hole of the sealing screw 4E. As a result, the cover 2 and the base 3 are fixed in a state where the arm portion 72 with through hole is in contact with the base 3 and the arm portion 73 with screw hole is in contact with the cover 2.

  As a result, even if the female screw 31 of the sealing screw part cannot be used by opening the cover 2, the cover 2 can be fixed to the base 3 by reusing the base 3 and the cover 2 of the existing instrument box 1. it can. As a result, the replacement work of the base 3 and the cover 2 of the existing instrument box 1 can be omitted, and the work efficiency is improved. And the cost of the instrument box 1 is reduced.

(Embodiment 4)
FIG. 26 is a cross-sectional view illustrating a procedure for attaching the instrument box repair tool according to the fourth embodiment. FIG. 27 is a cross-sectional view illustrating a mounting state of the instrument box repair tool according to the fourth embodiment. FIG. 27 is a cross-sectional view illustrating a mounting state of the instrument box repair tool according to the fourth embodiment. FIG. 28 is an explanatory diagram for explaining a sealing screw of the instrument box repair tool according to the fourth embodiment. FIG. 29 is a plan view illustrating a procedure for attaching the instrument box repair tool body according to the fourth embodiment. FIG. 30 is a plan view illustrating an attachment state of the instrument box repair tool according to the fourth embodiment. In addition, the same code | symbol is attached | subjected to the same member and component as what was mentioned above, and the overlapping description is abbreviate | omitted.

  Also in the fourth embodiment, in the cover tightening portion 5, the sealing screw 4 continuously penetrating the base 3 and the cover 2 described in the first embodiment and the tightening device including the female screw 31 of the sealing screw portion in the base 3 are defective. The repair method of the instrument box 1 will be described.

  As shown in FIGS. 26 and 27, the instrument box repair tool according to the fourth embodiment is arranged in the direction in which the base 3 and the cover 2 are combined at the cover tightening portion 5 of the instrument box 1 in a state where the base 3 and the cover 2 are combined. A U-shaped instrument box repair tool main body 7 circumscribing, a sealing screw 4F, and a nut 8 are provided.

  In the fourth embodiment, even if the sealing screw 4 is broken and there is a tip side 4B of the sealing screw that is a part of the sealing screw 4 in the state of remaining in the female screw 31 of the sealing screw portion of the base 3, The base 3 and the cover 2 of the existing instrument box 1 can be reused by the box repair tool main body 7, the sealing screw 4F, and the nut 8.

  As shown in FIG. 28, the sealing screw 4F includes a head 41 with a sealing hole, a large diameter screw portion 45, and a shaft portion 46. In the fourth embodiment, a male screw is cut on the outer periphery of the large-diameter screw portion 45. As an example of the dimensions of the sealing screw 4F, the diameter D7 of the head 41 with the sealing hole is φ10 mm, the diameter D12 of the large-diameter screw portion 45 is φ8 mm, and the diameter D13 of the shaft portion 46 is φ4 mm. Further, the length L6 of the head 41 with the sealing hole is 6 mm, the length L8 of the large diameter screw portion 45 is 6 mm, and the length L7 of the shaft portion 46 is 10 mm. The head 41 with the sealing hole has a groove into which a screwdriver is inserted, and the groove width d1 is 1.2 mm.

  The diameter D12 of the large-diameter screw portion 45 of the sealing screw 4F is larger than the inner diameter D3 (see FIG. 26) of the insertion hole 21 of the sealing screw. The diameter D13 of the shaft portion 46 is equal to or smaller than the inner diameter D3 (see FIG. 26) of the insertion hole 21 of the sealing screw.

  As shown in FIG. 26, depending on the operation of opening the cover 2 of the instrument box 1, the sealing screw 4 is broken, and the tip side 4 </ b> B of the sealing screw 4 remains in the female screw 31 of the base 3. There is. Next, as shown in FIG. 26, the cover 2 and the base 3 are sandwiched by the instrument box repair tool main body 7 at the cover tightening portion 5. For example, the distance H1 is 5 mm, and the distance H2 is 4 mm.

  As shown in FIGS. 26 and 29, a nut 8 is provided that is screwed to the large-diameter screw portion 45 of the sealing screw 4F of the instrument box repair tool at a position in contact with the outside of the arm portion 73 with the screw hole. For example, the nut 8 is fixed to the outside of the arm portion 73 with a screw hole by welding.

  As shown in FIGS. 27 and 30, the large-diameter screw portion 45 of the sealing screw 4F is turned into the female screw 81 of the nut 8 and the arm with the screw hole by rotating the head 41 with the sealing hole of the sealing screw 4F with a screwdriver or the like. The screw hole 74 of the portion 73 is screwed. The length L8 of the large-diameter screw portion 45 is longer than the thickness of the nut 8, and the length that allows the large-diameter screw portion 45 to be exposed from the screw hole-equipped arm portion 73 and contact the cover 2 is necessary. Accordingly, the cover 2 can be pressed in a state where the sealing screw 4F is completely screwed. In this case, the tip of the shaft portion 46 of the sealing screw 4F is inserted into the insertion hole 21 of the sealing screw. The distance L1 shown in FIG. 27 is 23 mm, for example.

  The length L7 of the shaft portion 46 of the sealing screw 4F shown in FIG. 28 is shorter than the distance L1 between the arm portion 72 with through hole and the arm portion 73 with screw hole shown in FIG. The length L7 of the shaft portion 46 of the sealing screw 4F is such a distance that the shaft portion 46 and the shaft portion 42 of the sealing screw 4F do not come into contact with each other, and as shown in FIG. 27, the shaft portion 46 of the sealing screw 4F. There is a gap Q between the shaft portion 42 and the shaft portion 42. More preferably, the length L7 of the shaft portion 46 of the sealing screw 4F does not exceed the thickness of the cover 2 at the cover tightening portion 5. The shaft portion 42 of the sealing screw is appropriately cut with pliers or the like when the remaining broken length is long. Then, by rotating the head 41 with the sealing hole of the sealing screw 4F with a screwdriver or the like, the arm portion 73 with the screw hole is pushed by the nut 8, and the arm portion 73 with the screw hole is bent toward the arm portion 72 with the through hole. In addition, the large-diameter screw portion 45 of the sealing screw 4F directly tightens the cover 2. As a result, the large-diameter screw portion 45 and the screw-holed arm portion 73 are fixed with the cover 2 and the base 3 interposed therebetween. The cover tightening portion 5 of the fourth embodiment can increase the force with which the cover 2 and the base 3 are sandwiched, compared to the cover tightening portion 5 of the second embodiment.

  As described above, the instrument box repair tool according to the fourth embodiment can directly press the cover 2 with the sealing screw 4F including the large-diameter screw portion 45 having a larger diameter than the insertion hole of the sealing screw.

  A through hole 75 is formed in the arm portion 72 with a through hole. A screw hole 74 is formed in the arm portion 73 with a screw hole. A female screw is cut in the screw hole 74. The screw hole 74 has an inner diameter larger than the inner diameter of the insertion hole 21 of the sealing screw.

  At the cover tightening portion 5, the base 3 and the cover 2 are sandwiched by the instrument box repair tool body 7, and the shaft portion 46 of the seal screw 4F for the instrument box repair tool according to the fourth embodiment is inserted into the insertion hole 21 of the seal screw. Is inserted. When the sealing screw 4F is screwed into the screw hole 74 of the instrument box repair tool body 7, the seal screw 4F for the instrument box repair tool can tighten the cover 2 in the tightening direction.

  The instrument box repair tool main body 7 includes a bent portion 76 in which the tip end of the arm portion 73 with the screw hole is bent at an angle of about 45 ° in the direction opposite to the clamping direction. Here, the clamping direction is a direction in which the arm portion 72 with through hole and the arm portion 73 with screw hole clamp the cover fastening portion 5, and the arm portion with through hole 72 and the arm portion 73 with screw hole approach each other. Direction. By providing the bent portion 76, the instrument box repair tool body 7 can easily hold the base 3 and the cover 2 at the cover tightening portion 5. The bent portion 76 may be in the arm portion 72 with through hole, or may be in both the arm portion 72 with through hole and the arm portion 73 with screw hole.

1 Instrument box 2 Cover 3 Base 4 Sealing screw 4A Sealing screw head side (divided body)
4B End of sealing screw (divided body)
4C Sealing screw 4D Sealing screw 4E Sealing screw 4F Sealing screw 5 Cover tightening point 6 Sealing screw tip cap 7 Instrument box repair tool body 8 Nut 9 Space formed between cover and base 10 Sealing hole 21 Sealing screw difference Insertion hole 31 Female screw 41 of sealing screw part Head part 42 with sealing hole Screw shaft part 43 Sealing screw thread part 44 Sealing screw thread part of instrument box repair tool 61 Projection part 62 Flange part 63 Concave part 71 Connection part 72 Arm part with through hole 73 Arm part with screw hole 74 Screw hole 75 Through hole

Claims (5)

An instrument box that accommodates an instrument in a space formed by combining a base and a cover, and includes a sealing screw that continuously penetrates the base and the cover, and a tightening that includes a female screw of a sealing screw portion in the base In the instrument box repair tool for repairing the instrument box when the device is defective,
An arm portion with a through hole provided for abutting the base, a screw hole facing the arm portion with the through hole and for inserting the sealing screw, and having a screw hole for contacting the cover An instrument box repair tool main body comprising an arm part, and a connecting part that connects the arm part with through hole and the arm part with screw hole;
A large-diameter screw portion that is larger in diameter than the insertion hole of the sealing screw of the cover and that is screwed into the screw hole, and the large-diameter screw that is inserted into the insertion hole of the sealing screw A sealing screw for an instrument box repair tool comprising a shaft portion provided at one end of the portion and a head with a sealing hole provided at the other end of the large-diameter screw portion;
An instrument box repair tool characterized by comprising: An instrument box that accommodates an instrument in a space formed by combining a base and a cover, and includes a sealing screw that continuously penetrates the base and the cover, and a tightening that includes a female screw of a sealing screw portion in the base In the instrument box repair tool for repairing the instrument box when the device is defective,
An arm portion with a through hole provided for abutting the base, a screw hole facing the arm portion with the through hole and for inserting the sealing screw, and having a screw hole for contacting the cover An instrument box repair tool main body comprising an arm part, and a connecting part that connects the arm part with through hole and the arm part with screw hole;
A sealing screw for an instrument box repair tool comprising a screw portion to be inserted into the screw hole, and a head with a sealing hole provided at the other end of the screw portion;
A flange portion that is attached to the screw portion of the sealing screw and has an outer shape larger than the insertion hole of the sealing screw of the cover, and a protrusion that protrudes from the flange portion and can be inserted into the insertion hole of the sealing screw An instrument box repair tool comprising: a sealing screw tip cap having a portion. An instrument box that accommodates an instrument in a space formed by combining a base and a cover, and includes a sealing screw that continuously penetrates the base and the cover, and a tightening that includes a female screw of a sealing screw portion in the base In the instrument box repair tool for repairing the instrument box when the device is defective,
An arm portion with a through hole provided for abutting the base, a screw hole facing the arm portion with the through hole and for inserting the sealing screw, and having a screw hole for contacting the cover An instrument box repair tool main body comprising an arm part, and a connecting part that connects the arm part with through hole and the arm part with screw hole;
An instrument box comprising a screw portion that is shorter than the length of the arm portion with through hole and the arm portion with screw hole, and that is inserted into the screw hole, and a head with a sealing hole provided at the other end of the screw portion. Sealing screw for repair tool,
An instrument box repair tool characterized by comprising: An instrument box that accommodates an instrument in a space formed by combining a base and a cover, and includes a sealing screw that continuously penetrates the base and the cover, and a tightening that includes a female screw of a sealing screw portion in the base In the instrument box repair tool for repairing the instrument box when the device is defective,
An arm portion with a through hole provided for abutting the base, a screw hole facing the arm portion with the through hole and for inserting the sealing screw, and having a screw hole for contacting the cover An instrument box repair tool main body comprising an arm part, and a connecting part that connects the arm part with through hole and the arm part with screw hole;
Provided at the other end of the screw portion, a head portion with a sealing hole provided at the other end of the arm portion with the through hole, a screw tightening portion of the cover of the instrument box, and a screw hole for inserting the sealing screw An instrument box repair tool comprising a sealing screw for an instrument box repair tool.   The arm portion with through hole and the arm portion with screw hole are bent in the opposite direction to the clamping direction for clamping the cover tightening portion at the tip of one end of the arm portion with through hole or the arm portion with screw hole. The instrument box repair tool according to any one of claims 1 to 4, further comprising a bent portion.

Images