JP6805545B2 - Instrument box repair tool - Google Patents

Description

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

Conventionally, there has been an instrument box used to protect an watt hour meter used outdoors from rain dew and impact. The watt hour meter is housed in a space formed in the base (main body) and the cover. The instrument box is made of synthetic resin, for example, with the base and cover combined, for example, the sealing screw loosely penetrated at the lower end of the cover is screwed into the female screw of the sealing screw portion provided at the lower end of the base. It is fixed to the lower end of the instrument box by screwing it into the female screw hole. In the instrument box that houses the watt-hour meter, for example, the sealing line is loosened in the sealing through hole provided in the base and the cover, respectively, and the sealing through hole that penetrates the head of the sealing screw in the radial direction. By crimping both ends of the sealing wire with a sealing tool while passing it through so that it does not pass through, the watt hour meter is prevented from being used illegally.

Japanese Patent No. 5415470

However, the instrument box of a watt-hour meter used outdoors is exposed to ultraviolet rays and wind and rain. For this reason, when the cover of the instrument box is opened for replacement or investigation of the watt-hour meter, the sealing screw and the female screw of the sealing screw are stuck due to aging deterioration such as rust. There were many cases. Therefore, when the sealing screw is rotated in the loosening direction, the head of the sealing screw and the screwed portion of the sealing screw portion with the female screw are often damaged.

Further, when the instrument box base has a female screw hole made of synthetic resin, the screw thread made of resin may be worn due to aged deterioration or the like, and the sealing screw may slip and cannot 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 Since it is not possible to close and seal normally, it is necessary to replace the instrument box in addition to the original work such as replacement of the power meter and investigation, resulting in power outage time and work time. Time is required, and various problems such as ease and efficiency of work and high installation cost are occurring.

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

Further, in the above-mentioned conventional technique, even if the sealing screw is carefully loosened on the assumption that the screwed portion of the sealing screw or the female screw is rusted and becomes brittle when the cover is opened, the sealing is performed. In many cases, the screw breaks, and if the sealing screw is damaged, it cannot be sealed again.

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. The purpose is.

In order to solve the above-mentioned problems and achieve the purpose, the instrument box repair tool is an instrument box for accommodating an instrument in a space formed by combining a base and a cover, and the base and the cover are continuously connected. In the instrument box repair tool for repairing the instrument box when the tightening device having the sealing screw penetrating through and the female screw of the sealing screw portion on the base is defective, a through hole is provided and the penetration for contacting the base. and apertured arm portion, the opposed to the through hole with the arm portion, or normal with a di-hole, and the screw hole with the arm portions to abut on the cover, the screw holes with arm and the through-hole with the arm portion An instrument box repair tool main body including a connecting portion for connecting the portions, and a large-diameter screw portion having a diameter larger than that of the sealing screw insertion hole of the cover and screwing into the screw hole. An instrument box repair tool having a shaft portion provided at one end of the large-diameter screw portion for inserting into the insertion hole of the sealing screw and a head having a sealing hole provided at the other end of the large-diameter screw portion. sealed example Bei and screws, the use, between the base and the cover and the length of the cover fastening position when mated to the fastest and the through-hole with the arm portion and the screw hole with the arm portion Equal to the distance .

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

In order to solve the above-mentioned problems and achieve the purpose, the instrument box repair tool is an instrument box for accommodating an instrument in a space formed by combining a base and a cover, and the base and the cover are continuously connected. In the instrument box repair tool for repairing the instrument box when the tightening device having the sealing screw penetrating through and the female screw of the sealing screw portion on the base is defective, a through hole is provided and the penetration for contacting the base. and apertured arm portion, the opposed to the through hole with the arm portion, or normal with a di-hole, and the screw hole with the arm portions to abut on the cover, the screw holes with arm and the through-hole with the arm portion For an instrument box repair tool main body including a connecting portion for connecting the portions, 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. And a flange portion that is attached to the threaded portion of the sealing screw and has an outer shape larger than the insertion hole of the sealing screw of the cover, and an insertion hole of the sealing screw that protrudes from the flange portion. e Bei a sealing screw tip cap, a having a protrusion which can be inserted into the base and than the length of the cover fastening portion when said cover becomes mated with the shortest, the through hole with the arm portion The distance between the screw hole and the arm portion with a screw hole is large .

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

In order to solve the above-mentioned problems and achieve the purpose, the instrument box repair tool is an instrument box for accommodating an instrument in a space formed by combining a base and a cover, and the base and the cover are continuously connected. In the instrument box repair tool for repairing the instrument box when the tightening device having the sealing screw penetrating through and the female screw of the sealing screw portion on the base is defective, a through hole is provided and the penetration for contacting the base. and apertured arm portion, the opposed to the through hole with the arm portion, or normal with a di-hole, and the screw hole with the arm portions to abut on the cover, the screw holes with arm and the through-hole with the arm portion An instrument box repair tool main body including a connecting portion for connecting the portions, a screw portion that is shorter than the distance between the arm portion with a through hole and the arm portion with a screw hole, and a screw portion that is inserted into the screw hole. and sealing screws meter box repair device and a sealing perforated head provided at the other end of the threaded portion, Bei example a cover fastening position when said base and said cover becomes mated with the shortest Is equal to the distance between the arm with through holes and the arm with screw holes .

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

In order to solve the above-mentioned problems and achieve the purpose, the instrument box repair tool is an instrument box for accommodating an instrument in a space formed by combining a base and a cover, and the base and the cover are continuously connected. In the instrument box repair tool for repairing the instrument box when the tightening device provided with the sealing screw and the female screw of the sealing screw portion on the base is defective, the instrument box repair tool is provided with a through hole and penetrates to abut the cover. and apertured arm portion, the opposed to the through hole with the arm portion, or normal with a di-hole, and the screw hole with the arm portions to abut on the base, the screw holes with arm and the through-hole with the arm portion An instrument box repair tool main body including a connecting portion for connecting the portions, a nut arranged outside the arm portion with a screw hole, an arm portion with a through hole, a cover tightening portion of the instrument box, and a front portion. through the punch di hole comprises a threaded portion screwed into the nut, the shaft portion which the screw portion is provided at one end, provided at the other end of the shaft portion and a head with sealing holes e Bei and sealing screws meter box repair tool, and the base and the cover length fastening portion of the cover and is mated with the time of the fastest and the through-hole with the arm portion and the screw hole with the arm portion Is equal to the distance between .

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

In a preferred embodiment, meter box repair tool is the a tip of one end of the through hole with the arm portion or the threaded hole with the arm portion, the through hole with the arm portion and the arm portion threaded hole and said cover fastening portion It is provided with a bent portion that is bent in the direction opposite to the sandwiching direction.

This structure makes it easier for the instrument box repair tool body to hold the base and cover at the tightening point of the cover.

According to the present invention, even if the instrument box cannot be normally closed and sealed due to damage to the sealing screw of the instrument box or wear of the female screw of the sealing screw portion, the instrument box repair tool can be used. The base and cover of the existing instrument box can be reused to successfully close and seal the instrument box. Then, it is possible to reduce the number of defective replacements of the instrument box due to the replacement or investigation of the watt-hour meter, suppress power outages and work, and improve the ease of work and the efficiency of equipment cost.

FIG. 1 is a schematic cross-sectional view of the instrument box. FIG. 2 is a combination diagram schematically showing the front surface 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 a tightening portion of the instrument box in a state where the sealing screw of the instrument box is damaged or a resin screw 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 main body according to the first embodiment. FIG. 8 is an explanatory diagram for explaining the sealing screw of the instrument box repair tool according to the first embodiment. FIG. 9 is a schematic view showing an attachment procedure of the instrument box repair tool according to the first embodiment. FIG. 10 is a schematic view showing an attached state of the instrument box repair tool according to the first embodiment. FIG. 11 is a schematic view showing an attached state of the instrument box repair tool according to the second embodiment. FIG. 12 is an explanatory diagram for explaining the sealing screw of the instrument box repair tool according to the second embodiment. FIG. 13 is a plan view schematically showing the mounting procedure of the instrument box repair tool main body according to the second embodiment. FIG. 14 is a plan view schematically showing a state in which the instrument box repair tool according to the second embodiment is sealed by passing a sealing line through the sealing screw and the sealing hole. FIG. 15 is a cross-sectional view schematically showing a tightening portion of the instrument box in a state where the sealing screw of the instrument box is damaged. FIG. 16 is a cross-sectional view schematically showing an attachment procedure of the instrument box repair tool according to the second embodiment. FIG. 17 is a cross-sectional view schematically showing a state in which the instrument box repair tool according to the second embodiment is sealed by passing a sealing line through the sealing screw and the sealing hole. FIG. 18 is a schematic view showing an attached state of the instrument box repair tool according to the third embodiment. FIG. 19 is an explanatory view of a sealing screw of the instrument box repair tool according to the third embodiment. FIG. 20 is an explanatory diagram for explaining the sealing screw of the instrument box repair tool according to the third embodiment. FIG. 21 is a cross-sectional view showing a tightening portion of the instrument box in a state where the resin screw thread of the instrument box is worn. FIG. 22 is a cross-sectional view showing a procedure for attaching the instrument box repair tool according to the third embodiment. FIG. 23 is a cross-sectional view showing an attached state of the instrument box repair tool according to the third embodiment. FIG. 24 is a plan view showing a procedure for attaching the instrument box repair tool main body according to the third embodiment. FIG. 25 is a plan view showing an attached state of the instrument box repair tool according to the third embodiment. FIG. 26 is a cross-sectional view showing a procedure for attaching the instrument box repair tool according to the fourth embodiment. FIG. 27 is a cross-sectional view showing an attached state of the instrument box repair tool according to the fourth embodiment. FIG. 28 is an explanatory diagram for explaining the sealing screw of the instrument box repair tool according to the fourth embodiment. FIG. 29 is a plan view showing an attachment procedure of the instrument box repair tool main body according to the fourth embodiment. FIG. 30 is a plan view showing an attached 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 to the embodiments for carrying out the following inventions (hereinafter referred to as embodiments). In addition, the components in the following embodiments include those that can be easily assumed by those skilled in the art, those that are substantially the same, that is, those in a so-called equal range. Further, the components disclosed in the following embodiments can be appropriately combined.

(Embodiment 1)
FIG. 1 is a schematic cross-sectional view of the instrument box. FIG. 2 is a combination diagram schematically showing the front surface 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 in which a screw break occurs when the cover is opened in the cover and base fixing mechanism. FIG. 4 is a plan view showing a tightening portion of the instrument box in a state where the sealing screw of the instrument box is damaged or a resin screw thread is worn. As shown in FIGS. 1 and 2, the instrument box 1 has a cover 2, a base 3, and a cover tightening point 5.

The instrument box 1 is used to protect the watt-hour meter used outdoors from rain dew, impact, and the like. An instrument such as a watt-hour meter is housed in the space 9 formed between the cover 2 and the base 3. As shown in FIG. 2, a sealing hole 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 a seal provided in the cover tightening portion 5 are provided. A sealing line, which will be described later, is inserted into the insertion hole 21 of the screw 4 (see FIG. 4) and the sealing through hole (hereinafter referred to as the sealing hole) 49 on the head of the sealing screw 4. With this sealing line passed through, the sealing line is crimped with a sealing tool described later. The sealing wire suppresses the loosening of the sealing screw 4 of the instrument box, and the sealing screw 4 cannot be loosened unless the sealing line is cut, so that 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 thread is cut on the outer circumference of the threaded portion 43. As an example of the dimensions of the sealing screw 4, the diameter D7 of the head 41 with a sealing hole is φ6 mm, the diameter D8 of the shaft portion 42 is φ3 mm, and the diameter D6 of the screw portion 43 is φ4 mm. Further, the length L6 of the head 41 with a 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 a 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, at 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, a female screw 31 of a sealing screw portion is also provided on the base 3. When the cover 2 is closed with respect to the base 3, the insertion hole 21 of the sealing screw and the female screw 31 of the sealing screw portion overlap, and the insertion hole 21 of the sealing screw and the female screw 31 of the sealing screw portion communicate with each other. To do. Since the female screw 31 has a female screw, the screw portion 43 of the sealing screw 4 is screwed with the female screw 31, and the cover tightening point 5 fixes the cover 2 to the base 3 and as described above. To seal. 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 cover 2 of the instrument box 1 can be opened for the purpose of replacing or inspecting 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 years or 10 years. Further, since the instrument box 1 is outside, it is exposed to ultraviolet rays, wind and rain. As a result, depending on the environment in which the cover is placed, the sealing screw 4 at the cover tightening point 5 may be rusted or corroded, and the sealing screw 4 at the cover tightening point 5 may be deteriorated. Depending on the work 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 tip side 4B of the sealing screw 4 remains on the female screw 31 of the base 3. It may be in a state of being. Such a state can be said to be a case where the tightening device provided with the female screw 31 of the sealing screw portion on the base 3 is defective.

For example, if the sealing screw 4 at the cover tightening point 5 is in a deteriorated state, or if the fastening between the screw portion 43 of the sealing screw 4 and the female screw 31 cannot be released due to rust, forcibly rotating the sealing screw 4 causes the sealing screw. 4 may be threaded, and as shown in FIG. 3, a broken portion BK may be formed on the shaft portion 42, which may be the head side 4A of the sealing screw 4 and the tip side 4B of the sealing screw 4.

The tip end side 4B of the sealing screw often remains on the female screw 31 of the sealing screw portion of the base 3. Conventionally, when the tip 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 replaced sealing screw 4, the cover 2 and the base 3 are replaced. Was abandoned.

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 main body according to the first embodiment. FIG. 8 is an explanatory diagram for explaining the sealing screw of the instrument box repair tool according to the first embodiment. FIG. 9 is a schematic view showing an attachment procedure of the instrument box repair tool according to the first embodiment. FIG. 10 is a schematic view showing an attached 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 sealing screw 4C of the instrument box repair tool shown in FIG. , Fixed to the base 3.

FIG. 6A is a top view of the tip cap 6 of the sealing screw 4C. FIG. 6B is a side view of FIG. 6A. FIG. 6C is a bottom view of the tip cap 6 of the sealing screw 4C, and is a plan view seen from the opposite side of FIG. 6A. As shown in FIGS. 6 (a) and 6 (b), the tip 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 recess 63 in which a female thread 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 72 with a through hole and the arm portion 73 with a screw hole face each other in a plane, and the arm portion 72 with a through hole and the arm portion 73 with a screw hole are substantially perpendicular to the connecting portion 71. The metal plate is bent so as to be. In the first embodiment, the arm portion 72 with a through hole and the arm portion 73 with a screw hole face each other, and the connecting portion 71 connects the arm portion 72 with a through hole and the arm portion 73 with a screw hole to form a U shape as a whole. It has a shape. The instrument box repair tool main 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.

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

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

In the first embodiment, as shown in FIG. 9, the screw portion 44 of the sealing screw 4C 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 penetrates the arm portion 73 with a screw hole is screwed into the recess 63 (see FIG. 6) of the tip cap 6 of the sealing screw 4C. In this state, the tip 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 a 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 in a state where the flange portion 62 is in contact with the cover 2.

As shown in FIG. 10, since the arm portion 73 with a screw hole receives a reaction force due to the flange portion 62 coming into contact with the cover 2 rather than the arm portion 72 with a through hole, the thickness W1 of the arm portion 73 with a screw hole is set. , The thickness of the arm portion 72 with a through hole is made larger than the thickness W2. As a result, the posture in which the flange portion 62 is in contact with the cover 2 is stabilized. 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 a cover 2 and a base 3 for accommodating an instrument formed in a 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 remains in the female screw 31 of the sealing screw portion of the base 3, the instrument box repair tool main body 7, the sealing screw 4C, and the sealing screw 4C, The tip cap 6 of the sealing screw 4C makes it possible to reuse the base 3 and the cover 2 of the existing instrument box 1. The instrument box repair tool main body 7 has a through-hole arm portion 72 having a through-hole 75 into which the tip side 4B of the sealing screw, which is a part of the first bolt, is inserted, and a screw that faces the through-hole arm portion 72. An arm portion 73 with a screw hole having a hole 74 and a connecting portion 71 for connecting the arm portion 72 with a through hole and the arm portion 73 with a screw hole are provided. The sealing screw 4C includes a screw portion 44 penetrating the screw hole 74 and a head 41 with a sealing hole provided at one end of the screw portion 44. The tip cap 6 of the sealing screw 4C is attached to the other end of the screw portion 44, and has a flange portion 62 having an outer shape larger than the insertion hole 21 of the sealing screw, and a flange portion 62 protruding from the flange portion 62 and an insertion hole for the sealing screw. It has a protrusion 61 that can be inserted into 21. With these configurations, the protrusion 61 of the tip cap 6 of the sealing screw 4C is inserted into the insertion hole 21 of the sealing screw, and the cover 2 and the base 3 are fixed in a state where the flange portion 62 is in contact with the cover 2. Has been done. As a result, the distance L2 between the arm portion 72 with a through hole and the arm portion 73 with a screw hole is regulated by the connecting portion 71, and the cover tightening portion is formed between the flange portion 62 and the arm portion 72 with a through hole. The cover 2 and the base 3 in 5 are sandwiched.

As a result, 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 can be reused to fix the cover 2 to the base 3. 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. Then, the cost of the instrument box 1 is reduced.

(Embodiment 2)
FIG. 11 is a schematic view showing an attached state of the instrument box repair tool according to the second embodiment. FIG. 12 is an explanatory diagram for explaining the sealing screw of the instrument box repair tool according to the second embodiment. FIG. 13 is a plan view schematically showing the mounting procedure of the instrument box repair tool main body according to the second embodiment. FIG. 14 is a plan view schematically showing a state in which the instrument box repair tool according to the second embodiment is sealed by passing a sealing line through the sealing screw and the sealing hole. FIG. 15 is a cross-sectional view schematically showing a tightening portion of the instrument box in a state where the sealing screw of the instrument box is damaged. FIG. 16 is a cross-sectional view schematically showing an attachment procedure of the instrument box repair tool according to the second embodiment. FIG. 17 is a cross-sectional view schematically showing a state in which the instrument box repair tool according to the second embodiment is sealed by passing a sealing line through the sealing screw and the sealing hole. The same members and components as those described above are designated by the same reference numerals, and duplicate description will be 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, and the arm portion 72 with a through hole. The distance at which the arm portion 73 with a 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 there is a sealing screw 4B that is a part of the sealing screw 4 in a state where the sealing screw 4 is broken and remains in the female screw 31 of the sealing screw portion of the base 3, the instrument box repair tool main body 7 With the sealing screw 4D and the nut 8, the base 3 and the cover 2 of the existing instrument box 1 can be reused.

As shown in FIG. 12, the sealing screw 4D includes a head 41 with a sealing hole and a screw portion 44. In the second embodiment, a male thread is cut on the outer circumference of the threaded portion 44. As an example of the dimensions of the sealing screw 4D, the diameter D7 of the head 41 with a 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 a sealing hole is 6 mm, and the length L5A of the screw portion 44 is 15 mm. The head 41 with a 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 work of opening the cover 2 of the instrument box 1, the sealing screw 4 is broken and the tip side 4B of the sealing screw 4 remains on 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 between the instrument box repair tool main body 7 at the cover tightening portion 5.

In the second embodiment, the nut 8 is 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 a 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 a sealing hole of the sealing screw 4D with a screwdriver or the like, the screw portion 44 of the sealing screw 4D is screwed with the female screw 81 of the nut 8, and the nut 8 The tip of the screw portion 44 of the sealing screw 4D exposed from the above is inserted into the screw hole 74 of the arm portion 73 with a screw hole.

As shown in FIG. 11, the screw portion 44 of the sealing screw 4D 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 that the screw portion 44 of the sealing screw 4D and the shaft portion 42 do not come into contact with each other. As shown in FIG. 11, the sealing screw 4D There is a gap Q between the screw portion 44 and the shaft portion 42. If the shaft portion 42 of the sealing screw is broken and the remaining length is long, it is appropriately cut with pliers or the like. Then, the arm portion 73 with a screw hole bends toward the arm portion 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 a through hole is in contact with the base 3 and the arm portion 73 with a screw hole is in contact with the cover 2. The cover tightening portion 5 of the first embodiment can strengthen the force for sandwiching the cover 2 and the base 3 as compared with 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. As a result, the arm portion 73 with a screw hole easily bends toward the arm portion 72 with a through hole. 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, a sealing hole 10 (see FIG. 14) provided on 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. A sealing line 88 is inserted into and a sealing hole 49 for sealing. With the sealing wire 88 passed through, the sealing wire 89 is crimped with the sealing tool 89. The sealing wire 88 suppresses the loosening of the sealing screw 4D of the instrument box 1, and the sealing screw 4D cannot be loosened unless the sealing wire 88 is cut, so that the instrument box 1 is sealed. As a result, it can be determined from the state of the sealing wire 88 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.

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 can be reused to fix the cover 2 to the base 3. Can be done. 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. Then, the cost of the instrument box 1 is reduced.

(Embodiment 3)
FIG. 18 is a schematic view showing an attached state of the instrument box repair tool according to the third embodiment. FIG. 19 is an explanatory view of a sealing screw of the instrument box repair tool according to the third embodiment. FIG. 20 is an explanatory diagram for explaining the sealing screw of the instrument box repair tool according to the third embodiment. FIG. 21 is a cross-sectional view showing a tightening portion of the instrument box in a state where the resin screw thread of the instrument box is worn. FIG. 22 is a cross-sectional view showing a procedure for attaching the instrument box repair tool according to the third embodiment. FIG. 23 is a cross-sectional view showing an attached state of the instrument box repair tool according to the third embodiment. FIG. 24 is a plan view showing a procedure for attaching the instrument box repair tool main body according to the third embodiment. FIG. 25 is a plan view showing an attached state of the instrument box repair tool according to the third embodiment. The same members and components as those described above are designated by the same reference numerals, and duplicate description will be omitted.

In the third embodiment, when the base 3 of the instrument box 1 has a hole for the female screw 31 made of synthetic resin, the thread of the female screw 31 is worn due to aged deterioration or the like, and the sealing screw 4 slips and cannot be fixed. In some cases. Such a state can be said to be a case where the tightening device provided with the female screw 31 of the sealing screw portion on the base 3 is defective.

A screw portion 43 of the sealing screw 4E shown in FIG. 19, a head 41 with a sealing hole of the sealing screw provided at the other end, and a shaft portion 42 are provided. As shown in FIG. 20, as an example of the dimensions of the sealing screw 4E, the diameter D7 of the head 41 with a sealing hole is φ6 mm, the diameter D8 of the shaft portion 42 is φ3 mm, and the diameter D6 of the screw portion 43 is φ4 mm. is there. Further, the length L6 of the head 41 with a 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 a sealing hole has a groove into which a screwdriver is inserted, and the groove width d1 is 1.2 mm. As described above, in the sealing screw 4E, the shaft portion 42 of the sealing screw 4E is about 5 mm longer than the shaft portion 42 (see FIG. 5) of the existing sealing screw 4.

Further, 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 inserted. It protrudes from the base 3. In the third embodiment, in the instrument box 1, the nut 8 screwed with the screw portion 43 of the sealing screw 4E is welded to the screw hole arm portion 73 at a position in contact with the outside of 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, and the arm portion 72 with a through hole. The distance from the arm portion 73 with a screw hole 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 a screw hole. 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 aged deterioration or the like, and the existing sealing screw 4 may slip and become unable to be fixed. In this case, since the instrument box 1 cannot be normally closed and sealed, the instrument box 1 must be replaced in addition to the original work such as replacement of the watt-hour meter and investigation, and the power failure time. And work time is generated and the work time is lengthened, which causes various problems such as ease and efficiency of work and high installation cost. 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 slips and cannot be fixed.

By rotating the head 41 with a 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 has a through hole 75 , a sealing screw insertion hole 21, and a female screw. It passes through the screw hole 74 and is inserted into the nut 8. Then, it is pushed by the head 41 with a sealing hole of the sealing screw 4E, and the arm portion 73 with a screw hole bends toward the arm portion 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 a through hole is in contact with the base 3 and the arm portion 73 with a screw hole is in contact with the cover 2.

As a result, even if the female screw 31 of the sealing screw portion cannot be used by opening the cover 2, the existing instrument box 1 base 3 and cover 2 can be reused to fix the cover 2 to the base 3. 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. Then, the cost of the instrument box 1 is reduced.

(Embodiment 4)
FIG. 26 is a cross-sectional view showing a procedure for attaching the instrument box repair tool according to the fourth embodiment. FIG. 27 is a cross-sectional view showing an attached state of the instrument box repair tool according to the fourth embodiment. FIG. 27 is a cross-sectional view showing an attached state of the instrument box repair tool according to the fourth embodiment. FIG. 28 is an explanatory diagram for explaining the sealing screw of the instrument box repair tool according to the fourth embodiment. FIG. 29 is a plan view showing an attachment procedure of the instrument box repair tool main body according to the fourth embodiment. FIG. 30 is a plan view showing an attached state of the instrument box repair tool according to the fourth embodiment. The same members and components as those described above are designated by the same reference numerals, and duplicate description will be omitted.

Also in the fourth embodiment, at the cover tightening portion 5, the tightening device provided with the sealing screw 4 that continuously penetrates the base 3 and the cover 2 described in the first embodiment and the female screw 31 of the sealing screw portion on the base 3 is defective. The repair method of the instrument box 1 in the case will be described.

As shown in FIGS. 26 and 27, the instrument box repair tool according to the fourth embodiment is in the direction of combining the base 3 and the cover 2 at the cover tightening point 5 of the instrument box 1 in a state where the base 3 and the cover 2 are combined. It is provided with a U-shaped instrument box repair tool main body 7 that is externally attached, a sealing screw 4F, and a nut 8.

In the fourth embodiment, even if there is a sealing screw tip side 4B which is a part of the sealing screw 4 in a state where the sealing screw 4 is broken and remains in the female screw 31 of the sealing screw portion of the base 3, the instrument is used. The box repair tool main body 7, the sealing screw 4F, and the nut 8 make it possible to reuse the base 3 and the cover 2 of the existing instrument box 1.

As shown in FIG. 28, the sealing screw 4F includes a head portion 41 with a sealing hole, a large-diameter screw portion 45, and a shaft portion 46. In the fourth embodiment, a male thread is cut on the outer circumference of the large diameter threaded portion 45. As an example of the dimensions of the sealing screw 4F, the diameter D7 of the head 41 with a 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 a 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 a 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 work of opening the cover 2 of the instrument box 1, the sealing screw 4 is broken and the tip side 4B of the sealing screw 4 remains on 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 between 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 screwed with a large-diameter screw portion 45 of the sealing screw 4F of the instrument box repair tool is provided at a position in contact with the outside of the arm portion 73 with a 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, by rotating the head 41 with a sealing hole of the sealing screw 4F with a screwdriver or the like, the large-diameter screw portion 45 of the sealing screw 4F becomes the female screw 81 of the nut 8 and the arm with a screw hole. It is screwed into the screw hole 74 of the portion 73. The length L8 of the large-diameter screw portion 45 is longer than the thickness of the nut 8, and it is necessary that the large-diameter screw portion 45 is exposed from the arm portion 73 with a screw hole and comes into contact with the cover 2. As a result, the cover 2 can be pressed in a state where the sealing screw 4F is completely screwed. Further, 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, for example, 23 mm.

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 a through hole shown in FIG. 27 and the arm portion 73 with a screw hole. The length L7 of the shaft portion 46 of the sealing screw 4F is such that the shaft portion 46 of the sealing screw 4F does not come into contact with the shaft portion 42. As shown in FIG. 27, the shaft portion 46 of the sealing screw 4F A gap Q is formed between the shaft portion 42 and the shaft portion 42. It is more preferable that 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. If the shaft portion 42 of the sealing screw is broken and the remaining length is long, it is appropriately cut with pliers or the like. Then, by rotating the head 41 with a sealing hole of the sealing screw 4F with a screwdriver or the like, the arm portion 73 with a screw hole is pushed by the nut 8, and the arm portion 73 with a screw hole bends toward the arm portion 72 with a through hole. At the same time, 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 arm portion 73 with screw holes sandwich the cover 2 and the base 3 and are fixed. The cover tightening portion 5 of the fourth embodiment can strengthen the force for sandwiching the cover 2 and the base 3 as compared with the cover tightening portion 5 of the second embodiment.

As described above, in the instrument box repair tool according to the fourth embodiment, the cover 2 can be directly pressed by the sealing screw 4F provided with the large diameter screw portion 45 having a diameter larger 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 sealing screw insertion hole 21.

At the cover tightening point 5, the base 3 and the cover 2 are sandwiched between the instrument box repair tool main body 7, and the shaft portion 46 of the sealing screw 4F for the instrument box repair tool according to the fourth embodiment is inserted into the sealing screw insertion hole 21. Is inserted. By screwing the sealing screw 4F into the screw hole 74 of the instrument box repair tool main body 7, the sealing 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 of the arm portion 73 with a screw hole is bent at an angle of about 45 ° in the direction opposite to the holding direction by about 2 mm. Here, the pinching direction is the direction in which the arm portion 72 with a through hole and the arm portion 73 with a screw hole sandwich the cover tightening portion 5, and the arm portion 72 with a through hole and the arm portion 73 with a screw hole approach each other. The direction. By providing the bent portion 76, the instrument box repair tool main body 7 can easily hold the base 3 and the cover 2 at the cover tightening portion 5. The bent portion 76 may be located in the arm portion 72 with a through hole, or may be located in both the arm portion 72 with a through hole and the arm portion 73 with a screw hole.

1 Instrument box 2 Cover 3 Base 4 Sealing screw 4A Head side of sealing screw (split body)
4B Sealing screw tip side (split 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 Difference between sealing screws Insertion hole 31 Female screw of sealing screw 41 Head with sealing hole 42 Shaft of sealing screw 43 Threaded part of sealing screw 44 Threaded part of sealing screw of instrument box repair tool 61 Protruding part 62 Flange part 63 Recessing part 71 Connecting part 72 Arm part with through hole 73 Arm part with screw hole 74 Screw hole 75 Through hole

Claims (5)

A tightening instrument box that houses an instrument in a space formed by combining a base and a cover, and is provided with a sealing screw that continuously penetrates the base and the cover, and a female screw of the sealing screw portion on the base. In the instrument box repair tool that repairs the instrument box when the device is defective,
A through hole, the through hole with the arm portions to abut on said base, said opposed to the through hole with the arm portion, or includes a normally di holes, threaded holes with the arm portions to abut on the cover , An instrument box repair tool main body including a connecting portion for connecting the arm portion with a through hole and the arm portion with a screw hole.
A large-diameter screw portion having a diameter larger than the insertion hole of the sealing screw of the cover and for screwing into the screw hole, and the large-diameter screw for inserting into the insertion hole of the sealing screw. A sealing screw for an instrument box repair tool having a shaft portion provided at one end of the portion and a head having a sealing hole provided at the other end of the large-diameter screw portion.
Bei to give a,
An instrument characterized in that the length of the cover tightening portion when the base and the cover are fitted to each other and become the shortest is equal to the distance between the arm portion with a through hole and the arm portion with a screw hole. Box repair tool. A tightening instrument box that houses an instrument in a space formed by combining a base and a cover, and is provided with a sealing screw that continuously penetrates the base and the cover, and a female screw of the sealing screw portion on the base. In the instrument box repair tool that repairs the instrument box when the device is defective,
A through hole, the through hole with the arm portions to abut on said base, said opposed to the through hole with the arm portion, or includes a normally di holes, threaded holes with the arm portions to abut on the cover , An instrument box repair tool main body including a connecting portion for connecting the arm portion with a through hole and the arm portion with a screw hole.
A sealing screw for an instrument box repair tool having 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 threaded 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. Bei example and parts, and sealed screw tip cap with a, a,
An instrument characterized in that the distance between the arm portion with a through hole and the arm portion with a screw hole is larger than the length of the cover tightening portion when the base and the cover are fitted to each other and become the shortest. Box repair tool. A tightening instrument box that houses an instrument in a space formed by combining a base and a cover, and is provided with a sealing screw that continuously penetrates the base and the cover, and a female screw of the sealing screw portion on the base. In the instrument box repair tool that repairs the instrument box when the device is defective,
A through hole, the through hole with the arm portions to abut on said base, said opposed to the through hole with the arm portion, or includes a normally di holes, threaded holes with the arm portions to abut on the cover , An instrument box repair tool main body including a connecting portion for connecting the arm portion with a through hole and the arm portion with a screw hole.
It is shorter than the distance between the arm portion with a through hole and the arm portion with a screw hole, and includes 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. Sealing screws for instrument box repair tools,
Bei to give a,
An instrument characterized in that the length of the cover tightening portion when the base and the cover are fitted to each other and become the shortest is equal to the distance between the arm portion with a through hole and the arm portion with a screw hole. Box repair tool. A tightening instrument box that houses an instrument in a space formed by combining a base and a cover, and is provided with a sealing screw that continuously penetrates the base and the cover, and a female screw of the sealing screw portion on the base. In the instrument box repair tool that repairs the instrument box when the device is defective,
A through-hole, and an arm portion with the through hole for contact with the cover, and the opposite to the through hole with the arm portion, or normal with a di-holes, threaded holes with the arm portions to abut on the base , An instrument box repair tool main body including a connecting portion for connecting the arm portion with a through hole and the arm portion with a screw hole.
A nut placed on the outside of the arm with screw holes and
And the through hole with the arm portion, and the cover fastening portion of the meter box, before penetrating the punch di hole, a threaded portion which is screwed into the nut, the shaft portion which the screw portion is provided at one end, provided at the other end of the shaft portion, Bei example a seal screw for the meter box repair instrument comprising a head with sealing holes, and,
An instrument characterized in that the length of the cover tightening portion when the base and the cover are fitted to each other and become the shortest is equal to the distance between the arm portion with a through hole and the arm portion with a screw hole. Box repair tool. Wherein the tip of one end of the through hole with the arm portion or the threaded hole with the arm portion, the through hole with the arm portion and said threaded hole with the arm portion is bent in clamping direction opposite the direction of sandwiching the cover fastening portion The instrument box repair tool according to any one of claims 1 to 4, wherein the instrument box repair tool is provided with a bent portion.

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