WO2020158700A1

WO2020158700A1 - Nut member tightening method and tightening tool

Info

Publication number: WO2020158700A1
Application number: PCT/JP2020/002886
Authority: WO
Inventors: 朋之野村
Original assignee: 株式会社大里
Priority date: 2019-01-29
Filing date: 2020-01-28
Publication date: 2020-08-06
Also published as: JPWO2020158700A1

Abstract

Provided are a tightening method and tightening tool that facilitate the work of tightening a nut member even in places where there is no space for turning a wrench or spanner.　A nut member 7 is formed as a geared nut member that has a nut-side gear 11 formed on the circumference thereof. A washer 5, in which an engagement-receiving hole 21 is formed in a protruding part 17, and a tightening tool 9, which is provided with a rod-like section with an engaging protrusion 31 at the tip and an operation-side gear 29 that is provided near the tip of the rod-like section and that meshes with the nut-side gear 11, are prepared. After lightly tightening the nut member 7 on a mounting section 1 by hand, by operating an operation-receiving part 25B of the tightening tool 9 to turn the tightening tool 9 while the engaging protrusion 31 of the tightening tool 9 is fitted into the engagement-receiving hole 21 and the operation-side gear 29 is meshed with the nut-side gear 11, the geared nut member is firmly tightened.

Description

Nut member tightening method and tightening tool

The present invention relates to a tightening method and a tightening tool for a nut member having an inner peripheral portion with a female screw that is screwed into a male screw formed on the outer periphery of a mounted portion arranged in a place where there is no space for rotating a wrench or a spanner. It is about.

　There is a need to tighten the nut member on the mounted part that is located in a place where there is no space to rotate the wrench or spanner. For example, FIG. 16(A) is a diagram showing a conventional mounting work of a water faucet metal fitting. As shown in FIG. 16(A), in the faucet fitting, the packing (3), the washer (5), and the hexagon nut (7) are passed through the piping portion in this order, and the hexagon nut (7) is attached to the attached portion (1). It has been fixed using. Since the hexagon nut fixing the faucet is arranged in the space sandwiched between the sink and the wall, a long dedicated tool JG called a faucet tightening tool as shown in FIG. 16(B). Is used to perform the tightening work (Non-Patent Document 1 and Non-Patent Document 2).

In the space sandwiched between the sink and the wall, even if the dedicated tool shown in Non-Patent Documents 1 and 2 is used, there is not enough space for rotating the dedicated tool. Therefore, the dedicated tool is fitted to the nut member. It is necessary to perform the tightening work by repeating the operations of once removing the special tool after rotating it by a small angle, fitting the special tool to the nut member, and rotating it by a small angle. Further, even when the nut member is rotated using the dedicated tool, the dedicated tool hits the surrounding wall portion, so even if the dedicated tool is used, the work of tightening the hexagon nut takes time and effort.

Also, since the faucet that has been installed for a long time may have rust, it may not be easy to remove the hexagon nut even if you use a special tool.

Moreover, in the case of faucet construction, the worker needs to put the head under the sink and perform it on his back, and there has been a demand for a method of facilitating the tightening and removing work of the nut member.

An object of the present invention is to provide a tightening method and a tightening tool that facilitate the tightening work of a nut member even in a place where there is no space around which a wrench or spanner is rotated.

The present invention relates to a method for tightening a nut member having an inner peripheral portion with a female screw that is screwed into a male screw formed on the outer periphery of a mounted portion arranged at a place where there is no space for rotating a wrench or a spanner around it. is there.

In the present invention, the nut member is a nut member with a gear in which a nut-side gear is formed on the outer peripheral portion, and in a state where the nut member is fastened to the attached portion, the nut member is fitted to a place located radially outside of the nut member. A fitting recess, a fitting hole, or a fitting projection is provided. And, a rod-shaped member having a fitting concave portion or a fitting convex portion that rotatably fits a fitting hole at the tip portion, or a fitting concave portion that rotatably fits the fitting convex portion A portion to be operated by an operator when the rod-shaped portion is rotated around an imaginary center extending in the longitudinal direction at the rear end of the rod-shaped portion, and provided in the vicinity of the tip of the rod-shaped portion. And the operation-side gear that meshes with the nut-side gear when the fitting recess or the fitting hole and the fitting projection are fitted, or the fitting projection and the fitting recess are fitted. Prepare a tightening tool equipped with.

After that, after loosely tightening the nut member with gear to the mounted part manually, the fitting convex part or the fitting concave part of the tightening tool becomes the fitting concave part or the fitting hole part or the fitting convex part. By operating the operated portion of the tightening tool and rotating the tightening tool in a state of being fitted and meshed with the operating-side gear and the nut-side gear, the nut member with gear is tightly tightened.

By doing so, the tool does not rotate together with the nut member, so it is possible to tighten the nut member only by rotating the tightening tool without repeatedly fitting and removing the tool. become.

The fitted recess, fitted hole, or fitted protrusion may be provided in any manner. For example, it may be provided on a washer that is fitted to the attached portion before the nut member with gear. In this case, the washer is provided with a protruding piece that protrudes outward in the radial direction of the geared nut member when the geared nut member is tightened, and the protruding piece has a recess for fitting or a hole for fitting. Alternatively, a fitted convex portion may be formed. Alternatively, the member to which the attached portion is attached may be integrally provided with the fitted concave portion, the fitted hole portion, or the fitted convex portion.

The tightening tool may be composed of a bit having a rod-shaped portion and a gear on the operating side, and a tool main body having an operated portion to which the bit can be attached. For the tool body, for example, a commercially available driver is assumed, but the tool body is not limited to this. In this way, the tightening tool can be easily prepared by preparing only the bit.

When the tightening tool is made up of a bit and a tool body, the bit includes a light portion provided at the tip of the rod-shaped portion and a lighting drive circuit having a switch mechanism for turning on the light portion. When the bit is attached to the main body, the switch mechanism may be turned on, the lighting drive circuit may operate, and the light part may be turned on. By doing so, even in a dark place such as a space sandwiched between the sink and the wall, the work can be performed while irradiating with the light unit, and thus the work is facilitated.

The plurality of teeth of the nut-side gear and the plurality of teeth of the operation-side gear may be provided with a taper at the tip portions where they start to mesh with each other, the height dimension of which decreases toward the tip. With this configuration, when the fitting convex portion or the fitting concave portion of the tightening tool is fitted into the fitted concave portion, the fitted hole portion, or the fitted convex portion, the tightening tool is guided by the taper, and the operating side The gear and the nut-side gear can be easily meshed with each other.

The outer periphery of the nut member with gear may have a portion having a hexagonal nut-shaped contour at the rear portion of the plurality of teeth of the nut-side gear. If such a nut member is used, when there is no tightening tool, it is possible to perform the tightening work using the conventional faucet tightening tool.

The present invention relates to a rod-shaped portion having a fitting convex portion or a fitting concave portion at a tip portion and a rod-shaped portion provided at a rear end of the rod-shaped portion for rotating the rod-shaped portion around an imaginary center extending in the longitudinal direction. It can also be regarded as a tightening tool including an operated portion operated by a person and an operating-side gear provided near the tip of the rod-shaped portion. In this case, the plurality of teeth of the operating-side gear may be provided with a taper at the tip end portion whose height dimension decreases toward the tip end. With this configuration, the taper serves as a guide, and the gears can be smoothly meshed with each other.

The method for tightening a nut member of the present invention is such that a nut-side gear is formed on the outer periphery of the nut member, and a non-gear portion having a smaller maximum diameter dimension than the maximum outer diameter dimension of the nut-side gear is integrally formed behind the nut-side gear. A nut member with a gear, provided with a rod-shaped portion, and an operated object operated by an operator when the rod-shaped portion is detachably provided at the rear end of the rod-shaped portion and is rotated around an imaginary center extending in the longitudinal direction. Portion, a tightening tool provided near the tip of the rod-shaped portion, and an operating-side gear that meshes with the nut-side gear, a hole for a tool through which the rod-shaped portion located behind the operating-side gear passes, and a gear Prepare a tool fixing jig having a hole for the attached part that allows the non-gear part of the nut member with gear to pass through after loosely tightening the nut member to the attached part, and manually attach the nut member with the gear to the attached part After tightening loosely, the rod-shaped part from which the operated part has been removed is inserted into the tool hole, and the operating side gear is attached so that it meshes with the nut side gear. Position the tool fixing jig by fitting the gear part and the non-gear part, and in this state, attach the operated part to the rod-shaped part of the tightening tool, and then operate the operated part to rotate the tightening tool. Alternatively, the geared nut member may be tightly tightened.

The method for tightening a nut member according to the present invention is a nut member with a gear in which a nut-side gear is formed on the outer peripheral portion of the nut member, and a pair of linear portions including an operation-side gear that meshes with the nut-side gear, and the pair of straight lines. Of a tightening tool provided with a connecting part that connects at least one end of the part, and after manually loosely tightening the geared nut member to the mounted part, an operation provided on one of the pair of straight parts of the tightening tool The nut-side gear may be tightly tightened by sliding the tightening tool while the side-gear is meshed with the nut-side gear.

It is a side view which shows the sink SK attached to the wall WL and the one-hole type faucet metal fitting WF combined with the sink SK. It is the (A) perspective view of the nut member 7, the (B) top view, and the (C) CC sectional view taken on the line. It is (A) perspective view of washer 5, (B) top view, and (C) CC sectional view taken on the line. It is the (A) perspective view of the bit 23, the (B) top view, the (C) CC sectional view taken on the line, the (D) front view, and the (E) bottom view. (A) And (B) is a partially expanded view which shows a mode that the nut member 7 is tightened using the tightening tool 9. As shown in FIG. (A) And (B) is a figure which shows the modification of the bit 23 which comprises the tightening tool 9, (C) is a figure which shows the modification of a nut member, and the process of tightening work. (A) And (B) is a figure which shows the modification of the tightening tool 9. As shown in FIG. It is a figure which shows the modification of the washer 5. (A) And (B) is a figure showing the modification of nut member 7. (A) And (B) is a figure which shows the modification of a fitting part. (A) And (B) is a figure which shows the modification of a fitting part. It is a figure which shows the tool fixing jig used for the tightening method of the nut member of 2nd Embodiment. (A) And (B) is a figure which shows the fastening method of the nut member of 2nd Embodiment. It is a figure which shows the fastening tool used for the fastening method of the nut member of 3rd Embodiment. It is a figure which shows the tightening method of the nut member of 3rd Embodiment. (A) is a figure which shows the attachment work of the conventional faucet metal fitting, (B) is a figure which shows the conventional faucet fastening tool.

Embodiments of a nut member tightening method and a tightening tool of the present invention will be described in detail below with reference to the drawings.

<First Embodiment>
FIG. 1 is a side view showing a sink SK attached to a wall WL and a one-hole type faucet metal fitting WF combined with the sink SK. The nut member tightening method of the present invention is applied to the water faucet metal fitting WF. It is a figure used in order to demonstrate the example applied.

The faucet metal fitting WF is composed of a spout portion SP and a pipe portion PP. A part of the pipe portion PP is the attached portion 1, and a male screw is formed on the outer circumference. A through hole H for attaching the water faucet metal fitting WF is formed in the connecting portion CN between the sink SK and the wall WL. After inserting the pipe part PP of the faucet metal fitting WF from the upper part of the through hole H, the packing 3, the washer (washer) 5, and the nut member 7 are attached to the pipe part PP extending from the through hole H from the back side of the connection part CN. Then, the nut member 7 is loosely tightened to the mounted portion 1 and then the tightening tool 9 is tightly tightened to fix the water faucet metal fitting WF. The tightening method according to the present invention is used for tightening the nut member.

[Nut member with gear]
2A is a perspective view of the nut member 7, FIG. 2B is a plan view, and FIG. 2C is a sectional view taken along the line CC. The nut member 7 is a nut member with a gear, and a nut-side gear 11 having 30 teeth is formed on the outer peripheral portion. Further, on the inner peripheral portion, a female screw 13 that is screwed into a male screw formed on the outer periphery of the mounted portion 1 is formed.

[Washer]
3A is a perspective view of the washer 5, FIG. 3B is a plan view, and FIG. 3C is a sectional view taken along the line CC. The washer 5 includes a washer body portion 15 and a protruding piece portion 17 that protrudes outward in the radial direction of the nut member 7 when the nut member 7 is tightened. The washer body 15 is formed with a through hole 19 which is fitted through the pipe portion PP into the mounted portion 1. The protruding piece portion 17 is fitted with a fitting hole portion 21 into which the tightening tool 9 is fitted. Are formed.

[Tightening tool]
The tightening tool 9 is composed of a bit 23 and a tool body 25. 4A to 4E are views of the bit 23, where FIG. 4A is a perspective view, FIG. 4B is a plan view, FIG. 4C is a sectional view taken along line CC, and FIG. , The gear portion is omitted for the sake of convenience), and (E) is a bottom view. The bit 23 includes a bit-side rod-shaped portion 27 and an operation-side gear 29 provided near the tip of the bit-side rod-shaped portion 27 and having 18 teeth. A fitting convex portion 31 that rotatably fits into the fitted hole portion 21 is provided at the tip of the bit-side rod-shaped portion 27. An opening 33 is formed on the opposite side of the tip end of the bit-side bar 27, and a bottomed hole 35 is formed inside. A locking portion 37 of the tool body 25 is formed on the wall of the hole 35. The tool main body 25 is a commercially available driver, and includes a tool-side rod-shaped portion 25A and an operated portion 25B operated by an operator. The tightening tool 9 is configured by inserting the tool body 25 from the opening 33 of the bit 23 and engaging the tool body 25 with the engaging portion 37. In this embodiment, the bit-side rod-shaped portion 27 of the bit 23 and the tool-side rod-shaped portion 25A are combined to form a rod-shaped portion as a whole. The tightening tool 9 performs a tightening operation by rotating the rod-shaped portions (the bit-side rod-shaped portion 27 and the tool-side rod-shaped portion 25A) about a virtual center IC extending in the longitudinal direction.

[Tightening work]
5A and 5B are partially enlarged views showing a part of the step of tightening the nut member 7 using the tightening tool 9, and FIG. 5A is a front view (however, the gear part is omitted for convenience). And (B) are sectional views taken along line BB. As described above, first, after inserting the pipe portion PP of the faucet metal fitting WF from the upper portion of the through hole H, the packing 3 and the washer 5 are attached to the pipe portion PP extending from the through hole H from the back side of the connecting portion CN. Then, the nut member 7 is passed through the nut member 7 in this order, and the nut member 7 is loosely manually tightened on the mounted portion 1. Further, the tightening tool 9 is manufactured by combining the bit 23 and the tool body 25. In this state, the fitting convex portion 31 of the tightening tool 9 is fitted into the fitted hole portion 21, and at the same time, the operation side gear 29 and the nut side gear 11 are meshed (see FIGS. 5A and 5B). Status). Then, the operated portion 25B of the tightening tool 9 is operated to rotate the tightening tool 9 about the virtual center IC. In the present embodiment, the nut member 7 is tightened by turning it clockwise, so that the tightening tool 9 is turned counterclockwise to tighten the nut member 7. Since the tightening tool 9 rotates while fitted in the fitted hole portion 21, it is possible to easily work even in a narrow space between the sink SK and the wall WL. As a result of the inventor's test, in the case of a water faucet fitting WF to which a hexagonal nut having an opposite angle of 38 mm is suitable, the maximum diameter D1 of the nut side gear 11 of the nut member 7 is 48 mm and the maximum diameter D2 of the operation side gear 29 is 30 mm. , The center pitch D3 between gears is 36 mm, the outer diameter D4 of the nut-side gear 11 and the operating-side gear 29 is 75 mm, and the distance M from the wall WL to the mounted portion 1 (see FIG. 1) can be up to 40 mm. there were.

When removing the nut member 7, set the tightening tool 9 in the same manner as above, and rotate the tightening tool 9 clockwise.

[Modification 1]
6(A) and 6(B) are views showing a modified example of the bit 23 that constitutes the tightening tool 9 (however, in FIG. 6B, the gear portion is omitted for convenience). In this example, the plurality of teeth of the operating-side gear 29 of the bit 23 are provided with a taper at the tip end portion whose height dimension decreases toward the tip end. Similarly, as shown in FIG. 6C, the nut-side gear 11 of the nut member 7 is also provided with a taper whose height dimension decreases toward the tip end portion where it starts to mesh with the operation-side gear 29. There is. By doing so, the tightening tool 9 is guided when the fitting convex portion 31 of the tightening tool 9 is fitted into the fitted hole portion 21, and the operation-side gear 29 and the nut-side gear 11 are easily meshed with each other. be able to.

[Modification 2]
7A and 7B are views showing a modification of the tightening tool 9. In this example, as shown in FIG. 7A, the bit 23 includes a lighting drive circuit 23b including a light section 23a provided at the tip of the bit-side rod-shaped section 27 and a switch mechanism for turning on the light section 23a. It has and. When the bit 23 is attached to the tool body 25, the switch mechanism is turned on, the lighting drive circuit 23b operates, and the light 23a lights up. By doing so, even in a dark place such as a space sandwiched between the sink SK and the wall WL, it is possible to work while irradiating with the light portion 23a, so that the work is facilitated.

[Modification 3]
FIG. 8 is a diagram showing a modified example of the washer 5. In this example, a part of the protruding piece portion 17 has an opening portion 17a that opens toward the opposite side of the washer body portion 15, and has a C shape. Therefore, it has a shape in which a part of the fitted hole portion 21 is opened. With this configuration, when the fitting protrusion 31 of the tightening tool 9 is fitted into the fitted hole 21, the fitting protrusion 31 can be fitted from the opening 17a side.

[Modification 4]
9A and 9B are views showing a modified example of the nut member 7. FIG. 9A is a perspective view from above of the modification, and FIG. 9B is a perspective view from below of the modification. In this example, on the outer peripheral portion of the geared nut member 7, there is a portion (hexagonal nut portion 11a) whose contour is a hexagonal nut shape at the rear portion of the plurality of teeth of the nut-side gear 11. If such a nut member is used, when the tightening tool 9 does not exist, it is possible to perform the tightening work using the conventional faucet tightening tool.

[Modification 5]
10(A) and 10(B) are diagrams showing modified examples of the fitting portion. In the example of FIG. 10(A), the fitting recessed portion 21 is integrally provided in the connecting portion CN to which the mounting portion 1 is attached. Further, instead of the fitting convex portion 31 of the bit 23 constituting the tightening tool 9 being longer than that of the first embodiment, the bit side rod-shaped portion 27 is shorter. As shown in FIG. 10B, the fitting convex portion 31 is inserted into the fitted concave portion 21, and at the same time, the operation side gear 29 and the nut side gear 11 are meshed with each other.

[Modification 6]
11A and 11B are views showing a modification of the fitting portion. In the example of FIG. 11A, the fitting recess 31 is provided at the tip of the bit 23 that constitutes the tightening tool 9, and the fitting projection 21 is provided on the protruding piece 17 of the washer 5. .. As shown in FIG. 11B, the fitting concave portion 31 of the tightening tool 9 is fitted into the fitted convex portion 21, and at the same time, the operation side gear 29 and the nut side gear 11 are meshed with each other.

<Second Embodiment>
12 and 13(A) and 13(B) show a method of tightening the nut member according to the second embodiment. The same parts as those of the first embodiment are denoted by the reference numerals of FIGS. 1 to 5 plus 100, and the description thereof will be omitted.

In the present embodiment, the nut member 107 integrally includes, behind the nut-side gear 111, a non-gear portion 112 having a smaller maximum outer diameter than the maximum outer diameter of the nut-side gear 111.

Also, in the present embodiment, a tool fixing jig 139 shown in FIG. 12 is prepared instead of the washer. The tool fixing jig 139 includes a tool hole portion 141 through which the bit side rod-shaped portion 127 located behind the operation side gear 129 and the non-gear portion of the nut member 107 after loosely tightening the nut member 7 to the attached portion 101. And a hole 143 for an attached portion through which 112 is passed.

In this example, after inserting the piping portion PP of the faucet metal fitting WF from the upper portion of the through hole H, the packing 103 and the nut member 107 are provided in this order from the back side of the connecting portion CN to the piping portion PP extending from the through hole H. Then, the nut member 107 is loosely tightened by hand on the mounted portion 101. After that, in the hole 143 for attachment of the tool fixing jig 139 in which the bit side rod-shaped portion 127 of the bit 123 is inserted into the tool hole 141 of the tool fixing jig 139 (FIG. 13A), the operation side gear 129 The tool-fixing jig 143 is positioned by fitting the attached portion 101 and the non-gear portion 112 so as to mesh with the nut side gear 111 (FIG. 13(B)). In this state, after the bit 123 and the tool body 125 are combined to form the tightening tool 109, the operated portion 125B is operated to rotate the tightening tool 109, thereby tightening the nut member 107 tightly.

<Third Embodiment>
14 and 15 are views showing a method for tightening the nut member according to the third embodiment. The same parts as those of the first embodiment are denoted by the reference numerals of FIGS. 1 to 5 plus 200, and the description thereof will be omitted.

In this example, the tightening tool 209 shown in FIG. 14 is prepared (the nut member 207 is also shown in FIG. 14 for easy understanding). The tightening tool 209 includes a pair of

linear portions

209A and 209A including an operating-side gear 229 that meshes with the nut-side gear 211, and connecting

portions

209B and 209B that connect the pair of

linear portions

209A and 209A. Further, the connecting portion 209B is formed with

flat portions

209C and 209C forming a grip portion.

As shown in FIG. 15, after the nut member 207 is manually loosely tightened to the mounted portion, the operation side gear 229 provided on one of the pair of straight portions of the tightening tool is meshed with the nut side gear 211. The nut-side gear 211 is tightly tightened by gripping the

flat portions

209C and 209C of the tightening tool 209 with both hands and sliding the tightening tool 209. For sliding, the operator may slide by hand, but for example, the flat portion 209C may be hit with a hammer or the like.

The above embodiment is described as an example, and the present invention is not limited to this embodiment without departing from the gist thereof. For example, in the above example, the method and the tool for mounting the faucet metal fitting are shown as examples, but it goes without saying that they may be used for mounting other articles.

According to the present invention, it is possible to provide a tightening method and a tightening tool in which the nut member can be easily tightened even in a place where there is no space for rotating the wrench or the spanner.

1 Attached part 3 Packing 5 Washer (washer)
7 Nut Member 9 Tightening Tool 11 Nut Gear 13 Female Screw 15 Washer Main Body 17 Projecting Piece 19 Through Hole 21 Fitted Hole 23 Bit 25 Tool Main Body 25A Tool Side Rod 25B Operated Part 27 Bit Side Rod 29 Operation Side gear 31 Fitting convex portion 33 Opening portion 35 Hole portion 37 Locking portion WL Wall SK Sink CN Connecting portion WF Water faucet metal fitting SP Water spout portion PP Piping portion

Claims

A method for tightening a nut member having an inner peripheral portion with a female screw that is screwed into a male screw formed on the outer periphery of a mounted portion arranged at a place where there is no space for rotating a wrench or spanner around,
A nut member with a gear in which a nut-side gear is formed on the outer peripheral portion of the nut member,
In a state in which the nut member is fastened to the mounted portion, a recessed portion for fitting, a hole for fitting, or a projected portion for fitting is provided at a position located outside in the radial direction of the nut member,
The tip has a fitting recess or a fitting projection that rotatably fits the fitting hole, or a fitting recess that rotatably fits the fitting projection. A rod-shaped portion, an operated portion which is provided at a rear end of the rod-shaped portion and which is operated by an operator when the rod-shaped portion is rotated around an imaginary center extending in the longitudinal direction, and the tip portion of the rod-shaped portion. Provided in the vicinity, with the fitting recess or the fitting hole and the fitting projection fitted together, or with the fitting projection and the fitting recess fitted together. Prepare a tightening tool equipped with the operation side gear that meshes with the nut side gear,
After loosely tightening the nut member with gears to the mounted portion by hand, the fitting convex portion or the fitting concave portion of the tightening tool is fitted into the fitted concave portion or the fitted hole portion or the fitted portion. The geared nut member is operated by operating the operated portion of the tightening tool to rotate the tightening tool in a state of being fitted to the fitting convex portion and meshing with the operation side gear and the nut side gear. A method for tightening a nut member, characterized by tightening tightly.
The fitted concave portion, the fitted hole portion, or the fitted convex portion is provided on a washer fitted to the fitted portion before the geared nut member. The method for tightening a nut member according to claim 1.
The washer includes a protruding piece portion that protrudes outward in the radial direction of the geared nut member when the geared nut member is tightened,
The nut member tightening method according to claim 2, wherein the fitting recess, the fitting hole, or the fitting projection is formed in the protruding piece.
The method for tightening a nut member according to claim 1, wherein the member to which the attached portion is attached is integrally provided with the fitted concave portion, the fitted hole portion, or the fitted convex portion.
The tightening tool is
A bit having the rod-shaped portion and the operating-side gear,
The method for tightening a nut member according to claim 1, comprising a tool main body having the operated portion and capable of mounting the bit.
The bits are
A light portion provided at the tip portion of the rod-shaped portion,
And a lighting drive circuit having a switch mechanism for lighting the light section,
The nut member tightening method according to claim 5, wherein when the bit is attached to the tool body, the switch mechanism is turned on, the lighting drive circuit is operated, and the light portion is turned on.
The nut member according to claim 1, wherein the plurality of teeth of the nut-side gear and the plurality of teeth of the operation-side gear are provided with a taper at a tip end portion where they start to mesh with each other, the height dimension of which decreases toward the tip end. How to tighten.
The method for tightening a nut member according to claim 1, wherein the outer peripheral portion of the nut member with gear has a portion having a hexagonal nut-shaped contour at a rear portion of a plurality of teeth of the nut-side gear.
A rod-shaped portion having a fitting convex portion or a fitting concave portion at its tip and a rod-shaped portion provided at the rear end of the rod-shaped portion, which is operated by an operator when rotating the rod-shaped portion around an imaginary center extending in the longitudinal direction. A tightening tool including an operated part and an operating-side gear provided near the tip of the rod-shaped part.
The tightening tool according to claim 9, wherein a plurality of teeth of the operation-side gear are provided with a taper at a tip portion whose height dimension decreases toward the tip.
A method for tightening a nut member having an inner peripheral portion with a female screw that is screwed into a male screw formed on the outer periphery of a mounted portion arranged at a place where there is no space for rotating a wrench or spanner around,
A nut member with a gear in which a nut-side gear is formed on the outer peripheral portion of the nut member, and a non-gear portion having a maximum outer diameter smaller than the maximum outer diameter of the nut-side gear is integrally provided behind the nut-side gear. ,
A rod-shaped portion, an operated portion that is detachably provided at the rear end of the rod-shaped portion, and is operated by an operator when the rod-shaped portion is rotated around an imaginary center extending in the longitudinal direction; A tightening tool that is provided in the vicinity of the tip and that includes an operating-side gear that meshes with the nut-side gear,
A tool hole through which the rod-shaped portion located behind the operation-side gear is inserted, and an attached portion through which the non-gear portion of the geared nut member is passed after the nut member with gear is loosely tightened to the attached portion. Prepare a jig for fixing a tool having a hole for use,
After loosely tightening the nut member with gears to the attached portion by hand, the rod-shaped portion from which the operated portion has been removed is inserted into the tool hole for attaching the tool fixing jig. In the hole portion, the attached portion and the non-gear portion are fitted so as to mesh the operation side gear with the nut side gear, and the tool fixing jig is positioned, and in this state, the tightening tool A method for tightening a nut member, comprising: mounting the operated part on a rod-shaped part, then operating the operated part to rotate the tightening tool to tighten the nut member with gears tightly.
A method of tightening a nut member having an inner peripheral portion with a female screw that is screwed into a male screw formed on the outer periphery of a mounted portion arranged at a place where there is no space for rotating a wrench or spanner around,
A nut member with a gear in which a nut-side gear is formed on the outer peripheral portion of the nut member,
Prepare a tightening tool that includes a pair of linear portions that include an operating-side gear that meshes with the nut-side gear, and a connecting portion that connects at least one end of the pair of linear portions,
After loosely tightening the nut member with gears to the attached portion by hand, the operation side gear provided on one of the pair of straight portions of the tightening tool is meshed with the nut side gear, and the tightening is performed. A method for tightening a nut member, wherein the gear on the nut side is tightly tightened by sliding a tool for use in the nut.