JPH07116965A - Nut fastening jig for water pipe - Google Patents

Abstract

PURPOSE:To provide a nut fastening jig for a water pipe by which the water pipe can be easily fastened without the peeling of a metallic plating film to protect the water pipe, and the water pipes can be mutually connected even in the case of an unbending water pipe, and moreover fastening work can be carried out even in a place being small or difficult to carry out the fastening work. CONSTITUTION:This is a jig 1a by which a nut A is threadedly engaged with a water pipe B and fastened, and the fastening jig 1a is composed of a columnar body 2a which is about elliptical and has required length and a handle bar. A slot 4 having an about hexagonal section is drilledly provided in the columnar body 2a in the direction of the generating line of the columnar body 2a, and a notched opening 5a which is extendingly provided from the slot 4 and smaller in a diameter than the slot 4 is provided at one end on the major axis side of the columnar body 2a, and a receiving groove 6a to receive the handle bar 3 is provided at an end opposite to the notched opening 5a of the columnar body 2a, and the handle bar 3 is oscillatably provided at the upper end of the receiving groove 6a through a hinge.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water pipe nut tightening jig, and an object thereof is to easily perform a tightening work without peeling off a metal plating film protecting a water pipe.
Moreover, even if the water pipes do not bend, the water pipes can be connected to each other, and the tightening work can be performed even in a narrow place or a place where the tightening work is difficult to perform. It is in the provision of ingredients.

[0002]

2. Description of the Related Art Conventionally, in order to connect two water pipes, a nut is tightened with a spanner to connect them. But,
As shown in FIG. 10, when the ends of the water pipes (B) and (B) for tightening the nuts (A) are located in the portions surrounded by the wall bodies (C) on all sides, this wall body (C) is an obstacle. It was difficult to tighten the nut (A) with a spanner (not shown). Also, when tightening the nut (A) with a spanner,
The spanner may come off from the nut (A), which may cause the spanner to hit the water pipes (B) and (B) and peel off the metal plating film that protects the water pipes (B) and (B). There was also a nature.

Therefore, the nut can be tightened even when the ends of the water pipes (B) and (B) for tightening the nut (A) are located in the portion surrounded by the wall body (C), and the tightening is performed. There is a technique disclosed in Japanese Utility Model Laid-Open No. 58-191963 as a jig that does not come off from the nut during attachment work. As shown in FIG. 11, this disclosed technique has a tool fitting portion (D) for fitting or engaging a rotating tool (not shown) at one end.
Alternatively, an engaging portion (not shown) is provided, a notch portion (E) is provided at the other end, and a fitting portion (G) to be fitted with the fastening metal fitting (F) is provided.
Relief part (H) communicating with the cutout part (E) in the central part
Was provided. As another jig, there is a technique disclosed in Japanese Utility Model Publication No. 1-138670. In this disclosed technique, as shown in FIG. 12, a fastening portion (K) that is integrally connected to an operating grip portion (I) and that can be fitted to a fastened member (J) is provided with the operating grip portion (I). It was formed in a long tubular shape by protruding in the thickness direction with respect to I).

[0004]

[Problems to be Solved by the Invention]
In the technique disclosed in Japanese Patent Laid-Open No. 191963, when performing a tightening operation, a fitting is fitted into a fitting portion, and piping provided in the fitting is attached to a side portion of a fastening jig. If the pipe is a water pipe that is made of metal or the like and does not bend because it is discharged to the outside from the relief part provided in the It was not possible to connect the tubes with a nut. Also,
In the technique disclosed in Japanese Utility Model Laid-Open No. 1-138670, when there are wall bodies in two directions or three directions as shown in FIG. 12, the fastening portion is fitted to the fastened member and the operating grip is provided. Although the member to be fastened can be fastened by arranging the portion in the direction without the wall body, a narrow space or a place where it is difficult to perform the tightening work, for example, water supply for fastening the fastened member (nut) as shown in FIG. It was not possible to perform the tightening work when the ends of the pipe were located on the four sides surrounded by walls.

In view of the above situation, therefore, the inventor of the present invention can easily perform the tightening work without peeling off the metal plating film for protecting the water pipe, and even if the water pipe does not bend, the water pipe cannot be bent. I have continued my earnest research on a nut tightening jig for water pipes that can be connected to each other and can perform tightening work even in narrow places or places where tightening work is difficult.

[0006]

That is, the present invention is a jig for screwing and tightening a nut on a water pipe, and the tightening jig is a substantially elliptical column body having a required length and a handle. A bar, and a long hole having a substantially hexagonal cross section is bored in the pillar toward the generatrix direction of the pillar, and one end of the pillar on the long axis side is extended from the long hole. A cutout opening having a diameter smaller than that of the long hole is provided, and a storage groove for storing a handle bar is provided at an end portion of the columnar body facing the cutout opening, and the handle bar is hinged at an upper end portion of the storage groove. A jig for tightening a nut for a water pipe and a jig for tightening a nut by screwing the nut into the water pipe, the tightening jig having a substantially elliptical shape. It is composed of a pillar of a required length and a handle bar, and is oriented toward the generatrix direction of the pillar at one end on the long axis side of the pillar. A cutout opening is provided, and at least one side of the upper and lower ends of the columnar body is provided with a recess having a substantially hexagonal cross section with a diameter larger than the diameter of the cutout opening, and at the end of the columnar body facing the notch opening. A storage groove for storing the handle bar is provided, and the handle bar is swingably provided at an upper end portion of the storage groove via a hinge, and a water pipe nut tightening jig and a water supply. It is a jig for screwing a nut into a pipe and tightening it, and this tightening jig consists of a columnar body of a required length that is substantially elliptical and a handle bar. A cutout opening is provided in the direction of the generatrix of the column body, and at least one side of the upper and lower ends of the column body is provided with nut engaging pieces of a required height upright at both ends on the minor axis side. There is a storage groove at the end facing the notch opening to store the handle bar. The handle bar is swingably provided on the upper end of the storage groove via a hinge, and a jig for tightening a nut for a water pipe, and a jig for screwing and tightening a nut on the water pipe. The fastening jig includes a nut engaging portion having a substantially U-shaped notch opening, and wing portions provided at both ends of the nut engaging portion and thicker than the nut engaging portion. The present invention relates to a water pipe nut tightening jig.

[0007]

Function: A long hole having a substantially hexagonal cross section is bored in the generatrix direction of a column having a required length which is substantially elliptical. Therefore, the tightening jig does not come off from the nut. That is, the fastening jig does not come into contact with the water pipe, the metal plating film protecting the water pipe is not peeled off, and the fastening work can be easily performed. The water pipes can be connected to each other, and the workability of tightening the nut can be improved. In addition, an elongated hole having a substantially hexagonal cross section is bored in the generatrix direction of a column body having a substantially oval shape and having a required length, and a handle bar is swingably provided in a storage groove provided in the column body. Therefore, the tightening work can be performed even in a narrow place or a place where it is difficult to perform the tightening work.

A notched opening is provided in a columnar body having a required length which is substantially oval in the direction of the generatrix of the columnar body, and a diameter larger than the diameter of the notched opening is provided on at least one of the upper and lower ends of the columnar body. A recess having a substantially hexagonal cross section is provided. Therefore, the tightening jig does not come off from the nut. That is, the fastening jig does not come into contact with the water pipe, the metal plating film protecting the water pipe is not peeled off, and the fastening work can be easily performed. The water pipes can be connected to each other, and the workability of tightening the bolts can be improved. In addition, a notched opening is provided in the columnar body of a required length that is substantially oval in the direction of the generatrix of the columnar body, and a recess having a substantially hexagonal cross section is provided at least on one side of the upper and lower ends of the columnar body. A handle bar is swingably provided in a storage groove provided on the long axis side of the column. Therefore, the tightening work can be performed even in a narrow place or a place where it is difficult to perform the tightening work.

A notched opening is provided in a columnar body of a required length which is substantially oval in the direction of the generatrix of the columnar body, and a required height is provided at both ends of the columnar body on at least one of the upper and lower ends of the columnar body. The nut engaging portion is installed upright. Therefore, the tightening jig does not come off from the nut. That is, the fastening jig does not come into contact with the water pipe, the metal plating film protecting the water pipe is not peeled off, and the fastening work can be easily performed. The water pipes can be connected to each other, and the workability of tightening the bolts can be improved. In addition, a notched opening is provided in the columnar body of a required length that is substantially oval in the direction of the generatrix of the columnar body, and at least one of the upper and lower ends of the columnar body has nut nuts at both ends on the minor axis side. A joint portion is provided upright, and a handle bar is swingably provided in a storage groove provided on the long axis side of the pillar. Therefore, the tightening work can be performed even in a narrow place or a place where it is difficult to perform the tightening work.

Wing portions thicker than the wall thickness of the nut engaging portion are provided at both ends of the nut engaging portion. Therefore, the tightening jig does not come off from the nut. That is, the fastening jig does not come into contact with the water pipe, the metal plating film protecting the water pipe is not peeled off, and the fastening work can be easily performed. The water pipes can be connected to each other, and the workability of tightening the bolts can be improved. Further, the tightening work can be performed even in a narrow place or a place where it is difficult to perform the tightening work.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a water pipe nut tightening jig according to the present invention will be described below with reference to the drawings. FIG. 1 is a schematic explanatory view showing a nut tightening jig for a water pipe according to an embodiment of the present invention, and FIG. 2 is a plan view showing another nut tightening jig for a water pipe according to an embodiment of the present invention. 3 is a front view showing the water pipe nut tightening jig shown in FIG. 2, FIG. 4 is a rear view showing the water pipe nut tightening jig shown in FIG. 2, and FIG. 5 is another view according to an embodiment of the present invention. 6 is a plan view showing the water pipe nut tightening jig, FIG. 6 is a front view showing the water pipe nut tightening jig shown in FIG. 5, and FIG. 7 is a rear view showing the water pipe nut tightening jig shown in FIG. 8 is a plan view showing another water pipe nut tightening jig according to an embodiment of the present invention, FIG. 9 is a front view showing the water pipe nut tightening jig shown in FIG. 8, and FIG. It is a perspective view for explaining a state.

(1a) is a jig for screwing a nut (A) onto a water pipe (B) (B) and tightening it. The tightening jig (1a) has a required length as shown in FIG. Sano pillar (2
a) and a handle bar (3). Column (2
The shape of a) is substantially elliptical, and this pillar (2a)
A long hole (4) having a substantially hexagonal cross section is formed in the column in the generatrix direction of the column (2a) so that the nut (A) is fitted therein. The diameter of the long hole (4) is arbitrary according to the diameter of the nut (A), but preferably has a slight clearance when the nut (A) is fitted. Is preferred. Further, a cutout opening (5a) extending from the elongated hole (4) and having a diameter smaller than the diameter of the elongated hole (4) is provided at one end of the columnar body (2a) on the major axis side. Column (2
An accommodation groove (6a) for accommodating a grip bar (3) described later is provided at an end of a) facing the notch opening (5a). The column body (2a) is entirely made of copper, malleable cast iron, or the like. The handle bar (3) is swingably provided at the upper end of the storage groove (6a) via a hinge (not shown). The handle bar (3) is entirely made of copper, malleable cast iron, or the like, like the pillar (2a).

The usage state of the tightening jig (1a) will be described. First, the nut (A) is screwed into the water pipes (B) and (B). After screwing the nut (A), the long hole (4) of the tightening jig (1a) is fitted, and the tightening jig (1a) is gripped by hand to rotate the nut (A). . At this time, the nut (A) is rotated while the handle bar (3) is housed in the housing groove (6a). Since this columnar body (2a) is formed in a substantially elliptical shape, it is easy to apply a force to the tightening jig (1a) and the rotational force can be increased. After rotating the nut (A) a required number of times, more specifically, after rotating the nut (A) to a state in which it cannot be gripped and rotated by hand, the nut (A) is stored in the storage groove (6a). Handle bar (3)
Is erected in a direction perpendicular to the generatrix of the column (2a), the handle bar (3) is gripped by hand, and the nut (A) is rotated and tightened.

As described above, since the elongated hole (4) having a substantially hexagonal cross section is bored toward the generatrix direction of the columnar body (2a) having a substantially elliptical length, the nut (A ), The tightening jig (1a) will not come off. Therefore, the tightening jig (1a) does not hit the water pipes (B) and (B), and the tightening work is facilitated without the metal plating film protecting the water pipes (B) and (B) peeling off. Even if it is a water pipe (B) (B) that can be performed and does not bend, the water pipe (B)
(B) can be connected to each other, and the workability of tightening the nut (A) can be improved. A storage groove (6a) provided in the column body (2a) by forming a long hole (4) having a substantially hexagonal cross section in the generatrix direction of the column body (2a) having a substantially oval shape and having a required length. Since the handle bar (3) is provided so as to be swingable, the tightening work can be performed even in a narrow place or a place where it is difficult to perform the tightening work (see FIG. 10).

Next, another water pipe nut tightening jig according to an embodiment of the present invention will be described with reference to FIGS. (1b) is a water pipe (B) (B) nut (A)
A jig for screwing and tightening the
b) is a columnar body (2) of a required length as shown in FIGS.
b) and a handle bar (3). Column (2
The shape of b) is substantially elliptical, and this pillar (2b)
A cutout opening (5b) is provided at one end of the major axis of the product in the direction of the generatrix. At least one side of the upper and lower ends of the pillar (2b) is provided with recesses (7) and (7) having a substantially hexagonal cross section for fitting the nut (A). Recess (7)
The diameter of (7) is arbitrary according to the diameter of the nut (A) as long as it is larger than the diameter of the notch opening (5b), but the nut (A) is preferably fitted. In doing so, it is preferable to make the size with some clearance. The diameter of the recesses (7) (7) is adjusted to the notch opening (5b).
With the diameter larger than the diameter of the nut (A), the nut (A) can be placed on the notch opening (5b) located in the recess (7) (7).

Further, the notch opening (5) of the column body (2b).
The end opposite to b) is provided with a storage groove (6b) for storing a handle bar (3) described later. This pillar (2
Although b) may be entirely formed of copper or malleable cast iron, it is preferable that the recesses (7) and (7) portions (8) and (8) be formed of copper or malleable cast iron and the like. The portion (9) may be formed of a light metal such as aluminum. The handle bar (3) is swingably provided at the upper end of the storage groove (6b) via a hinge (16). The handle bar (3) is entirely made of copper, malleable cast iron or the like.

The state of use of the tightening jig (1b) will be described. First, the notch opening (5) is located inside the recesses (7) and (7).
b) Place nut (A) on top. After the nut (A) is placed, the upper part of the nut (A) is brought into contact with one water pipe (B), and the other water pipe (B) is cut open (5).
Insert into b) and make contact with the bottom of nut (A). After tightening the nut (A), manually tighten this tightening jig (1b).
Hold and rotate the nut (A). At this time, the nut (A) is rotated while the handle bar (3) is housed in the housing groove (6b). Since this columnar body (2b) is formed in a substantially elliptical shape, it is easy to apply force to the tightening jig (1b), and the rotational force can be increased. Nut (A)
After rotating the required number of times,
After rotating b) to a state where it cannot be held and rotated, the handle bar (3) housed in the housing groove (6b) is erected in a direction perpendicular to the generatrix of the column (2b). Then, hold the handle bar (3) by hand and tighten the nut (A).
Rotate and tighten.

As described above, the columnar body (2b) having a substantially elliptical shape and having the required length is provided with the notch opening (5b) toward the generatrix direction of the columnar body (2b). Since at least one of the upper and lower ends is provided with recesses (7) (7) having a substantially hexagonal cross-section that is larger than the diameter of the notch opening (5b), the nut (A) is tightened to the tightening jig (1b). Does not come off. Therefore, the tightening jig (1b) is the water pipe (B) (B)
With the water pipes (B) and (B), the metal pipe coating that protects the water pipes (B) and (B) does not come into contact with the pipes and the tightening work can be easily performed, and the water pipes (B) and (B) do not bend. Even if there is, the water pipes (B) and (B) can be connected to each other, and the workability of tightening the bolt (A) can be improved. A notch opening (5b) is provided in a columnar body (2b) having a substantially oval shape and having a required length in a direction of a generatrix of the columnar body (2b), and at least one of upper and lower ends of the columnar body (2b) is provided. Side is provided with recesses (7) (7) having a substantially hexagonal cross-section, and the storage groove (6b) is provided on the major axis side of the columnar body (2b).
Since the handle bar (3) is swingably installed on the
The tightening work can be performed even in a narrow place or a place where the tightening work is difficult (see FIG. 10).

Next, another water pipe nut tightening jig according to an embodiment of the present invention will be described with reference to FIGS. (1c) is a water pipe (B) (B) nut (A)
A jig for screwing and tightening the
c) is a columnar body (2) of a required length as shown in FIGS.
b) and a handle bar (3). Column (2
The shape of c) is substantially elliptical, and this pillar (2c)
A cutout opening (5c) is provided at one end of the major axis of the device in the direction of the generatrix. At least one side of the upper and lower ends of the pillar (2c) is provided with nut engaging pieces (10) (10) of a required height for fitting the nut (A) at both ends of the short shaft. The distance between the nut engaging pieces (10) (10) is arbitrary according to the diameter of the nut (A) as long as it is larger than the diameter of the notch opening (5c), but preferably the nut ( It is preferable that the size is such that there is some clearance when A) is fitted.

Further, the notch opening (5) of the column (2c)
A storage groove (6c) for storing a handle bar (3) described later is provided at an end portion facing c). This pillar (2
Although c) may be formed entirely of copper, malleable cast iron or the like, it is preferable that the recesses (7), (7) portions (11) and (11) be formed of copper or malleable cast iron and the like. Part (12) (1
It is preferable to form 2) from a light metal such as aluminum. The handle bar (3) is swingably provided at the upper end of the storage groove (6c) via a hinge (17). The handle bar (3) is entirely made of copper, malleable cast iron or the like.

The usage state of the tightening jig (1c) will be described. First, the nut (A) is placed on the notch opening (5c) by engaging the nut engaging pieces (10) (10). After the nut (A) is placed, the upper part of the nut (A) is brought into contact with one water pipe (B), and the other water pipe (B) is inserted into the cutout opening (5b) so that the nut ( Contact the bottom of A). After screwing the nut (A), the tightening jig (1c) is gripped by hand to rotate the nut (A). still,
At this time, the handle bar (3) rotates the nut (A) while being stored in the storage groove (6c). This pillar (2
Since c) is formed in a substantially elliptical shape, the tightening jig (1
It is easy to apply force to b) and the rotational force can be increased. After rotating the nut (A) a required number of times, more specifically, after rotating the nut (A) to a state where it cannot be gripped and rotated by hand, the nut (A) is stored in the storage groove (6c). The handle bar (3) is raised in a direction perpendicular to the generatrix of the column (2c), the handle bar (3) is gripped by hand, and the nut (A) is rotated and tightened.

As described above, the columnar body (2c) having a substantially elliptical shape and having a required length is provided with the notch opening (5c) toward the generatrix direction of the columnar body (2c). Since the nut engaging portions (10) (10) having a required height are erected on at least one side of the upper and lower ends at both ends of the minor axis side, the tightening jig (1c) moves from the nut (A). It does not come off. Therefore, the tightening jig (1c) does not hit the water pipes (B) and (B), and the tightening work is facilitated without the metal plating film protecting the water pipes (B) and (B) peeling off. Even if the water pipes (B) and (B) can be performed and do not bend, the water pipes (B) and (B) can be connected to each other, and the workability of tightening the bolt (A) is improved. be able to. The columnar body (2c) having a required length and having a substantially oval shape is attached to the columnar body (2c).
The notch opening (5c) is provided in the generatrix direction of (c), and the nut engaging portions (10) (10) are erected at both ends of the short shaft side on at least one of the upper and lower ends of the column body (2c). And the storage groove (6) provided on the long axis side of the pillar (2c).
Since the handle bar (3) is swingably provided in c), the tightening work can be performed even in a narrow place or a place where it is difficult to perform the tightening work (see FIG. 10).

Next, another water pipe nut tightening jig according to an embodiment of the present invention will be described with reference to FIGS. (1d) is a water pipe (B) (B) nut (A)
A jig for screwing and tightening the
As shown in FIGS. 8 to 9, d) is a nut engaging portion (1
3) and wing parts (14) (14). The nut engaging portion (13) has a substantially U-shaped notch opening (5
d) is provided. The wing portions (14) (14) are provided at both ends of the nut engaging portion (13) and are formed thicker than the thickness of the nut engaging portion (13). The wing portions (14) and (14) are curved in shape, and the wing portions (14) and (14) are located at both ends of the nut engaging portion (13) about the nut engaging portion (13). It is provided with point symmetry in the part. Therefore, the fingers are applied to the curved surfaces (15) and (15) inside the wing parts (14) and (14), and the fastening jig (1
d) can be rotated and the rotational force can be increased. The distance between the wing parts (14) (14), that is, the lateral width of the nut engaging part (13) is arbitrary according to the diameter of the nut (A), but the nut (A) is preferably fitted. It is preferable that the size is such that there is some clearance when combined. The tightening jig (1d) may be entirely made of copper, malleable cast iron or the like, but preferably the nut engaging portion (13) is made of copper or malleable cast iron and the wing portion (14). (14) is preferably formed from a light metal such as aluminum. (18) (18) are holes for reducing the weight of the tightening jig (1d).

The state of use of the tightening jig (1d) will be described. First, the nuts (A) are placed on the nut engaging parts (10) by engaging the ends of the wing parts (14) (14). To do. After placing the nut (A), the upper part of the nut (A) is brought into contact with one water pipe (B) and the other water pipe (B)
Is inserted into the notch opening (5d) and brought into contact with the lower portion of the nut (A). After screwing the nut (A), the tightening jig (1d) is gripped by hand and the nut (A) is rotated and tightened.

As described above, since the wing portions (14) and (14) thicker than the thickness of the nut engaging portion (10) are provided at both ends of the nut engaging portion (10), the nut (A) is provided. The tightening jig (1d) will not come off. Therefore, the tightening jig (1d) does not hit the water pipes (B) and (B), and the tightening work is facilitated without peeling the metal plating film protecting the water pipes (B) and (B). Even if the water pipes (B) and (B) can be performed and do not bend, the water pipes (B) and (B) can be connected to each other, and the workability of tightening the bolt (A) is improved. be able to. Further, the tightening work can be performed even in a narrow place or a place where it is difficult to perform the tightening work (see FIG. 10).

[0026]

As described above, the present invention is a jig for screwing and tightening a nut on a water pipe, and the tightening jig is a column body having a substantially oval shape and having a required length. And a handle bar, and a long hole having a substantially hexagonal cross section is bored in the pillar toward the generatrix direction of the pillar, and the long axis side one end of the pillar is extended from the long hole. A cutout opening having a diameter smaller than that of the elongated hole is provided, and a storage groove for storing a handle bar is provided at an end portion of the columnar body facing the cutout opening, and the handle bar is provided at an upper end portion of the storage groove. Since the water pipe nut tightening jig is characterized in that it is swingably provided via a hinge, it has the following effects.

That is, since the elongated hole having a substantially hexagonal cross-section is bored in the generatrix direction of the columnar body having a substantially elliptical required length, the tightening jig does not come off from the nut. .
Therefore, the fastening jig does not hit the water pipe, the metal plating film protecting the water pipe is not peeled off, and the fastening work can be easily performed. The water pipes can be connected to each other, and the workability of tightening the nut can be improved.
Further, a long hole having a substantially hexagonal cross section is bored in the generatrix direction of a column body having a substantially elliptical length and a handle bar is swingably provided in a storage groove provided in the column body. Because I chose
The tightening work can be performed even in a narrow place or a place where tightening work is difficult.

Further, the jig is a jig for screwing and tightening a nut on a water pipe, and the tightening jig comprises a pillar body having a required length and having an approximately elliptical shape, and a handle bar. A cutout opening is provided at one end on the shaft side in the generatrix direction of the column body, and at least one of the upper and lower ends of the column body has a recess having a substantially hexagonal cross section with a diameter larger than the diameter of the cutout opening. A storage groove for storing the handle bar is provided at an end of the provided columnar body facing the cutout opening, and the handle bar is swingably provided at an upper end of the storage groove via a hinge. The water pipe nut tightening jig is characterized by the following effects.

That is, a notched opening is provided in a columnar body having a required length which is substantially oval in the direction of the generatrix of the columnar body, and a diameter larger than the diameter of the notched opening is provided on at least one of the upper and lower ends of the columnar body. Since the large recess having a substantially hexagonal cross section is provided, the tightening jig does not come off from the nut. Therefore, the fastening jig does not hit the water pipe, and the fastening work can be easily performed without peeling off the metal plating film that protects the water pipe, and even the water pipe does not bend. The water pipes can be connected to each other, and the workability of tightening the bolt can be improved. In addition, a notched opening is provided in the columnar body of a required length that is substantially oval in the direction of the generatrix of the columnar body, and a recess having a substantially hexagonal cross section is provided at least on one side of the upper and lower ends of the columnar body. Since the handle bar is swingably provided in the storage groove provided on the long axis side of the pillar, the tightening work can be performed even in a narrow place or a place where it is difficult to perform the tightening work.

A jig for screwing a nut into a water pipe and tightening it. This tightening jig is composed of a columnar body having a required length and having a substantially oval shape, and a handle bar. A notch opening is provided at one end in the generatrix direction of the column body, and at least one side of the upper and lower ends of the column body is provided with a nut engaging piece of a required height standing at both ends on the minor axis side. An accommodation groove for accommodating the handle bar is provided at an end of the columnar body facing the cutout opening, and the handle bar is swingably provided at an upper end portion of the accommodation groove via a hinge. The water pipe nut tightening jig has the following effects.

That is, a notch opening is provided in a columnar body of a required length which is substantially elliptical in the direction of the generatrix of the columnar body, and at least one of the upper and lower ends of the columnar body is provided at both ends on the minor axis side. Since the nut engaging portion having the required height is provided upright, the tightening jig does not come off from the nut. Therefore, the fastening jig does not hit the water pipe, the metal plating film protecting the water pipe is not peeled off, and the fastening work can be easily performed. The water pipes can be connected to each other, and the workability of tightening the bolt can be improved. In addition, a notched opening is provided in the columnar body of a required length that is substantially oval in the direction of the generatrix of the columnar body, and at least one of the upper and lower ends of the columnar body has nut nuts at both ends on the minor axis side. Since the joint part is erected and the handle bar is swingably installed in the storage groove provided on the long axis side of the pillar, tightening work can be performed even in a narrow place or a place where tightening work is difficult. It can be performed.

A jig for screwing a nut into a water pipe and tightening the nut. The tightening jig is provided with a nut engaging portion having a substantially U-shaped notch opening and both end portions of the nut engaging portion. And a wing portion thicker than the wall thickness of the nut engaging portion, the water pipe nut tightening jig has the following effects.

That is, since the wing portions thicker than the wall thickness of the nut engaging portion are provided at both ends of the nut engaging portion, the tightening jig does not come off from the nut. Therefore,
The fastening jig does not come into contact with the water pipe, the metal plating film for protecting the water pipe is not peeled off, and the fastening work can be easily performed. The pipes can be connected to each other, and the workability of tightening the bolts can be improved. Further, the tightening work can be performed even in a narrow place or a place where it is difficult to perform the tightening work.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view showing a nut tightening jig for a water pipe according to an embodiment of the present invention.

FIG. 2 is a plan view showing another water pipe nut tightening jig according to an embodiment of the present invention.

3 is a front view showing the water pipe nut tightening jig shown in FIG. 2. FIG.

4 is a rear view of the water pipe nut tightening jig shown in FIG. 2. FIG.

FIG. 5 is a plan view showing another water pipe nut tightening jig according to an embodiment of the present invention.

FIG. 6 is a front view showing the water pipe nut tightening jig shown in FIG. 5;

7 is a rear view of the water pipe nut tightening jig shown in FIG. 5. FIG.

FIG. 8 is a plan view showing another water pipe nut tightening jig according to an embodiment of the present invention.

FIG. 9 is a front view showing the water pipe nut tightening jig shown in FIG. 8;

FIG. 10 is a perspective view for explaining a mounting state of a nut.

FIG. 11 is a schematic explanatory view showing a conventional tightening jig.

FIG. 12 is a schematic explanatory view showing a conventional tightening jig.

[Explanation of symbols]

 1a Tightening jig 1b Tightening jig 1c Tightening jig 1d Tightening jig 2a Column 2b Column 2c Column 3 Handle bar 4 Long hole 5a Notch opening 5b Notch opening 5c Notch opening 5d Notch opening 6a Storage groove 6b Storage groove 6c Storage groove 7 Recessed portion 10 Nut engaging piece 13 Nut engaging portion 14 Wing portion

Claims (4)

[Claims] 1. A jig for screwing a nut into a water pipe to tighten it, the tightening jig comprising a column body of a required length, which has a substantially oval shape, and a handle bar. A long hole having a substantially hexagonal cross section is bored in the generatrix direction of the column body, and a notch having a diameter smaller than the diameter of the long hole is formed at one end of the column body on the long axis side. An opening is provided and an accommodation groove for accommodating the handle bar is provided at an end portion of the columnar body facing the cutout opening, and the handle bar is swingably provided at an upper end portion of the accommodation groove via a hinge. A water pipe nut tightening jig characterized by the following. 2. A jig for screwing and tightening a nut on a water pipe, wherein the tightening jig is composed of a substantially elliptical column body of a required length and a handle bar. A cutout opening is provided at one end on the shaft side in the generatrix direction of the column body, and at least one of the upper and lower ends of the column body has a recess having a substantially hexagonal cross section with a diameter larger than the diameter of the cutout opening. A storage groove for storing the handle bar is provided at an end of the provided columnar body facing the cutout opening, and the handle bar is swingably provided at an upper end of the storage groove via a hinge. A jig for tightening nuts for water pipes, which is characterized in that 3. A jig for screwing and tightening a nut on a water pipe, wherein the tightening jig comprises a column body having a required length and having an approximately elliptical shape, and a handle bar. A notch opening is provided at one end of the shaft toward the generatrix direction of the column, and at least one of the upper and lower ends of the column is provided with a nut engaging piece of a required height at both ends of the short shaft. An accommodation groove for accommodating the handle bar is provided at an end of the columnar body facing the cutout opening, and the handle bar is swingably provided at an upper end of the accommodation groove via a hinge. A jig for tightening nuts for water pipes, which is characterized in that 4. A jig for screwing and tightening a nut on a water pipe, wherein the tightening jig has a nut engaging portion having a substantially U-shaped notch opening, and both end portions of the nut engaging portion. And a wing portion thicker than the nut engaging portion, the water pipe nut tightening jig.