JPH10202552A - Extension tool for fastening tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an extension tool for fastening tool by which a fastening work can be easily performed even if an obstacle exists on the axis of a fastening member and a torque control can be surely performed. SOLUTION: An extension tool 5 for fastening tool is formed by including a bar-shaped operation side arm 61 provided with an operation end 612 with which a fastening tool 4 is connected, a bar-shaped action side arm 62 provided with an action end 662 to be connected with a fastening member 31 and a link rod 63 which is connected with each of these arms 61, 62 at a location deviated from an axis A of the fastening member 31 and is engaged to each arm 61, 62 so that the operation end 612 and the action end 622 may be distanced and arranged on the axis A. Because the link rod 63 is deviated from the axis line A, an obstacle on the axis A is evaded and fastening of the fastening member 31 is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fastening tool extension interposed between a fastening member and a fastening tool for fastening the fastening member, for example, when an obstacle is present on the axis of the fastening member. It can be used as an extension for tightening tools.

[0002]

2. Description of the Related Art Conventionally, fastening members such as bolts and nuts have been used to join building elements such as columns and beam members at a building site. The building elements can be joined to each other by the fastening tool, so that the work at the building site can be simplified and the construction period can be shortened. For example, in a unit-type building formed by combining a plurality of box-shaped building units as building elements, a unit-type building 1 as shown in FIG.
And the shelter balcony 2 on the shelter 1B are also formed by arranging the balcony units 21 side by side, and connecting the building units 11 and the balcony units 21 adjacent to each other with a fastening member made of a bolt and a nut.

[0003] Referring to FIG. 6, the building unit 11 has a steel frame 111 having a framed structure, and has columns 112 erected at four corners and upper ends of the columns 112. , And a beam 113 communicating between the lower ends.
14, floor surface material 115, outer wall material 116, ceiling material 117, and other equipment members are incorporated as needed.
Similarly, the balcony unit 21 also has a floor joist 212, a floor surface material 213, and a waterproof sheet 214 previously attached to a frame 211 in which C-shaped steel is combined in a square shape in a factory.

[0004] In the case of such a unit-type building 1, at the construction site, only the connection work of the building unit 11 and the balcony unit 21 is mainly required, and the on-site work is reduced, and the construction period can be shortened. .

[0005]

When building elements are joined to each other at a building site using such fastening members such as bolts and nuts, there is an obstacle on the axis of the fastening members, and the fastening members are tightened. May not work well. That is, as shown in FIG. 6, when connecting the building unit 11 and the balcony unit 21, the frame 111 of the building unit 11 and the base frame 2 of the balcony unit 21 are connected.
11 are connected and joined by the fastening member 31, but the opening 21 formed in the floor material 213 of the balcony unit 21 is formed.
5 cannot be formed on the axis of the fastening member 31, and the floor surface material 213 of the balcony unit 21 may become an obstacle, making the fastening operation of the fastening member 31 difficult. .

It is to be noted that such a displacement often occurs mainly in relation to the connection with other members. In the case of FIG. 6, the floor surface material 212 of the balcony 2 and the frame 111 of the building unit 11 will be described. Outer wall material 116 provided on top
It is necessary to carefully carry out the rising waterproof
While it is necessary to increase the E dimension of
This is because the fastening member 31 needs to be firmly joined in the vicinity of the column 112 of the building unit 11, and therefore the dimension F in FIG. 6 needs to be reduced as much as possible.

In this case, even when the fastening tool extension 105 is used in combination with the fastening tool 4 or the like, it may be difficult to attach the fastening tool 31 to the fastening member 31, and there is a problem that much time is required for the fastening operation. In addition, it is possible to attach a special fastening tool extension such as a universal joint to the fastening tool 4 to fasten the fastening member 31. However, in order to perform the fastening work while controlling the fastening torque, the fastening tool The displayed torque of the torque wrench serving as a tightening tool must be determined in consideration of the influence of the extension tool, and there is a problem that the tightening operation becomes complicated.

SUMMARY OF THE INVENTION An object of the present invention is to provide an extension for a fastening tool that can easily perform a fastening operation and reliably perform torque control even if there is an obstacle on the axis of the fastening member. Is what you do.

[0009]

An extension for a fastening tool according to the present invention is interposed between a fastening member 31 and a fastening tool 4 for fastening the fastening member, as described with reference to the drawings. And a rod-shaped operating arm 61 having an operating end 612 to which the tightening tool is connected, and a rod-shaped operating arm having an operating end 622 connected to the fastening member. 62 and these arms 61, 6 at positions offset from the axis A of the fastening member.
2 and a link rod 63 for engaging each arm so that the operating end and the working end are spaced apart from each other on the axis.

According to the present invention, since the link rod connects the operation side arm and the operation side arm at a position deviated from the axis of the fastening member, even if there is an obstacle on the axis of the fastening member. This can be bypassed, and the fastening operation is simplified. Also, since the working end connected to the fastening member and the operating end to which the fastening tool is connected are spaced apart on the axis of the fastening member, a torque wrench is connected to the operating end to properly adjust the tightening torque of the fastening member. Measurement can be performed, and torque management can be performed reliably.

In the above, a link rod is used as the link rod which is connected to each of the operation side arm and the operation side arm so as to be movable in the extending direction of these arms and to be fixed at a predetermined position. preferable.
With such a link rod, the deviation of the link rod from the axis of the fastening member can be adjusted, so that the detour dimension D can be adjusted according to the size of the obstacle,
The usability of the extension for the fastening tool is improved, and the fastening operation is further simplified.

The above-mentioned extension for a tightening tool has an extension body 6 and a socket portion 7 detachably connected to the extension body and attached to the fastening member. However, it is preferable that the fastening tool is detachable with the fastening tool. In other words, if the socket is detachable from the extension body and can be directly connected to the tightening tool, it can be used as an extension of a tightening tool that can support various bolt head diameters, and its versatility can be improved. Further improve.

Further, the connection between the operation side arm and the operation side arm and the link rod is performed by inserting the operation side arm and the operation side arm into through holes 63 formed in the link rod.
2 on the surfaces of the operation-side arm and the working-side arm along the extension direction thereof.
A is preferably formed, and the link rod is preferably connected so as to be held and fixed by two nuts 64 screwed into the male screw portion. That is, with such a connection, the adjustment of the detour dimension described above can be arbitrarily set.
The usability of the extension for the tightening tool is further improved.

Preferably, the operation-side arm and the operation-side arm are bar-shaped members having a rectangular cross section, and the male screw portion is formed at a corner of the rectangular cross section.
The insertion hole of the link rod is preferably formed as a square hole corresponding to the square cross section of the arm. That is, when the arm is inserted through such an insertion hole, the rotation of the arm with respect to the link rod is restricted, so that the position is not shifted between the upper and lower arms, the usability is further improved, and the tightening torque is further improved. , The accuracy of torque measurement is further improved. Further, it is preferable that a notch 632B is formed at a corner portion of the insertion hole corresponding to the male screw portion. That is, since the notch is formed at the corner of the insertion hole, the male screw on the arm is not damaged when the arm and the link rod are connected.

As the operation side arm and the operation side arm described above, an arm provided with a scale 611B on its side surface capable of measuring the distance from the operation end or the operation end to the connection position of the link rod is used. preferable.
That is, if the scale is provided on the side surface, the distance from the working end or the operating end to the connecting position of the link rod can be measured immediately, so that it is possible to easily assemble the fastening tool extension. In addition, the management of the tightening torque can be performed with higher accuracy.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The description of the same members or portions as those already described will be omitted or simplified. FIG. 1 shows a fastening tool extension according to the present embodiment, and the fastening tool extension 5 is formed to include an extension body 6 and a socket part 7.
The extension tool main body 6 includes an operation-side arm 61 to which the fastener 4 is connected, an operation-side arm 62 that is arranged at a predetermined distance from the operation-side arm 61,
The link rod 63 is formed to include a link rod 63 connected to each of the arms 62 and a nut 64 for holding and fixing the link rod 63 to each of the arms 61 and 62.

As shown in FIG. 2, the operation side arm 61 is provided with an arm portion 611 made of a rod-like member having a rectangular cross section and a fitting projection 401 of the fastening member 4 provided on an upper surface of a base end thereof. And the operating end 612 to be formed. In the vicinity of the four corners of the rectangular cross section of the arm section 611, a male screw section 611A is formed along the extending direction of the arm section 611, and the male screw section 611A is screwed with the nut 64.

On the other hand, a scale 611B for distance measurement based on the above-mentioned operation end 612 is formed on a smooth portion of the side surface of the arm portion 611, whereby the distance from the operation end 612 to the connection position of the link rod 63 is formed. Can measure distance.
The operation end 612 is formed by welding a columnar member to the upper surface of the arm portion 611 in FIG.
A concave portion 612A for fitting the fitting protrusion 401 is formed.

Similarly to the operation side arm 61 described above, the operation side arm 62 has an operation end 621 provided at the base end of the arm portion 611, and this operation end 622 is mounted on a cylindrical pedestal. Is provided with a fitting protrusion 622A having a shape corresponding to the fitting protrusion 401 of the fastening tool 4, and the recess 701 formed on the upper surface of the socket portion 7 is fitted into the fitting protrusion 622A. The arm portion 611 of the operation side arm 62 has a scale 611B and a male screw portion 61 on the side surface and the corner portion similarly to the arm portion 611 of the operation side arm 61.
1A is formed.

As shown in FIG. 3, the link rod 63 has two insertion holes 632 formed at both ends of a rod-shaped main body 631, and the arm 6 is inserted into the insertion holes 632.
1, 62 are inserted and connected. The insertion hole 632 has a shape corresponding to the rectangular cross section of the arm portion 611, and when inserted, the side surface of the arm portion 611 changes to the side surface 6 of the insertion hole 632.
32A, each connected arm 61,
The rotation of the link rod 63 is controlled by the link rod 62.
Also, at the corner of the insertion hole 632 corresponding to the male screw 611B formed at the corner of the arm 611,
A semicircular notch 632B is formed, and the insertion hole 632 is formed.
The male screw portion 611B is not damaged when the arm portion 611 is inserted through the arm. The link rod 63
The nut 64 has a female screw portion corresponding to the male screw portion 611B of the arm portion 611, and the outer shape of the nut is larger than the insertion hole 632 of the link rod 63.

When assembling the extension 5 for the fastening tool, referring to FIG. 4, the opening 21 through which the floor surface material 213 serving as an obstacle is cut off from the axis A of the fastening member 31 in advance.
The detour dimension D up to the five ends is measured, and the nut 64 on the left side in FIG.
Set the position of. Then, the link rod 63 is connected to each of the arms 61 and 62, and the right nut 64 in FIG. When using the fastening tool extension 5 assembled in this way, first, the fastening tool 4 is attached to the operation end 612 of the operation side arm 61, and the socket portion 7 is attached to the operation end 622 of the operation side arm 62. Next, the socket part 7 is mounted on the fastening member 31 and the tightening tool 4 is rotated. Note that, since the tightening tool extension 5 also rotates with the turning operation of the tightening tool 4, when the link rod 63 comes into contact with the end of the opening 215, the socket 7 is removed from the fastening member 31. And re-attach.

According to the first embodiment described above, the following effects can be obtained. That is, since the link rod 63 connects the operation side arm 62 and the operation side arm 61 at a position shifted from the axis A of the fastening member 31, the fastening member 31
Even if there is an obstacle (213) on the axis A, the obstacle (213) can be bypassed, and the fastening operation can be easily performed. Since the working end 622 and the operating end 612 connected to the fastening member 31 are spaced apart from each other on the axis A of the fastening member 31, the fastening member 31 can always be tightened in an appropriate state. Even when a torque wrench is used, the measurement of the tightening torque can be accurately performed, and the torque management can be reliably performed.

Since the displacement of the link rod 63 from the axis A of the fastening member 31 can be adjusted, the detour dimension D can be adjusted according to the size of the obstacle (213).
The usability of the fastening tool extension 5 is improved, and the fastening operation can be further simplified. Socket part 7
Can be attached to and detached from the extension tool body 6 and the socket portion 7 can be directly connected to the fastening tool 4, and can be used as a fastening tool extension of the fastening tool 4 that can support various bolt head diameters. Versatility is further improved.

Since the position of the link rod 63 with respect to the arms 61 and 62 can be arbitrarily set along the extending direction of the arms 61 and 62, the position of the link rod 63 can be freely adjusted according to the detour dimension D. The position can be set, and the usability of the fastening tool extension can be further improved.

The arm portions 611 of the arms 61 and 62 are rod-shaped members having a rectangular cross section, and the insertion holes 632 of the link rod 63
Is a rectangular hole corresponding to this rectangular cross section, so that the arms 61 and 62 do not rotate with respect to the link rod 63,
There is no displacement between the two arms 61 and 62, the usability is improved, and the accuracy of torque measurement can be further improved. Since the scale 611B is formed on the side surface of the arm portion 611, the distance from the working end 622 or the operating end 612 to the connection position of the link rod 63 can be immediately measured visually, and the setting of the fastening tool extension 5 can be performed. Can be facilitated.

The present invention is not limited to the above-described embodiment, but includes the following modifications. That is, in the above-described embodiment, the extension body 6 and the socket portion 7 are detachable, but the invention is not limited thereto, and the extension body and the socket may be integrally formed. In the above-described embodiment, both arms 61, 62
The rotation was restricted by the combination of the square cross section of the above and the rectangular insertion hole 632 of the link rod 63. However, the present invention is not limited to this, and a cut along the extension direction was formed in a part of the cylindrical rod-shaped member. The rotation may be restricted by a combination of an arm and a link rod having an insertion hole corresponding to a cross section of the arm. In short, another structure may be used as long as the arm does not rotate in the axial direction when the arm and the link rod are connected.

Further, in the above-described embodiment, the link rod 63 is held and fixed by the two nuts 64. However, the present invention is not limited to this, and a plurality of arm side holes are formed along the extending direction of each arm. And a through-hole penetrating from the side surface of the link rod 63 to the through-hole of the arm, and one of the plurality of arm-side holes and a pin inserted through the through-hole. The structure which is fixed may be sufficient.

In the above-described embodiment, the socket 7 has the same structure as a normal box wrench. However, the present invention is not limited to this, and a socket having a ratchet function may be used. Thereby, the fastening operation can be performed without removing the socket portion from the fastening member. In addition, specific structures, shapes, and the like at the time of carrying out the present invention may be other structures and the like as long as the object of the present invention can be achieved.

[0029]

As described above, according to the extension for a tightening tool of the present invention, since the operating end and the working end are connected at positions deviated from the axis of the fastening member, there is an obstacle on the axis of the fastening member. Even if there is an object, the fastening operation can be easily performed, and the torque control can be reliably performed.

[Brief description of the drawings]

FIG. 1 is an exploded view showing a configuration of a fastening tool extension according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view showing an operation-side arm in the embodiment described above.

FIG. 3 is a front view showing a link rod in the embodiment.

FIG. 4 is a cross-sectional view illustrating a method of using the extension for a tightening tool in the above-described embodiment.

FIG. 5 is a schematic perspective view showing a unit-type building formed by combining building units in a conventional example.

FIG. 6 is a cross-sectional view illustrating a method of fastening a fastening member in a conventional example.

[Explanation of symbols]

 4 Tightening Tool 5 Tightening Tool Extension Tool 6 Extension Tool Main Body 7 Socket Part 31 Fastening Member 61 Operation Side Arm 62 Working Side Arm 63 Link Rod 64 Nut 611A Male Thread Part 611B Scale 612 Operating End 622 Working End 632 Insertion Hole 632B Notch A Axis

Claims (6)

[Claims] An extension for a fastening tool interposed between a fastening member and a fastening tool for fastening the fastening member, comprising: a rod-shaped operating side arm having an operating end to which the fastening tool is connected; A rod-shaped working side arm having a working end connected to the fastening member, and each of these arms connected to each of the arms at a position deviated from the axis of the fastening member, and each of the arms has the operating end and the working end. And a link rod engaged to be spaced apart on the axis. 2. The extension for a fastening tool according to claim 1, wherein the extension for the fastening tool is an extension body, and a socket detachably connected to the extension body and attached to the fastening member. And an extension for the fastening tool, wherein the socket is detachable from the fastening tool. 3. The extension for a tightening tool according to claim 1, wherein the link rod moves in a direction in which the operation side arm and the operation side arm extend, respectively. An extension for a tightening tool, which is freely and fixedly connected at a predetermined position. 4. The extension for a tightening tool according to claim 1, wherein the operation side arm and the operation side arm are respectively inserted and connected by insertion holes formed in the link rod. , On the surface of the operation side arm and the working side arm,
A male screw part is formed along the extension direction, and the link rod is fixedly held by two nuts screwed to the male screw part, and is a tool extension for a fastening tool. 5. The extension for a tightening tool according to claim 4, wherein the operation-side arm and the operation-side arm are rod-shaped members having a square cross section, and the male screw portion is formed at a corner of the square cross section. The insertion hole of the link rod is a square hole corresponding to the square cross section of the arm, and the rotation of the arm with respect to the link rod is restricted by inserting the arm into the insertion hole, and corresponds to the male screw portion. An extension for a fastening tool, wherein a notch is formed at a corner of the insertion hole. 6. The extension for a tightening tool according to claim 1, wherein the operation side arm and the operation side arm have side surfaces provided with the link from the operation end or the operation end. An extension for a tightening tool, comprising a scale capable of measuring a distance to a connecting position of a rod.