Jig for rotary tool

Abstract

To drive pre-coated bolts without damaging coating thereof and with good efficiency.SOLUTION: (a) A jig 30 is constituted from a plurality of second components 21 comprising a rigid resin and a steel-made first component 1. (b) The selected second component 21 is fitted into a rotary recess 5 of the first component 1 attached to a rotary tool (impact driver) 33, and a tapping screw 35 is inserted in a bolt insertion part 25 of the second component 21. Since the other face 24b of the second component 21 projects with respect to the other face 4b of a flat board body 3 of the first component 1, a head 36 of the tapping screw 35 can be inserted in the bolt insertion part 25 of the second component 21 without contacting the first component 1, and can be driven by the rotary tool 33.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a jig for a rotary tool that is inserted between a rotary tool used when tightening bolts having a head formed on a screw shaft, such as bolts and tapping screws, and the bolts. [Background technology]

[0002] In order to rotate bolts and tapping screws that have polygonal (usually hexagonal) heads formed on the screw shaft, a jig with a bolt insertion portion, which is a recess that matches the shape of the head, is inserted into the chuck of a rotary tool such as an impact wrench and tightened, the bolt head is inserted into the bolt insertion portion, and the bolt or tapping screw is then driven in with the rotary tool. Generally, when it comes to bolt heads and nuts, jigs of various diameters are prepared to fit bolts with different head (nut) diameters, and these are attached and detached from the chuck of the rotary tool, which poses the first problem of making the work complicated.

[0003] Furthermore, when attaching stairs or other structures to walls with tapping screws, the exposed heads of the tapping screws are sometimes painted in various ways to match the interior finish of the wall after installation. In this case, painting each screw individually is a tedious process, so pre-painted tapping screws are sometimes used. In this case, the jig generally needs to be strong and hard, and is made of steel, which creates a second problem: the jig can scratch the paint on the tapping screws.

[0004] To address the first problem, it has been proposed to provide a step in the jig to make the bottom side smaller in diameter (Patent Documents 1 and 2). Also, to address the second problem, it has been proposed to use a jig with a threaded portion made of an elastic material (Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Utility Model Publication H03-44566 [Patent Document 2] Japanese Patent Application Laid-Open No. 2015-36187 Summary of the Invention [Problem to be solved by the invention]

[0006] The step was provided to reduce the diameter at the bottom to accommodate smaller bolt diameters, but this increased the axial length of the jig, resulting in a lack of stability when attached to a rotary tool. Furthermore, when a jig with a threaded portion made of an elastic material is used, the parts other than the elastic material are made of steel, so the heads of the bolts hit parts other than the elastic material, and it was not possible to prevent damage to the heads of the bolts. Conversely, if the work was done slowly and carefully so that the heads of the bolts would not hit parts other than the elastic material, there was a problem that the work efficiency was reduced. [Means for solving the problem]

[0007] The present invention solves the above-mentioned problem by comprising a first member made of steel that can be attached to a rotary tool and a second member made of flat hard resin that has a bolt insertion portion, and by configuring the tip surface of the second member to protrude beyond the tip surface of the first member.

[0008] In other words, this invention is a jig to be attached to a rotary tool that rotates the heads of bolts, etc., and is characterized in that it has an attachment shaft on one side that is attached to the rotary tool and a bolt insertion portion on the other side into which the heads of the bolts can be inserted, and is configured as follows. (1) The jig includes a first member made of steel and having the mounting shaft, and a second member made of a hard resin material and having a flat plate-shaped portion for receiving a bolt or the like. (2) The first member has a flat disc-shaped body to one side of which the mounting shaft is fixed, and the other side of the disc-shaped body has a rotation recess into which the polygonal outer peripheral locking portion of the second member is fitted. (3) It is configured by combining one of the first members with a plurality of second members each having the same outer peripheral engaging portion but bolt insertion portions of different diameters. (4) The first member and the second member are configured so that, when the second member is fitted into the first member, the tip end surface of the second member protrudes from the tip end surface of the first member.

[0009] In addition, the first member is a jig for a rotary tool, characterized in that the disk body is configured such that on one side where the mounting shaft is fixed, an extraction hole is formed around the mounting shaft, penetrating from one side toward the rotation recess side.

[0010] In addition, when the depth from the opening edge to the bottom of the rotation recess of the first member is H1 and the thickness of the base of the second member is H2, H2>H1 The jig for a rotary tool is characterized by the above.

[0011] Furthermore, the present invention provides a jig for a rotary tool, characterized by the following configuration. (1) In the second member, an opening is formed in the base from one side to the other, forming a bolt insertion portion. (2) In the first member, a protective sheet was attached to the bottom of the rotation recess.

[0012] The bolt insertion portion in the above-mentioned example is formed in a polygonal shape to match the shape of the bolt head, but it is usually a regular hexagon or regular quadrilateral (square), but it can be set to match the shape of the bolt head.

[0013] The bolts mentioned above are members with a polygonal head on a screw shaft, and include not only bolts and tapping screws, but also nuts that do not have a screw shaft.

[0014] The flat shape mentioned above includes a flat appearance, and includes a case where a rotary recess is formed by hollowing out a flat material, or a thin strip-like thin plate is bent into a flat shape. [Effects of the Invention]

[0015] This invention is configured with a steel first member that can be attached to a rotary tool and a plurality of flat, hard resin second members that have bolt insertion portions, so that by replacing the second member, it is possible to easily drive bolts of different preliminary diameters. Furthermore, because the second member is made of resin, it will not damage the paint on pre-painted bolts. Furthermore, since the tip surface of the second member protrudes from the tip surface of the first member when the second member is inserted into the first member, the head of the bolt can be easily inserted into the second member without visual inspection. In particular, in the case of painted bolts, the bolt can be inserted into the second member without touching the first member, so the paint will not be damaged. [Brief explanation of the drawings]

[0016] [Figure 1] 1A is a cross-sectional view showing the configuration of a first embodiment of the present invention, FIG. 1B is a cross-sectional view showing the state of use, and FIG. 1C is a cross-sectional view of another embodiment of the second member. [Figure 2] 1A is a plan view of the first member of the first embodiment of the present invention, (b) is a left side view, (c) is a front view, (d) is a right side view, (e) is a rear view, and (f) is a bottom view. [Figure 3] The second member of the first embodiment of the present invention, (1-a) is a plan view for the M12 type, (1-b) is a front view of the same, (1-c) is a right side view of the same, (2-a) is a plan view for the M10 type, (2-b) is a front view of the same, and (2-c) is a right side view of the same. [Figure 4] The second member of the first embodiment of the present invention, (3-a) is a plan view for the M8 type, (3-b) is a front view of the same, (3-c) is a right side view of the same, (4-a) is a plan view for the M6 ​​type, (4-b) is a front view of the same, and (4-c) is a right side view of the same. [Figure 5] 10A is a cross-sectional view showing the configuration of a second embodiment of the present invention, FIG. 10B is a cross-sectional view showing the state of use, and FIG. 10C is a cross-sectional view showing another embodiment of the second member. [Figure 6]1A is a plan view of the first member of the second embodiment of the present invention, (b) is a left side view, (c) is a front view, (d) is a right side view, (e) is a rear view, and (f) is a bottom view. [Figure 7] The second member of the second embodiment of the present invention, (1-a) is a plan view for the M12 type, (1-b) is a front view of the same, (1-c) is a right side view of the same, (2-a) is a plan view for the M10 type, (2-b) is a front view of the same, and (2-c) is a right side view of the same. [Figure 8] The second member of the second embodiment of the present invention, (3-a) is a plan view for the M8 type, (3-b) is a front view of the same, (3-c) is a right side view of the same, (4-a) is a plan view for the M6 ​​type, (1-b) is a front view of the same, and (1-c) is a right side view of the same. DETAILED DESCRIPTION OF THE INVENTION

[0017] In both the first and second embodiments, a jig 30 for a rotary tool 33 of the present invention is made up of a first member 1 and a second member 21 attached to the first member 1 (FIG. 1).

[0018] 1. First embodiment (FIGS. 1 to 4)

[0019] (A) First member 1 (Fig. 1, Fig. 2)

[0020] (1) The first member 1 is formed by vertically fixing the base end of a mounting shaft 11, which can be fixed to the chuck of a rotary tool 33, to one surface 4a of a flat plate 3 that is a regular hexagon in plan view. A rotary recess 5, which is a regular hexagon in plan view, is formed at a depth H01 from the other surface 4b of the flat plate 1. The regular hexagon of the rotary recess 5 has a diagonal length La1, and the bottom surface 6 of the flat plate 3, including the regular hexagon on the periphery of the flat plate 3 and the regular hexagon on the outer periphery of the rotary recess 5, is formed with rotational symmetry around the center of the flat plate 3 and line symmetry on the diagonal (Figure 1). Therefore, the outer periphery 3a of the flat plate 3 and the inner surface 7 of the rotary recess 5 are formed with the same thickness all around. The flat plate 3 can also be formed by fixing a strip-shaped flat plate to a hexagonal frame (the outer periphery of which is the outer peripheral surface 3a) on a hexagonal flat plate (one surface 4a, the other surface the bottom surface 6), with the inside of the frame being the rotation recess 5. Alternatively, the rotation recess 5 can be formed by hollowing out the regular hexagonal flat plate 3, and any manufacturing method can be used.

[0021] (2) Furthermore, between the outer peripheral surface 3a of the flat plate 3 and the rotation recess 5, screw holes 8 are formed perpendicular to the bottom surface 6 of the rotation recess 5 (horizontally) (Figs. 2(b) to (e)). Three screw holes 8 are formed, one at a time near each side of the hexagon. The screw holes 8 are used for screws (not shown) that hold the first member 1 and the second member 21 together, so they are formed evenly in the rotation direction (around the center). For example, two holes are formed at an angle of 180 degrees, and six holes are formed corresponding to all sides of the hexagon. In addition, small openings 10, 10 are formed near the middle of each side of the hexagon between the bottom surface 6 of the rotation recess 5 of the flat plate 3 and one surface 4a of the flat plate 3 (FIGS. 2(a)(f)). The small openings 10, 10 are used by inserting a rod-shaped object into the small openings 10 when removing the second member 21 from the first member 1. Currently, small openings 10 are formed at positions corresponding to all sides of the hexagon, but it is sufficient to form at least two small openings at rotationally symmetric positions (positions at an angle of 180 degrees).

[0022] (3) A protective sheet 9 made of a material such as resin that will not damage the paint on the bolts is attached near the center (surrounding the flat position of the mounting shaft 11) on the bottom surface 6 of the rotation recess 5 of the small platen 3. This is to prevent the bolts from directly hitting the bottom surface 6 of the rotation recess 5, since the bottom surface 6 of the rotation recess 5 is made of steel.

[0023] (B) Second member 21 (FIGS. 1, 3, and 4)

[0024] (1) A regular hexagonal opening is formed from one surface 24a to the other surface 24b of a regular hexagonal base 23 having a diagonal length La2 and a height Ha2 at the center to form a bolt insertion portion 25, which constitutes the second member 21. The second member 21 is formed with the bolt insertion portion 25 that is fitted onto the head of a bolt 36 and can transmit the rotation of the rotary tool 33 to the bolt. The second member 21 is usually made of the same material throughout, and the bolt insertion portion 25 is made of a material that is less hard than steel (to the extent that it does not damage the paint coating on the bolt head) and has a shape-retaining ability that allows the rotation of the rotary tool 33 to be transmitted to the bolt, so various resin materials with a certain degree of strength are used. One example is polyacetal resin (POM resin).

[0025] (2) The regular hexagonal shape of the second member 21 is formed with a diagonal length La2, which corresponds to the diagonal length La1 of the rotation recess 5 of the first member 1, and the length La2 is formed slightly smaller than the length La1 so that the second member 21 fits exactly into the rotation recess 5 (Figure 1(a)).

[0026] (3) A plurality of second members 21 are prepared, each having the same base body 23 but different shapes of the bolt insertion portion 25. In this embodiment, the following four types are prepared according to the bolt head diameter (nut diameter) standards. (a) A bolt insertion portion 25 that is adjusted to a bolt nominal diameter M12 and has a diagonal length of L12 (Figure 1(a), Figures 3(1-a) to (1-c)), the width of the remaining part of the base 23 is D12. (b) The bolt insertion portion 25 is adapted to the bolt nominal diameter M10, and the diagonal length of the bolt insertion portion 25 is L10 (Figures 3(2-a) to (2-c)), and the width of the remaining part of the base 23 is D10. (c) The bolt insertion portion 25 is adapted to a bolt nominal diameter M8, and the diagonal length of the bolt insertion portion 25 is L08 (Figures 4(3-a) to (3-c)), and the width of the remaining part of the base 23 is D08. (d) The bolt insertion portion 25 is adapted to the bolt nominal diameter M6, and the diagonal length of the bolt insertion portion 25 is L06 (Figures 4(4-a) to (4-c)), and the width of the remaining part of the base 23 is D06.

[0027] (4) In the above, the larger the bolt nominal diameter, the larger the diagonal length. L06 <L08<L10<L12 and the width of the remaining part is D12 <D10<D08<D6 This becomes:

[0028] (5) Four types of second members 21 are provided (FIGS. 3 and 4), but it is sufficient to prepare at least two types depending on the site where they will be used.

[0029] (C) Use of jig 30 (Fig. 1)

[0030] (1) A second member 21 having a diagonal length of L12 for the bolt insertion portion 25 is used (FIG. 1(a)) to match the nominal diameter of the bolt to be used, for example, M12. The second member 21 is inserted into the rotation recess 5 of the first member 1, and screws (not shown) are driven into the screw holes 8, 8 to fix the second member 21 to the first member 1 to an extent that it will not come off (FIG. 1(b)). In this state, the jig 30 is configured.

[0031] (2) The mounting shaft 11 of the jig 30 is attached to the chuck of a rotary tool (such as an impact driver) 33, and the head 35 of an M12 tapping screw 35 is inserted into the bolt insertion portion 25. After that, the rotary tool 33 is rotated to drive the tapping screw 35 in, just like in an ordinary operation using the jig 30. In this case, in the case of a reserve diameter of M12 Depth H01 of the rotation recess 5 of the first member 1 = 6 mm Height Ha2 of the bolt insertion portion 25 of the second member 21 = 10 mm The rotation recess 5 and the bolt insertion portion 25 overlap, so that an extremely thin jig 30 can be configured compared to conventional ones (FIG. 1(b)). Therefore, there is no wobble in the rotation of the rotary tool 33, and work can be performed reliably.

[0032] (3) In addition, even if the tapping screw 35 is painted, the hexagonal surface of the head 36 is covered by the second member 21 and the end face is in contact with the protective sheet 9, so there is no risk that the paint on the tapping screw 35 will be damaged or peeled off by the jig 30. In addition, the depth H01 of the rotation recess 5 of the first member 1 and the thickness Ha2 of the base material of the second member 21 are H01 <Ha2 Since the other surface 24b of the second member 1 always protrudes from the other surface 4b of the first member (FIG. 1(b)), the head 36 of the tapping screw 35 does not come into contact with the first member 1 during work, and therefore there is no need to accurately visually check the position of the second member 21 (the position of the bolt insertion portion 35) during work, and the head 36 of the tapping screw 35 can be inserted into the bolt insertion portion 35. This more reliably prevents the paint on the tapping screw 35 from being damaged.

[0033] (4) When using bolts with different nominal diameters, the second member 21 can be easily removed from the rotation recess 5 (not shown) by loosening the screws in the screw holes 8 and pressing a rod-shaped object through the removal holes 10, 10 (usually, two diagonally positioned mounting holes 10, 10 are used at the same time). The first member 1 remains attached to the rotary tool 33. Next, a second member 21 such as M10, M08, or M06 is taken out according to the nominal diameter of the bolt to be used, and the second member 21 is fixed to the rotation recess 5 of the first member 1 in the same manner as described above (not shown). In this way, the work of attaching and detaching the second member 21 (the work of changing to a different nominal diameter) is also easy.

[0034] 2. Second embodiment (FIGS. 5 to 8)

[0035] The first embodiment is intended to be used with bolts and nuts having normal heads, while the second embodiment is intended to be used with bolts such as tall cap nuts. Depth H01 of the rotation recess 5 <H02 Thickness Ha2 of the base of the second member 21 <Hb2 However, the other configurations are the same.

[0036] (A) First member 1 (Figs. 5 and 6)

[0037] (1) The first member 1 is constructed by fixing the mounting shaft 11 to one surface 4a of a flat plate 3 that is a regular hexagon in plan view, and forming a regular hexagonal rotation recess 5 on the other surface (FIGS. 5(a) and 6). The rotation recess 5 that is a regular hexagon in plan view is formed at a depth H02 from the other surface 4b of the flat plate 1. The regular hexagon of the rotation recess 5 has a diagonal length Lb1.

[0038] (2) Similarly, screw holes 8, a protective sheet 8, and a removal hole 10 are formed.

[0039] (B) Second member 21 (FIGS. 1, 3, and 4)

[0040] (1) A regular hexagonal opening is formed in the base 23, which has a diagonal length Lb2 and a height Hb2, from one surface 24a to the other surface 24b at the center, to form the bolt insertion portion 25, thereby constituting the second member 21 (Figures 6(a), 7, and 8).

[0041] (2) The regular hexagonal outer shape of the second member 21 is formed with a diagonal length Lb2, which corresponds to the diagonal length Lb1 of the rotation recess 5 of the first member 1, and the length La2 is formed slightly smaller than the length La1 so that the second member 21 fits exactly into the rotation recess 5 (Figure 5(a)).

[0042] (3) As in the first embodiment, the second members 21 have the same base body 23 and four different shapes of the bolt insertion portion 25, as described below. However, the number of the second members 21 is arbitrary as long as there is more than one. (a) In the case where the bolt insertion portion 25 is adapted to the bolt nominal diameter M12 and the diagonal length of the bolt insertion portion 25 is L12 (Figure 5(a), Figures 7(1-a) to (1-c)), the width of the remaining part of the base 23 is D12. (b) The bolt insertion portion 25 is adapted to the bolt nominal diameter M10, and the diagonal length of the bolt insertion portion 25 is L10 (Figures 7(2-a) to (2-c)), and the width of the remaining part of the base 23 is D10. (c) The bolt insertion portion 25 is adapted to a bolt nominal diameter M8, and the diagonal length of the bolt insertion portion 25 is L08 (Figures 8(3-a) to (3-c)), and the width of the remaining part of the base 23 is D08. (d) The bolt insertion portion 25 is adapted to the bolt nominal diameter M6, and the diagonal length of the bolt insertion portion 25 is L06 (Figures 8(4-a) to (4-c)), and the width of the remaining part of the base 23 is D06.

[0043] (C) Use of jig 30 (Fig. 1)

[0044] (1) Same as the first embodiment. That is, a second member 21 having a diagonal length of L12 for the bolt insertion portion 25 is used (FIG. 5(a)) to match the nominal diameter of the cap nut 41 to be used, for example, M12, and the second member 21 is inserted into the rotation recess 5 of the first member 1, and screws (not shown) are driven into the screw holes 8, 8 to fix the second member 21 to the first member 1 to an extent that it will not come off (FIG. 5(b)). In this state, the jig 30 is configured.

[0045] (2) The mounting shaft 11 of the jig 30 is attached to the chuck of a rotary tool (such as an impact driver) 33, washers 39a and 39b are attached to the bolt shaft 38, and the head 35 of the M12 cap nut 41 is inserted into the bolt insertion portion 25 (FIG. 5(b)). The rest is the same as in the first embodiment. In this case, in the case of a reserve diameter of M12 Depth H02 of the rotation recess 5 of the first member 1 = 15 mm Height Hb2 of the bolt insertion portion 25 of the second member 21 = 16 mm The rotation recess 5 and the bolt insertion portion 25 overlap, so that, as in the first embodiment, it is possible to configure a jig 30 that is extremely thin compared to conventional ones (FIG. 5(b)). Moreover, compared to the conventional jig, the same excellent effects as those of the first embodiment can be achieved.

[0046] 3. Other Embodiments

[0047] (1) It is usually efficient to manufacture the second member 21 by cutting out a large plate-shaped resin material having a thickness of Ha2 in the first embodiment and a thickness of Hb2 in the second embodiment using a laser or the like, but this is not limited to this and any manufacturing method can be used. When using another manufacturing method, the bolt insertion portion 25 does not need to be formed by penetrating the base 23, and a lid 27 can be formed to form a recess (Figure 1(c) and Figure 5(c)).In this case, the depth of the recess is Ha2 (first embodiment) and Hb2 (second embodiment).

[0048] (2) In the above embodiment, the outer shape (outer peripheral locking portion 23a) of the base 23 of the second member 21 and the shape of the rotation recessed portion 5 of the first member 1 are both regular hexagons, but the shapes are arbitrary as long as they rotate together when the second member 21 is inserted into the rotation recessed portion 5 and rotates. However, considering the reliability of attachment and the stability of rotation, a regular hexagon, regular octagon, square, etc. are suitable.

[0049] (3) The shape of the bolt insertion portion 25 of the second member 21 can be selected appropriately according to the standards of the bolts to be used (not shown). [Explanation of symbols]

[0050] 1 First member 3. Flat plate (first member) 3a Outer circumference of the flat plate 4a One side of a flat plate 4b Other side of the flat plate 5 Rotation recess of flat plate 6 Bottom of rotating recess 7 Side wall of the rotating recess 8 screw holes 9 Protective Sheet 10 Ejection hole 11 Mounting shaft (first member) 12a Base end of mounting shaft 12b Tip of mounting shaft 21 Second member 23 Base of second member 23a: Outer periphery locking portion of base body 24a One side of the base 24b Other side of the base 25 Bolt insertion part of base 26 Cover for bolt insertion section (Fig. 1(c), Fig. 5(c)) 30 Jig 33 Rotary tools (impact drivers) 35 Tapping screws (bolts) 36 Tapping screw head 38 Bolt shaft 39a, 39b Washers 41 Cap nuts (bolts)

Claims

1. This is a jig that is attached to a rotary tool that rotates the heads of bolts, etc. A jig for a rotary tool, characterized in that it has an attachment shaft on one side that is attached to the rotary tool, and a bolt insertion portion on the other side into which the head of the bolt can be inserted, and is configured as follows. (1) The jig includes a first member made of steel and having the mounting shaft, and a second member made of a hard resin material and having a flat plate-shaped portion for receiving a bolt or the like. (2) The first member has a flat disc-shaped body to one side of which the mounting shaft is fixed, and the other side of the disc-shaped body has a rotation recess into which the polygonal outer peripheral locking portion of the second member is fitted. (3) It is constructed by combining one of the first members with a plurality of second members each having the same outer peripheral engaging portion but bolt insertion portions of different diameters. (4) The first member and the second member are configured so that, when the second member is fitted into the first member, the tip end surface of the second member protrudes from the tip end surface of the first member.

2. The jig for a rotary tool according to claim 1, characterized in that the first member has an extraction hole formed around the mounting shaft on one side of the disk where the mounting shaft is fixed, the extraction hole penetrating from the one side toward the rotation recess side.

3. When the depth from the opening edge to the bottom of the rotation recess of the first member is H1 and the thickness of the base of the second member is H2, H2>H1 2. The jig for a rotary tool according to claim 1, wherein:

4. 2. The jig for a rotary tool according to claim 1, characterized in that it is configured as follows. (1) In the second member, an opening is formed in the base from one side to the other, forming a bolt insertion portion. (2) In the first member, a protective sheet was attached to the bottom of the rotation recess.

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