JP5075720B2 - Lip part machining tool and lip part machining method - Google Patents

Description

  The present invention relates to a processing tool for a lip portion for processing a lip portion of a C-shaped steel material and a method for processing the lip portion.

A lightweight partition wall as a wall of a building is constructed by erecting a light-weight shaped steel material and erecting a wall material (for example, a gypsum board) so as to sandwich the light-weight shaped steel material. For the construction of the lightweight partition walls, C-shaped steel materials K and L as light-weight steel materials having a substantially C-shaped plan sectional view shown in FIGS. 6 (a) and 6 (b) are used. The C-type steel materials K and L are formed with openings S extending in the standing direction of the C-type steel materials K and L, and a pair of inwardly bent openings at both ends of the opening S. Lip portions Ka and La are formed. 6 (a), the lip portion Ka of the C-type steel material K is formed by being bent into a flat shape, while the lip of the C-type steel material L as shown in FIG. 6 (b). The portion La is formed by being bent in a curved shape (for example, Non-Patent Document 1). In Non-Patent Document 1, a lightweight steel material is described as “stud”.
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  By the way, in order to install the wiring device on the lightweight partition wall, a wiring box capable of accommodating the wiring device is attached to the lip portions Ka and La of the C-shaped steel materials K and L. That is, the wiring box is attached by screwing a screw penetrating the wiring box into the lip portions Ka and La of the C-type steel materials K and L. However, the C-type steel materials K and L are formed without considering the attachment of the wiring box to the lip portions Ka and La. In particular, when the lip portion La is curved as shown in FIG. 6B, if the screw N is screwed into a position deviated from the apex t of the lip portion La, it is shown in FIG. 6C. Thus, the wiring box 11 is attached in an inclined posture and in an unstable state. Therefore, in particular, in the case of the C-type steel material L, in order to attach the wiring box 11 to the lip portion La in a stable state, the screw N must be screwed into the apex t of the lip portion La, and this work is very It is difficult to.

  For this reason, when the wiring box 11 is attached to the C-shaped steel materials K and L, the tips of the lip portions Ka and La extending inwardly of the C-shaped steel materials K and L are bent outward in advance. It is conceivable to create a wide range of planar parts in the parts Ka and La. However, the above-described work requires gripping the tips of the lip portions Ka and La, and it is difficult to grip the tips of the lip portions Ka and La located inward with a commercially available tool such as a pliers, so that a flat part is desired. Can not be produced.

  The present invention has been made in view of the above-described conventional problems, and the object thereof is to process a lip portion that can easily create a flat and wide portion by bending a lip portion of a C-shaped steel material. The object is to provide a tool and a method for processing a lip portion.

In order to solve the above problems, the invention described in claim 1 has an opening extending in the standing direction, and the end of each side plate that becomes both sides of the opening is folded toward the back plate. A processing tool for a lip portion for processing the lip portion for screwing a fixture into the lip portion of a C-shaped steel material having a bent lip portion, and attaching the arrangement body, A sandwiching piece that can be inserted into the inside of the C-type steel material and that protrudes toward the opening portion that can be inserted into the space portion inside the lip portion in a state of being inserted inside the C-type steel material ; The sandwiching portion is integrated with a sandwiching portion that sandwiches the lip portion between two surfaces facing each other in the thickness direction of the lip portion by one sandwiching surface provided in the sandwiching piece and the other sandwiching surface facing the one sandwiching surface. And the lip portion by the clamping portion In lifting state, and summarized in that and a folding force applying unit that applies a force to bend outward side to the clamping portion from the inner side of the C-shaped steel the lip.

  According to a second aspect of the present invention, in the lip portion processing tool according to the first aspect, the bending force applying portion includes the lip portion in the state where the lip portion is clamped by the clamping portion. A projecting guide portion forming member that forms a guide portion on the lip portion that is screwed into the lip portion by being pierced into the lip portion when bent from the inner side to the outer side of the lip portion; The gist is that it is formed.

  According to a third aspect of the present invention, in the lip portion machining tool according to the first or second aspect, the arrangement body includes the attachment tool inserted into an attachment hole through which the attachment tool is inserted. The lip portion is provided with contact portions formed on both upper and lower sides of the mounting hole when the arrangement body is brought into contact with the lip portion, and the lip portion is formed by the clamping portion along the standing direction of the C-shaped steel material. The nipping length of is formed to be longer than the length of the abutting portion along the standing direction of the C-shaped steel material in a state in which the arrangement body is abutted against the lip portion. .

According to a fourth aspect of the present invention, there is provided an opening portion extending in the standing direction, and provided with a lip portion bent toward the back plate portion at the front end of each side plate portion serving as both sides of the opening portion. In order to attach an arrangement body by screwing a fixture into the lip portion of a steel mold material, the lip portion is processed by using a processing tool to process the lip portion, and the clamping portion provided in the processing tool Is inserted into the inside of the C-type steel material from the opening, and is formed so as to project toward the opening side in a state of being inserted into the space inside the lip portion and inside the C-type steel material included in the clamping portion. And sandwiching the lip portion by two surfaces facing from the thickness direction of the lip portion by means of one clamping surface of the clamping piece and the other clamping surface opposite to the one clamping surface, Grasping the bending force application part with which the clamping part is integrated, The bending force applying portion is operated in a state where the lip portion is held by the holding portion, and a force for bending the lip portion from the inner side to the outer side of the C-shaped steel material is applied to the holding portion. Thus, the gist is to bend the lip portion from the inner side to the outer side of the C-shaped steel material.

  According to the present invention, it is possible to easily create a planar and wide portion by bending a lip portion of a C-shaped steel material with a processing tool.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, a C-shaped steel material 10 constituting a lightweight partition wall (not shown) is a C-shaped steel made of a thin steel plate and having a substantially C-shaped plan sectional view, and a C-shaped steel is formed on one side thereof. An opening S extending in the standing direction of the steel material 10 is provided. Further, the C-type steel material 10 includes a back plate portion 10a opposite to the opening S and a pair of side plate portions 10b that are erected substantially vertically while sandwiching the back plate portion 10a. Furthermore, the lip | rip part 10c bent in hook shape (hook shape) toward the back plate part 10a is formed in the front-end | tip of each side plate part 10b used as the both sides of the opening part S of the C-shaped steel material 10. FIG. The lip portion 10c has a curved portion 10d in which both the inner and outer surfaces of the lip portion 10c are curved and a flat portion 10e in which both the inner and outer surfaces are flat. Note that the inner surface of the flat surface portion 10e and the inner surface of the side plate portion 10b face each other substantially in parallel with an interval A therebetween. Thereby, the space part Sa is formed inside the lip part 10c.

Next, the wiring box 11 attached to the C-type steel material 10 in order to install a wiring device (for example, a switch) on the lightweight partition wall will be described.
The wiring box 11 has a bottomed square box shape. Short side walls 12a and 12b are provided on both short sides of the bottom wall 12 which is rectangular in plan view, and long side walls 12c and 12d are provided on both long sides, respectively. A box opening Sb surrounded by the side walls 12a and 12b and the long side walls 12c and 12d is provided on one side. Further, the outer surface of the long side wall 12c protrudes with a constant thickness toward the outside of the long side wall 12c, and is attached as a contact portion having a rectangular shape in front view extending in the depth direction of the wiring box 11. Three pedestals 14 are formed. Each mounting base 14 is formed with two short hole (round hole) mounting holes 14 a penetrating the long side wall 12 c in the depth direction of the wiring box 11. When attaching the wiring box 11 to the C-type steel material 10 using screws N as fixtures, the mounting bases 14 are brought into contact with the lip portions 10c, and the positions where the screws N are to be screwed into the lip portions 10c, or screws The wiring box 11 is aligned so that the mounting hole 14a comes to the position of the hole formed in the lip portion 10c so that N is screwed. When the alignment is completed, the screw N is inserted into the mounting hole 14 a and the screw N is screwed into the lip portion 10 c to attach the wiring box 11 to the C-type steel material 10. In the present embodiment, among the three mounting bases 14, the mounting base 14 positioned in the middle particularly corresponds to the contact portion.

Next, the machining tool 20 will be described with reference to FIGS.
The processing tool 20 is a metal tool, and more specifically, a gripping portion 21 as a bending force applying portion having a rod shape, and fixed to one end side of the gripping portion 21 by a fixing screw D (integrated) And a block-shaped sandwiching body 22. The grip portion 21 is formed in a quadrangular prism shape having a rectangular shape in plan view, front view, and side view. Further, the length of the grip portion 21 in the long side direction (see arrow Y1 in FIG. 2 (a)) is formed long so that the worker can grip and easily apply force, and the worker can In a state where 21 is gripped, the grip portion 21 has a length that slightly protrudes from the palm of the operator. On the other hand, the length in the short side direction orthogonal to the long side direction of the gripping part 21 (see arrow Y2 in FIG. 2B) is such that it fits in the palm of the worker when the worker grips the gripping part 21. The length is shorter than the long side of the wiring box 11. Further, the length of the gripping portion 21 in the short side direction is formed to be slightly longer than the length along the short side direction of the mounting base 14 in the wiring box 11.

  As shown in FIG. 2A, the sandwiching body 22 has a shape in which a part on the side of the gripping portion 21 in the metal block body is cut out, and is formed in a substantially rectangular parallelepiped shape. 2C, the length of the holding body 22 along the short side direction of the gripping portion 21 is the same as the length of the gripping portion 21 in the short side direction, while FIG. As shown in b), the length of the holding body 22 along the long side direction of the gripping part 21 is much shorter than the length of the gripping part 21 in the long side direction. The length of the holding body 22 along the short side direction of the gripping part 21 is also formed to be slightly longer than the length along the short side direction of the mounting base 14 in the wiring box 11. Further, the length of the sandwiching body 22 in the thickness direction is slightly shorter than the length of the grip portion 21 in the thickness direction.

  As shown in FIG. 2A, a notch Q is formed on the gripping part 21 side of the sandwiching body 22. The notch Q is formed by notching the gripping part 21 side of the sandwiching body 22 over the entire short side direction of the gripping part 21. That is, the notch Q is not a tunnel-shaped space formed by cutting only a part of the holding body 22 on the gripping part 21 side along the long side direction of the gripping part 21, but the short side of the gripping part 21. It is the space part which penetrated the clamping body 22 in the direction. The length w1 in the thickness direction of the notch portion Q is formed to be slightly longer than the length in the thickness direction of the lip portion 10c of the C-shaped steel material 10, and the lip portion 10c is inserted into the notch portion Q. It is possible. Further, in the sandwiching body 22, a sandwiching piece 22 a is formed by a portion remaining by forming the notch portion Q. The length w2 of the sandwiching piece 22a along the thickness direction of the sandwiching body 22 is slightly shorter than the distance A between the inner surface of the flat surface portion 10e and the inner surface of the side plate portion 10b in the lip portion 10c. The clamping piece 22a can be inserted into the formed space portion Sa.

  The inner surface of the clamping piece 22a forms a first clamping surface 22b that clamps the lip portion 10c, while the side surface of the gripping portion 21 that faces the first clamping surface 22b forms a second clamping surface 21a. The first clamping surface 22b and the second clamping surface 21a face each other substantially in parallel. In the present embodiment, the first clamping surface 22b as one clamping surface included in the clamping piece 22a and the second clamping surface 21a as the other clamping surface facing the first clamping surface 22b are used to provide a lip portion. 10c is clamped from the thickness direction of the lip portion 10c. Therefore, the 2nd clamping surface 21a of the holding part 21 and the 1st clamping surface 22b of the clamping piece 22a become a clamping part which clamps the lip | rip part 10c by two opposing surfaces.

Next, a method for processing the C-shaped steel material 10 using the processing tool 20 will be described with reference to FIGS.
First, the operator specifies a position where the wiring box 11 is attached in the lip portion 10 c of the C-shaped steel material 10. At this time, when a hole into which the screw N is screwed is already formed in the lip portion 10c, a position where the hole is formed is a position where the wiring box 11 is attached. And the operator who specified the position which attaches the wiring box 11 inserts the clamping body 22 side of the processing tool 20 in the C-type steel material 10 from the opening part S of the C-type steel material 10, as shown to Fig.3 (a). Further, the clamping piece 22a is inserted into the space portion Sa inside the lip portion 10c, and the lip portion 10c is clamped by the first clamping surface 22b and the second clamping surface 21a from the thickness direction.

  Next, the operator grips the gripping portion 21, operates the gripping portion 21 to move the processing tool 20 in the direction indicated by the arrow, that is, the direction toward the side plate portion 10b where the lip portion 10c is formed, and It is rotated around the axis of the C-type steel material 10. Then, the point that is in contact with the corner on the opening side of the first clamping surface 22b and that is located at the approximate boundary between the curved portion 10d of the lip portion 10c and the flat portion 10e becomes the fulcrum R1, and the gripping portion 21 rotates. The force generated by the above is transmitted to the lip portion 10c through the clamping piece 22a using the lever principle. The lip portion 10c is bent outwardly toward the opening S with the fulcrum R1 as the center by the force.

  Then, the operator continues to rotate the gripping portion 21 and moves the lip portion 10c to a position substantially perpendicular to the side plate portion 10b on which the lip portion 10c is formed as shown in FIG. If it is bent outward toward the opening S side, the rotation of the gripping portion 21 is stopped and the processing tool 20 is taken out from the C-type steel material 10. As shown in FIG. 1, by this operation, the lip portion 10c bent toward the inside of the C-shaped steel material 10 can be folded outward toward the opening S side of the C-shaped steel material 10, and The lip portion 10c can be created in a planar manner. Note that the lip portion 10c is bent outwardly toward the opening S side of the C-shaped steel material 10 only at a portion sandwiched between the first sandwiching surface 22b and the second sandwiching surface 21a. Here, the clamping length of the lip portion 10c by the first clamping surface 22b and the second clamping surface 21a along the standing direction of the C-shaped steel material 10 is longer than the length of the mounting base 14 in the wiring box 11 in the short side direction. Is also getting longer. That is, the clamping length of the lip portion 10c by the first clamping surface 22b and the second clamping surface 21a along the standing direction of the C-shaped steel material 10 is C-type in a state where the long side wall 12c is in contact with the lip portion 10c. It is longer than the length of the mounting base 14 along the standing direction of the steel material 10. For this reason, the length in the standing direction of the lip portion 10c bent by one bending operation by the processing tool 20 is longer than the length along the short side direction of the mounting base 14 in the wiring box 11. .

  Next, the operator brings one of the plurality of mounting bases 14 formed in the wiring box 11 into contact with the lip portion 10c bent outward toward the opening S side of the C-shaped steel material 10. Position. Then, as shown in FIG. 3 (c), the operator inserts the screw N into the mounting hole 14 a, and further screws the screw N into the lip portion 10 c to attach the wiring box 11 to the C-type steel material 10. That is, by processing the lip portion 10c using the processing tool 20, a wide planar portion in contact with the wiring box 11 is created, so that the contact area of the lip portion 10c in contact with the wiring box 11 increases and the screw N This makes it possible to install the wiring box 11 more easily. The processing tool 20 of the present embodiment can also be applied to a C-shaped steel material K formed by bending a lip portion Ka into a flat shape as shown in FIG.

According to the above embodiment, the following effects can be obtained.
(1) The clamping body 22 side of the processing tool 20 is inserted into the C-type steel material 10 through the opening S of the C-type steel material 10, and the lip portion 10c is connected to the lip portion by the first clamping surface 22b and the second clamping surface 21a. It can be held from the thickness direction of 10c. Then, with the lip portion 10c sandwiched from the thickness direction of the lip portion 10c, the gripping portion 21 is rotated in the direction toward the side plate portion 10b where the lip portion 10c is formed and around the axis of the C-type steel material 10. By moving the lip portion 10c, a force for bending the lip portion 10c from the inner side to the outer side of the C-type steel material 10 is applied to the lip portion 10c. Thereby, the lip portion 10c of the C-shaped steel material 10 can be bent by the processing tool 20 to easily create a planar and wide portion.

  (2) The length w2 of the sandwiching piece 22a along the thickness direction of the sandwiching body 22 is slightly shorter than the distance A between the inner surface of the flat surface portion 10e and the inner surface of the side plate portion 10b in the lip portion 10c, and the inner side of the lip portion 10c. The sandwiching piece 22a can be inserted into the space portion Sa formed in. For this reason, by inserting the clamping piece 22a into the space portion Sa without shifting, the lip portion 10c is easily clamped by the first clamping surface 22b and the second clamping surface 21a, and the lip portion 10c is bent in a stable state. be able to.

  (3) The clamping length of the lip portion 10c by the first clamping surface 22b and the second clamping surface 21a along the standing direction of the C-shaped steel material 10 is the state in which the long side wall 12c is in contact with the lip portion 10c. It was formed so as to be longer than the length of the mounting base 14 along the standing direction of the C-type steel material 10. Thereby, the contact area which makes the mounting base 14 contact | abut to the bent lip | rip part 10c by one bending operation | work with the processing tool 20 is securable. Even if the screw N is screwed into the bent lip portion 10c at a position shifted from the position where the screw N is desired to be screwed, there is a margin in the length of the bent lip portion 10c. Therefore, it is not necessary to perform the bending operation of the lip portion 10c with the processing tool 20 again.

  (4) Since the grip portion 21 has a quadrangular prism shape, the second clamping surface 21a is planar. In addition, the first clamping surface 22b and the second clamping surface 21a facing the first clamping surface 22b are formed so as to face each other substantially in parallel. For this reason, the processing tool 20 can be bent outward toward the opening S side in a substantially flat state without unevenness of the lip portion 10c itself.

  (5) When the lip portion 10c is bent outward toward the opening S side of the C-shaped steel material 10 using the processing tool 20, the fulcrum is located at the approximate boundary between the curved portion 10d of the lip portion 10c and the flat portion 10e. The lip portion 10c is bent outward of the C-type steel material 10 by the force generated by the rotation of the grip portion 21 with R1 as the center. Thus, the lever principle can be used to fold the lip portion 10c outward toward the opening S side of the C-type steel material 10 with a small force around the fulcrum R1. Moreover, since the flat part 10e of the lip part 10c located inward of the C-shaped steel material 10 is bent outward toward the opening S side with respect to the fulcrum R1, the longer the distance of the flat part 10e from the fulcrum R1 is, A wide contact area in contact with the wiring box 11 is ensured.

  (6) The clamping body 22 is fixed to one end side of the grip portion 21 with a fixing screw D. Thereby, it can produce at low cost compared with the case where the metal block body is cut out and the processing tool 20 is produced.

  (7) Even if it is C type steel material in which the lip part of various shapes was formed, if the space part is formed inside the lip part, the lip part can be easily bent using the processing tool 20 In addition, a wide site can be easily created.

(Second Embodiment)
Next, a second embodiment embodying the present invention will be described with reference to FIGS. The processing tool 20 according to the present embodiment is different from the first embodiment in that the processing tool 20 includes a protrusion 25 as a guide portion forming member that forms a guide portion for screwing the screw N into the lip portion 10c. In addition, since the processing method of the processing tool 20 and the lip portion 10c in the second embodiment is the same as that of the first embodiment except that the projection 25 is formed on the processing tool 20, the same parts are described. Detailed description thereof is omitted.

  As shown in FIG. 4, the grip portion 21 of the processing tool 20 is formed with a truncated cone-shaped protrusion 25 that tapers from the proximal end toward the distal end. The protrusion 25 is erected on the side surface of the grip portion 21 and on the center line of the short side of the grip portion 21. The length of the protrusion 25 in the erection direction is the first clamping surface 22b. And slightly shorter than the length w1 between the second clamping surface 21a. The diameter of the tip end surface 25 a of the protrusion 25 and the diameter of the base end face 25 b of the protrusion 25 are shorter than the diameter of the screw N. In addition, the standing position of the protrusion 25 is not in the notch Q formed in the sandwiching body 22, that is, a position that does not face the first sandwiching surface 22b. Further, when the lip portion 10c is sandwiched from the thickness direction between the second clamping surface 21a and the first clamping surface 22b, the projection 25 has a part of the tip end surface 25a of the projection 25 on the outer surface of the curved portion 10d of the lip portion 10c. It is formed in a position that touches.

Next, a method for processing the C-shaped steel material 10 using the processing tool 20 will be described with reference to FIGS.
As shown in FIG. 5 (a), the operator can place the lip portion 10c in the thickness direction of the lip portion 10c by the second clamping surface 21a and the first clamping surface 22b, as in the case of the work content in the first embodiment described above. And the gripper 21 is operated to rotate the processing tool 20 in the direction indicated by the arrow. Then, the point located at the approximate boundary between the curved portion 10d and the flat portion 10e of the lip portion 10c becomes the fulcrum R1, and the lip portion 10c is bent outward toward the opening S side with the fulcrum R1 as the center. In addition, a point on the outer surface of the curved portion 10d of the lip portion 10c that is in contact with the projection 25 becomes a fulcrum R2, and the force generated by the rotation of the grip portion 21 is projected from the grip portion 21 using this principle. As shown in FIG. 5B, a hole G is formed as a guide portion for screwing the screw N into the lip portion 10c. When the screw N is screwed into the lip portion 10c in order to attach the wiring box 11 to the C-type steel material 10, since the hole G is formed in the lip portion 10c, the tip of the screw N is caught in the hole G. The screw N can be screwed in smoothly and quickly. The processing tool 20 of the present embodiment can also be applied to a C-shaped steel material K formed by bending a lip portion Ka into a flat shape as shown in FIG.

Therefore, according to this embodiment, in addition to the effects (1) to (7) of the first embodiment, the following effects can be obtained.
(8) When the lip portion 10c is bent from the inner side to the outer side of the C-type steel material 10 with the lip portion 10c being clamped by the first clamping surface 22b and the second clamping surface 21a, the lip portion 10c By piercing, the grip portion 21 was formed with a protrusion 25 for forming a hole G in the lip portion 10c for screwing the screw N into the lip portion 10c. Thus, the lip portion 10c of the C-shaped steel material 10 can be bent using the processing tool 20, and a hole G can be formed in addition to being able to easily create a planar and wide portion. That is, since the hole G can be formed simultaneously with the flattening and widening of the lip portion 10c, the working efficiency is improved as compared with the case where the bending of the lip portion 10c and the formation of the hole G are performed separately.

In addition, you may change the said embodiment as follows.
In each embodiment, the length of the holding body 22 along the short side direction of the gripping part 21 is not limited to the same length as the length of the gripping part 21 in the short side direction, and the short side direction of the gripping part 21 The length of the sandwiching body 22 along the length may be much longer than the length of the grip portion 21 in the short side direction. For example, when the length of the holding body 22 along the short side direction of the gripping portion 21 is set to be substantially the same as the long side of the wiring box 11, the lip portion 10c is bent many times. In addition, it is possible to ensure a wide and flat contact area in contact with the wiring box 11 at a time.

  In each embodiment, the length of the clamping body 22 along the short side direction of the grip portion 21 may be shorter than the length along the short side direction of the mounting base 14 in the wiring box 11. In this case, when the lip portion 10 c is bent by the processing tool 20, the length of the bent lip portion 10 c in the standing direction of the C-shaped steel material 10 is longer than the length along the short side direction of the mounting base 14. Can be done multiple times.

In the second embodiment, the protrusion 25 is not limited to a truncated cone shape, and may be a pointed shape, for example.
In each embodiment, the length w1 between the first clamping surface 22b and the second clamping surface 21a may be adjusted with the fixing screw D according to the thickness of the lip portion 10c to be clamped. Specifically, the sandwiching piece 22a is inserted into a space Sa formed inside the lip portion 10c, and the length between the first sandwiching surface 22b and the second sandwiching surface 21a is set in accordance with the width of the lip portion 10c. Adjustment is performed by tightening or loosening the fixing screw D provided to adjust the length w1.

(Circle) in each embodiment, the 2nd clamping surface 21a may not be planar, and may curve according to the shape of the lip | rip part 10c.
In each embodiment, the length of the sandwiching piece 22a in the thickness direction of the sandwiching body 22 does not need to be slightly shorter than the space portion Sa formed inside the lip portion 10c, and the first sandwiching surface Any length may be used as long as it is narrower than the distance A which is the distance between 22b and the second clamping surface 21a.

  In each embodiment, the length of the sandwiching piece 22a in the thickness direction of the sandwiching body 22 is the same length as the space portion Sa formed inside the lip portion 10c, and the sandwiching piece 22a is press-fitted into the space portion Sa. Anyway.

  In each embodiment, a grip portion may be provided so that the grip portion 21 can be easily gripped. By doing in this way, it becomes easy to apply force further to the holding part 21 as a bending force provision part.

In each embodiment, the gripping portion 21 and the sandwiching body 22 may be integrally formed by cutting out the metal.
In each embodiment, the clamping body 22 may be appropriately replaced according to the bent shape of the lip portion 10c. By doing in this way, even if it is C type steel material 10 which has lip part 10c of what shape, if space is formed between lip part 10c and side plate part 10b, according to the shape The lip portion 10c of the C-shaped steel material 10 having any shape can be processed by simply exchanging the holding body 22.

  In each embodiment, a saddle that supports a long object such as a cable or a conduit to the C-type steel material 10, a box fixture that fixes the wiring box 11 to the C-type steel material 10, or a concrete panel to the C-type steel material 10 In order to attach an arrangement body such as a panel fixing tool to be fixed to the C-type steel material 10, the processing tool 20 may be used.

Next, a technical idea that can be grasped from the above embodiment and another example will be added below.
(B) The other clamping surface constituting the clamping part is formed in a planar shape by the side surface of the bending force application part. Machining tools.

  (B) The length of the gripping part is formed longer than the palm of the operator, and any one of claims 1 to 3 and the technical idea (b) The described machining tool.

The perspective view which shows C-type steel materials and a wiring box. (A) is a front view which shows a processing tool, (b) is a top view which shows a processing tool, (c) is a side view which shows a processing tool. (A) is sectional drawing which shows the aspect which clamped the lip | rip part with the clamping part of the processing tool, (b) is sectional drawing which shows the aspect which bent the lip | rip part, (c) is C-type steel material of a wiring box Sectional drawing which shows the attachment state of. The front view which shows the processing tool in 2nd Embodiment. (A) is sectional drawing which shows the aspect which clamped the lip | rip part with the clamping part of the processing tool, (b) is sectional drawing which shows the aspect which the protrusion was stuck in the aspect which bent the lip | rip part, and a lip | rip part. (A), (b) is sectional drawing of C-type steel materials in background art. (C) is sectional drawing which shows the attachment state to the C-type steel material of the wiring box in background art.

Explanation of symbols

  A ... interval, Q ... notch, R1, R2 ... fulcrum, Sa ... space part, 10 ... C-type steel, 10c ... lip part, 10d ... curved part of lip part, 10e ... planar part of lip part, 11 ... wiring Box, 20 ... Processing tool, 21 ... Gripping part, 21a ... Second clamping surface as the other clamping surface, 22 ... Clamping body, 22a ... Clamping piece, 22b ... First clamping surface as one clamping surface, 25 ... Protrusion.

Claims (4)

A fixture on the lip portion of the C-type steel material having an opening portion extending in the standing direction, and having a lip portion bent toward the back plate portion at the front end of each side plate portion serving as both sides of the opening portion Is a lip portion processing tool for processing the lip portion in order to attach the arrangement body by screwing,
Clamping formed so as to protrude from the opening to the inside of the C-type steel material and to the opening side that can be inserted into the space inside the lip portion in a state of being inserted inside the C-type steel material A sandwiching portion that has a piece, and sandwiches the lip portion between two opposing surfaces from the thickness direction of the lip portion, with one sandwiching surface provided in the sandwiching piece and the other sandwiching surface facing the one sandwiching surface;
The clamping part is integrated, and a force is applied to the clamping part to bend the lip part from the inner side to the outer side of the C-shaped steel material in a state where the lip part is clamped by the clamping part. And a bending force imparting portion. A lip portion machining tool.   When the lip portion is bent from the inner side to the outer side of the C-shaped steel material in a state where the lip portion is held by the holding portion, the bending force applying portion is pierced by the lip portion. The lip portion machining tool according to claim 1, wherein a protruding guide portion forming member is formed on the lip portion to form a guide portion for screwing the fixture into the lip portion. The arrangement body is formed on both upper and lower sides of the attachment hole when the attachment tool is inserted into an attachment hole through which the attachment tool is inserted and the arrangement body is brought into contact with the lip portion. Department,
The clamping length of the lip portion by the clamping portion along the standing direction of the C-type steel material is along the standing direction of the C-type steel material in a state where the arrangement body is in contact with the lip portion. The lip portion machining tool according to claim 1, wherein the lip portion machining tool is formed longer than a length of the contact portion. A fixture on the lip portion of the C-type steel material having an opening portion extending in the standing direction, and having a lip portion bent toward the back plate portion at the front end of each side plate portion serving as both sides of the opening portion In order to attach the arrangement body by screwing in, the processing of the lip portion, using a processing tool, a processing method of the lip portion,
Wherein the holding portion to which the machining tool is provided, is inserted from the opening on the inside of the C-type steel, in the state inserted into the inside of the C-shaped steel in which the clamping part has in the space of the inside of the lip portion A clamping piece formed to protrude toward the opening is inserted, and the lip portion is opposed in the thickness direction of the lip portion by one clamping surface provided on the clamping piece and the other clamping surface facing the one clamping surface. Sandwiched between two sides,
The bending force applying portion integrated with the holding portion is gripped, and the bending force applying portion is operated in a state where the lip portion is held by the holding portion, so that the lip portion is inward of the C-type steel material. A method of processing a lip portion, wherein a force for bending toward the outer side is applied to the holding portion, and the lip portion is bent toward the outer side from the inner side of the C-shaped steel material.

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