JP2014050866A - Bending work tool of metal rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bending work tool of a metal rod capable of stably and surely bending a rain gutter support metal fitting.SOLUTION: Two metal plates are closely adjacently arranged and fixed, and a recessed part 16 is formed on the upper side of both metal plates, and a pair of support shafts 14a and 14c penetrating through both metal plates are provided on both sides of the recessed part 16, and the metal rod is processed to be curved in a recess shape by striking the metal rod from the upper side of the metal rod 4 in a state of placing the metal rod 4 inserted between both metal plates on the pair of support shafts. A stud 18 is arranged between both metal plates in the recessed part 16, and a fitting groove 18c is provided for restricting bending of the metal rod 4 by allowing an under surface 4" of the metal rod 4 to abut on an upper end part of the stud 18 in striking, and the stud 18 can be lifted in the vertical direction in the recessed paret 16. A height of the fitting groove 18c in the recessed part 16 can be set at a plurality of stages.

Description

  The present invention relates to a metal rod bending tool for bending a metal rod such as a support arm of a rain rod support bracket for supporting a rain bag under an eave such as a house according to the situation at the site. .

  Conventionally, as shown in FIG. 12, a rain gutter support fitting 1 for a house is linearly formed laterally from the arcuate gutter support portion 3 for supporting the gutter 2 and the center of the back surface of the support portion 3. The support arm 4 is formed to be extended to the support arm 4.

  When such a gutter 2 is fixed to the eaves 7 under the eaves 7, the support arm 4 of the gutter support bracket 1 is set on the site according to the position of the rafter 6, the installation position of the gutter 2, etc. Then, a curved portion C is formed by bending at a predetermined angle in the direction of arrow A, and the tip 4 'of the support arm 4 is fixed to the side surface of the rafter 6 so that the gutter 2 is attached to the eave girder 5 below the eaves. 8 was fixed along.

  Further, as shown in FIG. 13, after the support arm 4 is once bent in the direction of arrow A as described above in accordance with the position of the rafter 6 at the site, the tip 4 ′ is further moved in the reverse direction (arrow It may be necessary to form the curved portion C by bending in the (B direction).

  As an instrument for bending the rain gutter support bracket 1 as described above, an instrument as shown in, for example, Patent Document 1 has been proposed. This instrument has a configuration in which the support arm 4 of the rain gutter support fitting 1 is placed in the groove of the recess of the instrument and the support arm 4 is bent by hitting it with a hammer or the like (see Patent Document 1, FIG. 4, etc.). .

JP 9-228596 A

  By the way, since the instrument of the above-mentioned Patent Document 1 is configured such that the part to be processed is hit with a hammer from above the support arm 4 in a state where the support arm 4 of the gutter support fitting 1 is slightly inserted into the shallow groove of the instrument. When the arm 4 is struck, the support arm 4 vibrates up and down due to the impact, and as a result, the support arm 4 easily disengages from the groove and out of the groove, making it difficult to perform accurate bending. It was.

  In addition, since the degree of bending depends on the tapping force of the operator, skill is required when bending a large number of gutter support brackets at a certain angle, and therefore, regardless of the skill level of the operator. Development of a processing tool that can be bent at a certain angle is desired.

  The present invention has been made in view of the above-described conventional problems, and an object thereof is to provide a metal rod bending tool capable of stably and reliably bending a rain gutter support fitting or the like.

  Another object of the present invention is to provide a metal rod bending tool capable of easily bending a metal rod regardless of the skill level of the operator.

  Another object of the present invention is to provide a metal bowl bending tool having a strong structure that can withstand metal hammering.

In order to achieve the above object, the present invention
First, two metal plates are arranged close to each other, a groove is formed around the two metal plates to fix both metal plates, and a concave portion is formed from the upper side of the two metal plates toward the center of the two metal plates. A pair of support shafts that pass through the groove perpendicular to both the metal plates are provided on both sides of the recess and above the bottom of the recess, and are inserted between the metal plates from the groove. Are placed on the pair of support shafts, and the metal scissors are bent into a concave shape by striking the metal scissors from above the metal scissors in the recess. A stopper is disposed between the metal plates, and an upper end portion of the stopper is provided with a fitting groove for restricting the bending of the metal rod by contacting the lower surface of the metal rod at the time of tapping, between the metal plates. The stopper can be moved up and down in the recess, Constituted by bending tool metal rod, characterized in that the serial recess is obtained by configured to be able to set the height of the fitting groove in a plurality of stages.

  The recess may be constituted by a first recess (16). The pair of support shafts can be constituted by spacers (14a, 14c) in which screws (15a, 15c) and female screws (14 ') are formed and the screws are screwed in, for example. The bottom of the concave portion refers to, for example, a portion of the central facing portion (16 ') of the left and right inclined portions (16a, 16b) of the first concave portion (16). The metal fence is, for example, the support arm (4) of the rain gutter support fitting (1). If comprised in this way, the said processing tool will be hold | gripped with one hand, the said metal scissors will be mounted on the said support shaft, and the metal scissors in the said recessed part will be hit with the hammer etc. which were held in the other hand from the upper part. Thus, the metal rod can be bent into a concave shape until the lower surface of the metal rod hits the fitting groove of the stopper. At this time, since the degree of bending of the metal rod is determined by the position of the fitting groove, the metal fitting can be set in a plurality of stages by raising and lowering the stopper in the recess. The degree of curling of the scissors can be adjusted, and a metal scissor having a curved portion with a fixed shape can be easily processed and formed regardless of the skill level of the operator.

  Second, a plurality of position adjustment holes are provided in the vertical direction in the metal plate in the vicinity of the recess, and a through hole is provided in the fastener, and the through hole and any of the position adjustment holes are aligned. The metal rod bending tool according to the first aspect, wherein the pin is inserted into the through-hole and the position adjusting hole in a state where the stopper is fixed at a predetermined height position. Consists of.

  The pin can be constituted by a position adjusting pin (22). If comprised in this way, since the position adjustment of the said fastener can be performed easily, according to the situation of the field, the curved part of a predetermined shape (bending depth), regardless of the skill level of the operator, Many can be easily formed.

  Third, a pair of fixing screw holes is provided in the metal plate so as to correspond to the metal rod placed on the support shaft in the vicinity of the pair of support shafts. A screw is screwed into each fixing screw hole from the surface side of the screw, and the tip of the screw is brought into contact with the metal rod, so that the metal rod can be temporarily fixed. It is comprised by the bending tool of the metal cage | basket of the said 1st or 2 characterized by the above-mentioned.

  The fixing screw hole can be constituted by a fixing screw hole (22a, 22b). The screw can be constituted by, for example, a butterfly screw (23a, 23b). If comprised in this way, in the state which mounted the said metal rod on a pair of support shaft, the said screw can be screwed together in a screw hole for fixation, and a metal rod can be temporarily fixed by the said screw. Therefore, when the metal hammer is struck with a hammer or the like, the metal hammer can be prevented from being ramped up, and the bending force can be applied to the metal hammer with certainty and the bending can be accurately performed.

  4thly, it comprises the metal rod bending processing tool in any one of said 1st-3rd which fixedly provided the guide block which guides the raising / lowering operation | movement of the up-down direction of the said metal fitting inside the said metal plate. Is done.

  If comprised in this way, a fastener can be raised / lowered smoothly.

  Fifth, a second recess is formed from the side adjacent to the upper side where the recess of the metal plate is formed toward the center of the metal plate, and on both sides of the second recess, the second In a state where a pair of support shafts that pass through the groove perpendicular to the two metal plates are provided at a position on the side of the metal plate from the bottom of the two concave portions, and the second concave portion is positioned upward. The metal rod inserted between the metal plates from the groove is placed on the pair of support shafts, and in this state, the metal rod is beaten from the upper side of the metal rod in the second recess. It is comprised by the bending tool of the metal cage | basket in any one of the said 1st-4th comprised so that the said metal cage | basket could be curved in a concave shape.

  The pair of support shafts can be constituted by spacers (14d, 14e) in which screws (15d, 15e) and female screws (14 ') are formed, and the screws are screwed in, for example. The bottom of the recess refers to the common vertical side (17c) of the twelfth recess. By using the second concave portion, it is possible to easily perform operations such as forming a curved portion once in the concave portion (16) in the metal bowl and further bending the tip portion in the reverse direction by the second concave portion. Can do.

  Sixth, in the vicinity of the pair of support shafts in the second recess, on the metal plates on both sides of the second recess so as to correspond to the metal rods placed on these support shafts A pair of fixing screw holes are penetrated, screws are screwed into the fixing screw holes from the surface side of the metal plate, and the tips of the screws are brought into contact with the metal rods, whereby the metal rods It is comprised so that it can temporarily fix, It is comprised by the bending tool of the metal cage | basket of the said 5th characterized by the above-mentioned.

  The fixing screw hole can be constituted by a fixing screw hole (22c, 22d). The screw can be constituted by, for example, a butterfly screw (23c, 23d). With this configuration, in the second recess, the metal rod is placed on the pair of support shafts, and the screw is screwed into the fixing screw hole to temporarily fix the metal rod with the screw. it can. Therefore, when the metal hammer is struck with a hammer or the like, the metal hammer can be prevented from being ramped up, and the bending force can be applied to the metal hammer with certainty and the bending can be accurately performed.

  Seventh, the two metal plates are constituted by a front plate and a back plate, and the front plate and the back plate are provided with a plurality of holes communicating with both plates, and screws are inserted into the holes. The front plate and the rear plate are screwed and fixed with the screws, and ring-shaped spacers are provided between the front plate and the rear plate corresponding to the holes. A screw is formed, and each of the screws is screwed into the spacer from the hole of the front plate and screwed and fixed to the hole of the back plate. It is comprised with the bending tool of the metal cage | basket in any one of.

  The hole of the surface plate can be constituted by, for example, counterbore holes (through holes) (13a to 13f). The hole of the back plate can be constituted by a screw hole (13a 'to 13f') in which a female screw is cut, for example. The said spacer can be comprised by spacer (14a-14f). If comprised in this way, since the said screw | thread (15a-15f) is screwed together with the said spacer via the hole of the said surface plate, and is screwed with the hole of the back plate, the front plate and the back plate are firmly fixed. Can do.

  Eighth, the support shaft includes the spacer and the screw that is screwed into the spacer through the hole in the front plate and is threaded into the hole in the back plate through the spacer. It is comprised with the bending tool of the metal cage | basket of the said 7th.

  If comprised in this way, since the support shaft is comprised by the screw screwed in to the spacer, the spacer as a support shaft can be fixed and the strong support shaft which can also endure even the metal hammering can be comprised. .

  As described above, according to the present invention, the degree of bending of the metal rod can be easily adjusted depending on the position of the stopper metal, and the bending portion adapted to the situation in the field can be obtained regardless of the skill level of the operator. It is possible to stably and easily form the metal cage having the same.

  In addition, when the metal hammer is struck with a hammer or the like, the metal hammer can be prevented from being ramped up, and the metal hammer can be bent by accurately applying a force in the bending direction to the metal hammer.

  Further, by using the second concave portion, it is possible to easily perform an operation such as once forming a curved portion in the metal rod and then further bending the tip portion in the reverse direction.

  Further, the front plate and the back plate can be firmly fixed by screwing the screws into the spacers.

  In addition, since the support shaft is configured by screws or the like screwed into the spacer, it is possible to configure a strong support shaft that can withstand even the metal hammer.

1 is a perspective view of a metal rod bending tool according to the present invention. It is a disassembled perspective view of a processing tool same as the above. It is an exploded view of a processing tool same as the above. It is a front view which shows the state which bends a metal punch with a processing tool same as the above. It is a front view which shows the state which bends a metal punch with a processing tool same as the above. (A) is a front view which shows the state which bends a metal punch with a processing tool same as the above, (b) is a substantially center longitudinal cross-sectional view of (a). It is a front view which shows the state which bends a metal punch in the 2nd recessed part of a processing tool same as the above. It is a front view which shows the state which bends a metal punch in the 2nd recessed part of a processing tool same as the above. 4A is a cross-sectional view taken along line XX in FIG. 4, FIG. 4B is a vertical cross-sectional view near the spacer of the processing tool, and FIG. 4C is a vertical cross-sectional view near the butterfly screw of the processing tool. It is a front view of the metal scissors bent by the processing tool same as the above. It is a front view of the metal scissors bent by the processing tool same as the above. It is a side view of the eaves bottom vicinity which shows the attachment state of the rain gutter support metal fitting as a metal gutter. It is a side view of the eaves bottom vicinity which shows the attachment state of the rain gutter support metal fitting as a metal gutter.

  Hereinafter, the metal rod bending apparatus according to the present invention will be described in detail.

  In the present invention, the metal rod to be bent is a support arm 4 of a rain gutter support fitting 1 as shown in FIG. This support arm 4 is a strip-shaped metal rod having a width N1 of about 11 mm and a thickness N2 of about 2 mm (see FIG. 9C). As shown in FIG. 10, the metal rod is parallel to the width direction (in the direction of arrow A). ) To bend.

  As shown in FIGS. 1 to 3, the metal scissor bending tool 10 according to the present invention is composed of a front plate 11 and a back plate 12 having the same shape made of a metal plate (the thickness of both plates is 3 mm, for example). ) The front plate 11 and the back plate 12 are aligned with the shape of the front and back surfaces, and both plates are attached with a plurality of screws 15a to 15f with a constant separation width T by ring-shaped spacers 14a to 14f. It is configured by fixing. An interval formed by the separation width T is referred to as a groove T ′. Therefore, the processing tool 10 is formed with the groove T ′ over the entire circumference.

  In addition, in FIG. 1, the upper and lower sides and the left and right direction of the state which turned the front plate 11 side to the front, the back of the back plate 12 side, and the front to back are defined as an up-down direction and a left-right direction.

  As shown in FIG. 1 and FIG. 2, the overall shape of the front surface plate 11 and the back surface plate 12 is the same, and a first concave portion (concave portion) 16 for bending is formed on the upper side from the upper side (upper side) (lower side of the metal plate). The second concave portions 17 for bending are formed on the left side from the left side toward the right side, respectively.

  Moreover, the cut | disconnecting part 25 cut | disconnected in the diagonal direction is formed under the right side of the said surface board 11 and the back surface board 12, and the weight reduction of the said processing tool 10 is achieved.

  The left and right inclined portions 16a and 16b of the first concave portion 16 have a relatively gentle downward inclination angle θ1 degree, and a centrally facing portion (bottom portion) 16 ′ of the inclined portions 16a and 16b has a predetermined vertical downward direction. The central vertical groove portion 16c cut into the length is further cut continuously.

  A second recess 17 is formed from the side adjacent to (orthogonal to) the upper side of the metal plate where the first recess 16 is formed toward the center of the metal plate. The upper and lower inclined portions 17a and 17b of the second concave portion 17 are directed in the center direction (rightward direction) of the front and back plates 11 and 12 from the inclination angle θ1 of the left and right inclined portions 16a and 16b of the first concave portion 16. On the other hand, it is cut and formed at a deep inclination angle θ2 degrees (> θ1 degree), and the lowermost part is connected by a common vertical side (bottom) 17c.

  The second concave portion 17 has a slightly lower left plate portion 11b, 12b which is a plate portion on the lower inclined portion 17a side, compared to the left upper plate portion 11a, 12a which is a plate portion on the upper inclined portion 17b side. Projecting in the left direction, lower left projecting portions 11b 'and 12b' are formed.

  Note that the right upper plate portion continuing to the inclined portion 16b of the first recess 16 is referred to as the right upper plate portions 11c and 12c.

  The front plate 11 and the back plate 12 have six through holes 13 a to 13 f formed on the plate surface of the front plate 11, and six screw holes 13 a in which female screws are provided at the same position of the back plate 12. 'To 13f' are formed through, these holes 13a to 13f, 13a 'to 13f' are opposed to each other, and through the spacers 14a to 14f from the surface 11 'side of the surface plate 11 through the through holes 13a to 13f. Screws 15a to 15f (see FIG. 9B) are screwed into the screw holes 13a 'to 13f' of the back plate 12, respectively, so that the separation width T by the spacers 14a to 14f is reduced. Thus, the front plate 11 and the back plate 12 can be fixed.

  The through holes 13a to 13f on the surface plate 11 side may be formed by screwing female screws, but when the screws 15a to 15f are constituted by flat screws, the through holes 13a to 13f are formed by female screws. Conical counterbored holes 13a to 13f (conical surfaces 13 ') corresponding to the heads of the countersunk screws (see FIGS. 2, 3, and 9B), and the screws 15a to 15f are inserted into the counterbored holes 13a to 13f. Are inserted into the spacers 14a to 14f, and the tips of the screws 15a to 15f passing through the spacers 14a to 14f are screwed into the screw holes 13a 'to 13f' of the back plate 12. By combining, the front plate 11 and the back plate 12 may be fixed (see FIG. 9B).

  Each of the spacers 14a to 14f has a ring shape (columnar shape), and a female screw 14 'into which the screws 15a to 15f can be screwed is formed on the inner surface (see FIGS. 2 and 9B). . Accordingly, the front plate 11 and the back plate 12 are fixed by the screws 15a to 15f, but the screws 15a to 15f are screwed into the spacers 14a to 14f. 12 can be firmly fixed.

  That is, ring-shaped spacers 14a to 14f are provided between the front plate 11 and the back plate 12 corresponding to the positions of the through holes 13a to 13f and screw holes 13a 'to 13f'. Is formed with a female screw 14 ′, and the screws 15 a to 15 f are screwed into the spacers 14 a to 14 f from the through holes 13 a to 13 f of the surface plate 11 and the screw holes 13 a ′ of the back plate 12. To 13f '. By screwing the screws 15a to 15f into the spacers 14a to 14f in this way, the front plate 11 and the back plate 12 can be firmly fixed.

  The through holes 13a and 13c and the screw holes 13a ′ and 13c ′ are respectively provided on plate surfaces corresponding to substantially central positions of the inclined surfaces of the inclined portions 16b and 16a of the first recess 16, and the through holes Spacers 14a and 14c positioned in the holes 13a and 13c (screw holes 13a ′ and 13c ′) are provided so as to be positioned on the same reference line L1 with respect to the first recess 16. That is, a pair of support shafts (screws 15a) penetrating the groove T 'perpendicular to both the metal plates 11, 12 on both sides of the first recess 16 and above the bottom 16' of the recess 16. 15c and spacers 14a, 14c). Therefore, the support shaft is inserted through the spacers 14a and 14c and the through holes 13a and 13c, screwed into the spacers 14a and 14c, penetrates the spacers 14a and 14c, and the screw holes 13a 'and 13c. And screws 15a and 15c screwed into '.

  Therefore, in a state where two points of the support arm (metal rod) 4 of the rain gutter support fitting 1 described later are supported on the spacers 14a, 14c located in the through holes 13a, 13c (screw holes 13a ′, 13c ′) ( 4), the support arm 4 can be bent downward by hitting the support arm 4 downward (arrow P direction) with a hammer or the like from the upper part of the support arm 4. .

  The through holes 13d and 13e (screw holes 13d 'and 13e') are respectively provided on plate surfaces corresponding to the inclined surfaces of the inclined portions 17a and 17b of the second recess 17, and the through holes 13d and 13e are respectively provided. The spacers 14d and 14e located in the second recess 17 are provided on the same reference line L2 with respect to the second recess 17 (see FIG. 1). That is, both sides of the second concave portion 17 and on the left side of the bottom 17c of the concave portion 17, that is, the outer edge direction of the metal plate (the side on which the second concave portion 17 is provided) (the upper position in FIG. 8). ) Is provided with a pair of support shafts (screws 15d and 15e, spacers 14d and 14e) that pass through the groove T 'perpendicular to the metal plates 11 and 12. That is, the support shaft is inserted through the spacers 14d and 14e and the through holes 13d and 13e, is screwed into the spacers 14d and 14e, passes through the spacers 14d and 14e, and the screw holes 13d 'and 13e. And screws 15d and 15e screwed into '. Thus, the support shaft is inserted through the spacers 14d and 14e and the through holes 13d and 13e, screwed into the spacers 14d and 14e, passes through the spacers 14d and 14e, and the screw hole 13d ′. , 13e ′ and screws 15d, 15e.

  Accordingly, in a state where two points of the support arm 4 of the rain gutter support fitting 1 described later are supported on the spacers 14d and 14e located in the through holes 13d and 13e (see FIG. 8), a hammer is applied from above the support arm 4. For example, the support arm 4 can be bent by hitting the support arm 4 downward (in the direction of the arrow P ′).

  The through-hole 13f constitutes an insertion passage R for the support arm 4 by a spacer 14f provided at the position and a spacer 14e provided in the through-hole 13e, and the support recess 4 is formed by the second recess 17. When bending is performed (see FIG. 8), the distal end portion 4 ′ of the support arm 4 is passed through the insertion passage R between the spacers 14e and 14f, and the distal end portion 4 ′ of the support arm 4 is bent. It prevents movement (ramp).

  Reference numeral 18 denotes a stopper for adjusting the degree of curvature of the support arm 4, and is inserted into the central vertical groove portion 16 c between the front surface plate 11 and the rear surface plate 12 so as to be movable up and down. The stopper 18 includes a rod-shaped main body 18a that can be moved up and down along the central vertical groove 16c of the first recess 16, and a horizontal guide 18b provided at the lower end of the main body 18a. The whole has an inverted T shape. The main body portion 18a is provided so as to be movable up and down from the central vertical groove portion 16c, and a fitting groove parallel to the groove T ′ formed by the front surface plate 11 and the rear surface plate 12 is provided at the tip thereof. 18c is recessed.

  On the other hand, guide blocks 19 and 19 are fixed to the left and right of the lower end portion of the central vertical groove portion 16c on the back surface 11 ″ of the front plate 11 with a width slightly larger than the left and right width of the main body portion 18a of the fastener 18. In addition, a guide block 20 that is long in the vertical direction is fixed to a portion corresponding to the right side of the horizontal guide portion 18b on the back surface 11 ″. Therefore, the stopper 18 can move the main body 18a up and down between the guide blocks 19 and 19, and the right side of the horizontal guide 18b is brought to the left side of the guide block 20 during the up and down. In order to slide along, the stopper 18 is configured to be able to smoothly move up and down along the central vertical portion 16c between the front plate 11 and the back plate 12.

  Of course, the thickness of the stopper 18 is formed narrower than the width T of the groove T ′ when the front plate 11 and the back plate 12 are fitted and fixed. It can be moved up and down in the direction.

  Below the central vertical groove 16c in the front plate 11 and the back plate 12, three position adjusting holes 21a to 21c are formed penetratingly in the vertical direction. These position adjusting holes 21a to 21c are provided so as to be located at corresponding positions when the front and back plates 11 and 12 are fitted and fixed as shown in FIG.

  On the other hand, a single through-hole 18d is formed at a position below the main body of the stopper 18. Thereby, the position of the fitting groove 18c of the stopper 18 in the first recess 16 can be adjusted in three stages. That is, as shown in FIG. 1, the position of the through hole 18d is aligned with the uppermost position adjusting hole 21a, and the position adjusting pin 22 is moved from the position adjusting hole 21a of the surface plate 11 to the position of the fastener 18. The stopper 18 can be fixed at the highest position by being inserted into the through hole 18d and inserted through the corresponding position adjusting hole 21a of the back plate 12 (see FIGS. 4 and 9A). . Similarly, by fixing the through hole 18d of the stopper 18 with the pin 22 in accordance with the second and third stage position adjusting holes 21b and 21c, the position of the stopper 18 is changed to the middle and lower stages. (See FIGS. 6A and 6B).

  Thereby, the grade of the bending process of the support arm 4 of the said gutter support metal fitting 1 can be adjusted in three steps. That is, when the stopper 18 is fixed at the upper position and the support arm 4 of the gutter support bracket is supported between the spacers 14c and 14a (see FIGS. 4 and 9A), the support is supported. Since the distance between the lower surface 4 ″ of the arm 4 and the bottom 18c ′ of the fitting groove 18c of the stopper 18 is the shortest (distance t1) (see FIG. 4), the fitting at the upper end of the support arm 4 is performed. By hitting the position corresponding to the joint groove 18c, the shallowest curved portion (curved portion having the largest curvature radius) C1 can be formed (see FIG. 5).

  Next, when the stopper 18 is fixed at the middle position and the support arm 4 of the gutter support bracket 1 is supported between the spacers 14c and 14a (see FIG. 6A), the support arm 4 and the bottom 18c ′ of the fitting groove 18c of the stopper 18 is an intermediate distance (distance t2), and therefore corresponds to the fitting groove 18c at the upper end of the support arm 4. By hitting the position, a curved portion (curved portion having an intermediate radius of curvature) C2 having an intermediate depth can be formed.

  Next, when the stopper 18 is fixed at the lower position and the support arm 4 of the gutter support bracket is supported between the spacers 14c and 14a (see FIG. 6A), the support arm 4 Since the distance from the lower surface 4 ″ of the stopper 18 to the bottom portion 18c ′ of the fitting groove 18c is the longest distance (distance t3), it corresponds to the fitting groove 18c at the upper end portion of the support arm 4. By hitting the position, the deepest curved portion (curved portion having the smallest radius of curvature) C3 can be formed. Thus, depending on the position of the clasp 18, the bottom 18c from the lower surface 4 ″ of the support arm 4 can be formed. Since the distance to 'can be set in three stages, if the stopper 18 is fixed at any position, a substantially similar curved portion can be formed regardless of who strikes it.

  When the support arm 4 is placed on the spacers 14 a and 14 c on the front surface plate 11 and the back surface plate 12, fixing screw holes 22 a and 22 b are provided at positions facing the support arm 4 on the left and right sides of the first recess 16. Each is penetrated (refer FIG. 3). In the screw holes 22a and 22b, when the support arm 4 is placed on the spacers 14a and 14c, butterfly screws 23a and 23b are inserted into the screw holes 22a and 22b from the surface 11 ′ side of the surface plate 11. Is screwed in so that the surface of the support arm 4 is temporarily fixed by the tip portions 23a ′ and 23b ′ of the butterfly screws 23a and 23b (see FIG. 9C), thereby supporting when the support arm 4 is struck. It is possible to suppress the ramping of the arm 4 and stably perform the bending process.

  When the support arm 14 is bent by the second recess 17, the support arm 4 is placed on the spacers 14 d and 14 e between the front plate 11 and the back plate 12 as shown in FIGS. At the same time, the tip 4 'of the support arm 4 is inserted into the insertion passage R, and then the support arm 4 in the center of the second recess 17 is hit from above. At this time, fixing screw holes 22 c and 22 d (see FIG. 3) are provided at positions facing the support arm 4 on the left and right of the second recess 17. In the screw holes 22c and 22d, when the support arm 4 is placed on the spacers 14d and 14e, butterfly screws 23c and 23d are inserted into the screw holes 22c and 22d from the surface 11 ′ side of the surface plate 11, respectively. By screwing in (see FIG. 8), the surface of the support arm 4 is temporarily fixed by the tip portions 23c ′ and 23d ′ of the butterfly screws 23c and 23d (see FIG. 9 (c)), thereby supporting when tapped. It is possible to suppress the ramping of the arm 4 and stably perform the bending process.

  The position adjusting pin 22 is connected to the fixing hole 26 of the surface plate 11 by a chain 24 and a mounting ring 24 '.

  Since the metal rod bending tool of the present invention is configured as described above, its function will be described below.

  The operation of forming the curved portion C from the straight state as shown in FIG. 10 for the support arm 4 of the gutter support fitting 1 will be described.

  First, the case where the shallowest curved part C1 is formed will be described. In this case, as shown in FIG. 4, the through hole 18d of the stopper 18 is aligned with the uppermost position adjusting hole 21a, and the position adjusting pin 22 is aligned with the position adjusting hole 21a, the through hole 18d, and the position adjusting hole 21a. And the fastener 18 is fixed to the uppermost stage.

  Thereafter, the butterfly screws 23a and 23b are loosened, and the support arm 4 is inserted into the groove T 'from the upper side of the processing tool 10 and placed horizontally on the spacers 14a and 14c, as shown in FIG. Then, the butterfly screws 23a and 23b are tightened and the tips 23a 'and 23b' are brought into contact with the surface of the support arm 4 to temporarily fix the support arm 4 at the position (see FIG. 9C). .

  From such a state, with the one hand holding the lower side of the processing tool 10, with the hammer held in the other hand, the upper surface center part 4 a corresponding to the stopper 18 of the support arm 4 is directed downward. Just hit it.

  Then, while the support arm 4 is supported at the two points of the left and right spacers 14a and 14c, the upper surface central portion 4a is bent downward, but the lower surface 4 ″ of the support arm 4 is below the distance t1. At the time of movement to the bottom 18c 'of the fitting groove 18c of the stopper 18, the curvature of the lower surface 4 "of the central portion is restricted.

  Therefore, the most gradual curved portion C1 can be formed on the support arm 4 by the above operation (see FIG. 5). The moving distance t1 of the lower surface 4 ″ of the central portion is the same distance t1 regardless of who hits it, so that the rain gutter support having the curved portion C1 having substantially the same (for example, the same curvature radius) regardless of the skill level of the operator. Many metal fittings 1 can be easily formed.

  Next, the case where the curved part C2 curved moderately is formed will be described. In this case, as shown in FIG. 6A, the through hole 18d of the stopper 18 is aligned with the middle position adjusting hole 21b, and the position adjusting pin 22 is adjusted to the position adjusting hole 21b, the through hole 18d and the position adjusting hole. The stopper 18 is inserted into the hole 21b and fixed to the middle stage (see FIG. 6B).

  Thereafter, the butterfly screws 23a and 23b are loosened, and the support arm 4 is inserted into the groove T 'from the upper side of the processing tool 10 and placed horizontally on the spacers 14a and 14c, as shown in FIG. Then, the butterfly screws 23a and 23b are tightened and the tips 23a 'and 23b' are brought into contact with the surface of the support arm 4 to temporarily fix the support arm 4 at the position (see FIG. 9C). .

  From such a state, with the one hand holding the lower side of the processing tool 10, with the hammer held in the other hand, the upper surface center part 4 a corresponding to the stopper 18 of the support arm 4 is directed downward. Just hit it.

  Then, as shown in FIG. 6 (a), the support arm 4 is curved while the upper surface central portion 4a is curved downward with the two points of the left and right spacers 14a and 14c being supported. Since the center lower surface 4 ″ contacts the bottom 18c ′ of the fitting groove 18c of the clasp 18 when the center lower surface 4 ″ moves downward by the distance t2, further bending of the center lower surface 4 ″ is restricted.

  Therefore, the curved portion C2 that is curved moderately can be formed in the support arm 4 by the above operation. Since the movement distance t2 of the lower surface 4 ″ of the central portion is the same distance t2 regardless of who strikes it, the rain gutter support bracket having the curved portion C2 having substantially the same (for example, the same curvature radius) regardless of the skill level of the operator. Many 1 can be formed easily.

  Next, a case where the curved portion C3 that is curved most greatly is formed will be described. In this case, the through hole 18d of the stopper 18 is aligned with the lower position adjusting hole 21c, and the position adjusting pin 22 is inserted into the position adjusting hole 21c, the through hole 18d, and the position adjusting hole 21c, and the stopper 18 is inserted. Is fixed to the lower stage (see FIG. 6B).

  Thereafter, the butterfly screws 23a and 23b are loosened, and the support arm 4 is inserted into the groove T 'from the upper side of the processing tool 10 and placed horizontally on the spacers 14a and 14c, as shown in FIG. Then, the butterfly screws 23a and 23b are tightened and the tips 23a 'and 23b' are brought into contact with the surface of the support arm 4 to temporarily fix the support arm 4 at the position (see FIG. 9C). .

  From such a state, with the one hand holding the lower side of the processing tool 10, with the hammer held in the other hand, the upper surface center part 4 a corresponding to the stopper 18 of the support arm 4 is directed downward. Just hit it.

  Then, as shown in FIG. 6 (b), the support arm 4 is curved while the upper surface central portion 4a is curved downward while the two points of the left and right spacers 14a and 14c are supported. When the center lower surface 4 ″ is moved downward by the distance t3, the center lower surface 4 ″ contacts the bottom 18c ′ of the fitting groove 18c of the clasp 18, so that further bending of the central lower surface 4 ″ is restricted.

  Therefore, the bending portion C3 that is bent most deeply in the support arm 4 can be formed by the above-described operation (see FIG. 6A). The moving distance t3 of the lower surface 4 ″ of the central portion is the same distance t3 regardless of who hits it. Therefore, the rain gutter support bracket having the curved portion C3 that is substantially the same (for example, the same radius of curvature) regardless of the skill level of the operator. Many 1 can be formed easily.

  In any of the above cases, the support arm 4 is temporarily fixed by the butterfly screws 23a and 23b. Therefore, even if the upper surface central portion 4a is hit with a hammer, the support arm 4 is not disturbed and is stable. Can be bent. That is, when the upper surface central portion 4a of the support arm 4 is struck with a hammer, it is temporarily fixed at two positions on the left and right sides of the upper surface central portion 4a (the positions of the tip portions 23a 'and 23b' of the butterfly screws 23a and 23b). Therefore, when the hammer is struck with a hammer, the support arm 4 does not vibrate or swing due to the impact, and therefore the tapping force in the direction of arrow P (downward) is the tapping point of the support arm 4 (the upper surface center portion 4a ) Accurately in the direction of arrow P (downward), and as a result, the support arm 4 can be appropriately curved.

  When the support arm 4 is struck with the hammer, the support arm 4 may eventually be separated from the tip portions 23a ′ and 23b ′ of the butterfly screws 23a and 23b. Since it is in a state of being temporarily fixed by the butterfly screws 23a and 23b at the time of hitting, the above-described stable bending process can be performed.

  Next, as shown in FIG. 11, the operation of bending the distal end portion of the bending portion C1 formed at one end in the opposite direction to form another bending portion (return bending portion) C4 will be described.

  In this case, as shown in FIGS. 7 and 8, processing is performed with the left side of the processing tool 10 facing upward. Therefore, the operation will be described by defining the second concave portion 17 side in FIGS. 7 and 8 as the upper side, and defining the upper, lower, left, and right sides as a reference.

  As shown in FIG. 8, the butterfly screws 23c and 23d are loosened, and the support arm 4 is inserted into the groove T 'from the upper side of the processing tool 10, placed on the spacers 14d and 14e, and the tip 4'. Is inserted into the insertion passage R. Therefore, the tip 4 'is located between the spacers 14e and 14f. Then, the butterfly screws 23c and 23d are tightened, and the tips 23c 'and 23d' are brought into contact with the surface of the support arm 4 so that the support arm 4 is temporarily fixed at the position (see FIG. 9C). .

  From such a state, with one hand gripping the lower side of the processing tool 10, with the hammer held in the other hand, the upper surface central portion 4a of the support arm 4 is directed downward (arrow P ′ direction). Just hit it.

  Then, since the upper surface central portion 4a is curved downward while the support arm 4 is supported at the two points of the left and right spacers 14d and 14e, a so-called reverse curved portion C4 can be formed.

  Also in this case, since the support arm 4 is fixed by the butterfly screws 23c and 23d, even if the upper surface center portion 4a is struck with a hammer, the support arm 4 is not violated and is stably bent. be able to. That is, when the upper surface central portion 4a of the support arm 4 is struck with a hammer, it is temporarily fixed at two positions on the left and right sides of the upper surface central portion 4a (positions of the distal end portions 23c 'and 23d' of the butterfly screws 23c and 23d). Therefore, when the hammer is struck with a hammer, the support arm 4 does not vibrate or swing due to the impact. 4a) acts accurately in the direction of the arrow P ′ (downward), and as a result, the support arm 4 can be appropriately curved.

  When the support arm 4 is struck with the hammer, the support arm 4 may eventually be separated from the distal end portions 23c ′ and 23d ′ of the butterfly screws 23c and 23d. Since it is in a state of being temporarily fixed by the butterfly screws 23c and 23d at the time of hitting, the above-described stable bending process can be performed.

  As described above, according to the present invention, the degree of curvature of the support arm 4 can be easily adjusted according to the position of the stopper metal 18, and is adapted to, for example, the situation in the field regardless of the skill level of the operator. The rain gutter support bracket 1 having a curved portion with a radius of curvature can be easily formed.

  Further, when the support arm 4 is struck with a hammer or the like, the support arm 4 can be prevented from being ramped, and the bending process can be performed accurately by applying a force in the bending direction to the support arm 4 with certainty.

  Further, by using the second concave portion, it is possible to easily perform operations such as once forming the bending portion C1 in the support arm 4 and further bending the tip portion in the reverse direction.

  Moreover, the front surface plate 11 and the back surface plate 12 can be firmly fixed by screwing the screw into the spacer.

  Further, a support shaft is constituted by a screw or the like screwed into the spacer, and a screw is screwed into the spacer, and the front and back plates 11 and 12 are in close contact with the front and rear ends of the spacer (see FIG. 9B), In the groove T ′, the screws, the spacers, and the front and back plates 11 and 12 are integrated, so that a strong support shaft that can withstand the hammering of the metal can be configured.

  Also, the outer periphery of the spacer forms a smooth cylindrical surface, and unlike nuts such as hex nuts, there are no irregularities on the outer periphery, so two points of the metal rod are stably held by a pair of support shafts. obtain.

  In FIGS. 1 and 2, reference numerals 27a and 27b denote spare screw holes.

  The metal rod bending tool according to the present invention can be widely used as, for example, a bending tool for a support arm of a rain gutter support fitting.

1 Rain gutter support bracket 4 Support arm (metal gutter)
4 'tip part 4 "lower surface 4a upper surface center part 10 processing tool 11 surface plate (metal plate)
11 'surface 12 back plate (metal plate)
13a-13f Through hole (hole)
13a'-13f 'screw hole (hole)
14a-14f Spacer 14a, 14c Spacer 14d, 14f Spacer 14 'Female thread 15a-15f Screw 15a, 15c Screw 15d, 15f Screw 16 First recess (recess)
16 'Center facing part (bottom)
17 Second concave portion 17c Common vertical side (bottom)
18 Stopper 18c Fitting groove 18d Through hole 19 Guide block 20 Guide blocks 21a to 21c Position adjusting hole 22 Position adjusting pins 22a and 22b Fixing screw holes 22c and 22d Fixing screw holes 23a and 23b Butterfly screw (screw)
23a ', 23b' tip 23c, 23d butterfly screw (screw)
23c ', 23d' tip T 'groove

Claims (8)

Two metal plates are arranged close to each other, a groove is formed around the two metal plates, both metal plates are fixed, and a concave portion is formed from the upper side of both metal plates toward the central portion of the two metal plates,
A pair of support shafts penetrating the groove perpendicular to both the metal plates are provided on both sides of the recess and above the bottom of the recess,
With the metal rod inserted between the two metal plates from the groove placed on the pair of support shafts, the metal rod is struck from the upper side of the metal rod in the recess to make the metal rod concave. To bend
A stopper is disposed between the two metal plates in the recess, and a fitting groove is provided on the upper end of the stopper to limit the bending of the metal rod by contacting the lower surface of the metal rod at the time of tapping.
The metal, characterized in that the stopper can be moved up and down in the recess between the metal plates, and the height of the fitting groove in the recess can be set in a plurality of stages. A bowl bending tool.   A plurality of position adjustment holes are provided in the vertical direction in the metal plate in the vicinity of the recess, and a through hole is provided in the fastener, and the pin is in a state where the through hole and any of the position adjustment holes are aligned. The metal rod bending tool according to claim 1, wherein the fastener is fixed at a predetermined height position by being inserted into the through hole and the position adjusting hole. A pair of fixing screw holes penetrating through the metal plate so as to correspond to the metal rod placed on the support shaft in the vicinity of the pair of support shafts;
The metal plate is configured to be temporarily fixed by screwing screws into the fixing screw holes from the surface side of the metal plate and bringing the tip of the screw into contact with the metal rod. The metal bowl bending tool according to claim 1 or 2, wherein the metal bowl bending tool is provided.   The metal rod bending tool according to any one of claims 1 to 3, wherein a guide block that guides the vertical movement of the stopper metal is fixed inside the metal plate. Forming a second recess from the side adjacent to the upper side where the recess of the metal plate is formed toward the center of the metal plate;
A pair of support shafts that pass through the groove perpendicular to both the metal plates are provided on both sides of the second recess and on the side of the metal plate from the bottom of the second recess,
With the second recess positioned upward, a metal rod inserted between the two metal plates from the groove is placed on the pair of support shafts, and in this state, the metal in the second recess is The metal rod bending tool according to any one of claims 1 to 4, wherein the metal rod is configured to be bent into a concave shape by hitting the metal rod from above the metal rod.   A pair of fixings to the metal plates on both sides of the second recess so as to correspond to the metal rods placed on the support shafts in the vicinity of the pair of support shafts in the second recess. A screw hole is penetrated, the screw is screwed into the fixing screw hole from the surface side of the metal plate, and the tip of the screw is brought into contact with the metal rod, thereby temporarily fixing the metal rod. 6. The metal rod bending tool according to claim 5, wherein the metal rod bending tool is obtained. The two metal plates are constituted by a front plate and a back plate, and the front plate and the back plate are provided with a plurality of holes communicating with both plates, and the screws are inserted into the holes to insert the screws. The front plate and the back plate are screwed and fixed,
A ring-shaped spacer is provided between the front plate and the back plate corresponding to each hole, and a female screw is formed in each spacer.
Each said screw is screwed into the said spacer from the said hole of the said surface board, and is screwed and fixed to the said hole of the said back surface board, The one in any one of Claims 1-6 characterized by the above-mentioned. Metal bowl bending tool.   The support shaft is composed of the spacer and the screw screwed into the spacer through the hole of the front plate and threaded into the hole of the back plate through the spacer. The metal bowl bending tool according to claim 7.

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