JP2014202292A - Open-hole structure, supporting member fixing structure, method for fixing the supporting member to column member and punching tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an open hole structure for use in fixing a bolt shaft by a method in which a step for arranging a spring washer is eliminated and a pressure-contact body (either a nut body or a bolt head) arranged at the bolt shaft in the open hole is brought into pressure-contact with a circumferential wall of the open hole under a state in which it is locked against a releasing condition.SOLUTION: An open hole structure of this invention is an open hole structure for use in fixing a bolt shaft through a pressure-contact body arranged at the bolt shaft characterized in that the open hole is punched at a metallic plate, an annular belt enclosing the bolt shaft inserted into the open hole is constituted, at least a part of the annular belt is provided with a slant part protruded from the metallic plate under its inclined attitude and at the same time enabled to incline against the metallic plate, an inner edge of the annular belt including the extremity end of the slant part constitutes at least a part of an opening edge having the first width capable of inserting the bolt shaft. At least a part of the slant part is arranged in such a way that it can be in contact with the pressure-contact body when the pressure-contact body is brought into pressure-contact with the plate in order to fix the bolt shaft inserted into the open hole to the plate.

Description

  The present invention relates to a through-hole structure, a support material fixing structure, a method for fixing a support material to a pillar material, and a drilling tool.

  Conventionally, as a means for fixing a support material having a bolt shaft such as a bar material to a metal plate-like portion such as a wall material, a support material fixing structure as in Patent Document 1 or 2 is generally used. Yes.

  In the support material fixing structure of Patent Document 1, the support bolt (5) that supports the box (1) is fixed to a lightweight steel (6) that is a pair of metal column members in an erected state. The support bolt (5) has penetrated the through-hole each drilled in the column wall of a pair of lightweight steel (6). A pair of nut bodies are screwed to both ends of the support bolt (5). In the present fixing structure, the pair of nuts are fastened and pressed against the peripheral edge of the through hole on the outer surface of the column wall of each lightweight mold steel (6), and the pair of lightweight mold steels (6) are clamped from the outside by the pair of nut bodies. Thus, the support bolt (5) is fixed to the light weight steel (6) which is a pillar material.

  In the support material fixing structure of Patent Document 2, a box (B) in which a support bar (2) having a mounting bolt (3) formed at the tip is integrally formed is provided via a support bar (2) and a mounting bolt (3). And it is being fixed to the column wall of the support | pillar (S) made from lightweight shape steel. As shown in FIG. 4 of Patent Document 2, the mounting bolt (3) passes through the through hole formed in the column wall of the column (S), and the nut body ( The support bracket (9) is screwed. Then, the nut body (9) is pressed against the periphery of the through hole on the outer surface of the column wall via a washer so that the nut body (9) and the end of the support rod (2) sandwich the column wall of the column (S). doing.

Japanese Patent Laid-Open No. 3-112121 Japanese Utility Model Publication No. 61-180535

  In general, in the support material fixing structures such as Patent Documents 1 and 2, when the nut body is pressed against the column wall and the bolt shaft is fixed to the column wall, a spring washer (or a spring washer is used as a locking member for the nut body. ) Is interposed between the nut body and the column wall. That is, when the spring washer is clamped between the nut body and the column wall, the friction force between the spring washer and the nut body is improved by the spring back action of the spring washer itself. Is prevented from rotating with respect to the bolt shaft. Therefore, in a series of work steps for constructing the support material fixing structure, the step of inserting the spring washer through the bolt shaft prevents relative rotation of the nut body and the bolt shaft, and the support material is firmly attached to the column material (fixed part). It is an indispensable process for fixing. However, since this process is a relatively simple process, there is a possibility that the process may be omitted unintentionally at the time of fixing. In such a case, there is a problem that the nut body is loosened with time due to the absence of the spring washer, and the support material fixing structure becomes fragile. Alternatively, even if the omission is noticed after the support material fixing structure is constructed, the support material fixing structure must be disassembled and the spring washer inserted through the bolt shaft to construct the support material fixing structure again. However, there was a problem that workability was greatly reduced.

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is to eliminate a step of arranging a spring washer and press contact body (nut body or bolt head) disposed on a bolt shaft in a through hole. ) Is pressed against the peripheral wall of the through-hole in the state of being loosened to fix the bolt shaft, the support material fixing structure, the method of fixing the support material to the pillar material, and the through-hole structure It is to provide a drilling tool.

  The through-hole structure according to claim 1 is a through-hole structure for fixing the bolt shaft via a pressure contact body arranged on the bolt shaft, and the through-hole is formed in a metal plate-like portion. An annular band surrounding the bolt shaft inserted through the through-hole is configured, and at least a part of the annular band has an inclined portion protruding from the plate-like portion in an inclined posture and tiltable with respect to the plate-like portion. The inner edge of the annular belt including the tip of the inclined portion constitutes at least a part of an opening edge portion having a first width through which the bolt shaft can be inserted, and the bolt shaft inserted through the through hole is formed into a plate-like portion. When the press contact body is pressed against the plate-like portion to be fixed, at least a part of the inclined portion is disposed so as to be able to contact the press contact body. The “through hole” in the present invention is defined as a hole having an arbitrary shape that is formed in a plate-like portion (or a column wall) and allows a bolt shaft to be inserted therethrough. Further, the “annular band” is defined as a donut-shaped region having a predetermined width including at least an inclined portion (that is, a space surrounding the bolt shaft inserted through the through hole). The “annular band inner edge” is defined as the inner peripheral edge of the annular band including at least a part of the opening edge formed at the tip of the inclined part, and includes an insertion (or accommodation) space for the bolt shaft inwardly. . The “opening edge” is defined as an edge that forms an insertion (or accommodation) space for the bolt shaft inward.

  The through-hole structure according to claim 2 is the through-hole structure according to claim 1, wherein the tip of the inclined portion tilts toward the bolt shaft side when the inclined portion is deformed by being pressed by the press contact body. The inclined side length of the inclined portion is determined so as to be in pressure contact with the bolt shaft.

  The through-hole structure according to claim 3 is the through-hole structure according to claim 1 or 2, wherein a notch or a cut extending from the base end to the tip end of the inclined portion is formed in a part of the annular band. It is characterized by that.

  According to a fourth aspect of the present invention, the through hole structure according to any one of the first to third aspects is characterized in that the press contact body is a nut body screwed onto the bolt shaft.

  The support member fixing structure according to claim 5 is a support member fixing in which a support member having at least one bolt shaft is fixed to a column member through a through hole formed in a metal column wall of the column member. An annular band that surrounds the bolt shaft that is inserted into the through-hole is formed, and at least part of the annular band is formed so as to protrude from the plate-like portion in an inclined posture, and can be tilted with respect to the column wall And an inner edge of the annular band including the tip of the inclined portion constitutes at least a part of an opening edge portion having a first width through which the bolt shaft can be inserted, and at least one of the bolt shaft inserted through the through hole. Since the two screwed bodies are screwed and the screwed body is pressed against the column wall, the support material is fixed to the column material, and at least a part of the inclined portion is pressed against the column wall side by the screwed body. It is characterized by being deformed.

  The support material fixing structure according to claim 6 is the support material fixing structure according to claim 5, characterized in that the tip of the inclined portion tilts toward the bolt shaft side and presses against the bolt shaft.

  The support material fixing structure according to claim 7 is the support material fixing structure according to claim 5 or 6, wherein a pair of screwed bodies are screwed to the bolt shaft, and the pair of screwed bodies are used. It is characterized by clamping the column wall.

  The support material fixing structure according to claim 8 is the support material fixing structure according to claim 5 or 6, wherein the support material is fixed across a pair of column members. Are penetrating through holes formed in each column wall of the pair of column members with at least one bolt shaft, and the pair of screwed bodies pinch the pair of column members from the outside, or A bolt shaft is screwed so that the column wall of at least one of the pair of column members is clamped from both sides (or front and back), and a pair of screws are attached to the peripheries of the through holes of the pair of column members A pair of screwed bodies are pressed from both sides (or front and back) of the pillar wall to the peripheral edge of the through hole of the column wall to be pressed against each other, or the pressed inclined portion is pressed and deformed. It is characterized by that.

  The fixing method according to claim 9 is a method of fixing a support member having at least one bolt shaft to a column member, and forming a through hole for inserting the support member into a metal column wall of the column member. And forming an inclined portion projecting in an inclined posture from the column wall on at least a part of the annular band surrounding the bolt shaft inserted through the through hole, the inner edge of the annular band including the tip of the inclined portion Comprises at least a part of an opening edge portion having a first width through which the bolt shaft can be inserted, a step of inserting the bolt shaft into the through hole, and screwing a screwed body into the bolt shaft; A step of screwing the attachment body, pressing the screw attachment body against the column wall so that at least a part of the inclined portion is pressed and deformed by the screw attachment body, and fixing the bolt shaft to the column wall. Features.

  The fixing method according to claim 10 is the fixing method according to claim 9, wherein the step of fixing the bolt shaft to the column wall is performed by tilting the inclined portion toward the bolt shaft by the contact of the screwed body, Including pressing the tip of the inclined portion against the outer surface of the bolt shaft.

  A drilling tool according to an eleventh aspect is a drilling tool for forming a through hole in a plate-like portion so as to fix the bolt shaft to a metal plate-like portion via a pressure contact member arranged on the bolt shaft. A male blade for punching the plate-like portion and a female blade into which the male blade can be inserted, and the plate-like portion is perforated by sandwiching the plate-like portion between the pair of male blades and the female blade. And at least one part of the annular belt surrounding the bolt shaft inserted in the through-hole in the drilling step. The inner edge of the annular band including the tip of the inclined portion is an opening edge portion having a first width through which the bolt shaft can be inserted. At least part of the first width is larger than the diameter of the bolt shaft, Wherein the pressure body is arranged in bets axis is defined at the contact width capable to at least a portion of the inclined portion.

  A drilling tool according to a twelfth aspect is the drilling tool according to the eleventh aspect, wherein the inclined portion formed by the inclined forming portion is formed on a part or the whole of the circumferential direction of the peripheral edge of the through hole, and The circumference formed by the tip is characterized by being larger than the outer circumference of the male blade.

  The drilling tool according to claim 13 is the drilling tool according to claim 11 or 12, wherein the inclined forming portion forms a skirt having a second width larger than the first width at a base end of the inclined portion. In addition, when the inclined portion is pressed and deformed by the pressure contact body, the slope length from the hem portion to the opening edge is such that the tip of the inclined portion tilts toward the bolt shaft side and presses against the bolt shaft in the through hole. It is characterized by determining the length.

  A drilling tool according to a fourteenth aspect is the drilling tool according to any one of the eleventh to thirteenth aspects, wherein the diameter of the male blade is substantially the same as the outer diameter of the bolt shaft.

  The drilling tool according to claim 15 is the drilling tool according to any one of claims 11 to 13, wherein the drilling width of the drilling formed by the drilling blade is smaller than the outer diameter of the bolt shaft, and is inclined. It is characterized by being expanded to the first width by the part.

  According to the invention described in claim 1, the annular band having the inclined portion protruding from the outer surface of the plate-like portion is formed. When a pressure contact body (for example, a nut body, a bolt head, etc.) disposed on the bolt shaft is pressed against the outer surface of the plate-like portion in order to fix the bolt shaft to the plate-like portion, the pressure contact body is placed on the inclined portion. It abuts and the tiltable tilting portion is pressed and deformed. In other words, a restoring force (or a resilient force) is generated in which the inclined portion that is pressed and deformed by the press contact member tries to return to the original state by the metal spring back. And this inclination part repels with respect to the press of a press-contacting body. That is, when the restoring force acts on the pressure contact body, the frictional force between the pressure contact surface of the pressure contact body and the plate-like portion outer surface is improved. And it is controlled that the pressure contact force to the plate-shaped part of a press-contact body weakens by the said restoring force and frictional force, and it is suppressed as a result that fixation with a bolt axis and a plate-shaped part loosens. That is, when the tiltable tilted portion is pressed and deformed by the pressure contact body, the tilted portion itself urges the pressure contact body outward, and exhibits a spring back action similar to a spring washer. Therefore, according to the present invention, it is possible to omit the step of arranging the conventional spring washer, and it is possible to simplify and expedite the work step of constructing the fixing structure between the bolt shaft and the plate-like portion. . The through-hole structure of the present invention can be interpreted as a bolt shaft fixing device for fixing a bolt shaft.

  According to the invention of claim 2, in addition to the effect of the invention of claim 1, when the inclined portion is pressed and deformed by the press contact body, the tip of the inclined portion is inclined toward the bolt shaft side, and the inside of the through hole is In addition to the pressure contact force between the pressure contact body and the plate-like portion, the pressure contact force between the inclined portion and the bolt shaft is exhibited, and the bolt shaft is locked in a non-rotating state. It can be firmly fixed to the plate-like portion. In particular, the movement of the bolt shaft in the axial direction is effectively restricted by fitting the tip of the inclined portion into the thread groove on the outer surface of the bolt shaft.

  According to the invention described in claim 3, in addition to the effect of the invention of claim 1 or 2, the notch or the cut is formed in a part of the annular band, so that the cut or the cut end is pressed. It bites into the pressure contact surface of the body and improves the loosening prevention effect of the pressure contact body.

  According to the invention described in claim 4, in addition to the effect of any one of claims 1 to 3, the bolt body can be obtained by suppressing the rotation of the nut body in which the inclined portion is screwed to the bolt shaft in the removing direction. It is effectively prevented that the fixing between the plate and the plate-like portion is weakened.

  According to invention of Claim 5, the cyclic | annular belt | band | zone which has the inclination part protruded from the outer surface of the column wall is formed. Then, in a state where a screwed body (for example, a nut body) screwed to the bolt shaft abuts on the inclined part and pressurizes and deforms the tiltable inclined part, the screwed body is pressed against the outer surface of the column wall. The support material is fixed to the pillar material. That is, a restoring force (or a resilient force) is generated in which the inclined portion pressed and deformed by the screwed body is restored to the original state by the metal spring back. The inclined portion is repelled against the pressing of the screwed body. That is, when the restoring force acts on the screw body, the frictional force between the pressure contact surface of the screw body and the outer surface of the column wall is improved. Then, the restoring force and the frictional force restrict the screw body from rotating in the loosening direction, and as a result, the bolt shaft and the column wall are prevented from loosening. In other words, the tiltable tilting portion is pressed and deformed by the screwed body, and the tilted portion itself urges the screwed body outward to exert a spring back action similar to that of a spring washer. Therefore, the support material fixing structure of the present invention can firmly fix the support material and can omit the step of arranging a conventional spring washer when constructing this fixing structure, simplifying the work process. And can be speeded up.

  According to the sixth aspect of the invention, in addition to the effect of the fifth aspect of the invention, the tip of the inclined portion tilts toward the bolt shaft side and presses against the bolt shaft in the through hole, so that In addition to the pressure contact force between the body and the column wall, it exerts the pressure contact force between the inclined part and the bolt shaft, locks the bolt shaft in a non-rotating state, and fixes the support material to the column wall more firmly. Yes. In particular, movement of the bolt shaft in the axial direction is effectively restricted by fitting the tip of the inclined portion into the thread groove on the outer surface of the bolt shaft.

  According to the invention described in claim 7, in addition to the effect of the invention of claim 5 or 6, the above effect can be exhibited in the support material fixing structure in which the column wall is clamped by the pair of screwed bodies.

  According to the invention described in claim 8, in addition to the effect of the invention of claim 5 or 6, the above effect is exhibited in the support material fixing structure in which the support material is fixed across the pair of column members. Can do.

  According to invention of Claim 9, the cyclic | annular strip | belt which has the inclination part protruded from the outer surface of the column wall is formed. Then, the screwed body is brought into contact with the inclined part so as to press-deform the tiltable inclined part, and a screwed body (for example, a nut body) screwed to the bolt shaft is pressed against the outer surface of the column wall. The support material is fixed to the pillar material. That is, a restoring force (or a resilient force) is generated in which the inclined portion pressed and deformed by the screwed body attempts to return to the original state by the metal spring back. And this inclination part repels with respect to the press of a screwing body. That is, when the restoring force acts on the screwed body, the frictional force between the pressure contact surface of the screwed body and the column wall outer surface is improved. And it can control that a screwed body rotates in the direction which loosens with the said restoring force and frictional force, As a result, it can suppress that fixation with a bolt axis and a column wall loosens. That is, by pressing and deforming the tiltable tilting portion with the screwed body, the tilted portion itself urges the screwed body outward, and the spring back action similar to that of the spring washer can be exhibited. Therefore, the fixing method of the present invention can omit the step of arranging the conventional spring washer, and can simplify and expedite the work step of constructing the fixing structure of the bolt shaft and the plate-like portion. .

  According to the invention of claim 10, in addition to the effect of the invention of claim 9, when the inclined portion is pressed and deformed by the screwed body, the tip of the inclined portion tilts toward the bolt shaft side, and the through hole Press contact with the bolt shaft inside. That is, in addition to the pressure contact force between the screwed body and the column wall, the pressure contact force between the inclined portion and the bolt shaft can be exerted to more firmly fix the support material to the column material. In particular, the movement of the bolt shaft in the axial direction can be effectively restricted by fitting the tip of the inclined portion into the thread groove on the outer surface of the bolt shaft.

  According to the eleventh aspect of the present invention, it is possible to form an annular band having an inclined portion protruding in an inclined posture from the outer surface of the plate-like portion by the inclined forming portion of the drilling tool. Then, in the through-hole structure formed by the drilling tool, a pressure contact body (for example, a nut body, a bolt head, etc.) disposed on the bolt shaft is pressed against the outer surface of the plate portion in order to fix the bolt shaft to the plate portion. When this is done, the pressure contact body comes into contact with the inclined portion, and the inclined portion that can be tilted is pressed and deformed. In other words, a restoring force (or a resilient force) is generated in which the inclined portion that is pressed and deformed by the press contact member tries to return to the original state by the metal spring back. And this inclination part repels with respect to the press of a press-contacting body. When the restoring force acts on the pressure contact body, the frictional force between the pressure contact surface of the pressure contact body and the outer surface of the plate-like portion is improved. And it is controlled that the pressure contact force to the plate-shaped part of a press-contact body weakens by the said restoring force and frictional force, and it is suppressed as a result that fixation with a bolt axis and a plate-shaped part loosens. In other words, the drilling tool of the present invention has a spring back action similar to that of a spring washer by the drilling blade and the inclined forming portion, together with the through hole through which the bolt shaft can penetrate, and the inclined portion itself urges the press contact body outward. An annular band that exhibits the above can be formed.

  According to the twelfth aspect of the present invention, in addition to the effect of the eleventh aspect of the invention, the circumference formed by the tip of the inclined portion is larger than the outer circumference of the male blade. The perforating blade (male blade) can be easily detached from the plate-like portion.

  According to the invention of claim 13, in addition to the effect of the invention of claim 11 or 12, in the inclined part formed by the drilling tool, the tip of the inclined part tilts toward the bolt shaft side and the inside of the through hole is By pressing against the bolt shaft, in addition to the pressure contact force between the screwed body and the column wall, the pressure contact force between the inclined portion and the bolt shaft is exerted, and the bolt shaft is locked in a non-rotating state. Can be more firmly fixed to the pillar material. In particular, the movement of the bolt shaft in the axial direction can be effectively restricted by fitting the tip of the inclined portion into the thread groove on the outer surface of the bolt shaft.

  According to the invention of claim 14, in addition to the effect of any one of claims 11 to 13, the through hole can be drilled with a first width at which at least the bolt shaft can be inserted into the through hole.

  According to the fifteenth aspect of the invention, in addition to the effect of the invention of any of the eleventh to thirteenth aspects, the bolt shaft can be inserted into the through hole, and the tip of the inclined portion is brought close to the bolt shaft. Through holes can be formed. That is, it is possible to form a through hole whose tip can be pressed against the bolt shaft when the inclined portion is tilted.

The (a) perspective view and (b) sectional view of the through-hole structure in one embodiment of the present invention. The schematic diagram which shows the process of fixing a bolt axis | shaft to a plate-shaped part in the through-hole structure of FIG. The side view of the drilling tool in one Embodiment of this invention. FIG. 4 is a partially enlarged perspective view of a drilling blade of the drilling tool of FIG. 3. Sectional drawing of the drilling blade of FIG. It is a schematic diagram which shows the process of drilling a plate-shaped part with the drill tool of FIG. 3, Comprising: (a) The process of arrange | positioning a drill tool in a plate-shaped part, (b) The process of moving a drilling blade vertically, and (c). A step of perforating a plate-like portion with a perforating blade. The partial expanded sectional view of the form which perforates a plate-shaped part with the perforation blade of FIG.6 (c). The perspective view of the through-hole structure which has (a) notch and (b) cut in another embodiment of this invention. The partial expansion perspective view of the drilling blade of the drilling tool in another embodiment of this invention. The (a) perspective view and (b) top view of the through-hole structure in another embodiment of this invention. The (a) perspective view and (b) top view of the through-hole structure in another embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS (a) Front perspective view of support material fixing structure of one Embodiment of this invention, (b) Back perspective view. The disassembled perspective view of the support material fixing structure of FIG. It is a top view of the support material fixing structure of FIG. 12, Comprising: (a) Exploded sectional view, (b) Cross sectional view. The perspective view of the support material fixing structure of another embodiment of this invention. It is a top view of the support material fixing structure of FIG. 15, Comprising: (a) exploded sectional view, (b) sectional drawing. The disassembled perspective view of the support material fixing structure of another embodiment of this invention. 17 is a plan view of the support material fixing structure, (a) exploded sectional view, (b) sectional view. It is a top view of the support material fixing structure of another embodiment of this invention, Comprising: (a) exploded sectional view, (b) sectional drawing.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In addition, the shape of each figure referred in the following description is a conceptual diagram or a schematic diagram for explaining a suitable shape dimension, and a dimension ratio etc. do not necessarily correspond with an actual dimension ratio. That is, the present invention is not limited to the dimensional ratio in the drawings.

  In each embodiment, the “through hole” is defined as a hole having an arbitrary shape, which is formed in the plate-like portion (or the column wall) and through which the bolt shaft is inserted. The “through-hole periphery” is defined as an edge that borders the entire circumference of the arbitrarily shaped through-hole. The “annular band” is defined as a donut-shaped region having a predetermined width including at least the inclined portion (that is, a space surrounding the bolt shaft inserted through the through hole). The “annular belt inner edge” is defined as an inner peripheral edge portion including the tip end (or opening edge portion) of the inclined portion, and includes an insertion (or accommodation) space for the bolt shaft inside thereof. The “opening edge” is defined as an edge that forms the insertion (or accommodation) space of the bolt shaft inward, and can be configured to include a part or all of the “annular belt inner edge” (or the tip of the inclined portion). is there. In other words, the “annular band inner edge” constitutes part or all of the “opening edge”. The “annular band” only needs to surround the bolt shaft, and the “annular band inner edge” does not necessarily coincide with the outer periphery of the bolt shaft or the periphery of the through hole. That is, the inner edge of the annular band may be formed along the periphery of the through hole (the embodiment of FIGS. 1 and 8), may be located inside the through hole (the embodiment of FIG. 10), or , May be located outside the through hole (the embodiment of FIG. 11). Several embodiments of the through-hole structure of the present invention will be described below.

  1A and 1B are a perspective view and a sectional view of a through-hole structure 100 according to an embodiment of the present invention. As shown in FIG. 1A, the through-hole structure 100 includes a metal plate-like portion 101 having a predetermined thickness, a circular through-hole 102 formed in the plate-like portion 101 in a plan view, and the through-hole 102. And an annular band 103 projecting from the plate-like portion 101 in an inclined posture. The annular band 103 is formed at the base end of the annular skirt 104, the inclined portion 105 extending from the skirt 104 and inclined with respect to the plate-like portion 101, and the tip of the inclined portion 105. Open aperture edge 106. That is, the annular band 103 is defined as a region having a predetermined width between the annular band inner edge 103a (matching the opening edge portion 106) and the annular band outer edge 103b (matching the skirt portion 104). The bolt shaft 111) inserted through the hole 102 is surrounded. The annular belt inner edge 103a constitutes the entire opening edge 106 (the entire periphery of the through hole). That is, in this embodiment, the annular belt inner edge 103a is formed along the periphery of the through hole. The annular band 103 (or the inclined portion 105) is protruded from one wall surface 101a, in other words, is recessed at the back surface 101b. In the annular band 103, the plate-like portion 101 of the metal plate is bent, and the inclined portion 105 refracted upward at the skirt portion 104 can be tilted with the skirt portion 104 as a fulcrum.

  As shown in FIG. 1B, the opening edge 106 at the tip of the inclined portion 105 has a first width w1, and the skirt 104 at the base end of the inclined portion 105 has a second width W2. In the through-hole structure 100, the first width W1 is larger than the second width W2. In other words, the width of the annular band 103 is narrowed from the base end to the tip end of the inclined portion 105. In other words, the annular band 103 has a so-called truncated cone shape having an opening on the upper surface. The first width W1 is larger than or substantially equal to the outer diameter D of the bolt shaft 111 so that a bolt shaft 111 described later can pass through the through hole 102 (W1> D). . The inclined portion 105 has a hypotenuse length L as a distance from the proximal end to the distal end. The inclined portion 105 is inclined with respect to the plate-like portion 101 at an inclination angle α. In the present embodiment, the inclination angle α is smaller than 90 degrees so that the inclination part 105 can be inclined inward through the through hole 102 when pressed from above. However, the inclination α may be set to be larger than 90 degrees so that the inclined portion 105 is warped.

The length component of the inclined portion 105 in the horizontal direction (the planar direction of the plate-like portion 101) is L × cos (α), and the relationship between the first width W1 and the second width W2 is expressed by the equation [W1≈W2−. 2 (L × cos (α))]. The above relational expression is an approximate expression that ignores the thickness component of the plate-like portion 101. That is, as the inclined portion 105 is tilted toward the plate-like portion 101 and the inclination angle is decreased from α, the opening width is narrowed from the initial first width W1. When the inclined portion 105 is completely inclined (inclination angle≈0 degrees), theoretically, the width of the opening edge portion 106 of the through hole 102 is 2L (1-cos (α)) from the initial first width W1. ) Will only narrow. In the through hole structure 100 of the present embodiment, as will be described later, the first width W1 and the hypotenuse length L so that the tip of the inclined portion 105 can be pressed against the outer surface of the bolt shaft 111 having the outer diameter D in the through hole 102. And the inclination angle α is preferably determined. That is, in the preferred embodiment, the width W3 [≈W1-2L (1-cos (α))] in a state where the inclined portion 105 is completely tilted is smaller than the outer diameter D. That is, it is preferable that the dimension of each structure of the through-hole structure of this invention satisfy | fills the following conditions.
(Formula 1) W1> D
(Formula 2) W3 <D

  In the present embodiment, the “annular band” is a donut-shaped region of the inclined portion 105 located between the skirt 104 (matching the annular band outer edge 103b) and the opening edge 106 (matching the annular band inner edge 103a). It is. That is, the “annular belt inner edge”, “opening edge”, and “through-hole periphery” are matched.

  Next, with reference to FIG. 2, the function of the through-hole structure 100, that is, the form in which the bolt shaft 111 is fixed to the plate-like portion 101 will be described.

  As shown in FIG. 2A, in the through hole structure 100, a bolt shaft 111 having an outer diameter D is disposed through the through hole 102. One nut body 121 (screwed body or pressure contact body) is screwed to the bolt shaft 111 from one wall surface 101a side, and the other nut body 122 is screwed from the other wall surface 101b side. . That is, the pair of nut bodies 121 and 122 are opposed to each other so that the plate-like portion 101 is sandwiched between the press contact surfaces 121a and 122a.

  The pair of nut bodies 121 and 122 are respectively screwed from both ends of the bolt shaft 111 and moved to a predetermined position shown in FIG. 2A, the pressure contact surface 121a of one nut body 121 is in contact with the tip of the inclined portion 105 (or the opening edge portion 106), and the pressure contact surface 122a of the other nut body 122 is inclined. The portion 105 is in contact with the base end. That is, at least a part of the tiltable tilting portion 105 is disposed so as to be able to contact one nut body (pressure contact body) 121.

  Then, one or both of the pair of nut bodies 121 and 122 screw with respect to the plate-like portion 101 from the state of FIG. 2A, so that the pair of nut bodies 121 and 122 clamp the plate-like portion 101. . That is, one nut body 121 moves so as to be relatively close to one wall surface 101a of the plate-like portion 101, and the other nut body 122 supports the plate-like portion 101 from its back surface 101b. And as shown in FIG.2 (b), one nut body 121 carries out the press deformation so that the inclination part 105 may be inclined.

  In the state of FIG. 2B, one nut body 121 screwed to the bolt shaft 111 is pressed against the annular band 103 on the periphery of the through hole 102 and the other nut body 122 is the back surface 101 b of the plate-like portion 101. Is in pressure contact. The bolt shaft 111 is fixed to the plate-like portion 101 by screwing the plate-like portion 101 with the pair of nut bodies 121 and 122 screwed to the bolt shaft 111 in the through hole 102.

  More specifically, in a state where the inclined portion 105 is tilted by the nut body 121, a restoring force (or elastic force) that causes the inclined portion 105 to return to the original shape by the metal spring back is generated, and the nut body. The inclined portion 105 repels against the pressing by 121. And the inclined part 105 itself which carried out the press deformation is urging | biasing the nut body 121 outward. That is, the annular band 103 that has been pressed and deformed exhibits the same spring back action as the spring washer for the nut body 121. Therefore, in the through-hole structure 100, friction between the wall surface 101 a of the plate-like portion 101 (the contact surface of the inclined portion 105) and the pressure contact surface 121 a of the nut body 121, or between the nut body 121 and the bolt shaft 111. The force is improved, and the nut body 121 is prevented from rotating in the loosening direction. Note that at least a part of the periphery of the through hole 102 may bite into the press contact surface 121a of the press contact body 121 to improve the frictional force.

  Further, in the through hole structure 100 of FIG. 2B, the tip of the inclined portion 105 is in pressure contact with the outer surface of the bolt shaft 111. The end face of the opening edge 106 is engaged with the thread and the groove on the outer surface of the bolt shaft 111. As a result, a frictional force between the tip of the inclined portion 105 and the peripheral surface of the bolt shaft 112 is further added, and the rotation of the nut body 121 can be further suppressed, and the tip of the inclined portion 105 prevents the bolt shaft 111 from rotating. Can be locked. In addition, the bolt shaft 111 is restricted from moving in the axial direction with respect to the plate-like portion 101 by the engagement relationship. In other words, when the inclined portion 105 is pressed and deformed by the pressure contact body 121, the length of the oblique side of the inclined portion 105 is such that the tip of the inclined portion 105 tilted toward the bolt shaft 111 in the through hole 102 is pressed against the outer surface of the bolt shaft 111. The length L and the like are suitably determined.

  The first width W1 of the through-hole structure 100 of the present embodiment is preferably set to be approximately equal to the outer diameter D of the bolt shaft 111. Since the first width W1 and the outer diameter D are substantially equal, it is possible to prevent the bolt shaft 111 from rattling in the through-hole 102 in the step of inserting the bolt shaft 111 into the through-hole 102 and press-contacting the press-contact body 121, and In other words, the tip of the inclined portion 105 can be sufficiently pressed against the outer surface of the bolt shaft 111. For example, when the bolt shaft 111 is a three-quarter bolt, the outer diameter D is about 9.5 mm. Therefore, the first width W1 of the opening edge 106 is preferably larger than 9.5 mm, and the inclined portion 105 Width W3 when is completely tilted is smaller than 9.5 mm. More preferably, the first width W1 is substantially equal to 9.5 mm. Alternatively, when the bolt shaft 111 is a quarter-volt, the outer diameter D is about 12.7 mm. Therefore, the first width W1 of the opening edge 106 is preferably larger than 12.7 mm, and the inclined portion 105 Width W3 when is completely tilted is smaller than 12.7 mm. More preferably, the first width W1 is substantially equal to 12.7 mm.

  Moreover, it is preferable that the inclination | tilt angle (alpha) of the through-hole structure 100 exists in the range of 30 degrees-75 degrees. That is, when the inclination angle α is 30 ° or less, the degree of inclination of the inclined portion 105 at the time of pressing is reduced, and the springback action is weakened. Alternatively, if the inclination angle α is larger than 75 °, the tip surface of the inclined portion 105 may engage with the press contact body, and the inclined portion 105 may not be tilted well. Therefore, at the inclination angle α in the above range, the springback action by the inclined portion 105 can be more appropriately exhibited.

  2 is merely an example embodied for explaining the present invention, and the form of the bolt shaft and the press contact body is not limited to the bolt shaft 111 and the nut bodies 121 and 122 of FIG. Absent. For example, a bolt head may be adopted as the pressure contact body instead of the nut body 121, or the other nut body 122 may be omitted if one pressure contact body can be pressed against the plate-like portion. Moreover, in the through-hole structure of the present invention, as long as at least the inclined portion can be brought into contact with the pressure contact body, the dimensions can be arbitrarily designed without being restricted by the above formulas (1) and (2). And in the through-hole structure of this embodiment, although the through-hole 102 and the cyclic | annular band 103 are formed in planar view circular shape, it is not limited to the said embodiment, For example, planar view of a through-hole and an annular band is carried out. A polygonal shape is also possible. Furthermore, in the through-hole structure 100 of the present embodiment, the plate-like portion 101 is formed of a steel material (SUS material). However, other metal materials can be used as long as the spring back function can be exhibited. is there.

  FIG. 3 is a perspective view of a drilling tool 200 according to an embodiment for forming a through-hole structure 100 in which a through-hole 102 is drilled in a plate-like portion 101. The drilling tool 200 includes a main body 201, a grippable handle 202 extending from the main body 201, an operation lever 203 that is disposed to face the handle 202 and is pivotally supported on the main body 201 via a rotation shaft 204. A pair of male blades 211 and a female blade 214 for punching the plate-like portion 101, and a pair of inclined forming portions 212 and 215 for forming the annular band 103 (or the inclined portion 105), A pair of clamping parts 213 and 216 are provided for clamping the plate-like part 101 during drilling.

  As indicated by the phantom line in FIG. 3, the operating lever 203 moves up and down with respect to the main body 201 as the rotating shaft 204 slides up and down in the sliding groove 205. When the operation lever 203 is moved up and down, the lifting shaft 206 connected by the connecting portion 207 at the base end of the operation lever 203 is also moved up and down at the same time. A first pinching part 213, a first inclination forming part 212, and a male blade 211 are formed at the distal end of the elevating shaft 206 (in order from the base end side). That is, the male blade 211 approaches or separates from the female blade 214 by moving the operating lever 203 up and down along the sliding groove 205. Further, by rotating the operation lever 203 downward about the rotation shaft 204, the connecting portion 207 is rotated upward, and the lifting shaft 206 and the male blade 211 can be further raised.

  FIG. 4 is a partially enlarged perspective view showing the drilling blade 210, the inclination forming portions 212 and 215, and the pinching portions 213 and 216 of the drilling tool 200 of the present embodiment. The male blade 211 of the piercing blade 210 has a pointed tip that allows the plate-like portion 101 to be pierced, while the female blade 214 is formed in a cylindrical blade shape into which the male blade 211 can be inserted. That is, a pair of male blades 211 and female blades 214 can be fitted to punch a circular hole in plan view in the plate-like portion 101. And the 1st inclination formation part 212 is provided in the said peripheral edge of the male blade 211, and forms the cyclic | annular inclined surface. On the other hand, a second slope forming portion 215 is provided at the periphery of the tip of the female blade 214 to form an annular slope that can be adapted to the slope of the first slope forming portion 212. That is, as will be described later, the first and second inclined forming portions 212 and 215 overlap to form an annular band 103 having a desired inclined portion 105. Further, a first clamping unit 213 is formed as a horizontal plane around the base end of the first inclination forming unit 212. Similarly, a second clamping unit 216 is formed as a horizontal plane around the tip of the second inclination forming unit 215. That is, the first and second pinching portions 213 and 216 are arranged in parallel, and the plate-like portion 101 can be pinched or pinched close to each other when drilling.

  FIG. 5 is a partially enlarged sectional view of FIG. As shown in FIG. 4, the outer diameter of the male blade 211 is formed with a perforation width T1. In addition, the first inclination forming portion 212 has a distal end width T2 at the distal end portion 212a (at the peripheral edge of the proximal end of the male blade 211) and a proximal end width T3 larger than the distal end width T2 at the skirt portion 212b. . Further, the tip width T2 of the first inclination forming portion 212 is larger than the drilling width T1 of the male blade 211. The first inclination forming portions 212 are inclined at an inclination angle β. On the other hand, the inner diameter of the cylindrical female blade 214 is determined by the inner width T4. The inner width T4 is slightly larger than the male blade width T1 and substantially equal to the tip width T2 of the first inclined forming portion 212 so that the female blade 214 can insert the male blade 211. Further, the second inclination forming portion 215 has a tip width T5 on the side facing the male blade 211. The distal end width T5 is substantially equal to the proximal end width T3 of the male blade 211. The second inclination forming portions 215 are inclined at an inclination angle β. The widths T3 and T5 of the first and second inclined forming portions 212 and 215 are substantially equal to the second width W2 of the skirt portion 104 of the through-hole structure 100. In addition, the inclination angle β is substantially equal to the inclination angle α of the inclined portion 105 of the through-hole structure 100.

  Next, the process of forming the through-hole structure 100 in the pillar material P using the drilling tool 200 of the present embodiment will be described.

  As shown in FIG. 6A, the pillar material P is relatively moved between the drilling blades 210 (the male blade 211 and the female blade 214) of the drilling tool 200, and the female blade 214 is moved to the one wall surface 101 a side of the plate-like portion 101. The male blade 211 is disposed on the back surface 101b side of the plate-like portion 101. At this time, if the pillar material P is not fixed, the pillar material P is grasped and moved, or if the pillar material P is fixed, the drilling tool 200 is grasped and moved.

  Next, as shown in FIG. 6B, the operation lever 203 is raised along the sliding groove 205, and the male blade 211 at the tip of the lifting shaft 206 is brought into contact with the back surface 101 b of the plate-like portion 101. Subsequently, as shown in FIG. 6C, when the operating lever 203 is rotated downward from the contact state of FIG. 6B, the connecting portion 207 at the base end of the operating lever 203 is rotated upward, The male blade 211 rises further together with the lifting shaft 206. The tip of the male blade 211 passes through the plate-like portion 101 and is inserted into the female blade 214. Further, by applying a force to the operation lever 203 so that the plate-like portion 101 is strongly pinched by the first and second pinching portions 213 and 216, the inclined surfaces of the first and second tilt forming portions 212 and 215 are applied. The plate-like portion 101 was plastically deformed along the through-hole structure 100 (see FIG. 1) having an annular portion 103 (inclined portion 105).

  Note that the force applied to the operation lever 203 is doubled by the lever principle and converted to the rising force of the male blade 211, so that the plate-like portion 101 can be easily punched even with a weak force. Finally, the operation lever 203 is rotated to the opposite side and lowered along the sliding groove 205, and the punching blade 210 is detached from the plate-like portion 101.

  FIG. 7 is a partially enlarged cross-sectional view of the plate-like portion 101 (or the through-hole structure 100) in a state where the plate-like portion 101 is strongly clamped by the first and second clamping portions 213 and 216 of FIG. is there. As shown in FIG. 7, the male blade 211 disposed in the female blade 214 penetrates the plate-like portion 101 to form the through hole 102 opened with the first width W1. The first slope forming portion 212 and the second slope forming portion 215 pinch the periphery of the through hole 102, and the metal plate-like portion 101 is plastic along the slopes of the first and second slope forming portions 212 and 215. It is deformed. As a result, the inclined portion 105 is formed in the entire circumferential direction of the peripheral edge of the through hole 102 by the truncated cone-shaped inclined forming portions 212 and 215 having no irregularities on the inner and outer surfaces. Therefore, the through-hole structure 100 having the through-hole 102 and the annular band 103 formed so as to protrude over the entire periphery of the through-hole 102 is constructed by the drilling tool 200.

  More specifically, in the formation process of the through-hole structure 100, first, the tip of the male blade 211 holds the plate-like portion 101 in a state where the plate-like portion 101 is sandwiched between the first and second pinching portions 213 and 216. A perforation having a perforation width T1 (≈W3) was formed. Subsequently, the first and second slope forming portions 212 and 215 come into contact with the peripheral edge of the perforation, and the peripheral edge of the perforation rotates upward along the inclined surfaces of the first and second slope forming portions 212 and 215. As described above, the first and second inclination forming portions 212 and 215 plastically deform the plate-like portion 101. That is, the drilling width T1 drilled by the male blade 211 is expanded to the first width W1 (W1≈T2 in the present embodiment) with the rotational deformation of the drilling peripheral edge by the first and second inclined forming portions 212 and 215. Is done. That is, in the present embodiment, the first width W1 of the opening edge portion 106 is formed to be larger than the drilling width T1 (≈W3) of the male blade 211. In other words, the circumference (opening edge portion 106) formed by the tip portion of the inclined portion 105 is larger than the outer periphery of the male blade 211. Therefore, after the through hole 102 is formed, the male blade 211 can be prevented from engaging with the edge of the opening edge portion 106, and the male blade 211 can be easily pulled out from the through hole 102.

  That is, in this embodiment, the drilling width T1, the inclination angle β, and the base end width T3 of the drilling tool 200 determine the first width W1, the second width W2, the hypotenuse length L, and the inclination angle α of the through-hole structure 100. To do. Therefore, by designing the shape and size of the drilling blade 210 and the inclined forming portions 212 and 215 of the drilling tool 200 according to the shape and size of the bolt shaft of the support material to be fixed and the press-fit body arranged on the bolt shaft. The through hole structure 100 having a desired dimension can be formed. For example, by setting the drilling width T1 of the male blade 211 to be substantially equal to the outer diameter D of the bolt body 111, the opening edge portion 106 having the first width W1 into which at least the bolt shaft 111 can be inserted can be formed. Further, the drilling width T1 of the male blade 211 is set smaller than the outer diameter D of the bolt shaft 111, and the tilt angle β is set so that the drilling width T1 of the drilling formed by the male blade 211 is larger than the outer diameter D. By further setting the base end width T3, a through-hole structure that satisfies the above formulas (1) and (2) can be formed.

  Moreover, the drilling tool of this invention is not limited to the said embodiment. In the drilling tool 200 of the above embodiment, the inclined forming portions are formed on the peripheral edges of both the male blade and the female blade, but may be formed only on at least one of them. In this case, after the male blade perforates the plate-like portion, the peripheral edge of the plate-like portion is brought into pressure contact with any one of the inclined forming portions, so that an annular band (or inclined portion) is formed.

  Hereinafter, the effect of the through-hole structure 100 of one embodiment according to the present invention will be described.

  In the through hole structure 100 of the present embodiment, the peripheral edge of the through hole 102 protrudes from the wall surface 101 a of the plate-like portion 101 to form an annular band 103 having an inclined portion 105. When a pressure contact body (for example, a nut body 121, a bolt head 123, etc.) arranged on the bolt shaft 111 is pressed against the wall surface 101a of the plate-shaped portion 101 in order to fix the bolt shaft 111 to the plate-shaped portion 101. The pressure contact body 121 is brought into contact with the inclined portion 105, and the inclined portion 105 that can be tilted is pressed and deformed. That is, the metal springback generates a restoring force (or a resilient force) as the inclined portion 105 pressed and deformed by the press contact body 121 returns to the original state. The inclined portion 105 repels against the pressing of the nut body 121. That is, when the restoring force acts on the pressure contact surface 121 a of the pressure contact body 121, the frictional force between the pressure contact surface 121 a of the pressure contact body 121 and the wall surface 101 a of the plate-like portion 101 is improved. Then, the restoring force and the frictional force restrict the pressure contact force of the pressure contact body 121 to the plate-like portion 101 from being weakened, and as a result, loosening of the bolt shaft 111 and the plate-like portion 101 is prevented from loosening. That is, the tiltable tilting portion 105 exhibits a spring back action similar to that of a spring washer when pressed and deformed by the press contact body 121. Further, when the inclined portion 105 is pressed and deformed by the inclined portion 105, the distal end of the inclined portion 105 tilts and presses against the bolt shaft 111 in the through hole 102, so that the pressure contact force between the pressed portion 121 and the plate-like portion 101 is increased. In addition, the pressure contact force between the inclined portion 105 and the bolt shaft 111 can be exerted to fix the bolt shaft 111 to the plate-like portion 101 more firmly. In particular, in the through hole structure 100 of the present embodiment, the movement of the bolt shaft 111 in the axial direction is effectively restricted by fitting the tip of the inclined portion 105 into the thread groove on the outer surface of the bolt shaft 111. Therefore, according to the through-hole structure 100 of the present embodiment, even if the step of arranging the conventional spring washer is omitted, it is possible to construct a stronger support material fixing structure by exhibiting the spring back action. In addition, since one step of disposing the spring washer can be omitted, it is possible to simplify and speed up the work process for constructing the fixing structure between the bolt shaft 111 and the plate-like portion 101.

  However, the through-hole structure of the present invention is not limited to the above embodiment. For example, the through-hole structure 100 ′ in FIG. 8A has an annular band 103 ′ in which a part of the periphery of the through-hole 102 ′ is formed to protrude. That is, the annular band 103 ′ is formed with a notch 107 ′ cut out from the skirt 104 ′ to the opening edge 106 ′ together with the inclined portion 105 ′. Similarly, the through-hole structure 100 ″ of FIG. 8 (b) has an annular band 103 ″ that protrudes from a part of the periphery of the through-hole 102 ″. That is, the annular band 103 ′ has a skirt portion. A V-shaped cut 107 "is formed extending from 104 'to the opening edge 106'. The sharp notch 107 ′ or the sharp edge of the cut 107 ″ bites into the pressure contact surface 121a of the nut body 121 to further improve the loosening prevention effect of the nut body 121. In particular, unevenness such as sawtooth on the pressure contact surface of the pressure contact body. Is formed, the cut end fits into the irregularities, and the rotation of the press contact body can be more effectively suppressed.

  The drilling tool 200 'of Fig. 9 is configured to form the through-hole structure 100' of Fig. 8 (a). In other words, corresponding to the shape of the cutout 107 ′, a protrusion 217 ′ is projected from the peripheral wall of the male blade 211 ′ of the drilling blade 210 ′, and an accommodation groove 218 ′ is formed on the inner wall of the female blade 214 ′. It is recessed. Therefore, the through-hole structure 100 ′ including the notch 107 ′ in the annular band 103 ′ can be formed by the drilling tool 200 ′. By changing the shape of the protrusion 217 ', the cut 107 "shown in FIG. 8B can be formed.

  In the embodiment of FIG. 8, the area that occupies the annular band of notches or cuts is less than half, but it is also possible to make this more than half of the area of the annular band. Alternatively, it is also possible to form a plurality of notches or cuts in the annular band to form a plurality of inclined portions (for example, a pair of opposed inclined portions) discontinuous in the circumferential direction of the annular band (see FIG. Not shown). Alternatively, the through hole can be drilled in the plate-like portion so as to extend to the outside of the skirt (or the outside of the annular band) (not shown). Even in these cases, each part is defined by the above definition, and it is needless to say that the same effect (slack preventing action by metal spring back) is obtained as in the above embodiment.

  For example, as another example, in the through-hole structure 100 ′ ″ of FIG. 10, the area that occupies the annular band 103 ′ ″ is significantly smaller than that of the above-described embodiment, but the inclined portion 105 ″ that can be tilted similarly. 'Is arranged so as to be able to come into contact with the pressure contact body, and is configured to be able to exert a springback action. And in this through-hole structure 100 '' ', as shown in Drawing 10 (b), the area of the dotted line of the predetermined width surrounding bolt axis 111 (virtual line) is defined as annular belt 103' '', The annular band 103 ′ ″ has an inner circumferential ring inner edge 103a ′ ″ and an outer annular band outer edge 103 ′ ″. Further, the opening edge 106 ′ ″ that borders the space in which the bolt shaft 111 can be accommodated is composed of the tip of the inclined portion 105 ′ ″ and a part of the periphery of the through hole 102 ′ ″, and the bolt shaft 111 can be inserted through the opening edge 106 ′ ″. A first width W1. The inner edge 103a "" of the annular band includes a part of the opening edge 106 "". That is, in the present embodiment, most of the annular band 103 ″ ″ is located inward of the peripheral edge of the through hole. In other words, the present invention also assumes a form in which a part of the annular band (inner edge) is located inward of the peripheral edge of the through hole. Can play. In addition, this through-hole structure 100 "" can be formed by increasing the width of the protrusions and the receiving grooves of the drilling tool of FIG.

  Further, in the through hole structure 100 ″ ″ of FIG. 11, the inclined portion 105 ″ ″ is formed by making a pair of cuts 105a ″ ″ in a circular hole (a part of the through hole 102 ″ ″). That is, the inclined portion 105 "" that can be tilted is formed so as to protrude from the plate-like portion 101 "" outside the circular hole at a position where it can come into contact with the pressure contact body. In this through hole structure 100 ″ ″, as shown in FIG. 11 (b), a dotted line region having a predetermined width surrounding the bolt shaft 111 (imaginary line) is defined as an annular band 103 ″ ″ ′. The reference numeral 103 "" has an inner ring-side inner edge 103a "" and an outer ring-side outer band 103 "". Further, the opening edge portion 106 ″ ″ that borders the space in which the bolt shaft 111 can be accommodated is composed of a part of the inclined portion 105 ″ ″ tip and the periphery of the through hole 102 ″ ”and can be inserted through the bolt shaft 111. It has a width W1. The annular belt inner edge 103a "" includes a part of the opening edge 106 "". That is, in the present embodiment, a part of the annular band 103 ″ ″ (or the inner edge 103a ″ ″) is located outside the through hole 102 ″ ″. That is, the present invention also assumes a form in which a part of the annular band (inner edge) is located outside the peripheral edge of the through hole, but in this configuration, the same effect as that of the above-described embodiment is obtained. Can play. The through-hole structure 100 "" can be formed by changing the shape of the drilling blade of the drilling tool in FIG. Alternatively, a through-hole structure 100 ″ ″ (or an inclined portion 105 is formed by drilling a circular hole, forming a pair of cuts on the outer periphery thereof, and bending the inner plate-like portion of the pair of cuts to the front side. "") Can be formed.

  Alternatively, in another example of the through-hole structure (not shown), a plurality of inclined portions are formed, one inclined portion is formed to project from one surface of the plate-shaped portion, and the other inclined portion is formed to project from the other surface. It is also possible. In other words, the plurality of inclined portions may not protrude in the same direction. In this case, when the plate-like portion is clamped by the pair of clamping bodies, each inclined portion can exert a springback action on each clamping body. That is, it is possible to effectively prevent both the pinching bodies from rotating.

Example 1
12 and 13 show a support material fixing structure 10 in which a support material 110 having a bolt shaft 111 is fixed to a column wall (plate-shaped portion) 101 of a column material P. FIG. As shown in FIGS. 12 and 13, the through hole structure 100 is installed in the pillar material P, and the annular band 103 projects from the wall surface 101 a on the inner surface side of the pillar material P. Further, the support member 110 is a bar member on which a bolt shaft 111 is formed over the entire length. A pair of nut bodies 121 and 122 are screwed to both ends of the bolt shaft 111 so that the bolt shaft 111 (supporting material 110) passes through the through hole 102 and clamps the column wall 101.

  With reference to FIG. 14, the method of constructing the support material fixing structure 10 will be described. First, as described above, the through-hole structure 100 was formed on the column wall (plate-shaped portion) 101 of the column material P. Next, as shown in FIG. 14A, the bolt shaft 111 (support material 110) is inserted into the through hole 102, and a pair of nut bodies 121 are screwed from both ends of the bolt shaft 111. Then, one or both of the pair of nut bodies (screwed bodies) 121 and 122 are screwed and brought close to each other. Subsequently, the pair of nut bodies 121 and 122 are tightened so that at least a part of the inclined portion 105 is pressed and deformed by the nut bodies 121 and 122, and are brought into pressure contact with both surfaces 101a and 101b of the column wall 101, as shown in FIG. The bolt shaft 111 is fixed to the column wall 101 as shown in FIG. As a result, in the support member fixing structure 10 in FIG. 14B, the annular band 103 of the through-hole structure 100 is pressed and deformed as described with reference to FIG. Is demonstrating. In the support material fixing structure 10, a washer or the like may be separately added to one or both sides of the through hole 102. Further, in this embodiment, the inclined portion 105 protrudes on the inner side of the U-shaped column member P, but it can be formed on the outer side of the column member P depending on the situation.

(Example 2)
FIG. 15 shows a support material fixing structure 11 in which a support material 110 that supports the box B is constructed between a pair of pillar materials P in the wall space. In the support material fixing structure 11, the through-hole structure 100 is formed in each of the pillar materials P. In addition, this support material fixing structure 11 applies the through-hole structure of this invention to the fixing structure of patent document 1. FIG.

  As shown in FIG. 16A, the annular band 103 of each through-hole structure 100 protrudes from the wall surface 101a with which the nut body 121 is pressed. That is, they project in opposite directions. In the support material fixing structure 11, the support material 110 on which the bolt shaft 111 is formed has one through-hole 102 formed in each column wall (plate-shaped portion) 101 of the pair of column materials P as one bolt shaft. A pair of nut bodies (screwed bodies) 121 are screwed from both ends of the bolt shaft 111 so as to clamp the pair of column members P from the outside. As a result, as shown in FIG. 16 (b), each of the through-holes is subjected to a pinching pressure in which the pair of nut bodies 121 are in pressure contact with the peripheral edges of the through-holes 102 of the pair of column members P and sandwich the pair of column members P, respectively. Each of the annular bands 103 (inclined portions 105) of the structure 100 is pressed and deformed. As a result, in the support member fixing structure 11 of FIG. 16B, the annular band 103 of the pair of through-hole structures 100 is respectively pressed and deformed as described with reference to FIG. The spring back action is demonstrated.

  In the present embodiment, the pair of column members P are sandwiched and fixed by the pair of nut bodies 121, but the method of fixing the support member 110 to the pair of column members P is not limited to this. For example, the pillar wall 101 of one pillar member P is sandwiched from both sides by a pair of nut bodies 121 and 122 to fix one end (bolt shaft 111) of the support member 110 to one pillar member P, and the other pillar member By inserting the other end (not necessarily a bolt shaft) of the support member 110 into a through-hole (not necessarily including an inclined portion) drilled in the pillar wall 101 of the P, The support material 110 can be fixed (not shown).

Example 3
In the support material fixing structure 12 of FIG. 17, a box 112 as a support material is formed at a box body 112a, a protrusion 112b integrally protruding from the box body 112a, and a tip of the protrusion 112b. And a small-diameter bolt shaft 113. A through hole structure 100 is formed in the pillar material P, and the box 112 is fixed to the pillar material P through the through hole structure 100.

  As shown in FIG. 18 (a), the annular band 103 of the through-hole structure 100 protrudes from the wall surface 101a of the column wall (plate-shaped portion) 101 to which the nut body 121 is pressed, and projects to the opposite side of the box 112. Yes. Then, the bolt shaft 113 of the box 112 is inserted into the through hole 102 from the back surface 101 b of the column wall 101, and the nut body 121 is screwed to the tip of the bolt shaft 113. Then, by tightening the nut body 121, the pressure contact surface 121a of the nut body 121 and the end surface (at the periphery of the bolt shaft 113) of the protrusion 112b sandwich the column wall 101 as shown in FIG. As a result, in the support member fixing structure 12 of FIG. 18B, the annular band 103 of the through-hole structure 100 is pressed and deformed as described with reference to FIG. Is demonstrating.

Example 4
The support material fixing structure 13 in FIG. 19 uses a bolt head 123 formed integrally with a bolt shaft 114 as a pressure contact body. In the support material fixing structure 13, a plate material 115 having a screw hole 116 into which the bolt shaft 114 can be screwed is fixed to the plate-like portion 101. That is, the support material of this embodiment includes a plate material 115 and a separate bolt shaft 114. Then, as shown in FIG. 19B, the bolt shaft 114 passes through the through hole 102, and the pressure contact surface 123 a of the bolt head portion 123 is in pressure contact with the annular band 103 on the wall surface 101 a of the plate-like portion 101. The shape portion 101 and the plate material 115 are fixed. As a result, in the support member fixing structure 13 of FIG. 19B, the annular band 103 of the through-hole structure 100 is pressed and deformed as described with reference to FIG. It is working.

  Therefore, as described in a plurality of embodiments, the through-hole structure of the present invention can be widely applied without being limited to the fixing structure in various environments where the washer is used to exert a springback action. It is. In addition, it cannot be overemphasized that each form of the through-hole structure mentioned above and the structure of Examples 1-4 can be combined and implemented.

  The present invention is not limited to the above-described embodiments and modifications, and can be implemented in various modes as long as they belong to the technical scope of the present invention.

10-13 Support material fixing structure 100 Through-hole structure 101 Plate-like part (column wall)
102 Through-hole 103 Annular band 103a Annular band inner edge 104 Bottom 105 Inclined part 106 Open edge 107 'Notch 107 "Notch 110 Support material 111 Bolt shaft 121 One nut body (screwed body, pressure contact body)
121a Pressure contact surface 122 The other nut body (screwed body, pressure contact body)
122a Pressure contact surface 123 Bolt head (pressure contact)
200 Drilling tool 201 Main body 202 Handle 203 Operation lever 204 Rotating shaft 205 Sliding groove 206 Lifting shaft 207 Connecting portion 210 Drilling blade 211 Male blade 212 First inclined forming portion 213 First clamping portion 214 Female blade 215 Second inclined formation Part 216 2nd clamping part P Column material W1 1st width | variety (tilt formation part front end width)
W2 2nd width (inclination formation base end width)
L hypotenuse length α inclination angle T1 drilling width (male edge diameter)
T2 Tip width T3 of the first slope forming portion T3 Base width T4 of the first slope forming portion Inner width (female blade inner diameter)
β Inclination angle D Bolt outer diameter

Claims (15)

A through-hole structure for fixing the bolt shaft via a pressure contact body arranged on the bolt shaft,
A through-hole is drilled in a metal plate-like part,
An annular band surrounding the bolt shaft inserted through the through hole is configured,
At least a part of the annular band is provided with an inclined portion that protrudes from the plate-like portion in an inclined posture and can be inclined with respect to the plate-like portion,
The inner edge of the annular band including the tip of the inclined portion constitutes at least a part of an opening edge having a first width through which the bolt shaft can be inserted,
When the pressure contact body is brought into pressure contact with the plate-like portion so as to fix the bolt shaft inserted into the through hole to the plate-like portion, at least a part of the inclined portion is arranged to be able to contact the pressure contact body. A through-hole structure characterized by   The inclined side length of the inclined portion is determined such that when the inclined portion is pressed and deformed by the pressure contact body, the distal end of the inclined portion is inclined toward the bolt shaft side and pressed against the bolt shaft in the through hole. The through-hole structure according to claim 1, wherein:   The through-hole structure according to claim 1 or 2, wherein a part of the annular band is formed with a notch or cut extending from a base end to a tip end of the inclined portion.   The through-hole structure according to any one of claims 1 to 3, wherein the press contact body is a nut body screwed onto the bolt shaft. A support material fixing structure in which a support material having at least one bolt shaft is fixed to the column material through a through-hole drilled in a metal column wall of the column material,
An annular band surrounding the bolt shaft inserted through the through hole is configured,
At least a part of the annular band is formed to project from the plate-like portion in an inclined posture, and an inclined portion that can tilt with respect to the column wall is provided,
The inner edge of the annular band including the tip of the inclined portion constitutes at least a part of an opening edge having a first width through which the bolt shaft can be inserted,
At least one screwed body is screwed to the bolt shaft inserted through the through hole, and the screwed body is pressed against the column wall, whereby the support material is fixed to the column material. ,
At least a part of the inclined portion is pressed and deformed by the screwed body toward the pillar wall side.   The support material fixing structure according to claim 5, wherein the tip of the inclined portion tilts toward the bolt shaft side and presses against the bolt shaft.   The support material fixing structure according to claim 5 or 6, wherein a pair of screwed bodies are screwed onto the bolt shaft, and the pillar wall is clamped by the pair of screwed bodies. . A support material fixing structure in which the support material is fixed across a pair of pillar materials,
The support member penetrates through holes formed in the column walls of the pair of column members with the at least one bolt shaft, and a pair of screwed bodies sandwich the pair of column members from the outside. Or screwed to the bolt shaft so as to press the column wall of at least one column member of the pair of column members from both sides,
The pair of screwed bodies are in pressure contact with the peripheral edges of the through holes of the pair of column members, or the pair of screwed bodies are respectively connected to the peripheral edges of the through holes of the column walls to be clamped from both sides of the column walls. The support material fixing structure according to claim 5 or 6, wherein the inclined portion that is pressed and deformed is pressed and deformed. A method of fixing a support material having at least one bolt shaft to a pillar material,
A through hole for inserting the support member is formed in the metal column wall of the column member, and at least a part of an annular band surrounding the bolt shaft inserted through the through hole is formed from the column wall. A step of forming an inclined portion protruding in an inclined posture, wherein an inner edge of the annular band including a tip of the inclined portion constitutes at least a part of an opening edge portion having a first width through which the bolt shaft can be inserted. Step, and
Inserting the bolt shaft through the through hole, and screwing a screwed body into the bolt shaft;
The screw body is screw-rotated, and the screw body is pressed against the column wall so that at least a part of the inclined portion is pressed and deformed by the screw body, and the bolt shaft is fixed to the column wall. And steps to
A method for fixing a support material to a pillar material, comprising:   The step of fixing the bolt shaft to the column wall includes tilting the inclined portion toward the bolt shaft side by contact of the screwed body, and pressing the tip of the inclined portion against the outer surface of the bolt shaft. The method for fixing the support material according to claim 9 to a pillar material. A drilling tool for forming a through hole in the plate-like part in order to fix the bolt shaft to a metal plate-like part via a pressure contact body arranged on the bolt shaft,
It comprises a male blade for punching out the plate-like portion and a female blade into which the male blade can be inserted, and the plate-like portion is punched by sandwiching the plate-like portion between the pair of male blades and female blade. A drilling blade for,
The plate-like portion is provided on at least a part of an annular band that is installed on at least one of the base end periphery of the male blade or the front end periphery of the female blade and surrounds the bolt shaft inserted through the through hole in the drilling step. An inclination forming portion for projecting and forming an inclinable inclination portion inclined with respect to the

An inner edge of the annular band including the tip of the inclined portion constitutes at least a part of an opening edge portion having a first width through which the bolt shaft can be inserted, and the first width is larger than a diameter of the bolt shaft. A drilling tool characterized by being large and having a width that allows the pressure contact body arranged on the bolt shaft to abut against at least a part of the inclined portion.   The inclined part formed by the inclined forming part is formed in a part or the whole of the circumferential direction of the peripheral edge of the through hole, and the circumference formed by the tip of the inclined part is larger than the outer periphery of the male blade. The drilling tool according to claim 11, wherein:   The inclined forming portion is configured so that, when the inclined portion is pressed and deformed by the press contact body, the tip of the inclined portion tilts toward the bolt shaft side and presses against the bolt shaft in the through hole. The drilling tool according to claim 11 or 12, wherein a slope length from a base end to a tip end is determined.   The diameter of the said male blade is substantially the same as the outer diameter of the said bolt axis | shaft, The drilling tool as described in any one of Claim 11 to 13 characterized by the above-mentioned.   The perforation width of the perforation formed by the perforation blade is smaller than the outer diameter of the bolt shaft, and is expanded to the first width by the inclined forming portion. The drilling tool according to item.

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