WO2010110141A1 - 溶接ボルト - Google Patents
溶接ボルト Download PDFInfo
- Publication number
- WO2010110141A1 WO2010110141A1 PCT/JP2010/054529 JP2010054529W WO2010110141A1 WO 2010110141 A1 WO2010110141 A1 WO 2010110141A1 JP 2010054529 W JP2010054529 W JP 2010054529W WO 2010110141 A1 WO2010110141 A1 WO 2010110141A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- welding
- contact
- insertion hole
- head
- welding bolt
- Prior art date
Links
- 238000003466 welding Methods 0.000 title claims abstract description 160
- 238000003780 insertion Methods 0.000 claims description 78
- 230000037431 insertion Effects 0.000 claims description 78
- 239000000463 material Substances 0.000 description 51
- 230000002093 peripheral effect Effects 0.000 description 17
- 230000000694 effects Effects 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000155 melt Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000010273 cold forging Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
- F16B37/06—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting
- F16B37/061—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of welding
Definitions
- the present invention relates to a welding bolt.
- a welding projection is provided on the seating surface of the bolt head, and a guide portion that fits into an insertion hole formed in a vehicle body part (plate material) for an automobile is provided at a lower neck portion of the bolt.
- a vehicle body part plate material
- Patent Document 1 Japanese Patent Document 1
- the welding bolt described in Patent Document 1 is welded to a plate material as follows. First, the bolt is inserted into the insertion hole so that the guide portion fits into the insertion hole and the welding projection comes into contact with the plate material surface. Next, the bolt and the plate material inserted into the insertion hole are sandwiched so as to be pressed by the upper and lower electrodes. Then, a welding current is applied to the upper and lower electrodes while being sandwiched between the upper and lower electrodes, so that the bolts are pressure-bonded to the plate material and welded while melting the welding protrusions.
- an R-shaped curved portion is formed at the boundary between the guide portion and the head for reasons of processing and strength of the bolt. Therefore, when the bolt is welded, the R-shaped curved portion is formed. May get on the surface of the plate.
- the bolt is welded in a state inclined with respect to the plate material. For this reason, it has been difficult to increase the welding accuracy of the bolts to the plate material in the above-described prior art.
- an object of the present invention is to obtain a welding bolt capable of improving the welding accuracy.
- the present invention is a welding bolt, which is provided on one end side, a head portion provided with a welding projection on a seat surface, a shaft portion provided on the other end side, and between the head portion and the shaft portion. And a guide portion that is inserted into an insertion hole formed in the member to be welded.
- a groove portion is formed in a boundary portion between the seat surface of the head portion and the side surface of the guide portion. .
- the groove portion is formed in the boundary portion between the side surface of the guide portion and the seat surface of the head portion, so that the boundary between the side surface of the guide portion and the seat surface of the head portion is formed at the portion where the groove portion is formed.
- An R-shaped curved surface portion is not formed in the portion. For this reason, it is possible to prevent the R-shaped curved surface portion from climbing on the surface of the member to be welded during welding and welding the welding bolt in a tilted state with respect to the member to be welded. As a result, it is possible to improve the welding accuracy of the welding bolt to the member to be welded.
- FIG. 1 is a perspective view of a welding bolt according to a first embodiment of the present invention.
- FIG. 2 is a longitudinal sectional view of the welding bolt according to the first embodiment of the present invention.
- FIG. 3 is a cross-sectional view of the welding bolt according to the first embodiment of the present invention cut at the root portion of the guide portion.
- Drawing 4 is an explanatory view showing typically the manufacture state of the welding bolt concerning a 1st embodiment of the present invention.
- FIG. 5 is an explanatory view showing a state when the welding bolt according to the first embodiment of the present invention is welded to a plate material.
- Drawing 6 is a figure explaining the outline shape of the base part of the guide part of the welding bolt concerning a 1st embodiment of the present invention.
- FIG. 1 is a perspective view of a welding bolt according to a first embodiment of the present invention.
- FIG. 2 is a longitudinal sectional view of the welding bolt according to the first embodiment of the present invention.
- FIG. 3 is a cross-sectional
- FIG. 7 is a perspective view of a welding bolt according to the second embodiment of the present invention.
- FIG. 8 is a front view of a welding bolt according to the second embodiment of the present invention.
- 9 is a cross-sectional view taken along line IX-IX in FIG.
- FIG. 10 is an explanatory view showing a state when the welding bolt according to the second embodiment of the present invention is welded to the plate material.
- FIG. 11 is a perspective view of a welding bolt according to the third embodiment of the present invention.
- FIG. 12 is a front view of a welding bolt according to a fourth embodiment of the present invention.
- 13 is a cross-sectional view taken along line XIII-XIII in FIG.
- FIG. 14 is a front view of a welding bolt according to a fifth embodiment of the present invention.
- FIG. 15 is a perspective view of a welding bolt according to a sixth embodiment of the present invention.
- FIG. 16 is a perspective view of a welding bolt according to a seventh embodiment of the present invention.
- FIG. 17 is a perspective view of a welding bolt according to an eighth embodiment of the present invention.
- FIG. 18 is a perspective view of a welding bolt according to the ninth embodiment of the present invention.
- the welding bolt 1 is provided on the head 2 provided on one end side (lower side in FIG. 2) in the central axis X direction and on the other end side (upper side in FIG. 2), and a screw groove 4a is formed.
- the positioning is performed when the welding bolt 1 is inserted in contact with an insertion hole 11 formed between the shaft portion 4 and the head portion 2 and the shaft portion 4 and formed in a plate material (member to be welded) 10 described later.
- the welding bolt 1 is formed by cold forging a material such as carbon steel for cold forging using an upper die 40 and a lower die 41 (see FIG. 4).
- the head 2 is formed in a substantially disk shape, and the welding projection 3 that melts and welds to the plate member 10 when the welding current is applied to the seating surface 2 a of the head 2.
- the welding projection 3 that melts and welds to the plate member 10 when the welding current is applied to the seating surface 2 a of the head 2.
- three triangular columnar welding projections 3 extending in the circumferential direction are provided at equal intervals along the circumferential direction of the seating surface 2a.
- the shaft portion 4 has a solid cylindrical shape centered on the central axis X, and a screw groove 4a is formed on the side surface.
- the screw groove 4 a is provided only at the root portion of the shaft portion 4.
- the guide part 5 has a non-circular outline shape in front view of at least the head 2 side edge, that is, the edge of the root part 5d, and a plurality of top parts 5b are formed.
- the contour shape of the end edge of the root portion 5d in a front view is a triangular equidiameter strain circle.
- the contour shape of the end edge of the root portion 5d in the front view has a shape that is drawn as follows.
- the part drawn with the radius R4 corresponds to the top part 5b of the guide part 5
- the part drawn with the radius R5 corresponds to the side part 5c.
- the center X corresponds to the center axis X of the welding bolt 1.
- this triangular equal-diameter strain circle a virtual circle C1 having a radius R1 circumscribing each apex 5b can be drawn, and this virtual circle C1 is the contour shape of the insertion hole 11 of the plate 10 in the present embodiment. It is equivalent to.
- the plurality of top portions 5b have contact portions 5f that contact the inner surface 11a of the insertion hole 11 of the plate member 10, and the contact points between the top portion 5b and the virtual circle C1 in FIG. This corresponds to 5f.
- the radius of curvature at the contact portion 5f of the top portion 5b is made smaller than the radius of curvature at the portion where the contact portion of the insertion hole 11 contacts.
- the contour shape in the front view of the guide portion 5 is a triangular equidiameter strain circle as in the present embodiment, so that the contact portion of the top portion 5b (the top portion 5b and the virtual circle C1) is formed as shown in FIG. R4, which is the radius of curvature at 5f, can be made smaller than R1, which is the radius of curvature of the virtual circle C1 (corresponding to the radius of curvature of the portion where the abutting portion of the insertion hole 11 abuts).
- the top portion 5b is formed on the inner surface 11a of the insertion hole 11 in the direction of the central axis X. Can be in line contact.
- the guide portion 5 is formed with a tapered portion 5g having a diameter reduced from the root portion 5d side toward the distal end portion 5e side in the central axis X direction.
- the shape of the guide portion 5 is such that the contour shape at the root portion 5d is an isosceles circular shape, and the contour shape gradually approaches a perfect circle as it goes toward the tip portion 5e. It is said.
- the guide portion 5 is formed such that the contour shape of the tip portion 5e is a perfect circle that is inscribed in the equal-diameter strain circle at the root portion 5d. That is, the guide portion 5 has the largest taper angle at the contact portion 5f, and the taper angle gradually decreases as the guide portion 5 moves toward the side portion 5c.
- the taper angle is formed to be zero at a portion in contact with the circle.
- the top portion 5b is connected to the inner surface 11a of the insertion hole 11. Can be brought into line contact in the circumferential direction.
- the radius of curvature at the top portion 5b is made smaller than the radius of curvature at the portion where the abutting portion of the insertion hole 11 abuts, and at least the apex portion 5b of the guide portion 5 from the root portion 5d side in the central axis X direction.
- the contact between the top portion 5b and the inner surface 11a of the insertion hole 11 can be a point contact.
- the top portion 5b and the inner surface 11a of the insertion hole 11 are in point contact at three points of the contact portion 5f of each top portion 5b, and the welding bolt 1 is inserted into the insertion hole 11 by this contact portion 5f. Positioning when inserted through the is performed.
- the three contact portions 5f are provided so as to be positioned at the intermediate portion in the circumferential direction of the two welding projections 3 in order to reduce a current value of a shunt current described later.
- the welding bolt 1 includes a boundary portion between the side surface 5a of the guide portion 5 and the seating surface 2a of the head 2 (intersection line between the seating surface 2a and the side surface 5a: in this embodiment, the root portion 5d). 7 has a groove 6 formed on the top surface 2b side in the central axis X direction.
- the groove part 6 is provided over the perimeter along the boundary part 7 of the side surface 5a of the guide part 5, and the seat surface 2a of the head part 2.
- FIG. At this time, the groove 6 is drilled to include the virtual circle C1 shown in FIG. That is, the groove portion 6 is formed so that the peripheral edge of the insertion hole 11 is included in the groove portion 6 in a front view in a state of being inserted into the plate member 10.
- the substantially cone-shaped recessed part 2c whose depth becomes deep as it goes to the center from the outer peripheral side is formed in the center part by the side of the top
- a mortar-shaped concave surface 2d is formed in the central portion of the top surface 2b, and in the outer peripheral portion of the top surface 2b.
- a substantially annular flat surface 2e is formed.
- the recess 2c is formed so that the diameter of the recess 2c on the flat surface 2e side (opening diameter of the recess 2c) is smaller than the diameter of the outer peripheral edge of the groove 6.
- the diameter of the concave portion 2c on the flat surface 2e side is the shortest diameter of the isosceles strain circle drawn by the boundary portion 7 between the side surface 5a of the guide portion 5 and the seating surface 2a of the head portion 2. You may make it become smaller than (diameter of an inscribed circle with an equal diameter distortion circle).
- the opening of the recess 2c may be formed in a region of an isodiametrically distorted circle (a region drawn by the boundary portion 7) in a front view.
- the recess 2c is formed so that the apex angle ⁇ is about 150 ° (obtuse angle).
- the recess 2c and the groove 6 are formed as a die for cold forging, an upper die 40 having a substantially conical protrusion (a protrusion corresponding to the shape of the recess 2c) 40a and a substantially donut-shaped protrusion. It can be formed by using the lower mold 41 in which the portion (projecting portion having a shape corresponding to the shape of the groove portion 6) 41a is formed.
- the shaft portion 4 and the guide portion 5 of the welding bolt 1 are inserted into the insertion holes 11 of the plate material 10.
- the welding protrusion 3 is brought into contact with the surface 10a of the plate member 10 through insertion.
- the top part 5a of the guide part 5 contacts the inner surface 11a of the insertion hole 11 at the contact part 5f, and the welding bolt 1 is positioned.
- the upper electrode 20 is brought into contact with the top surface 2 b of the head 2, and the lower electrode 21 is brought into contact with the back surface side of the plate member 10.
- the lower electrode 21 is formed with a through hole 21a having a diameter larger than that of the insertion hole 11, and the lower electrode 21 has a through hole 21a that is a shaft portion of the welding bolt 1 as shown in FIG. 4 and the guide portion 5 are in contact with the back side of the plate 10.
- the welding bolt 1 and the plate material 10 inserted into the insertion hole 11 are sandwiched and pressed by the upper electrode 20 and the lower electrode 21.
- the contact portion 30 between the welding projection 3 and the plate member 10 is crushed to form the contact surface 31.
- the electrical resistance in the contact part 30 falls by the contact area of the welding protrusion 3 and the board
- the contact portion 5f of the top portion 5b is maintained in point contact regardless of the formation of the contact surface 31 of the weld projection, so that the resistance value at the contact portion 5f hardly changes and the contact portion 5f Continue to maintain a value higher than the resistance value.
- the shunt current 23 bypasses the concave portion 2c as shown in FIG. Will flow.
- the groove portion 6 is formed in the boundary portion 7 between the side surface 5a of the guide portion 5 and the seating surface 2a of the head portion 2, so that the guide portion 5 is formed in the portion where the groove portion 6 is formed.
- An R-shaped curved surface portion is not formed at the boundary portion 7 between the side surface 5a of the head 2 and the seating surface 2a of the head 2. Therefore, an R-shaped curved surface portion rides on the surface 10a of the plate material (member to be welded) 10 during welding, and the welding bolt 1 is prevented from being welded in an inclined state with respect to the plate material (member to be welded) 10. can do. As a result, it is possible to improve the welding accuracy with respect to the plate material (member to be welded) 10 of the welding bolt 1.
- the radius of curvature at the contact portion 5f of the top portion 5b is made smaller than the radius of curvature at the portion where the contact portion 5f of the insertion hole 11 contacts, so that the inner surface 11a of the insertion hole 11 Since the contact with the top portion 5b is a line contact in the bolt axis X direction, the contact area with the inner surface 11a of the insertion hole 11 of the contact portion 5f can be reduced. As a result, it is possible to reduce the current value of the shunt current (shunt) 23 that flows through the contact portion 5f during welding, and to suppress the welding strength from being varied.
- At least the plurality of top portions 5b are provided with the taper portion 5g having a diameter reduced from the root portion 5d side toward the tip portion 5e side, whereby contact between the inner surface 11a of the insertion hole 11 and the top portion 5b. Since it becomes the line contact of the circumferential direction, the contact area with the inner surface 11a of the insertion hole 11 of the contact part 5f can be made small. As a result, it is possible to reduce the current value of the shunt current (shunt) 23 that flows through the contact portion 5f during welding, and to suppress the welding strength from being varied.
- the radius of curvature at the top portion 5b is made smaller than the radius of curvature at the portion where the abutting portion of the insertion hole 11 abuts, and at least the apex portion 5b of the guide portion 5 from the root portion 5d side in the central axis X direction. Since the contact between the top 5b and the inner surface 11a of the insertion hole 11 can be made point contact by forming the tapered portion 5g that is reduced in diameter toward the side, the shunt current that flows through the contact portion 5f during welding The current value of (divided flow) 23 can be further reduced, and it is possible to further suppress variation in welding strength.
- the substantially conical concave portion 2c whose depth becomes deeper from the outer peripheral side toward the center is formed in the central portion of the head 2 on the top surface 2b side. Therefore, the upper electrode 20 can be brought into contact with only the flat surface 2e on the outer peripheral side of the top surface 2b without contacting the concave surface 2d of the top surface 2b. As a result, the welding current 22 can flow from the upper electrode 20 to the welding projection 3 at the shortest distance, and the shunt current 23 can flow to bypass the central portion (concave surface 2d) of the top surface 2b. The current value of the diversion current (diversion) 23 that flows through the contact portion 5f during welding can be further reduced. That is, the upper electrode 20 is not brought into contact with the concave surface 2d of the top surface 2b, but is brought into contact only with the flat surface 2e on the outer peripheral side of the top surface 2b, whereby the diversion can be further suppressed.
- the current value of the shunt current (shunt current) 23 can be reduced. Therefore, the current value of the current flowing through the upper electrode 20 and the lower electrode 21 is estimated in advance. Can be set low without any problem. Thereby, generation
- a recess 2c is formed in the central portion of the head 2 on the top surface 2b side, and a groove 6 is formed in a boundary portion 7 between the side surface 5a of the guide 5 and the seat surface 2a of the head 2.
- the guide part 5 can be formed with higher accuracy.
- the upper die 40 having a substantially conical protrusion (a protrusion corresponding to the shape of the recess 2c) 40a and a substantially donut-shaped protrusion (a protrusion corresponding to the shape of the groove 6) are formed.
- the welding bolt 1 is manufactured (forged) by using the lower die 41 on which the 41a is formed.
- the substantially disc-shaped head 2 is compared with a case where a mold in which the protrusion 40a and the protrusion 41a are not formed is used (when the groove 6 and the recess 2c are not formed). It is possible to suppress the plastic flow of the material (such as carbon steel for cold heading) in the outer peripheral direction of the steel and to promote the plastic flow of the material in the axial direction (see FIG. 4). ).
- the substantially conical protrusion (protrusion having a shape corresponding to the shape of the recess 2c) 40a increases the pressing force in the axial direction of the guide portion 5 forming portion, and the plasticity of the material in the axial direction. Flow can be promoted.
- the material is prevented from flowing plastically toward the outer periphery of the head 2 by the substantially donut-shaped protrusion (protrusion having a shape corresponding to the shape of the groove 6) 41a.
- the plastic flow of the material in the outer peripheral direction of the head 2 can be further promoted.
- the substantially conical protrusion (protrusion having a shape corresponding to the shape of the recess 2c) 40a is pressed.
- the opening of the recess 2 c is made smaller than the diameter of the outer peripheral edge of the groove 6, the material can be appropriately moved by the guide portion 5.
- a substantially conical protrusion (a protrusion corresponding to the shape of the recess 2c). ) 40a presses the area of the isosceles strain circle (the area drawn by the boundary portion 7), so that the material can be appropriately moved by the guide portion 5.
- the concave portion 2c is formed so that the apex angle ⁇ is an obtuse angle, the axial component force of the pressing force by the inclined portion 40b of the substantially conical protrusion 40a can be made larger than the component force in the outer peripheral direction. it can. As a result, the material can be plastically flowed in the axial direction more efficiently.
- the groove 6 is provided over the entire circumference along the boundary portion 7 between the side surface 5 a of the guide portion 5 and the seating surface 2 a of the head portion 2, whereby the insertion hole 11 is formed in the plate material 10. Even when a burr has occurred around the insertion hole 11 during the formation, the burr can be accommodated in the groove 6 provided on the entire circumference during the welding operation. It can suppress that the made burr
- the outer periphery of the guide portion becomes a smooth curve by making the contour shape an isosceles circular shape, wear of the dies (upper die 40 and lower die 41) used in manufacturing the weld bolt is suppressed. The life of the mold can be extended.
- the shape of the side surface of the mold is further increased by changing the shape of the guide portion 5 from a circular shape to a perfect circle gradually from the root portion 5d toward the tip portion 5e.
- a smooth shape can be obtained, wear of the mold used for manufacturing the weld bolt can be further suppressed, and the life of the mold can be further extended.
- the contour shape of the guide portion a triangular shape, the advantage that centering is easy and stable support with a minimum number can be achieved, so that the occurrence of diversion can be minimized. There are also advantages.
- a welding bolt 1A according to the present embodiment is provided on a head 2A provided on one end side (lower side in FIG. 9) in the central axis X direction and on the other end side (upper side in FIG. 9), and a screw groove 4a is formed. Positioning when the welding bolt 1A is inserted in contact with an insertion hole 11 formed between the shaft portion 4A, the head portion 2A and the shaft portion 4A and formed in a plate material (member to be welded) 10 described later. And 5 A of guide parts to perform.
- the welding bolt 1A is formed by cold forging a material such as carbon steel for cold heading using a mold (not shown).
- the head 2A is formed in a substantially disk shape, and a welding projection 3A that melts and welds to the plate 10 when a welding current is applied to the seating surface 2a of the head 2A.
- a welding projection 3A that melts and welds to the plate 10 when a welding current is applied to the seating surface 2a of the head 2A.
- three welding protrusions 3A protruding in a substantially hemispherical shape are provided at equal intervals along the circumferential direction of the seating surface 2a.
- the shaft portion 4A has a solid cylindrical shape centered on the central axis X, and a screw groove 4a is formed on the side surface.
- the screw groove 4a is provided on the entire shaft portion 4A (from one end side to the other end side in the central axis direction).
- the guide portion 5A has a non-circular contour shape in front view of at least the head 2A side edge, that is, the edge of the root portion 5d, and a plurality of top portions 5b are formed.
- the contour shape of the guide portion 5A in the front view is a triangular equidiameter distorted circle.
- the radius of curvature at the contact portion 5f of the top portion 5b is made smaller than the radius of curvature at the portion where the contact portion of the insertion hole 11 contacts.
- the top portion 5b is formed on the inner surface 11a of the insertion hole 11 in the direction of the central axis X. Can be in line contact.
- the guide portion 5A is formed with a tapered portion 5g having a diameter reduced from the root portion 5d side toward the tip portion 5e side in the central axis X direction.
- the diameter of the guide portion 5A is reduced from the root portion 5d side to the tip portion 5e side in the central axis X direction not only at the top portion 5b but also at the side portion 5c of the guide portion 5A.
- a tapered portion 5g is formed.
- the top portion 5b is lined in the circumferential direction with the inner surface 11a of the insertion hole 11. Can be contacted.
- the radius of curvature at the top portion 5b is made smaller than the radius of curvature at the portion where the abutting portion of the insertion hole 11 abuts, and at least the apex portion 5b of the guide portion 5A is extended from the root portion 5d side to the tip portion 5e in the central axis X direction.
- the contact between the top portion 5b and the inner surface 11a of the insertion hole 11 can be a point contact.
- the top portion 5b and the inner surface 11a of the insertion hole 11 are in point contact at three points of the contact portion 5f of each top portion 5b, and the welding bolt 1A is inserted into the insertion hole 11 by this contact portion 5f. Positioning when inserted through the is performed.
- the three contact portions 5f are provided so as to be positioned at the intermediate portion in the circumferential direction of the two welding projections 3 in order to reduce a current value of a shunt current described later.
- the welding bolt 1A has a groove 6A formed on the boundary surface 7 between the side surface 5a of the guide portion 5A and the seating surface 2a of the head portion 2A on the top surface 2b side in the central axis X direction. is doing.
- the groove 6A is formed in only the position corresponding to the three top portions 5b of the guide portion 5A in the boundary portion 7. That is, in the boundary portion 7, the groove portion 6A is provided only in the vicinity of the top portion 5b that may ride on the surface of the plate member 10.
- the shaft portion 4A and the guide portion 5A of the welding bolt 1A are inserted into the insertion hole 11 of the plate member 10.
- the welding protrusion 3 ⁇ / b> A is brought into contact with the surface 10 a of the plate member 10.
- the top portion 5b of the guide portion 5A comes into contact with the inner surface 11a of the insertion hole 11 at the contact portion 5f, thereby positioning the welding bolt 1A.
- the upper electrode 20 is brought into contact with the top surface 2b of the head 2A, and the lower electrode 21 is brought into contact with the back surface side of the plate member 10.
- the lower electrode 21 is formed with a through hole 21a having a diameter larger than that of the insertion hole 11, and as shown in FIG. 10, the lower electrode 21 has a through hole 21a and a shaft portion 4A of the welding bolt 1A. It abuts on the back side of the plate 10 so as to penetrate the guide portion 5A.
- the welding bolt 1A and the plate member 10 inserted into the insertion hole 11 are sandwiched and pressed by the upper electrode 20 and the lower electrode 21.
- the contact portion 30A between the welding projection 3A and the plate member 10 is crushed to form a contact surface 31A.
- the electrical resistance in 30 A of contact parts falls because the contact area of 3 A of welding protrusions and the board
- the contact portion 5f of the top portion 5b is substantially point-contacted regardless of the formation of the contact surface 31A of the welding projection, the resistance value at the contact portion 5f hardly changes, and the contact portion 5A does not change. Continue to maintain a value higher than the resistance value.
- a welding bolt 1B according to the present embodiment is basically the same as that of the second embodiment, and includes a head portion 2A, a shaft portion 4A in which screw grooves 4a are formed, and between the head portion 2A and the shaft portion 4A. And a guide portion 5A that performs positioning when the welding bolt 1B is inserted into the insertion hole 11 of the plate member 10.
- the contour shape of the guide portion 5A is a triangular equidiametrically distorted circle, and the curvature radius at the top portion 5b is made smaller than the curvature radius at the portion where the contact portion 5f of the insertion hole 11 contacts, and the guide portion 5A.
- the inner surface 11a and the top portion 5b are brought into point contact with each other by forming a tapered portion 5g having a diameter reduced from the base portion 5d side toward the tip portion 5e side in the central axis X direction.
- the groove 6B is entirely along the boundary portion 7 between the side surface 5a of the guide portion 5A and the seat surface 2a of the head portion 2A. It is in the point provided over the circumference.
- the groove 6B is drilled so as to include the virtual circle C1 shown in FIG. That is, the groove portion 6B is formed so that the peripheral edge of the insertion hole 11 is included in the groove portion 6B in a front view in a state where the plate member 10 is inserted.
- the groove 6B is provided over the entire circumference along the boundary portion 7 between the side surface 5a of the guide portion 5A and the seating surface 2a of the head portion 2A, whereby the insertion hole 11 is formed in the plate material 10. Even when a burr has occurred around the insertion hole 11 during the formation, the burr can be accommodated in the groove 6B provided on the entire circumference during the welding operation. It can suppress that the made burr
- the welding bolt 1C according to the present embodiment is provided on the head 2 provided on one end side (lower side in FIG. 13) in the central axis X direction and on the other end side (upper side in FIG. 13), and a screw groove 4a is formed.
- the head portion 2 is formed in a substantially disc shape, and the seating surface 2a of the head portion 2 is provided with a welding projection 3 that melts and welds to the plate member 10 when a welding current is applied.
- a welding projection 3 that melts and welds to the plate member 10 when a welding current is applied.
- three triangular columnar welding projections 3 extending in the circumferential direction are provided at equal intervals along the circumferential direction of the seating surface 2a.
- the shaft portion 4 has a solid cylindrical shape centered on the central axis X, and a screw groove 4a is formed on the side surface.
- the screw groove 4 a is provided only at the root portion of the shaft portion 4.
- the contour shape of at least the root portion 5d edge of the guide portion 5 is a triangular equidiametrically distorted circle, and the curvature radius at the top portion 5b is larger than the curvature radius at the portion where the contact portion 5f of the insertion hole 11 contacts.
- the inner surface 11a and the top portion 5b are spotted by forming a tapered portion 5g having a reduced diameter from the root portion 5d side toward the tip end portion 5e side in the central axis X direction at least at the top portion 5b of the guide portion 5. It is in contact.
- the shape of the guide portion 5 is such that the contour shape at the root portion 5d becomes an isosceles circular shape, and the contour shape gradually approaches a perfect circle toward the tip portion 5e. It has a shape.
- the guide portion 5 is formed such that the contour shape of the tip portion 5e is a perfect circle inscribed in the isosceles circle at the root portion 5d. That is, the guide portion 5 has the largest taper angle at the contact portion 5f, and the taper angle gradually decreases as the guide portion 5 moves toward the side portion 5c.
- the taper angle is formed to be zero at a portion in contact with the circle.
- the groove 6C is formed only at a position corresponding to the top 5b of the boundary portion 7 between the side surface 5a of the guide 5 and the seating surface 2a of the head 2.
- the shape of the side surface of the mold is further increased by changing the shape of the guide portion 5 from a circular shape to a perfect circle gradually from the root portion 5d toward the tip portion 5e.
- a smooth shape can be obtained, wear of the mold used for manufacturing the weld bolt can be further suppressed, and the life of the mold can be further extended.
- a welding bolt 1D according to the present embodiment is basically the same as that of the fourth embodiment, and includes a head portion 2, a shaft portion 4 in which a screw groove 4a is formed, and between the head portion 2 and the shaft portion 4. And a guide portion 5 that performs positioning when the welding bolt 1D is inserted into an insertion hole of the plate member 10 to be described later.
- tip part from the root part 5d side in the center axis X direction at least to the top part 5b of the guide part 5 The inner surface 11a and the top portion 5b are brought into point contact with each other by forming the tapered portion 5g having a diameter reduced toward the 5e side.
- the guide portion 5 is formed so that the contour shape at the edge of the root portion 5d is an isosceles circular shape and the contour shape of the tip portion 5e is a perfect circle.
- this embodiment is mainly different from the welding bolt 1C according to the fourth embodiment described above in that the groove 6D is entirely along the boundary portion 7 between the side surface 5a of the guide portion 5 and the seating surface 2a of the head portion 2. It is in the point provided over the circumference. Also in the present embodiment, as in the third embodiment, the groove 6D is drilled so as to include the virtual circle C1 shown in FIG. That is, the groove 6D is drilled so that the peripheral edge of the insertion hole 11 is included in the groove 6D when viewed from the front in the state of being inserted into the plate member 10.
- the groove 6 ⁇ / b> D is provided over the entire circumference along the boundary portion 7 between the side surface 5 a of the guide portion 5 and the seating surface 2 a of the head portion 2, whereby the insertion hole 11 is formed in the plate material 10.
- the burr can be accommodated in the groove 6D provided on the entire circumference during the welding operation. It can suppress that the made burr
- the welding bolt 1E according to the present embodiment is provided on the head 2A provided on one end side (lower side in FIG. 9) in the central axis X direction and on the other end side (upper side in FIG. 9), and has a screw groove 4a. Guide that is formed between the shaft portion 4A, the head portion 2A, and the shaft portion 4A and that contacts the insertion hole 11 formed in the plate material (member to be welded) 10 and performs positioning when the welding bolt 1E is inserted. Part 5E.
- the head portion 2A is formed in a substantially disc shape, and a welding projection 3A that melts and welds to the plate member 10 when a welding current is applied is provided on the seating surface 2a of the head portion 2A.
- a welding projection 3A that melts and welds to the plate member 10 when a welding current is applied is provided on the seating surface 2a of the head portion 2A.
- three welding protrusions 3A protruding in a substantially hemispherical shape are provided at equal intervals along the circumferential direction of the seating surface 2a.
- the shaft portion 4A has a solid cylindrical shape centered on the central axis X, and a screw groove 4a is formed on the side surface.
- the screw groove 4a is provided on the entire shaft portion 4A (from one end side to the other end side in the central axis direction).
- the shape of the guide portion 5E has a triangular shape in which a side surface 5a is formed by a top portion 5b formed at each vertex portion of a triangle and a planar side portion 5c formed at each side portion. Also in this embodiment, the radius of curvature at the top 5b is made smaller than the radius of curvature at the portion where the contact portion 5f of the insertion hole 11 contacts.
- a tapered portion 5g having a diameter reduced from the base portion 5d side toward the tip end portion 5e side in the central axis X direction is formed on the side surface 5a of the guide portion 5E. That is, also in this embodiment, the inner surface 11a of the insertion hole 11 and the top portion 5b are in point contact.
- the groove 6E is formed only at a position corresponding to the top 5b of the boundary portion 7 between the side surface 5a of the guide portion 5E and the seating surface 2a of the head 2A.
- the shape of the guide portion 5E can be made simpler, the mold can be easily manufactured.
- a welding bolt 1F according to the present embodiment is basically the same as that of the sixth embodiment, and includes a head portion 2A, a shaft portion 4A in which a screw groove 4a is formed, and between the head portion 2A and the shaft portion 4A. And a guide portion 5E for positioning when the welding bolt 1F is inserted into the insertion hole 11 of the plate member 10.
- the contour shape of the guide portion 5E is triangular, and the radius of curvature at the top portion 5b is made smaller than the radius of curvature at the portion where the contact portion 5f of the insertion hole 11 contacts, and at the side surface 5a of the guide portion 5E,
- the inner surface 11a and the top portion 5b are brought into point contact with each other by forming a tapered portion 5g having a diameter reduced from the root portion 5d side toward the tip portion 5e side in the axis X direction.
- this embodiment is mainly different from the welding bolt 1E according to the sixth embodiment in that the groove 6F is entirely along the boundary portion 7 between the side surface 5a of the guide portion 5E and the seat surface 2a of the head portion 2A. It is in the point provided over the circumference.
- the groove 6F is drilled so as to include the virtual circle C1 shown in FIG. That is, the groove portion 6F is formed so that the peripheral edge of the insertion hole 11 is included in the groove portion 6F when viewed from the front in a state where the plate member 10 is inserted.
- the groove 6F is provided over the entire circumference along the boundary portion 7 between the side surface 5a of the guide portion 5E and the seating surface 2a of the head portion 2A, whereby the insertion hole 11 is formed in the plate material 10. Even when burrs are generated around the insertion hole 11 during the formation, the burrs can be accommodated in the groove 6F provided in the entire circumference during the welding operation. It can suppress that the made burr
- a welding bolt 1G according to the present embodiment is provided on a head 2A provided on one end side (lower side in FIG. 9) in the central axis X direction and on the other end side (upper side in FIG. 9), and a screw groove 4a is formed.
- the guide is formed between the shaft portion 4A, the head portion 2A and the shaft portion 4A, and is positioned when the welding bolt 1G is inserted into contact with the insertion hole 11 formed in the plate material (member to be welded) 10. Part 5G.
- the head portion 2A is formed in a substantially disc shape, and a welding projection 3A that melts and welds to the plate member 10 when a welding current is applied is provided on the seating surface 2a of the head portion 2A.
- a welding projection 3A that melts and welds to the plate member 10 when a welding current is applied is provided on the seating surface 2a of the head portion 2A.
- four welding protrusions 3A protruding in a substantially hemispherical shape are provided at equal intervals along the circumferential direction of the seating surface 2a.
- the shape of the guide portion 5G has a quadrangular shape in which a side surface 5a is formed by a top portion 5b formed at each vertex portion of a square and a planar side portion 5c formed at each side portion. Also in this embodiment, the radius of curvature at the top 5b is made smaller than the radius of curvature at the portion where the contact portion 5f of the insertion hole 11 contacts.
- a taper portion 5g having a diameter reduced from the root portion 5d side toward the tip end portion 5e side in the central axis X direction is formed on the side surface 5a of the guide portion 5G. That is, also in this embodiment, the inner surface 11a of the insertion hole 11 and the top portion 5b are in point contact.
- the groove 6G is formed only at a position corresponding to the top 5b of the boundary portion 7 between the side surface 5a of the guide portion 5G and the seating surface 2a of the head 2A.
- a welding bolt 1H according to the present embodiment is basically the same as that of the eighth embodiment, and includes a head portion 2A, a shaft portion 4A in which a screw groove 4a is formed, and between the head portion 2A and the shaft portion 4A. And a guide portion 5G that performs positioning when the welding bolt 1H is inserted into the insertion hole 11 of the plate member 10.
- the outline shape of the guide part 5G is made into square shape, and while making the curvature radius in the top part 5b smaller than the curvature radius in the site
- the inner surface 11a and the top portion 5b are brought into point contact with each other by forming a tapered portion 5g having a diameter reduced from the root portion 5d side toward the tip portion 5e side in the axis X direction.
- this embodiment is mainly different from the welding bolt 1G according to the eighth embodiment in that the groove 6H is entirely along the boundary portion 7 between the side surface 5a of the guide portion 5G and the seating surface 2a of the head portion 2A. It is in the point provided over the circumference.
- the groove 6H is drilled so as to include the virtual circle C1 shown in FIG. That is, the groove 6H is formed so that the peripheral edge of the insertion hole 11 is included in the groove 6H when viewed from the front in the state of being inserted into the plate member 10.
- the groove 6H is provided over the entire circumference along the boundary portion 7 between the side surface 5a of the guide portion 5G and the seating surface 2a of the head portion 2A, whereby the insertion hole 11 is formed in the plate material 10. Even when a burr has occurred around the insertion hole 11 during the formation, the burr can be accommodated in the groove 6H provided on the entire circumference during the welding operation. It can suppress that the made burr
- a triangular equidiameter distorted circle, a triangle, and a quadrangle are illustrated as the contour shape of the guide portion.
- a pentagonal or more equidiameter distorted circle may be used, or a pentagon or more polygonal shape may be used.
- an opening is the outline shape of a boundary part (In the said 1st Embodiment, A concave portion may be formed so as to have a shape substantially similar to a triangular equidiameter strain circle).
- the example in which the concave portion is not formed on the top surface side of the head is exemplified, but the top surface side of the head of the welding bolt according to the second to ninth embodiments. You may form a recessed part in this. At this time, the size of the recess and the opening shape can be appropriately set.
- head, shaft, insertion hole, and other detailed specifications can be changed as appropriate.
- the taper portion is provided over the entire circumference of the side surface of the guide portion.
- the taper portion is in the vicinity of the abutment portion at the top portion of the guide portion. You may make it provide only.
- a welding bolt capable of improving the welding accuracy can be obtained.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
- Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
Abstract
Description
本実施形態にかかる溶接ボルト1は、中心軸X方向一端側(図2中下側)に設けられる頭部2と、他端側(図2中上側)に設けられ、螺子溝4aが形成された軸部4と、頭部2と軸部4との間に形成され、後述する板材(被溶接部材)10に形成された挿通孔11に当接して溶接ボルト1を挿通した際の位置決めを行う案内部5と、を備えている。この溶接ボルト1は、上型40および下型41を用い、冷間圧造用炭素鋼等の材料を冷間鍛造することで形成される(図4参照)。
本実施形態にかかる溶接ボルト1Aは、中心軸X方向一端側(図9中下側)に設けられる頭部2Aと、他端側(図9中上側)に設けられ、螺子溝4aが形成された軸部4Aと、頭部2Aと軸部4Aとの間に形成され、後述する板材(被溶接部材)10に形成された挿通孔11に当接して溶接ボルト1Aを挿通した際の位置決めを行う案内部5Aと、を備えている。この溶接ボルト1Aは、図示せぬ金型を用い、冷間圧造用炭素鋼等の材料を冷間鍛造することで形成される。
本実施形態にかかる溶接ボルト1Bは、基本的に上記第2実施形態と同様であり、頭部2Aと、螺子溝4aが形成された軸部4Aと、頭部2Aと軸部4Aとの間に形成され、板材10の挿通孔11に溶接ボルト1Bを挿通した際の位置決めを行う案内部5Aと、を備えている。
本実施形態にかかる溶接ボルト1Cは、中心軸X方向一端側(図13中下側)に設けられる頭部2と、他端側(図13中上側)に設けられ、螺子溝4aが形成された軸部4と、頭部2と軸部4との間に形成され、板材(被溶接部材)10に形成された挿通孔11に当接して溶接ボルト1Cを挿通した際の位置決めを行う案内部5と、を備えている。
本実施形態にかかる溶接ボルト1Dは、基本的に上記第4実施形態と同様であり、頭部2と、螺子溝4aが形成された軸部4と、頭部2と軸部4との間に形成され、後述する板材10の挿通孔に溶接ボルト1Dを挿通した際の位置決めを行う案内部5と、を備えている。そして、頂部5bにおける曲率半径を挿通孔11の当接部5fが当接する部位における曲率半径よりも小さくするとともに、案内部5の少なくとも頂部5bに、中心軸X方向で根元部5d側から先端部5e側に向けて縮径するテーパ部5gを形成することで、内面11aと頂部5bとを点接触させている。
本実施形態にかかる溶接ボルト1Eは、中心軸X方向一端側(図9中下側)に設けられる頭部2Aと、他端側(図9中上側)に設けられ、螺子溝4aが形成された軸部4Aと、頭部2Aと軸部4Aとの間に形成され、板材(被溶接部材)10に形成された挿通孔11に当接して溶接ボルト1Eを挿通した際の位置決めを行う案内部5Eと、を備えている。
本実施形態にかかる溶接ボルト1Fは、基本的に上記第6実施形態と同様であり、頭部2Aと、螺子溝4aが形成された軸部4Aと、頭部2Aと軸部4Aとの間に形成され、板材10の挿通孔11に溶接ボルト1Fを挿通した際の位置決めを行う案内部5Eと、を備えている。
本実施形態にかかる溶接ボルト1Gは、中心軸X方向一端側(図9中下側)に設けられる頭部2Aと、他端側(図9中上側)に設けられ、螺子溝4aが形成された軸部4Aと、頭部2Aと軸部4Aとの間に形成され、板材(被溶接部材)10に形成された挿通孔11に当接して溶接ボルト1Gを挿通した際の位置決めを行う案内部5Gと、を備えている。
本実施形態にかかる溶接ボルト1Hは、基本的に上記第8実施形態と同様であり、頭部2Aと、螺子溝4aが形成された軸部4Aと、頭部2Aと軸部4Aとの間に形成され、板材10の挿通孔11に溶接ボルト1Hを挿通した際の位置決めを行う案内部5Gと、を備えている。
Claims (7)
- 一端側に設けられ、座面に溶接突起が設けられた頭部と、他端側に設けられた軸部と、前記頭部と軸部との間に設けられ、被溶接部材に形成された挿通孔に挿入される案内部と、を備え、
前記頭部の座面と前記案内部の側面との境界部分に溝部を穿設したことを特徴とする溶接ボルト。 - 前記頭部の天面側中央部に凹部が形成されていることを特徴とする請求項1に記載の溶接ボルト。
- 前記溝部が前記境界部分に沿って全周に亘って穿設されていることを特徴とする請求項1または請求項2に記載の溶接ボルト。
- 前記案内部は、複数の頂部を備えるとともに、当該複数の頂部には前記被溶接部材の挿通孔内面に当接する当接部を有しており、
前記頂部の当接部における曲率半径が、前記挿通孔の当接部が当接する部位における曲率半径よりも小さいことを特徴とする請求項1~3のうちいずれか1項に記載の溶接ボルト。 - 前記案内部の少なくとも根元部端縁の輪郭形状が等径歪円であることを特徴とする請求項4に記載の溶接ボルト。
- 前記案内部の少なくとも根元部端縁の輪郭形状が多角形状であることを特徴とする請求項4に記載の溶接ボルト。
- 前記案内部は、複数の頂部を備えるとともに、当該複数の頂部には前記被溶接部材の挿通孔内面に当接する当接部を有しており、少なくとも当該複数の頂部には、根元部側から先端部側に向けて縮径するテーパ部が形成されていることを特徴とする請求項1~6のうちいずれか1項に記載の溶接ボルト。
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JP2009070174A JP5357589B2 (ja) | 2009-03-23 | 2009-03-23 | 溶接ボルト |
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ES2732725A1 (es) * | 2018-12-26 | 2019-11-25 | Grana Jose Luis Miranda | Pieza de union mecanica mediante roscado aplicable para soldadura por resistencia |
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JP5613521B2 (ja) * | 2010-10-08 | 2014-10-22 | 新日鐵住金株式会社 | 溶接ナット部を有する自動車用構造部材及びその製造方法 |
EP3013512B1 (en) * | 2013-06-26 | 2020-07-29 | Howmet Aerospace Inc. | Resistance welding fastener, apparatus and methods |
JP6545536B2 (ja) * | 2015-06-10 | 2019-07-17 | 日本炭酸瓦斯株式会社 | ボンベ封止プラグ及び該封止プラグを用いたボンベ封止方法 |
CN105508385A (zh) * | 2016-01-21 | 2016-04-20 | 上海炫骁电子科技有限公司 | 一种特制螺栓 |
KR102004733B1 (ko) * | 2017-03-15 | 2019-07-29 | 주식회사 성우하이텍 | 웰드볼트 |
JP2019138368A (ja) * | 2018-02-09 | 2019-08-22 | 株式会社青山製作所 | かしめボルト |
US11735837B2 (en) * | 2019-10-17 | 2023-08-22 | Production Spring, LLC | Electrical ground strap assemblies providing increased point of contact between a terminal and a bolt |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4912370U (ja) * | 1972-05-12 | 1974-02-01 | ||
JPS60122016U (ja) * | 1984-01-26 | 1985-08-17 | 三菱自動車工業株式会社 | ウエルドボルト |
JPH0221016A (ja) * | 1988-04-15 | 1990-01-24 | Trw Inc | 摩擦溶接可能なスタッド |
JPH04262880A (ja) * | 1991-02-15 | 1992-09-18 | Toupure Kk | 溶接ボルト |
JPH08303438A (ja) * | 1995-04-28 | 1996-11-19 | Mitsubishi Motors Corp | 段付ウエルドボルトの取付構造 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01249274A (ja) * | 1988-03-31 | 1989-10-04 | Yamakawa Ind Co Ltd | 溶接ボルト取付方法 |
-
2009
- 2009-03-23 JP JP2009070174A patent/JP5357589B2/ja not_active Expired - Fee Related
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2010
- 2010-03-17 CN CN201080013729.2A patent/CN102362082B/zh not_active Expired - Fee Related
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4912370U (ja) * | 1972-05-12 | 1974-02-01 | ||
JPS60122016U (ja) * | 1984-01-26 | 1985-08-17 | 三菱自動車工業株式会社 | ウエルドボルト |
JPH0221016A (ja) * | 1988-04-15 | 1990-01-24 | Trw Inc | 摩擦溶接可能なスタッド |
JPH04262880A (ja) * | 1991-02-15 | 1992-09-18 | Toupure Kk | 溶接ボルト |
JPH08303438A (ja) * | 1995-04-28 | 1996-11-19 | Mitsubishi Motors Corp | 段付ウエルドボルトの取付構造 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2732725A1 (es) * | 2018-12-26 | 2019-11-25 | Grana Jose Luis Miranda | Pieza de union mecanica mediante roscado aplicable para soldadura por resistencia |
WO2020136295A1 (es) * | 2018-12-26 | 2020-07-02 | Miranda Grana Jose Luis | Pieza de unión mecánica mediante roscado aplicable para soldadura por resistencia |
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CN102362082A (zh) | 2012-02-22 |
CN102362082B (zh) | 2014-05-28 |
JP5357589B2 (ja) | 2013-12-04 |
JP2010223304A (ja) | 2010-10-07 |
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