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WO2015037264A1 - Vis d'ancrage et son procédé de production - Google Patents

Vis d'ancrage et son procédé de production Download PDF

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Publication number
WO2015037264A1
WO2015037264A1 PCT/JP2014/058745 JP2014058745W WO2015037264A1 WO 2015037264 A1 WO2015037264 A1 WO 2015037264A1 JP 2014058745 W JP2014058745 W JP 2014058745W WO 2015037264 A1 WO2015037264 A1 WO 2015037264A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
anchor bolt
hole
end side
peripheral surface
Prior art date
Application number
PCT/JP2014/058745
Other languages
English (en)
Japanese (ja)
Inventor
安藤　和明
徹 柳井
Original Assignee
株式会社豊和
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社豊和 filed Critical 株式会社豊和
Publication of WO2015037264A1 publication Critical patent/WO2015037264A1/fr

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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
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
    • F16B13/08—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate or non-separate gripping parts moved into their final position in relation to the body of the device without further manual operation
    • F16B13/0858—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate or non-separate gripping parts moved into their final position in relation to the body of the device without further manual operation with an expansible sleeve or dowel body driven against a tapered or spherical expander plug
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/36—Making other particular articles clips, clamps, or like fastening or attaching devices, e.g. for electric installation

Definitions

  • the present invention relates to an anchor bolt fixed to a hole provided in a rock wall or a concrete wall, and a method for manufacturing the anchor bolt.
  • Patent Document 1 there is known a method in which a hole (hole) is formed in a concrete wall using a drill or the like, and an anchor bolt is inserted into the hole to be fixed.
  • the anchor bolt of Patent Document 1 includes a wedge body that forms a pair of inclined wedge surfaces that are separated from the center axis of the anchor bolt toward the lower end (lower side in FIG. 1 of Patent Document 1), and the wedge. And a pair of retaining members that form reverse wedge surfaces that contact the wedge surface of the body on the inner surface side, and the lower ends of the retaining members are connected by a connecting bottom plate.
  • the nut is tightened by tightening the nut to the bolt fixed to the upper end of the wedge body, and the wedge surface of the wedge body is retained. Press the reverse wedge surface of the member.
  • both the retaining members are expanded, and the outer peripheral surface of the retaining member is pressed against the inner peripheral surface of the hole and is fixed to the hole.
  • the present invention has been provided for the purpose of solving such inconveniences, and it is an object of the present invention to provide an anchor bolt that can be firmly fixed to a hole provided in a concrete wall or the like and a method for manufacturing the anchor bolt.
  • the anchor bolt of the present invention is an anchor bolt that is inserted into and fixed to a hole 2 provided in the wall surface 1, and has a plurality of planar inclined surfaces 11 formed on the outer peripheral surface.
  • the member 7 and the expanding member 8 that is externally fitted to the taper member 7 are formed.
  • the expanding member 8 forms an inclined surface-like inner surface 14 that faces the inclined surface 11 of the taper member 7.
  • a plurality of abutting portions 12 and a bridging portion 13 connected to each abutting portion 12, and the taper member 7 is connected to the rod portion 3 having a male thread 9 formed on the outer peripheral surface.
  • Each inclined surface 11 of the taper member 7 is inclined so as to approach the central axis of the taper member 7 toward the proximal end side of the anchor bolt, and the inner surface 14 of the contact portion 12 contacts the inclined surface 11 of the taper member 7.
  • the peripheral surface 15 can come into surface contact with the inner peripheral surface 4 of the hole 2, and the bridging portion 13 is formed of an elastically deformable material and is located on the tip side of the anchor bolt.
  • Main body portion 13a and a plurality of plate-like connection portions 13b that are connected to the main body portion 13a and fix the tips of the contact portions 12, respectively.
  • each contact portion 12 In the free state before inserting the contact portion 12 into the hole 2, each contact portion 12 is inclined with respect to the main body portion 13 a so as to move away from the taper member 7 toward the free end side of the contact portion 12.
  • the bridging portion 13 is elastically deformed when the anchor bolt is inserted into the hole 2, and the anchor bolt is inserted into the hole 2 in a state where the free end side of each contact portion 12 approaches the taper member 7 side.
  • the free end of each abutting portion 12 by the elastic restoring force at that time There wherein the press against the inner circumferential surface 4 of the hole 2.
  • the wall surface 1 includes civil structures such as tunnels, wall surfaces such as ceilings and side walls of buildings, and rock walls.
  • the entire outer peripheral surface 15 of the contact portion 12 is preferably in surface contact with the inner peripheral surface 4 of the hole 2, but a part of the outer peripheral surface 15 may not be in surface contact.
  • the bridging portion 13 has elasticity capable of pressing the free end side of the abutting portion 12 against the inner peripheral surface 4 of the hole 2 by the elastic restoring force of the bridging portion 13, and the tip end side of the anchor bolt is turned up.
  • the connecting portion 13b only needs to have a strength against bending so that the weight of the contact portion 12 hardly approaches the tapered member 7 side.
  • the taper member 7 may be one in which the rod portion 3 is connected by the male screw 9 of the rod portion 3 being screwed into the female screw 6 provided on the taper member 7.
  • the taper member 7 and the rod portion 3 are connected to each other. It may be formed integrally and connected to the rod portion 3.
  • the inclined surface 11 of the taper member 7 and the inner surface 14 of the contact portion 12 may each be slightly curved.
  • the recessed part 16 is each formed in the front end side of each contact part 12, The free end side of each connection part 13b of the bridge
  • bridging part 13 is each fitted in these recessed parts 16, and each connection part 13b is each fitted to each connection part 13b.
  • the front ends of the contact portions 12 are fixed, and the free end side of the connection portion 13b of the bridging portion 13 can be accommodated in the recess 16 in the fitted state.
  • the case where the concave portion 16 is formed on the outer peripheral surface 15 side of the contact portion 12 and the case where the concave portion 16 is formed on the inner surface 14 side of the contact portion 12 are included.
  • the main body part 19a to be processed into the main body part 13a of the bridging part 13 and the main body part 19a are connected so as to extend outward from the edge of the main body part 19a and processed into the connection part 13b.
  • a blank material 19 composed of a plurality of connection parts 19b is punched from a flat base material, and the free end side of each connection part 19b of the blank material 19 is formed on the tip side of the contact part 12.
  • the anchoring step is performed by a fixing step of fitting and fixing each of the recessed portions 16 and a bending step of bending the proximal end side of each connection portion 19b of the blank 19 and processing each connection portion 19b into an inclined upright posture.
  • a bolt expanding member 8 is produced.
  • the case where the fixing step is performed before the bending step and the case where the bending step is performed before the fixing step are included.
  • a fixing member such as a rivet, a screw, or a caulking pin provided in the concave portion 16 of the contact portion 12 is used.
  • the case where it fixes and the case where it fixes by spot welding etc. without using the member for fixation is included.
  • the free end side of the abutting part 12 presses against the inner peripheral surface 4 of the hole 2 by the elastic restoring force of the bridging part 13.
  • the opening side the base end side of the anchor bolt
  • the free end side of the contact portion 12 is hooked on the inner peripheral surface 4 of the hole 2, and the expanding member 8 (contact portion) to the opening side of the hole 2. The movement of 12) is suppressed.
  • the expanding member 8 contact portion 12
  • the inclined surface 11 is reliably brought into surface-contact with the inner surface 14 of the contact portion 12 (that is, pressed in a state of surface contact), and the contact portion 12 is reliably moved toward the inner peripheral surface 4 side of the hole 2 by the inclined surface 11. Can be pressed.
  • the outer peripheral surface 15 of the abutting portion 12 presses against the inner peripheral surface 4 of the hole 2 in a surface contact state, and the anchor is caused by friction between the outer peripheral surface 15 of the abutting portion 12 and the inner peripheral surface 4 of the hole 2.
  • the bolt is firmly fixed in the hole 2.
  • the contact portion 12 In maintaining the state where the free end side of the contact portion 12 is pressed against the inner peripheral surface 4 of the hole 2, it is desirable that the contact portion 12 itself hardly deforms.
  • the bridging portion 13 and the abutting portion 12 are formed of separate members, the bridging portion 13 is formed of an elastic member, and the abutting portion 12 is difficult to deform. Can be made of material. Thereby, the state where the free end side of the contact portion 12 is pressed against the inner peripheral surface 4 of the hole 2 can be reliably maintained.
  • each connecting portion 13b of the bridging portion 13 With the free end side of each connecting portion 13b of the bridging portion 13 fitted in the concave portion 16 on the tip side of each abutting portion 12, the free end side of each connecting portion 13b of the bridging portion 13 is in the concave portion 16 respectively. If it fits in, it will be suppressed that the connection part 13b protrudes to the outward of the contact part 12. FIG. Accordingly, when the concave portion 16 of the contact portion 12 is formed on the outer peripheral surface 15 side of the contact portion 12, the free end side of the connection portion 13 b comes into contact with the inner peripheral surface 4 of the hole 2.
  • the anchor bolt of the present invention is fixed (held) by being inserted into a hole 2 (provided) formed in a wall surface 1 (FIG. 6) of a concrete ceiling, for example (state of FIG. 7).
  • the anchor bolt is attached to the tip of the cylindrical rod portion 3 (the left end in FIG. 1) and the anchor bolt is attached to the cylindrical inner peripheral surface 4 of the hole 2 (FIG. 6).
  • the expansion mechanism 5 is fixed for fixing.
  • the expansion mechanism 5 includes a taper member 7 that has a female screw 6 formed in a penetrating manner along a central axis, and an expansion member 8 that is externally fitted to the taper member 7.
  • a male screw 9 formed on the outer peripheral surface of the rod portion 3 is screwed onto the female screw 6 of the taper member 7.
  • the outer peripheral surface of the taper member 7 has a cylindrical surface shape, and planar inclined surfaces 11 are formed on four sides of the outer peripheral surface of the taper member 7, respectively.
  • the four inclined surfaces 11 are formed at equal intervals in the circumferential direction of the taper member 7.
  • Each inclined surface 11 of the taper member 7 is inclined so as to approach the central axis of the taper member 7 toward the proximal end side (lower side in FIG. 2) of the anchor bolt.
  • the inclined surface 11 of the taper member 7 may not be formed up to the tip (upper end in FIG. 2) or the base end (lower end in FIG. 2) of the taper member 7.
  • the expanding member 8 includes four contact portions 12 each forming an inclined surface (planar shape) inner surface 14 facing each inclined surface 11 of the taper member 7, and the contact portions 12. It has the bridge
  • the inclination angle of the inner surface 14 of each contact portion 12 of the expanding member 8 is substantially equal to the inclination angle of each inclined surface 11 of the tapered member 7.
  • the outer peripheral surface 15 of each contact portion 12 of the spreading member 8 is formed in a cylindrical surface shape like the inner peripheral surface 4 of the hole 2, and the inner surface 14 of the contact portion 12 is the taper member 7.
  • the outer peripheral surface 15 of the contact portion 12 can be brought into surface contact with the inner peripheral surface 4 of the hole 2 while being in surface contact with the inclined surface 11.
  • the inner surface 14 of the contact portion 12 may not be formed in an inclined shape up to the distal end (upper end in FIG. 2) or the base end (lower end in FIG. 2).
  • the bridging portion 13 includes a flat plate-like main body portion 13a located on the distal end side (upper side in FIG. 2) of the spreading mechanism 5 (anchor bolt), and the abutting portions connected to the main body portion 13a. It is formed by four flat plate-like connecting portions 13b each fixing the tip of 12. As shown in FIG. 2, each connection portion 13 b of the bridging portion 13 extends from the edge of the main body portion 13 a to the proximal end side of the contact portion 12, and is in a free state before the contact portion 12 is inserted into the hole 2. Thus, each contact portion 12 is formed to be inclined with respect to the main body portion 13a so as to move away from the taper member 7 toward the free end side (lower side in FIG. 2) of the contact portion 12.
  • a recess 16 is formed on the outer peripheral surface 15 side of the contact portion 12 to which the free end side of the connection portion 13 b of the bridging portion 13 is fitted.
  • the distal end side of the contact portion 12 is fixed to the free end side of the connection portion 13b.
  • the free end side of the connecting portion 13b hardly protrudes outward from the outer peripheral surface 15 of the contact portion 12 (see FIG. 2). This prevents the free end side of the connecting portion 13b from contacting the inner peripheral surface 4 of the hole 2 and the outer peripheral surface 15 of the contact portion 12 from becoming difficult to contact the inner peripheral surface 4 of the hole 2.
  • the rod part 3 is attached with equipment and piping (not shown).
  • the rod portion 3 is made of stainless steel or the like.
  • the bridging portion 13 is made of an elastically deformable material, and is in an upright posture (the posture of FIG. 2) with the tip end side of the anchor bolt facing up, and almost approaches the taper member 7 side with the weight of the contact portion 12. It has strength against bending.
  • the bridging portion 13 of the expanding member 8 is elastically deformed, and the free end side of each abutting portion 12 approaches the taper member 7 side.
  • the anchor bolt enters the hole 2, and the free end side of each contact portion 12 presses against the inner peripheral surface 4 of the hole 2 by the elastic restoring force at that time (state of FIG. 6).
  • the bridging portion 13 is made of stainless steel or the like.
  • the contact portion 12 is made of an aluminum alloy or the like.
  • a plurality of (three in this embodiment) grooves 17 are formed in the length direction of the abutting portion 12 (see FIG. 5) in the lower part (base end side) of the outer peripheral surface 15 of each abutting portion 12 of the expanding member 8.
  • the grooves 17 are arranged at equal intervals in the vertical direction, and the grooves 17 extend in the circumferential direction of the outer peripheral surface 15 of each contact portion 12 (see FIG. 1).
  • the groove 17 may be inclined obliquely in the vertical direction with respect to the outer peripheral surface 15 of the contact portion 12. Instead of the groove 17 or together with the groove 17, the groove 17 is formed on the outer peripheral surface 15 of the contact portion 12. A convex portion (not shown) may be provided.
  • a blank material (flat plate member) 19 shown in FIG. 3 is punched from a flat base material (not shown) (punching step).
  • the blank material 19 is continuously provided so as to extend outward from the four edges of the main body part 19a and the main body part 19a to be processed into the main body part 13a of the bridging part 13, and is processed into the connection part 13b. It consists of four connection parts 19b.
  • a hole 21 (FIG. 3) is punched at the tip side of each connection site 19b.
  • the contact portion 12 is fabricated in advance into the shape shown in FIGS. 1 and 2 by a die casting method (die casting method) or the like.
  • each connection site 19b of the blank 19 is fitted into the recess 16 on the tip side of each contact portion 12 (see FIG. 4A), and the recess 16 of the contact portion 12 is engaged.
  • the caulking pin 22 standing upright is passed through a hole 21 formed on the free end side of each connection portion 19b of the blank 19 and caulked.
  • part 19b of the blank material 19 is fixed in the state accommodated in the recessed part 16 of each contact part 12, respectively (fixing process: the state of (b) of FIG. 4).
  • each connection part 19b of the blank 19 is bent, and each connection part 19b is inclined upright (in FIG. 4).
  • the body portion 19a is in a downward standing posture) (bending step: see FIG. 4C).
  • connection part 19b of the blank 19 after bending the base end side (main body part 13a side) of each connection part 19b of the blank 19 and processing each connection part 19b into an inclined upright posture (bending step),
  • the free end side of the connecting portion 13b of the bridging portion 13 after the processing may be fitted into the concave portion 16 of each contact portion 12 and fixed (fixing step).
  • FIG. 4 and FIG. 5 only two contact portions 12 and connection portions 13b are shown for easy understanding of the drawings.
  • connection portion 13b of the bridging portion 13 and the contact portion 12 when connecting the connection portion 13b of the bridging portion 13 and the contact portion 12 by spot welding, the holes 21 of the connection portions 19b of the blank material 19 and the caulking pins 22 of the contact portion 12 are omitted. be able to.
  • the metal constituting the contact portion 12 is melted and injected into the mold casting mold, whereby the blank material 19 and The contact portion 12 may be integrated. According to this, since the manufacturing (casting) of the contact part 12 and the operation of fixing the contact part 12 to the bridging part 13 can be performed simultaneously, the manufacturing efficiency can be improved accordingly.
  • the operator holds the rod portion 3 with the tip side up and inserts an anchor bolt into the hole 2 (see FIG. 6), and the main body portion 13a of the bridging portion 13 of the expansion mechanism 5 is formed in the hole 2.
  • the anchor bolt is inserted until it comes into contact with the upper surface 24 (see FIG. 7).
  • the rod portion 3 is pulled toward the proximal end side (opening side: the lower side in FIG. 6) of the hole 2 (anchor bolt), so that the taper member 7 of the rod portion 3 and the expansion mechanism 5 becomes the proximal end of the hole 2.
  • the bridging portion 13 of the spreading mechanism 5 enters the hole 2 in the elastically deformed state, and the elastic restoring force causes the free end side of each contact portion 12 (the free end or groove of the contact portion 12). 17) presses against (hangs on) the inner peripheral surface 4 of the hole 2, thereby restricting the downward movement of each contact portion 12 (expansion member 8).
  • each inclined surface 11 of the taper member 7 is accurately positioned on the inner surface 14 of each contact portion 12. It is possible to press the respective contact portions 12 toward the inner peripheral surface 4 side of the hole 2 by the respective inclined surfaces 11 by surface pressure contact (that is, pressed in a surface contact state).
  • each contact portion 12 is pressed against the inner peripheral surface 4 of the hole 2 in a surface contact state, and the surfaces of the outer peripheral surface 15 of each contact portion 12 and the inner peripheral surface 4 of the hole 2 are in contact.
  • the anchor bolt is fixed (temporarily fixed) to the hole 2 by this friction.
  • the inner surface 14 of each contact portion 12 is formed in the hole 2 by each inclined surface 11 of the taper member 7. Further pressing in the state of surface pressure contact toward the inner peripheral surface 4 side, the outer peripheral surface 15 of each contact portion 12 is strongly pressed against the inner peripheral surface 4 of the hole 2, and the anchor bolt is firmly fixed by the hole 2.
  • a bracket 25 (FIG. 7) for fixing unillustrated equipment and piping is attached to the male screw 9 of the rod portion 3 of the anchor bolt, and a nut 26 (FIG. 7) is screwed under the bracket 25. Wear (wear). Then, the nut 26 is tightened with a tool such as a wrench (spanner) to attach the bracket 25 to the anchor bolt.
  • each contact portion 12 is further pressed by the inclined surface 11 of the taper member 7 toward the inner peripheral surface 4 side of the hole 2 in a state of surface pressure contact, and the outer peripheral surface 15 of each contact portion 12 becomes the hole 2.
  • the anchor bolts are firmly fixed to the inner peripheral surface 4 of the steel plate by the holes 2.
  • a washer (not shown) may be mounted on the upper side of the nut 26 instead of the bracket 25.
  • the tapered member 7 is formed with only two inclined surfaces 11. Further, three contact portions 12 may be arranged in the circumferential direction of the taper member 7. In this case, three inclined surfaces 11 are formed on the taper member 7.
  • the bridging portion 13 and the contact portion 12 of the spreading member 8 are formed of separate members, the bridging portion 13 is formed of an elastic body that can be easily elastically deformed, and is difficult to deform.
  • the contact portion 12 can be formed of a simple material. Therefore, when the anchor bolt is inserted into the hole 2, the bridging portion 13 is elastically deformed so that the anchor bolt can be easily inserted into the hole 2 and the contact portion 12 is difficult to deform.
  • the free end side of the portion 12 is pressed against the inner peripheral surface 4 of the hole 2, the contact portion 12 is bent and the contact portion 12 is restrained from being insufficiently caught on the inner peripheral surface 4. .

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dowels (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

L'invention concerne une vis d'ancrage pouvant être fixée solidement dans un trou ménagé dans un mur en béton, etc., et son procédé de production. La vis d'ancrage comprend : quatre parties de contact (12) qui forment des surfaces intérieures (14) pouvant venir en contact de surface avec la surface inclinée (11) d'un élément oblique (7) ; et une partie de coiffe (13) formée d'une partie de corps principal (13a) et de parties de liaison (13b) qui fixent les extrémités des parties de contact (12). Une partie tige (3) comprenant une vis mâle (9) est reliée à l'élément oblique (7). La surface inclinée (11) de l'élément oblique (7) se rapproche de l'axe central de l'élément oblique (7) ainsi que du côté base de vis d'ancrage. Les surfaces périphériques extérieures (15) des parties de contact (12) peuvent être en contact de surface avec la surface périphérique intérieure (4) du trou (2) ménagé dans la surface d'un mur (1), selon un état dans lequel les surfaces intérieures (14) des parties de contact (12) sont en contact de surface avec la surface inclinée (11) de l'élément oblique (7). Les parties de liaison (13b) de la partie de coiffe (13) présentent une forme inclinée de façon à être plus éloignées, à l'état libre, de l'élément oblique (7) ainsi que du côté d'extrémité libre de la partie de contact (12).
PCT/JP2014/058745 2013-09-13 2014-03-27 Vis d'ancrage et son procédé de production WO2015037264A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-191023 2013-09-13
JP2013191023A JP2016223451A (ja) 2013-09-13 2013-09-13 アンカーボルトおよびその製造方法

Publications (1)

Publication Number Publication Date
WO2015037264A1 true WO2015037264A1 (fr) 2015-03-19

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PCT/JP2014/058745 WO2015037264A1 (fr) 2013-09-13 2014-03-27 Vis d'ancrage et son procédé de production

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WO (1) WO2015037264A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11519440B2 (en) 2017-05-11 2022-12-06 Julius Blum Gmbh Dowel for fastening fitting parts

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1039986A (fr) * 1976-06-21 1978-10-10 Donald B. Haslam Boulon d'ancrage dans le roc
US5028188A (en) * 1990-06-18 1991-07-02 The Eastern Company Expansion bolt
US5087160A (en) * 1988-04-12 1992-02-11 American Mining Supply, Inc. Anchor bolt and expansion shell assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1039986A (fr) * 1976-06-21 1978-10-10 Donald B. Haslam Boulon d'ancrage dans le roc
US5087160A (en) * 1988-04-12 1992-02-11 American Mining Supply, Inc. Anchor bolt and expansion shell assembly
US5028188A (en) * 1990-06-18 1991-07-02 The Eastern Company Expansion bolt

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11519440B2 (en) 2017-05-11 2022-12-06 Julius Blum Gmbh Dowel for fastening fitting parts

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