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US-12624510-B2 - Anchor

US12624510B2US 12624510 B2US12624510 B2US 12624510B2US-12624510-B2

Abstract

An anchor is provided whose number of processes of work at the time of performance of installation work can be reduced and which can selectively fix a plurality of types of fixing targets. An anchor 10 includes: a shaft 22 to be buried in a ground; a head 24 into which a propulsive force for propelling the shaft 22 in the ground is inputted, the head 24 being provided on an upper end portion 22 a of the shaft 22 ; and a sleeve 26 having a tubular peripheral wall portion 42 placed around the head 24 . An outer diameter of the head 24 is specified to be greater than an outer diameter of the shaft 22 . Consequently, an undersurface 32 a is secured on an outer peripheral portion 32 of the head 24 . The peripheral wall portion 42 is provided in an upper end portion 42 a with an opening portion 44 in which a first fixing target 12 c, 12 d , or 12 f is fitted as needed. The peripheral wall portion 42 is provided in a lower end portion 42 b with a retainer 46 including an opposing surface 48 facing the outer peripheral portion 32 (the undersurface 32 a ) of the head 24 from below, and a retaining surface 50 to be pressed against a second fixing target 12 a or 12 b from above as needed.

Inventors

  • Hideki Yano

Assignees

  • Creative Systems Co., Ltd.

Dates

Publication Date
20260512
Application Date
20220201
Priority Date
20210414

Claims (13)

  1. 1 . An anchor that fixes a fixing target on a ground surface, comprising: a rod-like shaft to be buried in a ground; a head into which a propulsive force for propelling the shaft in the ground is inputted, the head being provided, coaxially and integrally with the shaft, on an upper end portion of the shaft; and a sleeve including a tubular peripheral wall portion placed around the head, wherein in plan view, a diameter of a first circumcircle circumscribing the head is specified to be greater than a diameter of a second circumcircle circumscribing the shaft, an undersurface facing downward being formed on an outer peripheral portion of the head, the peripheral wall portion is provided in an upper end portion thereof with an opening portion into which a first fixing target is to be fitted above the head, the peripheral wall portion is provided in a lower end portion thereof with a retainer including an opposing surface facing the undersurface formed on the outer peripheral portion of the head from below, and a retaining surface to be pressed against a second fixing target from above, the second fixing target to be fixed on the ground surface, and an inner peripheral surface of the retainer comprises a hole through which the shaft is inserted, and the hole and the opening portion form a through-hole.
  2. 2 . The anchor according to claim 1 , wherein the retaining surface is formed in a tapered shape having an outer diameter that becomes progressively less toward a downward direction.
  3. 3 . The anchor according to claim 1 , wherein the head includes a bottomed hole that is open upward and coaxial with the shaft, and the bottomed hole includes, on an inner peripheral surface thereof, a first female thread to be threadedly engaged with a first male thread for joining a third fixing target to the head.
  4. 4 . The anchor according to claim 1 , wherein the sleeve is configured to be movable in an axial direction relative to the shaft.
  5. 5 . The anchor according to claim 1 , wherein the shaft is provided with a helical digging blade.
  6. 6 . The anchor according to claim 5 , wherein the head is provided with a tool mounting portion on which a rotary tool for rotating the shaft is mounted in the axial direction.
  7. 7 . The anchor according to claim 1 , wherein the peripheral wall portion includes a ring-shaped groove extending in a circumferential direction on an entire circumference of an outer peripheral surface of the peripheral wall portion.
  8. 8 . The anchor according to claim 1 , wherein the peripheral wall portion is provided on the outer peripheral surface thereof with a mating surface to which a fourth fixing target is mated.
  9. 9 . The anchor according to claim 1 , wherein the peripheral wall portion includes, on an inner peripheral surface thereof, a second female thread to be threadedly engaged with a second male thread for joining a fifth fixing target to the sleeve.
  10. 10 . The anchor according to claim 1 , wherein the peripheral wall portion includes, on the outer peripheral surface thereof, a third male thread to be threadedly engaged with a third female thread for joining a sixth fixing target to the sleeve.
  11. 11 . The anchor according to claim 10 , comprising a first nut including the third female thread threadedly engaged with the third male thread, wherein the sixth fixing target includes a plate-shaped foundation plate having a second through-hole, and the peripheral wall portion is inserted through the second through-hole and the first nut is pressed against a top surface of the foundation plate.
  12. 12 . The anchor according to claim 11 , comprising a second nut including the third female thread threadedly engaged with the third male thread, wherein the foundation plate is placed on a top surface of the second nut.
  13. 13 . The anchor according to claim 2 , wherein the second fixing target includes a third through-hole having a tapered inner peripheral surface which is to be in surface contact with the retaining surface.

Description

TECHNICAL FIELD The present invention relates to an anchor that fixes a fixing target on a ground surface. BACKGROUND ART The following Patent Literatures 1 and 2 disclose examples of known anchors. The anchor of Patent Literature 1 fixes a bearing plate constructed on the ground to the ground. The anchor includes a rod-like anchor body to be buried in the ground, an anchorage member, and a nut. When the bearing plate is fixed, a hole provided in the ground is filled with a grout material first. In addition, the anchor body is inserted. In this manner, the anchor body is fixed by use of the grout material. At this point in time, a space is secured in the upper part of the hole. Next, the anchorage member is placed in the space in the upper part of the hole. The nut is then threadedly engaged with a male thread provided on the upper end portion of the anchor body. Consequently, a pressing force that is applied from the nut presses the anchorage member against the bearing plate from above. On the other hand, the anchor of Patent Literature 2 fixes a concrete support constructed on a slope to the slope. The anchor includes a rod-like anchor body to be buried in the slope, an anchor mounting washer, and a spherical nut body. When the concrete support is fixed, an anchor mounting hole provided in the slope is filled with a grout material first. In addition, the anchor body is inserted. In this manner, the anchor body is fixed by use of the grout material. Next, the anchor mounting washer is placed on the surface of the concrete support. The spherical nut body is then threadedly engaged with a male thread provided on the upper end portion of the anchor body. Consequently, a pressing force that is applied from the spherical nut body presses the anchor mounting washer against the concrete support from above. CITATION LIST Patent Literature PATENT LITERATURE 1: JP-A-2000-178969PATENT LITERATURE 2: JP-A-2012-246703 In terms of the anchors described in Patent Literatures 1 and 2, at the time of performance of installation work, it is necessary to provide in advance the hole for inserting the anchor body and the anchor mounting hole in the ground and the slope, respectively. Hence, there are many processes of work. Hence, there is a problem that the installation time is long and the installation cost is high. Moreover, these anchors have a configuration specialized in applications for fixing the bearing plate and the concrete support. Hence, it is difficult to fix other types of fixing targets by use of the same anchor. SUMMARY OF INVENTION The present invention handles the above problem. In other words, an object of the present invention is to provide an anchor whose number of processes of work at the time of performance of installation work can be reduced and which can selectively fix a plurality of types of fixing targets. To achieve the above objective, an anchor according to the present invention that fixes a fixing target on a ground surface includes: a rod-like shaft to be buried in a ground; a head into which a propulsive force for propelling the shaft in the ground is inputted, the head being provided, coaxially with the shaft, on an upper end portion of the shaft; and a sleeve including a tubular peripheral wall portion placed around the head, in which: in plan view, a diameter of a first circumcircle circumscribing the head is specified to be greater than a diameter of a second circumcircle circumscribing the shaft; the peripheral wall portion is provided in an upper end portion thereof with an opening portion into which a first fixing target is fitted as needed; and the peripheral wall portion is provided in a lower end portion thereof with a retainer including an opposing surface facing an outer peripheral portion of the head from below, and a retaining surface to be pressed against a second fixing target from above as needed. In this configuration, the head is provided on the upper end portion of the shaft of the anchor. The propulsive force for propelling the shaft in the ground is inputted into the head. Hence, at the time of performance of installation work, there is no need to form in advance a hole for inserting the shaft, in the ground. Therefore, the number of processes of work for the anchor at the time of performance of installation work can be reduced. As a result, the installation time can be reduced, and also the installation cost can be reduced. Moreover, the first fixing target can be fitted into the opening portion of the peripheral wall portion of the anchor. Consequently, the first fixing target can be fixed on the ground surface. Moreover, the retainer of the peripheral wall portion of the anchor can retain the second fixing target from above. Consequently, the second fixing target can be fixed on the ground surface. In other words, in terms of the anchor according to the present invention, a plurality of types of fixing targets can be selectively fixed by use of a single anchor. Moreove