JP4450650B2 - anchor - Google Patents

Description

  The present invention relates to an anchor used when installing a vending machine and various machines.

  In Patent Document 1, “a screw called a pulling member, a pipe-shaped push-out cylinder provided in an externally fitted state on the screw, and a lower part of the push-out cylinder are engageable. And an anchor composed of a claw member having a plurality of cut pieces ”.

  The anchor is formed by inserting the remaining part of the screw into the foundation so that the upper end of the screw protrudes from the through hole of the plate body laid on the upper surface of the foundation such as concrete, and pulling up the protruding upper end. Since the pushing cylinder is regulated on the lower surface of the body, the lower end surface of the pushing cylinder can spread the spire of the notch piece of the claw member. In correlation with the amount to be lifted, the cut piece is spread in a reverse umbrella shape. Therefore, there exists an advantage that an anchor becomes strong with respect to extraction.

  However, since there is no guideline (standard) for pulling up the screw in the above configuration, the amount of expansion (outside expansion angle) of the push-out cylinder differs depending on the amount of pull-up of the screw. There is a problem that the outer expansion angle of the lens does not always become a desired angle.

  Further, Patent Document 2 also states that “a screw having a square head at the upper end, a shell-shaped cylindrical body mounted in a loosely fitted state on the screw, and a position between the cylindrical body and the screw. "A building wall bolt comprising a nut screwed into the screw and a plurality of enlarged cylinders having a plurality of notches and provided at the lower end of the screw" is described.

  The bolt configured as described above has a configuration in which the screw rises by tightening the nut, so that the shell-shaped cylindrical body pushes a plurality of enlarged cylinders, and thus basically the same configuration as in Patent Document 1. is there.

However, since this bolt also has no standard (standard) as in Patent Document 1, the expansion cylinder cannot be pushed to a desired angle corresponding to the type of foundation (hard ground, relatively soft ground, etc.). There was a drawback.
JP-A-5-332330 Japanese Utility Model Publication 43-4603

  A first object of the present invention is to propose an anchor that can always push a cut piece of a cylindrical claw member to a predetermined outer expansion angle even if it is not an expert. The second purpose is that it can be manufactured at low cost by adopting a rational configuration. The third object is to change the length of the inner cylinder of the pipe-shaped stopper, and always cut the cut piece of the cylindrical claw member into a predetermined shape corresponding to the qualitative type of foundation such as hard ground or relatively soft ground. That is, it can be expanded to the outside expansion angle.

The anchor of the present invention includes a screw 1 corresponding to a member to be pulled, a pipe-like outer cylinder 2 provided in an externally fitted state on the screw, and a lower part of the outer cylinder for pushing. And an anchor made of a cylindrical claw member 3 having a plurality of claw-shaped cut pieces 8, and a pipe-shaped stopper inner cylinder 5 having a required length is fitted to the screw 1. When a predetermined amount of the tightening means 4 that is screwed into the upper end portion of the screw is tightened, the insert piece 8 of the outer cylinder 2 for pushing is pushed out to a predetermined outer expansion angle via the outer cylinder 2 for pushing. It is characterized by that.
In the above configuration, the pipe-shaped inner cylinder is formed of a synthetic resin material and is longer by a predetermined amount than the pushing cylinder.

(1) At the stage where the tightening member 4 is tightened, the stopper function of the stopper inner cylinder 5 acts. Then, when the tightening is stopped immediately when the tightening cannot be performed, the opening of the cut piece 8.8 of the claw member 3 has an optimum target angle (for example, 45 degrees, 120 ° in relation to the quality of the foundation 21). Degrees). Therefore, since the stopper inner cylinder plays the role of a gauge (standard), it is possible to always obtain the optimum opening and tightening position even if it is not an expert.
(2) By adopting a rational configuration, it can be manufactured at low cost.
(3) The invention according to claim 2 can increase the contact area with the foundation such as earth and sand, while the cut piece is easily displaced outwardly.
(4) In the invention according to claim 4, the cut piece of the cylindrical claw member is adapted to the qualitative type of the foundation such as hard ground or relatively soft ground simply by changing the length of the stopper inner cylinder. Can always be expanded to a predetermined outer expansion angle.

  Hereinafter, the best mode (first embodiment) for carrying out the present invention shown in FIGS. 1 to 7 will be described.

  The anchor X is a screw 1 corresponding to a member to be pulled, 2 is a pipe-shaped outer cylinder that is provided in an externally fitted state on the screw, and 3 is loosely fitted below the outer cylinder for the opening. 4 is a fastening means for screwing into the upper end of the screw, and 5 is a pipe-like stopper inner cylinder that is loosely fitted to the screw. Reference numeral 21 denotes a base, and 22 denotes a base plate having a through hole 23. Hereinafter, these basic components will be mainly described.

(1) Screw 1 The screw 1 is a metal rod-like body, and has a length of about 43 cm, for example. The screw 1 is inserted into a hole made in the base 21 such as a hard ground suitable for installing a vending machine or a relatively soft ground, or is appropriately driven. In this case, the upper end 1a of the screw 1 is For example, it protrudes from the through hole 23 of the plate 22 laid on the upper surface of the foundation 21.
On the other hand, a locking nut 6 for the cylindrical claw member 3 is screwed to the lower end 1b of the screw 1 in this embodiment. The retaining nut 6 includes a nut portion 6a and a semicircular spherical head portion 6b that is connected to the nut portion 6a. The screw 1 is a member that is pulled upward when the fastening means 4 is fastened via a plate or the like.

(2) Push-out outer cylinder The push-out outer cylinder 2 is formed of a metal in the shape of a pipe and is externally fitted to the screw 1. Since the stopper inner cylinder 5 is interposed between the screw 1 and the outer cylinder 2 for pushing, the outer diameter of the screw 1 and the inner diameter of the outer cylinder 2 for pushing are appropriately set, A slight gap 7 is provided between the outer wall surface of the screw 1 and the inner wall surface of the outer cylinder 2 for pressing. Therefore, the outer cylinder 2 for pushing and opening is provided in the screw 1 in a loose fit.

  The length of the outer cylinder 2 for opening is about 31 cm, for example, and is shorter than the screw 1. That is, when the outer cylinder 2 for push-opening is loosely fitted to the screw 1, the upper and lower ends 1 a. 1b includes upper and lower end surfaces 2a. Each protrudes from 2b.

(3) Cylindrical Claw Member The claw member 3 is engageable with the tapered lower end surface 2 b of the outer cylinder 2 for pushing and is provided in a loosely fitted state on the lower end 1 b of the screw 1. Although the cylindrical claw member 3 itself having a plurality of cut pieces 8.8 is already known as described in Patent Document 1, the cylindrical claw member 3 of the present embodiment is located at a portion near the lower end. A pair of horizontal second cutouts 10.10 communicating with the pair of vertical first cutouts 9.9 is formed. As a result, the two nail-like cut pieces 8.8 can be easily displaced outwardly in the shape of petals. Note that the number of nail-like cut pieces 8 is not limited as long as it is a plurality of pieces (three, four, etc.).

(4) Tightening means The fastening means 4 is screwed into the upper end portion 1a of the screw 1. The tightening means 4 of the present embodiment is inserted into the upper end portion 1 a of the screw 1 in a penetrating manner and is mounted on the upper surface of the base 22 and the ring-shaped washer 4 a placed on the upper end surface 2 a of the outer cylinder 2 for push-off. It consists of a tightening nut 4b for pulling up the screw 1 through the washer 4a pressed against the laid plate body 22 in a surface contact state. Of course, the fastening means 4 may be only a suitably-sized fastening nut 4b, and the fastening nut 4b and the washer 4a may be integrated.

(5) Inner cylinder of stopper The inner cylinder 5 of the stopper is an outer cylinder for piercing that, when the fastening means 4 is tightened by a predetermined amount, pushes the two cut pieces 8.8 of the claw member 3 to a predetermined outer expansion angle. The body 3 is stopped at a predetermined position. Therefore, the stopper inner cylinder 5 is a synthetic resin material that is easy to cut, and is formed in a pipe shape that is a predetermined amount longer than the outer cylinder 2 for pushing (common name, “PVC pipe”).

  Thus, in this embodiment, the stopper inner cylinder 5 can be obtained by changing the length of the pipe-like stopper inner cylinders 5A and 5B (selecting arbitrarily) as shown in FIG. Corresponding to the qualitative type of the foundation such as the soft ground 21, the cut piece 8.8 of the claw member 3 can always be pushed up to a predetermined outer expansion angle (for example, 45 degrees, 120 degrees, etc.). That is, when the inner cylinder 5A is long, it is for 45 degrees suitable for a hard ground, whereas when the inner cylinder 5B is short, it is for 120 degrees suitable for a soft ground.

(6) Assembly In the above configuration, when assembling each member, first, either the shorter inner cylinder 5A or the longer inner cylinder 5B is selected and fitted into the screw 1 in the screw 1 . In this case, the upper and lower ends 1a. 1 b protrudes from the stopper inner cylinder 5. Next, the outer cylinder 2 is loosely fitted to the stopper inner cylinder 5. In this case, the upper end portion 5 a of the stopper inner cylinder 5 is located inside the upper end surface 2 a of the outer cylinder 2, while the lower end portion 5 b of the stopper inner cylinder 5 is the outer cylinder 2. While protruding from the lower end surface 2b, it can penetrate deeply into the claw member 3, and the lower end surface can be supported by an inner surface of a lock nut 6 described later.

  Therefore, the cylindrical claw member 3 is fitted into the lower end 1b of the screw 1 and the locking nut 6 is screwed into the lower end 1b. In this case, the locking nut 6 stops at a predetermined position, and the upper end edge of the claw-shaped cut piece 8.8 of the cylindrical claw member 3 abuts on a part of the tapered lower end surface 2b of the outer cylinder 2 or Engage.

  As described above, the lower end portion 5b of the stopper inner cylindrical body 5 falls deeply into the cylindrical claw member 3. However, the upper end portion 5a of the stopper inner cylindrical body 5 corresponds to the outer cylindrical body 2 by the amount of the depression. Since it is separated from the upper end surface 2a, this separated amount (reference) pushes the cut piece 8.8 of the cylindrical claw member 3 apart.

(7) Operation In the above configuration, the anchor X is inserted into a hole formed in the base 21 suitable for installing a vending machine, for example, or is appropriately driven. In this case, the upper end 1 a of the screw 1 protrudes from the through hole of the plate 22 laid on the upper surface of the foundation 21 by a required amount.

  First, the fastening means 4 is attached to the upper end 1a. When the tightening means 4 is tightened by a predetermined amount, the screw 1 is pulled upward in correlation with the tightening amount of the tightening means 4, so that the outer cylinder 2 for push-out is formed with a cylindrical claw member via its lower end surface 2 b. The third cut piece 8.8 is spread to a predetermined outer expansion angle (for example, spread in a reverse umbrella shape).

  When the upper end surface 5a of the stopper inner cylindrical body 5 reaches the same plane as the upper end surface 2a of the outer cylindrical body 2 as the screw 1 rises, the tightening means 4 cannot be tightened, and the claw member 3 The cut piece 8.8 is always opened to a predetermined outer expansion angle.

  In the column of this embodiment, the second embodiment will be described. In the description of the second embodiment, the reference numerals of the first embodiment are used for convenience in order to avoid redundant description.

  The anchor X1 of the second embodiment shown in FIGS. 8 and 9 is mainly different from the anchor X of the first embodiment in that a cylindrical claw member 3A and a retaining nut are provided at the lower end 1b of the screw 1A. 6A is integrally formed into “one member”. In this embodiment, the lower end portion 5b of the stopper inner cylinder 5A enters the fitting space 11 formed between the inner wall surface of the cylindrical claw member 3A and the outer wall surface of the lower end portion 1b of the screw 1A. The end surface of the lower end portion 5 b is supported by the bottom surface of the annular inner wall that forms the fitting space 11. Even if configured in this manner, there are the same operations and effects as in the first embodiment.

  Further, the anchor X2 of the third embodiment shown in FIGS. 10 and 11 is mainly different from the anchor X of the first embodiment in that a locking nut 6 is integrally formed at the lower end portion of the screw 1. The cylindrical claw member 3B is screwed. Thus, even if the cylindrical claw member is arbitrarily shaped, the substantial configuration of the present invention does not change.

  The present invention is used when installing vending machines and various machines outdoors.

1 to 7 are explanatory views showing a first embodiment of the present invention. FIGS. 8 to 9 are explanatory views (second embodiment) in which a part of the first embodiment is modified, and FIGS. 10 to 11 are explanatory views in which a portion of the first embodiment is changed (third). Example).
BRIEF DESCRIPTION OF THE DRAWINGS Schematic explanatory drawing which shows embodiment of 1st Example (front view of an environment). FIG. Explanatory drawing which compared the length of the outer cylinder body and the inner cylinder body. Explanatory drawing which looked at the nail | claw member from the plane. The longitudinal cross-sectional view of the combined state. The longitudinal cross-sectional view of the state pushed out. Explanatory drawing of the stopper inner cylinder from which length differs. The front view of 2nd Example. The longitudinal cross-sectional view of the principal part. The disassembled perspective view of 3rd Example. Longitudinal section of the main part

Explanation of symbols

X, X1, x2 ... 1, 1A ... screw, 2 ... pushing outer cylinder, 2a ... upper end surface, 2b ... lower end surface, 3,3A, 3B ... cylindrical claw member, 4 ... clamping means, 5 ... Inner cylinder of stopper, 5a ... upper end, 5b ... lower end, 6, 6A ... locking nut, 7 ... gap, 8 ... notch piece, 9 ... first notch, 10 ... second notch, 11 ... fitting space, 21 ... foundation, 22 ... base plate, 23 ... through hole.

Claims (6)

A screw 1 corresponding to a member to be pulled, a pipe-shaped outer cylinder 2 for push-off provided in an externally fitted state on the screw, and a lower part of the outer cylinder for push-off. In addition, the anchor is composed of a cylindrical claw member 3 having a plurality of claw-shaped cut pieces 8, and a pipe-shaped stopper inner cylinder 5 having a required length is fitted to the screw 1, and is attached to the upper end of the screw. When the fastening means 4 to be screwed is fastened by a predetermined amount, the anchoring piece 8 of the push-out outer cylinder 2 is pushed through the push-out outer cylinder 2 to a predetermined outside expansion angle. . 3. The anchor according to claim 1, wherein the claw member 3 has a second lateral notch 10.10 communicating with the pair of first longitudinal notches 9.9 at a portion near the lower end. . The anchor according to claim 1, wherein the stopper inner cylinder is formed of a hard synthetic resin material and is longer by a predetermined amount than the pushing cylinder. The anchor according to claim 1, wherein a cylindrical claw member is integrally formed at a lower end portion of the screw. 2. The anchor according to claim 1, wherein a cylindrical claw member integrally formed with a lock nut is screwed to a lower end portion of the screw. 2. The anchor according to claim 1, wherein there are two or more types of stopper inner cylinders having different lengths.

Images