JPS61265281A - Anchor driver - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an anchor driver for easily embedding an anchor in a hole provided in a concrete surface.

(Prior Art) Generally, when equipment is installed on a concrete surface, it is fixed by bolting to anchors buried in the concrete surface. The anchor is then driven into a pre-prepared hole in the concrete using an anchor driver.

Conventionally, as such an anchor driving tool, an anchor driving tool 50 shown in FIG. 5 has been generally used.

Next, the outline will be explained. In the figure, reference numeral 51 denotes a grip bar that can be held by hand, and the peripheral surfaces of cylindrical driving blocks 52 and 53 are integrally provided at both ends of the grip bar 51.

One opposite end surface of each driving block 52 and 53 is a contact surface 54 that abuts the upper end surface 71 of the anchor 70.
55, and an insertion shaft portion 56.57 is integrally formed at the center of the contact surface 54.55 to be inserted into a screw hole 72 opened at the upper end of the anchor 70 for positioning.

Further, the other end surface of each driving block is formed into a substantially flat surface and provided with driving surfaces 58 and 59 for driving with a hammer or the like,
The anchor driving tool 50 is configured as described above.

Therefore, insert the anchor 70 into the hole H made in the concrete surface (see Fig. 2), then grasp the grip 51 of the driving tool 50 with your hand and gently press the shaft 56 of the driving block 52. is inserted into the screw hole 72 of the anchor 70, and the tensile cuff o is buried in the hole H by hitting the driving surface 58 with a hammer or the like from above.

(Problems to be Solved by the Invention) However, the above-mentioned conventional anchor driving tool has the following problems.

First, the driving block is simply placed on the anchor, and the grip rod is located away from the axis of the anchor, making it extremely unstable in use. For this reason, there are problems such as poor work efficiency and time consuming, and this problem is particularly serious when the anchor is attached to a sloped surface or a ceiling surface.

Second, since the shaft of the driving block is positioned by inserting it into the threaded hole of the anchor, if the driving block is tilted with respect to the anchor due to the instability described above, the threaded part of the screw hole will It is not uncommon for the shaft to cause damage such as being crushed.

Thirdly, the shape is complicated and manufacturing processing is not easy. As a result, there is a problem in that the storage property becomes poor and the cost increases.

Therefore, the present invention aims to provide an anchor driving tool that eliminates these problems.

(Means for Solving the Problems) As shown in FIG. 1, the present invention relates to an anchor driving tool 1 particularly for driving an anchor 20 into a hole provided in a concrete surface. A driving surface 4 that is driven by a hammer is formed at the upper end, and a contact surface 5 that contacts the upper end of the anchor 20 is formed at the lower end, and at least the lower part 2a
a grip portion 2 whose diameter is approximately the same as or smaller than the outer diameter of the anchor 20;
In addition, the bolt portion 3 is configured to be screwed into the screw hole 21 of the anchor 20.

(effect) Next, the operation of the present invention will be explained.

First, in use, the bolt portion 3 of the anchor driving tool 1 according to the present invention is screwed into the screw hole 21 of the anchor 20. As a result, the contact surface 5 comes into contact with the upper end of the anchor 20 as shown in FIG. 2, and the anchor driving tool 1 and the anchor 20 are integrated. Then, in this state, insert the hair anchor 20 into the hole H provided in the concrete surface C, hold the grip part 2 with one hand, and drive the anchor 20 with a hammer or the like while holding the driving surface 4 with the other hand. It can be fixed in hole H. Thereafter, the anchor driver 1 can be removed from the anchor 20 by turning the grip part 2 by hand.

(Example) Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

Fig. 1 is a perspective view of an anchor driving tool according to the present invention, Fig. 2 is a half-cut cross-sectional view showing the state in which an anchor is attached to the anchor driving tool, and Fig. 3 is an explanatory diagram of the use of the anchor driving tool. , FIG. 4 is a partial perspective view of an anchor driving tool according to a modified embodiment of the present invention.

First, the structure of the anchor driving tool will be explained based on FIG. First, the grip part 2 is formed entirely into a round rod, and its outer diameter is slightly smaller than the outer diameter of the seven anchors 20. The upper end of the grip part 2 forms a driving surface 4, and this driving surface 4 is a flat surface cut perpendicularly to the axis of the grip part 2. In addition,
The axial length of the grip part 2 is selected to be at least long enough to be gripped by hand, but not too long in consideration of weight reduction, miniaturization, ease of use, material saving, etc.

On the other hand, the bolt part 3 is formed by cutting a round bar with a predetermined length left below the grip part 2 to reduce its diameter, and cutting this reduced diameter part with a die or the like to form a threaded part 3a. This threaded portion 3a has a shape to be screwed into the threaded hole 21 on the anchor 20 side, and its length is selected so as not to be too long so that it can be easily attached to and removed from the anchor 20. In addition, the bolt part 3
After cutting the round bar body to form the diameter, a cross section is formed between the reduced diameter part and the grip part 2, but this cross section is a ring-shaped flat surface perpendicular to the axis. The abutment surface 5 is then formed.

As described above, the entirety of the constituent anchor driver l is made of a hard metal, and it is desirable that the whole or a portion, especially the upper and/or lower part, be hardened by quenching or the like.

Such an anchor driving tool 1 can be manufactured extremely easily by simply cutting a round bar into predetermined lengths and forming the bolt portion 3, and can be mass-produced at low cost. can be achieved.

Next, the method of use will be explained with reference to FIGS. 2 and 3.

First, according to a known method, a hole H, which is a concave portion with a circular cross section, is provided in the concrete surface C as shown by the imaginary line shown in FIG. On the other hand, the anchor 20 is inserted into the screw hole 21 with the anchor driver 1.
Screw together the bolt portions 5. Note that the anchor 20 is the second
As shown in the figure, a known anchor includes a cylindrical anchor body 22, a plurality of grooves 23 formed in the lower half of the anchor body 22, and a wedge 24 whose outer periphery is tapered inserted from below. It is.

When the bolt portion 5 of the anchor driver 1 is completely screwed onto the anchor 20, the contact surface 5 comes into contact with the upper end surface 22a of the anchor 20. Therefore, as shown in FIG. 3, insert the anchor 20 into the hole H, grasp and hold the grip part 2 with one hand, hold the hammer T with the other hand, and use the hammer T to drive the anchor. All you have to do is hit the hitting surface 4 of No. 1. As a result, the impact is transmitted from the contact surface 5 to the anchor 20, and the wedge portion 24 of the anchor 20 enters into the anchor body portion 22. As a result, the lower part of the anchor body 22 is pushed out and pressed against the inner wall of the hole H, so that the anchor 20 is fixed within the hole H. Since the grip part 2 has a smaller diameter than the anchor 20, the grip part 2 can easily fit into the hole H. On the other hand, after driving, the anchor driving tool 1 is inserted into the anchor 2.
It is also easy to remove from zero.

Next, a modified embodiment will be described with reference to FIG.

In the modified embodiment, the upper half of the anchor driving tool 1 shown in FIG. 1 is modified. The anchor driving tool 30 shown in FIG. 4 has a flange 31 having a relatively large diameter and a constant thickness integrally formed on the upper end of the grip 2. The upper surface of the flange 31 has a flat driving surface 32. to form. This flange portion 31 allows the area of the driving surface 32 to be made larger, making driving easier with the hammer T, and protecting the hand holding the grip portion 2.

In addition, the outer peripheral surfaces of the grip part 2 and the flange part 31 are formed in a tapered shape to improve strength, improve the appearance, and further protect the hand, and the outer peripheral surface of the flange part 31 is formed with unevenness to prevent slipping. This makes attachment to and removal from the anchor easier.

Although the embodiments have been described above, the present invention is not limited to these embodiments, and arbitrary changes in the detailed shape, structure, materials, etc. that do not depart from the spirit of the present invention are within the scope of the present invention. It is acceptable.

(Effects of the Invention) As described above, the anchor driving tool according to the present invention has a driving surface that is driven by a hammer at the upper end, a contact surface that comes into contact with the upper end of the anchor at the lower end, and at least the lower part. It is composed of a grip part whose diameter is approximately the same as or less than the outer diameter of the anchor, and a bolt part integrally formed within the abutment surface and screwed into the threaded hole of the anchor. Obtaining great effects such as.

■During driving, the anchor driving tool is fixed to the anchor, making it extremely stable. Moreover, since the anchor is fixed on the axis of the grip part, further stability can be achieved. Therefore, the work becomes easier, and work efficiency and safety can be improved.

(2) The bolt part fits into the threaded hole of the anchor, and since the impact is transmitted through the contact surface, the quality can be improved by completely eliminating damage to the threaded hole of the anchor.

■The overall shape of the anchor driving tool is simplified, and manufacturing and processing are extremely easy, especially if a round bar body is used as in the optimal embodiment, which reduces costs, improves storage, and improves portability. can.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an anchor driving tool according to the present invention, Fig. 2 is a half-cut cross-sectional view showing the state in which an anchor is attached to the anchor driving tool, and Fig. 3 is an explanatory diagram of the use of the anchor driving tool. , FIG. 4 is a partial perspective view of an anchor driving tool according to a modified embodiment of the present invention;
FIG. 5 is a perspective view of a conventional anchor driving tool. In the drawing, ■... Anchor driving tool, 2 Grip part, 2a... Lower part, 3 Bolt part, 4 Driving surface, 5 Contact surface.

Claims (1)

[Scope of Claims] 1. A driving surface that is driven by a hammer is formed at the upper end, and a contact surface that comes into contact with the upper end of the anchor is formed at the lower end, and at least the diameter of the lower part is approximately equal to the outer diameter of the anchor. An anchor driver comprising a grip part formed to have the same diameter or less, and a bolt part integrally formed within the abutment surface and screwed into a screw hole of the anchor. 2. The anchor driving tool according to claim 1, wherein the grip portion is formed of a round bar.