JPS61176730A - Anchor - 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] [Industrial application field] FIELD OF THE INVENTION The present invention relates to anchors.

[Conventional technology]

Conventionally, an anchor for attaching a hook body, etc. to a plate-shaped object such as a wooden wall or board of a building has a hook member that comes into contact with the back side of the object when attached, and a screw for attaching. The connection between the hanging member and the threaded rod is as shown in Utility Model Publication No. 40-11929, by providing protruding shafts on both sides near the tip of the threaded rod, and extending the protruding shafts on both sides of the hanging member. They were fitted into slanted holes drilled in the direction of the wind.

[Problem that the invention seeks to solve]

The above technology has problems in that the structure is complicated, the cost is high, and the installation workability is poor.

The present invention solves these conventional problems and provides an anchor that can be attached to plate-shaped objects such as building walls and boards with high efficiency and that can reduce manufacturing costs. With the goal.

[Means for solving problems]

The anchor of the present invention includes a metal threaded rod having a male threaded portion; a male threaded portion having a thread of the same type, outer diameter, and pitch as the male threaded portion of the metal threaded rod; a plastic threaded rod, which has a threaded part connected to the metal threaded thread so that the threads form a continuous spiral; It consists of a latching member that comes into contact with the back surface of the holder in an attached state; and;

[For production]

With the configuration as described above, by screwing the locking member to the distal end of the bent portion of the plastic screw rod, and gently shaking the locking member approximately 90 degrees with the fingers of the hand, the metal screw rod will be attached. can be made in line with When the user releases his or her finger from the locking member, the locking member attempts to return to its original state (perpendicular to the axial direction of the metal screw rod) due to the resilient restoring force of the plastic screw rod.

〔Example〕

Hereinafter, the present invention will be explained in detail based on drawings shown in examples.

In FIGS. 1, 2, and 3, reference numeral 1 denotes an anchor, and a metal threaded rod 3 made of metal has a male threaded portion 2;
a plastic threaded rod 5 made of plastic that is connected to the tip of the metal threaded rod 3 and has a male threaded portion 4;
The locking member 7 has a screw hole 6 in which both male threaded portions 2.4 can be screwed forward and backward. The metal threaded rod 3 is a bolt having a hexagonal head 8 at the base end, and the male threaded portion 4 of the plastic threaded rod 5 has the same type, outer diameter, and pitch as the male threaded portion 2 of the metal threaded rod 3. It has threads arranged in a continuous spiral. Specifically, as shown in FIG. 4, the plastic threaded rod 5 has a flat portion 9.9 formed on the outer periphery along the axial direction, and furthermore, as shown in FIG. The bent portion 10 is formed with a thickness dimension Y that is narrower than the dimension X between the flat portions.

Further, the thickness Y of the bent portion 10 is set to such a size that the distal end side of the bent portion 10 can swing as indicated by arrow A in FIG. 1.

Next, FIG. 6 is an enlarged sectional view of part 7 in FIG. 3, showing a state in which the metal screw rod 3 and the plastic screw rod 5 are connected. (I) is a blind hole 11 from the tip of the metal screw rod 3.
is formed in the axial direction, and a small hole 11 is formed in the radial direction.
a... are formed, and the base end of the plastic screw rod 5 is inserted and fixed into the hole 11 and the small hole 11a. In (n), the deep part of the hole 11 is formed wide. (■) indicates that a small-diameter male screw portion 12 is provided at the base end of the plastic threaded rod 5, and is screwed into a screw hole 11b formed at the tip of the metal screw rod 3.

The hanging member 7 is a rectangular flat plate made of metal, and has a bent portion 10.
It is screwed onto a plastic screw rod 5 at the tip. Therefore, the locking member 7 can be oscillated as shown by the arrow A, and can also be attached to the plastic threaded rod 5 through the continuous spiral thread.
It can be smoothly threaded from the metal threaded rod 3 to the proximal end of the metal threaded rod 3.

By the way, as a method for forming the male threaded portion 4 of the plastic threaded rod 5 and the male threaded portion 2 of the metal threaded rod 3 into a continuous spiral shape, the threads are shown in FIGS. 6(1), (n) (III). )
After fixing the connection, you can cut or roll the male thread using one of the following methods, or first form a thread on only one side, connect the other to it, and then attach the thread to the other after connecting. In order to attach the anchor 1 constructed as described above to a plate-shaped object W such as a wooden wall or board of a building, as shown in FIG. Bend it with your fingers so that it is approximately parallel to the axis of the threaded rod 3, and insert it into the through hole 13 provided in the object W to be attached as shown by arrow B.

Then, the inserted locking member 7 returns to its original state (perpendicular to the axial direction of the metal screw rod 3) as shown by arrow C in FIG. Then, when the anchor 1 is pulled as shown by the arrow in FIG. Then, the plastic screw rod 5 and the metal screw rod 3 are successively screwed into the screw hole 6 of the hanging member 7. In FIG. ,1
6 is a washer, and these are attached to the object W to be attached via the anchor 1 and the hooking member 7.

Note that the head of the metal screw rod 3 may be a leading end, a flat head, etc., and the metal screw rod 3 may be integrated with the hook body. It may also be headless.

In the above embodiment, since the plastic screw rod 5 has flat parts 9, 9 formed on its outer periphery and is flat, the hanging member 7 swings greatly when swinging.

Next, in another embodiment shown in FIG. 11, a metal screw rod 3.
has a top-shaped head 8, and a swingable (bendable) plastic member 19 is fixed to the tip of the metal screw rod 3, and the plastic member 19 has a metal or The tip screw member 20 made of plastic is fixed.

The tip screw member 20 and the metal screw rod 3 are different types of screws.
They are connected by the plastic member 19 so that their outer diameters and pitches are exactly the same, and their threads are in a continuous spiral. In other words, a part of the bolt, which was originally a single bolt, is cut and removed by a predetermined small size M, and the bolt is bridged by the plastic member 19 without mutually rotating at all.

Therefore, as shown by the arrow A and the imaginary line in the figure, the plastic member 19 corresponds to the bending part 10 and is swingable.

Therefore, the length P of the screw hole 6 portion of the hanging member 7 is as follows:
Please set it larger than the above dimension M (.

When used, it is necessary to smoothly transfer from the screw thread of the tip screw member 20 to the screw thread of the metal threaded rod 3 while screwing into the locking member 7.

In this way, if the hooking member 7 is screwed onto the distal end 17 of the metal screw rod 3, the hooking member 7 can swing as in the above embodiment, and can be attached to the proximal end of the metal screw rod 3. It is possible to spiral up to. That is, the anchor 1 of this embodiment can also be attached to the object W to be attached in the same manner as in the above embodiment. 18.18
is a locking piece protruding from the locking member 7, which is attached to the object W to be attached.
It bites into the back surface 14 of the metal screw rod 3 when it comes into contact with the metal threaded rod 3, thereby making it possible to screw the metal threaded rod 3 more reliably.

〔Effect of the invention〕

In the anchor of the present invention, if the hanging member is screwed onto the tip of the bent part of the plastic screw rod perpendicular to the axial direction of the metal screw rod, the locking member can be lightly pressed with a finger or the like, and the metal It can be parallel to the axial direction of the threaded rod, and when the finger is removed from the latching member, the latching member returns to its original state (the axial center of the metal threaded rod) due to the restoring force of the plastic threaded rod. direction and perpendicular direction). Therefore, the hanging member and the metal screw rod can be easily inserted into the through-hole for attachment to a plate-shaped object such as a building wall or board, and the hanging member can be attached to the back side of the object. Since it is easily abutted and latched, the metal screw rod is firmly latched. In addition, the total number of parts is small and it can be manufactured at low cost. In particular, since the screw threads of both male threaded portions 2.4 are of the same type, outer diameter, and pitch, it is possible to smoothly transfer and screw on the back surface 14.

[Brief explanation of drawings]

FIG. 1 is a side view showing one embodiment of the present invention, FIG. 2 is a front view, FIG. 3 is a partially sectional plan view, FIG. 4 is an enlarged sectional view taken along line E-E in FIG. 3, and FIG. The figure shows F − in Fig. 3.
FIG. 6 is an enlarged longitudinal sectional view of the second part in FIG. 3, FIGS. 7 to 10 are cross-sectional side views for sequentially explaining the installation work, and FIG. 11 is another embodiment. FIG. 2... Male threaded part, 3... Metal threaded rod, 4... Male threaded part, 5... Plastic threaded rod, 6... Screw hole,
7...Latching member, 10...Bending portion, 14...Back surface, W...Object to be attached.

Claims (1)

[Claims] 1. A metal threaded rod 3 having a male threaded portion 2; and a male threaded portion 4 having threads of the same type, outer diameter, and pitch as the male threaded portion 2 of the metal threaded rod 3. a plastic threaded rod 5 which has a bending part 10 that can be oscillated and is connected to the metal threaded rod 3 so that the threads thereof form a continuous spiral; 4 has a screw hole 6 that can be screwed back and forth, and abuts on the back surface 14 of the object W to be attached in the attached state.
An anchor comprising: and.