JPH0791417A - Member fixing tool - Google Patents

Abstract

PURPOSE:To prevent destruction of a layer into which a member fixing tool is driven by providing a flange at one end of a cylinder main body, a pointed section at the other end of an outer cylinder which has a hole in the vicinity of the other end, a shaft which is inserted from one end of the outer cylinder, an anchor member whose the other end faces the hole of the outer cylinder, and a detachable spacer cylinder between the flange and the shaft head and forming a positioning recessed section on the anchor member. CONSTITUTION:When a head 2b of a shaft 2 is hit, an outer cylinder 1 and the shaft 2 become integral with a spacer cylinder 6, and the outer cylinder 1 is driven down to a flange lb and stops The outer cylinder 1 is compressed by the head 2b. Force by force in the direction of radius on a thick wall section 6a is generated in the upper section of a spacer cylinder 6 on an inclined face 6c of the spacer cylinder 6 and a tapered face 2c of the shaft 2 with a shaft core as a boundary. The spacer cylinder 6 is broken as shown by a virtual line and comes off from the shaft 2. Since there is a positioning recessed section 2d on a lower end face of the shaft 2, axial lines of the shaft 2 and the anchor member 4 coincide and are held, and the anchor member 4 goes out of a hole 1c of the outer cylinder smoothly to take a well-balanced posture and becomes an anchor which opposes to pull-out force of a nail. As a consequence, the surrounding of a layer into which a member fixing tool is driven is not improperly destructed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixture for fixing members such as nails and scales.

[0002]

2. Description of the Related Art One example of conventional technology is disclosed in Japanese Utility Model Laid-Open No. 62-196914. In this technique, the leg portion of the nail is divided into a pair of leg pieces along the axial direction, and a thin strip plate which is easily bent is sandwiched between the leg pieces. Then, as the nail was driven into the aerated concrete, the concrete layer entered between the leg pieces from the bottom of the leg pieces,
The strip plate is folded upward in a zigzag shape, and the two leg pieces open in an eight-shape to form an anchor.

[0003]

However, in the above-mentioned technique, since the legs of the nail open in an eight-shape at the same time when the nail is driven in, the nail is undesirably destroyed and a cavity is formed.
The pullout resistance is weak.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide a member fixing tool which does not undesirably destroy the driving layer when driving.

[0005]

In order to solve the above problems, the structure of the present invention is as follows. That is, the first configuration is such that an outer cylinder having a flange at one end of the cylinder body and a hole near the other end, a pointed portion integrally bent or fixed to the other end of the outer cylinder, and the outer cylinder. A shaft that is inserted from one end of the shaft and has a head at one end, and is interposed between the other end of the shaft and the apex,
A bar-shaped anchor member having the other end facing the hole of the outer cylinder, and a detachable spacer cylinder interposed between the outer cylinder flange and the shaft head, and at the anchor member side end surface of the shaft. Means that the positioning recess is formed.

In the second structure, an outer cylinder having a flange at one end of the cylinder body and a hole near the other end, and a pointed portion integrally bent or fixed to the other end of the outer cylinder, the outer cylinder Inserted from one end of the cylinder, the outer peripheral surface is provided with a shaft provided with a convex portion that serves as a retainer in the interference with the inner surface of the outer cylinder, and is interposed between the other end of the shaft and the pointed portion, The other end includes a rod-shaped anchor member facing the hole of the outer cylinder, and a positioning recess is formed on an end surface of the shaft on the anchor member side.

[0007]

[Operation] When you hit the head of the shaft with a hammer and drive it in,
Since the outer cylinder and the shaft have the spacer cylinder, they are integrated and the outer cylinder is driven up to the flange and stopped. When subsequently hit, the outer cylinder is stopped from moving by the flange, so that it is compressed by the head of the shaft and the spacer cylinder is broken and separated.

With the subsequent impact, the shaft head is driven up to the surface of the flange of the outer cylinder. At this time, the anchor member goes out of the hole of the outer cylinder and enters the inside of the base material. This creates an anchor that resists the pulling force. Since the lower end surface of the shaft has a positioning recess, the shaft and the anchor member are held so that their axes are substantially aligned with each other, and the anchor member smoothly goes out of the outer cylinder.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below based on an embodiment shown in the drawings.

1, 2 and 3, the outer cylinder 1 has a concentric round flange 1b at the upper end of a cylindrical main body 1a made of steel, and the lower end is bent to form a point 1d. In addition, holes 1c are provided at two diametrically opposed locations near the pointed portion 1d. The hole 1c of the outer cylinder is a long hole that is long in the axial direction of the outer cylinder.

The cylindrical main body 2a of the steel shaft 2 is inserted from the upper end of the outer cylinder 1 and has a concentric round head 2b at the upper end, and the head side is located at the boundary between the shaft main body 2a and the head 2b. A widening taper surface 2c is formed. A positioning recess 2d is formed on the lower end surface of the shaft 2. Then, an adhesive (or pressure-sensitive adhesive) 3 is applied to the outer periphery of the columnar body 2a, and the shaft 2 is prevented from coming off by adhesion or friction with the inner surface of the cylindrical body 1a of the outer cylinder 1.

The rod-shaped anchor member 4 is interposed between the lower end of the shaft 2 and above the pointed portion 1c, and the lower end faces the hole 1c of the outer cylinder 1. The anchor member 4 is made of a round wire made of steel, which is bent in an inverted U shape, and both ends 4a of the wire are on the lower side. The both ends 4a are bent so as to face the hole 1c of the outer cylinder 1. ing.

The spacer cylinder 6 includes an outer cylinder flange 1b and a shaft head 2.
It is interposed between b and. The spacer cylinder 6 is made of a plastic (synthetic resin) cylinder, and is thinner (thin-walled portion 6a) than the other portion (thick-walled portion 6a) on one side with the axial direction as a boundary.
Has been done. An inclined surface 6c is provided at the shaft head side end surface of the one side portion (thin portion 6b) so that the upper surface of the thin portion 6b is lowered.

A washer 9 is interposed at the boundary between the spacer 6 and the cylinder body 1a.

In the above, in FIG. 4, the exterior material A such as roof tile or wood board is attached to the surface of the lightweight cellular concrete base material B.
The case of fixing with the nail of the present invention will be described. Axis 2 with a hammer
When the head 2b of the head is hit and driven, the outer cylinder 1 and the shaft 2 are
Has a spacer tube 6, so they are integrated,
The outer cylinder 1 is driven up to the flange 1b and stops.

When subsequently hit, the outer cylinder 1 is flanged 1b.
Since the movement of the spacer 2 is stopped by the head 2b of the shaft 2, it is compressed by the head 2b of the shaft 2, and the inclined surface 6c of the spacer cylinder 6 and the tapered surface 2c of the shaft 2 cause the radius toward the thick portion 6a side with respect to the axis. A directional component force is generated at the upper part of the spacer cylinder 6. For this reason, the spacer cylinder 6 inclines from the upper portion in the radial direction from the upper portion, as shown in phantom, and the thin portion 6b is strongly pressed by the shaft 2 and is broken from the shaft 2. When the shaft is driven, the spacer cylinder is gently separated in almost one direction without vigorously scattering around. At this time, the washer 9
Prevents the lower part of the spacer cylinder 6 from being caught between the shaft and the outer cylinder.

By the subsequent impact, the adhesion of the adhesive 3 is released, and the shaft head 2b is driven through the washer 9 to the surface of the flange 1b of the outer cylinder 1. At this time, the anchor member 4 sequentially comes out from the hole 1c of the outer cylinder in the axial direction and enters the inside of the base material B.

Here, the positioning recess 2 is formed on the lower end surface of the shaft 2.
Since there is d, the shaft 2 and the anchor member 4 are held so that their axes are substantially aligned with each other, and the anchor member 4 smoothly exits from the outer cylinder. Further, since the hole 1c is a long hole, strict accuracy is not required for positioning the tip of the anchor member 4 with respect to the hole. Moreover, the direction is guided in the length direction of the hole 1c,
There is a case where the anchor member 4 goes out of the outer cylinder, and in this case, the anchor member 4 has a balanced posture in the portion that comes out of the outer cylinder. This provides an anchor against the pulling force of the nail. Further, since the spacer cylinder 6 is provided, the shaft 2 does not advance in the outer cylinder until the outer cylinder 1 is completely driven. Therefore, the anchor member 4 projects from the outer cylinder only after the outer cylinder 1 is hit, and the periphery of the driving layer is not undesirably destroyed.

Here, when the shaft 2 comes out of the outer cylinder 1 during handling of the adhesive 3 or when a force in the opposite direction acts on the shaft 2 due to the elastic restoring force of the anchor member 4 during the driving of the shaft 2, Resist this.

FIG. 5 shows another embodiment. The hole 1c of the outer cylinder is cut out on the upper side and bent inward to form a guide piece 1e, on which the lower end of the anchor member 4 is supported.

FIG. 6 shows another embodiment. A cylindrical guide member 5 is provided inside the lower portion of the outer cylinder 1 and between the pointed portion 1d and the hole 1c. The upper end of the guide member 5 is a flat surface that is substantially perpendicular to the axial direction of the outer cylinder 1. In this case, as shown in FIG. 6, the lower lower surface of the anchor member 4 receives a reaction force by the upper surface of the guide member 5 and is strongly pressed against the corner portion 5a of the upper peripheral edge of the guide member 5, so that the tip end of the anchor member 4 is pushed. Bends upwards. With the subsequent hammering, the upper surface of the portion where the anchor member 4 passes through the outer cylindrical hole 1c is also strongly pressed against the corner angle 1f of the outer cylindrical hole 1c. As a result, the anchor member exits from the outer cylinder in a state where it is strongly sandwiched between the upper and lower surfaces in the portion passing through the outer cylinder hole 1c, so that the anchor member is "squeezed" and bends in an upward arc shape. I will do it.

FIG. 7 shows still another embodiment. The lower end of the guide member 5 is a cusp and is replaced with the outer cylinder cusp 1d. That is, the guide member 51 is the cylindrical body 1 of the outer cylinder 1.
At the lower end of the cylindrical portion 51a that is concentric with a
b is integrally formed, and the upper end is a flat surface. A circular groove 51c is provided on the outer circumference of the columnar portion 51a, and the bent piece 1g at the lower end of the outer cylinder 1 is fitted into the circular groove 51c by caulking.

Further, as shown in FIG. 8, the outer cylinder 1 is formed so as to have a plurality of concavo-convex stripes along the axial direction, and the fixing force increases. In this case, if the anchor member 4 is interposed between the ridges facing each other and the holes 1c are provided in these portions, the anchor member 4
The positioning with respect to the hole 1c becomes easy and reliable. Also,
In this case, the adhesive 3 can be omitted if the outer diameter of the shaft 2 is made slightly thicker to cause a "tightening margin". Further, even when the outer cylinder 1 has a rectangular (square) cross section as shown in FIG. 9, the adhesive 3 can be omitted by increasing the thickness of the shaft 2 to make a tight margin.

The anchor member 4 is replaced by the anchor member shown in FIGS.
As shown in FIG. 1, a l-shaped (lowercase alphabetic character) letter wire is bent outward at both ends, or
As shown in Nos. 2 and 13, a strip thin plate piece is cut along the length direction from the lower side to the front side and bent into a human-character shape (or a letter-shape). Alternatively, a J-shaped wire (not shown) may be used, and this wire may come out from one hole of the outer cylinder.

A usual material for nails is used as the anchor member. Also, if you use spring material such as stainless spring steel,
Since it is rich in elasticity, even if the positional relationship between the outer cylinder 1 and the anchor member is displaced due to an earthquake or the like, the original state is restored and the fixing strength is strong.

Alternatively, or together with the above, if a plurality of grooves 6d (shown in phantom in FIG. 1) along the axial direction are provided on the outer peripheral surface of the spacer cylinder 6, this portion will also be destroyed.

When the spacer cylinder 6 is not provided, the adhesive force of the adhesive 3 is increased. As a result, until the outer cylinder 1 is driven in, the outer cylinder 1 is driven integrally with the shaft 2, after which the adhesive 3 is unfixed and the shaft 2 is driven into the outer cylinder 1. Further, as shown in FIG. 14, instead of the adhesive 3, a plurality of convex portions 3 are provided on the outer periphery of the columnar main body 2a at equal intervals in the circumferential direction, and this is a "tightening allowance (interlocking) "), And both are integrated until the outer cylinder 1 is driven in. Instead of the convex portion 3, an axial convex strip is arranged and provided in the circumferential direction. Further, these convex portions or ridges may be pressed (or hit) from the outer side of the outer cylinder 1 to be projected and molded on the inner side of the outer cylinder 1. Alternatively, FIG.
5, a circumferential groove 2c may be provided on the outer circumference of the shaft 2 and the ring packing 9 may be fitted therein. These modifications are applied even if the spacer cylinder 6 is provided, but the adhesive force between the outer cylinder and the shaft is set to a small value so that the shaft does not come out.

FIG. 16 shows another embodiment of the shaft. The shaft has no head, and the sealing material layer 8 is applied to the upper part of the shaft. In this case, after driving the shaft 2 into the outer cylinder 1, the sealing material layer 8
Prevent rainwater from entering.

The present invention can be applied to an extremely wide range of applications such as nails, drawing hooks, tatami hooks, and other member fixing tools.
In addition to the above, the material of the driven member is applied to wood wool cement board, wood, tatami mat and the like.

The present invention is not limited to the examples and embodiments described above, but includes various modifications without departing from the spirit and scope of the claims.

[0031]

According to the structure of the present invention, since the rod-shaped anchor member projects in the length direction from the tip of the rod from the side surface near the tip of the outer cylinder, the anchor member smoothly penetrates without breaking the layer. To do. Therefore, the stability of the base of the fixture is also good. In addition, since the tip of the fixing tool can be formed into a pointed shape, it is easy to drive and the layer is not broken undesirably. Moreover, since the thickness is determined by the outer cylinder and the shaft or the outer cylinder and the anchor member, the thickness can be made thinner than the conventional one, and it is easy to drive and the waterproof around the driven nail is also easy. Moreover, the pull-out proof strength can be freely designed by selecting the thickness, material strength and length of the anchor member.

Also, because of the spacer cylinder, the shaft does not advance in the outer cylinder until the outer cylinder is driven almost completely. Therefore, it is possible to prevent the anchor member from protruding from the outer cylinder after the outer cylinder has been almost completely driven in, and undesirably breaking the periphery of the driving layer.

Further, the shaft is held by the positioning recess of the shaft end face so that the axis of the shaft and the anchor member substantially coincide with each other, and the anchor member smoothly goes out of the outer cylinder.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a vertical sectional view of FIG.

FIG. 3 is an end view taken along the line III-III in FIG.

FIG. 4 is a sectional view showing a state of use.

FIG. 5 is a second embodiment of the lower portion of the outer cylinder.

FIG. 6 is a third embodiment of the lower portion of the outer cylinder.

FIG. 7 is a fourth embodiment of the lower portion of the outer cylinder.

FIG. 8 is another embodiment of the outer cylinder.

FIG. 9 is another embodiment of the outer cylinder.

FIG. 10 is a front view of a second embodiment of the anchor member.

11 is a left side view of FIG.

FIG. 12 is a front view of a third embodiment of the anchor member.

13 is a right side view of FIG.

FIG. 14 is a view showing another embodiment of a temporary fixing portion between the outer cylinder and the shaft.

FIG. 15 is a view showing another embodiment of a temporary fixing portion between the outer cylinder and the shaft.

FIG. 16 is another embodiment of the upper part of the shaft.

[Explanation of symbols]

1 ... Outer cylinder 1a ... Cylinder body 1b ... Flange 1c ... Hole
1d ... Point 2 ... Shaft 2a ... Main body 2b ... Head 3 ... Adhesive 4 ... Anchor member 4a ... End 5 ... Guide member 6 ... Spacer 8 ... Seal material layer

Claims (2)

[Claims] 1. An outer cylinder having a flange at one end of the cylinder body and a hole near the other end, a pointed portion integrally bent or fixed to the other end of the outer cylinder, and one end of the outer cylinder. A shaft having a head at one end, the rod-shaped anchor member interposed between the other end of the shaft and the pointed portion, and the other end facing the hole of the outer cylinder; and the outer cylinder flange. A member fixing tool comprising: a detachable spacer cylinder interposed between the shaft head and a positioning recess on an end surface of the shaft on the anchor member side. 2. An outer cylinder having a flange at one end of the cylinder body and having a hole near the other end, a pointed portion integrally bent or fixed to the other end of the outer cylinder, and one end of the outer cylinder. And a shaft having a convex portion provided on the outer peripheral surface to prevent the outer cylinder from slipping off when tightened with the inner surface, and is interposed between the other end of the shaft and the pointed portion, and the other end A rod-shaped anchor member facing the hole of the outer cylinder, wherein a positioning recess is formed in an end surface of the shaft on the anchor member side.