JPH081546A - Puller for article fixing tool - Google Patents

Abstract

PURPOSE:To prevent application of bending force to a fixing tool by composing a puller in such a way that an arc-shaped surface of a lever action part and a lower surface of an opening part of a claw body to come in slide contact with each other smoothly to cope with momentary distance change between a support point shaft and a force application point of the lever action part smoothly. CONSTITUTION:A fork part of an action part 13a of a puller claw body 13 is inserted into a head 2b of a protruded shaft 2, and an upper end of an outer cylinder 1 is pressed by a base plate 11 through a disc C. As an operation part 15c of a lever is pushed down forward, the outer cylinder 1 is kept as it is, while the shaft 2 is pulled up strongly. At this time, an arc-shaped surface 15a of the lever action part 15a and a lower surface of an opening part 31d of the claw body 13 come is slide contact with each other smoothly to cope with momentary distance change between a support point shaft 14 and the lever action part 15a smoothly, and bending force to the shaft 2 is not applied. A puller with which a fixing tool such as a nail can be pulled along its length without generating bending force can thus be provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pulling tool for fixing articles such as nails and anchor bolts.

[0002]

2. Description of the Related Art As a conventional nail pulling tool, an L-shaped tip called a burl has been used. This is an application of the lever, but the corner portion of the L shape serves as the fulcrum of the lever, and the place where the nail is sandwiched serves as the point of action.

[0003]

However, since the distance between the fulcrum and the point of action is constant, the nail bends toward the handle of the burl when pulled out.

An object of the present invention is to provide a pulling tool in which the distance between the fulcrum and the working point is automatically moved so that a fixing tool such as a nail is pulled out in the lengthwise direction and bending force is not generated. .

[0005]

In order to solve the above problems, the structure of the present invention is as follows. That is, the first configuration is a rectangular base plate supported by the article fixing surface, and two side plates erected along the opposite long sides of the base plate,
A withdrawal claw body that is slidably guided at a constant distance in a direction orthogonal to the base plate at a front portion between the side plates, and a fulcrum shaft stretched between the side plates behind the withdrawal claw body, The lever is swingably supported by the fulcrum shaft, and the tip of the action portion has a smooth arc-shaped surface, and is in sliding contact with the pull-out claw body, and the operation portion includes a lever elongated rearward.

In the second structure, in addition to the first structure, a longitudinally elongated slit is provided in the front portion of the side plate at an opposed position, and a guide projection slidably fitted in the slit is provided in the pull-out claw body. That is.

The third configuration is, in addition to the first or second configuration,
The pull-out claw body is provided with an opening through which the action portions of the lever are displaceably fitted to each other.

[0008]

The bifurcated portion of the working portion of the pull-out claw body is inserted below the head of the protruding shaft, and the upper end of the outer cylinder is pressed by the base plate through the disc. Then, when the operating portion of the lever is pushed downward, the shaft is strongly pulled upward while the outer cylinder remains as it is. At this time, the arcuate surface of the lever acting portion and the lower surface of the opening portion of the claw body are in smooth sliding contact,
It smoothly responds to changes in the distance between the fulcrum shaft and the point of action of the force of the lever action part, and the force that bends the axis does not work.

[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. In the pulling tool 10 according to the present invention shown in FIGS. 1, 2, 3 and 4, a base plate 11 having a rectangular shape in plan view supported by an article fixing surface (the left and right sides of FIG. 4 are front and rear sides,
Two side plates 12 and 12 are provided upright along the opposing long sides (left and right sides) of which the upper and lower sides are left and right sides. Base plate 1
In the center of the front side of 1, a notch 11a for hooking the head of the fixture
Is provided. The side plate 12 has a short L-shape when viewed from the left and right sides, and is a tie bolt that penetrates both side plates near both ends of the lower piece 12a and the upper portion of the upper piece 12b. Nut 16a
And the spacer tube 16b penetrating it maintains the distance between the two. Further, a longitudinally long slit 12c is provided at a facing position on the front part of the side plate (on the left side in FIG. 2).

In FIGS. 2 and 3, the pull-out claw body 13 is slidably guided at a front portion of the side plates 12 and 12 with respect to the base plate 11 at a predetermined distance in the vertical direction (orthogonal direction).
That is, the rectangular plate-shaped main body 13 is provided above the hook-shaped acting portion 13a.
b is formed, and the guide protrusions 13c at the left and right ends (left and right in FIGS. 2 and 3) are slidably fitted in the slits 12c.
These are integrally formed by press molding from one flat plate. Further, the action portion 1 of the lever 15 described later is provided on the main body 13b.
Vertically elongated rectangular opening 13 in which 5a are fitted displaceably with respect to each other
d is provided. The hook-like action portion 13a has a notch 13e into which the underside of a fixture such as a nail is inserted, and has a forked shape.

A fulcrum shaft 14 made of a bolt extends laterally between the upper piece 12b of the side plate at the rear of the pull-out claw body 13.

A lever 15 is swingably supported by the fulcrum shaft, and an action portion 15a in front of the fulcrum shaft 14 has an arcuate surface 15b having a smooth tip, and engages with an opening 13d of the extracting claw body. However, the operating portion 15c behind the fulcrum shaft 14
Extends long backwards.

An example of an article fixing tool (developed by the present inventor) in which the pulling tool 10 is used is shown in FIGS. The outer cylinder 1 is made of steel and has a reduced diameter portion 1b at the tip (lower end) of the cylindrical body 1a. The shaft 2 is made of steel, and the outer cylinder 1
The rod-shaped main body 2a inserted inside the base has a countersunk head 2b with a driver groove at the end (upper end) and a male screw 2c near the end (lower end).
have. A female screw member 3 is screwed onto the male screw 2c near the tip of the shaft. The female screw member 3 is attached to the steel retaining member 4
Are separately fixed, and a plurality of pointed radiation legs 4b centering on the center of the annular portion are formed from the annular portion 4a toward the distal end.

The case where a waterproof sheet is laid on the surface of the ALC base material and fixed on the roof of a concrete building will be described above. 5 and 6, the first and second base materials A
Spread sheets B1 and B2, and then drill a prepared hole H. In addition, the shaft 2 is inserted into the outer cylinder 1 with the center of the disc C, which is a holding plate, passed through the shaft 2 of the fixture, and the male screw 2c at the tip of the shaft is attached to the female screw member 3 to which the retaining member 4 is fixed. Screw in. At this time, the radial leg portion 4b of the retaining member is in contact with the reduced diameter portion 1b of the outer cylinder in a closed state. Prepared hole H in this state
To insert. At this time, with the upper end of the outer cylinder almost facing the upper surface of the sheet B2, the lower end of the shaft 2 and the bottom of the prepared hole H are spaced by the amount of screwing of the shaft 2.

Next, the bifurcated portion of the working portion 13a of the pull-out pawl 13 is inserted under the protruding shaft head 2b, and the upper end of the outer cylinder 1 is pressed by the base plate 11 via the disc C. . Then, when the lever operation portion 15c is pushed down toward the tip, the shaft 2 is strongly pulled upward while the outer cylinder 1 is left as it is. At this time, the arcuate surface 15b of the lever acting portion 15a and the lower surface of the opening portion 13d of the pawl body 13 are brought into smooth sliding contact, and the engraved distance between the fulcrum shaft 14 and the action point of the force of the lever acting portion 15a. It responds smoothly to changes and no force that bends shaft 2 works.

Further, as shown in FIG. 7, the retaining member 4 is forcibly pushed up, and the radial leg portion 4b is guided by the outer cylindrical reduced diameter portion 1b to radially open obliquely toward the upper end and outward in the radial direction. It is difficult to get into the layer of the base material A. At this time, since the radiating legs enter the underlayer in order from the pointed tip, they pierce the layer without unnecessarily destroying the layer.

Next, when the shaft 2 is screwed in toward the front end, the female screw member 3 is in a fixed state, so that only the shaft 2 advances downward, and the shaft head 2b presses the upper surface of the disk C so that the sheet is seated. Fix B2. Then, the reinforcing disc sheet E is attached to the shaft head 2b with an adhesive so as to cover it.

In addition to the above, the pulling tool of the present invention is for pulling out fixing tools such as ordinary nails and anchor bolts.
Widely used.

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.

[0020]

According to the first structure of the present invention, the fixing tool is pulled out in the lengthwise direction, and the bending force does not work.

With the second structure, in addition to the effects of the first structure,
The sliding guide of the pull-out claw body is reliable, and it can be easily manufactured by pressing.

According to the third structure, in addition to the first or second structure, the extraction claw body can withstand a strong extraction force and can be easily manufactured by press working.

[0023]

[Brief description of drawings]

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

[0024]

FIG. 2 is a front view of an embodiment of the present invention.

[0025]

FIG. 3 is a perspective view of a pull-out claw body.

[0026]

FIG. 4 is a bottom view of FIG.

[0027]

FIG. 5 is an explanatory diagram of a usage state of the present invention.

[0028]

FIG. 6 is a vertical sectional view of FIG.

[0029]

FIG. 7 is a vertical cross-sectional view of a usage state.

[0030]

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Outer cylinder 1a ... Main body 1b ... Reduced diameter part 2 ... Shaft 2a ... Main body 2b ... Head 2c ... Male screw 3 ... Female screw member 4 ... Retaining member 4a ... Annular portion 4b ... Radial leg 10 ... Extractor 11 ... Base plate 11a ... Notch 12 ... Side plate 12c ... Slit 13 ... Extraction claw body 13a ... Working portion 13b ... Main body 13c ... Opening portion 13
d ... Guide protrusion 14 ... Support shaft 15 ... Lever 15a ... Working portion 15b ... Arc surface 15c ... Operating portion 16a ... Tie bolt / nut 16b ... Spacer tube

Claims (3)

[Claims] 1. A rectangular base plate supported by an article fixing surface, two side plates standing upright along opposite long sides of the base plate, and a front portion between the side plates with respect to the base plate. An extraction claw body slidably guided in a perpendicular direction at a constant distance, a fulcrum shaft stretched between the side plates behind the extraction claw body, and swingably supported by the fulcrum shaft. A pulling tool for a fixing tool, characterized in that the tip of the portion has a smooth arcuate surface and is in sliding contact with the pulling-out pawl body, and the operating portion includes a lever extending long backward. 2. A longitudinally elongated slit is provided at a facing position on the front portion of the side plate, and a guide projection slidably fitted in the slit is provided on the pull-out claw body. A pull-out tool for the article fixing tool described. 3. The pull-out tool for a fixture according to claim 1, wherein the pull-out claw body is provided with an opening through which the action portions of the lever are displaceably fitted to each other.