JP2001136801A - Fitting socket for grip for manual operation tool and method for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a fitting socket for a grip for a manual operation tool in which each side of opposing sides can be fixed equivalently to welding in formation of the fitting socket and yet the fixation can be simply carried out and to provide a method for producing the fitting socket. SOLUTION: This fitting socket for a grip for a manual operation tool is obtained by processing a laminar body into a cylindrical shape and forming the cylindrical shape into a socket shape. The fitting socket for the grip for the manual operation tool is characterized in that a part or the whole area of each side of opposing sides to be brought into contact with each other when the laminar body is formed into the cylindrical shape is provided with connection parts which are connected in the radial direction and not separated in the periphery direction and mutually connected. This method for producing the fitting socket for the grip for the manual operation tool is characterized in that the mutual connection parts are connected in forming the laminar body into a cylindrical shape and press processing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to, for example,
The present invention relates to a socket (receptacle) for attaching a handle to a tool main body of a hand tool, that is, a socket for attaching a handle for a hand tool, and a method of manufacturing the same in a hand tool having a handle for earthwork, a vegetable garden, a flower bed, and the like. .

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 1, the above-described handle mounting socket for a manual working tool is formed in a cylindrical shape having a tapered inner hole made of a metal plate. The mounting socket 1 has a tool body 2 formed of a metal such as Reiki welded to the tip side, and a wooden handle tapered to the opening side corresponding to the taper of the inner hole of the mounting socket 1. 3 is press-fitted and fixed by a wedge effect, and the mounting socket 1 and the handle 3 are connected by a nail (not shown) to form a hand tool 4.

As described above, the handle 3
Is attached to the mounting socket 1. The mounting socket 1 is formed by rounding a plate-shaped body into a cylindrical shape and pressing it to form a socket shape. 5 'remains cracked.

[0003] For this reason, when the hand working tool 4 is used,
A work load acts to open the opposing sides 5 and 5 'and fix them with nails. However, since the fixing of the handle 3 is loosened, there is a problem in that the work is difficult.

Therefore, as shown in FIG. 2, the cracks on the opposite sides 5, 5 'of the mounting socket 1 are welded 6 by welding and fixed so as not to be opened by a work load.
However, when welding 6 is performed in this way, since the welding operation takes time and effort, there is a problem in that the price of the manual operation tool 4 rises.

Accordingly, the present invention is directed to a handle mounting socket for a hand-operated tool, in which the opposing sides 5, 5 'can be fixed in a manner equivalent to welding without welding as described above. And a method for producing the same.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a mounting socket for a handle for a hand tool, which is formed by processing a plate-like body into a cylindrical shape to form a socket shape, wherein the plate-like body is formed into a cylindrical shape. It is a hand tool handle mounting socket in which an engaging portion that engages in the radial direction and does not detach in the circumferential direction is formed and engaged with a part or the entire area of the opposing sides that are in contact with each other. And

Further, the present invention relates to a method for manufacturing a socket for attaching a handle for a hand-operated tool, in which a plate is rounded into a cylinder and press-formed to form a socket, wherein the plate is formed into a tube. When a part or the whole area of each of the opposing sides that come into contact with each other is formed with an engaging part that engages in the radial direction and does not disengage in the circumferential direction, the engaging part engages with each other at the time of rounding press processing, and the socket is formed. A method for manufacturing a socket for attaching a handle for a hand tool formed into a shape.

[0008]

According to the handle mounting socket for a hand tool of the present invention, when the plate-like body is formed in a cylindrical shape, it is radially engaged with a part or all of the opposing sides which are in contact with each other. Since the engaging portions that do not separate in the circumferential direction are formed and engaged with each other, each side is firmly fixed in the circumferential direction, and even if a work load is applied to the mounting socket during manual work, the handle is attached. Never loosen. In addition, since the engagement of the engagement portions is performed by engaging the mutual engagement portions in the radial direction during the rounding press working of the socket, a special processing step for fixing is not required and is simple.

[0009]

An embodiment of the present invention will be described with reference to the drawings.

FIG. 3 shows a mounting socket for a handle according to the present invention. The socket 10 is formed by a plate-shaped metal plate into a cylindrical shape having a tapered inner hole 12 and the metal plate is rounded and pressed. A plurality of trapezoidal locking pieces 14, 14 ′ having opposite tapered sides on both sides thereof are provided on the entire area of the opposing sides 13, 13 ′ that are in contact with each other when formed into a cylindrical shape.
The locking pieces 14, 13 'of 3, 13' are formed continuously at intervals at which they engage with each other. In addition, the locking pieces 14 and 14 ′ may be partially or not entirely over the sides 13 and 13 ′. For example, when a relatively thick metal plate is used, a plurality of metal plates may be formed on the side of the socket into which the handle is inserted.

The locking pieces 14 and 14 'of the sides 13 and 13' are engaged with each other in the radial direction of the cylinder, and both sides of the locking pieces 14 and 14 'are tapered in the circumferential direction. And is fixed without detaching.

The mounting socket 1 of the handle configured as described above.
Reference numeral 0 denotes, as shown in FIG. 1, the tool body 1 is welded to the tip end side by welding, the handle 3 is pressed into the inner hole 12, and the handle 3 is fixed using a peg (not shown). By doing so, a hand tool is configured.

As another means for fixing the handle 3, one locking piece 14a (see FIG. 3) located at a middle portion in the length direction of each of the opposed sides 13, 13 'is provided as shown in FIG. Alternatively, it can be fixed by bending it inward and cutting it into the handle 3.

According to the handle mounting socket 10 for a hand tool configured as described above, the engaging pieces 14, 14 'formed on the entire area of the opposing sides 13, 13 mutually engage to each other in the circumferential direction. It is firmly fixed without detaching, and even if a work load acts on the mounting socket 10 during manual work, the mounting of the handle 3 is not loosened.

Next, a method of manufacturing the mounting socket 10 will be described. As shown in FIG. 5, when a flat (plate-shaped) metal plate 20 having a predetermined thickness is rounded and pressed, a cylindrical shape having a predetermined taper is obtained, that is, the whole is slightly fan-shaped. Further, a plurality of trapezoidal locking pieces 14 and 14 ′ having opposite tapered sides on opposite sides 13 and 13 ′ of the cylindrical shape are provided on the sides corresponding to the opposite sides 13 and 13 ′.係 止 locking pieces 14, 14 '
Are formed continuously at intervals that engage with each other, and a flat plate is punched by press punching.

In order to form this into a cylindrical shape, as shown in FIG. 6, a fixed mold 21 having a semicircular concave surface and a movable mold having a semicircular convex surface corresponding to the concave surface are formed. 22, the center of the metal plate 20, that is,
The central portion where the opposing sides 13, 13 'are disposed on the left and right is pressed into a concave shape.

Next, as shown in FIG. 7, one side 13 '(right side in the figure) of the metal plate 20 curved in a U-shape.
Bend inward. This bending is performed in the next rounding and pressing step so that the locking pieces 14 and 14 ′ formed on the left and right opposing sides 13 and 13 ′ are engaged in the radial direction without abutting in the circumferential direction. The bending process itself may be performed manually or may be performed by pressing.

Next, as shown in FIG. 8, a fixed die 23 having a semicircular concave surface, a movable die 24 having a semicircular concave surface for performing a rounding press process, and
The core 25 is housed inside the metal plate 20 curved in a U-shape by the press die with the core 25, and the core 25 is put into the fixed mold 23, and the press is rounded by the movable mold 24. As shown in FIG. 9, one side 13 '(right side in the figure) of the metal plate 20 curved in a U-shape is bent inward, so that the other side 13 (left side in the figure) Abuts the core 25 before the other side, and then the other side 13 (the left side in the figure)
Are overlapped from the outside in the radial direction and are rounded and pressed, so that the mutually engaging pieces 14 and 14 of the opposing sides 13 and 13 ′ are formed.
Are engaged with each other, and the opposing sides 13, 13 'are fixed at the same time as the round press work.

Since the mutually engaging pieces 14 and 14 'of the opposing sides 13 and 13' are mutually engaged and fixed when the mounting socket 10 is rounded and pressed, a special fixing for fixing is performed. No processing is required and it is simple.

In the above embodiment, the locking piece 1
The shape of each of the locking pieces 14 and 14 'may be square as shown in FIG. 10, or one of the locking pieces 14 may be round as shown in FIG. The shape may be any shape that engages in the radial direction of the cylinder forming the mounting socket 10 and does not separate in the circumferential direction.

In correspondence between the configuration of the present invention and the above-described embodiment, the engaging portion of the present invention is
Although corresponding to 14 ', the present invention is not limited to only the configuration of the embodiment, including other configurations.

[Brief description of the drawings]

FIG. 1 is a perspective view of a conventional socket for mounting a handle for a hand tool.

FIG. 2 is a perspective view of another conventional handle mounting socket.

FIG. 3 is a perspective view of a handle mounting socket.

FIG. 4 is a sectional view of a handle mounting socket.

FIG. 5 is a development view of a handle mounting socket.

FIG. 6 is an explanatory view showing a first step of press working.

FIG. 7 is a cross-sectional view of a mounting socket of a handle during processing.

FIG. 8 is an explanatory view showing a second step of press working.

FIG. 9 is an explanatory view showing a third step of press working.

FIG. 10 is an explanatory plan view showing another example of the locking piece.

FIG. 11 is an explanatory plan view showing still another example of the locking piece.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Mounting socket 13, 13 '... Side 14, 14' ... Locking piece 20 ... Metal plate 21, 23 ... Fixed type 22, 24 ... Movable type 25 ... Core

Claims (2)

[Claims] 1. A mounting socket for a handle for a hand tool, wherein a plate-shaped body is formed into a cylindrical shape by processing the plate-shaped body into a socket shape, wherein a part of each of opposed sides which come into contact when the plate-shaped body is formed into a cylindrical shape. Alternatively, a mounting socket for a handle for a hand tool, in which an engaging portion that engages in the radial direction and does not detach in the circumferential direction is formed and engaged with each other in the entire region. 2. A method for manufacturing a socket for attaching a handle for a hand tool, wherein a plate-shaped body is rounded into a cylindrical shape and press-formed to form a socket shape. A part or the whole area of each side is formed with an engaging part which is engaged in the radial direction and is not detached in the circumferential direction, and is formed into a socket shape by engaging the engaging parts at the time of rounding press working. Method of manufacturing handle mounting socket for hand tools.