JPH0453997Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a chisel set, and more specifically to a chisel set that can selectively attach and detach a plurality of types of replaceable blades.

[Prior Art] There are various types of chisel blades, such as round and square shapes, each of which is constructed as an independent blade equipped with a handle. Several sets of these are then supplied to the market.

[Problem that the invention aims to solve] Since each of the conventional chisel blades described above has a handle, when a set of multiple chisels is used, the number of handles increases the size, and the container to store them is also large. There was a problem that it turned into something.

Therefore, the problem of the present invention is to reduce the number of handles to one and provide a chisel set that can be made compact as a whole.

[Means for Solving the Problems] In order to achieve the above-mentioned object, in the present invention, the blades of various chisels are separately attached to plastic necks, and each neck is attached to one handle. , adopted a structure that can be attached and detached freely.

[Function] With the above structure, multiple types of blades and one handle can be selectively connected, so the chisel set can be made extremely compact.

In addition, since only one chisel is used at a time, the chisel can be used simply by selecting the desired blade and fitting its neck and handle.

Even when replacing the blade with another blade, the neck and handle can be easily replaced by attaching and detaching.

[Example] Hereinafter, the present invention will be described in detail based on the example shown in the drawings.

FIG. 1 and subsequent figures illustrate one embodiment of the present invention, and the chisel set of the present invention is composed of a plurality of types of blades 1 and 2 of different shapes and one handle 3.

The blades 1 and 2 each have a neck portion 4 having the same shape.
It is integrated with.

The neck portion 4 is molded from plastic, and a pair of protrusions 5, 5 are protruded in parallel from the rear end thereof.

The inner sides of these protrusions 5, 5 are flat,
Its tip is arcuate.

Furthermore, a stepped portion 6 is formed between the bases of the protrusions 5, 5 and sandwiched between the protrusions 5, 5.

This stepped portion 6 is lowered by a predetermined depth from the width direction of the protruding pieces 5, 5, and is integrated with the tip side of the neck portion 4 and the inner surface of each protruding piece 5, 5.

Grooves 7 having a quadrilateral cross section are formed at predetermined positions on the upper and lower surfaces of the stepped portion 6, crossing the stepped portion.

The shapes of the necks 4 are all the same.

A concavo-convex strip 8 is formed on the outer surface of each of the protrusions 5, 5, located approximately in the center of the neck portion 4 in the longitudinal direction.

The purpose of these uneven stripes 8 is to prevent fingertips from slipping when attaching and detaching the neck portion 4 to and from the handle 3, which will be described later.

On the other hand, the handle 3 is elongated and made of plastic, and has an oval cross section for easy grip.

A pair of protrusions 9, 9 having the same shape, length, and width as the protrusions 5, 5 of the neck portion 4 are formed at the tip of the handle 3. Projecting pieces 5, 5
The spacing between the protrusions 9 and the protrusions 9 is equal.

The inner surfaces of these protrusions 9, 9 are flat, and a protrusion 10 having an arc-shaped cross section is formed in the middle thereof to fit into the groove 7 of the stepped portion 6 of the neck portion 4. There is.

Further, a stepped portion 11 is formed between the protruding pieces 9, 9 so as to protrude halfway from the base side of the handle 3.

The step portion 11 is formed one step lower than the width direction of the projecting pieces 9, 9.

The length of each stepped portion 6, 11 is such that when the neck portion 4 is attached to the handle 3, the tips thereof do not come into contact with each other. That is, the stepped portions 6, 11
The length of is shorter than the protrusions 5 and 9.

This stepped portion 11 is also integrated with the base side of the handle and the inner surfaces of the projecting pieces 9, 9.

Further, the protrusions 5, 5 and 9, 9 have the same length, and the tips on the protrusions 9, 9 side are also rounded.

The method of use is as follows.

That is, the rear end of the neck 4 and the tip of the handle 3 have complementary shapes, and the protrusions 5, 5 and 9, 9
When the two are rotated 90 degrees in the circumferential direction, the protrusions 5, 5 on one side and the protrusions 9, 9 on the other side are fitted between the other sides, and the protrusion 10 is fitted into the groove 7. The neck portion 4 is temporarily fixed to the handle 3, and the blade 1 or 2 can be selectively used as a chisel.

If you want to replace the blade, put your fingertip on the uneven strip 8 and push it strongly forward, the protrusions 9 will be elastically deformed so as to spread outward, and the protrusions 10
Since the neck part 4 escapes from the groove 7, the neck part 4 is separated from the handle 3 and can be easily removed and replaced with another one.

[Effects of the invention] Since the chisel set according to the invention is constructed as described above, it has the following effects.

1 neck of the same shape with different blades
Since it has a structure that allows it to be attached and detached from the handle of the book, the chisel set can be packed extremely compactly and does not take up much space when carried or stored.

Moreover, since there is only one handle, it can be provided at a correspondingly low cost.

[Brief explanation of the drawing]

Figure 1 and the following diagrams illustrate one embodiment of the present invention. Figure 1 is a plan view, Figure 2 is a side view, Figure 3 is a sectional view taken along line A--A in Figure 1, and Figure 4 is a cross-sectional view taken along line A--A in Figure 1. B- in Figure 2
B-line sectional view, Figure 5 is a partially enlarged view of Figure 4, Figure 6 is a partially enlarged view of Figure 4.
7 and 7 are perspective views of the blade, and FIG. 8 is a perspective view of the handle. 1, 2...Blade, 3...Handle, 4...Neck, 5,9
... protrusion, 6, 11 ... step, 7 ... groove, 8 ...
Concave and convex stripes, 10... Protruding stripes.

Claims (1)

[Scope of utility model registration request] It consists of a plurality of neck parts 4 of the same shape to which blades 1 and 2 of different shapes are fixed, and a handle 3 to which these neck parts 4 are detachably attached.The neck part 4 has a pair of right and left protrusions at its rear end. It has a groove 7 that is integrated with the pieces 5, 5, the neck portion 4 and the inner surfaces of the protruding pieces 5, 5, extends halfway through the protruding pieces 5, 5, and runs across the upper and lower surfaces thereof. The handle 3 has a pair of left and right protrusions 9, 9 at its distal end, and is integrated with the handle 3 and the inner surfaces of the protrusions 9, 9. 9, and a lower step 11 extending halfway between the protrusions 5, 5 and 9, 9.
The widths of the protrusions 9 and 9 are equal, and a protrusion 10 that fits into the groove 7 is formed on the inner surface of the protrusions 9 and 9, and each step 6 and 11 is shorter than the amount of protrusion of the protrusions 5 and 9, A chisel set characterized in that the lengths of the protrusions 5 and 9 are equal.