JPS6022938Y2 - Ritzper - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a ripper used for removing seams, buttons, etc.

Conventionally, this type of ripper has been constructed by inserting and fixing the base of a metal shaft having a bifurcated portion at the tip into a handle made of hard synthetic resin.

With this configuration, it is difficult to attach sharp blades to the fork portions, and if the fork portions and the shaft portion are made of stainless steel, a large amount of stainless steel will be used, resulting in an expensive product.

Furthermore, when the blade becomes dull, it is difficult to sharpen it again, and replacing the blade involves replacing the entire futagun, which cannot be done inexpensively.

This invention was made to solve these problems, and is intended to provide an economical ripper that has good cutting ability and whose blades can be easily replaced.

An embodiment of the ripper according to this invention will be explained based on the drawings.

Reference numeral 1 denotes a ripper main body, which is composed of a handle part 2 and a tip part 3.

3a is the short end of the bifurcated tip 3, and 3b is the long end.

4 is a flat blade plate consisting of a central portion 4a and arcuate blade portions 5, 6 at both ends facing in opposite directions;
Hold and reinforce.

5a5b are a short piece and a long piece of the arcuate blade portion 5, respectively.

Similarly, 6a and 6b are a short piece and a long piece of the arc-shaped blade portion 6, respectively.

7 is a diagonal hole through which the ripper main body 1 is inserted from the short end 3a of the tip 3.
The half of the flat blade plate 4 is provided obliquely inward so that it can be inserted smoothly and without resistance, and the ceiling 7b of the inner part 7a of the oblique hole 7 is parallel to the longitudinal direction of the ripper main body 1.

Reference numeral 8 denotes a longitudinal groove extending from the long end 3b of the tip 3 to the diagonal hole 7, parallel to the longitudinal direction of the ripper main body 1, and so that the flat blade plate 4 can be press-fitted with appropriate resistance. provided.

Arrow A with the long piece 6b of the arbitrary blade part 6 of the flat blade plate 4 facing upward
Insert the flat blade plate 4 into the diagonal hole 7 in the direction shown in FIG.

After the long piece 6b of the blade part 6 comes into contact with the back part 7a of the diagonal hole, the flat blade plate 4 is rotated in the direction of arrow B and press-fitted into the longitudinal groove 8.

The flat blade plate 4 is held in the longitudinal groove 8, and the blade part 6b of the flat blade plate 4 is gripped by the inner ceiling 7b of the diagonal hole, so the blade part 5 is stabilized and the ripper is configured. Ru.

An inexpensive ripper can be provided by integrally molding a ripper main body 1 consisting of a handle part 2 and a tip part 3 from hard synthetic resin, and by making a flat blade plate 4 from stainless steel.

Moreover, the flat blade plate 4 can be easily replaced, and since there are blade parts 5 and 6 at both ends of one flat blade plate 4, a sharp blade can always be used, which is economical and convenient.

Further, as shown in FIG. 7, it is safe and convenient to combine the blade portions into one and insert the blade portion 5 into the diagonal hole 7 when not in use.

As mentioned above, the ripper according to this invention has two long and short pieces 5b.
, 5a, 6b, and 6a are arranged at both ends so as to be opposite to each other, and the central part 4a is formed thickly to constitute the flat blade plate 4. and tip 3
The tip 3 of the ripper main body 1 is formed into a flat shape and bifurcated into two long and short pieces 3b and 3a, and a wide diagonal hole 7 is provided on the short piece 3a side of the tip 3. A narrow longitudinal groove 8 is provided on the long side 3b so as to communicate with the diagonal hole 7, and the inner ceiling 7 of the diagonal hole 7 is provided.
b is formed parallel to the longitudinal direction of the ripper main body 1 to constitute the ripper main body 1, and the central portion 4a of the flat blade plate 4 can be smoothly inserted into the diagonal hole 7 of the ripper main body 1. The central part 4a of the flat blade plate 4 is formed by the longitudinal groove 8 of the main body 1.
It is configured so that the long piece of the flat blade plate 4 inserted while strongly clamping the blade comes into contact with the inner ceiling 7b of the diagonal hole, which has a great practical effect.

[Brief explanation of drawings]

The drawings show one embodiment of the ripper according to this invention, and FIG. 1 is an overall front view, and FIGS. 2 to 4 are detailed cross-sectional views of main parts explaining the procedure for replacing the flat blade plate, respectively. FIG. 5 is a sectional view taken along the line ■--■ in FIG. 2, FIG. 6 is a side view of the flat blade plate, and FIG. 7 is a detailed sectional view of a main part using the flat blade plate of another embodiment. 2...Handle part, 3...Tip part, 4...
...Flat blade plate, 5...Blade portion, 6...Blade portion, 7...Diagonal hole, 8...Longitudinal groove.

Claims (1)

[Scope of utility model registration request] Arc-shaped blade portion 5 consisting of two long and short pieces 5b, 5a, 6b, 6a
, 6 are arranged at both ends in opposite directions, and the central part 4
A is formed thickly to constitute the flat blade plate 4, while the ripper body 1 consists of a handle part 2 and a tip part 3.The tip part 3 of the main body 1 is formed into a flat shape and consists of two long and short pieces 3b and 3a. It is formed into a bifurcated shape, and a wide diagonal hole 7 is provided on the short piece 3a side of the tip portion 3, and a narrow longitudinal groove 8 is provided on the long side 3b so as to communicate with the diagonal hole 7. Directional hole 7
The inner ceiling 7b is formed parallel to the longitudinal direction of the ripper main body 1 to form the ripper main body 1.
a is a long piece of the flat blade plate 4 which can be smoothly inserted into the diagonal hole 7 of the ripper main body 1 and which is inserted while firmly clamping the central part 4a of the flat blade plate 4 by the longitudinal groove 8 of the ripper main body 1; The ripper 0 is configured such that it abuts against the inner ceiling 7b of the diagonal hole.