JPS5927894Y2 - Scissors made of non-magnetic material - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to scissors made of non-magnetic material.

Generally, most scissors are made of metal, but recently scissors made of non-magnetic materials have been provided.

The reason for this is that metal scissors are not suitable for cutting tape in, for example, magnetic tape collection work.

In other words, if metal scissors are used, there is a risk of destabilizing the state of magnetic recording on the magnetic tape, so scissors made of non-magnetic material such as hard ceramic are required. It became.

However, even with this type of special scissors currently available on the market, the fulcrum pin that connects the front blade body is a metal pin, and the scissors that are entirely made of non-magnetic material are It doesn't exist yet.

The present invention aims to provide scissors which are required to be made of non-magnetic material, and which strictly satisfies the requirements, and which furthermore has a new pin that makes the combination of the pair of front blade bodies even more solid. The specific structure of the scissors is that a pair of front blade bodies are made of non-magnetic material and are combined together so that they can rotate freely around a fulcrum, and the pin that makes up the fulcrum is made of a non-magnetic plastic material. These scissors are completely non-magnetic.

The present invention will be explained in detail below based on the illustrated embodiments.

Reference numeral 1 indicates the scissors of the present invention, and these scissors are illustrated as intermediate fulcrum type scissors as an example.

Of course, the invention is not limited to such intermediate fulcrum type scissors, but can also be applied to rear end fulcrum type scissors.

Reference numeral 2 denotes a front blade body which is one of the main members constituting the scissors 1.

In this embodiment, the front blade main body is made up of pieces of the same shape that are rotatably assembled around a fulcrum, with the working end serving as the blade 3 and the proximal side serving as the grip portion 4.

Incidentally, in this embodiment, most parts of the front blade main body 2 are made of plastic material, and the part of the blade 3 is made of hard ceramic.

Of course, the entire front blade body 2 may be made of hard ceramic, which is a non-magnetic material.

Next, the structure of the fulcrum that rotatably connects the pair of front blade bodies 2 will be explained.

In this specification, the pivot point is defined as a fulcrum, and the member specifically applied here is defined as the pin 5.

The pin 5 is made up of two parts, one of which is a shaft 6 and the other a bearing 7, as shown in FIG.

Both of these are constructed using a hard plastic material such as polyacetal.

First, the shaft body 6 has a cylindrical shaft portion 8 and a flange 9 formed at one end thereof.The shaft portion 8 has a tapered shaft 8a having a diameter smaller than that of the shaft portion 8, and a tapered shaft 8a at the tip thereof. Constricted small diameter part 1
A head 11 having a slightly larger diameter than that of the head 11 is formed.

On the other hand, the bearing body 7 integrally connected to the shaft body has a flange 7b at one end of a bearing tube 7a having the same diameter as the shaft portion 8,
A tapered bearing hole 12 and a head receiving hole 13 are bored in communication with each other.

Therefore, the pair of front blade bodies 2 are overlapped and matched through holes 2a.
Insert the shaft part 8 into one side, insert the bearing cylinder 7a into the other side, fit the head part 11 into the tapered bearing hole 12, and press-fit the two parts, so that the head part 11 is connected to the bearing hole 12. The tapered shaft 8a passes through the protruding portion 14 formed at the boundary with the receiving hole 13 while expanding and fits into the head receiving hole 13, and the tapered shaft 8a is crimped into the tapered bearing hole 12, and the shaft portion 8 and The bearing tube 7a is integrally connected to form a pin 5, and the pair of front blade bodies 2 are pivotally connected by this pin 5.

As described above, since the entire member of the scissors made of a non-magnetic material according to the present invention is made of a non-magnetic material, it is possible to obtain scissors that are particularly suitable for special uses such as editing work on magnetic tapes where the influence of magnetic force is averse. It is something.

In addition, since the shaft and lid of the pin that constitutes the fulcrum are integrated by press-fitting, assembly of the front blade body is extremely easy.Also, the pin is made of plastic, and from the viewpoint of its construction, the flange is particularly difficult to assemble. Since the diameter can be made large, even if a strong twisting force is applied to the pin part when using scissors, the shaft part and lid part will not separate or loosen, making it unusable. do not have.

Moreover, since the shaft portion and the bearing portion have the same diameter, the pair of front blade bodies have the same pin through hole and can be molded using the same mold.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the scissors of the present invention, Fig. 2 is an exploded perspective view of the same as above, and Fig. 3 is a side view of a pin constituting the fulcrum of the scissors of the present invention, disassembled in the order of A to C. Shows the assembled state. 1; scissors, 2; front blade body, 3; blade, 5; pin, 6;
Shaft body, 7; Bearing body, 7a; Bearing tube, 7b; Flange, 8
: Shaft portion, 8a; Tapered shaft, 9; Flange, 10: Small diameter portion, 11; Head, 12; Bearing hole, 13; Head receiving hole, 14
: Projection.

Claims (1)

[Scope of utility model registration request] In scissors, a pair of front blade bodies made of non-magnetic material are rotatably combined around a fulcrum, and the pin constituting the fulcrum is made of plastic, and the shape is formed by a shaft body and a bearing body connected to this shaft body. , one of the shaft bodies has a flange at one end of the shaft part, and at the other end a large diameter part forms a chipuff shaft with a smaller diameter than the shaft part, and the small diameter end of the tapered shaft has a slightly larger diameter than this. The other bearing body has a flange at one end of the bearing tube having the same outer diameter as the shaft, and a tapered bearing hole and a head receiving hole are connected in the bearing tube, A pair of scissors made of non-magnetic material, characterized in that the tapered shaft of the shaft is press-fitted into the bearing hole, and the head is fitted into the head-receiving hole, thereby integrally connecting the shaft and the bearing sleeve.