JPH04125862U - scissors - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to easily attach the finger ring to the blade, and it is possible to improve productivity by reducing labor.
Further, since the joint between the blade and the finger ring has a detachment prevention structure, the blade can be prevented from detaching from the finger ring. [Structure] The base end of the blade 1 is inserted into a fitting groove 6 which is open at least on one side and at the tip of the finger ring 7, and the cover piece 5 is fitted and welded. Further, a detachment prevention portion is formed in the fitting groove 6 and the base end of the blade 1 so as to engage with each other in an uneven relationship. When assembling these, the base end of the blade 1 is inserted into the fitting groove 6 formed in the finger ring 7, and the lid piece 5 is fitted into the groove. Then, the fitting groove 6 and the outer periphery of the lid piece 5 are welded.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to scissors.

0002

[Conventional technology]

Conventionally, when attaching a resin finger ring to the blade of scissors, the base end of the blade was placed in a mold. This is done by inserting the ring and pouring resin after mold tightening to form the finger ring in one piece. .

0003

[Problem that the idea aims to solve]

However, when installing the blade as described above, the employee must open the mold and attach the blade. Each time the tip is inserted into the mold, resin is injected, and the scissors are taken out after the resin has cooled. There were some troublesome problems. This idea solves the problems mentioned above. The purpose of this invention is to provide scissors that allow easy attachment of finger rings. .

0004

[Means to solve the problem]

The first idea is to attach the base of the blade to a fitting groove that is open on at least one side and the tip of the finger ring. The gist is that the end is inserted and the lid piece is fitted and welded. The second idea is that the fitting groove and the base end of the blade engage with each other in an uneven relationship to prevent separation. The main point is that a section is formed.

[0005]

[Effect]

The first idea with this structure was that when assembled, the base end of the blade was formed into a finger ring. Insert it into the fitting groove provided, and fit the lid piece into the groove. and the outer periphery of the fitting groove and the lid piece. weld. The second idea is that the fitting groove and the proximal end of the blade engage with each other in a concave and convex relationship. The body is prevented from detaching from the ring.

[0006]

【Example】

A first embodiment embodying the present invention will be described below with reference to FIGS. 1 and 2. A pair of metal blades 1 are supported by an opening/closing central shaft 3 so as to be openable and closable. this A blade part 2 is formed on both blades 1, and a pair of synthetic resin finger rests are provided at each base end. It is attached to ring 7. The details of this finger ring 7 will be explained.

[0007] A fitting groove 6 is formed at the tip of the finger ring 7, and the tip and one side of the fitting groove 6 are It is opened. The base end of the blade 1 is inserted into this fitting groove 6, and the resin The lid piece 5 is fitted. The lid pieces 5 are each ultrasonically welded to the finger rings 7. It is welded by. Also, on both sides of the finger ring 7 facing each other, A pair of sink holes 4 are formed to prevent "sink" that occurs when forming the finger ring 7. Ru.

[0008] Now, to attach the base end of the blade 1 and the finger ring 7, insert the base end of the blade 1 into the fitting groove 6. After that, the lid piece 5 is fitted into the fitting groove 6. After this, the fitting groove 6 and the lid piece 5 are ultrasonically welded. , weld the lid piece 5. Therefore, the base end of the blade 1 is inserted into the mold of an injection molding machine for forming the finger ring 7. This eliminates the need to open and tighten the mold every time it is molded, which saves time and effort. This saves money and improves productivity. Also, regarding the attachment of the blade 1 and the finger ring 7, Unlike adhesives, there is no surface treatment to remove dirt, dust, oil, etc. before bonding. Therefore, the work time is short and there is no surface finishing treatment after the adhesive overflows. Therefore, machining time can be shortened. In addition, the welding strength must also be strong enough. Therefore, the lid piece 5 does not easily come off from the fitting groove 6.

[0009] Next, a second embodiment will be described with reference to FIG. In this embodiment, one side of the base end of the blade 1 has a semicircular notch to prevent detachment. On the other hand, the inner surface of the fitting groove 6a of the finger ring 7 is provided with a separation prevention part. A protrusion 8 is formed. Then, both notches 1a and protrusions 8 engage with each other. In this state, the lid piece 5 is fitted into the fitting groove 6a and welded in the same manner as in the first embodiment. There is.

0010 Therefore, in this embodiment, since the notch 1a and the protrusion 8 are engaged, the blade 1 is placed first. Separation in the end direction is more reliably prevented by the fitting groove 6b. FIG. 4 shows a third embodiment, in which a trapezoidal detachment is formed at the base end of the hollow body 1. A prevention part 1b is formed, and a trapezoidal part as a detachment prevention part is formed in the fitting groove 6b of the finger ring 7. A recess 9 is formed. Then, the separation prevention portion 1b and the trapezoidal recess 9 are engaged with each other. In the fitted state, the lid piece 5 is fitted into the fitting groove 6b and welded in the same manner as in the first embodiment. ing.

[0011] Therefore, the detachment prevention portion 1b and the trapezoidal recess 9 prevent the blade 1 from detaching. Ru. Note that this invention is not limited to the above embodiment, and as shown in FIG. A fitting step 10 is formed on both sides of the tip of the ring 7, and the fitting step 10 is formed in a U-shape. The lid pieces 5a may be fitted together and the outer periphery thereof may be welded.

0012

[Effect of the idea]

As detailed above, according to the first invention, it is easy to attach the finger ring to the blade. It is possible to improve productivity by reducing labor. In addition, in the second and third designs, the joint between the blade and the finger ring has a structure that prevents it from coming off. Therefore, the blade can be prevented from coming off from the finger ring.

[Brief explanation of drawings]

FIG. 1 is a front view of scissors of a first embodiment.

FIG. 2 is a perspective view of the finger ring and the blade (base end).

FIG. 3 is an exploded perspective view of essential parts of the second embodiment.

FIG. 4 is an exploded perspective view of essential parts of the third embodiment.

FIG. 5 is an exploded perspective view of a main part of another embodiment.

[Explanation of symbols]

1 blade, 6 fitting grooves, 7 finger rings, 5 lid pieces

Claims (2)

[Scope of utility model registration request] 1. Scissors characterized in that the proximal end of the blade is inserted into a fitting groove which is open on at least one side and the tip of the finger ring, and a lid piece is fitted and welded to the fitting groove. 2. The scissors according to claim 1, wherein the fitting groove and the base end of the blade are formed with a detachment prevention portion that engages with each other in an uneven relationship.