JPH0121650Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] A pair of scissors constituent members each having a blade part and a handle part,
This invention relates to hairdressing scissors connected with bolts and nuts so that they can swing relative to each other.

[Conventional technology]

Since the above-mentioned hairdressing scissors are used for delicate hair, etc., they are not just a pair of scissor components connected by caulking with a connecting device such as a rivet, as is the case with general cutting scissors. A spring that presses and biases the other scissors component against the other scissors component, and a means for appropriately adjusting the biasing force of the spring so that the scissors can be opened and closed easily with the hands and fingers are required. In other words, the pair of scissor components are
During the closing operation of the blade, the edges of the pair of blades slide against each other in sequence from the proximal end of the blade to the distal end of the blade. An operating force is applied in the direction of separating the blades from each other, and the operating force is released by opening the blade portions. For this reason, conventionally, regardless of the opening operation of the blade, a spring is used to bias the pair of scissors components in a direction toward each other so that the pair of scissors components do not wobble when the blade is in the open state. A spring washer is used, and a bolt/nut that can change the biasing force of the spring is used to connect the scissors constituent members.

[Problem that the invention attempts to solve]

In the connection structure using bolts/nuts and spring washers as described above, one side of one scissor component has a
Since the spring washer and nut will be located,
The protrusions on one side of the one scissors component were too large and tended to cause hair to become entangled or caught. In addition, the connector has a large number of component parts, which requires a lot of effort to assemble and disassemble, and it is easy to lose the connector.

The present invention avoids the coupling tool from protruding significantly from one side of the scissors component as much as possible to obtain a structure that is easy to use, and also reduces the number of component parts of the coupling tool to simplify assembly and disassembly work. The purpose is to provide hairdressing scissors that can also be used for hairdressing.

[Means for solving problems]

To achieve the above object, the feature of the present invention is to provide a hairdressing scissors in which a pair of scissors components each having a blade part and a handle part are connected to each other by a bolt and a nut so as to be able to swing relative to each other. , a spring is provided that biases the pair of scissor constituent members in a direction in which they are brought into pressure contact with each other, and the nut and the spring are integrally molded from resin, and the spring is larger than the outer diameter of the nut. The nut is also formed in the shape of a large diameter plate and attached to the outer peripheral surface of the nut.

[Effect]

The effects of adopting the above configuration are as follows.

(i) By making the nut and spring made of resin, it becomes possible to manufacture, assemble, and remove them all at once as an integrally molded product.

(ii) Since the spring is formed into a large-diameter dish shape and is installed on the outer peripheral surface of the nut, the thickness of the spring itself in the bolt axis direction is not added to the thickness of the nut, and therefore, Due to the presence of the spring, the nut does not protrude significantly outward from one side of the scissor component in the bolt axial direction.

(iii) Since the spring is dish-shaped and in contact with one side of the scissors component, the shape of the spring makes it easy to prevent hair from getting into the gap between the nut and the scissors component.

[Effect of idea]

(b) Due to the effect of (i) above, the nut and spring can be manufactured, assembled, and removed all at once, which reduces the labor required to manufacture them compared to the past when they were separate items, and eliminates rattling. This has the effect that hairdressing scissors that can be cut smoothly can be provided at a low cost, and that polishing work can be done efficiently in terms of disassembly and assembly.

(b) Due to the effect of (ii) above, it is possible to create a structure in which the amount of protrusion of the nut and spring as the connector components to one side of the scissor component is suppressed as much as possible, which prevents hair from getting entangled or caught. It has the advantage of being easy to avoid.

(c) By synergistically combining the effects of (ii) and (iii) above, it is possible to obtain hairdressing scissors that are easier to use and can even more easily avoid hair entanglement.

[Example] As shown in FIG. 1, a scissors component 1 includes a blade part 1a and a handle part 1b integrally molded, and an elastic stopper 2 for setting the closing limit, and a blade part 3a integrally molded. and a scissors component 3 including a handle portion 3b
are connected to each other by a bolt 4 and a hexagonal nut 5 made of resin so as to be able to freely swing relative to each other to form hairdressing scissors.

As shown in FIG. 2, the pair of scissors constituent members 1 and 3 have blade parts 1a and 3a connected to each other by means of a coupling device comprising a bolt 4, a nut 5, and a spring 6 provided on the nut 5. They are connected so that they can be opened and closed.

The nut 5 and the spring 6 are integrally molded from resin, and the spring 6, which is formed into a disk shape with a dish-shaped cross section, is located on the outer peripheral surface of the nut 5, and is attached to the pair of scissors. It is configured to bias the structural members 1 and 3 in a direction that brings them into pressure contact with each other. That is, when the blade parts 1a, 3a are closed, the edges of the pair of blade parts 1a, 3a are securely slid against each other in sequence from the proximal end of the blade to the distal end of the blade. The spring 6 is used to prevent the pair of scissors constituent members 1 and 3 from becoming loose when the blade parts 1a and 3a are in the open state, regardless of the warpage in the longitudinal direction and outward expansion of the blade parts.
They are configured so that they are pressed together by.

In the figure, the solid line in FIG. 2 indicates a pair of scissor components 1 and 3
shows a partial cross section near the connector in a substantially closed state, and the imaginary line in the figure shows a state in which the pair of scissors constituent members 1 and 3 are opened.

Incidentally, the recess 7 shown in FIG. 2 is for inserting and engaging the end of the nut 5 to prevent the nut 5 from rotating.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the entire hairdressing scissors, and FIG. 2 is a sectional view of the connection portion of the scissors' constituent members. 1, 3... Scissors component, 1a, 3a... Blade part,
1b, 3b...handle portion, 4...bolt, 5...nut, 6...spring.

Claims (1)

[Scope of utility model registration request] A hairdressing scissors in which a pair of scissor constituent members 1 and 3 each having a blade part 1a, 3a and a handle part 1b, 3b are connected to each other by a bolt 4 and a nut 5 so as to be able to freely swing relative to each other,
The nut 5 is provided with a spring 6 that biases the pair of scissors constituent members 1 and 3 in a direction in which they are brought into pressure contact with each other, and the nut 5 and the spring 6 are made of an integrally molded resin product, and , the hairdressing scissors in which the spring 6 is formed into a dish shape having a larger diameter than the outer diameter of the nut 5 and is attached to the outer peripheral surface of the nut 5.