JPS63216Y2 - - Google Patents

Description

[Detailed description of the invention] Technical field This invention forms a press-contact part near the shaft attachment part on the inner surface of the operation part side of a pair of scissors pieces that are pivotally attached to each other so that they can be opened and closed, so that both cutting edges are always kept in close contact with each other. The present invention relates to a contact structure of scissors that allows the scissors to be opened and closed in a state where the scissors are in contact with each other, and also allows smooth movement with light contact pressure at the pressure contact portion.

Prior Art Conventionally, as this type of scissors, there are those described in Utility Model Application Publication No. 54-18377 and Utility Model Application Publication No. 55-159064. The press-contact parts of these scissors are all formed integrally with the scissor pieces and cannot be removed, so it is not possible to replace only the press-contact parts.When assembling a pair of scissors pieces together, the cutting edge is The contact pressure of the cutting edge was determined automatically, and it was not possible to finely adjust the contact pressure of the cutting edge unless the curvature of the blade was changed. However, adjusting the warpage was extremely difficult even for experts.

Purpose The purpose of the present invention is to form a contact member having the pressure contact portion separately from a pair of scissors pieces, and to make this contact member removable from the scissors pieces, so that both scissors pieces can be assembled together. When attaching the blade, the contact pressure of the cutting edge can be easily adjusted by replacing the contact member, and by fixing the contact member using the existing opening/closing center axis, there is no need for a separate fixation. There is no need to provide any means, and the contact member can be positioned reliably with a simple structure. Furthermore, by elastically pressing the pressure contact part of the contact member, the blade edge can be moved according to its elastic force. It has a strong contact pressure, and when an unreasonable force is applied, the cutting edge escapes against the elasticity.
It is an object of the present invention to provide a contact point structure for scissors that can prevent damage to the cutting edge and further allow both scissor pieces to be locked with one touch.

Structure of the invention In order to achieve this object, the present invention provides scissors in which a pair of scissors pieces 1 and 2 are supported by a spindle 11 so as to be openable and closable.
1a, a locking hole 12 is provided on both sides of the support shaft 11, and the other scissors piece 2 is provided with a shaft hole 15 through which the support shaft 11 of the one scissors piece 1 can be inserted. In addition, an insertion hole 16 is provided on both sides of the coaxial hole 15 through which the locking protrusion 11a of the support shaft 11 can be inserted, and the pair of scissors pieces 1, 2 are provided.
A metal contact member 17 that is separate from the scissors piece 1 is provided with a shaft hole 18 through which the support shaft 11 of the one scissor piece 1 can be inserted, and the support shaft 11 is provided on both sides of the coaxial hole 18.
An insertion hole 19 is provided through which the locking protrusion 11a can be inserted.
2 and the locking hole 1
2 is provided with a locking leg portion 21 that can be inserted and locked, and the locking leg portion 21 of the touch point member 17 is inserted and locked into the locking hole 12 of the one scissors piece 1, and the other scissors piece 2 is inserted and locked.
When both scissors pieces 1 and 2 are locked by inserting the support shaft 11 of the one scissors piece 1 into the shaft hole 15 of the scissors pieces 1 and 2 and rotating both scissors pieces 1 and 2 with respect to each other, the press contact part 20
is elastically pressed against the other scissor piece 2 on the proximal end side of the support shaft 11.

Embodiment A first embodiment of the present invention will be described below with reference to FIGS. 1 to 8. As shown in FIG. It consists of operating parts 5 and 6 connected to the blade parts 3 and 4, and blade bodies 7 and 8 made of ceramic are attached to the opposing inner surfaces of the double blade parts 3 and 4 as shown in FIG. A blade body 8 of one of the scissors pieces 2 is provided with a protruding portion 8a for peeling tangerines or the like.

As shown in FIGS. 2 and 5, circular recesses 9 and 10 are formed on both the inner and outer surfaces of the opening/closing central portion A of one scissor piece 1, and a circular support shaft 11 is formed in the center thereof. As well as being formed, its supporting shaft 1
Locking holes 12 are transparently provided on both sides of 1.
This support shaft 11 projects through the recess 9 on the inner surface, and has locking protrusions 11a formed on both sides of its tip.

Circular recesses 13 and 14 are also formed on both the inner and outer surfaces of the opening/closing center portion A of the other scissor piece 2,
As shown in FIG. 3, the base end 8b of the blade 8 is fitted into the inner recess 13. Both recesses 1
A circular shaft hole 15 and insertion holes 16 that are continuous on both sides of the shaft hole 15 are transparently provided in the center of each of the shaft holes 3 and 14 .

A contact point member 17 having a circular shape as shown in FIG.
is separated from a pair of scissors pieces 1 and 2, and has a circular shaft hole 18 in its center and an insertion hole 19 continuous on both sides of the shaft hole 18. An arcuate pressure contact portion 20 is provided protrudingly.
Locking legs 21 are protruded from both sides of the contact member 17 corresponding to both insertion holes 19 .

As shown in FIG. 5, a compression coil spring 22 shown in FIG.
The support shaft 11 and its locking protrusion 11a are fitted into the shaft hole 18 and the insertion hole 19 of the contact point member 1.
Both locking legs 21 of 7 are inserted into the locking hole 12 and locked to the side edges thereof, and the contact member 17 is elastically mounted around the support shaft 11 by a compression coil spring 22.

When assembling both scissors pieces 1 and 2 so that they can be opened and closed, the inner sides of both scissors pieces 1 and 2 are overlapped with each other in an open state, and the support shaft of one scissors piece 1 is attached as shown in FIG. 11 and its locking protrusion 11a to the other scissor piece 2
The supporting shaft 11 of one scissors piece 1 and the shaft hole 15 of the other scissors piece 2 are fitted rotatably through the shaft hole 15 and insertion hole 16 of As shown, both scissors pieces 1 and 2 are closed together, and the locking protrusion 11a of the support shaft 11 is locked to the outer peripheral edge of the shaft hole 15 in the recess 14 on the outer surface side of the scissors piece 2. In this state, as shown in FIGS. 1 and 8, the pressure contact portion 20 of the contact point member 17 is located on the proximal end side of the support shaft 11 and on the inner surface side of the other scissors piece 2, that is, on the proximal end portion 8b of the blade body 8. The scissor pieces 1 and 2 are elastically pressed against each other by a compression coil spring 22, and the scissor pieces 1 and 2 are pushed apart from each other around the support shaft 11 to apply contact pressure to the blade bodies 7 and 8.

In the second embodiment shown in FIGS. 9 and 10, a metal plate 23 is provided in the recess 13 on the inner surface of the scissors piece 2.
is fitted into the metal plate 23, and a recess 1 is formed in the center of the metal plate 23.
The shaft hole 2 matches the shaft hole 15 and insertion hole 16 of No. 3.
4 and an insertion hole 25 are transparently provided. In the first embodiment described above, the contact member 17 is provided at the base end 8b of the blade 8.
However, in this second embodiment, the blade body 8 is not extended to the opening/closing center portion A, and the pressure contact portion 20 of the contact point member 17 is brought into contact with this metal plate 23. .

It is also possible to use a disc spring 26 as shown in FIG. 11 in place of the compression coil spring 22 in the first embodiment, or to make the contact member 17 itself elastic.

Effects According to the present invention described in detail above, the contact member 17 having the pressure contact portion 20 is formed separately from the pair of scissors pieces 1 and 2, and this contact member 17 is connected to the scissors pieces 1 and 2. Since the scissors pieces 1 and 2 are made removable, when the scissors pieces 1 and 2 are assembled together, the contact pressure of the cutting edge can be easily finely adjusted by replacing the contact member 17, and the contact member 17 can be fixed easily. the existing opening/closing center shaft (support shaft 11)
Since it is carried out with
7 can be reliably positioned. In addition, since the pressure contact portion 20 of the contact member 17 is pressed elastically, the cutting edge has a contact pressure corresponding to its elastic force, and when an unreasonable force is applied, it escapes against the elasticity, and the cutting edge Not only can damage be prevented, but also the scissors pieces 1 and 2 can be locked very easily with one touch, making it possible to replace the contact member 17 and improve the ease of assembling the scissors as a whole.

[Brief explanation of the drawing]

Figures 1 to 8 show the first embodiment, Figure 1 is a front view showing the assembled state of the scissors, Figure 2 is an exploded perspective view showing the structure of the central part of the scissors, and Figure 3 is FIG. 4 is a sectional view showing the attachment structure of the blade, and FIG. 5 is a front view showing the inner surface of one of the scissors pieces, and FIG. A sectional view showing a state where the support shaft of one scissor piece and its locking protrusion are inserted into the shaft hole and insertion hole of the other scissor piece, FIG. A perspective view, FIG. 7 is a sectional view showing the opening/closing center portion taken along the line X-X in FIG. 1, and FIG. 8 is a sectional view showing the opening/closing center portion taken along the Y-Y line in FIG. 9 and 10 show the second embodiment, FIG. 9 is an exploded perspective view showing the structure of the opening/closing central part of the scissors, and FIG. 10 is a front view showing the inner side of the scissors piece.
FIG. 11 is a sectional view of the opening/closing center portion showing another example of the biasing means of the contact member. Scissor pieces...1, 2, spindle...11, locking protrusion...
11a, Locking hole...12, Shaft hole...15, Insertion hole...16, Contact member...17, Shaft hole...18, Insertion hole...19, Pressure contact part...20, Locking leg part ...2
1, Compression coil spring...22, Belleville spring...26,
Opening/closing center part...A.

Claims (1)

[Claims for Utility Model Registration] In scissors in which a pair of scissors pieces 1 and 2 are supported by a support shaft 11 so as to be openable and closable, one of the scissors pieces 1 is formed with a support shaft 11 having locking protrusions 11a on both sides of the tip. At the same time, the support shaft 11
A locking hole 12 is provided on both sides of the scissors piece 2, and a support shaft 11 of the one scissors piece 1 is provided in the other scissors piece 2.
An insertion hole 16 is provided on both sides of the coaxial hole 15 through which the locking protrusion 11a of the support shaft 11 can be inserted, and is separated from the pair of scissors pieces 1 and 2. The metal contact member 17 is provided with a shaft hole 18 through which the support shaft 11 of the one scissor piece 1 can be inserted, and a coaxial hole 18 is provided.
An insertion hole 19 is provided on both sides of the shaft 11 through which the locking protrusion 11a of the support shaft 11 can be inserted, and the contact member 17 is further provided with a pressure contact portion 20 that applies contact pressure to both scissors pieces 1 and 2. A locking leg portion 21 that can be inserted and locked into the locking hole 12 is provided, and a contact point member 17 is provided in the locking hole 12 of the one scissors piece 1.
At the same time, insert and lock the locking leg portion 21 of the scissors piece 1 into the shaft hole 15 of the other scissors piece 2.
When the two scissors pieces 1 and 2 are locked by inserting the two scissors pieces 1 and 2 through each other and rotating the two scissors pieces 1 and 2, the other scissors piece 2 A contact point structure in scissors characterized by being in elastic pressure contact with the scissors.