JPH0323121Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a support structure for a pressing lever in a nail clipper.

(Prior art) Conventionally, this type of support structure was developed in the 1980s.
There is one shown in Publication No. 116905. In this support structure, a support pin is rotatably passed through the lower blade body and the upper blade body, and this support pin is inserted into a notch formed at the base end of the pressing operation lever on the upper blade body, and the support pin is inserted into the notch formed at the base end of the pressing lever on the upper blade body, A support shaft is inserted into an insertion hole formed through the base end of the operating lever and the support pin.

(Problem to be Solved by the Invention) However, since the support pin is rotatable with respect to the notch of the pressing lever, when the support pin is attached, it is connected to the insertion hole of the proximal end of the pressing lever. The insertion holes of the support pins were difficult to match with each other. Therefore, if these are out of alignment with each other, the operator must align them one by one and then insert the support shaft into both insertion holes, making the assembly of the nail clipper very troublesome.

Therefore, the present invention attempts to solve this problem by making the support pin unrotatable with respect to the notch of the pressing operation lever.

Structure of the invention (Means for solving the problems) In order to solve the above problems, the present invention uses the lower blade body 1.
A support pin 3 is inserted into the holes 1b and 2b drilled in the upper blade body 2, and the support pin 3 is attached to the lower blade body 1 using a locking head 3a formed at one end of the support pin 3. This support pin 3 is inserted into the notch 7 formed at the base end of the pressing operation lever 6 on the upper blade body 2, and the insertion formed at the base end of the pressing operation lever 6 and this support pin 3 is inserted. In a nail clipper in which a support shaft is inserted into the holes 9 and 5, a locking surface 4 is formed on the support pin 3 to engage with the notch 7 in a non-rotatable manner, and the locking surface 4 and The lower blade body 1 is located between the locking head 3a and the locking head 3a.
A circular fitting portion 3b that fits into the hole 1b and rotates freely is formed.

(Function) When the support pin 3 is inserted into the notch 7 of the pressing operation lever 6, the locking surface 4 of the support pin 3 is locked in the notch 7, and the support pin 3 rotates relative to the notch 7. without inserting the support pin 3 into the insertion hole 5 and the pressing operation lever 6.
The insertion holes 9 and the insertion holes 9 are surely aligned with each other. On the other hand, when the nail clipper is used, the circular fitting portion 3b of the support pin 3 fits into the hole 1b of the lower blade body 1 and rotates.

(Example) An example of the present invention will be described below with reference to the drawings.

The lower blade body 1 and the upper blade body 2 are fixed to each other at their base ends, and have cutting edges 1a and 2 formed at their tips.
It has elasticity in the vertical direction on the a side. Circular holes 1b, 2b are bored in the upper and lower blade bodies 2, 1 slightly closer to the proximal end than the cutting edges 1a, 2a, and a support pin 3 is inserted therein. This support pin 3 is attached to the lower blade body 1 by a locking head 3a at its lower end.
It is locked to.

A circular fitting portion 3b is formed near the locking head 3a of the support pin 3 and is adapted to fit into the hole 1b of the lower blade body 1.

Further, the upper end portion of the support pin 3 is exposed above the upper blade body 2. On both sides of this support pin 3, extending from slightly above the locking head 3a to its upper end,
A planar locking surface 4 is formed, and an insertion hole 5 is provided between the locking surfaces 4 at the upper end of the support pin 3 .

The pressing lever 6 is molded from synthetic resin, and the upper end of the support pin 3 is inserted into a notch 7 formed at its base end. With this notch 7,
A support portion 8 is formed in a bifurcated shape at the base end of the pressing operation lever 6, and an insertion hole 9 is provided through both support portions 8.
A support shaft 10 is inserted into the insertion hole 5 at the upper end of the support pin 3, so that the pressing operation lever 6 can rotate vertically on the upper blade body 2. At this time, both locking surfaces 4 of the support pin 3 are engaged with the notch 7 in a non-rotatable manner.

In this way, when the support pin 3 is inserted into the notch 7, the support pin 3 does not rotate relative to the notch 7, so the insertion hole 5 of the support pin 3 and the insertion hole of both the support parts 8 of the pressing operation lever 6 are inserted. 9 reliably match, and the support shaft 10 can be easily inserted into the insertion holes 5 and 9.

Furthermore, since the circular fitting part 3b of the support pin 3 fits into the hole 1b of the lower blade body 1 and rotates, problems due to contact between the two parts are less likely to occur, and stress concentration is also reduced. There is no possibility that dust will accumulate in the hole 1b and cause unsanitary conditions.

Effects of the invention As described above, in the present invention, a locking surface that non-rotatably engages with a notch in the support pin and a hole in the lower blade body are fitted between the locking surface and the locking head. By forming a circular fitting part that rotates freely, the support pin and the insertion hole of the notch are reliably aligned, the support shaft can be easily installed, and the efficiency of nail clipper assembly work can be improved. . In addition, even if the support pin is linked to the rotation of the pressing operation lever when using the nail clipper, problems due to contact between the circular fitting part and the hole in the lower blade body are less likely to occur. , stress concentration is also reduced.

Furthermore, since the hole and the circular fitting part fit together, excellent effects such as preventing dust from accumulating in the hole and causing unsanitary conditions are achieved.

[Brief explanation of the drawing]

Figure 1 is a plan view showing the nail clipper of this embodiment, Figure 2 is a plan view showing the nail clipper of this embodiment;
The same figure is a partially cutaway side view, and FIG. 3 is a partially exploded perspective view showing the structure of the shaft support of the pressing operation lever. 1...Lower blade body, 2...Upper blade body, 1b, 2b...
Hole, 3...Support pin, 3b...Circular fitting part, 4...
...Latching surface, 5...Insertion hole, 6...Press operation lever,
7... Notch, 9... Insertion hole, 10... Support shaft.

Claims (1)

[Scope of claim for utility model registration] Holes 1b and 2 formed in the lower blade body 1 and the upper blade body 2
The support pin 3 is inserted into the lower blade body 1 by the locking head 3a formed at one end of the support pin 3, and the pressing operation lever on the upper blade body 2 is engaged. This support pin 3 is inserted into the notch 7 formed at the base end of the lever 6, and the support pin 3 is inserted into the base end of the pressing operation lever 6 and this support pin 3.
In the nail clipper in which a support shaft 10 is inserted into insertion holes 9 and 5 formed in A nail clipper characterized in that a circular fitting part 3b that fits into the hole 1b of the lower blade body 1 and rotates freely is formed between the locking surface 4 and the locking head 3a. Structure of pressure operation lever in.