JPS62266005A - Support structure of press operation lever of nail clipper - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) This invention relates to a support structure for a pressing lever in a nail clipper.

(Prior art and problems to be solved by the invention) Conventionally, in this type of support structure, a support pin is usually rotatably penetrated through the lower blade body and the upper blade body, and the lower end of the support pin The head integrally formed with is locked to the lower surface of the lower blade body, and the upper end of this support pin is inserted into the notch recess formed at the base end of the pressing operation lever on the upper blade body, A support shaft is inserted into an insertion hole formed through the base end of the pressing lever and the F end of the support pin.

To assemble this nail clipper, first pass the support pin through the upper and lower blade bodies, then press the upper and lower blades in a direction toward each other to make the upper end of the support pin protrude above the upper blade body, and then In this state, the support shaft is inserted into the insertion hole of the support pin and the pressing operation lever.

However, the assembly work was troublesome because it was necessary to keep the upper and lower blades pressed at all times during the insertion and attachment of the support shaft.

In view of this problem, a nail clipper described in Japanese Utility Model Publication No. 4.9-45875 has been provided. When assembling this nail clipper, first insert the spindle into the insertion hole provided in the support part of the push operation lever, then hook the inverted U-shaped support pin to this spindle, and attach both upper and lower blades. The U-shaped seat plate is inserted into the locking recess of the support pin of the lower lever of the lower blade body and is locked to the lower blade body.

However, if left as is, there is a risk that the seat plate may fall off, so it is welded to a support pin.

Therefore, in such a support structure, welding is indispensable, and assembly work is still troublesome.

Also, the support pin and seat plate are exposed below the lower blade body.
C, the appearance looked bad.

Therefore, the first invention is to eliminate the welding process and simplify the assembly work by using an elastic retaining ring. Furthermore, in addition to the first invention, the second invention improves the appearance by using a cap.

Structure of the Invention (Means for Solving Problems) That is, the first invention includes a support pin in a hole 4 penetrating the lower blade body 1 and the upper blade body 2, as shown in the drawings of the embodiments described later. In this nail clipper, the base end of this 7 is connected to the upper end of this support pin 5 by a pressing operation on the upper blade body 2, and a retaining groove 12 is formed on the outer periphery of the lower end of the support pin 5. , the retaining ring 13 made elastic by the notch 14 is inserted into this retaining groove 12.
It is fitted into the lower blade body 1 and locked to the lower blade body 1.

In addition to the first invention, the second invention further includes the lower end of the support pin 5 and the Jl ring 13, as shown in boxes 9 to 13 and 14 to 17 of the drawings of the embodiment described later. A cap 19 is provided to cover it.

(Function) In these inventions, when the upper blade body 2 is pushed down by the pressing operation lever 7, the retaining ring 13 is locked to the lower blade body 1 and receives the force, so that the upper and lower blade bodies 2.1 are pulled together. Get close and cut off the claws.

(Embodiment) First, an embodiment embodying the first invention will be described with reference to FIGS. 1 to 3.

The lower blade body 1 and the lower blade body 2 are fixed to each other at their base ends 3, and have a cutting edge 1a formed at their tips.

It has elasticity in the vertical direction on the 2a side. A loose fitting hole 4 is formed through the upper and lower blade bodies 2, 1 at a position slightly closer to the proximal end than the cutting edges 2a, 1a. A support pin 5 is rotatably passed through the loose fitting hole 4, and its upper end protrudes above the upper blade body 2. An insertion hole 6 is provided through the upper end of the support pin 5 .

A bifurcated support portion 8 and a notch recess 9 are formed at the base end of this 7 by a pressing operation, and an insertion hole 10 is provided through the support portion 8 . The upper end of the support pin 5 is inserted into the cutout recess 9, and a support shaft 11 is inserted into the insertion hole 10 and the insertion hole 6 at the top end of the support pin 5. Thereby, the pressing operation lever 7 can be rotated in the vertical direction on the upper blade body 2.

A retaining groove 12 is formed in the entire circumferential direction of the outer periphery at the lower end of the support pin 5, and a retaining ring 13 is fitted into the retaining groove 12 and is retained on the lower surface of the lower blade body 1.

In this retaining ring 13, a notch 14 is formed on the negative side, and pressure contact portions 16 extending bifurcated from both sides of the base 15 are made elastic. Further, a protrusion 17 is integrally formed inside the base portion 15 and the side pressure contact portion 16, respectively. And this retaining ring 13
When the protrusions 17 are fitted into the stopper grooves 12, the respective protrusions 17 are fitted into the stopper grooves 12, as shown in Fig. M3. In particular, the protrusion 17 of the side pressure contact portion 16 is engaged with and press-contacted with the inner bottom surface of the retaining groove 12.

Now, when using the nail clipper constructed as described above, use a pressing operation to invert the nail 7 and press it downward as shown by the imaginary line in FIG. As a result, the upper blade body 2
is pushed down against its elasticity, and the upper and lower blade bodies 2.1 come close to each other so that their cutting edges 2a and 'la come into contact with each other, and the nail can be cut. At this time, the retaining ring 13 receives the force of the pressing operation lever 7 and prevents the support pin 5 from being pulled out.

On the other hand, when attaching the nail clippers, the L end of the support pin 5 is first inserted into the notch recess 9 of the pressing operation lever 7, and the support shaft 11 is inserted into the insertion holes 6 and 10 thereof. Next, this support pin 5 is inserted into the loose fitting hole 4 of the upper and lower blades #2 and 1. Roughly press the upper and lower blade bodies 2.1 toward each other to make the lower end of the support pin 5 protrude below the lower blade 1, and fit the retaining ring 13 into the retaining groove 12 of this lower end. to lock it to the lower surface of the lower blade body 1.

In this way, the pressing operation moves the lever 7 and the support pin 5 to the support shaft 11.
After the support pin 5 is connected to the lower blade body 1 using the ring 13, the work of inserting the support shaft 11 becomes easier. However, the work of locking the support pin 5 to the lower blade body 1 can be easily carried out by simply fitting the retaining ring 13 into the retaining groove 12 of the support pin 5. In this case, the retaining ring 13 has a retaining groove 12 due to its elasticity.
Since it is pressed into contact with the stopper 12, there is no possibility of it being unintentionally removed from the stopper 12.

Incidentally, instead of the retaining ring 13 of the above embodiment, a retaining ring 13 as shown in FIG. 4 may be used. In this retaining ring 13, a notch 14 is formed as in the previous embodiment, but there is no protrusion 17 as in the high-end embodiment, and the entire inner circumference is fitted into the set groove 12.

Next, the embodiments of Sen, which also embody the first invention, will be described in fifth to fifth embodiments.
This will be explained according to Figure 8.

In this embodiment, on the lower surface of the lower blade body 1 in the previous embodiment,
A counterbore 18 is formed in the Ii fitting hole 4, and the depth of the borehole 18 is the same as or slightly larger than the thickness of the retaining ring 13, and the diameter of the counterbore 18 is equal to or slightly larger than the thickness of the retaining ring 1.
The diameter is slightly larger than 3. And retaining ring 1
3 is fitted into a counterbore 18 so as not to protrude from the lower surface of the lower blade body 1.

Therefore, not only is the appearance better than in the embodiment described above, but the retaining ring 13 is locked to the inner circumferential portion of the counterbore 18, making it difficult for it to fall off.

Next, an embodiment embodying the first and second inventions will be described in the ninth to third embodiments.
This will be explained according to FIG.

In this embodiment, a cap 19 is added to the previous embodiment shown in FIGS. 1-3. This cap 19 has a peripheral wall 20 formed on its outer periphery, a recess 21 formed inside the peripheral wall 20, and a stop pin 22 protruding from the center of this recess 21. There is.

On the other hand, a stopper hole 23 is provided in the center of the lower end surface of the support pin 5.
is formed. The retaining pin 22 of the cap 19 is press-fitted into the retaining hole 23, the lower end of the support pin 5 is fitted into the recess 21 of the cap 19, and the peripheral wall 2o of the cap 19 is inserted into the outer periphery of the end surface of the retaining ring 13. is in contact with. Therefore, the lower end of the support pin 5 and the stopper 13 are covered by the cap 19, resulting in a better appearance.

Incidentally, as shown in FIG. 13, the retaining ring 13 may also be fitted into the recess 21 of the cap 19 so that the outer periphery of the retaining ring 133 is covered by the peripheral wall 20 of the cap 19.

Next, other embodiments embodying the first and second inventions will be described in the first part.
This will be explained according to FIGS. 4 to 17.

In this embodiment, the pivot 19 and its mounting structure are modified from the embodiment shown in FIGS. 9 to 12. In the cap 19 of this embodiment, a peripheral wall 20 is formed on the outer periphery, a recess 21 is formed inside the peripheral wall 20, and locking legs 24 are formed on both sides of the peripheral wall 20. ing. On the other hand, a recess 25 is formed in the lower blade body 1 on both sides of the loose fitting hole 4.

The locking legs 24 of the cap 19 are locked in the locking recesses 25. Therefore, the lower end of the support pin 5 and the retaining ring 13 are covered by the cap 19, improving the appearance.

Effects of the Invention In short, according to the first invention, when connecting the push lever 7 and the support pin 5, it is possible to perform the work of inserting the support shaft 11 in advance, regardless of whether the upper or lower blade bodies 2 or 1 are connected. ,
The support pin 5 can be locked to the lower blade body 1 by simply fitting the retaining ring 13 into the retaining groove 12 of the support pin 5 using its elasticity 9, thereby facilitating the nail clipper assembly work. It can improve efficiency and is effective.

Further, according to the second invention, since the lower end of the support pin 5 and the retaining ring 13 are covered by the cap 19, in addition to the effect of the first invention, there is an effect of improving the external appearance.

[Brief explanation of drawings]

1 to 4 show an embodiment according to the first invention, FIG. 1 is a partially cutaway side view showing the nail clipper of this embodiment, and FIG. 2 is a partially exploded view showing the support structure of the pressing operation lever. 3 is an enlarged sectional view taken along the line X-X of FIG. 1, FIG. 4 is an enlarged sectional view showing another example of the retaining ring, and FIGS. 5 to 8 show other embodiments of the first invention. 5 is a partially cutaway side view showing the nail clipper of this embodiment, FIG. 6 is a partially exploded perspective view showing the support structure of the pressing operation lever, and FIG. 7 is a partially enlarged sectional view of FIG. 5. , FIG. 8 is an enlarged sectional view taken along the Y-Y line in FIG. 5, FIGS. 9 to 12 show an embodiment according to the first and second inventions, and FIG. 10 is a partially exploded perspective view showing the support structure of the pressing operation lever; FIG. 11 is a partially enlarged sectional view of FIG. 9; FIG. 12 is a partially enlarged bottom view of FIG. 9;
FIG. 13 is a partially enlarged cross-sectional view showing another example of the cap;
4 to 17 show other embodiments according to the first and second inventions, FIG. 14 is a partially cutaway side view showing the nail clipper of this embodiment, and FIG. 15 shows the support structure of the pressing operation lever. 16 is a partially enlarged sectional view of FIG. 14, and FIG. 17 is a partially enlarged bottom view of FIG. 14. Lower blade body 1, upper blade body 2, support pin 5, pressing operation lever 7, support shaft 11, retaining groove 12, retaining ring 13, notch 14, counterbore 18, cap 19, retaining pin 22.1 toe hole 23, locking leg 24, locking recess 25゜Patent applicant: Kaiin Knife Development Center Representative, patent attorney On 1) Hironobu Figure 7 JP-A-62-21d'1 DO5 (8) Figure 16 17rXJ

Claims (1)

[Claims] 1. A hole (4) provided through the lower blade body (1) and the upper blade body (2).
), and the base end of the pressing lever (7) on the upper blade body (2) is connected to the upper end of the support pin (5). A retaining groove (12) is formed on the outer periphery of the lower end of ), and a retaining ring (13) made elastic by a notch (14) is fitted into this retaining groove (12) and attached to the lower blade body (1). A support structure for a pressing operation lever in a nail clipper, characterized in that it is locked. 2. A support structure for a pressing operation lever in a nail clipper according to claim 1, wherein the hole (4) of the lower blade body (1) has a counterbore (18) into which a retaining ring (13) is inserted. 3. A hole (4) provided through the lower blade body (1) and the upper blade body (2).
), and the base end of the pressing lever (7) on the upper blade body (2) is connected to the upper end of the support pin (5). A retaining groove (12) is formed on the outer periphery of the lower end of ), and a retaining ring (13) made elastic by a notch (14) is fitted into this retaining groove (12) and attached to the lower blade body (1). A cap (
19) A support structure for a pressing operation lever in a nail clipper, characterized in that it is provided with: 4. The support structure for a pressing operation lever in a nail clipper according to claim 3, wherein the cap (19) is attached to the lower end of the support pin (5). 5. The support structure for a pressing operation lever in a nail clipper according to claim 3, wherein the cap (19) is attached to the lower blade body (1).