JPH0771528B2 - Pressing lever for nail clipper Support structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a supporting structure for a pressing operation of a nail clipper.

(Prior Art) In a conventional nail clipper, usually, a support shaft is rotatably inserted through both upper and lower blades, and a lower end portion of the support shaft is locked by a lower blade body and an upper blade body. A pressing lever is supported on the upper end of the support shaft by a connecting pin so as to be vertically rotatable.

However, in the nail clipper of this structure, since the support shaft and the connecting pin are required, the number of parts increases and the structure becomes complicated, and the assembling is very troublesome due to the pressing operation on the upper and lower blades.

Therefore, a nail clipper disclosed in Japanese Utility Model Publication No. 54-41825 was devised. In this nail clipper, the upper blade body and the lower blade body are fixed to each other so that each of them has elasticity in a direction of approaching and separating, and a support frame is inserted into both the upper and lower blade bodies, and the upper and lower blade bodies are vertically fitted to the support frame. Both upper and lower engaging portions are formed by which both blades are pressed against each other by their elastic force, and an engaging hole and an engaging protrusion are provided between the upper and lower engaging portions of the support frame and the upper and lower blades. Has been. In particular, the front end of the upper blade is inserted between the upper blade and the upper locking portion of the support frame by the pressing operation.
Then, by sliding this front end between the upper blade and the upper locking portion of the support frame, the pressing operation lever rises diagonally above the upper blade body and the pressing lever is above the upper blade body. It is designed so that it can be positioned when it is not in use and overlaps.

(Problems to be solved by the invention) However, since the front end portion of the pressing operation is constantly in pressure contact with the upper locking portion of the support frame by the elastic force of the upper blade body, when the pressing operation lever is slid, There is a problem that frictional resistance occurs between the front end portion and the upper blade and the upper locking portion of the support frame, which makes it difficult to perform the sliding operation. In addition, when the support frame is inserted into the upper and lower blades and the front end portion is inserted by pressing between the upper blade and the support frame, the upper blade is supported with the support frame supported. Pressing against the lower blade side against the elastic force, widen the gap between the upper blade and the upper locking part of the support frame, and while maintaining that state, press between them to insert this front end part. It was necessary to carry out this assembling work because of the pressing operation.

A first object of the present invention is to eliminate the support frame and directly form a locking recess for the upper and lower blades on the pressing lever, thereby reducing the number of parts and simplifying the structure. The purpose is to facilitate this assembly by pressing.

A second object of the present invention is, in addition to the above-mentioned object, to prevent the upper and lower blades from coming out of the engaging recesses by a pressing operation at the time of use so that they do not accidentally come off.

Configuration of the Invention (Means for Solving the Problems) The present invention is directed to an upper blade 1 and a lower blade as shown in FIGS. 1 to 7 and 8 to 10 in the drawings of embodiments described later. In the nail clipper in which the body 2 and the body 2 are fixed to each other so that each body has elasticity in a direction of approaching and separating from each other, and the pushing operation lever 4 is supported on the upper blade body 1 by its supporting portion 4a so as to be vertically rotatable. , The supporting portion 4a of the pressing lever 4 is formed with the upper and lower blade bodies 1 and 2 to be fitted therein, and the supporting portion 4a and the lower blade body 2 are engaged with each other. Dynamic fulcrums 3, 8, 14, 16 are provided, and further, locking portions 9, 10 are provided between the support portion 4a and the upper blade body 1 so that they can move relative to each other as the pressing lever 4 rotates. It is a thing.

(Operation) In the present invention, when the pressing lever 4 is pressed downward during use, the pressing lever 4 rotates about the pivotal fulcrums 3, 8, 14, 16 and the upper lever 4 is pressed by the pressing lever 4. The body 1 is pressed downwards. As a result, the upper blade 1 approaches the lower blade 2, and the cutting edges 1a and 2a of the upper and lower blades 1 and 2 contact each other. On the other hand, when the pushing lever 4 is released, the pushing lever 4 is lifted by the elastic force of the upper and lower blades 1 and 2 to move the pivot fulcrum portion.
It rotates upward around 3,8,14,16 and returns to the original state.

In particular, when the pressing lever 4 is rotated, the locking portion 9 of the pressing lever 4 is rotated.
And the locking portion 10 of the upper blade 1 move relative to each other, but when the pressing lever 4 is lifted above a certain level, both locking portions 9 and 10 engage with each other and the pressing lever 4 rotates upward. Stop doing.

First Embodiment First, a first embodiment of the present invention will be described with reference to FIGS.

As shown in FIG. 7, the upper blade body 1 and the lower blade body 2 are fixed to each other at their rear end portions, and each has elasticity in a direction of approaching and separating. Blade edges 1a and 2a are formed facing each other at the front end portions of the upper and lower blade bodies 1 and 2, respectively. Support concave portions 3 are formed on the left and right edges of the lower surface of the lower blade 2 near the cutting edge 2a of the lower blade 2.

The pushing lever 4 comprises an upper plate portion 5 and left and right side plate portions 6, and a supporting portion 4a is formed at the front end portion of the pushing lever 4. In the support portion 4a, support arm portions 6a are provided at the front end portions of the left and right side plate portions 6 so that the support arm portions 6a and the front end 5a of the upper plate portion 5 are locked as locking holes. A recess 7 is formed. Support projections 8 are formed in a bent shape at the tips of the support arms 6a so as to face each other.

In particular, a locking projection 9 is formed on the front end 5a of the upper plate 5, and the upper blade 1 has a locking hole near the cutting edge 1a.
10 are formed.

Then, as shown in FIGS. 1 and 2, the front end portions of the upper and lower blade bodies 1 and 2 are inserted into the locking recesses 7 of the pressing lever 4 and the support protrusions 8 of the left and right support arm portions 6a are attached to the lower blade body. 2 is engaged with the left and right support recesses 3 from below, and the pressing lever 4
The engaging projection 9 is engaged with the engaging hole 10 from the upper side of the upper blade 1. The engagement between the support concave portion 3 and the support protrusion 8 constitutes a rotation fulcrum portion of the pressing lever 4.

A pressing member 11 is attached inside the pressing lever 4.
The pressing member 11 is formed by bending a rod having a circular cross section into a substantially U-shape, and both end portions 11a of the pressing member 11 are pressed.
It is rotatably supported with respect to the left and right side plate portions 6 and can overlap the lower side of the upper plate portion 5 of the pressing lever 4. Further, locking recesses 12 are cut out at both left and right edges of the rear end of the lower blade body 2, and small protrusions 13 are formed inside the rear end of the left and right side plate portions 6 of the pressing lever 4. There is.

Now, when in use, the pressing member 11 is pressed to operate the upper plate portion 5 of the lever 4.
When overlapped on the lower surface of the front side, the pressing lever 4 is supported by the pressing member 11 on the upper blade 1 and rises obliquely upward as shown in FIGS. When the pressing lever 4 is pressed downward, the pressing lever 4 rotates downward about the pivotal fulcrums 3 and 8, and the locking projection 9 of the pressing lever 4 moves upward. While moving the locking hole 10 of
The upper blade 1 is pushed by the pressing member 11 and bends downward, so that the upper and lower blade edges 1a and 2a abut each other.

On the other hand, when not in use, as shown in FIGS. 3 and 4, with the pressing member 1 superposed on the rear lower surface of the upper plate portion 5 of the pressing lever 4, the pressing lever 4 is pushed downward. When the upper and lower blades 1 and 2 are housed in the pressing lever 4, the upper and lower blades 1 and 2 are inserted between the left and right side plate portions 6 of the pressing lever 4 as shown in FIGS. 5 and 6. The small protrusions 13 on both side plate portions 6 are engaged with both the locking recesses 12 of the lower blade body 2 by its elasticity, and the upper blade body 1 is pushed downward by the front end 5a of the upper plate portion 5 of the pressing lever 4. When pressed, the upper and lower cutting edges 1a, 2a approach each other.
Further, when in use, the rear end of the pressing lever 4 is lifted to disengage the small projections 13 of the left and right side plate portions 6 from the two locking recesses 12 of the lower blade body 2, and the pressing lever 4 is released to release the upper and lower blade bodies 1. The pushing force lever 4 is lifted by the elastic force of 1 and 2 via the front end 5a of the upper plate portion 5 of the pushing lever 4 and pivots upward about the pivotal fulcrums 3 and 8, and thereafter the pushing member 11 is pivoted. And Fig. 1 and 2
It can be used as shown in the figure.

Particularly, in this embodiment, since there is no supporting frame as in the prior art, the number of parts is reduced and the structure is simplified. In addition, by simply inserting the upper and lower blades 1 and 2 into the locking recess 7 of the pressing lever 4 and inserting the supporting protrusion 8 of the pressing lever 4 into the supporting recess 3 of the lower blade 2, Since the pressing lever 4 can be supported by the upper and lower blades 1 and 2, the assembling of the levers becomes very easy.

Further, since the locking projection 9 of the pressing lever 4 is engaged with the locking hole 10 of the upper blade body 1, when the pressing lever lever 4 is lifted diagonally upward on the upper blade body 1 during use, The rotation of the operating lever 4 is blocked by the engagement between the locking projection 9 and the locking hole 10 and the pressing lever 4 does not rise for a certain amount or more, and the upper and lower blades 1 and 2 press the locking recess 7 of the pressing lever 4. It is possible to prevent careless removal from the.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIGS.

In the first embodiment, both supporting recesses 3 are formed in the lower blade 2, but in the second embodiment, the supporting holes 14 are formed in the lower blade 2 instead of both supporting recesses 3. There is.

Further, in the supporting portion 4a of the pressing lever 4 according to the second embodiment, the upper plate portion 5 is provided with a rectangular engaging hole 15, and both upper and lower engaging edges 15a and 15b of the engaging hole 15 are provided. Lower locking edge 15b
A support projection 16 is formed on the upper end of the upper end, and an engaging projection 9 is formed on the upper engaging edge 15a. This locking hole 15
The front ends of the upper and lower blades 1 and 2 are inserted into the
The upper and lower blades 1 and 2 are pressed against the upper and lower engaging edges 15a and 15b by their elastic forces. The support projection 16 is engaged in the support hole 14 from the lower side of the lower blade 2, and the locking projection 9 is engaged in the locking hole 10 from the upper side of the upper blade 1. The engagement between the support hole 14 and the support protrusion 16 constitutes a pivotal fulcrum of the pressing lever 4.

When the pressing lever 4 is pressed down during use, the pressing lever 4 rotates downward about the pivot fulcrums 14, 16 and the locking projection 9 of the pressing lever 4 moves upward. The upper blade 1 is pressed downward by the upper locking edge 15a of the locking hole 15 of the pressing lever 4 while moving through the locking hole 10 of 1. As a result, the lower locking edge 15b of the locking hole 15 of the pressing lever 4 is pressed.
The upper blade 1 approaches the lower blade 2 supported above, and the cutting edges 1a and 2a of the upper and lower blades 1 and 2 contact each other. On the other hand, when the pressing lever 4 is released, the pressing lever 4 is lifted by the elastic force of the upper and lower blades 1 and 2 via the upper engaging edge 15a thereof and moves upward around the pivot fulcrums 14 and 16. It rotates and returns to the original state.

Also in the second embodiment, as in the case of the first embodiment, the number of parts is reduced and the structure is simplified, and the pressing lever 4 is attached to the upper and lower blades 1 and 2 very easily. . Furthermore, the locking recess 7 of the pressing lever 4 when used
It is possible to prevent the upper and lower blades 1 and 2 from being accidentally pulled out.

EFFECTS OF THE INVENTION According to the present invention, since there is no supporting frame unlike the prior art,
The number of parts is reduced and the structure is simplified. Also, upper and lower blades 1,
It is easy to insert 2 into the locking holes 7 and 15 of the pushing lever 4 and insert the turning fulcrums 8 and 16 of the pushing lever 4 into the turning fulcrums 3 and 14 of the lower blade 2. Since the pressing lever 4 can be supported with respect to the upper and lower blades 1 and 2 by a simple operation, the assembling thereof can be made very easy.

Particularly, the engaging portion 9 of the pressing lever 4 and the engaging portion 10 of the upper blade 1
Since the pressing lever 4 does not rotate upward by a certain amount or more due to the engagement with, the upper and lower blades 1 and 2 do not accidentally come out of the locking holes 7 and 15 of the pressing lever 4, and the pressing lever is prevented. 4 and the upper and lower blades 1, 2 can be prevented from coming off.

[Brief description of drawings]

1 to 7 show a first embodiment of the present invention. FIG. 1 is a perspective view of a nail clipper assembling in a use state, FIG. 2 is a partially cutaway side view, and FIG. Assembling perspective view of the nail clipper in use, FIG. 4 is a partially cutaway side view of the same,
5 is a bottom view of the same, FIG. 6 is an enlarged sectional view taken along line XX of FIG. 4, FIG. 7 is an exploded perspective view of a nail clipper, and FIGS. 8 to 10 are second embodiments of the present invention. FIG. 8 is an assembled perspective view of a nail clipper, FIG. 9 is an assembled sectional view of the same, and FIG. 10 is an exploded perspective view of the same. DESCRIPTION OF SYMBOLS 1 ... Upper blade body, 2 ... Lower blade body, 3 ... Support concave part, 4 ... Push operation lever, 4a ... Support part, 6a ... Support arm part, 7 ... Locking concave part as a locking hole, 8 ... Support protrusion, 9: Locking protrusion (locking part), 10
... Locking hole (locking part), 11 ... Pressing member, 14 ... Support hole, 15 ...
Locking hole, 15a ... Upper locking edge, 16 ... Supporting protrusion.

Claims (1)

[Claims] 1. An upper blade body (1) and a lower blade body (2) are fixed to each other so that each of them has elasticity in a direction of approaching and separating, and a pushing operation lever (on the upper blade body (1) ( 4) its support (4
In the nail clipper that is rotatably supported in the vertical direction in a), in the support portion (4a) of the pressing lever (4), the locking holes (7) into which the upper and lower blades (1, 2) are fitted. , 15) are formed, and rotation fulcrums (3, 8, 14, 16) that engage with each other are provided between the support portion (4a) and the lower blade body (2), and the support portion ( Pressing in nail clipper, characterized in that a locking portion (9, 10) is provided between the upper blade body (1) and the upper blade body (1) so as to be able to move relative to each other when the pressing lever (4) rotates. Operate this support structure.