JP5777243B2 - Nail clippers - Google Patents

Description

  The present invention relates to a nail clipper.

  In general, as this type of nail clipper, for example, a configuration as shown in FIG. 15 is known. At the time of assembling the nail clipper of this conventional configuration, the upper blade member 51 and the lower blade member 52 that have been processed into a predetermined shape and subjected to heat treatment are caulked and fixed at the base by welding or screws. Then, the blade portions 51a and 52a of the upper and lower blade members 51 and 52 are bladed to form the upper blade edge 51b and the lower blade edge 52b. At the time of this blade attachment, since the blade portions 51a and 52a of the both blade members 51 and 52 are in contact with each other, the blade portions 51a and 52a are polished simultaneously, so that the upper blade edge 51b and the lower blade edge 52b is in a state of meshing with each other.

  Thereafter, the lower blade member 52 is bent from the vicinity of the caulking portion of the base, and a predetermined gap is provided between the blade edges 51b and 52b of the both blade portions 51a and 52a. And the nail clipper is comprised by the press lever 53 being assembled | attached through the support pin 54 in the position near the blade parts 51a and 52a of the both blade members 51 and 52. FIG.

  In the nail clipper configured as described above, the cutting edge 52b of the lower blade member 52 is separated from the longitudinal axis L of the nail clipper due to the bending process of the lower blade member 52. Further, when the nail clipper is used, the fulcrum position F of the both blade members 51 and 52 is changed by the operation of the pressing lever 53, so that the upper blade edge 51b and the lower blade edge 52b are not engaged with each other. This is referred to as offset, and is a very important element in terms of nail clippers.

  That is, when it is confirmed that both the blade members 51 and 52 are cut open by the operation of the pressing lever 53, as shown in FIG. 16A, the upper blade edge 51b is located inside the lower blade edge 52b, that is, the blade members 51 and 52 It will be in a state of being bitten on the base side. In this case, the offset value OS is referred to as plus. The closer the offset value OS is to zero, the better the sharpness between the two cutting edges 51b and 52b. However, when the offset value OS is zero, the two cutting edges 51b and 52b may collide and be crushed. For this reason, in the conventional nail clipper, the offset value OS is set to be positive, and the two cutting edges 51b and 52b are not engaged with each other.

  By the way, in the nail clipper having the general configuration as described above, particularly in the nail clipper having a small shape size, the thickness of the both blade members 51 and 52 is thin, and the upper blade member 51 is easily bent. Therefore, as shown in FIG. 16B, when the cutting object N having a low hardness such as a fingernail is cut, for example, it is not necessary to strongly press the pressing lever 53. There is no risk of bending greatly. For this reason, the offset value OS is slightly reduced but maintained positive.

  On the other hand, when using a nail clipper having a small shape size and cutting a cutting object N having a high hardness such as a toe nail as shown in FIG. Since it is necessary to press strongly, the upper blade member 51 is bent in a bow shape. Then, since the upper blade edge 51b of the upper blade member 51 is deformed toward the front side in the longitudinal direction of the nail clipper, the sharpness is deteriorated. Moreover, the upper blade edge 51b may protrude outside the lower blade edge 52b after cutting, and the offset value OS may become negative or the offset value OS may become zero. When the offset value OS becomes negative, when the operation of the pressing lever 53 is released, the upper blade edge 51b rubs on the lower blade edge 52b and the offset value OS returns to the positive initial state. , 52b takes great damage.

  For this reason, conventionally, it has been necessary to perform an assortment of products in which the thicknesses of the upper and lower blade members 51 and 52 are changed even in nail cutting with different shape sizes. In these assortment products, it is also necessary to set the offset value OS. That is, since a large-sized nail clipper assumes a cutting object with high hardness, it is necessary to set a large offset value OS. Therefore, there is a problem that the manufacture of nail clippers becomes complicated.

In order to deal with such problems, for example, configurations as disclosed in Patent Documents 1 to 4 have been proposed.
In the conventional configurations described in Patent Document 1 and Patent Document 2, a reinforcing plate is disposed between the upper blade member and the pressing lever. The reinforcing plate suppresses the possibility that the upper blade member is bent in a bow shape when the pressing lever is pressed.

  Further, in the conventional configuration described in Patent Document 3, reinforcing ribs are integrally bent at the side ends of the upper blade member and the lower blade member. The reinforcing ribs prevent the upper blade member from being bent in a bow shape during the pressing operation of the pressing lever.

  Further, in the conventional configuration described in Patent Document 4, the elastic portion is formed so as to have elasticity by bending upward at the base portion of the upper blade member. A spring for biasing the two blade members in a direction to separate them is interposed between the tip portions of the upper blade member and the lower blade member. When the pressing lever is pressed, the base side of the upper blade member starts to bend with the elastic portion as the center of rotation, and the base side deflection of the upper blade member is gradually extended by the biasing force of the spring. . As a result, the upper blade member is moved downward along a locus close to a linear motion without being circularly moved so that the upper blade edge is engaged with the lower blade edge toward the base side, that is, the offset amount is engaged in a plus state. It has become.

Japanese Utility Model Publication No. 5-68409 JP 2001-46142 A JP-T-2006-509611 JP-A-7-163417

However, these conventional configurations have the following problems.
In the conventional configurations described in Patent Document 1 and Patent Document 2, the reinforcing plate is disposed in an upwardly inclined state from the base portion of the upper blade member toward the blade portion along the upper surface of the upper blade member. For this reason, when the pressing lever is pressed, the upper blade member is rotated downward about the fulcrum on the base side from the inclined state of the front rising integrally with the reinforcing plate. Therefore, there is a possibility that the upper cutting edge meshes with the lower cutting edge due to the arc motion, and the offset value approaches minus.

  Similarly, in the conventional configuration described in Patent Document 3, when the pressing lever is pressed, the upper blade member is rotated around the fulcrum on the base side from the upwardly inclined state, and the upper blade tip is moved by an arc motion. Since it meshes with the lower cutting edge, the offset value may approach minus.

  Furthermore, in the conventional configuration described in Patent Document 4, during the pressing operation of the pressing lever, the upper blade member is caused to move circularly around the elastic portion on the base side, and is gradually extended by the urging force of the spring to alleviate it. The upper blade member must be adjusted so that it is moved downward along a locus close to linear motion. For this reason, it is necessary to perform severe alignment of the upper blade edge and the lower blade edge when manufacturing the nail clipper, which causes a problem that the manufacturing becomes complicated.

  The present invention has been made paying attention to such problems existing in the prior art. The purpose of the present invention is to provide a nail clipper that can be used without damaging the cutting edge while maintaining sharpness even when cutting objects having different hardnesses.

In order to achieve the above object, the present invention includes an upper blade member having a blade portion having an upper blade edge, a lower blade member having a base portion connected to the upper blade member and having a lower blade edge, A nail clipper provided with a pressing lever that is connected to a support pin that penetrates the upper blade member and the lower blade member and presses the upper blade member to engage the upper blade edge and the lower blade edge. Is formed with a flat portion at least at a portion that penetrates the support pin, and a bent portion is formed on the base side of the flat portion,
Between the upper blade member and the pressing lever, there is a pressing auxiliary member provided at the tip with a pressing portion that is pressed by the operation of the pressing lever and presses the proximal end of the upper blade tip of the upper blade member. And the pressing assist member is attached to the base portion of the upper blade member in a hip state in which the pressing auxiliary member is parallel to the flat portion of the lower blade member or is raised toward the base side from the parallel state, and the pressing lever When the is pressed, the upper blade edge is engaged with the lower blade edge in an offset state toward the base side.

  Therefore, in the nail clipper according to the present invention, when the pressing lever is pressed, the pressing auxiliary member is attached to the base portion of the upper blade member from the state parallel to the flat portion of the lower blade member or the hip-up state. It is pushed and rotated around the center. Due to the pressing rotation of the pressing auxiliary member, the upper blade edge of the upper blade member is pressed through the pressing portion, and the upper blade edge rotates downward toward the inner side of the lower blade edge of the lower blade member, that is, the base side of the lower blade member. Moved. Then, the cutting object such as a nail is cut by engaging both the upper and lower cutting edges. For this reason, even if the offset value between the cutting edges at the start of the operation of the pressing lever is set to a plus close to zero, the offset value increases as the cutting edge of the cutting object advances as the upper cutting edge approaches the lower cutting edge. Gradually move to the side. Therefore, it can be used for cutting cutting objects having different hardnesses without damaging the cutting edge while maintaining sharpness.

  In the above configuration, the upper blade member and the lower blade member are integrally connected through a bent portion of a base portion, the blade portion having the upper blade tip is provided on the upper blade member, and the pressing auxiliary member It is good to comprise so that the press part of this may be arrange | positioned so that the base end of the said blade part can be pressed.

The said structure WHEREIN: It is good to set it as the structure connected integrally so that the said support pin may make an obtuse angle with respect to a press lever.
In the above configuration, the support pin is swingably supported on the lower surface of the lower blade member at the lower end, and penetrated through the upper blade member in the longitudinal direction at the upper end so as to be movable in the longitudinal direction. The upper surface may be configured to be provided with a cam portion that comes into contact with the pressing lever and presses the pressing auxiliary member downward when the pressing lever is pressed.

The said structure WHEREIN: The said cam part is good to comprise from a curved surface.
The said structure WHEREIN: The said upper blade member and a lower blade member are comprised from another member, and it is good to comprise so that those base parts may be connected mutually.

  As described above, according to the present invention, an effect of being able to be used without damaging the cutting edge while maintaining sharpness even when cutting a cutting object having different hardness is exhibited.

The perspective view which shows the nail clipper of 1st Embodiment. The top view of the nail clipper of FIG. Sectional drawing in the 3-3 line of FIG. Sectional drawing in the 4-4 line | wire of FIG. FIG. 5 is an enlarged sectional view taken along line 5-5 in FIG. The disassembled perspective view of the nail clipper of FIG. Sectional drawing which shows the cutting | disconnection operation state of the nail clipper. The principal part side view which expands and shows the blade edge | tip part of the nail clipper in the state of FIG. The perspective view which shows the accommodation state of the nail clipper. Sectional drawing of a nail clipper in the same storage state. Sectional drawing which shows the nail clipper of 2nd Embodiment. FIG. 12 is an enlarged cross-sectional view taken along line 12-12 of FIG. Sectional drawing which shows the cutting | disconnection operation state of the nail clipper of FIG. Sectional drawing which shows the storage state of the nail clipper. Sectional drawing which shows the conventional general nail clipper. (A)-(c) is a principal part expanded side view which shows the meshing state from which the blade edge | tip part differed at the time of the cutting | disconnection operation | movement of the nail clipper of FIG.

(First embodiment)
Below, 1st Embodiment of the nail clipper which materialized this invention is described according to FIGS.

  As shown in FIGS. 1 to 3, in the nail clipper of this embodiment, the upper blade member 21 and the lower blade member 22 are integrally connected through a substantially U-shaped bent portion 23 of the base portion. Yes. In addition, the structure of each part formed in the upper blade member 21 and the lower blade member 22 itself to be described below is given the same name ("up" or "down", except for a locking part 27 described later. In the following description, for the sake of convenience of explanation, they are provided in a vertically symmetrical manner, with respect to a virtual plane passing through the locking portion 27 as a reference. The description that there is is omitted.

  A blade portion 21 a having an upper blade tip 21 b is formed at the tip of the upper blade member 21, and a blade portion 22 a having a lower blade tip 22 b is formed at the tip of the lower blade member 22. The upper blade edge 21b and the lower blade edge 22b are formed by bending the upper blade member 21 and the lower blade member 22 into a U-shape at the bent portion 23 of the base so as to extend substantially in parallel, and then the upper and lower blade portions 21a and 22a are opposed to each other. It is formed by abutting and polishing simultaneously. Therefore, when the cutting edges 21b and 22b are formed, the offset value OS between the cutting edges 21b and 22b is zero.

  As shown in FIGS. 3 and 6, flat portions 21c and 22c are formed between the blade portions 21a and 22a and the bent portion 23 of the upper blade member 21 and the lower blade member 22, respectively. In the vicinity of the blade portions 21a and 22a of the upper blade member 21 and the lower blade member 22, a through hole 24 is formed in the center portion in the width direction of each flat portion 21c and 22c. The through-hole 24 includes a large-diameter circular hole portion 24a and a long hole portion 24b extending from the circular hole portion 24a toward the blade portions 21a and 22a. A pair of concave grooves 25A and 25B extending in the width direction are formed in the longitudinal direction of the upper blade member 21 and the lower blade member 22 on the outer surfaces of the flat portions 21c and 22c on both sides of the long hole portion 24b of each through hole 24. It is formed at intervals. The bent portions 23 on the base side of the upper blade member 21 and the lower blade member 22 are formed with through holes 26A and 26B, respectively, and a locking portion 27 extending in the width direction so as to divide the through holes 26A and 26B. Is provided.

  As shown in FIGS. 1 to 3 and 6, a pressing lever 28 is mounted on the upper blade member 21 through a support pin 29 so as to be swingable in the vertical direction. The support pin 29 is integrally formed so as to form an obtuse angle with respect to the lower surface of the front end of the pressing lever 28. On both sides of the lower end of the support pin 29, shaft portions 29a are projected in the width direction. As shown in FIGS. 3 and 4, the support pin 29 penetrates through the circular hole 24a of the through hole 24 of the upper blade member 21 and the lower blade member 22 so as to be movable in the longitudinal direction in the long hole portion 24b. At the same time, the shaft portion 29a at the lower end is engaged and supported so as to be swingable with respect to the concave groove 25A on the blade portion 22a side on the lower surface of the lower blade member 22.

  As shown in FIGS. 1, 3, 5, and 6, a pressing auxiliary member 30 is interposed between the upper blade member 21 and the pressing lever 28 so as to be relatively movable in the longitudinal direction of the upper blade member 21. Has been. The pressing assisting member 30 includes an upper wall portion 30 a that covers the upper surface of the upper blade member 21 and a peripheral wall portion 30 b that covers both sides and the base portion of the upper blade member 21 so as to also serve as an upper cover. At the distal end of the upper wall portion 30a of the pressing assist member 30, a pressing portion 30c corresponding to the base end of the blade portion 21a of the upper blade member 21 so as to be pressable is provided. As shown in FIG. 7, when the pressing lever 28 is pressed, the upper cutting edge 21b of the upper blade member 21 is pressed by the pressing portion 30c of the pressing auxiliary member 30, and the upper cutting edge 21b and the lower cutting edge 22b Are engaged with each other.

  As shown in FIGS. 3, 4, and 6, the upper wall portion 30 a of the auxiliary pressing member 30 is close to the pressing portion 30 c and corresponds to the through hole 24 on the upper blade member 21 and the lower blade member 22. A through hole 31 having a circular hole 31a and a long hole 31b is formed. As shown in FIGS. 3 to 6, an attachment piece 32 that can be locked to the locking portion 27 of the base portion of the upper blade member 21 and the lower blade member 22 is bent and formed at the base portion of the peripheral wall portion 30 b of the pressing assist member 30. ing. And the support pin 29 is penetrated by the through-hole 24 of the upper blade member 21 and the lower blade member 22 through the through-hole 31 of the press auxiliary member 30, and the attachment piece 32 of the press auxiliary member 30 is the upper blade member 21 and The upper blade member 21 and the lower blade member 22 are engaged and attached to the engaging portion 27 of the lower blade member 22 so as to be relatively movable in the longitudinal direction. As a result, as shown in FIG. 3, the upper wall portion 30 a of the pressing assist member 30 is arranged in a parallel state with respect to the flat portion 22 c of the lower blade member 22 or in a hip-up state in which the base side is raised from the parallel state. ing.

  In addition, when the pressing lever 28 is operated in the attached state of the pressing auxiliary member 30 and the pressing lever 28, the offset value OS between the upper and lower cutting edges 21b and 22b is set to be a plus close to zero. .

  As shown in FIGS. 3, 4, and 6, a pair of cam portions 33 project from the upper surface of the upper wall portion 30 a of the pressing assist member 30 at both side positions in the width direction of the through hole 31. This cam part 33 is comprised from curved surfaces, such as a circular arc curved surface and an elliptical curved surface. During the pressing operation of the pressing lever 28 in use, the leading edge of the pressing lever 28 is slidably engaged with the cam portion 33, and the pressing assist member 30 is pressed downward by the cam action of the cam portion 33. It has become so.

  As shown in FIGS. 3, 6, 9, and 10, at the position between the long hole portion 31 b of the through hole 31 and the cam portions 33 on the lower surface of the upper wall portion 30 a of the pressing assist member 30, A pair of positioning protrusions 34 are formed. When the nail clipper is normally used, as shown in FIG. 3, the positioning protrusion 34 is engaged with the concave groove 25 </ b> B on the base side on the upper blade member 21, so that the upper blade member 21 and the lower blade member are engaged. 22 is positioned and held in a state in which the blade portions 21a and 22a are projected from the front end edge of the upper wall portion 30a of the pressing assist member 30. The state of protruding from the front end edge of the upper wall portion 30a of the pressing assist member 30 is a state in which nail cutting can be used.

  On the other hand, when the nail clipper is not used, that is, when it is stored, the pressure lever 28 is pulled to the base side of the upper blade member 21 and the lower blade member 22 and is pressed and rotated to the position where it contacts the upper surface of the pressing auxiliary member 30. 9 and 10, the upper blade member 21 and the lower blade member 22 move to a state in which the blade portions 21 a and 22 a are immersed from the front end edge of the upper wall portion 30 a of the pressing auxiliary member 30. Is done. At this time, the positioning projection 34 is detached from the groove 25B on the base side on the upper blade member 21 and engaged with the groove 25A on the blade 21a side, so that the upper blade member 21 and the lower blade member 22 are engaged. The blade portions 21a and 22a are positioned and held in an immersed state.

  As shown in FIGS. 1, 3, 5, and 6, a lower cover 35 is attached to the lower portion of the lower blade member 22. The lower cover 35 is provided with a lower wall portion 35 a that covers the lower surface of the lower blade member 22, and a peripheral wall portion 35 b that covers both sides and the base of the lower blade member 22. A concave portion 36 for covering the shaft portion 29 a at the lower end of the support pin 29 is formed on the inner surface on the front end side of the lower wall portion 35 a of the lower cover 35. A pair of locking claws 37 are formed on the inner surface of the lower wall portion 35 a of the lower cover 35 so as to protrude at intervals in the width direction and the longitudinal direction of the lower cover 35. Then, as shown in FIG. 5, when these locking claws 37 are locked to both side edges of the lower blade member 22, the lower cover 35 is longitudinal with respect to the lower blade member 22, that is, the flat portion 22 c. It is attached so that relative movement is possible.

(Operation of the first embodiment)
Next, the operation of the nail clipper configured as described above will be described.
Now, when this nail clipper is used to cut the cutting object N such as a nail, the blade portions 21a and 22a of the upper blade member 21 and the lower blade member 22 are pressed as shown in FIGS. In a state where the nail cutters protruding from the tips of the auxiliary member 30 and the lower cover 35 can be used, after the cutting object N is disposed between the upper and lower cutting edges 21b and 22b, the pressing lever 28 is pressed. Then, the pressing lever 28 is swung around the shaft portion 29 a at the lower end of the support pin 29, and the lower surface of the distal end of the pressing lever 28 comes into contact with the cam portion 33 on the pressing auxiliary member 30, via the cam portion 33. Thus, the pressing auxiliary member 30 is pressed downward. At this time, the upper wall portion 30a of the pressing assist member 30 is arranged in a parallel state with respect to the flat portion 22c of the lower blade member 22, or in a hip-up state in which the base side is raised from the parallel state. For this reason, the pressing assisting member 30 is pressed and rotated from the parallel state or the hip-up state around the engagement / attachment portion between the attachment piece 32 and the locking portion 27 on the base side.

  As described above, when the pressing assist member 30 is pressed and rotated, the base end of the blade portion 21a of the upper blade member 21 is pressed via the pressing portion 30c at the distal end of the pressing assist member 30, and the upper blade tip 21b is lowered. The blade member 22 is rotated downwardly toward the inside of the lower blade edge 22b of the blade member 22, that is, toward the base side of the lower blade member 22. For this reason, in the state at the time of the operation start of the press lever 28, even if the offset value OS between the two cutting edges 21b and 22b is set to a plus close to zero, the offset value is increased as the upper cutting edge 21b approaches the lower cutting edge 22b. It gradually shifts to the positive side where the OS increases.

  Further, during the pressing operation of the pressing lever 28, the shaft portion 29a at the lower end of the support pin 29 moves in an arc, and the blade portion 22a of the lower blade member 22 is lifted and rotated, so that the upper blade edge 21b also on the lower blade edge 22b side. Similarly to the side, the offset value OS acts to shift to the plus side. Then, as shown in FIGS. 7 and 8, the cutting object N such as a nail is cut by engaging the upper and lower cutting edges 21b and 22b. Therefore, even if the hardness of the cutting object N is different, it is possible to cut without damaging the cutting edges 21b and 22b while maintaining the sharpness.

  Further, when storing the nail clipper, in the state where the nail clipper can be used as shown in FIGS. 1 to 3, the pressure assist member 30 is pulled while pulling the pressing lever 28 toward the base side of the upper blade member 21 and the lower blade member 22. It is pressed and rotated to a position where it comes into contact with the upper surface of the plate. Then, the upper blade member 21 and the lower blade member 22 are moved to the base side with respect to the pressing auxiliary member 30 and the lower cover 35, and as shown in FIGS. 9 and 10, the upper blade member 21 and the lower blade member 22. The blade portions 21 a and 22 a are immersed from the distal ends of the pressing auxiliary member 30 and the lower cover 35. At this time, the positioning protrusion 34 of the auxiliary pressing member 30 is detached from the concave groove 25B on the base portion side on the upper blade member 21 and is engaged with the concave groove 25A on the blade portion 21a side. The blade member 22 is positioned and held in a retracted state in which the blade portions 21a and 22a are immersed.

  Further, when the nail clipper is returned from the retracted state to the usable state, in the retracted state shown in FIGS. 9 and 10, the pressing lever 28 is erected and rotated from the position in contact with the upper surface of the pressing assist member 30. Then, the leading edge of the pressing lever 28 comes into sliding contact with the cam portion 33 on the pressing auxiliary member 30, and the cam action of the cam portion 33 causes the upper blade member 21 and the lower blade member 22 to move to the pressing auxiliary member 30 and the lower cover 35. 1 to 3, the blade portions 21 a and 22 a of the upper blade member 21 and the lower blade member 22 are protruded from the tips of the pressing auxiliary member 30 and the lower cover 35, as shown in FIGS. 1 to 3. The At this time, the positioning projection 34 of the pressing assist member 30 is detached from the groove 25A on the blade 21a side on the upper blade member 21 and engaged with the groove 25B on the base side, whereby the upper blade member 21 and the lower blade The blade member 22 is positioned and held in a usable state in which the blade portions 21a and 22a protrude.

Therefore, according to this embodiment, the following effects can be obtained.
(1) In this nail cutting, the pressing auxiliary member 30 disposed between the upper blade member 21 and the pressing lever 28 is in a parallel state or parallel to the flat portion 22c provided on the lower blade member 22. The upper blade member 21 is attached to the base of the upper blade member 21 so as to be in a hip-up state in which the base side is raised from the state.

  For this reason, when the pressing lever 28 is pressed, the pressing assisting member 30 is in a state parallel to the flat portion 22c of the lower blade member 22 or in a hip-up state, with the mounting portion with respect to the base portion of the upper blade member 21 as the center. Is pressed and rotated. By the pressing rotation of the pressing auxiliary member 30, the upper blade edge 21 b of the upper blade member 21 is pressed via the pressing portion 30 c, and the upper blade edge 21 b is inside the lower blade edge 22 b of the lower blade member 22, that is, the lower blade member 22. It is lowered and turned toward the base side. Then, the cutting object N such as a nail is cut by engaging the upper and lower cutting edges 21b and 22b. For this reason, even if the offset value OS between the cutting edges 21b and 22b at the start of the operation of the pressing lever 28 is set to a plus close to zero, the upper cutting edge 21b approaches the lower cutting edge 22b and the cutting object N is cut. As it progresses, it gradually shifts to the plus side where the offset value OS increases. Therefore, even when cutting the cutting object N having different hardness, it can be used without damaging the blade edges 21b and 22b while maintaining the sharpness.

  (2) In this nail cutting, the upper blade member 21 and the lower blade member 22 are integrally connected through a bent portion 23 of the base portion. The upper blade member 21 is provided with a blade portion 21a having an upper blade tip 21b. And the press part 30c of the said press auxiliary member 30 is arrange | positioned so that the base end of the blade part 21a of the upper blade member 21 may be pressed. For this reason, it is not necessary to connect and fix the upper blade member 21 and the lower blade member 22 by caulking or the like at the base portion, and the structure and assembly can be simplified. Moreover, since the base end of the blade part 21a of the upper blade member 21 can be directly pressed by the pressing part 30c of the pressing auxiliary member 30, the upper blade edge 21b is prevented from being lowered toward the zero direction of the offset value OS. Thus, the offset value OS can be guided to be lowered in the positive direction.

  (3) In this nail cutting, the support pin 29 that supports the pressing lever 28 is integrally connected so as to form an obtuse angle with respect to the pressing lever 28, and is attached to the lower surface of the lower blade member 22 at the lower shaft portion 29 a. The upper blade member 21 is supported at the upper end so as to be able to swing, and is movably penetrated in the longitudinal direction. In addition, a cam portion 33 is provided on the upper surface of the pressing assisting member 30 to abut against the pressing lever 28 and press the pressing assisting member 30 downward when the pressing lever 28 is pressed.

  For this reason, the support pin 29 can be formed integrally with the pressing lever 28, and the structure and assembly can be simplified. Further, since the shaft portion 29a at the lower end of the support pin 29 is swingably supported on the lower surface of the lower blade member 22, the shaft portion 29a of the support pin 29 moves in an arc when the pressing lever 28 is pressed, The lower blade member 22 is lifted and rotated. Therefore, the offset value OS can be shifted to the plus side on the lower blade edge 22b side as well as the upper blade edge 21b side. Furthermore, since the cam portion 33 is provided on the upper surface of the pressing assist member 30, the pressing assist member 30 can be strongly pressed and rotated via the cam portion 33 by a light pressing operation of the pressing lever 28.

  (4) In this nail clipper, the cam portion 33 is formed of a curved surface. For this reason, at the time of pressing operation of the pressing lever 28, the pressing lever 28 can be smoothly slidably brought into contact with the curved cam portion 33, and the pressing lever 28 can be easily operated.

(Second Embodiment)
Next, a second embodiment of the nail clipper embodying the present invention will be described with a focus on differences from the first embodiment.

  Now, in this 2nd Embodiment, as shown in FIGS. 11-14, the upper blade member 21 and the lower blade member 22 are comprised from another member. The base portions of the upper blade member 21 and the lower blade member 22 are connected and fixed to each other by caulking of the caulking pin 41. A bent portion 42 is formed at a position closer to the blade portion 22a than an intermediate portion in the longitudinal direction of the lower blade member 22, and a portion between the bent portion 42 and the blade portion 22a is a flat portion 22c. .

  Further, in this embodiment, the support pin 29 is constituted by a member separate from the pressing lever 28. The support pins 29 are rotatably supported through the flat portions 21c and 22c of the upper blade member 21 and the lower blade member 22 and the through holes 24 and 31 provided in the upper wall portion 30a of the pressing auxiliary member 30. At the same time, a pressing lever 28 is attached to the upper end of the support pin 29 via an attachment pin 43 so as to be able to rotate and rotate. Further, a cam portion 33 having a substantially triangular mountain shape on the side surface is formed on the lower surface of the distal end of the pressing lever 28.

  Further, in this embodiment, the base portion of the upper wall portion 30 a of the pressing assist member 30 is fixed by caulking to the upper end of the caulking pin 41. And, by the upper end of the caulking pin 41, the base portion of the upper wall portion 30a is spaced upward from the base portion of the upper blade member 21, so that the pressing auxiliary member 30 is attached in the same manner as in the first embodiment. The upper wall portion 30a of the pressing assisting member 30 is configured to be in a parallel state with respect to the flat portion 22c of the lower blade member 22, or a hip-up state in which the base side is raised from the parallel state.

(Operation of Second Embodiment)
Therefore, also in the nail clipper of this embodiment, when the cutting object N such as a nail is cut, when the pressing lever 28 is pressed in the usable state shown in FIG. Or it is pushed and rotated from the hip-up state. Thereby, the blade portion 21a of the upper blade member 21 is pressed through the pressing portion 30c of the pressing auxiliary member 30, and the upper blade edge 21b is lowered and turned toward the inner side of the lower blade edge 22b of the lower blade member 22. For this reason, as in the case of the first embodiment, the offset value OS between the two cutting edges 21b and 22b gradually increases toward the plus side as the upper cutting edge 21b approaches the lower cutting edge 22b as the pressing lever 28 is pressed. The cutting target N is cut as shown in FIG.

  On the other hand, when storing the nail clipper, from the usable state shown in FIG. 11, the pressing lever 28 is moved around the mounting pin 43 toward the blade portions 21 a and 22 a of the upper blade member 21 and the lower blade member 22. After the reverse rotation, the pressing lever 28 is rotated together with the support pin 29 to the base side of the upper blade member 21 and the lower blade member 22. Then, as shown in FIG. 14, the pressing lever 28 is disposed in the retracted state joined to the upper surface of the pressing assisting member 30.

Therefore, according to the second embodiment, in addition to the effect described in (1) in the first embodiment, the following effect can be obtained.
(5) In this nail cutting, the upper blade member 21 and the lower blade member 22 are formed of separate members, and their bases are connected to each other. For this reason, it can materialize, without changing a structure largely with respect to the conventional nail clipper which comprised upper blade member 21 and lower blade member 22 by another member.

(Example of change)
In addition, this embodiment can also be changed and embodied as follows.
In both the embodiments, the pressing auxiliary member 30 is provided as a separate member without being used as the upper cover.

In the first embodiment, the cam portion 33 on the pressing assist member 30 is formed in a different shape such as a side polygon.
In the second embodiment, the base portions of the upper blade member 21 and the lower blade member 22 are connected with different fixing structures such as welding.

  In the first embodiment, instead of the upper blade member 21 and the lower blade member 22 moving the blade portions 21a, 22a from the tip edge of the upper wall portion 30a of the pressing auxiliary member 30, the blade portion The positional relationship of the engagement between the positioning projection 34 and the groove 25A is set and held so that 21a and 22a are substantially flush with the tip edge of the upper wall 30a of the pressing assist member 30.

21 ... Upper blade member, 21a ... Blade portion, 21b ... Upper blade tip, 22 ... Lower blade member,
22b ... lower blade edge, 22c ... flat part, 23 ... bent part, 24 ... through hole,
25A, 25B ... concave groove, 27 ... locking portion, 28 ... pressing lever,
29 ... Support pin, 29a ... Shaft part, 30 ... Press auxiliary member, 30c ... Press part,
31 ... Through hole, 32 ... Mounting piece, 33 ... Cam part, 41 ... Caulking pin,
42 ... bent portion, N ... cutting object, OS ... offset value.

Claims (5)

An upper blade member having a blade portion having an upper blade edge, a lower blade member having a lower blade edge with a base portion connected to the upper blade member, and a support pin penetrating the upper blade member and the lower blade member In a nail clipper comprising a pressing lever that is connected and presses the upper blade member to engage the upper blade edge and the lower blade edge,
In the lower blade member, a flat portion is formed at least at a portion that allows the support pin to penetrate, and a bent portion is formed on the base side of the flat portion,
Between the upper blade member and the pressing lever, there is a pressing auxiliary member provided at the tip with a pressing portion that is pressed by the operation of the pressing lever and presses the proximal end of the upper blade tip of the upper blade member. Arranged,
The pressing auxiliary member is attached to the base of the upper blade member in a hip-up state in which the base side is raised from the parallel state or the parallel state with respect to the flat portion of the lower blade member,
A nail clipper characterized in that when the pressing lever is pressed, the upper blade edge engages with the lower blade edge in an offset state toward the base side. The upper blade member and the lower blade member are integrally connected via a bent portion of a base portion, the upper blade member is provided with a blade portion having the upper blade tip, and the pressing portion of the pressing auxiliary member is The nail clipper according to claim 1, wherein the base end of the blade portion is disposed so as to be pressed. The support pins are integrally connected so as to form an obtuse angle with respect to the pressing lever;
The support pin is swingably supported on the lower surface of the lower blade member at the lower end, and is penetrated through the upper blade member so as to be movable in the longitudinal direction at the upper end.
The upper surface of the pressing assist member is provided with a cam portion that contacts the pressing lever and presses the pressing assist member downward when the pressing lever is pressed. Nail clippers as described in. The nail clipper according to claim 3, wherein the cam portion is a curved surface. The nail clipper according to claim 1, wherein the upper blade member and the lower blade member are made of different members, and base portions thereof are connected to each other.

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