JP5627143B2 - Cat nail sharpener - Google Patents

Description

  The present invention relates to a cat nail sharpener used for cat nail sharpening.

  In general, cats have a habit of sharpening their nails and may scratch and damage home pillars, walls, floors, furniture, rugs, and the like. As a cat nail sharpener for avoiding such damage, a nail sharpener formed by stacking corrugated cardboard pieces is known as described in, for example, Utility Model Registration No. 3173403. In this nail sharpening device, the nail sharpening portion is detachable with respect to the concave portion provided in the main body portion. This nail sharpener can be used for a long period of time by replacing the nail sharpening part damaged by the cat's nail sharpening.

Utility Model Registration No. 3173403

  By the way, in such a nail sharpening device, depending on how the nail sharpening portion is attached to or detached from the main body, it may be difficult to attach the nail sharpening portion during replacement, or the nail sharpening portion may be easily detached during nail sharpening. .

  Therefore, the present invention aims to provide a cat nail sharpener that can easily attach the nail sharpening part at the time of replacement and prevent the nail sharpening part from coming off at the time of the nail sharpening with a simple structure. Is.

  The nail sharpening device for cats according to the present invention has a nail sharpening portion that is detachable with respect to a recess provided in the main body portion. In the claw sharpener for cats, the nail sharpening part is formed by joining a plurality of cardboard pieces stacked without being joined to each other to the surface of a plate-like member extending in the overlapping direction, and the recess has an opening length longer than the bottom length. The opening length is shorter than the length of the nail sharpening portion in the overlapping direction.

  In the cat nail sharpener according to the present invention, the nail sharpening portion is formed by joining a plurality of corrugated cardboard pieces stacked without being joined to each other to the surface of a plate-like member extending in the overlapping direction. By bending the member, the nail sharpening portion can be easily bent along the overlapping direction.

  The recess has an opening length shorter than the bottom surface length and an opening length shorter than the length of the nail sharpening portion in the overlapping direction. For this reason, the nail sharpening part can be easily moved into the recess and attached by bending the nail sharpening part along the overlapping direction so as to be shorter than the opening length. In addition, the nail sharpening portion that has entered the recess is released from the bent state and restored longer than the opening length, so that the nail sharpening portion can be easily removed from the recess.

  According to the present invention, it is possible to provide a cat nail sharpener that can easily attach the nail sharpening portion at the time of replacement and prevent the nail sharpening portion from coming off at the time of nail sharpening with a simple structure. it can.

It is a perspective view which shows the claw sharpener for cats concerning embodiment of this invention. It is a disassembled perspective view of the nail sharpener shown in FIG. It is sectional drawing along the III-III line of FIG. It is sectional drawing along the IV-IV line of FIG. It is sectional drawing which shows the attachment procedure of a nail sharpening part. It is sectional drawing which shows the force which acts on a nail sharpening surface at the time of nail sharpening.

  Hereinafter, a cat nail sharpener according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.

  Below, the structure of the claw sharpener for cats which concerns on embodiment of this invention with reference to FIGS. 1-4 is demonstrated. FIG. 1 is a perspective view showing a cat nail sharpener according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the nail sharpener shown in FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2, and FIG. 4 is a cross-sectional view taken along line IV-IV in FIG.

  The nail sharpener is used for sharpening a cat's nail. As shown in FIGS. 1 to 4, the nail sharpener is configured such that the nail sharpening portion 30 is detachable with respect to the concave portion 20 provided in the main body portion 10.

  The nail sharpening part 30 is formed by stacking a plurality of cardboard pieces. The length of the side parallel to the core wave of the cardboard is called the paper width, and the length of the side perpendicular to the wave is called the flow.

  First, the main body 10 will be described. Hereinafter, the surface of the main body 10 on which the concave portion 20 is provided is referred to as “front surface”, and the surface on the opposite side is referred to as “back surface”. In addition, a direction in which the nail sharpening portion 30 attached to the recess 20 in the main body 10 crosses is referred to as a “short direction”, and a direction in which the main body portion 10 extends perpendicularly thereto is referred to as a “longitudinal direction”.

  Two contact portions 11 are provided on both ends of the main body portion 10 in the longitudinal direction on the back surface of the main body portion 10. The abutting portion 11 is formed as a portion that abuts on an installation surface such as a floor surface or a wall surface. For example, both of the two contact portions 11 are installed on the floor surface, one is installed on the floor surface, the other is installed on the wall surface, one is installed on the high floor surface, and the other is installed on the lower floor surface.

  Two cutout portions 12 are provided between the two contact portions 11 on the back surface of the main body portion 10. The notch portion 12 is formed by notching or recessing the back surface of the main body portion 10 to the front surface side. The notch portion 12 may be formed as a portion that is gripped when the main body portion 10 or the nail sharpener is carried, or may be formed as a space where the cat can hide. The number of notches 12 is not limited to the above example.

  A hollow portion 13 is provided in the central portion of the main body 10 at the center in the longitudinal direction of the main body 10. At least one end of the cavity 13 is open to the outside of the main body 10, for example, the side surface of the main body 10 in the short direction. The cavity 13 is formed as a space in which a heat source device such as a hot water bottle, an electric kettle, or a heater is disposed. In addition, the number of the cavity parts 13 is not limited to the said example.

  The main body 10 is formed by the main body member 14 and the coupling member 15. The main body member 14 is formed by overlapping a plurality of cardboard pieces in the short direction of the main body portion 10. The corrugated cardboard piece is formed by cutting the corrugated cardboard into a shape corresponding to the cross-sectional shape of the main body 10 in the longitudinal direction. The main body member 14 may be formed by combining corrugated cardboard pieces having different shapes of the cut surfaces (the magnitude of the core wave, the direction of the cut surfaces, and the like). The coupling member 15 is, for example, a rod-shaped member, and is formed by stacking and bonding a plurality of strip-shaped cardboard pieces.

  The main body member 14 is provided with a groove 16 into which the coupling member 15 is fitted. In the present embodiment, three coupling members 15 are fitted into the three grooves 16 provided on the surface of the main body member 14, and the two grooves 16 provided on the back surface of the main body member 14 so as to correspond to the contact portion 11. Two coupling members 15 are fitted. For example, the coupling member 15 may be formed to have a slightly larger cross section than the groove 16 and may be press-fitted into the groove 16 or may be inserted into the groove 16 via an adhesive. Thereby, the main-body part 10 can be formed easily, without joining the surfaces of a cardboard piece. The number and arrangement of the coupling members 15 are not limited to the above example.

  Three concave portions 20 are provided on the surface of the main body 10 side by side in the longitudinal direction of the main body 10. The surface of the main body portion 10 provided with the concave portion 20 is curved in the longitudinal direction of the main body portion 10 so that the portion where the concave portion 20 is provided is recessed from other portions. The three recesses 20 are formed by partitioning the recess of the main body 20 with two partition members, for example, the two coupling members 15 described above. The recess 20 is formed as a space for accommodating the nail sharpening part 30. In addition, the number of the recessed parts 20 is not limited to the said example.

  As shown in FIG. 3, the recess 20 is formed such that the opening length L1 is shorter than the bottom surface length L2 and the opening length L1 is shorter than the length L3 of the nail sharpening portion 30. The opening length L1 is a length obtained by connecting the upper ends of the recesses 20 according to the shape of the bottom surface, and the bottom surface length L2 is a length obtained by connecting the lower ends of the recesses 20 along the bottom surface. Both the opening length L1 and the bottom surface length L2 are lengths in a direction coinciding with the overlapping direction D of the cardboard pieces 33a of the nail sharpening portion 30 attached to the recess 20. The length L3 of the nail sharpening portion 30 is the length in the overlapping direction D of the cardboard pieces 33a.

  The concave portion 20 includes a first concave portion 21 provided in a central portion in the short direction of the main body portion 10 and a second concave portion provided in both side portions in the short direction of the main body portion 10 and deeper than the first concave portion 21. 22. The second concave portion 22 is formed as an engaged portion to which a part of the nail sharpening portion 30 attached to the concave portion 20 is engaged.

  The recess 20 has a third recess 23 that is provided in the second recess 22 and deeper than the second recess 22. The 3rd recessed part 23 is exposed to the side surface of the main-body part 10 in the state in which the nail sharpening part 30 was attached to the recessed part 20 (refer FIG. 1). The third concave portion 23 is formed as an insertion portion into which a finger is inserted when removing the nail sharpening portion 30 attached to the concave portion 20.

  Next, the nail sharpening unit 30 will be described. In the following, in the nail sharpening part 30, the surface that becomes the nail sharpening surface 31 is referred to as "front surface", and the surface opposite to this is referred to as "back surface". Further, the direction corresponding to the short direction of the main body 10 in the nail sharpening part 30 is referred to as “short direction”, and the direction in which the nail sharpening part 30 extends perpendicular to this is referred to as “longitudinal direction”.

  On the back surface of the nail sharpening portion 30, a plate-like member 32 is provided in the center portion in the short direction of the nail sharpening portion 30. The plate-like member 32 is a flexible member such as a cardboard piece, a synthetic resin sheet, a metal sheet, a rubber sheet, or a plate piece.

  A nail sharpening member 33 that forms a nail sharpening surface 31 is provided on the surface of the nail sharpening portion 30. The nail sharpening member 33 is formed by stacking a plurality of cardboard pieces 33a (see FIG. 3). The cardboard piece 33 a has a shape corresponding to the cross-sectional shape of the nail sharpening member 33 in the short direction. The nail sharpening member 33 is formed at a height substantially the same as the depth of the recess 20 so as to cover the entire recess 20.

  In the corrugated cardboard piece 33a, a surface that intersects the paper width direction of the corrugated cardboard is exposed on one end surface forming the nail sharpening surface 31 and the other end surface opposite to the end surface. Thereby, since the corrugated core corrugation appears on the surface of the nail sharpening member 33, the nail sharpening by the nail sharpening surface 31 is surely performed.

  The nail sharpening portion 30 is formed by joining a plurality of corrugated cardboard pieces 33a that are stacked without being joined to each other to the surface of the plate-like member 32 extending in the overlapping direction D (see FIG. 3). Here, “not joined to each other” means that the paper surfaces (surfaces orthogonal to the overlapping direction D) of the cardboard pieces 33a are not substantially joined together. Specifically, the nail sharpening portion 30 is formed by bonding the lower end surfaces of the plurality of cardboard pieces 33 a to the surface of the plate-like member 32 using an adhesive, a synthetic resin, or the like.

  On the back surface of the nail sharpening portion 30, two engaging portions 34 are provided on both sides in the short direction of the nail sharpening portion 30. The engaging portion 34 is formed by projecting a part of the nail sharpening member 33 downward from the arrangement plane of the plate-like member 32. The engaging portion 34 is formed as a portion that engages with the second concave portion 22 of the main body portion 10, that is, the engaged portion.

  The engaging portion 34 is formed to be slightly wider (L4> L5) than the second concave portion 22 in the short direction of the nail sharpening portion 30 (see FIG. 4). A wedge-shaped cut 34 a is provided at the boundary between the engaging portion 34 and the plate-like member 32 toward the outer side in the short direction of the nail sharpening portion 30. In a state where the nail sharpening portion 30 is attached to the recess 20 by the notch 34 a, a biasing force (engagement force) is applied from the engagement portion 34 to the main body portion 10 in the short direction of the nail sharpening portion 30.

  An opening 32a is provided in the plate-like member 32 of the nail sharpening portion 30 located at the longitudinal center of the main body portion 10 (see FIGS. 3 and 4). The opening 32a allows one end surface forming the nail sharpening surface 31 to communicate with an end surface opposite to the end surface. Thereby, the cavity 13 and the nail sharpening surface 31 communicate with each other through the core cross section of the cardboard piece above the cavity 13, the opening 32 a, and the core cross section of the cardboard piece above the opening 32 a. To do. Two or more openings 32a may be provided. The opening 32a transmits air heated by the heat source device disposed in the cavity 13 to the nail sharpening surface 31 to form a warm space, thereby encouraging the cat to access the nail sharpening surface 31. it can.

  The length L3 of the nail sharpening portion 30 is longer than the opening length L1 of the recess 20 in a state where the plate-like member 32 is not bent (see FIG. 3). The length L3 of the nail sharpening portion 30 is the length in the overlapping direction D of the cardboard pieces 33a. The nail sharpening portion 30 enters the recess 20 in a state of being bent shorter than the opening length L1, and is engaged and attached to the recess 20 in a state of being released from the bending state and restored longer than the opening length L1.

  Below, with reference to FIG.5 and FIG.6, the effect | action of the claw sharpener for cats which concerns on embodiment of this invention is demonstrated.

  FIG. 5 is a cross-sectional view showing a procedure for attaching the nail sharpening unit 30. When attaching the nail sharpening portion 30, first, as shown in FIG. 5A, the nail sharpening portion 30 is bent along the overlapping direction D of the cardboard pieces 33a so as to be shorter than the opening length L1 of the concave portion 20. . For example, the nail sharpening unit 30 grips both end portions in the overlapping direction D with left and right hands, and bends the plate member 32 in the direction of F1 so that the center portion of the plate member 32 protrudes upward. The cardboard piece 33a is bent so that the interval between the upper end surfaces of the cardboard piece 33a is widened.

  Here, the nail sharpening portion 30 is formed by joining a plurality of corrugated cardboard pieces 33a that are stacked without being joined to each other to the surface of the plate-like member 32 extending in the overlapping direction D, so that the plate-like member 32 is bent. Thus, the nail sharpening part 30 can be easily bent along the overlapping direction D.

  Next, with the engaging portion 34 of the nail sharpening portion 30 aligned with the second concave portion 22 of the main body portion 10, the nail sharpening portion 30 is caused to enter the concave portion 20 as shown in FIG. . It should be noted that the nail sharpening portion 30 is in a state where the nail sharpening member 33 is compressed along the overlapping direction D due to the elasticity of the cardboard piece 33a even if the upper end length of the nail sharpening member 33 is slightly larger than the opening length L1 of the concave portion 20. To enter. Thus, the nail sharpening part 30 can be easily entered into the recess 20 by bending the nail sharpening part 30 along the overlapping direction D to be shorter than the opening length L1.

  Then, when the nail sharpening portion 30 enters the recess 20, the bent state of the nail sharpening portion 30 is released and both ends of the nail sharpening portion 30 are engaged (engaged) with the recess 20 as shown in FIG. The resultant force F2) is attached. As described above, the nail sharpening portion 30 that has entered the recess 20 is released from the bent state and restored longer than the opening length L1, so that the nail sharpening portion 30 can be easily removed from the recess 20. Further, the engaging portions 34 on both sides of the nail sharpening portion 30 engage with the second concave portions 22 on both sides of the main body portion 10, and the engaging force (engaging force in FIG. 6) is applied to the main body portion 10 from both sides of the nail sharpening portion 30. F3) acts.

  When removing the nail sharpening part 30, the nail sharpening part 30 is lifted with respect to the main body part 10. The nail sharpening part 30 is lifted in a state where, for example, a finger is inserted into the third recesses 23 on both sides of the main body part 10 and the engaging part 34 of the nail sharpening part 30 is held.

  When the nail sharpening portion 30 is lifted, the engagement portion 34 with respect to the second recess 22 is opposed to the engagement force (engagement force F3 in FIG. 6) acting on the main body portion 10 from both sides of the nail sharpening portion 30. The engagement is released. Further, the both ends of the nail sharpening portion 30 are hooked on both ends in the longitudinal direction of the recess 20, so that the nail sharpening portion 30 extends along the overlapping direction D of the cardboard pieces 33 a so as to be shorter than the opening length L 1 of the recess 20. Bend. Thereby, the nail sharpening part 30 is removed from the recessed part 20 through the opening of the recessed part 20.

  FIG. 6 is a cross-sectional view showing the force acting on the nail sharpening surface 31 during nail sharpening. When the nail sharpening is performed, the cat scratches the nail sharpening surface 31, whereby forces F <b> 4 and F <b> 5 that cause the nail sharpening portion 30 to be detached from the main body 10 act on the nail sharpening surface 31.

  However, as shown in FIG. 6A, the detachment force F4 acting in the longitudinal direction of the nail sharpening surface 31 can be resisted by the engagement force F2 acting between the recess 20 and the nail sharpening portion 30. . Further, as shown in FIG. 6B, the detachment force F5 acting in the short direction of the nail sharpening surface 31 can be resisted by the engagement force F3 acting between the recess 20 and the nail sharpening portion 30. it can. Accordingly, it is possible to prevent the nail sharpening portion 30 from coming off during the nail sharpening.

  As explained above, according to the cat nail sharpener according to the embodiment of the present invention, the nail sharpening portion 30 is a plate-like member extending in the overlapping direction D with the plurality of cardboard pieces 33a stacked without being joined to each other. Since it is formed by being bonded to the surface of 32, the nail sharpening portion 30 can be easily bent along the overlapping direction D by bending the plate-like member 32.

  The recess 20 is formed such that the opening length L1 is shorter than the bottom surface length L2, and the opening length L1 is shorter than the length L3 of the nail sharpening portion 30 in the overlapping direction D. For this reason, by bending the nail sharpening portion 30 along the overlapping direction D so as to be shorter than the opening length L1, the nail sharpening portion 30 can be easily moved into the recess 20 and attached. Further, the nail sharpening portion 30 that has entered the recess 20 is released from the bent state and restored longer than the opening length L1, so that the nail sharpening portion 30 can be easily removed from the recess 20.

  Further, the surface of the main body portion 10 provided with the concave portion 20 is curved in the longitudinal direction of the main body portion 10 so that a portion where the concave portion 20 is provided is depressed from other portions. Thereby, the recessed part 20 which has the bottom face length L2 longer than the opening length L1 can be easily formed by the curvature of the main-body part 10. FIG.

  In addition, the concave portion 20 includes a first concave portion 21 provided in a central portion in the short direction of the main body portion 10 and a second deeper than the first concave portion 21 provided in both side portions of the main body portion 10 in the short direction. And engaging portions 34 that engage with the second recess 22 are provided on both side portions of the nail sharpening portion 30 in the short direction. Thus, by engaging the engaging portion 34 with the second recess 22, the engagement between the main body portion 10 and the nail sharpening portion 30 can be easily ensured.

  The recess 20 has a third recess 23 provided in the second recess 22 and deeper than the second recess 22, and the third recess 23 is a state in which the nail sharpening portion 30 is attached to the recess 20. It is exposed on the side surface of the main body 10. Thereby, the nail sharpening part 30 can be easily removed from the main body part 10 by inserting a finger or the like into the third recess 23.

  Further, in the nail sharpening portion 30, a surface intersecting with the paper width direction of the corrugated cardboard is exposed at one end surface forming the nail sharpening surface 31 and the other end surface opposite to the end surface. Thereby, a nail | claw can be reliably scratched with respect to the corrugation of the core of the cardboard which appears on the nail sharpening surface 31.

  In addition, the plate-like member 32 is provided with an opening 32a that allows one end surface forming the nail sharpening surface 31 to communicate with the other end surface opposite to the end surface. Thereby, the nail sharpening surface 31 can be kept warm by the heat generated from the heat source device by disposing the heat source device on the side opposite to the nail sharpening surface 31.

  The above-described embodiment is to describe the best embodiment of the cat nail sharpener according to the present invention, and the cat nail sharpener according to the present invention is limited to the one described in the present embodiment. It is not something. The cat nail sharpener according to the present invention is obtained by modifying the cat nail sharpener according to the present embodiment within a range not departing from the gist of the invention described in each claim, or by applying to other things. Also good.

  For example, in the above-described embodiment, the case where the main body portion 10 is formed of cardboard has been described. However, the main body 10 may be formed of any one or more of cardboard, cardboard, synthetic paper, synthetic resin, and wood. In the case where the main body 10 is formed by corrugated cardboard, the overlapping direction of the corrugated cardboard pieces can be selected as appropriate, but by making the corrugated cardboard piece 33a in the nail sharpening part 30 perpendicular to the overlapping direction D, the rigidity of the nail sharpener Can be increased.

  Further, in the above-described embodiment, the case where the nail sharpening portion 30 is formed so that the overlapping direction D of the corrugated cardboard pieces 33 a coincides with the longitudinal direction of the main body portion 10 while being attached to the concave portion 20 has been described. However, the nail sharpening part 30 may be formed so that the overlapping direction D of the cardboard pieces 33 a matches the short direction of the main body part 10.

  In the above-described embodiment, the case where the surface of the main body portion 10 is formed by curving in the longitudinal direction of the main body portion 10 so that the portion where the concave portion 20 is provided is recessed from the other portions has been described. However, the surface of the main body 10 may be formed such that a portion where the recess 20 is provided swells more than other portions, or may be formed flat. In this case, the cross-sectional shape of the recess 20 may be adjusted so that the opening length L1 of the recess 20 is shorter than the bottom surface length L2.

  In the above-described embodiment, a case has been described in which a plurality of concave portions 20 are provided on the surface of the main body portion 10 and the opening length L1 and the bottom surface length L2 are the same between the concave portions 20. However, the plurality of recesses 20 may be formed with different dimensions.

  Further, in the above-described embodiment, in order to realize the engagement between the main body 10 and the nail sharpening portion 30, the second concave portions 22 are provided on both side portions of the first concave portion 21, and the convex portions are formed on both sides of the nail sharpening portion 30. The case where the engagement part 34 having the shape is provided has been described. However, the engagement between the main body portion 10 and the nail sharpening portion 30 may be realized, for example, by another configuration in which the positions and number of the unevenness are changed.

  DESCRIPTION OF SYMBOLS 10 ... Main-body part, 20 ... Recessed part, 21 ... 1st recessed part, 22 ... 2nd recessed part, 23 ... 3rd recessed part, 30 ... Nail sharpening part, 31 ... Nail sharpening surface, 32 ... Plate-shaped member, 33 ... Nail sharpening member, 33a ... cardboard piece, 34 ... engaging portion.

Claims (5)

In the claw sharpening device for cats, in which the nail sharpening part is detachable with respect to the recess provided in the main body part
The nail sharpening part is formed by joining a plurality of corrugated cardboard pieces stacked without being joined to each other to the surface of a plate-like member extending in the overlapping direction,
The recess has an opening length shorter than the bottom length, and the opening length is shorter than the length of the nail sharpening portion in the overlapping direction.
Cat nail sharpener.   2. The cat nail sharpener according to claim 1, wherein a surface of the main body portion on which the concave portion is provided is curved in a longitudinal direction of the main body portion so that a portion on which the concave portion is provided is depressed from other portions. The concave portion includes a first concave portion provided in a central portion in the short direction of the main body portion, and a second concave portion provided in both side portions in the short direction of the main body portion and deeper than the first concave portion. Have
The nail sharpener for cats according to claim 1 or 2, wherein an engaging portion that engages with the second concave portion is provided on both lateral sides of the nail sharpening portion. The recess has a third recess provided in the second recess and deeper than the second recess,
The cat nail sharpener according to claim 3, wherein the third recess is exposed on a side surface of the main body with the nail sharpening portion being attached to the recess. The nail sharpening portion has a first surface facing the concave portion and a second surface opposite to the first surface,
The cat nail sharpener according to any one of claims 1 to 4, wherein a surface that intersects the paper width direction of the cardboard is exposed on the second surface .

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