cutter

Abstract

To provide a cutter which enables blade replacement work to be easily performed.SOLUTION: A cutter 1 includes: a slider 3 detachably connecting a replaceable blade 2; and a holder 5 which slidably holds the slider 3 and houses the replaceable blade 2 in a manner that allows the replaceable blade 2 to protrude from or retract into a tip 4. The slider 3 has: a lock part 24 which removably locks the replaceable blade 2; a first elastic member 23 elastically supporting the lock part 24; and an engagement part 25 provided integrally with the lock part 24. The holder 5 has a guide part 37 which guides the engagement part 25 in a position near the tip 4 so that the lock part 24 separates from the replaceable blade 2 against elastic force of the elastic member.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a cutter with replaceable blades.

Background Art

[0002] Conventionally, the following types of cutters have been proposed.

[0003] For example, in Patent Documents 1 to 3, there is disclosed a cutter in which a blade hole is fitted to a protrusion of a slider slidably provided in a holder, and the blade can be projected from and retracted into the holder by sliding the slider.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in any of them, in order to replace the blade, it is necessary to extract the slider from the holder and separate the blade from the slider, and the replacement work is troublesome.

[0006] The present invention has been made based on the above circumstances, and an object thereof is to provide a cutter that enables easy replacement of the blade.

Means for Solving the Problems

[0007] To solve the above problems, the cutter according to the present invention comprises a slider that detachably connects a blade, and a holder that slidably holds the slider and houses the blade so that it can protrude from and retract from its tip, the slider having a locking portion that detachably engages with the blade, an elastic member that elastically supports the locking portion, and an engaging portion integrally provided with the locking portion, and the holder having a guide portion that guides the engaging portion so that the locking portion disengages from the blade against the elastic force of the elastic member near the tip. The holder comprises a first member having a first rail that slidably supports one side of the slider, a second member having a second rail that slidably supports the other side of the slider, and a connecting means that connects the first member and the second member. It is characterized by the following: [Effects of the Invention]

[0008] According to the present invention, the blade replacement work can be easily performed. [Brief explanation of the drawing]

[0009] The drawings illustrate specific embodiments of the present invention, including not only essential components of the invention but also optional and preferred embodiments. [Figure 1] A plan view showing a cutter according to one embodiment of the present invention. [Figure 2] A cross-sectional view of the same cutter, taken along line II-II in Figure 1. [Figure 3] A cross-sectional view of the same cutter, taken along line III-III in Figure 1. [Figure 4] A perspective view showing the slider of the same cutter. [Figure 5] A plan view showing the slider. [Figure 6] A side view showing the slider. [Figure 7] A side view showing the slider from the tip end. [Figure 8] A side view of the slider, showing it from the base end. [Figure 9] An exploded perspective view showing the same cutter. [Figure 10] A plan view showing the first component of the cutter. [Figure 11] A side view showing the first component of the cutter. [Figure 12] A plan view showing the second component of the cutter. [Figure 13] Side view showing the second member of the same cutter. [Figure 14] Perspective view showing the usage state of the same cutter. [Figure 15] Perspective view showing the usage state of the same cutter. [Figure 16] Plan view showing the usage state of the same cutter. [Figure 17] Cross-sectional view taken along line XVII-XVII of FIG. 16 showing the usage state of the same cutter. [Figure 18] Cross-sectional view showing the state of replacing the replaceable blade of the same cutter. [Figure 19] Perspective view showing the state of replacing the replaceable blade of the same cutter.

Mode for Carrying Out the Invention

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0011] In FIGS. 1 to 3, reference numeral 1 indicates a cutter according to an embodiment of the present invention.

[0012] This cutter 1 includes a slider 3 that detachably connects a replaceable blade (blade) 2, and a holder 5 that slidably holds this slider 3 and that removably houses the replaceable blade 2 from a tip 4.

[0013] The upper surface of this slider 3 is exposed on the upper surface of the holder 5, and the slider 3 can be slid.

[0014] The replaceable blade 2 has a sharp edge portion 8 formed on one side edge from a tip 6 to a base end 7.

[0015] Also, a plurality of cutting lines 9 are engraved on one surface side (for example, the upper surface side) of the replaceable blade 2, and the used portion can be separated by folding along these cutting lines 9.

[0016] Furthermore, for example, a circular locking hole 10 is formed on the base end 7 side of the replaceable blade 2.

[0017] As shown in Figures 4 to 8, the slider 3 includes a rectangular parallelepiped slider body 21.

[0018] A plate-shaped first elastic member (elastic member) 23 is connected to the tip surface 22 of the slider body 21, extending parallel to the sliding direction toward the tip 4 side of the holder 5.

[0019] The tip 4 side and upper surface side of this first elastic member 23 is provided with, for example, a cylindrical locking portion 24 that can be detachably fitted into and locked into the locking hole 10 of the replacement blade 2.

[0020] Furthermore, the tip 4 side and lower surface side of the first elastic member 23 is provided with, for example, a cylindrical engaging portion 25 that extends from the first elastic member 23 in a direction perpendicular to the sliding direction and to both sides of the first elastic member 23.

[0021] In other words, the first elastic member 23 is configured to integrally and elastically support the locking portion 24 and the engaging portion 25.

[0022] Furthermore, a plate-shaped second elastic member 26 is connected to the tip surface 22 of the slider body 21, extending parallel to the sliding direction toward the tip 4 side of the holder 5.

[0023] In other words, this second elastic member 26 is provided parallel to the first elastic member 23.

[0024] A protrusion 27 is provided on the lower tip surface of the second elastic member 26, that is, on the side opposite to the first elastic member 23.

[0025] Furthermore, a pair of guide grooves 28 are formed on both sides of the upper part of the slider body 21, along the sliding direction.

[0026] The slider 3, configured in this way, is formed by integral molding.

[0027] Returning to Figures 1 to 3, the holder 5 has a housing section 31 formed inside that allows the slider 3 and replacement blade 2 to be slidably housed.

[0028] Furthermore, the tip 6 of the holder 5 has a blade opening 32 formed therein, which allows the replacement blade 2 to protrude from the housing portion 31 of the holder 5.

[0029] Furthermore, an elongated hole 33 communicating with the housing section 31 is formed on the upper surface of the holder 5 along the sliding direction, allowing the upper part of the slider 3 to be exposed and slide.

[0030] In other words, the width of the elongated hole 33 is narrower than the width of the housing section 31, so that the portions forming both sides of the elongated hole 33 of the holder 5 constitute a pair of guide rails 34 that slidably fit into the guide groove 28 of the slider 3.

[0031] The slider 3 is then guided by this pair of guide rails 34 and the bottom surface 35 of the housing 31.

[0032] The exposed portion of slider 3 is an operating section 39 for sliding with a finger.

[0033] Furthermore, a recessed portion 36 is formed in the center of the width direction of the bottom portion 35 along the sliding direction, so that the protrusion 27 of the slider 3 can elastically fit into it.

[0034] Furthermore, the holder 5 has a guide portion 37 near the tip 6 of the housing portion 31 that guides the engaging portion 25 so that the locking portion 24 detaches from the replacement blade 2 against the elastic force of the first elastic member 23 near the tip 6.

[0035] In other words, the guide portion 37 has guide surfaces 38 on both sides in the width direction of the housing portion 31 that can engage with the circumferential surfaces of both ends of the engaging portion 25.

[0036] This guide surface 38 is sloped so that it moves away from the replacement blade 2 as it approaches the tip 4, thereby moving the engaging portion 25 away from the replacement blade 2 as it approaches the tip 4.

[0037] As shown in Figures 9 to 13, the holder 5 configured in this way consists of a first member 43 having a first rail 42 that slidably supports one side of the slider 3, and a second member 45 having a second rail 44 that slidably supports the other side of the slider 3, with a boundary surface 41 that is in the center in the width direction and along the sliding direction as the boundary.

[0038] In other words, the guide rail 34 described above is composed of a first rail 42 and a second rail 44, with the first rail 42 fitting into the guide groove 28 on one side of the slider 3 and the second rail 44 fitting into the guide groove 28 on the other side of the slider 3.

[0039] Furthermore, the first member 43 has multiple positioning protrusions 46 projecting toward the second member 45, and the second member 45 has multiple positioning recesses 47 formed therein that engage with the positioning protrusions 46.

[0040] Furthermore, these first member 43 and second member 45 are each formed by integral molding.

[0041] The holder 5 is assembled by bonding (connecting) these first member 43 and second member 45 together with adhesive (connecting means) 48 so as to sandwich the slider 3.

[0042] In the above configuration, when using the cutter 1, the tip 6 of the replacement blade 2 is made to protrude from the tip 4 of the holder 5, as shown in Figures 1, 2, and 14.

[0043] At this time, the protrusion 27 of the slider 3 elastically engages with the recessed portion 36 of the holder 5 by the second elastic member 26, so the replacement blade 2 does not slide easily.

[0044] Next, when the cutter 1 is not in use, the replacement blade 2 is stored in the holder 5, as shown in Figures 15 to 17.

[0045] Even in this case, the protrusion 27 of the slider 3 elastically engages with the recessed portion 36 of the holder 5 by the second elastic member 26, so the replacement blade 2 does not easily protrude from the holder 5.

[0046] Next, when replacing the replacement blade 2, as shown in Figures 18 and 19, when the slider 3 is moved towards the tip 4 of the holder 5, the engaging portion 25 is guided by the guide surface 38, and the locking portion 24 is released from the locking hole 10 of the replacement blade 2.

[0047] Therefore, the replacement blade 2 can be easily replaced without removing the slider 3 from the holder 5.

[0048] In the above embodiment, the first member 43 and the second member 45 are bonded together with adhesive 48, but the present invention is not limited to this, and for example, one of the first member 43 and the second member 45 may be fitted into the other.

[0049] The disclosure relating to the present invention described above can be summarized to at least the following:

[0050] In other words, the cutter according to the present invention comprises a slider that detachably connects a blade, and a holder that slidably holds the slider and houses the blade so that it can be extended and retracted from its tip, wherein the slider has a locking portion that detachably engages with the blade, an elastic member that elastically supports the locking portion, and an engaging portion provided integrally with the locking portion, and the holder has a guide portion that guides the engaging portion so that the locking portion disengages from the blade against the elastic force of the elastic member near the tip.

[0051] The present invention described above may include at least the following embodiments. These embodiments may be adopted separately or in combination with each other.

[0052] (1) The guide portion is provided with a guide surface that moves the engaging portion away from the blade in the vicinity of the tip, especially towards the tip, against the elastic force of the elastic member. [Explanation of Symbols]

[0054] 1 Cutter 2 blades (replacement blades) 3 Sliders 5 holders 24 Locking part 23 Elastic members (first elastic member) 25 Engaging part 37 Information Department 38 Guide surface 42 First Rail 43. First component 44 Second Rail 45 Second Member 48. Connecting means (adhesive)

Claims

1. A slider that connects the blades so they can be attached and detached, A holder that slidably holds the slider and houses the blade so that it can protrude from and retract from its tip, It is equipped with, The aforementioned slider is A locking portion that detachably engages with the blade, An elastic member that elastically supports the locking portion, An engaging portion provided integrally with the aforementioned locking portion, It has, The holder has a guide portion that guides the engaging portion so that the locking portion disengages from the blade against the elastic force of the elastic member near the tip, The aforementioned holder is A first member having a first rail that slidably supports one side of the slider, A second member having a second rail that slidably supports the other side of the slider, A connecting means for connecting these first and second members, A cutter characterized by having the following features.

2. The cutter according to claim 1, characterized in that the guide portion has a guide surface in the vicinity of the tip that moves the side of the tip and the engaging portion away from the blade against the elastic force of the elastic member.

Images