JPS6330387Y2 - - Google Patents

Description

[Detailed description of the invention] Purpose of the invention (field of industrial application) This invention relates to a replaceable blade type cutter knife.

(Prior art) Many conventional replaceable blade type cutter knives have been proposed that are equipped with a storage section on the back side of the holder that can store several to 10 replacement blades. This method has the disadvantage that the thickness of the holder increases, making it difficult to use the cutter knife.

On the other hand, Jikaisho, released on November 24, 1978,
52-154798, as shown in FIG. 9, a storage body 22 with an open front end for storing a spare blade is inserted into the rear end of a holder 21, and the storage body 22 is inserted into the rear end of the holder 21. Lid member 2 formed separately from body 22
3 has been proposed.

(Problem to be solved by the invention) However, since the storage body is formed in a box shape with an open front end, when taking out the replacement blade, the storage body must be turned upward or diagonally upward to be taken out from the holder. There is an inconvenience that the spare blade may fall off. Further, since the storage body and the lid member are formed separately, the lid member must be removed before taking out the storage body, which is troublesome, and the manufacturing process is time-consuming.

Structure of the invention (Means for solving the problem) In order to solve the above problem, in this invention, a slider is slidably mounted in a guide frame that is inserted and fixed in a holder, and a blade is attached to the slider. In the replaceable blade type cutter knife, the blade is detachably attached and the blade protrudes from the distal end side of the guide frame, and the cover member is detachably attached to the rear end of the holder. It is formed by a support piece extending forward from the support piece, and a clamping piece extending parallel to the support piece and forming a replaceable blade insertion part with at least one side open between the two, and the support piece and the clamping piece are cantilevered. A structure was adopted in which the structure is supported in a fixed state and at least one side has a spring action.

(Function) In the replaceable blade type cutter knife of this invention,
The spare blade is securely held between the support piece and the holding piece by the spring action of the holding piece, and is inserted into the rear end of the holder in this state, so the spare blade does not fall when removing the lid member from the holder. There isn't. Further, since the replaceable blade is stored and held at the rear of the holder, there is no need to particularly increase the thickness of the holder.

(Example) Hereinafter, an example that embodies this idea will be described.
This will be explained according to FIG. As shown in FIG. 1, a metal guide frame 1 is formed with a guide recess 2 having a square cross section in its longitudinal direction, and one side opening edge (in this embodiment, the lower side) of the guide recess 2 is formed with a guide recess 2 in the longitudinal direction. A locking portion 3 having continuous unevenness is formed. The guide frame 1 is fitted into and fixed to a holder 4 made of synthetic resin and having a square cross section so that the tip 1a of the guide frame 1 protrudes from the tip of the holder 4. A non-slip member 4a is formed on the rear outer peripheral surface of the holder 4. Further, a slider 5 is slidably inserted into the guide recess 2 of the guide frame 1 from the rear end opening of the guide frame 1. The slider 5 has a locking elastic piece 6 disposed in its inner recess. A locking portion 6a protruding from one side wall of the slider 5 is formed approximately in the center of the locking elastic piece 6, and is designed to elastically engage with the locking portion 3 of the guide frame 1. There is. In addition, the slider 5
A blade 7 is removably attached to the inner tip of the blade, and is moved as the slider 5 slides.
The guide frame 1 can be moved in and out from the tip 1a.

A lid member 8 is detachably attached to the rear end of the guide frame 1. As shown in FIGS. 4 to 6, the lid member 8 includes a lid portion 9, a clip 10, and a support piece 11.
and the clamping piece 12 are integrally formed of synthetic resin. The clip 10 is formed to extend forward from the top of the lid member 9, and has a non-slip member 10a formed on its top surface.

The support piece 11 is supported by the lid part 9 in a cantilevered manner so as to extend forward from below the clip 10 in parallel with the clip 10. A clamping piece 12 is continuously formed in a cantilevered state so as to invert from the tip of the supporting piece 11 and extend parallel to the supporting piece 11 toward the lid part 9 side, and to have a spring action. A replaceable blade insertion portion C is formed in which both sides are open. A semi-circular reinforcing portion 14 is formed at the base end of the holding piece 12 (near the tip of the supporting piece 11). The support piece 11 has an engaging protrusion 1 at a position opposite to the tip end of the clip 10.
1a is formed to protrude orthogonally to the longitudinal direction of the support piece 11. As shown in FIG. 5, the clip 10 and the support piece 11 cooperate to hold the guide frame 1.

Next, how to use the replaceable blade type cutter knife constructed as above will be explained. First, to use this cutter knife, slide the slider 5 until the blade body 7 protrudes from the tip 1a of the guide frame 1. The locking portion 6a of the locking elastic piece 6 disposed in the inner recess of the slider 5 is connected to the guide frame 1.
Since it elastically engages with the locking part 3 of the holder, it can be fixed at any position. After use, the blade 7 is moved to the guide frame 1.
The slider 5 is retracted until it is accommodated in the guide recess 2.

Next, a method for storing the replaceable blade 13 will be explained with reference to FIGS. 2 and 6. First, put your thumb on the non-slip 10a and
The lid member 8 is removed from the guide frame 1 by pressing it to the right in the figure. Next, the support piece 11 of the lid member 8
When a replaceable blade 13 wrapped in wrapping paper (indicated by a chain line in FIGS. 2 and 6) is inserted from the side of the blade insertion part C between the clamping piece 12 and the clamping piece 12, the spring force of the clamping piece 12 causes the blade 13 to be inserted.
is held in a sandwiched state by a support piece 11 and a clamping piece 12. Then, the lid member 8 is inserted into the rear end of the guide frame 1. As described above, the replaceable blade 13 is held in the replaceable blade insertion part C in a state where it is held between the support piece 11 and the clamping piece 12, so when the cover member 8 is removed from the holder 4, the replaceable blade 13 is held in the replaceable blade insertion part C. It will not fall out of the insertion section C. Further, since the support piece 11 and the clamping piece 12 are inserted into the guide frame 1, there is no need to increase the thickness of the holder 4, and the use of the cutter knife is not hindered.

Further, in this embodiment, since the clip 10 and the support piece 11 cooperate to hold the guide frame 1, the lid member 8 will not easily come off from the guide frame 1, and the engagement provided on the support piece 11 Due to the protrusion 11a,
The guide frame 1 can be held even more securely. Further, since the reinforcing portion 14 is provided on the clamping piece 12 of the lid member 8, the spring force of the clamping piece 12 is increased and the connecting portion between the supporting piece 11 and the clamping piece 12 is difficult to break.

Note that this invention is not limited to the above-mentioned embodiment, and may include a clip 10 provided on the lid member 8, a non-slip 10a provided on the clip 10, a non-slip 4a provided on the holder 4, and a lock provided on the support piece 11. The reinforcing portions 14 provided on the mating protrusion 11a and the clamping piece 12 are not necessarily provided. Moreover, instead of forming the holding piece 12 by bending the tip of the supporting piece 11, as shown in FIG.
The support piece 11 and the clamping piece 12 may both have a spring action. Furthermore, the clamping piece 12 may be formed of a metal plate spring, or the supporting piece 11 may have a spring force instead of the clamping piece 12 having a spring force. Further, as shown in FIG. 8, the replaceable blade insertion portion C may be formed so that only one side thereof is open.

Effects of the invention As detailed above, in this invention, the replaceable blade is held in the replaceable blade insertion part in a state where it is held between the support piece and the clamping piece, so when the cover member is removed from the holder, the replaceable blade is It does not fall out of the replacement blade insertion part, and since the support piece and the clamping piece are inserted into the rear of the holder, there is no need to increase the thickness of the holder, which has the excellent effect of not hindering the use of the cutter knife. .

[Brief explanation of the drawing]

1 to 6 show an embodiment of this invention, in which FIG. 1 is a front view of the cutter knife, FIG. 2 is a partially omitted front view showing the state with the lid removed, and FIG. 3 is a bottom view, FIG. 4 is a bottom view of FIG. 2, FIG. 5 is a sectional view taken along line A-A in FIG. 8
The figures show another example of the lid member, with FIG. 7 being a side view, FIG. 8 being a sectional side view, and FIG. 9 being an exploded perspective view showing a conventional cutter knife. Guide frame 1, tip 1a, slider 5, blade 7,
Lid member 8, lid portion 9, support piece 11, and clamping piece 12.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A slider 5 is slidably mounted in a guide frame 1 which is fitted and fixed in a holder 4, a blade 7 is removably attached to the slider 5, and the blade 7 is attached to the slider 5 in a removable manner. In the replaceable blade type cutter knife that is configured to protrude from the tip 1a side of the guide frame 1, the lid member 8, which is removably attached to the rear end of the holder 4, is moved forward from the lid portion 9 to the lid portion 9. An extending support piece 11, and a clamping piece 1 extending parallel to the support piece 11 and forming a replaceable blade insertion part C with at least one side open between the support pieces 11 and 12.
2, the support piece 11 and the clamping piece 1
2 is supported in a cantilevered state, and at least one of the blades is provided with a spring action. 2. The replaceable blade type cutter knife according to claim 1, wherein the holding piece 12 is bent from the tip of the supporting piece 11 so as to extend toward the lid portion 9 side. 3. The replaceable blade type cutter knife according to claim 1, wherein the cover member 8 is provided with a clip 10 that clamps the guide frame 1 in cooperation with the support piece 11. 4. The replaceable blade type cutter knife according to claim 1, wherein the lid member 8 is made of synthetic resin.