JP2019024629A - Tool including detachable and replaceable blade case - Google Patents

Abstract

To provide a tool including integrally a replaceable blade case for storing a replaceable blade, and having heightened convenience and safety during treatment.SOLUTION: A scraper 1 includes a replaceable blade case 30 for storing a replaceable blade to be replaced. The replaceable blade case 30 can be mounted on a scraper body 10 detachably therefrom and functions as a cover member for covering a blade tip 20 of the scraper, when being removed. Namely, the replaceable blade case 30 attachable to the scraper body has a function jointly as a protection cover cap for the blade tip. Hereby, both of high convenience and safety can be achieved.SELECTED DRAWING: Figure 1B

Description

  The present invention relates to a tool capable of replacement blade replacement.

  For example, it is known that a tool such as a cutter knife can be used by replacing the blade when the blade deteriorates during use. Such cutter knives are often sold in a set with a replaceable blade case that can accommodate a plurality of replacement blades, and there are several prior art techniques that improve the convenience of handling the replaceable blade case. To do.

  The pen-type knife disclosed in Patent Document 1 includes a detachable cap, and the cap is configured to be detachable from the replaceable blade case. A knife stand is configured by connecting a cap to the replaceable blade case. By being configured as part of the knife stand, the cap is prevented from being lost. Further, the knife is prevented from rolling off the desk by placing the knife on a stand after the cutting operation is completed.

Japanese Patent No. 5597280

  An object of the present invention is to provide a tool that is integrally provided with a replaceable blade case that accommodates a replaceable blade and that has improved convenience and safety in handling.

The present invention provides a tool having the following features. The tool of the present invention includes a “tool main body”, “a replaceable blade that is detachably attached to the tool main body”, and “a replaceable blade case that houses a replacement blade for replacement”.
And in the tool body, “a first case holding portion that holds the replaceable blade case in a removable manner” and “a second case holding portion that covers the cutting edge protruding from the tool body and holds the replaceable blade case in a removable manner” Is provided.

  The “tool” in the present invention means, for example, a scraper, a cutter knife, or the like, which includes a blade and can replace the blade.

In the tool of the present invention having the above-described configuration, the “replaceable blade case that can be attached to and detached from the tool body” also has a function as a “protective cover cap for the blade edge”.
When viewed as a “blade blade case”, the blade case can be detachably held on the tool body, so that the blade is not lost and the blade needs to be replaced on the spot. The replacement blade can be immediately taken out and replaced (high convenience).
Since the replaceable blade case also functions as a “blade edge protective cover cap”, when the tool is not used, the blade edge can be blocked from the outside by attaching it to the second case holding portion (high safety) ). And since it can hold | maintain in the 1st case holding | maintenance part of a tool main body when not using as a cap, a cap is not lost.

  As described above, according to the tool of the present invention, both high convenience and safety are realized.

It is a perspective view of the scraper 1 which concerns on one Embodiment of this invention, Comprising: The state which uses the replaceable blade case as a cap for blade-tip protection is shown. The perspective view of the state which removed the cap (replacement blade case) from the scraper 1 of FIG. The perspective view of the state which fixed the cap (replacement blade case) removed in FIG. 1 to the tool main body. The perspective view shown in the state which closed the replaceable blade case shown in FIG. The perspective view shown in the state which opened the replaceable blade case shown in FIG. The back view of the replaceable blade case shown in FIG. 6 is a hexahedral view showing the overall shape of the scraper 1. FIG.

<Basic configuration of the scraper 1>
Embodiments of the present invention will be described below with reference to the accompanying drawings. 1A to 1C are perspective views showing a scraper 1 according to an embodiment of the present invention. As will be described in detail later, the replaceable blade case 30 provided in the scraper 1 can be held in the recess 11 provided in the scraper body 10 (FIG. 1C) and as a protective cover for the blade (blade) 20 fixed to the scraper body 10. It is also possible to use it (FIG. 1A).

  In the scraper 1, one end of the scraper body 10 is a substantially flat projection 12, and the blade 20 can be detachably attached to the projection 12. The knob 19 is operated when the deteriorated blade 20 is replaced. When the knob 19 is loosened, the mechanism for holding the blade 20 is loosened, and the blade 20 can be removed.

<Replacement blade case 30>
The scraper 1 includes a replaceable blade case 30, and this replaceable blade case 30 is detachably held in a recess 11 provided in the scraper body. The replaceable blade case 30 can accommodate a plurality of replaceable blades (not shown) in its interior, and the user can replace the blade 20 with the replaceable blade case 30 when the sharpness of the blade 20 deteriorates. It can be exchanged for a housed spare blade. The used blade 20 may be disposed in the replaceable blade case 30 or discarded by an appropriate method.

In the scraper 1 of the present invention, the replaceable blade case 30 can be selectively attached at two positions on the scraper body 10.
The first position is a recess 11 (first case holding portion) provided in the center of the main body. The second position is the protruding part 12 (second case holding part) provided at the end of the main body (the base of the blade 20). Depending on these two mounting positions, the replaceable blade case 30 provides two advantageous features described below.

<Advantageous feature 1>
By adopting a configuration in which the replaceable blade case 30 is detachably held on the scraper body 10, it is possible to prevent the replacement blade from being lost. When the replaceable blade is always integrated with the scraper, it can be immediately used. The other advantage is that the blade can be replaced.
In the illustrated example, the replaceable blade case 30 is detachably mounted in the recess 11 provided in the scraper body 10. Further, when the replaceable blade case 30 is mounted in the recess 11, the surface 30a of the replaceable blade case and the surface 10a of the scraper body are substantially flush with each other (FIG. 1C). Thereby, the sense of unity of the replaceable blade case 30 and the scraper body 10 is enhanced, and excellent design (high design) can be realized.

<Advantageous feature 2>
The replaceable blade case 30 removed from the recess 11 functions as a cover member that shields the blade 20 from the outside, thereby protecting the blade 20 from breakage and the like, and ensuring safety when not in use. That is, when the user does not use the scraper 1, the replaceable blade case 30 can be used as a cover member, and when working with the scraper 1, the replaceable blade case 30 can be fixed in the recess 11.
In the illustrated example, the replaceable blade case 30 has a recess 31 that enters inward from the side surface (a space for storing the replaceable blade is secured above the recess 31). When the replaceable blade case 30 is attached to the protruding portion 12, the entire protruding portion 12 enters the recess 31 together with the blade 20, and the blade 20 is blocked from the outside. The protrusion 12 enters the recess 31 and is pressed against the inner surface of the recess 31, whereby the replaceable blade case 30 is fixed to the scraper body 10 while covering the blade 20.

<Hook part 15 for preventing replacement blade case 30 from being opened carelessly>
As shown in FIGS. 2A and 2B, the replaceable blade case 30 includes a case main body 35 in which the replaceable blade is accommodated, and an open / close door 36 that opens and closes in a hinged manner with respect to the case main body 35. The hinge coupling portion 36a is located on the opposite side of the case body 35 from the wall surface where the recess 31 opens.
The replaceable blade case 30 is attached to the scraper body 10 by inserting the protrusion 12 into the recess 31. The replaceable blade case 30 can be fixed to the scraper body 10 without rattling by a generally known method such as friction engagement or snap fit.
On the other hand, the hook portion 15 formed on the scraper body 10 side functions as a locking portion (lock mechanism) that prevents the replaceable blade case 30 from being opened carelessly. That is, the hook portion 15 protrudes in parallel with the insertion direction of the replaceable blade case 30 with respect to the protruding portion 12, and when the replaceable blade case 30 is attached to the protruded portion 12, the hook portion 15 simultaneously opens and closes the door of the replaceable blade case. 36 is located opposite the surface. As a result, the opening / closing door 36 is prevented from rotating in the opening direction.
That is, in the state where the replaceable blade case 30 is fixed to the protruding portion 12, the opening / closing door 36 cannot be opened, and therefore the opening / closing door 36 can be prevented from being opened carelessly.

<Resilient elastic side walls 38a, 38b>
FIG. 2C shows the back surface of the replaceable blade case 30. Two opposing side walls 38a, 38b of the replaceable blade case 30 are provided with retreat spaces 39a, 39b inside thereof. As a result, when the user grips the side walls 38a and 38b from both outer sides, the side walls are elastically curved to the inner side, and the operational feeling during insertion and removal is improved, or the grip performance is improved. There are advantages.
Furthermore, if appropriate protrusions 33a and 33b are provided on the surfaces (preferably the center) of the side walls 38a and 38b, when the replaceable blade case 30 is mounted in the recess 11 of the scraper body 10, the inside of the recess 11 The wall surface is pressed against the protrusions 33a, 33b and the side walls 38a, 38b are elastically retracted, whereby the replaceable blade case 30 can be fixed in the recess 11 with an appropriate gripping force.
In order to easily remove the replaceable blade case 30 from the recess 11, an opening 14 is provided on the back side of the scraper body 10 (see FIGS. 1A and 1B). The user can easily remove the replaceable blade case 30 from the scraper body 10 by pressing the back surface of the replaceable blade case 30 with a fingertip or the like through the opening 14.

  In the illustrated example, as described above, the surface 30a of the replaceable blade case and the surface 10a of the scraper body are configured to be substantially flush with each other (FIG. 1C). When this configuration and the configuration of the replaceable blade case 30 that opens and closes in a hinged manner are combined and the replaceable blade case 30 is fixed in the recess 11 of the scraper body 10, the replaceable blade case 30 is inadvertently used. It can be surely prevented from opening. The replaceable blade case 30 can be opened only after it is removed from the recess 11 (high safety).

<Other embodiments>
(1)
In the illustrated embodiment, the replaceable blade case 30 includes a door 36 that opens and closes in a hinged manner. However, in the present invention, the specific form of the replaceable blade case can be changed as appropriate. .
When a hinged open / close blade case is employed, the hook portion 15 serves as a locking portion for preventing the opening / closing door from being opened carelessly in the illustrated example. It is possible to employ | adopt a suitable structure, without being limited to a simple structure.
(2)
A specific mode in which the first case holding portion (in the illustrated example, the recess 11) and the second case holding portion (in the illustrated example, the protruding portion 12) hold the replaceable blade case 30 is as illustrated. The present invention is not limited, and an appropriate configuration can be adopted.
However, in the illustrated example, (i) the replaceable blade case 30 is fixed to the protruding portion 12 by insertion, and (ii) the hook portion 15 protrudes in parallel with the insertion direction. When the replaceable blade case 30 is attached to the protruding portion 12, the hook portion 15 locks the opening / closing door 36 at the same time, which is extremely excellent in both operability and safety.
(3)
In the illustrated embodiment, the present invention is described by taking a scraper as an example. However, the present invention is not limited to a scraper, and can be applied to any tool capable of exchanging blades, such as a cutter knife.

1 Scraper (tool)
10 Scraper body 11 Recess (first case holder)
12 Protrusion (second case holder)
14 Opening 15 Hook part (locking part)
19 Knob 20 Blade (Blade)
30 Spare blade case 31 Recess 35 Case body 36 Open / close door 36a Hinge joint

Claims (4)

A tool body (10);
A replaceable blade (20) detachably mounted on the tool body;
A replaceable blade case (30) for accommodating a replaceable blade, and a tool comprising:
The tool body (10)
A first case holding part (11) for detachably holding the replaceable blade case;
The tool provided with the 2nd case holding | maintenance part (12) which covers the blade edge | tip which protrudes from a tool main body, and hold | maintains a replacement blade case so that attachment or detachment is possible. The replaceable blade case (30) includes a case main body (35) and an open / close door (36) that opens and closes in a hinged manner with respect to the case main body.
When the replaceable blade case (30) is attached to the second case holding portion (12), the tool body (10) is engaged with the open / close door of the replaceable blade case to prevent the open / close door from opening. The tool according to claim 1, wherein a locking part (15) is formed. The replaceable blade case (30) is attached to the second case holding part (12) in a plug-in manner,
The locking portion (15) includes a hook portion (15) protruding in parallel with the insertion direction of the replaceable blade case with respect to the second case holding portion,
At the same time that the replaceable blade case (30) is inserted and attached to the second case holding portion (12), the hook portion (15) is positioned to face the surface of the open / close door (36) of the replaceable blade case, thereby opening and closing the door. The tool according to claim 2, which prevents opening of the tool.   The tool according to claim 1, wherein the replaceable blade case (30) has two opposing side walls (38a, 38b) configured to be elastically retractable toward the inside of the case.