The present invention relates to a cutter configured by detachably attaching a replaceable blade to a cutter body.
As a cutter used for a knife for medical use, a knife for pathologic use, or razors for facial shaving and haircut, there is a cutter configured by detachably attaching a replaceable blade to a cutter body.
In such a cutter, the replaceable blade is attached to the cutter body by inserting the replaceable blade into a groove section provided in the cutter body. Then, the replaceable blade can be replaced after a predetermined number of use or a period of use.
Various devising is made to such a blade-replaceable type cutter in order to facilitate an easy replacement of the replaceable blade. For example, a cutter described in a patent document 1 includes an engaging member capable of sliding with respect to a cutter body, and the replaceable blade can be attached to and detached from the cutter body by using a fore end section of the cutter body and the engaging member such that an opening section provided in the replaceable blade is engaged and being pulled in a longitudinal direction.
Further, a patent document 2 discloses the cutter that allows a replaceable blade cartridge configured of a replaceable blade and a protection cover to be detachably attached to a cutter body.
However, in the cutter of the patent document 1, a coil spring is used for retaining the engaging member at a rear end side in the longitudinal direction so that the replaceable blade does not fall off. That is, the replaceable blade is retained on the cutter body by the engaging member which is pulled to the rear end side in the longitudinal direction by a biasing force of the coil spring. Due to this, the coil spring needs to be installed in the cutter body, which causes problems that a configuration thereof becomes complicated, and a number of components increase.
Further, the cutter of the patent document 2 is capable of replacing the replaceable blade cartridge configured of the replaceable blade and the protection cover, as described above. That is, unlike the replaceable blade as the disposable component, the replaceable blade cartridge configured of the replaceable blade and the protection cover will be a disposable component. A long-term use of the cutter of the aforementioned blade-replaceable type may increase the cost (running cost), which is not economical.
The present invention has been made in view of the foregoing problems, and aims to provide a cutter which allows replacement of the replaceable blade only, and has less number of components, and a simple configuration.
An aspect of the present invention is a cutter configured by detachably attaching a replaceable blade to a cutter body. The cutter body is configured of a main body block and a slide block retained with respect to the main body block so as to be able to move in a longitudinal direction of the cutter. The main body block includes a container section that houses the slide block so as to allow the slide block to move in the longitudinal direction, a main body supporting section that supports a back face of the replaceable blade, and a main body connecting section that connects with the replaceable blade from a front face side. The slide block includes a rear-side supporting section that supports the back face of the replaceable blade at a rear side of the main body supporting section, a slide connecting section that connects with the replaceable blade so as to retract the replaceable blade toward the rear side, a flexible section that bends in a thickness direction of the replaceable blade at the rear side of the rear-side supporting section, and a wing section that protrudes from a part of the flexible section toward at least one side in a height direction perpendicular to the longitudinal direction and the thickness direction. A front side retaining section that retains the wing section from a front side is formed in at least one side of the container section in the height direction, and the front side retaining section includes a protruding engaging section that protrudes toward a backside. In an attached state in which the replaceable blade is attached to the cutter body, the wing section is engaged from a foreside by the protruding engaging section, and the wing section is configured capable of being released from the protruding engaging section by bending the flexible section of the slide block from the attached state.
In the cutter as described above, when the replaceable blade is to be attached to the cutter main body, a blade replacing state in which the replaceable blade can be detachably attached is realized by moving the slide block forward, and the replaceable blade is temporarily connected with the main body connecting section and the slide connecting section. Then the main body connecting section and the slide connecting section pull the replaceable blade to both sides in the longitudinal direction by causing the slide block to retract rearward. Due to this, the attached state in which the replaceable blade is attached to the cutter body is realized.
Further, contrary to the above, the replacement of the replaceable blade may be easily performed by forcibly moving the slide block forward from the attached state to realize the blade replacing state.
Further, in the attached state, the wing section is engaged from the foreside by the protruding engaging section. Due to this, the slide block is restricted to move forward, and the attached state is maintained. Further, the wing section is configured to be releasable from the protruding engaging section by bending the flexible section of the slide block in the attached state.
That is, in the cutter, fixation of the slide block in the attached state and switching from the attached state to the blade replacing state can both easily be implemented by utilizing the elastic deformation of the flexible section of the slide block. Thus, no additional member needs to be provided for restricting the slide block to move forward in the attached state, and the configuration for releasing the attached state can be simplified to a great extent.
This allows the cutter to reduce the number of components and have a simplified configuration.
As described above, the present invention provides the cutter which allows replacement of only the replaceable blade, reduced number of components, and simplified configuration.
The cutter of the present invention may for example be a knife for medical use, a knife for pathologic use, or razors for facial shaving and haircut.
Further preferably, the protruding engaging section includes a tapered section at a fore end section, and a protruding amount of the tapered section decreases toward a fore end side. In this case, when sliding the slide block from the blade replacing state to the attached state, the wing section can be moved to a back face of the protruding engaging section along the tapered section. Further, by causing the slide block to slide toward a rear-side as it is, the wing section can easily be engaged with a rear end section of the protruding engaging section. Due to this, the movement of the slide block from the blade replacing state to the attached state can smoothly be performed.
Preferably, the replaceable blade has flexibility in the thickness direction, and elastically deforms in the attached state so as to curve in the thickness direction protrudingly toward a backside. In this case, the replaceable blade is to be pressed against the main body supporting section, the main body connecting section, and the rear-side supporting section by an elastic force (restoring force) of itself. Due to this, the replaceable blade can more stably be fixed to the cutter body.
Preferably, in the attached state, the rear-side supporting section protrudes toward a front side in the thickness direction farther than the main body supporting section. In this case, the replaceable cutter that is engaged with the main body connecting section and is supported at its back face by the main body supporting section and the rear-side supporting section can easily curve in the protruding shape toward the main body supporting section and the rear-side supporting section. Due to this, the replaceable blade can surely be fixed to the cutter body by the elastic force of the replaceable blade.
Further, the replaceable blade preferably includes an opening section that penetrates the replaceable blade in the thickness direction, the main body connecting section protrudes to the front side in the thickness direction from the main body supporting section, and is inserted in the opening section and abuts on a fore edge of the opening section in the attached state, and the slide connecting section protrudes to the front side in the thickness direction from the rear-side supporting section, and is inserted in the opening section and abuts on a rear end of the opening section in the attached state. In this case, the replaceable blade can easily and surely be connected by the main body connecting section and the slide connecting section, and the attached state can easily be established.
Further, in this case, the replaceable blade can be attached to the cutter body as below, for example. Firstly, the slide block is moved forward to realize the blade replacing state, and the main body connecting section and the slide connecting section are inserted into the opening section of the replaceable blade. Then, the slide block is moved rearward, whereby the main body connecting section is caused to abut on the fore edge of the opening section of the replaceable blade, and the slide connecting section is caused to abut on the rear end of the opening section of the replaceable blade. Due to this, the attached state in which the replaceable blade is attached to the cutter body can easily be formed.
Preferably, the slide block includes a rear-side opposing face that opposes a rear end of the replaceable blade in the longitudinal direction. The backside opposing face is configured to press the replaceable blade toward the foreside by the backside opposing face abutting on the back end of the replaceable blade when the slide block is moved forward with respect to the main body block. In this case, the connection with the main body connecting section can easily be released by moving the replaceable blade forward by moving the slide block forward. Due to this, the replacement of the replaceable blade can more easily be performed.
Further, the slide block is preferably diverged into a center part and a pair of diverged parts arranged at a position on a foreside of the wing section, the center part including the rear-side supporting section and the slide connecting section, and the pair of diverged parts being arranged at both sides with respect to the center part in a height direction, and the rear-side opposing face is formed at fore ends of the pair of diverged parts. In this case, the rear-side opposing face can more stably be made to contact the rear end of the replaceable blade. That is, since the pair of diverged parts is formed at different portions from the center part, the fore ends of the diverged parts can be processed as end surfaces. Due to this, by forming the rear-side opposing face at the fore ends of these diverged parts, the rear-side opposing face can be a face that is parallel to the thickness direction of the replaceable blade. As a result, the rear-side opposing face can stably be made to contact the rear end of the replaceable blade, so that the replaceable blade can stably be pushed out forward when the slide block is moved forward with respect to the main body block.
Preferably, the wing section is formed protruding in both sides in the height direction of the slide block. The front side retaining section is formed at each of both sides in the height direction of the container concave section. Each of the front side retaining sections at the both sides includes the protruding engaging section. In this case, the slide block can be retained stably on the main body block.
Preferably, the cutter includes a cylindrical slide cover that is attached slidably in the longitudinal direction with respect to the main body block and opens in both sides along the longitudinal direction. The slide cover is configured capable of being locked at a foreside position where the replaceable blade is covered and a rear-side position where the replaceable blade is exposed. In this case, in the attached state, since the slide cover covers the replaceable blade by locking the slide cover at the foreside position, user's safety can be ensured, and damage to the replaceable blade can be prevented. Further, when using the cutter, smooth usage of the cutter can be ensured by locking the slide cover at the rear-side position.
Further, the slide cover includes a connecting claw section formed toward inside in the thickness direction. The connecting claw section is configured capable of being elastically displaced in the height direction with respect to a cover main body of the slide cover. The main body block includes a slide groove section formed in the longitudinal direction. A foreside retaining section and a rear-side retaining section that respectively retain the connecting claw section from fore and rear directions are formed at a foreside and a rear-side of the slide groove section. The connecting claw section is slidably arranged in the slide groove section, and connected with the foreside retaining section or the rear-side retaining section so that the slide cover is locked at the foreside position or the rear-side position.
Preferably, the slide groove section includes a foreside groove section that extends from the foreside retaining section toward a foreside and opened toward the foreside of the main body block, and a rear-side groove section that extends from the foreside retaining section toward the rear side and is coupled to the rear-side retaining section, and a communicating section for connection between the foreside retaining section and the foreside groove section is formed at opposite sides of a communicating section for connection between the foreside retaining section and the rear-side groove section in the height direction. In this case, the slide cover can easily be attached and detached to and from the cutter body, and can surely be fixed thereto at the foreside position. That is, by providing the foreside groove section, the connecting claw section can be passed through the foreside groove section, whereby the slide cover can easily be attached and detached with respect to the cutter body in a longitudinal direction thereof. Further, with the communicating section between the foreside retaining section and the foreside groove section and the communicating section between the foreside retaining section and the rear-side groove section being formed at the opposite sides in the height direction from one another, the connecting claw section can easily and surely be arranged more easily at the foreside retaining section. For example, when trying to arrange the connecting claw section at the foreside retaining section by sliding the slide cover from the rear-side position to the foreside position, the connecting claw section can be prevented from passing through the foreside retaining section by momentum thereof.
Further, the slide cover may be configured to include a pair of spring arms capable of elastically deforming in the height direction at both sides in the height direction, and the pair of spring arms extends from a continuing section from the cover main body toward the foreside and is coupled by a coupling section to one another at fore end sections, and the connecting claw section may be formed in the coupling section. In this case, the connecting claw section can easily be displaced in the height direction by the elastic deformation of the spring arms.
Preferably, the slide cover is configured by including a front side pressing section capable of elastically deforming in the thickness direction at a position opposite the flexible section of the slide block when the slide cover is arranged at the rear-side position. In this case, when the slide cover is arranged at the rear-side position, the flexible section of the slide block can be pressed in the thickness direction via the front side pressing section. Due to this, work for the release of the attached state by bending the slide block can easily be performed.
Further, the slide cover may be configured to include a front side opening section that exposes the flexible section at the position that opposes the flexible section of the slide block when the slide cover is arranged at the rear-side position. In this case, when the slide cover is arranged at the rear-side position, the flexible section of the slide block exposed at the front side opening section can be pressed in the thickness direction. Due to this, the work for the release of the attached state by bending the slide block can easily be performed.
An embodiment of the cutter will be explained with reference to
As shown in
As shown in
As shown in
As shown in
As shown in
As shown in
Note that, in this description, a direction to which a fore end of the replaceable blade 3 points along the longitudinal direction Y of the cutter 1 is expressed as “fore”, and an opposite side therefrom as “rear”. Further, the thickness direction X refers to a direction that corresponds to a thickness direction of the replaceable blade 3, where a side by which the replaceable blade 3 is supported by the main body supporting section 41 and the rear-side supporting section 51 is referred to as “back”, and an opposite side therefrom as “front”. Further, a direction that is perpendicular to both the longitudinal direction Y and the thickness direction X is referred to as the height direction Z. The replaceable blade 3 includes a cutting edge 35 at one edge in the height direction Z, where a direction of an edge side onto which the cutting edge 35 is formed in the height direction Z is referred to as “lower side”, and an opposite side therefrom as “upper side”.
Further, as shown in
As shown in
As shown in
Further, as shown in
Further, the main body supporting section 41 has a larger up and down width in the height direction Z than the rear end side opening section 33.
The replaceable blade 3 has flexibility in the thickness direction X. Further, as shown in
While being in the attached state S, the rear-side supporting section 51 is protruding toward a protruding direction of the backside connecting section 52 farther than the main body supporting section 41.
As shown in
As shown in
As shown in
At a rear end side of the front side retaining sections 43 in the container wall sections 452, wing section inserting sections 454 that are cut in the height direction Z are formed adjacently. The wing section inserting sections 454 are formed for each pair of container wall sections 452. The slide block 5 is configured to be inserted and arranged in the container section 45 of the main body block 4 from the front side and capable of being detached from the container section 45 under a state in which the pair of wing sections 56 is aligned with respect to the pair of wing section inserting sections 454.
As shown in
The fore end sections 431 of the protruding engaging sections 430 include tapered sections whose protruding amount decreases toward the fore end side. On the other hand, the rear end sections 432 of the protruding engaging sections 430 include end faces that are perpendicular to the longitudinal direction Y. As shown in
As shown in
As shown in
The center part 503 includes the rear-side supporting section 51 and the slide connecting section 52. That is, the rear-side supporting section 51 is formed so as to extend forward at a position retracted toward the back face side in the thickness direction X from a diverging portion, and the slide connecting section 52 is formed at the fore end section of the rear-side supporting section 51 so as to protrude toward the front face side in the thickness direction X.
The pair of diverged parts 504 is arranged at both sides with respect to the center part 503 in the height direction Z, and extends forward. Further, as shown in
Of the pair of diverged parts 504, the diverged part 504 on the upper side of the height direction Z is longer than the diverged part 504 on the lower side. Further, the rear-side opposing faces 54 formed respectively thereon are formed in substantially the same plane. Further, the rear-side opposing faces 54 are tilted with respect to the longitudinal direction Y and the height direction Z, and are formed parallel to the thickness direction X. That is, the pair of rear-side opposing faces 54 is formed so as to be substantially parallel to the tilted rear end 34 of the replaceable blade 3.
Further, the rear-side opposing faces 54 of the diverged parts 504 are formed as end surfaces of the slide block 5. That is, when punching or machining the slide block 5, the rear-side opposing faces 54 are formed as processed end surfaces therein.
As shown in
Further, the slide block 5 needs to be configured to allow the flexible section 53 to be bent in the thickness direction X while protruding toward the backside in the state where the slide block 5 is housed in the container section 45 of the main body block 4. Due to this, as shown in
In other words, in the present embodiment, a portion between the center part 503 and the operating section 55 can be said to be serving as the flexible section 53.
Further, as shown in
Next, a method of attaching and a method of detaching the replaceable blade 3 in the cutter 1 of this embodiment will be explained.
Firstly, as shown in
At this occasion, the back face of the replaceable blade 3 is brought into contact with the main body supporting section 41 of the main body block 4 and the rear-side supporting section 51 of the slide block 5.
Further, the rear end 34 of the replaceable blade 3 is arranged opposite the rear-side opposing faces 54 of the slide block 5.
Next, the slide block 5 is moved rearward with respect to the main body block 4. At this occasion, as shown in
As shown in
Further, as shown in
Further, the wing sections 56 are at least partially retained by the front side retaining sections 43 at the rear side of the protruding engaging sections 430 from the front side.
Accordingly, the attached state S in which the replaceable blade 3 is attached to the cutter body 2 is realized.
As shown in
Further, when detaching the replaceable blade 3 from the cutter body 2, the slide block 5 is moved forward with respect to the main body block 4 from the attached state S. At this occasion, the slide block 5 is pushed in toward the backside at the flexible section 53 to be bent thereat. Due to this, the pair of wing sections 56 is displaced toward the backside farther than the protruding engaging sections 430 of the main body block 4, and the connected state of the wing section 56 and the protruding engaging sections 430 is released. As shown in
Then, as the slide block 5 is moved forward, as shown in
The replaceable blade 3, the main body block 4 and the slide block 5 are all made of metal such as stainless steel.
Next, an advantageous effect of the present embodiment will be explained.
In the aforementioned cutter 1, when attaching the replaceable blade 3 to the cutter body 2, the slide block 5 is moved forward so as to realize the blade replacing state T in which the replaceable blade 3 can be attached and detached, and the replaceable blade 3 is temporarily engaged with the main body connecting section 42 and the slide connecting section 52. Then, the main body connecting section 42 and the slide connecting section 52 are caused to pull the replaceable blade 3 in both sides in the longitudinal direction by moving the slide block 5 rearward. Due to this, the attached state S in which the replaceable blade 3 is attached to the cutter body 2 can be realized.
Further, contrary to the above, the replacement of only the replaceable blade 3 is easily enabled by realizing the blade replacing state T from the attached state S by forcibly moving the slide block 5 forward.
Further, as shown in
That is, the cutter 1 can easily realize fixation of the slide block 5 in the attached state S and switching from the attached state S to the blade replacing state T by utilizing the elastic deformation of the flexible section 53 of the slide block 5. Due to this, no additional member for restricting the slide block 5 to move forward in the attached state S is required, and a configuration for releasing the attached state S can be significantly simplified.
Due to this, the cutter 1 can decrease a number of components, and have its configuration simplified.
Further, the protruding engaging sections 430 includes the tapered section at the fore end sections 431. Due to this, the wing sections 56 may be moved on the back faces of the protruding engaging sections 430 along the tapered sections upon sliding the slide block 5 from the blade replacing state T to the attached state S. Subsequent to the movement, the slide block 5 is further moved rearward so as to easily engage the wing sections 56 with the rear end sections 432 of the protruding engaging sections 430. Thus, the slide block 5 is allowed to move smoothly from the blade replacing state T to the attached state S.
Further, the replaceable blade 3 has flexibility in the thickness direction X, and elastically deforms in the attached state S so as to curve protrudingly toward the backside in the thickness direction. Due to this, the replaceable blade 3 is pressed against the main body supporting section 41, the main body connecting section 42, and the rear-side supporting section 51 by the elastic force (restoring force) of itself. Due to this, the replaceable blade 3 can more stably be fixed to the cutter body 2.
Further, in the attached state S, the rear-side supporting section 51 protrudes toward the front side in the thickness direction X farther than the main body supporting section 41. Due to this, the replaceable blade 3 that is engaged with the main body connecting section 42 and is supported at its back face by the main body supporting section 41 and the rear-side supporting section 51 can easily curve in the protruding shape toward the main body supporting section 41 and the rear-side supporting section 51. Due to this, the replaceable blade 3 can surely be fixed to the cutter body 2 by the elastic force of the replaceable blade 3.
Further, in the attached state S, the main body connecting section 42 is inserted in the opening section 31 of the replaceable blade 3 and abuts on the fore edge of the opening section 3, and the slide connecting section 52 is inserted in the opening section 31 of the replaceable blade 3 and abuts on the rear edge of the opening section 31. Due to this, the replaceable blade 3 can easily and surely be connected by the main body connecting section 42 and the slide connecting section 52, and the attached state S can easily be formed.
Further, the slide block 5 includes the rear-side opposing faces 54, and the rear-side opposing faces 54 are configured to press the replaceable blade 3 toward the foreside by the rear-side opposing faces 54 while abutting on the rear end 34 of the replaceable blade 3 when the slide block 5 is moved forward with respect to the main body block 4. Due to this, the connection with the main body connecting section 42 can easily be released by moving the slide block 5 forward to move the replaceable blade 3 forward. Due to this, the replacement of the replaceable blade can more easily be performed.
Further, the slide block 5 is diverged into the center part 503 and the pair of diverged parts 504, the rear-side opposing faces 54 are formed at the fore ends of the pair of diverged parts 504. Due to this, the rear-side opposing faces 54 can more stably be abutted on the rear end 34 of the replaceable blade 3. That is, since the pair of diverged parts 504 is formed at different portions from the center part 503, the fore ends of the diverged parts 504 can be processed as end surfaces. Due to this, by forming the rear end side opposing faces 54 at the fore ends of these diverged parts 504, the rear-side opposing faces 54 can be those parallel to the thickness direction X of the replaceable blade 3. As a result, the rear-side opposing faces 54 can stably be abutted on the rear end 34 of the replaceable blade 3, so that the replaceable blade 3 can stably be pushed forward when the slide block 5 is moved forward with respect to the main body block 4.
As described above, according to the present embodiment, the replacement of only the replaceable blade is enabled while providing the blade with simple configuration with less number of components.
As shown in
The slide cover 6 has a cylindrical shape that opens in both sides along the longitudinal direction. The slide cover 6 is made of metal such as stainless steel, etc., and is formed by cutting and bending a single metal plate.
The slide cover 6 is configured to be locked at a foreside position CF covering the replaceable blade 3 (
As shown in
As shown in
The connecting claw section 61 is arranged slidably in the slide groove section 48. Further, the slide cover 6 is locked at the foreside position CF or the rear-side position CR by connecting the connecting claw section 61 with the foreside retaining section 481 or the rear-side retaining section 482, respectively.
The slide groove section 48 includes a foreside groove section 483 that extends from the foreside retaining section 481 toward the foreside and opened toward the foreside of the main body block 4, and a rear-side groove section 484 that extends from the foreside retaining section 481 toward the rear side and coupled to the rear-side retaining section 482.
That is, the slide groove section 48 is configured of the foreside groove section 483, the foreside retaining section 481, the rear-side groove section 484, and the rear-side retaining section 482 arranged in this order from the foreside. They are continuously arranged to form a substantially straight line in the longitudinal direction Y. Note that, communicating sections 485, 486 and 487 that are constricted from any sides in the height direction Z communicate the foreside groove section 483 and the foreside retaining section 481 as well as the foreside retaining section 481 and the rear-side groove section 484 and also the rear-side groove section 484 and the rear-side retaining section 482. The communicating sections 486 and 487 are constricted from the upper side (which is a lower side in
That is, the communicating section 485 between the foreside retaining section 481 and the foreside groove section 483 and the communicating section 486 between the foreside retaining section 481 and the rear-side groove section 484 are formed in opposite sides from one another in the height direction Z.
As shown in
Further, as shown in
Further, as shown in
The front side pressing section 64 is formed on the front side of the slide cover 6, extends from the continuing section with the cover main body 60 toward the rear side, and has its rear end section configured capable of significantly deforming in the thickness direction X. As shown in
Further, as shown in
Further, as shown in
Further, as shown in
Meanwhile, when using the cutter 1, as shown in
At this occasion, the connecting claw section 61 of the slide cover 6 is connected with the rear-side retaining section 482 provided at the rear end of the slide groove section 48 of the main body block 4. Due to this, the slide cover 6 at the rear-side position CR is restricted to move forward with respect to the main body block 4.
Next, when sliding the slide cover 6 from the rear-side position CR to the foreside position CF, the connecting claw section 61 is lowered downward in the height direction Z (upper side in
Accordingly, the slide cover 6 is locked at the foreside position CF.
Then, when detaching the slide cover 6 from the main body block 4, the connecting claw section 61 is detached from the foreside retaining section 481 forward, and is moved forward through the foreside groove section 483. For that purpose, the connecting claw section 61 that had been arranged at the foreside retaining section 481 is disengaged from the foreside retaining section 481 and is allowed to move forward from the communicating section 485 by pushing the lower side spring arm 631 upward (downward in
In the present embodiment, in the attached state S, since the slide cover 6 covers the replaceable blade 3 by locking the slide cover 6 at the foreside position CF, user's safety can be ensured, and damage to the replaceable blade 3 can be prevented. Further, when using the cutter 1, smooth usage of the cutter 1 can be ensured by locking the slide cover 6 at the rear-side position CR.
Further, the connecting claw section 61 of the slide cover 6 is slidably arranged in the slide groove section 48, and connected with the foreside retaining section 481 or the rear-side retaining section 482 so that the slide cover is locked at the foreside position CF or the rear-side position CR. Due to this, the slide cover 6 can easily be moved and locked between the foreside position CF and the rear-side position CR.
Further, since the slide groove section 48 is formed at the back face of the main body block 4, the slide groove section 48 is to be opened to an opposite side of an opened side of the container section 45, thus, freedom degree of arrangement thereof can be improved.
Further, the slide groove section 48 includes the foreside groove section 483 and the rear-side groove section 484, and the communicating section 485 between the foreside retaining section 481 and the foreside groove section 483 and the communicating section 486 between the foreside retaining section 481 and the rear-side groove section 484 are formed on opposite sides of one another in the height direction Z. Due to this, the slide cover 6 can easily be attached and detached with respect to the cutter body 2, and can surely be fixed at the foreside position CF. That is, with the foreside groove section 483 being provided, the slide cover 6 can easily be attached and detached with respect to the cutter body 2 along the longitudinal direction Y thereof while passing the connecting claw section 61 through the foreside groove section 483. Further, by having the communicating section 485 between the foreside retaining section 481 and the foreside groove section 483 and the communicating section 486 between the foreside retaining section 481 and the rear-side groove section 484 formed on the opposite sides of one another in the height direction Z, it is made easier for the connecting claw section 61 to easily and surely be arranged at the foreside retaining section 481. For example, when sliding the slide cover 6 from the rear-side position CR to the foreside position CF to arrange the connecting claw section 61 at the foreside retaining section 481, the connecting claw section 61 is prevented from passing though the foreside retaining section 481 by momentum thereof.
Further, the slide cover 6 includes the pair of spring arms 631, and the pair of spring arms 631 are coupled by the coupling section 632 to one another at the fore end sections, and the connecting claw section 61 is formed at the coupling section 632. Due to this, the connecting claw section 61 can easily be displaced in the height direction Z by the elastic deformation of the spring arms 631.
Further, the slide cover 6 is provided with the front side pressing section 64. Due to this, when the slide cover 6 is arranged at the rear-side position CR, the flexible section 53 of the slide block 5 can be pushed in the thickness direction X via the front side pressing section 64. Due to this, the work to release the attached state S by bending the slide block 5 can easily be performed.
In addition, similar advantageous effect as that of the first embodiment is obtained.
In the cutter 1 of the present embodiment, a front side opening section (not shown in the drawing) may be provided in the slide cover 6 instead of the front side pressing section 64 provided in the slide cover 6. That is, the slide cover 6 may be provided with a front side opening section 64 that exposes the flexible section 53 at a position opposite the flexible section 53 in the slide block 5 when it is arranged at the rear-side position CR. In this case, the flexible section 53 of the slide block 6 exposed from the front side opening section 64 can be pushed in the thickness direction X when the slide cover 6 is arranged at the rear-side position CR. Due to this also, the work to release the attached state S by bending the slide block 6 can easily be performed.
As shown in
As shown in
Further, at a lower side in the height direction Z, the cylinder section 40 includes a lower side opening section 401 that is formed along the longitudinal direction Y. As shown in
Further, as shown in
Further, a lower side concaved section 402 that is concaved toward inside and has a curved surface is formed around the lower side opening section 401.
Further, as shown in
As shown in
In the attached state S in which the replaceable blade 3 is attached to the cutter body 2, a back face of the center part 503 in the vicinity of the fore end section of the slide block 5 and a back face of the operating section 55 at the rear end section abut on the main body block 4, and a space is formed with the main body block 4 at an intermediate portion thereof. The operating section 55 makes contact with a front side face of the cylinder section 40 of the main body block 4.
As shown in
Then, the slide block 5 is retracted rearward with respect to the main body block 4. At this occasion, as shown in
The slide connecting section 52 pulls the replaceable blade 3 rearward at a rear end of the rear end side opening section 33 by retracting the slide block 5 as described above. Due to this, the replaceable blade 3 is attached to the cutter body 2 as shown in
Further, the wing section 56 of the slide block 5 slides toward the rear-side on the back face of the protruding engaging section 430 and reaches the rear end section 432 of the protruding engaging section 430. While the wing section 56 is sliding on the back face of the protruding engaging section 430, at least the flexible section 53 of the slide block 5 is elastically deformed so as to bend protrudingly toward the backside. Thus, when the wing section 56 of the slide block 5 reaches the rear end section 432 of the protruding engaging section 430, the wing section 56 naturally moves toward the front side by its restoring force, and is engaged at the rear end section 432 of the protruding engaging section 430.
Further, the wing section 56 is brought into a state of being retained from the front side by the front side retaining section 43 at the rear-side of the protruding engaging section 430.
Accordingly, the attached state S in which the replaceable blade 3 is attached to the cutter body 2 is realized (as shown in
In this attached state S, the slide block 5 is not in a state of particularly being bent.
Further, when detaching the replaceable blade 3 from the cutter body 2, the slide block 5 is moved forward with respect to the main body block 4 from the attached state S. At this occasion, the slide block 5 is caused to bend by pushing it toward the backside at the flexible section 53. That is, the wing section 56 protruding from the lower side opening section 401 at the lower face of the main body block 4 is pushed toward the back face side. Specifically, for example, the wing section 56 is pushed toward the backside by a finger or a nail of a user. In accompanying this, the slide block 5 is bent at the flexible section 53. Then, the wing section 56 is displaced toward the backside farther than the protruding engaging section 430 of the main body block 4, and a connected state of the wing section 56 and the protruding engaging section 430 is released. In this state, the wing section 56 moves forward while sliding on the back face of the protruding engaging section 430 by pushing the slide block 5 toward the foreside with respect to the main body block 4.
Further, when moving the slide block 5 forward, the replaceable blade 3 is moved toward the foreside by a rear-side opposing face 54 provided in the slide block 5, which pushes the rear end 34 of the replaceable blade 3. Due to this, the main body connecting section 42 of the main body block 4 relatively moves rearward inside the opening section 31 of the replaceable blade 3, and moves from the fore end side opening section 32 to the rear end side opening section 33. Then, when the slide block 5 is moved forward until the slide connecting section 52 abuts on the main body connecting section 42, both the main body connecting section 42 and the slide connecting section 52 are arranged in the rear end side opening section 33. In this state, the replaceable blade 3 can be detached to the front side.
Other configurations are similar to those of the first embodiment.
In the present embodiment also, similar advantageous effects as those of the first embodiment may be obtained.
Filing Document | Filing Date | Country | Kind | 371c Date |
---|---|---|---|---|
PCT/JP2011/070029 | 9/2/2011 | WO | 00 | 10/30/2013 |