JPH0716763U - cutter - Google Patents

Abstract

(57) [Summary] [Purpose] In the cutter blade insertable type cutter,
Improve safety during use by making simple improvements. A cutter including a cutter blade 1, a frame body 2 that holds the cutter blade 1 so that the cutter blade 1 can be taken in and out, and a movable operation unit 3 for taking the cutter blade 1 in and out
Is provided with a support member 6 that engages so as to be relatively movable in the moving direction of the movable operation portion, and fixing means 7 that fixes the support member 6 to the frame body 2 is provided to restore the movable operation portion 3 and the support member 6 to a restoring force. A movable allowance which is connected by a stretchable member 8 having a and which limits the movable allowance of the movable operation part 3 with respect to the support member 6 to a predetermined constant length between the movable operation part 3 and the support member 6. A cutter with a regulation mechanism.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a cutter, such as a folding blade type cutter, which involves taking in and out the cutter blade when it is used.

[0002]

[Prior art]

 As represented by a folding blade type cutter, a cutter that involves the operation of inserting and removing the cutter blade during use is widely known. It is used in various industrial fields, for example, in the work of cutting an object, for example, for sampling to measure the characteristics of a product.

A conventional cutter of this kind is constructed, for example, as shown in FIG. In the figure, 31 indicates a cutter blade held in a frame 32 so as to be slidable in and out. The cutter blade 31 is connected to a movable operation member 33, and the movable operation member 33 is slid in an arrow direction. Thus, the tip end side is taken in and out. Reference numeral 34 denotes a positioning / fixing portion 34 for temporarily stopping and fixing the movable operation member 33. The movable operation member 33 is locked at any position of the positioning / fixing portion 34. The blade edge of the cutter blade 31 is projected from the desired amount frame 32 and is fixed at that position.

[0004]

[Problems to be solved by the device]

 However, in the above-described conventional cutter, the amount of the blade edge of the cutter blade 31 is not constant, and if the blade is unnecessarily extended, it may be dangerous depending on the work. In addition, even when the cutter blade 31 is not actually used for cutting while using the cutter, the tip end side of the cutter blade 31 is often left out of the frame body 32. It may cause an unexpected situation. Also, once the tip side of the cutter blade 31 is removed from the frame 32, the cutter blade 31 remains fixed at that position, but during work involving the use of the cutter, for example, when the operator is conscious of something other than cutting work. If it is moved, there is a possibility that the cutting edge of the cutter blade 31 is temporarily forgotten. At such times, the above-mentioned unexpected situations are likely to occur.

The present invention pays attention to such a problem, and greatly enhances the safety in use by making a simple improvement in a generally widely used cutter blade retractable type cutter, In particular, it aims to eliminate the risks associated with leaving the cutter blade exposed.

Another object of the present invention is to eliminate the risk associated with over-cutting the cutter blade.

[0007]

[Means for Solving the Problems]

 A cutter of the present invention for this purpose inserts and removes a cutter blade, a frame body for holding the cutter blade so that it can be taken in and out, and a cutter blade that is connected to the cutter blade and is movably engaged with the frame body. In a cutter provided with a movable operation section for moving the movable operation section to the frame body at a position opposite to the cutter blade with respect to the movable operation section, the frame can be relatively moved in the movable operation section moving direction. In addition to providing a supporting member to be engaged, a fixing means for fixing the supporting member to the frame body is provided, and the movable operating portion and the supporting member are connected by an elastic member having a restoring force, and A movable margin regulating mechanism for regulating the movable margin of the supporting member to a predetermined fixed length is provided between the movable operating section and the supporting member.

[0008]

[Action]

 In such a cutter, by moving the movable operation part to the support member side when using the cutter, the blade edge of the cutter blade is easily pushed out of the frame body, but the movable operation part and the support member provide a restoring force. Since the elastic members are connected to each other, once the force applied to the movable operating portion is released, the cutting edge of the cutter blade is automatically returned to the inside of the frame by the restoring force of the elastic member. Therefore, it is possible to reliably prevent an unexpected situation that would occur if you accidentally touch the cutter while the cutter blade is still exposed. Also, in order to keep the cutter blade out for use, it is necessary to hold the movable operation part with your finger, which increases the awareness that the cutter is in use.

Further, the support member is movable in the moving direction of the movable operation portion, and is fixed to the frame body by the fixing means after being moved to a substantially arbitrary position. Therefore, when the length of the folding blade type cutter blade becomes short, the position of the support member can be moved to a position closer to the blade protruding side. When the cutter blade becomes short, the operating position of the movable operating part for ejecting the cutting edge comes to the position on the protruding side of the frame more than the cutting edge, but by changing the position of the supporting member, the movable operating part and the supporting member are moved. The relative positional relationship with, that is, the expansion margin of the elastic member does not have to be substantially changed. As a result, it is possible to always obtain a stable operation of the movable operation portion relative to the support member.

Furthermore, the movable allowance of the movable operation unit is restricted to a predetermined length by the movable allowance restricting mechanism. The allowance of the cutter blade is determined by the movable allowance (operation allowance) of the movable operation part with respect to the fixed position where the support member is located. It is regulated to a predetermined fixed length (however, it does not always match the movable allowance regulated by the movable allowance regulating mechanism). As a result, the cutter blade cannot be unnecessarily extended for a long time, and the risk associated with overextending the cutter blade is eliminated.

[0011]

【Example】

 Hereinafter, preferred embodiments of the cutter of the present invention will be described with reference to the drawings. 1 and 2 show the configuration of a cutter according to an embodiment of the present invention. In the figure, reference numeral 1 denotes a cutter blade which is slidably held in the frame body 2, and 3 is provided in the frame body 2 so as to be movable relative to the frame body 2 (slideable). The dynamic operation part (movable operation member) is shown. The cutter blade 1 is connected to the movable operation member 3 via an auxiliary member 4 and a connecting portion 5, which are integrally slidably provided with the movable operation member 3, and moves the movable operation member 3 in the arrow direction. This allows the tip to be inserted and removed.

Reference numeral 6 denotes a support member that is movably engaged with the frame body 2 in the moving direction of the movable operation member 3. The support member 6 is provided with a manually operable screw 7 as fixing means for fixing the support member 6 to the frame body 2. The support member 6 is moved in the direction of the arrow along the frame 2 and then fixed in position by the screw 7. The movable operation section 3 and the support member 6 are connected by a tension spring 8 as an elastic member having a restoring force. The elastic member may be composed of another member, for example, an elastic body (for example, a rubber body).

One end of the tension spring 8 is connected to the support member 6 side by a connecting portion 9, and the other end is connected to the movable operation member 3 side via a connecting portion 10. The connecting portion 10 on the side of the movable operation member 3 has a pin means 11 (for example, a pin means composed of a screw) extending in a direction perpendicular to the paper surface of FIG.

The support member 6 is provided with an elongated hole 12 extending in the movable direction of the movable operation member 3. The pin means 11 of the connecting portion 10 is slidably engaged with the elongated hole 12 at the end edge of the elongated hole 12. Therefore, the pin means 11 can move only within the range of the length of the elongated hole 12, and can move within a predetermined fixed length. Since the pin means 11 is fixed to the movable operation member 3 side, the movable allowance of the movable operation member 3 is also restricted to the predetermined fixed movable allowance. That is, the elongated hole 12 and the pin means 11 constitute a movable control mechanism for the movable operating member 3 in the present invention.

In the cutter configured as described above, when the movable operating member 3 is applied with force from the fingertip toward the opposite side of the supporting member 6 during use, the blade tip of the cutter blade 1 is outside the frame body 2. Is sticking out. At this time, the tension spring 8 connecting the movable operation member 3 and the support member 6 is stretched.

When the force applied to the movable operating member 3 is released by releasing the cutter from the hand or releasing the finger from the movable operating member 3 at the end of the work or at the time of interruption, the tension spring 8 of the tension spring 8 is released. Due to the restoring force, the movable operation member 3 is pulled back to the support member 6 side. With this operation, the cutter blade 1 connected to the movable operation member 3 is automatically housed in the frame body 2.

Therefore, since the cutter blade 1 is automatically stored in the frame body 2 when the hand or finger is removed from the cutter after using the cutter, an unexpected situation occurs when the cutter blade that has been left untouched is touched by the hand. It is prevented and work safety is secured.

Further, in order to hold the cutter blade 1 in the extended state, it is necessary to hold the movable operation member 3 with a finger, and by keeping this operation state, the operator is currently using the cutter. It is possible to give a consciousness that it is, and safety is further improved from this aspect as well.

When performing an operation of ejecting the cutter blade 1, the movable operation member 3 is moved to the blade ejection side, and the movement allowance is restricted by the elongated hole 12 and the pin means 11. That is, as shown in FIG. 2, when the movable operating member 3 is moved to the blade protruding side, the pin means 11 comes into contact with the blade protruding side edge of the elongated hole and cannot move any further. That is, the movable allowance L of the movable operating member 3 is regulated to a predetermined fixed length.

According to this regulation, the movement allowance of the cutter blade 1 connected to the movable operation member 3 is also regulated, and the protrusion allowance D of the blade tip is regulated to a predetermined fixed amount. However, L and D do not necessarily match.

In this way, since the protrusion margin D of the cutter blade 1 is always kept constant, the blade does not protrude too much. By setting this constant blade allowance to an appropriate value, it is possible to always ensure safe cutter work.

Further, when the length of the folding blade type cutter blade 1 is shortened, the position of the support member 6 may be changed to a position closer to the blade protruding side. This position change can be performed by a simple operation in which the screw 7 is once loosened, the support member 6 is moved, and then the screw 7 is tightened again. With respect to the support member 6 whose position has been changed, similarly to the above, the feeding allowance of the cutter blade 1 is always kept constant.

In the above-described embodiment, as shown in FIG. 3, the locking member 13 is provided on the tip side of the frame body 2, and the auxiliary member 4 can be locked in the locking portion 14. With this structure, it is possible to prevent the auxiliary member 4, and thus the movable operation member 3, from moving too far to the blade protruding side with respect to the frame body 2. Incidentally, without this locking member 13, when the support member 6 is largely repositioned to the blade protruding side, the auxiliary member 4 and the movable operating member 3 may move too much to the blade protruding side.

[0024]

[Effect of device]

 As described above, in the cutter of the present invention, the movable operating member and the supporting member are connected by the elastic member having a restoring force, and the fixing position of the supporting member can be changed appropriately, and the movable operating member is movable. The length of the blade is regulated within a certain length so that the length of protrusion of the blade is always within a certain length, so the cutter blade is automatically stored in the frame due to the restoring force of the elastic member to ensure safety during use. In addition to greatly improving the efficiency, it is possible to completely eliminate the risk of over-cutting the cutter blade, and realize an extremely safe and practical cutter.

[Brief description of drawings]

FIG. 1 is a plan view of a cutter according to an embodiment of the present invention.

FIG. 2 is a plan view showing another usage state of the cutter shown in FIG.

FIG. 3 is a partial plan view of a tip portion of a frame body of a cutter according to another embodiment of the present invention.

FIG. 4 is a plan view of a conventional cutter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cutter blade 2 Frame body 3 Movable operation member 4 Auxiliary member 5 Connecting part 6 Supporting member 7 Screw as fixing means 8 Tension spring as expanding / contracting member 9, 10 Connecting part 11 Pin means 12 Long hole

Claims (3)

[Scope of utility model registration request] 1. A cutter blade, a frame body for holding the cutter blade so as to be able to be taken in and out, and a movable operation portion for taking in and out the cutter blade that is connected to the cutter blade and engages with the frame body so as to be relatively movable. In a cutter with and
A supporting member that engages with the frame body so as to be relatively movable in the moving direction of the movable operation portion is provided at a position of the frame body on the side opposite to the cutter blade with respect to the movable operation portion. A fixing means for fixing the movable operation portion and the support member to each other by an elastic member having a restoring force, and a movable operation portion for the support member between the movable operation portion and the support member. A cutter provided with a movable allowance regulation mechanism for restricting the movable allowance to a predetermined constant length. 2. An elongated hole provided in the support member, wherein the movable allowance limiting mechanism extends in a movable direction of the movable operation portion,
The cutter according to claim 1, further comprising: pin means provided on the movable operation portion side, slidably engaged with the elongated hole, and locked at an end of the elongated hole. 3. The cutter according to claim 1, wherein the elastic member comprises a tension spring.