JP2007090784A - Portable cutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable cutter having a base fittable with a parallel ruler so as to be able to easily disconnect. <P>SOLUTION: A securing member for anchoring the parallel ruler to the base is constructed by members comprising an operating levered member and another screwed member, and the operating member is made to be movable to the fixing member without demounting, so that the direction of the operating lever can be fixed to an arbitrary position. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a portable cutting machine having an improved parallel ruler fixing method.

As shown in FIGS. 12 and 13, the parallel ruler of the portable cutting machine is fixed to the guide portion 2 that slides in contact with the side surface of the work material 1 and the guide portion 2, and connects the base 4 and the guide portion 2. 14 and 15, the parallel ruler is fixed to the main body by inserting the rod part 3 into the parallel ruler mounting groove 5 provided on the base 4. 4 has a structure in which the rod portion 3 is fixed by a locking member 6 provided in 4, for example, a thumb bolt. (For example, see Patent Document 1)
Japanese Utility Model Publication No. 6-75701

  When the work material 1 is cut parallel to the side surface of the already-cut material 1 using a portable cutting machine, it is attached to the base 4 of the main body on the side surface of the work material 1 as shown in FIGS. A parallel ruler that guides while maintaining a parallel and arbitrary distance is used. As shown in FIGS. 14 and 15, the parallel ruler is fixed by the screw shaft force of the locking member 6 and the bar portion 3 of the parallel ruler. In the conventional locking member 6, since the operation portion 7 and the fixing portion 8 are integrated, the size of the operation portion 7 of the locking member 6 is the locking member 6 as shown in FIG. 16. The space around the main body mounting portion, that is, the main body and other parts indicated by the oblique lines in FIG. 16, so that the size can only be small within a two-dot chain line circle. It was necessary to operate 6 with great force.

  In addition, since the distance from the work material side surface to the cutting position changes with each operation, it is necessary to frequently loosen or tighten the locking member 6 each time the fixing position of the parallel ruler is moved. It was a burden.

  The objective of this invention is providing the portable cutting machine which can attach or detach a parallel ruler easily.

  The object is to fix a locking member for fixing the parallel ruler with a screw part formed on the base, and a fixing part having a screw part that can fix the parallel ruler to the base according to the screwed state; And a lever-shaped operation portion that can be selectively changed to a rotation-locked state that cannot rotate with respect to the fixed portion and a lock-released state that can rotate with respect to the fixed portion. The

  According to the present invention, the locking member for fixing the parallel ruler is screwed with the screw portion formed on the base, and the fixing having the screw portion capable of fixing the parallel ruler to the base according to the screwed state. And a lever-shaped operation unit that can be selectively changed to a rotation locking state that cannot rotate with respect to the fixing unit and a locking release state that can rotate with respect to the fixing unit. Because the operation part can be unlocked according to the situation and rotated with respect to the fixed part, the lever can be used to attach and detach the parallel ruler with a relatively weak force. The operability of the attaching / detaching operation can be improved.

  One embodiment of the portable cutting machine of the present invention will be described below with reference to FIGS.

  As shown in FIGS. 3 and 4, the locking member 6 constituting the present invention has a configuration having an operation portion 7 and a fixing portion 8. 3 shows a rotation locking state in which the operation unit 7 cannot rotate with respect to the fixing unit 8, and FIG. 4 shows a locking release state in which the operation unit 7 can rotate with respect to the fixing unit 8.

  The fixing portion 8 is attached to the base 4 so as to protrude into the parallel ruler attachment groove 5 by screwing with a screw portion formed on the base 4. The fixed portion 8 can attach the parallel ruler to the base 4 by pressing the parallel ruler rod portion 3 positioned in the parallel ruler attachment groove 5 with the lower end.

  As shown in FIGS. 5 and 6, the operating portion 7 has a lever shape extending in a direction away from the fixing portion 8. The operating portion 7 has a hole 10 through which the screw portion of the fixing portion 8 penetrates the shaft portion and a large number of fixing portions 8. It has a shape having a concave portion 9 (polygonal concave portion) that engages with a rectangular head (polygonal convex portion).

  Further, as shown in FIGS. 3 and 4, the operation unit 7 is operated between the operation unit 7 and the base 4 so that the operation unit 7 is engaged in the upward direction in the drawing, that is, the recess 9 and the head of the fixing unit 8 are engaged. An elastic body 11 that biases the portion 7 is provided.

  In addition, the operating portion 7 has a shape extending until it comes into contact with another member (an oblique line portion shown in FIG. 9) that protrudes above the base 4 during rotation, as shown in FIG. That is, the length dimension from the fixed part 8 to the opposite end part of the operation part 7 is larger than the length dimension from the fixed part 8 to another member adjacent thereto.

  In the initial state shown in FIG. 3, since the concave portion 9 and the head portion of the fixing portion 8 are engaged, when the operation portion 7 is rotated, the fixing portion 8 rotates and the parallel ruler is attached to and detached from the base 4. be able to. This attachment / detachment operation can be easily performed because the operation unit 7 has a lever shape, so that the operation unit 7 can be rotated with a relatively weak force.

  As shown in FIG. 4, when the operating portion 7 is moved to the base 4 side against the urging force of the elastic body 11 and the engagement between the concave portion 9 and the head portion of the fixing portion 8 is released, the operating portion 7 is moved. It can be rotated with respect to the fixed portion 8. Accordingly, when the operation unit 7 comes into contact with another member by rotating the operation unit 7 when the parallel ruler is attached, or when it is desired to change the operation unit 7 to an arbitrary position, as shown in FIG. By moving the button downward, the operation unit 7 can be changed to a position where it does not come into contact, or can be changed to an arbitrary position.

  For this reason, it is possible to attach and detach the parallel ruler with a relatively weak force by utilizing the principle of the lever, and to improve the operability of the attaching and detaching operation of the parallel ruler while using the lever-shaped operation unit 7. It becomes possible to attach and detach various parallel rulers having different thickness dimensions of the bar portion 3.

  Next, FIGS. 10 and 11 show another embodiment of the present invention. FIG. 10 shows an unlocking state in which the operation unit 7 can rotate with respect to the fixing unit 8, and FIG. 11 shows a rotation locking state in which the operation unit 7 cannot rotate with respect to the fixing unit 8.

  In the embodiment shown in the figure, a portion where the operation portion 7 can be rotated with the shaft portion 12 as a fulcrum and a portion which engages with the fixing portion 8 in the rotation direction are configured as separate members, and the fixing portion 8 is composed of a plurality of members. The operation unit 7 can be rotated with respect to the fixed unit 8 by positioning the operation unit 7 upward as shown in FIG. 10, and the operation unit 7 can be rotated as shown in FIG. Is positioned downward, the operation portion 7 is configured to be rotationally locked with respect to the fixed portion 8.

  Even in such a configuration, the parallel ruler can be attached and detached with a relatively weak force using the principle of the lever as in the above embodiment, and the operability of the attachment and detachment operation of the parallel ruler is improved. In addition, it is possible to attach and detach various parallel rulers having different thickness dimensions of the rod portion 3 while using the lever-shaped operation portion 7.

  In addition, although demonstrated using the portable circular saw as this embodiment, portable cutting machines, such as a jigsaw, may be sufficient.

The perspective view which shows one Embodiment of this invention portable cutting machine. The top view of FIG. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. The AA sectional view taken on the line of FIG. 2 which shows one operation state. The top view which shows one Embodiment of the operation part which comprises this invention portable cutting machine. FIG. 6 is a cross-sectional perspective view taken along line BB in FIG. 5. The side view which shows one Embodiment of the fixing | fixed part which comprises this invention portable cutting machine. The top view of the fixing | fixed part shown in FIG. The principal part expanded partial sectional view of FIG. The principal part enlarged view which shows other embodiment of this invention portable cutting machine. FIG. 11 is an operation state diagram of the operation unit illustrated in FIG. 10. The perspective view which shows an example of the cutting operation | work using the conventional portable cutting machine. The perspective view which shows an example of the conventional portable cutting machine. The top view of the portable cutting machine shown in FIG. The CC sectional view taken on the line of FIG. The principal part expanded partial sectional view of FIG.

Explanation of symbols

1 is a work material, 2 is a guide portion, 3 is a rod portion, 4 is a base, 5 is a parallel ruler mounting groove, 6 is a locking member, 7 is an operating portion of the locking member, and 8 is a fixing portion of the locking member. , 9 is a groove of the operation portion, 10 is a hole of the operation portion, 11 is an elastic body, 12 is a pin member, and 100 is a cutting machine body.

Claims (3)

A main body with a built-in electric motor, a blade that is driven by the electric motor to reciprocate or rotate, and cuts the work material. A mobile having a base for supporting, and a locking member for detachably attaching a parallel ruler for guiding the main body so that the cutting operation can be performed while keeping the blade side surface and the work material side surface parallel and at an arbitrary distance. Cutting machine for
The locking member is screwed with a screw portion formed on the base, and a fixing portion having a screw portion capable of fixing the parallel ruler to the base according to the screwed state, and non-rotatable with respect to the fixing portion A portable cutting machine having a lever-shaped operation portion that can be selectively changed to a rotation-locked state and a lock-released state that is rotatable with respect to the fixed portion.   A polygonal part is provided in the fixed part, and a polygonal concave part that can be engaged with the polygonal convex part is provided in the operation part, and the operation part moves in the axial direction of the fixed part with respect to the fixed part. The portable cutting machine according to claim 1, wherein the portable cutting machine can be changed between the rotationally locked state and the unlocked state. The portable cutting device according to claim 1 or 2, wherein a length dimension from the fixed part to the end part of the operation part is larger than a length dimension from the fixed part to another member adjacent thereto. Machine.

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