JP4234535B2 - Circular saw ruler - Google Patents

Description

  The present invention relates to a ruler used to accurately cut a material to be cut such as a plywood along a predetermined straight line with a portable electric circular saw.

  As a conventional circular saw ruler, as shown in FIG. 6, a parallel movable ruler 13 in which a plurality of vertical plates 12 are fixed to an elongated parallel plate 11, and a parallel plate of a rectangular parallel movable ruler 13 on one longitudinal side thereof. 11 and the fixed scale 14 in which the accommodation groove 14a which accommodates the vertical plate 12 is formed, the pressing bolt 15 which fixes the parallel movable scale 13 to the fixed scale 14 in a state where the parallel movable scale 13 is accommodated in the fixed scale 14, and the fixed scale What is comprised with the needle tip volt | bolt 16 which fixes 14 to the cutting position of a to-be-cut material is known (refer patent document 1).

  This ruler is a state in which the parallel movable measure 13 is pulled out by a distance from one end of the base of the circular saw to the side surface of the saw blade and fixed with the pressing bolt 15, and the side of the parallel movable measure 13 is made to coincide with the cutting line of the workpiece. Then, the fixed scale 14 is fixed on the material to be cut with the needle tip bolt 16, and then the pressing bolt 15 is loosened to accommodate the parallel movable scale 13 in the receiving groove 14a of the fixed scale 14, and the pedestal of the circular saw is placed on the material to be cut. The cutting work is advanced while the pedestal side end is pressed against the fixed scale 14.

  By the way, when the surface of the material to be cut has irregularities, the ruler having the above configuration is dangerous because the pedestal of the circular saw cannot slide smoothly on the material to be cut and is caught by the irregularities. Further, since the pressing bolt 15 is used to fix the parallel movable measure 13 and the fixed measure 14, there is a problem that it takes time for the operation.

  On the other hand, a ruler for a circular saw provided with a sliding surface of a circular saw pedestal has been proposed in Patent Document 2, but this ruler does not have the parallel movable scale 13 referred to in Patent Document 1, but a saw blade. The operation to match the cutting line is complicated, and the ruler is easy to move even during cutting due to the saw blade blurring, resulting in lack of accuracy.

JP-A-8-192402 JP-A-11-239913

  The problem to be solved by the present invention is to solve these conventional problems, and even if the surface of the material to be cut has irregularities and gaps, the circular saw can slide smoothly without being caught. An object of the present invention is to provide a ruler for a circular saw that can be cut easily, and that eliminates the need for drawing, and that can be quickly fixed to the cutting position of the ruler and has good operability.

The configuration of the present invention that solves this problem is as follows.
1) An elongated attachment plate parallel to the substrate is provided on the long side of the rectangular substrate so as to be able to advance and retreat in the short direction of the substrate, and the elongated guide plate is provided on the upper surface of the substrate at a predetermined distance from the long side of the substrate. A plurality of grooves having a predetermined width are formed on the lower surface of the substrate, and an elongated link member having a thickness that does not protrude from the lower surface of the substrate is rotatably supported in each groove. The side wall is used as a stopper that restricts the rotation of the link member, the attachment plate is pivotally attached to the tip of each link member, a parallelogram link is formed by the substrate, the link member, and the attachment plate, and it can be folded into a parallelogram shape. to be able to advance and retreat in the lateral direction of the substrate is accompanied plate by a, circular saw ruler 2 and to be able to cut the workpiece while sliding along the guide plate carrying the circular saw to the substrate) the substrate The above-mentioned 1 in which a plurality of pin holes for inserting pins for fixing the substrate onto the material to be cut are provided in the substrate 3) Circular saw ruler 3) The circular saw ruler 4) in which the pin hole for inserting the pin for fixing the link member in the state where the attachment plate is advanced is provided in the substrate 4) Guide The ruler for circular saw as described in any one of 1) to 3) above, wherein the plate is provided so as to be slidable in the short direction of the substrate . On the ruler.

  In the present invention, a plurality of pins are inserted along the cutting line of the material to be cut, and a ruler for a circular saw is placed on the material to be cut, and then the attachment plate is completely opened to contact each of the pins to cover the substrate. It fixes with a pin on a cutting material, closes an attachment board, mounts a circular saw on a board | substrate, and cut | disconnects the side edge against a guide board on a board | substrate.

  Therefore, since the circular saw cuts while sliding on a flat substrate, even if the material to be cut has irregularities, it can be smoothly and safely operated without any influence. In addition, the attachment plate is attached to the board so that the amount of drawer is regulated, so there is no need to fix the attachment plate, and the board can be quickly fixed on the cutting material with a pin. Can be easily done in a short time.

  The accessory plate of the present invention has a plurality of grooves of a predetermined width formed on the lower surface of the substrate, and an elongated link member having a thickness that does not protrude from the lower surface of the substrate is rotatably supported in each groove. The structure in which the inner side wall is used as a stopper that restricts the rotation of the link member and the attachment plate is pivotally attached to the tip of each link member forms a parallelogram link between the substrate, link member, and attachment plate, and can be folded. It is preferable that the accessory plate can maintain an accurate parallel state with the guide plate.

  Also, a plurality of pin holes for inserting pins for fixing the substrate onto the material to be cut are provided in the substrate so that the ruler is not displaced by the vibration of the circular saw during cutting. Furthermore, if a pin hole for inserting a pin for fixing the link member in the state in which the attachment plate is advanced is provided in the substrate, the alignment of the ruler is facilitated without deviation. In addition, each member of a board | substrate, a guide plate, an attached plate, and a link member is comprised with a plastic, a metal, and wood. Embodiments of the present invention will be specifically described below with reference to the drawings.

  FIG. 1 is a perspective view of a circular saw ruler according to the embodiment, FIG. 2 is a perspective view of the back side of the circular saw ruler according to the embodiment, and FIGS. 3 to 5 are explanatory views showing a use state of the circular saw ruler according to the embodiment. is there. In the figure, 1 is a substrate, 1a is a movable groove, 1b is a sliding surface, 1c is a pin hole, 1d is a side wall, 1e is a gap, 2 is an attachment plate, 3 is a link member, 4 is a guide plate, 4a is a screw 4b is a scale, 5 is a pin hole, 6 is a pin, 7 is a circular saw, 7a is a pedestal, 7b is a saw blade, 7c is a motor, L is a cutting line, P is a material to be cut, and Pa is a cutting part.

  As shown in FIGS. 1 and 2, the circular saw ruler of this embodiment uses a rectangular plate material made of plywood having a length of 1000 mm, a width of 170 mm, and a thickness of 7 mm as a substrate 1, and a depth of 3 on the back surface of the substrate 1. Three movable grooves 1a extending in the width direction of 5 mm are formed, and a thin guide plate 4 made of plastic having a width of 70 mm and a thickness of 7 mm is fixed on the surface of the substrate 1 with screws 4a in the short direction of the substrate 1. A sliding surface 1b on which the base 7a of the circular saw 7 slides is formed between the guide plate 4 and the long side of the substrate 1, and the position of any of the movable grooves 1a. The pin hole 1 c is formed in the substrate 1, and a plurality of pin holes 5 are formed in the longitudinal side portion of the substrate 1.

  A link member 3 made of an aluminum alloy having a length of 190 mm, a width of 20 mm, and a thickness of 3 mm is inserted into each movable groove 1 a of the substrate 1 such that each tip protrudes from one longitudinal side of the substrate 1 opposite to the guide plate 4. Inserted and pivotally supported at the center so as to be rotatable in the movable groove 1a, and the side wall 1d of each movable groove 1a is used as a stopper for restricting the rotation of the link member 3, and the length is 1000 mm, the width is 15 mm, and the thickness is A slender attachment plate 2 made of a 6 mm aluminum alloy is pivotally attached to the protruding tip portion of each link member 3, and the attachment plate 2 is attached to be foldable into a parallelogram in a state in which the attachment plate 2 is held parallel to the longitudinal one side of the substrate 1. The scale 4b used to adjust the distance from the tip of the base plate 2 to the guide plate 4 is formed in a state where the base plate 2 is completely opened on the upper surfaces on both short sides of the substrate 1. .

  In this embodiment, as shown in FIG. 3, first, a plurality of pins 6 are inserted along a cutting line L of a material to be cut P (for example, a plywood for concrete formwork), and the splicing plate 2 is completely opened from the substrate 1. The pin 6 is inserted into the pin hole 1c to fix the accessory plate 2. In this state, the side edge of the accessory plate 2 is brought into contact with each pin 6 and the substrate 1 is placed on the material P to be cut. The pins 6 are inserted into the pin holes 5 of the guide plate 4 to fix the substrate 1 on the workpiece P.

  Thereafter, the guide plate 4 is adjusted and fixed at a position separated from the side edge of the attachment plate 2 by a distance from one end of the pedestal 7a of the circular saw 7 to the side surface of the saw blade 7b, as shown in FIG. Then, the pin 6 is removed, and the accessory plate 2 is moved to the substrate 1 side and completely folded. At this time, if the groove width is set so that the gap 1e can be formed between the link member 3 and the movable groove 1a, wood chips do not accumulate and the accessory plate 2 can be reliably folded. Then, as shown in FIG. 5, each pin 6 on the workpiece P is pulled out to place the base 7a of the circular saw 7 on the sliding surface 1b of the substrate 1, and the left end of the base 7a is brought into contact with the guide plate 4. In contact with each other, the circular saw 7 is operated to press the pedestal 7a against the guide plate 4 and precisely cut along the determined cutting line L.

  Since the present embodiment is configured in this way, the base 7a of the circular saw 7 is cut while sliding on the flat substrate 1, so that even if the workpiece P has irregularities, it will be affected. I was able to work smoothly and safely. Further, since the attachment plate 2 is attached to the substrate 1 so that the amount of drawing is regulated, the fixing operation of the attachment plate 2 is not required, and the substrate 1 is fixed on the workpiece P with the pins 6. It was quick and a series of work could be done easily in a short time.

  The ruler for a circular saw of the present invention can be applied to processing of a material that can be cut with a circular saw, such as a plaster board and a plastic board, in addition to a wood board such as a plywood board.

It is a perspective view of the ruler for circular saws of an Example. It is a perspective view of the back side of the ruler for circular saws of an Example. It is explanatory drawing which shows the use condition of the ruler for circular saws of an Example. It is explanatory drawing which shows the use condition of the ruler for circular saws of an Example. It is explanatory drawing which shows the use condition of the ruler for circular saws of an Example. It is a perspective view of the ruler for conventional circular saws.

Explanation of symbols

1 substrate 1a movable groove 1b sliding surface 1c pin hole 1d side wall 1e gap 2 attachment plate 3 link member 4 guide plate 4a screw 4b scale 5 pin hole 6 pin 7 circular saw 7a base 7b saw blade 7c motor 11 parallel plate 12 vertical Plate 13 Parallel movable scale 14 Fixed scale 14a Receiving groove 14b, 14c Bolt hole 15 Pressing bolt 16 Needle tip bolt L Cutting line P Material to be cut Pa Cutting part

Claims (5)

An elongated accessory plate parallel to the substrate is provided on the long side of the rectangular substrate so as to be able to advance and retreat in the short direction of the substrate, and the elongated guide plate is parallel to the upper surface of the substrate at a predetermined distance from the long side of the substrate. A plurality of grooves having a predetermined width are formed on the lower surface of the substrate, and an elongated link member having a thickness that does not protrude from the lower surface of the substrate is rotatably supported in each groove. As a stopper that restricts the rotation of the link member, the attachment plate is pivotally attached to the tip of each link member, a parallelogram link is formed by the substrate, the link member, and the attachment plate, and it can be folded into a parallelogram shape. This is a circular saw ruler that allows the attachment plate to move forward and backward in the short direction of the substrate, and allows the circular saw to be placed on the substrate and cut along the guide plate to cut the material to be cut. The ruler for a circular saw according to claim 1 , wherein a plurality of pin holes into which pins for fixing the substrate onto the workpiece are inserted are provided in the substrate . The ruler for a circular saw according to any one of claims 1 to 2, wherein a pin hole into which a pin for fixing the link member is inserted in a state where the attachment plate is advanced is provided in the substrate . The ruler for circular saws according to any one of claims 1 to 3, wherein the guide plate is provided so as to be slidable in the short direction of the substrate . The ruler for a circular saw according to claim 4, wherein a scale for measuring a fixed position of the guide plate is provided on the substrate .

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