JP2005186544A - Circular saw, furring strip fastening tool for circular saw, and ruler for circular saw - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a circular saw capable of easily conducting a cutting operation to adjust the length of a furring strip to the length between two poles and exactly cutting at a cutting position, to provide a furring strip fastening tool for the circular saw enabling a smooth and easy operation of cutting the furring strip to the length between the poles with the circular saw, and to provide a ruler for the circular saw capable of stably exactly guiding the circular saw to enable an easy and linear cut. <P>SOLUTION: The circular saw 1 has a flat plate-like base portion 13 removably attachably fastened to a lower surface of a plinth 2, a saw blade insertion hole 15 on the base side, a pole contact portion 16 on the front surface side fastened to the lower surface of the base portion 13, and a pole contact portion 17 on the side surface side fastened perpendicularly to the pole contact portion 16 on the front surface side. The ruler 51 for the circular saw is equipped with a ruler fastening plate 52 and a ruler main body 54 having a circular saw sliding linear protruding portion 57. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a circular saw that uses a motor to rotate a circular saw blade to cut a member to be cut, and a circular saw blade edge fixing that is used together with a circular saw to cut a member to be cut such as a drum edge by the circular saw. The present invention relates to a ruler for a circular saw for cutting a plate-like member to be cut such as a concrete panel with a tool and a circular saw.

  Conventionally, a circular saw that rotates a circular saw blade with a motor to cut a member to be cut such as a trunk edge or a concrete panel has been used. Such a circular saw generally includes a flat pedestal portion having a long hole-like saw blade insertion hole, and the circular saw blade has a lower side inserted through the saw blade insertion hole and the lower surface of the pedestal portion. It is arrange | positioned so that it may protrude to the side. Thereby, at the time of a cutting operation, the member to be cut is cut by the saw blade while the lower surface of the pedestal is brought into contact with the member to be cut and the circular saw is slid along the member to be cut.

By the way, in a building such as a house, a trunk edge is used as a base material for attaching a panel panel or the like of a wall. The case edge may be attached parallel to the pillar or perpendicular to the pillar, that is, horizontally. When mounting the rim horizontally, the rim is usually installed between two standing columns, so the length of the rim is the same as the length between the columns so that it can be accurately placed between the columns. It is necessary to cut it. In addition, a trunk edge is normally cut | disconnected in the construction site of a building.
Hereinafter, a conventional method for cutting a body edge will be described with reference to the drawings.
FIG. 10A is a main part front view showing a conventional method for cutting a trunk edge, and FIG. 10B is a main part plan view showing a conventional method for cutting a trunk edge.
In FIG. 10, 100 and 101 are two standing columns, 102 is a trunk edge, 102 a is one end of the trunk edge 102, 103 is a worker's left hand, 104 is a worker's right hand, and 105 is a worker's right hand. A hand saw which is a cutting tool held by the right hand.
As shown in FIG. 10, the operator holds the torso 102 with his left hand 103 and presses one end 102 a of the torso 102 against the side of the column 100. By strongly pressing the one end portion 102a against the pillar 100, the one end portion 102a is prevented from sliding with respect to the pillar 100, and the trunk edge 102 is held horizontally. Next, a predetermined portion on the other end side of the trunk edge 102 is brought into contact with the front surface side of the pillar 101, and the trunk edge 102 is cut along the side face of the pillar 101 on the pillar 100 side by the hand saw 105 held by the right hand 104. To do. At this time, as shown in FIG. 10B, the body edge 102 is cut obliquely so that the cut surface of the body edge 102 is inclined with respect to the side surface of the column 101, and the body edge 102 is sandwiched between the columns 100 and 101. Sometimes it can be fixed.
In this way, the trunk edge 102 is cut so as to be the same as the length between the two columns 100 and 101. As a cutting tool to be used, not only the hand saw 105 but also the circular saw as described above can be used.

  Further, a ruler for a circular saw is used to cut a plate-like member to be cut such as a concrete panel in a straight line using the circular saw as described above. Patent Document 1 includes a corner fixing accessory plate and an end linear longitudinal guide plate that can be held and fixed at an arbitrary angle with respect to the corner fixing accessory plate. A circular saw guide plate having a straight edge for guiding a circular saw cutting blade to guide a circular saw at a fixed distance from the guide protrusion piece in a projecting manner is provided. A circular saw guide ruler formed integrally with the guide plate is disclosed.

JP-A-9-169002

However, the above conventional techniques have the following problems.
(1) In the conventional cutting method of the trunk edge, the cutting position of the trunk edge and the inclination of the cutting surface are determined based on the experience of the operator, so the cutting position is shifted or the cutting plane with the intended inclination cannot be cut. In other words, a dimensional error is caused, and the length is often short and cannot be used.
(2) In addition, when a circular saw is used in the conventional method of cutting the body edge, it is difficult to cut accurately even a skilled person because it cuts while supporting a heavy circular saw with the right hand, In addition, there is a problem that it is easy to damage the pillar and the operator himself with a saw blade and lacks safety.
(3) Also, because the cutting operation is performed with the right hand while gripping the torso with the left hand and pressing one end against the column, one end of the torso may be detached from the column or the torso may not be horizontal during cutting. It was easy. For this reason, development of the trunk edge fixing tool for pressing one end part of a trunk edge against a pillar and holding it horizontally is strongly desired.
(4) In the circular saw guide ruler described in Patent Document 1, the circular saw base is brought into contact with the guide projection piece, and the circular saw cutting blade is brought into contact with the straight edge to guide it. The saw cutting blade has a problem that it is easy to deviate from the intended cutting line and is difficult to cut into a straight line accurately.
(5) Further, since the corner fixing accessory plate of the circular saw guide ruler is fixed along the corner of the plate-like member to be cut, the vicinity of the corner can be cut, but a position away from the corner, for example, a plate shape When cutting the vicinity of the center of the member to be cut or the like, it is necessary to form a long circular saw guide plate or use another ruler or the like, which has a problem of lack of usability.

The present invention solves the above-described conventional problems, and can easily perform a cutting operation for adjusting the length of the trunk edge to the length between the two columns, and can accurately cut at the cutting position. An object of the present invention is to provide a circular saw capable of giving a desired inclination to the cut surface and sliding the plate-like member to be cut in a straight line without sliding along the ruler for the circular saw. And
The present invention solves the above-described conventional problems, and can securely hold the barrel edge between the two columns, and smoothly cut the barrel edge with a circular saw according to the length between the columns. An object of the present invention is to provide a circular saw barrel edge fixture that can be easily performed.
The present invention solves the above-described conventional problems, can stably and accurately guide a circular saw, can easily cut a plate-like member to be cut linearly, and can cut a plate-like workpiece. An object of the present invention is to provide a ruler for a circular saw that can be cut easily and accurately even in the vicinity of the central portion away from the end of the member.

In order to solve the above problems, the circular saw of the present invention has the following configuration.
The circular saw according to claim 1 of the present invention is pivotally attached to the pedestal portion at a flat base portion, a saw blade insertion hole formed in the pedestal portion, and front and rear portions of the saw blade insertion hole. An upper safety cover portion, a motor portion disposed and fixed on a side portion of the upper safety cover portion, an upper side fixed to a drive shaft of the motor portion, and an upper side disposed inside the upper safety cover portion, A circular saw having a circular saw blade inserted into the saw blade insertion hole and a handle portion formed on the upper portion of the motor portion, and detachable by a base fixing means on the lower surface of the pedestal portion A fixed plate-like base portion; a base-side saw blade insertion hole formed in the base portion so as to communicate with the saw blade insertion hole; and a base-side saw blade insertion hole side of the lower surface of the base portion. The front side column abutting portion fixed to the portion and the front side column abutting to the rear portion of the base side saw blade insertion hole Orthogonally it has a side surface side poles abutting portion which is fixed, the configuration with the.

About the circular saw comprised as mentioned above, the usage method is demonstrated below.
(1) When cutting the barrel edge to adjust the length to be the same as or slightly longer than the distance between the two columns, first press one end of the barrel edge against the side of one column, The side surface on the other end side is brought into contact with the side surface on the near side of the other column, that is, the front surface. Next, the front side column contact portion of the circular saw is brought into contact with the front surface of the column and the side surface side column contact portion is brought into contact with the side surface of the column at the corner below the portion where the body edge of the other column is contacted. Abut. Subsequently, the motor unit is driven to rotate the saw blade, and while holding the front side column contact portion and the side column contact portion in contact with the column, the handle portion is gripped and the circular saw is moved upward along the column. And the barrel edge is cut by a rotating saw blade. Thereby, the length of the trunk edge can be adjusted to a length that is the same as or slightly longer than the distance between the two columns. Since the length of the cut barrel edge is the same as or slightly longer than the distance between the two pillars, both ends of the trunk edge are pressed against the sides of each pillar, and the trunk edge is placed between the two pillars. It is built.
(2) When cutting a member to be cut such as a concrete panel other than the body edge, remove the base portion from the pedestal portion, bring the lower surface of the pedestal portion into contact with the member to be cut, drive the motor portion and use a saw blade The circular saw is moved on the member to be cut by gripping the handle portion, and the member to be cut is cut by the rotating saw blade. Thereby, various members to be cut can be cut.

As described above, since the circular saw according to the first aspect of the present invention is configured, it has the following operation.
(1) Since the base portion is detachably fixed to the lower surface of the pedestal portion, when cutting the trunk edge, the base portion is attached to the pedestal portion by the base fixing means and the member to be cut other than the trunk edge is cut. Can be used for cutting various members to be cut by removing the base portion from the pedestal portion.
(2) Since the base side saw blade insertion hole is formed to communicate with the saw blade insertion hole of the pedestal portion when the base portion is attached to the pedestal portion, the lower side of the saw blade is the saw blade of the pedestal portion It is inserted into the insertion hole and the base side saw blade insertion hole of the base part and protrudes to the lower surface side of the base part. Thereby, a trunk edge can be cut | disconnected by the lower surface side of a base part.
(3) A front side column contact portion fixed to the side of the base side saw blade insertion hole on the lower surface of the base portion, and a rear portion of the base side saw blade insertion hole fixed at right angles to the front side column contact portion. Since the front side column contact portion and the side column contact portion are in contact with the front and side surfaces of the corners of the column, the circular saw is used as a column. By sliding along the top and bottom, the circular saw can be stably slid without shaking, and the saw blade does not tilt with respect to the sliding direction, so the cutting work can be performed accurately and smoothly. Can do. In addition, since the circular saw can be slid stably, the handle can be operated with the other hand only while holding the barrel edge horizontally between the two pillars with one hand. Therefore, it is possible to safely perform the cutting operation of the trunk edge alone without requiring skill.
(4) By forming the front-side column abutting portion with a predetermined thickness, when the front-side column abutting portion is brought into contact with the front surface of the column, the space between the lower surface of the base portion and the front surface of the column A gap corresponding to the thickness of the front side column abutting portion can be formed on the front side, and a circular saw is slid along the column and a barrel edge is inserted into the gap so that the barrel edge rotates in the gap. It can be cut with a blade.
(5) Since the side-side column abutting portion is fixed to the base portion so as to be orthogonal to the front-side column abutting portion, the front-side column abutting portion and the side-side column abutting portion are provided at the corners of the column. Can be brought into contact with each other without any gap, and the circular saw is not shaken and has excellent stability.
(6) By providing the side-side column abutting portion at a position where the column-abutting surface of the side-side column abutting portion is substantially flush with the saw blade, the barrel edge is set to the distance between the two columns. Can be cut to approximately the same length. Further, by providing the side-side column abutting portion at a position where the column-abutting surface of the side-side column abutting portion is slightly closer to the front-side column abutting portion than the saw blade, It is possible to cut slightly longer than the distance between them, so that the trunk edge can be pushed between the columns and horizontally placed between the columns to be firmly fixed.
(7) The upper safety cover part pivotally attached to the pedestal part at the front and rear parts of the saw blade insertion hole, the motor part disposed and fixed on the side of the upper safety cover part, and the upper part fixed to the drive shaft of the motor part A circular saw blade whose side is disposed inside the upper safety cover portion and whose lower side is inserted into the saw blade insertion hole, so that the upper safety cover portion is rotated with respect to the pedestal portion, and the motor portion In addition, the angle of the saw blade with respect to the pedestal can be varied, and the cutting angle of the saw blade can be adjusted. By adjusting the cutting angle of the saw blade, the cut surface of the barrel edge can be inclined at a predetermined angle, and even if the barrel edge is slightly longer than the distance between the columns, the barrel edge can be easily moved between the columns. And can be laid horizontally.
(8) Since the upper side of the saw blade is disposed inside the upper safety cover portion, the saw blade is not exposed to the operator side and is excellent in safety.

  Here, as the base fixing means for detachably fixing the base part to the lower surface of the pedestal part, a screw fixing means such as a thumbscrew screwed into a screw hole communicating with the base part and the pedestal part, A fitting fixing means such as an ant can be used. Also, positioning means for accurately positioning and fixing the base portion to the lower surface of the pedestal portion so that the saw blade insertion hole and the base side saw blade insertion hole communicate with each other is formed on the upper surface of the base portion and the lower surface of the pedestal portion. A concave portion and a convex portion that are formed can be used.

  A circular saw according to a second aspect of the present invention is the circular saw according to the first aspect, further comprising a cutting angle adjusting unit that changes a cutting angle of the saw blade and fixes it at a predetermined angle, and the cutting angle adjusting unit includes: A movable portion fixed to the front end portion of the upper safety cover portion, an angle adjustment plate standing on the front end portion of the pedestal portion and disposed at the front portion of the movable portion, and drilled in the angle adjustment plate. A circular arc-shaped slide hole portion, and an angle fixing screw that is slidably inserted into the slide hole portion and is screwed to the movable portion to fasten and fix the angle adjusting plate and the movable portion. have.

With this configuration, in addition to the operation of the first aspect, the following operation is provided.
(1) The upper safety cover part can be rotated with respect to the pedestal part, the angle of the motor part and the saw blade with respect to the pedestal part can be varied, the cutting angle of the saw blade can be adjusted, and the cutting angle of the saw blade can be adjusted. After changing, the upper safety cover part and the motor part are fixed to the pedestal part by inserting the angle fixing screw into the slide hole part and screwing it on the movable part, and tightening and fixing the angle adjusting plate and the movable part. Thus, the saw blade can be fixed at a desired cutting angle.

Here, as the cutting angle of the saw blade, when the barrel edge is cut, it is preferable that the angle of the saw blade can be adjusted within a range of 0 ° to 6 ° to 7 ° with respect to the side surface of the column. Thereby, an inclined surface of 0 ° to 7 ° can be formed on the cut surface obtained by cutting the trunk edge, and the trunk edge can be easily inserted between the columns and can be firmly fixed between the columns. .
The slide hole portion is formed in an arc shape having a central angle such that the cutting angle of the saw blade can be varied as described above. It is also possible to provide a scale plate that is integrally formed with the movable portion or the upper safety cover portion and is provided along the angle adjusting plate so that the cutting angle of the saw blade can be set by visual observation. The scale plate is provided with an angle scale, and the angle scale corresponding to the side of the angle adjusting plate is formed so as to represent the cutting angle of the saw blade. When the scale plate is provided, the cutting angle of the saw blade can be adjusted while visually observing the angle scale, and can be accurately adjusted to a desired angle.

  According to a third aspect of the present invention, the circular saw according to the first or second aspect has a configuration in which the thickness of the front-side column contact portion is larger than the thickness of a member to be cut such as a trunk edge. Have.

With this configuration, in addition to the operation of the first or second aspect, the following operation is provided.
(1) Since the thickness of the front-side column abutting portion is formed larger than the thickness of the member to be cut such as the trunk edge, when the front-side column abutting portion is brought into contact with the front surface of the column, A gap larger than the thickness of the front-side column contact portion, that is, the thickness of the member to be cut such as the trunk edge, can be formed between the lower surface and the front surface of the column, and when the circular saw is slid along the column The barrel edge is securely inserted into the gap, and the barrel edge can be cut by a saw blade that rotates in the gap.

  A circular saw according to a fourth aspect of the present invention is the circular saw according to any one of the first to third aspects, wherein the circular saw is provided on a lower portion of the saw blade and is rotatably disposed around the saw blade. A lower safety cover portion provided, a cover rotating rail portion protruding from a side portion of the lower safety cover portion on the front side column contact portion side, and a lower surface of the front side column contact portion A rotating plate disposed and fixed rotatably at a rear end portion of the front side column contact portion; an elastic member inserted between the rotating plate and the front side column contact portion; A sliding wheel portion disposed at a tip portion of the rotating plate and configured to rotate the lower safety cover portion by pressing the cover rotating rail portion by rotating the rotating plate. Yes.

With this configuration, in addition to the operation of any one of claims 1 to 3, the following operation is provided.
(1) Since the rotating plate disposed along the lower surface of the front side column abutting portion is provided, the rotating plate and the side surface column abutting portion are brought into contact with the front surface and the side surface of the corner portion of the column. By sliding the circular saw up and down along the pillars, the circular saw can be stably slid without shaking, and the saw blade does not tilt with respect to the sliding direction. The cutting operation can be performed smoothly.
(2) When the rotating plate is brought into contact with the front surface of the column, the rotating plate is pressed against the front surface of the column to rotate the rotating plate toward the front side contact portion, and the sliding wheel portion rotates the cover. The lower safety cover can be exposed to the lower surface side of the base part by pressing the moving rail part, and the lower safety cover part can be rotated backward together with the pressed cover turning rail part. There is no need to rotate the part to expose the saw blade, and the operability is excellent.

Here, as a means for rotatably fixing the rotating plate at the rear end portion of the front side column contact portion, a hinge may be used, or it may be loosely attached with a screw.
A coil spring or the like having one end fixed to the lower safety cover portion and the other end fixed to the motor portion or the like can be provided. As a result, the lower safety cover can be rotated to expose the lower side of the saw blade by pressing the rotating plate against the front surface of the column at the time of cutting. The safety cover portion is biased by the coil spring and can be rotated to cover the saw blade, and the saw blade is automatically exposed only at the time of cutting, so that the workability is excellent and the safety is also excellent.

  A circular saw according to claim 5 of the present invention is the invention according to any one of claims 1 to 4, further comprising positioning means for positioning the base portion with respect to the pedestal portion, The positioning means comprises a linear concave portion parallel to the saw blade formed on the lower surface of the pedestal portion, and a positioning convex portion formed on the upper surface of the base portion and fitted into the linear concave portion. Have.

With this configuration, in addition to the operation of any one of claims 1 to 4, the following operation is provided.
(1) Since the positioning means comprising the linear concave portion on the lower surface of the pedestal portion and the positioning convex portion on the upper surface of the base portion is provided, the base portion is placed so that the saw blade insertion hole and the base side saw blade insertion hole communicate with each other. It can be accurately positioned and fixed to the lower surface of the part.
(2) Since the positioning means can accurately position the relative position of the side column contact portion and the saw blade and fix the base portion to the pedestal portion, the desired length of the trunk edge can be accurately obtained. Can be cut into pieces. For example, when the column contact surface of the cut side column contact portion and the saw blade are substantially on the same plane, the body edge is cut to approximately the same length as the distance between the two columns. Can do. In addition, when the column contact surface of the side column contact portion is positioned so that it is slightly closer to the front column contact portion than the saw blade, the body edge is cut slightly longer than the distance between the two columns. Thereby, it is possible to push the trunk edge between the columns so as to be horizontally placed between the columns and to be firmly fixed.
(3) When using a circular saw with the base part removed from the pedestal, the linear recess formed on the lower surface of the pedestal is slidably fitted into the circular saw sliding linear convex part of the circular saw ruler. By doing so, the circular saw can be linearly slid along the circular saw sliding linear convex portion, and a member to be cut such as a concrete panel can be linearly cut.

  Here, as long as the positioning convex portion is formed at a position corresponding to the linear concave portion, it may be linear, or may be a plurality of convex portions arranged in parallel on a straight line. Further, in order to position the pedestal portion and the base portion in the front-rear direction, a front-rear portion and a rear-end portion on the lower surface of the pedestal portion and the upper surface of the base portion may be provided with concave and convex portions for positioning in the front-rear direction . Thereby, it is possible to accurately position not only in the left-right direction but also in the front-rear direction and fix the base portion to the pedestal portion, and it is possible to accurately cut the trunk edge and the like without any deviation in the cutting position.

  According to a sixth aspect of the present invention, there is provided a circular saw body edge fixing tool for circular saws for cutting a body edge constructed between two pillars by a length between the two pillars. A column fixing portion that is detachably fixed to a side portion of one of the columns, a rod-shaped column side support portion having one end portion fixed to the column fixing portion, and a column side support portion. And a trunk edge side support portion connected to the other end portion at a predetermined angle via a connection plate.

This configuration has the following effects.
(1) It is connected to a column fixing part that is detachably fixed to the side part of one column, a rod-shaped column side support part in which one end part is fixed to the column fixing part, and the other end part of the column side support part And a body edge side support portion provided continuously at a predetermined angle via a plate, so that the column fixing portion of the circular saw body edge fixing tool is placed on the side surface of one of the columns between the two columns. The pillar side support part is fixed to the pillar by piercing, pressing one end part of the trunk edge against the side surface of the other pillar, and bringing the upper surface of the trunk edge into contact with the lower surface of the trunk side support part, By gripping the support part and the trunk edge together with the hand, the trunk edge can be held and fixed horizontally between the two pillars, and the work of cutting the trunk edge with a circular saw according to the length between the pillars It can be performed smoothly and easily.
(2) Since the column side support part and the trunk edge side support part are connected by the connection plate, the angle of the trunk edge side support part with respect to the column side support part can be easily changed, and it is easy to hold the trunk edge horizontally for cutting work. It can be done smoothly.

Here, as the column side support part and the trunk edge side support part, rod-shaped members formed of lightweight synthetic resin, wood, metal or the like are used. In particular, it is preferable that the trunk edge side support portion is formed to have a thickness and thickness that can be overlapped on the trunk edge and gripped by the hand.
As the connection plate, a synthetic resin plate, a plate-like hard rubber, or the like can be used. The connecting plate can also be formed integrally with the column side support part and / or the trunk edge side support part.

  According to a seventh aspect of the present invention, there is provided a circular saw barrel edge fixture according to the sixth aspect of the present invention, comprising a grip hand holding portion disposed on an upper portion of the trunk edge side support portion. ing.

With this configuration, in addition to the operation of the sixth aspect, the following operation is provided.
(1) Since the hand holding the torso side support part can be held by the grip hand holding part, the torso side support part does not move away from the hand even if the finger of the gripped hand is spread, and the column fixing part is unintentionally removed from the column. It is possible to prevent the circular saw body edge fixture from falling off when it comes off or when the column fixing part is removed from the column and moved to another operation.
(2) Since the hand gripped on the trunk edge side support part is held and fixed, the trunk edge gripped together with the lower part of the trunk edge side support part is easy to grip and has excellent workability.

  Here, a band made of cloth, rubber or the like can be used as the gripping hand holding portion.

  The ruler for a circular saw according to claim 8 of the present invention is a ruler for a circular saw for cutting a plate-like member to be cut such as a concrete panel in a straight line, and is fixed to the upper surface of the plate-like member to be cut. A ruler fixing plate, a ruler slide fitting portion formed on one side of the ruler fixing plate, and a ruler body slidably disposed along the ruler slide fitting portion, The ruler main body is formed on one side of the ruler main body and formed on a main body side fitted portion that slidably fits on the ruler slide fitting portion, and on the other side of the ruler main body. A circular saw sliding linear convex portion into which the linear concave portion of the circular saw according to Item 5 is slidably fitted.

This configuration has the following effects.
(1) The circular saw is slidably fitted into the circular saw sliding linear convex portion of the circular saw ruler by sliding the linear concave portion formed on the lower surface of the pedestal portion into a circular saw sliding linear convex portion. It is possible to cut a member to be cut such as a concrete panel in a straight line.
(2) Since the main body fitted portion can be slidably fitted to the ruler slide fitting portion and the ruler main body can be slid with respect to the ruler fixing plate, cutting to cut the plate-like member to be cut Even if the length of the planned line is longer than the ruler body, it can be handled by sliding and moving the ruler body with respect to the ruler fixing plate, even in the vicinity of the center part away from the end of the plate-shaped member to be cut Can be cut easily and accurately.

  The ruler for a circular saw according to claim 9 of the present invention is the ruler according to claim 8, wherein one end of the ruler fixing plate on the side of the ruler main body is pivotable in a horizontal direction by a hinge portion. It has the structure provided with the fixed positioning member.

With this configuration, in addition to the operation of the eighth aspect, the following operation is provided.
(1) When determining the position at which the ruler fixing plate is fixed on the plate-shaped member to be cut using a fastening member such as a light child, the positioning member is rotated to be orthogonal to the ruler body, and the tip of the positioning member The fixing position of the ruler fixing plate can be determined by matching the cutting line with the planned cutting line. At this time, the positioning member is formed in such a length that the tip portion thereof coincides with the position of the saw blade when the linear concave portion of the circular saw is fitted to the circular saw sliding linear convex portion, Since the position of the saw blade coincides with the planned cutting line, the plate-like member to be cut can be accurately cut along the planned cutting line.
(2) Further, when performing the cutting operation, the positioning member is rotated to a position along the ruler fixing plate, so that the cutting operation is not disturbed and the workability is excellent.

  The ruler for a circular saw according to claim 10 of the present invention is for fixing the ruler fixing plate to the plate-like member to be cut with a fixing member such as a light element in the invention according to claim 8 or 9. And having two or more fastening holes formed in the ruler fixing plate.

With this configuration, in addition to the operation of the eighth or ninth aspect, the following operation is provided.
(1) Since the ruler fixing plate has two or more fixing holes, a fixing member such as a light element can be inserted into the fixing hole and stuck into the member to be cut to fix the ruler fixing plate. Fixing and unlocking can be performed easily and quickly.

As described above, according to the circular saw, the circular saw body edge fixture and the circular saw ruler of the present invention, the following advantageous effects can be obtained.
According to the invention of claim 1,
(1) Since the base portion is detachably fixed to the lower surface of the pedestal portion, when cutting the trunk edge, the base portion is attached to the pedestal portion by the base fixing means and the member to be cut other than the trunk edge is cut. By removing the base portion from the pedestal portion, it is possible to provide a circular saw excellent in applicability that can be used for cutting various members to be cut.
(2) A front-side column contact portion fixed to the side of the base-side saw blade insertion hole on the lower surface of the base portion, and a rear portion of the base-side saw blade insertion hole fixed at right angles to the front-side column contact portion. Since the front side column contact portion and the side column contact portion are in contact with the front and side surfaces of the corners of the column, the circular saw is used as a column. By sliding along the top and bottom, the circular saw can be stably slid without shaking, and the saw blade does not tilt with respect to the sliding direction, so the cutting work can be performed accurately and smoothly. It is possible to provide a circular saw with excellent stability.
(3) Since the circular saw can be slid steadily, the handle is held by the other hand only while holding the barrel edge horizontally between the two pillars with one hand. Thus, it is possible to provide a circular saw with excellent handleability that can be safely operated by one person without skill, by cutting the barrel edge.
(4) By forming the front-side column abutting portion with a predetermined thickness, when the front-side column abutting portion is brought into contact with the front surface of the column, the space between the lower surface of the base portion and the front surface of the column A gap corresponding to the thickness of the front side column abutting portion can be formed on the front side, and a circular saw is slid along the column and a barrel edge is inserted into the gap so that the barrel edge rotates in the gap. A circular saw that can be cut with a blade can be provided.
(5) Since the side-side column abutting portion is fixed to the base portion so as to be orthogonal to the front-side column abutting portion, the front-side column abutting portion and the side-side column abutting portion are provided at the corners of the column. Can be brought into contact with each other without any gap, and a circular saw having excellent stability in which the circular saw does not shake can be provided.
(6) By providing the side-side column abutting portion at a position where the column-abutting surface of the side-side column abutting portion is substantially flush with the saw blade, the barrel edge is set to the distance between the two columns. The side column contact portion can be cut at substantially the same length, and the column contact surface of the side column contact portion is positioned closer to the front side column contact portion than the saw blade. By providing, the circular saw which can cut | disconnect a trunk edge slightly longer than the distance between two pillars can be provided.
(7) The upper safety cover part pivotally attached to the pedestal part at the front and rear parts of the saw blade insertion hole, the motor part disposed and fixed on the side of the upper safety cover part, and the upper part fixed to the drive shaft of the motor part A circular saw blade whose side is disposed inside the upper safety cover portion and whose lower side is inserted into the saw blade insertion hole, so that the upper safety cover portion is rotated with respect to the pedestal portion, and the motor portion The angle of the saw blade with respect to the pedestal can be varied, the cutting angle of the saw blade can be adjusted, and by adjusting the cutting angle of the saw blade, the cutting surface of the trunk edge can be inclined at a predetermined angle. In addition, it is possible to provide a circular saw capable of easily and firmly laying the trunk edge between the columns even when the trunk edge is slightly longer than the distance between the columns.
(8) Since the upper side of the saw blade is disposed inside the upper safety cover portion, it is possible to provide a circular saw excellent in safety in which the saw blade is not exposed to the operator side.

According to invention of Claim 2, in addition to the effect of Claim 1,
(1) The upper safety cover part can be rotated with respect to the pedestal part, the angle of the motor part and the saw blade with respect to the pedestal part can be varied, the cutting angle of the saw blade can be adjusted, and the cutting angle of the saw blade can be adjusted. After changing, the upper safety cover part and the motor part are fixed to the pedestal part by inserting the angle fixing screw into the slide hole part and screwing it on the movable part, and tightening and fixing the angle adjusting plate and the movable part. Thus, a circular saw that can fix the saw blade at a desired cutting angle can be provided.

According to invention of Claim 3, in addition to the effect of Claim 1 or 2,
(1) Since the thickness of the front-side column abutting portion is formed larger than the thickness of the member to be cut such as the trunk edge, when the front-side column abutting portion is brought into contact with the front surface of the column, A gap larger than the thickness of the front-side column contact portion, that is, the thickness of the member to be cut such as the trunk edge, can be formed between the lower surface and the front surface of the column, and when the circular saw is slid along the column It is possible to provide a circular saw in which the barrel edge is securely inserted into the gap, and the barrel edge can be cut by a saw blade rotating in the gap.

According to invention of Claim 4, in addition to the effect of any one of Claims 1 to 3,
(1) Since the rotating plate disposed along the lower surface of the front side column abutting portion is provided, the rotating plate and the side surface column abutting portion are brought into contact with the front surface and the side surface of the corner portion of the column. By sliding the circular saw up and down along the pillars, the circular saw can be stably slid without shaking, and the saw blade does not tilt with respect to the sliding direction. A circular saw that can perform a cutting operation smoothly can be provided.
(2) When the rotating plate is brought into contact with the front surface of the column, the rotating plate is pressed against the front surface of the column to rotate the rotating plate toward the front side contact portion, and the sliding wheel portion rotates the cover. The lower safety cover can be exposed to the lower surface side of the base part by pressing the moving rail part, and the lower safety cover part can be rotated backward together with the pressed cover turning rail part. It is possible to provide a circular saw excellent in operability that does not require an operation of rotating the part and exposing the saw blade.

According to the invention of claim 5, in addition to the effect of any one of claims 1 to 4,
(1) Since the positioning means comprising the linear concave portion on the lower surface of the pedestal portion and the positioning convex portion on the upper surface of the base portion is provided, the base portion is placed so that the saw blade insertion hole and the base side saw blade insertion hole communicate with each other. It can be accurately positioned and fixed to the lower surface of the part, and the positioning means can accurately position the relative position of the side column contact part and the saw blade to fix the base part to the base part. Therefore, it is possible to provide a circular saw capable of accurately cutting the barrel edge to a desired length.
(2) When using a circular saw with the base part removed from the pedestal, the linear recess formed on the lower surface of the pedestal is slidably fitted into the circular saw sliding linear convex part of the circular saw ruler. By doing so, it is possible to provide a circular saw that can linearly cut a member to be cut such as a concrete panel by sliding the circular saw linearly along the circular saw sliding linear convex portion.

According to the invention of claim 6,
(1) It is connected to a column fixing part that is detachably fixed to the side part of one column, a rod-shaped column side support part in which one end part is fixed to the column fixing part, and the other end part of the column side support part And a body edge side support portion provided continuously at a predetermined angle via a plate, so that the column fixing portion of the circular saw body edge fixing tool is placed on the side surface of one of the columns between the two columns. The pillar side support part is fixed to the pillar by piercing, pressing one end part of the trunk edge against the side surface of the other pillar, and bringing the upper surface of the trunk edge into contact with the lower surface of the trunk side support part, By gripping the support part and the trunk edge together with the hand, the trunk edge can be held and fixed horizontally between the two pillars, and the work of cutting the trunk edge with a circular saw according to the length between the pillars It is possible to provide a circular saw barrel edge fixture that can be performed smoothly and easily.
(2) Since the column side support part and the trunk edge side support part are connected by the connection plate, the angle of the trunk edge side support part with respect to the column side support part can be easily changed, and it is easy to hold the trunk edge horizontally for cutting work. It is possible to provide a circular saw barrel edge fixture that can be smoothly performed.

According to invention of Claim 7, in addition to the effect of Claim 6,
(1) Since the hand holding the torso side support part can be held by the grip hand holding part, the torso side support part does not move away from the hand even if the finger of the gripped hand is spread, and the column fixing part is unintentionally removed from the column. It is possible to provide a circular saw barrel fixing device with excellent usability that prevents the circular saw barrel fixing device from falling off when it is detached or when the column fixing portion is removed from the column and moved to another work. .
(2) Since the hand gripped on the trunk edge side support part is held and fixed, it is possible to provide a circular saw trunk edge fixture excellent in workability in which the trunk edge gripped together with the lower part of the trunk edge side support part is easy to grip. it can.

According to the invention described in claim 8,
(1) The circular saw is slidably fitted into the circular saw sliding linear convex portion of the circular saw ruler by sliding the linear concave portion formed on the lower surface of the pedestal portion into a circular saw sliding linear convex portion. It is possible to provide a ruler for a circular saw that can be cut along a straight line and linearly cut a member to be cut such as a concrete panel.
(2) Since the main body fitted portion can be slidably fitted to the ruler slide fitting portion and the ruler main body can be slid with respect to the ruler fixing plate, cutting to cut the plate-like member to be cut Even if the length of the planned line is longer than the ruler body, it can be handled by sliding and moving the ruler body with respect to the ruler fixing plate, even in the vicinity of the center part away from the end of the plate-shaped member to be cut A circular saw ruler that can be cut easily and accurately can be provided.

According to the invention of claim 9, in addition to the effect of claim 8,
(1) When determining the position at which the ruler fixing plate is fixed on the plate-shaped member to be cut using a fastening member such as a light child, the positioning member is rotated to be orthogonal to the ruler body, and the tip of the positioning member It is possible to provide a ruler for a circular saw that can be easily positioned and can determine the fixing position of the ruler fixing plate by matching the planned cutting line with the portion to be cut.
(2) When performing a cutting operation, a ruler for a circular saw excellent in workability can be provided by rotating the positioning member to a position along the ruler fixing plate without interfering with the cutting operation.

According to invention of Claim 10, in addition to the effect of Claim 8 or 9,
(1) Since the ruler fixing plate has two or more fixing holes, a fixing member such as a light element can be inserted into the fixing hole and stuck into the member to be cut to fix the ruler fixing plate. It is possible to provide a ruler for a circular saw excellent in workability that can be fixed and released easily and quickly.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
(Embodiment 1)
FIG. 1 is a left side view of the main part of the circular saw in the first embodiment, FIG. 2 is a right side view of the main part of the circular saw in the first embodiment, and FIG. 3 is a circle in the first embodiment. FIG. 4 is a plan view of a main part of the circular saw according to the first embodiment.
In the figure, 1 is a circular saw in the first embodiment, 2 is a rectangular flat plate-shaped pedestal portion, 3 is a long hole-shaped saw blade insertion hole formed in the pedestal portion 2, and 4 is an upper surface of the pedestal portion 2. This is a motor unit disposed on the side of the saw blade insertion hole 3. The motor unit 4 is fixed to a side portion of an upper safety cover unit 6 to be described later, and the upper safety cover unit 6 is fixed to the pedestal unit 2 at the upper part of the saw blade insertion hole 3. 4 a is a drive shaft of the motor unit 4, 4 b is a handle unit fixed to the upper part of the motor unit 4, 4 c is a motor drive switch disposed at the front end of the handle unit 4 b, and 5 is a drive of the motor unit 4 A circular saw blade fixed to the shaft 4a and having a lower side inserted into the saw blade insertion hole 3, and a semicircular upper safety cover portion fixed to the side of the motor portion 4 and covered on the upper portion of the saw blade 5 , 7a, 7b are front and rear shaft mounting portions for mounting the front and rear end portions of the upper safety cover portion 6 and the pedestal portion 2 before and after the saw blade insertion hole 3, and 8 is a front shaft mounting portion 7a. And a cutting angle adjusting portion 9 for changing and fixing the cutting angle of the saw blade 5 to a predetermined angle with the rear shaft mounting portion 7b as the center, and 9 is a plate-like movable integrally fixed to the front end portion of the upper safety cover portion 6. The part 9a is a protracted plate-shaped scale plate that is integrally formed with the movable part 9 and has an angle scale on the front. Reference numeral 10 denotes an angle adjustment plate that is erected and fixed to the front end of the pedestal portion 2 and is provided along the front portions of the movable portion 9 and the scale plate 9a, and 11 is an arc-shaped slide hole portion (perforated in the angle adjustment plate 10). Reference numeral 12 denotes an angle fixing screw that is slidably inserted into the slide hole portion 11 and is screwed to the movable portion 9 to fasten and fix the angle adjusting plate 10 and the movable portion 9. Here, the space for inserting the handle between the handle portion 4b and the motor portion 4 is formed in a long hole shape enough for the middle finger, ring finger, and little finger of the handle to enter, and the upper surface of the motor portion 4 of the handle portion 4b. It is preferable that the height from is as low as possible. Thus, by providing the handle portion 4b close to the center of gravity of the circular saw 1, that is, close to the motor portion 4, it is possible to improve the stability when the circular saw 1 is lifted and operated by the handle portion 4b. The switch 4c is provided in front of the handle portion 4b so that the handle portion 4b can be pressed with the index finger when the handle portion 4b is held with the middle finger, ring finger, or little finger. If the height of the handle portion 4b is low, a switch may not be provided inside the handle portion 4b. However, the switch 4c can be pressed by providing the switch 4c on the front or upper surface of the handle portion 4b. it can.

  In the figure, reference numeral 13 denotes a flat base portion detachably fixed along the lower surface of the pedestal portion 2, 14 denotes a thumbscrew as a base fixing means for screwing and fixing the base portion 13 to the pedestal portion 2, 15 Is a base-side saw blade insertion hole formed in the base portion 13 so as to communicate with the saw blade insertion hole 3, and 16 is fixed to the rear side of the base-side saw blade insertion hole 15 on the lower surface of the base portion 13. The front-side column abutting portion provided, 17 is a side-side column abutting portion fixed perpendicularly to the front-side column abutting portion 16 at the rear portion of the base-side saw blade insertion hole 15, and 18 is the saw blade 5. It is a lower safety cover portion that is covered at the lower portion and is disposed so as to be rotatable around the saw blade 5. The lower safety cover portion 18 is disposed so as to rotate around the saw blade 5 and be accommodated in the upper safety cover portion 6. Reference numeral 19 denotes a cover-rotating rail portion protruding from the side of the lower safety cover portion 18 on the front-side column contact portion 16 side, and reference numeral 20 denotes a rotation disposed along the lower surface of the front-side column contact portion 16. Reference numeral 21 denotes a rotating plate attachment portion that rotatably fixes the rotating plate 20 at the rear end portion of the front side column contact portion, and reference numeral 22 denotes between the rotation plate 20 and the front side column contact portion 16. An inserted elastic member made of a leaf spring, a rubber material, or the like, 23 is a sliding wheel portion that is attached to the upper surface of the distal end portion of the rotating plate 20 and presses the cover rotating rail portion 19 by the rotation of the rotating plate 20. Is a linear concave portion (see FIG. 4) formed on both sides of the lower surface of the pedestal portion 2, and 25 is a linear positioning convex portion formed on the upper surface of the base portion 13 and fitted into the linear concave portion 24.

FIG. 5 is a plan view of the main part showing the lower surface of the pedestal part with the base part removed. Note that the saw blade 5 and the lower safety cover portion 18 are omitted for easy understanding.
In FIG. 5, reference numeral 31 denotes a concave portion for positioning in the front-rear direction formed at the front end portion of the lower surface of the pedestal portion 2, and 32 denotes a pedestal side screwing hole into which a thumbscrew 14 as a base fixing means is screwed.
Here, the concave portion 31 is fitted into a convex portion (not shown) protruding from the front end portion of the upper surface of the base portion 13. Thereby, the base part 13 can be positioned in the front-rear direction with respect to the base part 2.

Next, a circular saw body edge fixture will be described.
FIG. 6A is a front view of a main part of a circular saw body edge fixing tool used for cutting the body edge by a circular saw, and FIG. 6B is a use state diagram of the circular saw body edge fixing tool.
In the figure, reference numeral 41 denotes a circular saw body edge fixing tool, 42 denotes a column fixing part formed in a needle mountain shape or a flat plate shape that is detachably fixed to the side part of the pillar 101, and 42 a is implanted in the column fixing part 42. Needle-shaped portion 43, a rod-shaped column-side support portion with one end fixed to column fixing portion 42, 44 a leaf spring, a hard rubber plate, a soft synthetic resin plate, etc. at the other end portion of column-side support portion 43 The support part 46 is connected to the torso side through the connecting plate 45, 46 is a band-shaped gripping hand holding part disposed at the top of the torsion side support part 44, and 47 is a torso of one end of the gripping hand support part 46. It is a hook-and-loop fastener that is fixed to the edge side support portion 44. Here, the column side support part 43, the trunk edge side support part 44, and the connection plate 45 may be integrally formed of a soft synthetic resin plate.
In addition, 100 and 101 are pillars, 102 is a trunk edge, 102a is one end part of the trunk edge 102, 103 is an operator's left hand, These are the same as what was demonstrated in FIG. A description will be omitted.

A method of using the circular saw body edge fixture 41 configured as described above will be described below.
First, the needle-like portion 42a of the column fixing portion 42 is pierced into the side surface of the column 101 on the column 100 side, and the column fixing portion 42 is fixed to the column 101 in a posture inclined downward. Next, the torso side support portion 44 is gripped by the left hand 103, the hook-and-loop fastener 47 is fastened, and the grip hand holding portion 46 is held by the left hand 103. Subsequently, one end 102a of the trunk edge 102 is pressed against the side surface of the column 100, the other end side of the trunk edge is brought into contact with the side surface 101a on the near side of the column 101, and the upper surface of the trunk edge 102 is supported on the trunk edge side. The left side hand 103 grips the trunk edge side support part 44 and the trunk edge 102 which are brought into contact with the lower surface of the part 44 and overlapped. The position where the torso 102 is gripped with the left hand 103 is appropriately determined so that the torso 102 is horizontal. Thereby, the trunk edge 102 can be held horizontally between the columns 100 and 101.

Next, the cutting | disconnection operation | movement of the trunk | drum 102 by the circular saw 1 is demonstrated using FIG.7 and FIG.8.
7 is a side view of the main part showing the cutting operation of the trunk edge, FIG. 8A is a plan view of the main part showing the cutting operation of the trunk edge, and FIG. 8B is a tilt angle of the saw blade. FIG.
As shown in FIGS. 7 and 8, the handle portion 4 b of the circular saw 1 is gripped by the right hand 104, and the rotating plate 20 is placed on the front side surface 101 a of the column 101 with respect to the column 101 at a position below the trunk edge 102. And the side surface of the side surface column contact portion 17 of the circular saw 1 is brought into contact with the side surface 101b of the column 101 on the column 100 side. Further, the rotating plate 20 is pressed against the side surface 101a of the column 101, and the rotating plate 20 is rotated to the front side contact portion 16 side. With this rotation, the sliding wheel portion 23 presses the cover rotating rail portion 19, and the lower safety cover portion 18 together with the pressed cover rotating rail portion 23 rotates the outer periphery of the saw blade 5 rearward to saw blade. The lower side of 5 is exposed.
In this state, when the circular saw 1 is slid upward along the pillar 101 while the switch 4c is pushed with the index finger of the right hand 104 and the motor unit 4 is driven to rotate the saw blade 5, the barrel is exposed by the exposed saw blade 5. The edge 102 can be cut. Here, since the thickness of the front end portion of the front side column contact portion 16 is larger than the thickness of the trunk edge 102, the trunk edge 102 is inserted between the lower surface of the base portion 13 and the side surface 101 a of the column 101. A space is formed. The trunk edge 102 is cut by the saw blade 5 in the space. Further, since the saw blade 5 is disposed so as to be flush with the side surface of the side surface column contact portion 17, the trunk edge 102 has a distance between the columns 100 and 101 at the position of the side surface 101 b of the column 101. Cut to the same length.
Here, as shown in FIG. 8 (b), the cutting angle of the saw blade 5 can be inclined by the cutting angle adjusting section 8, and the body edge 102 can be cut obliquely to form an inclined cut surface.
When the cutting angle of the saw blade 5 is tilted by the cutting angle adjusting unit 8, first, the angle fixing screw 12 is loosened and the motor unit 4 is tilted with respect to the pedestal unit 2 as shown in FIG. The motor part 4 is fixed to the upper safety cover part 6, and the upper safety cover part 6 is pivotally attached to the pedestal part 2 by a front pivot part 7a and a rear pivot part 7b (see FIGS. 1 and 2). The motor part 4 rotates about the front pivot part 7a and the rear pivot part 7b, and the saw blade 5 is inclined with respect to the pedestal part 2 accordingly. At this time, the inclination angle α of the saw blade 5 is preferably 6 ° to 7 ° with respect to the side surface 101b of the column 101. Note that the inclination angle α of the saw blade 5 can be set while visually confirming it because the angle indicated by the end side 10a of the angle adjusting plate 10 indicates the cutting angle in the angle scale on the scale plate 9a. After setting a desired cutting angle, the angle of the saw blade 5 is fixed by fastening the angle fixing screw 12 and fastening and fixing the angle adjusting plate 10 and the movable portion 9. The upper safety cover portion 6 may be fixedly attached to the pedestal portion 2 at a predetermined angle by the front shaft attachment portion 7a and the rear shaft attachment portion 7b, and the angle of the saw blade 5 may be fixed at a desired cutting angle. it can.
Thus, by cutting the cutting angle of the saw blade 5 and cutting the barrel edge 102 as described above, the cut surface of the barrel edge 102 can be made an inclined surface, and the barrel edge 102 is formed between the columns 100 and 101. And can be firmly fixed by being sandwiched.

Since the circular saw 1 and the circular saw body edge fixture 41 in the first embodiment are configured as described above, they have the following operations.
(1) When cutting the trunk edge 102 in order to adjust the distance between the two pillars 100 and 101 to be the same as or slightly longer than the distance between the two pillars 100 and 101, The column side support portion 43 is fixed to the column 101 in a posture inclined downward, fixed to the side surface 101b, one end portion 102a of the trunk edge 102 is pressed against the side surface of the column 100, and the upper surface of the trunk edge 102 is supported on the trunk edge side support portion 44. The left side hand 103 grips the trunk edge side support portion 44 and the trunk edge 102 which are in contact with each other. Thereby, the trunk edge 102 can be held horizontally between the columns 100 and 101. In addition, since the column side support portion 43 and the trunk edge side support portion 44 are connected by a bendable connecting plate 45, the angle of the trunk edge side support portion 44 with respect to the column side support portion 43 can be easily changed, and the trunk edge 102 can be changed. It is easy to hold horizontally and the cutting operation can be performed smoothly. Further, since the left hand 103 holding the trunk edge side support part 44 can be held by the gripping hand holding part 46, the trunk edge side support part 44 does not move away from the left hand 103 even if the finger of the left hand 103 is spread, and the circular edge trunk edge fixture 41 is provided. Can be prevented from falling off.
(2) Next, the side surface on the other end side of the barrel edge 102 is brought into contact with the side surface 101a on the near side of the column 101, and each side surface 101a of the column 101 is positioned below the barrel edge contact portion of the column 101. The rotating plate 20 of the circular saw 1 and the side-side column abutting portion 17 are brought into contact with 101b, the circular saw 1 is slid upward along the column 101, and the barrel edge 102 is cut by the rotating saw blade 5. . Thereby, a trunk edge can be cut | disconnected to the length same as the distance between two pillars. Since the rotating plate 20 of the circular saw 1 and the side column contact portion 17 are brought into contact with the column 101 and the circular edge 1 is slid upward along the column 101, the body edge 102 can be cut. Therefore, it is possible to smoothly and safely cut the trunk edge having the same length as that between the columns without requiring skill. In addition, while the left hand 103 holds the trunk edge 102 horizontally between the two pillars 100 and 101, the circular saw 1 can be operated by the right hand 104 to cut the trunk edge 102 alone.
(3) By pressing the rotating plate 20 against the column 101 and rotating the rotating plate 20 toward the front surface side contact portion 16, the cover rotating rail portion 19 is pressed by the sliding wheel portion 23, and the cover is rotated. The lower safety cover portion 18 can be rotated backward together with the rail portion 19, and the saw blade 5 can be exposed in the space between the lower surface of the base portion 13 and the side surface 101 a of the column 101. In this way, the saw blade 5 is exposed by pressing the rotating plate 20 against the column 101, and when the rotating plate 20 is separated from the column 101, the lower safety cover portion 18 covers the saw blade 5, so that only when cutting is performed automatically. Since the saw blade 5 is exposed, it is excellent in workability and safety.
(4) Since the base portion 13 is detachably fixed to the pedestal portion 2 with a thumbscrew (base fixing means) 14, the base portion 13 can be removed from the pedestal portion 2, and the lower surface of the pedestal portion 2 is cut. It can also be used as a normal circular saw in which various members to be cut are cut by the saw blade 5 in contact with the member, and can also be used for cutting members to be cut other than the barrel edge 102.
(5) By loosening the angle adjusting screw 12, the motor part 4 fixed to the upper safety cover part 6 with the front axle part 7a and the rear axle part 7b as the center, and the saw blade 5 integral with the motor part 4 are The saw blade 5 can be adjusted to a desired cutting angle, and can be fixed at a desired angle by tightening the angle adjusting screw 12 in the cutting angle adjusting section 8. it can. By adjusting the cutting angle of the saw blade 5, the cut surface of the barrel edge 102 can be inclined at a predetermined angle, and even if the barrel edge 102 is slightly longer than the distance between the columns, It can be easily and firmly placed between the columns 100 and 101.
(6) Since the positioning means comprising the linear concave portions 24 and concave portions 31 on the lower surface of the pedestal portion 2 and the positioning convex portions 25 and convex portions (not shown) on the upper surface of the base portion 13 are provided, the saw blade insertion hole 3 The base portion 13 can be accurately positioned and fixed to the lower surface of the pedestal portion 2 so that the base side saw blade insertion hole 15 communicates.

(Embodiment 2)
FIG. 9A is a plan view of the main part of the ruler for circular saw in the second embodiment, and FIG. 9B is a side view of the main part of the ruler for circular saw in the second embodiment.
In FIG. 9, 51 is a circular saw ruler according to the second embodiment, 52 is a ruler fixing plate fixed to the upper surface of a plate-shaped member X such as a concrete panel, and 53 is one side of the ruler fixing plate 52. The formed T-shaped concave ruler slide fitting portion 54 formed on one side has a T-shaped convex body-side fitted portion 54a slidably fitted to the ruler slide fitting portion 53 on one side. A ruler main body 55 is a main body fixing portion extending from the side of the ruler slide fitting portion 53 to the upper surface side of the ruler main body 54, and 56 is a main body fixing screw that is screwed to the main body fixing portion 55 to fasten and fix the ruler main body 54. , 57 is a circular saw slide linear convex portion formed on the other side portion of the ruler body 54 and slidably fitted with the linear concave portion of the circular saw 1, and 58 is a stop formed in the ruler fixing plate 52. The attachment hole 58a is formed by attaching the ruler fixing plate 52 to the plate-like workpiece X with the attachment hole 58. A fixing member such as a light child for fixing and fixing, 59 is a hinge part fixed to the side part of the main body fixing part 55, and 60 has one end part fixed to the hinge part 59 and arranged to be rotatable in the horizontal direction. The positioning member 60 a is a positioning member fixing portion that fixes the positioning member 60 while being attached to the main body fixing portion 55. In FIG. 9B, 1 is a circular saw, 2 is a pedestal part, 4 is a motor part, 4b is a handle part, 5 is a saw blade, 6 is an upper safety cover part, and 24 is a linear recess. Are the same as those described in the first embodiment, and thus the same reference numerals are given and description thereof is omitted.

With respect to the circular saw ruler according to the second embodiment configured as described above, its usage will be described below with reference to the drawings.
As shown in FIG. 9, first, the positioning member 60 is rotated and arranged so as to be orthogonal to the length direction of the ruler main body 54, so that the tip of the positioning member 60 coincides with the planned cutting line Y to be cut. The ruler fixing plate 52 is fixed to the plate-shaped workpiece X. In order to fix the ruler fixing plate 52, as shown in FIG. 9 (b), the fixing member 58a is inserted into the fixing hole 58, and the plate-shaped member X is stuck and fixed. The length of the positioning member 60 is such that when the linear concave portion 24 of the pedestal portion 2 of the circular saw 1 is fitted to the circular saw sliding linear convex portion 57 of the ruler main body 54, the distal end portion of the positioning member 60 is provided. Is preset to a length that matches the position of the saw blade 5.
Next, the main body side fitted portion 54a of the ruler main body 54 is slidably fitted to the ruler slide fitting portion 53, and the ruler main body 54 is slid with respect to the ruler fixing plate 52 to fix the main body at a predetermined position. The screw 56 is tightened and fixed. Here, when cutting the plate-shaped member X to be cut from its end side, it is preferable to arrange and fix the ruler body 54 so that one end of the ruler main body 54 protrudes from the end side of the plate-like member to be cut X. Next, the positioning member 60 is rotated to a position along the ruler fixing plate 52 and fixed by the positioning member fixing portion 60a. Subsequently, the linear concave portion 24 formed on the side of the lower surface of the pedestal portion 2 of the circular saw 1 is fitted into the circular saw sliding linear convex portion 57 at one end of the ruler body 54. At this time, since the length of the positioning member 60 is set in advance so that the saw blade 5 and the planned cutting line Y match, the position of the saw blade 5 matches the planned cutting line Y. Further, the linear recess 24 is formed so that the lower surface of the pedestal 2 and the lower surface of the ruler body 54 are flush with each other when the linear recess 24 is fitted to the circular saw sliding linear protrusion 57. ing. Thereby, since the whole surface of the lower surface of the base part 2 contact | abuts the circular saw 1 on the upper surface of the plate-shaped to-be-cut member X, the circular saw 1 can be stabilized. In this state, the handle portion 4b of the circular saw 1 is gripped, and the circular saw 1 is slid in the cutting direction along the circular saw sliding linear convex portion 57, so that the plate-shaped member X is cut to the planned cutting line Y. Can be cut along a straight line.

Since the circular saw ruler 51 according to the second embodiment is configured as described above, it has the following operation.
(1) Since the main body side fitted portion 54a can be slidably fitted to the ruler slide fitting portion 53 and the ruler main body 54 can be slid with respect to the ruler fixing plate 52, the length of the expected cutting line Y Can be accommodated by moving the ruler body 54 in the length direction of the planned cutting line Y even if it is longer than the ruler body 54, and it is easy and accurate even in the vicinity of the center part away from the end of the plate-like member X to be cut. Can be cut. Further, the main body side fitted portion 54a is formed in a T-shaped convex shape and the ruler slide fitting portion 53 is formed in a corresponding T-shaped concave shape, so that the ruler main body 54 is detached from the ruler fixing plate 52. It is difficult and easy to handle because the ruler fixing plate 52 and the ruler body 54 are integrated even when cutting or when the positions of the ruler fixing plate 52 and the ruler body 52 are moved.
(2) Since the circular saw sliding linear convex portion 57 is formed on the side portion of the ruler main body 54, the linear concave portion 24 of the circular saw 1 is fitted to the circular saw sliding linear convex portion 57, and the round The saw 1 can be guided and slid linearly, and the plate-like member X can be accurately cut linearly.
(3) Since the plurality of fastening holes 58 are formed in the ruler fixing plate 52, the ruler fixing plate 52 can be fastened and fixed to the upper surface of the plate-like member X by the fastening member 58a. Further, a main body fixing portion 55 that extends from the side of the slide fitting portion 53 of the ruler fixing plate 52 to the upper surface side of the ruler main body 54, and a main body fixing that is screwed to the main body fixing portion 55 to fasten and fix the ruler main body 54. The ruler main body 54 can be slid with respect to the ruler fixing plate 52 and the main body fixing screw 56 can be fastened and fixed at a predetermined position. The position of the ruler main body 54 is the plate-shaped cover. Without shifting on the cutting member X, the circular saw 1 can be slid linearly along the circular saw sliding linear convex portion 57 to smoothly cut the plate-shaped member X to be cut.
(4) When fixing the ruler fixing plate 52 to the upper surface of the plate-shaped workpiece X by the fixing member 58a, the ruler fixing plate 52 is arranged so that the tip of the positioning member 60 coincides with the planned cutting line Y. By fixing, the ruler fixing plate 52 and the ruler main body 54 can be accurately positioned and fixed, and the circular saw 1 can accurately cut along the planned cutting line Y. Further, when cutting with the circular saw 1, the positioning member 60 is rotated to a position along the ruler fixing plate 52 and fixed by the positioning member fixing portion 60a, so that the cutting work is not obstructed and the workability is excellent.

As described above, the present invention relates to a circular saw that cuts a member to be cut by rotating a circular saw blade with a motor. In particular, according to the present invention, the length of the trunk edge is set to the length between two columns. The cutting work can be easily performed to match the height, and it can be cut accurately at the cutting position, and the cutting surface can be given a desired inclination, and can be slid along the circular saw ruler without deviation. It is possible to provide a circular saw capable of easily cutting a plate-shaped member to be cut linearly.
As described above, the present invention relates to a circular saw body edge fixture used together with a circular saw to cut a member to be cut such as a body edge with a circular saw. To provide a circular saw barrel edge fixture that can be securely held between pillars of a book and that can smoothly and easily perform the operation of cutting a barrel edge with a circular saw in accordance with the length between columns. Can do.
As described above, the present invention relates to a circular saw ruler for cutting a plate-like member to be cut such as a concrete panel with a circular saw. In particular, according to the present invention, the circular saw is stably and accurately guided. A circular saw ruler that can cut a plate-like member to be cut in a straight line and can easily and accurately cut near the center of the plate-like member to be cut. can do.

Left side view of main part of circular saw in embodiment 1 Right side view of main part of circular saw in embodiment 1 The principal part top view of the circular saw in Embodiment 1 The principal part front view of the circular saw in Embodiment 1 Principal plan view showing the bottom of the pedestal (A) Front view of a main part of a circular saw barrel edge fixture used for cutting a barrel edge with a circular saw (b) Usage state diagram of a circular saw barrel edge fixture Side view of main part showing cutting operation of trunk edge (A) Main part plan view showing cutting operation of trunk edge (b) Cutting action of trunk edge when the cutting angle of the saw blade is inclined (A) The principal part top view of the ruler for circular saws in Embodiment 2 (b) The principal part side view of the ruler for circular saws in Embodiment 2 (A) Main part front view showing a conventional method for cutting a trunk edge (b) Main part plan view showing a conventional method for cutting a trunk edge

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Circular saw 2 Base part 3 Saw blade insertion hole 4 Motor part 4a Drive shaft 4b Handle part 4c Switch 5 Saw blade 6 Upper safety cover part 7a Front shaft mounting part 7b Rear shaft mounting part 8 Cutting angle adjustment part 9 Movable part 9a Scale plate 10 Angle adjustment plate 10a End 11 Slide hole 12 Angle fixing screw 13 Base 14 Wing screw (base fixing means)
DESCRIPTION OF SYMBOLS 15 Base side saw blade insertion hole 16 Front side column contact part 17 Side surface side column contact part 18 Lower safety cover part 19 Cover rotation rail part 20 Rotation plate 21 Rotation board attachment part 22 Elastic member 23 Sliding vehicle part 24 linear concave portion 25 positioning convex portion 31 concave portion 32 pedestal side screw hole 41 circular saw barrel edge fixture 42 column fixing portion 42a needle portion 43 column side support portion 44 trunk edge side support portion 45 connection plate 46 grip hand holding portion 47 Surface fastener 51 Circular saw ruler 52 Ruler fixing plate 53 Ruler slide fitting part 54 Ruler main body 54a Main body side fitted part 55 Main body fixing part 56 Main body fixing screw 57 Circular saw sliding linear convex part 58 Fastening hole 58a Fastening member 59 Hinge part 60 Positioning member 60a Positioning member fixing part 100, 101 Column 101a, 101b Side surface 102 Trunk edge 102a One end part 103 Left hand 104 Right hand 105 Hand-saw X Plate-like material to be cut Y Planned cutting line

Claims (10)

A flat pedestal,
A saw blade insertion hole formed in the pedestal,
An upper safety cover portion pivotally attached to the pedestal portion at the front and rear portions of the saw blade insertion hole;
A motor portion disposed and fixed on a side portion of the upper safety cover portion;
A circular saw blade fixed to the drive shaft of the motor unit, the upper side being disposed inside the upper safety cover unit, and the lower side being inserted into the saw blade insertion hole;
A handle portion formed at the top of the motor portion;
A circular saw with
A flat base portion detachably fixed to the lower surface of the pedestal portion by a base fixing means;
A base-side saw blade insertion hole formed in the base portion so as to communicate with the saw blade insertion hole;
A front-side column contact portion fixed to a side portion of the base-side saw blade insertion hole on the lower surface of the base portion;
A side-side column abutting portion fixed perpendicularly to the front-side column abutting portion at the rear of the base side saw blade insertion hole;
A circular saw characterized by comprising: A cutting angle adjusting section for changing a cutting angle of the saw blade and fixing the cutting angle at a predetermined angle;
The cutting angle adjusting unit is
A movable part fixed to the front end of the upper safety cover part;
An angle adjustment plate standing on the front end of the pedestal and disposed on the front of the movable part;
An arc-shaped slide hole formed in the angle adjusting plate;
An angle fixing screw that is slidably inserted into the slide hole portion and is screwed to the movable portion to clamp and fix the angle adjusting plate and the movable portion;
The circular saw according to claim 1, comprising:   The circular saw according to claim 1 or 2, wherein the thickness of the front-side column abutting portion is larger than the thickness of a member to be cut such as a trunk edge. A lower safety cover portion, which is provided at the lower portion of the saw blade and is rotatably disposed around the saw blade;
A cover rotating rail portion protruding from a side portion of the lower safety cover portion on the front column contact portion side;
A rotating plate disposed along the lower surface of the front side column abutting portion and fixed rotatably at a rear end portion of the front side column abutting portion;
An elastic member inserted between the rotating plate and the front side column contact portion;
A sliding wheel portion disposed at a distal end portion of the rotating plate and pressing the cover rotating rail portion by rotating the rotating plate to rotate the lower safety cover portion;
The circular saw according to any one of claims 1 to 3, further comprising: Positioning means for positioning the base portion relative to the pedestal portion;
The positioning means comprises:
A linear recess parallel to the saw blade formed on the lower surface of the pedestal,
A positioning protrusion formed on the upper surface of the base portion and fitted in the linear recess;
The circular saw according to any one of claims 1 to 4, wherein the circular saw is provided. A circular saw body edge fixture for cutting a body edge erected between two pillars by a length between the two pillars,
A column fixing portion that is detachably fixed to a side portion of one of the columns;
A rod-shaped column-side support portion having one end fixed to the column fixing portion;
A trunk edge side support portion connected at a predetermined angle to the other end portion of the column side support portion via a connection plate;
A circular saw barrel edge fixture characterized by comprising:   7. A circular saw barrel edge fixture according to claim 6, further comprising a grip hand holding portion disposed on an upper portion of the trunk edge side support portion. A ruler for a circular saw for cutting a plate-like member to be cut such as a concrete panel in a straight line, a ruler fixing plate fixed to the upper surface of the plate-like member to be cut, and one side portion of the ruler fixing plate A ruler slide fitting portion formed on the ruler slide fitting portion, and a ruler body slidably disposed along the ruler slide fitting portion.
A body-side fitted portion that is formed on one side of the ruler body and is slidably fitted to the ruler slide fitting portion;
A circular saw sliding linear convex portion that is formed on the other side portion of the ruler body and in which the linear concave portion of the circular saw according to claim 5 is slidably fitted,
A circular saw ruler characterized by comprising:   The ruler for a circular saw according to claim 8, further comprising a positioning member having one end portion fixed to a side of the ruler main body side of the ruler fixing plate so as to be rotatable in a horizontal direction by a hinge portion. . 2 or more fixing holes drilled in the ruler fixing plate for fixing the ruler fixing plate to the plate-like member to be cut with a fixing member such as a light child. Item 10. A circular saw ruler according to item 8 or 9.

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