JP3434798B2 - Cutting angle detector - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portion of a peripheral edge attached to a corner where a wall and a ceiling of a building intersect each other, which is joined at an entering corner or an exiting corner (normally 9
The present invention relates to a cutting angle detector used for accurately cutting to 1/2 of (about 0 °).

[Prior art]

At the corner where the wall and the ceiling of the building intersect, many elongated edges such as aluminum, plastic or wood are attached for the purpose of concealing the distortion of the intersection and making it look like a straight line. ing.

The portion located at the entrance corner or the exit corner of the peripheral edge is cut at an angle of 1/2 of the angle of the entrance corner or the exit corner (usually around 90 °), and the cut surfaces are united and joined. is doing. This entry corner or exit corner should normally be 90 °, but it is always 9 ° due to dimensional errors such as walls and ceilings.
It is not always 0 °, and some errors occur.

In view of these points, conventionally, an angle measuring tool has been used which is constructed by pivotally supporting a ruler piece 9 and a protractor 7 as shown in FIG. This angle measuring tool measures the accurate angle of the projecting corner O by applying the ruler piece 9 and the bottom of the protractor 7 to the projecting corner O of the building. After measuring the accurate angle, 1/2 of the measured angle is indexed by calculation, and the 1/2 angle is cut on the peripheral edge E.

[0005]

However, this conventional angle measuring instrument has a problem in that it can measure only the angle of the projecting corner O and cannot be used for the entering corner I because of its shape. Further, after the accurate angle of the projected corner is measured, a half of the angle is calculated, and the angle E has to be cut on the peripheral edge E, which is a troublesome work.

[0006] Therefore, an object of the present invention is to provide a cutting angle detector which can measure not only the angle of the projected corner but also the angle of the entered corner and can eliminate the troublesome work after the measurement. To do.

[0007]

In order to achieve the above object, a cutting angle detector according to claim 1 of the present invention comprises a central shaft piece (1) having a guide slot (1c) along its center. )
On the upper end fulcrum part (1a), the tip ends of the left gauge piece (2a) and the right gauge piece (2b) are rotatably supported at an angle of about 90 ° about the central shaft piece (1). To form an entrance corner gauge (2) for measuring an accurate angle of the entrance corner (I), and to measure the left measurement piece (3a) and the right measurement piece at the lower end fulcrum portion (1b) of the central shaft piece (1). The tip portion of the piece (3b) is rotatably supported at an angle of about 90 ° to form a projection corner gauge (3) for measuring an accurate angle of the projection corner (O), and the left gauge piece (2
a) and the left measuring piece (3a) are parallel to each other, the left gauge piece (2a) and the left measuring piece (3a) are connected at their rear end portions by the left connecting piece (4a), and at the same time, the right gauge piece (2b). And the right measuring piece (3b) are parallel to each other, and the rear end portions of the right gauge piece (2b) and the right measuring piece (3b) are connected by the right connecting piece (4b) to guide the central shaft piece (1). The rear ends of the left guide piece (5a) and the right guide piece (5b) are rotatably supported by the guide pin (5c) inserted through the long hole (1c), and the left guide piece (5c) is rotated.
The tip part of a) is rotatably supported at a predetermined position which is a constant distance from the upper end fulcrum part (1a) of the central shaft piece (1) of the left gauge piece (2a), and the right guide piece (5b). Rotatably pivot the tip of the right gauge piece (2b) to a predetermined location that is a constant distance from the upper end fulcrum (1a), and guide it parallel to the longitudinal centerline of the central shaft piece (1). Board (6)
Is provided.

Further, in the cutting angle detector according to a second aspect of the invention, the guide corner plate (6) is projected forward from the tip of the entry corner gauge (2) to the exit corner gauge (3). It is characterized in that it is provided so as to be slidable from the front end portion to a position protruding rearward.

Further, in the cutting angle detector according to the present invention, a protractor (7) for displaying an accurate angle of the entering corner (I) or the exiting corner (O) is attached to the exit corner gauge (3). It is characterized by

Symbols in parentheses indicate corresponding elements or matters described in the drawings and the embodiments of the invention described later.

According to the first aspect of the present invention,
Since the entry corner gauge that can measure the angle of the entry corner is provided together with the entry corner gauge that measures the angle of the entry corner, both the angles of the entry corner and the entry corner can be measured. That is,
To measure the angle of the projected corner, one of the two sides forming the projected corner is brought into contact with the left measurement piece or the right measurement piece, and the other side is brought into contact with the right measurement side or the left measurement side. Thus, the angle formed by the left measurement piece and the right measurement piece is the accurate angle of the projected corner. To measure the angle of the inside corner, contact the left gauge piece or the right gauge piece on one side that forms the inside corner, and contact the right gauge piece or the left gauge piece on the other side. The angle formed by the gauge piece and the right gauge piece is the exact angle of the entry corner.

According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, since the guide plate is slidably provided, the angle of the projecting corner or the entering corner is measured. Subsequent work becomes easy.

That is, for example, after measuring the angle of the entering corner, the guide plate is slid forward, the front side surface of the left gauge piece of the entering corner gauge is brought into contact with the peripheral edge, and the upper surface of the peripheral edge is guided along the guide plate. Insert a scribe and cut with a circular saw along the scribe. Alternatively, the blade of a circular saw may be arranged along the guide plate without cutting, and the peripheral edge may be cut as it is. In either case, the guide plate is provided in parallel with the central shaft piece located at the center of the left gauge piece and the right gauge piece, so that the peripheral edge is 1/100 of the measurement angle.
Can be accurately cut into two angles.

Further, according to the invention of claim 3,
In addition to the action and effect of the invention described in claim 1 or 2, since the protractor for displaying the accurate angle of the entering corner or the exiting corner is attached to the exit corner gauge, it is possible to visually grasp the accurate angle. It is convenient and convenient. The angles of the entry corner and the exit corner do not usually deviate significantly from 90 °. Therefore, for example, when the measurement angle is largely deviated from 90 ° due to an operation error of the cutting angle detector, it is possible to know that there is an operation error by reading the scale of the protractor.

Since the entrance corner gauge and the exit corner gauge are interlocked in parallel by the central shaft piece and the connecting member, even when the entrance corner angle is measured by the entrance corner gauge, the entrance corner gauge and the exit corner gauge are attached to the exit corner gauge. The protractor can read the measured angle at the corner.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A cutting angle detector according to an embodiment of the present invention will be described with reference to FIGS. 1 is a plan view showing a cutting angle detector, FIG. 2 is a rear view thereof, FIG. 3 is a front view thereof, and FIG. 4 is a side view thereof. The same parts as those shown in the conventional example are designated by the same reference numerals.

The cutting angle detector according to the embodiment of the present invention has the following configuration. First, at the upper end fulcrum portion 1a of the central shaft piece 1 having the elongated guide hole 1c along the center,
An entering corner gauge that measures the accurate angle of the entering corner I by pivotally supporting the tip portions of the left gauge piece 2a and the right gauge piece 2b around the center shaft piece 1 at an angle of approximately 90 °. Forming 2. Along with that, the lower end fulcrum portion 1b of the central shaft piece 1
Further, the tip ends of the left measuring piece 3a and the right measuring piece 3b are rotatably supported at an angle of about 90 ° to form a projected corner gauge 3 for measuring an accurate angle of the projected corner O.

The left gauge piece 2a and the left measuring piece 3a are parallel to each other, and the rear end portions of the left gauge piece 2a and the left measuring piece 3a are connected by a left connecting piece 4a, and at the same time, the right gauge piece 2b is connected. The right measurement piece 3b is parallel and the right gauge piece 2b
And the rear end portions of the right measurement piece 3b are connected to each other by the right connection piece 4b. The left connecting piece 4a and the right connecting piece 4b connect the connecting member 4 to each other.
To form.

Then, the left guide piece 5a and the right guide piece 5b are inserted into the guide pins 5c inserted through the elongated guide holes 1c of the central shaft piece 1.
The rear end portion of the left guide piece 5a is rotatably supported, the tip end portion of the left guide piece 5a is rotatably supported at a predetermined position of the left gauge piece 2a, and the tip end portion of the right guide piece 5b is attached to the right gauge piece 2b. The guide member 5 is rotatably supported on a predetermined position of the guide member 5. The left gauge piece 2a and the right gauge piece 2b are
They are located at the same distance from the upper end fulcrum 1a of the central shaft piece 1.

Further, in the cutting angle detector according to the present embodiment, the guide plate 6 is provided parallel to the longitudinal center line of the central shaft piece 1. The guide plate 6 protrudes forward (upward in FIG. 1) from the tip of the entry corner gauge 2,
It is slidably provided from the tip of the projected corner gauge 3 to a position projecting rearward (downward in FIG. 1). More specifically, the central member 8 is provided so as to face the central shaft piece 1, and two guide pins 8a are erected from the central member 8 with a space therebetween, and the guide pin 8a has an L-shaped cross section. The guide plate 6 is inserted into a guide long hole 6a formed in the bottom wall of the guide plate 6.

Further, in this cutting angle detector,
A protractor 7 is attached to the projected corner gauge 3 to display an accurate angle of the projected corner I or projected corner O. The method of mounting the protractor 7 is not limited, but here, the left measuring piece 3a and the right measuring piece 3 are used.
To each of b, the bottom of each protractor 7 should be parallel and attached at the center (90 ° scale) so that the measurement angle can be known from the scale of the other protractor 7 where the bottom of one protractor 7 is located. You can

This cutting angle detector is used as follows. A case will be described in which the angle of the entering corner I is measured and the peripheral edge E is cut according to the angle. First, the left gauge piece 2a of the entry corner gauge 2 is brought into contact with one wall forming the entry corner I, and the right gauge piece 2b is brought into contact with the other wall (see FIG. 5). At this time, the entry corner gauge 2 is expanded and contracted according to the angle of the entry corner I, and the angle obtained by this is the entry corner I.
Is the exact angle.

Next, while maintaining the measurement angle of the entry corner gauge 2, the guide plate 6 is slid forward, and then the rear surface of the peripheral edge E is brought into contact with the front surface of the left gauge piece 2a. In this state, the guide plate 6 is located directly above the peripheral edge E. Then, a circular saw blade B is brought into parallel contact with the guide plate 6, and the peripheral edge E is cut by lowering while rotating the blade B (see FIG. 6). Since the guide plate 6 is at a half angle of the accurate angle of the entering corner I due to the function of the guide member 5, the peripheral edge E can be accurately cut to the half angle.

Similarly, the front surface of the right gauge piece 2b is cut with a circular saw while the rear surface of the other peripheral edge E to be united with the previous peripheral edge E is in contact. The peripheral edge E is also accurately cut at an angle half the angle of the entering corner I. This allows
The two edging edges E can be joined together in the entry corner I without a gap.

In this method of use, the blade B of a circular saw is directly brought into contact with the guide plate 6 to cut it.
Alternatively, the peripheral edge E may be scribed along the guide plate 6 and cut along the scribe.

When cutting the peripheral edge E attached to the projecting corner O, the left measuring piece 3a and the right measuring piece 3b of the projecting corner gauge 3 are cut.
The same can be done by bringing the peripheral edge E into contact with (see FIG. 7).

According to this cutting angle detector, not only the projection corner gauge 3 which measures the angle of the projection corner O but also the projection corner gauge 2 which can measure the angle of the projection corner I are provided. It is possible to measure both the angle of O and the corner I, and
Since the guide plate 6 projecting forward from the tip of the entry corner gauge 2 or projecting backward from the tip of the exit corner gauge 3 is provided slidably in parallel with the longitudinal center line of the central shaft piece 1, After measuring the angle of the corner O or the entering corner I, the peripheral edge E can be easily cut by a simple operation.

[0028]

As described above, according to the invention described in claim 1 of the present invention, the entrance corner gauge for measuring the angle of the exit corner and the entrance corner gauge for measuring the angle of the entrance corner are provided. Therefore, it is possible to measure both the angle of the projected corner and the angle of the entered corner. As a result, workability can be improved and no special skill is required.

According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, since the guide plate is slidably provided, the angle of the projecting corner or the entering corner is measured. After that, it is possible to perform marking along the guide plate or directly cut with a circular saw. Thereby, the workability can be greatly improved.

Further, according to the invention described in claim 3,
In addition to the action and effect of the invention described in claim 1 or 2, since the protractor for displaying the accurate angle of the entering corner or the exiting corner is attached to the exit corner gauge, it is possible to visually grasp the accurate angle. It is possible to know the operation mistake before cutting. This can also improve work efficiency.

[Brief description of drawings]

FIG. 1 is a plan view showing a cutting angle detector according to an embodiment of the present invention.

FIG. 2 is a rear view of the cutting angle detector shown in FIG.

3 is a front view of the cutting angle detector shown in FIG. 1. FIG.

FIG. 4 is a side view of the cutting angle detector shown in FIG.

5 is a plan view showing a state in which the angle of the entering corner is being measured by the cutting angle detector shown in FIG. 1. FIG.

FIG. 6 is a plan view showing a state where the cutting angle detector shown in FIG. 1 assists in cutting a peripheral edge.

7 is a plan view showing a state in which the angle of the projected corner is being measured by the cutting angle detector shown in FIG.

FIG. 8 is a plan view showing an angle measuring tool according to a conventional example.

[Explanation of symbols]

1 central shaft piece 1a Upper fulcrum part 1b Lower fulcrum 1c guide long hole 2 corner gauge 2a Left gauge piece 2b Right gauge piece 3 Outer corner gauge 3a Left measuring piece 3b Right measuring piece 4 connecting members 4a Left connecting piece 4b Right connecting piece 5 Guide member 5a Left guide piece 5b Right guide piece 5c guide pin 6 guide plate 6a Guide slot 7 protractor 8 core members 8a Guide pin 9 Ruler pieces E margin I entrance corner O out corner B circular saw blade

Claims (3)

(57) [Claims] 1. A tip end portion of a left gauge piece and a tip end portion of a right gauge piece are rotated at an angle of about 90 ° around an upper end fulcrum of a central shaft piece having a guide elongated hole along the center. It freely pivots to form an in-corner gauge for measuring an accurate angle of an in-corner, and at the lower end fulcrum part of the central shaft piece, the tips of the left and right measuring pieces form an angle of about 90 °. Is formed so as to be rotatably pivoted by means of an outer corner gauge for measuring the accurate angle of the outer corner, and the left gauge piece and the left measurement piece are arranged parallel to each other, and the rear end portions of the left gauge piece and the left measurement piece are connected to each other. With the left connecting piece, the right gauge piece and the right measuring piece are parallel, the right gauge piece and the right measuring piece are connected by the right connecting piece, and the guide elongated hole of the central shaft piece is connected. The guide pins inserted through the left guide piece and the right guide piece are rotatably supported at their rear ends, and the tip end of the left guide piece is attached to the center of the left gauge piece. The upper end fulcrum of the piece is rotatably supported at a predetermined position at a fixed distance, and the tip end of the right guide piece is rotatably supported at a predetermined position at a predetermined distance from the upper end fulcrum of the right gauge piece. A cutting angle detector characterized in that a guide plate is provided so as to be parallel to a longitudinal centerline of the central shaft piece. 2. The guide plate is slidably provided from a position projecting forward from the tip of the entry corner gauge to a position projecting rearward from the tip of the exit corner gauge. The cutting angle detector according to Item 1. 3. The cutting angle detector according to claim 1, wherein a protractor for displaying an accurate angle of the entering corner or the exiting corner is attached to the exit corner gauge.