JP3339922B2 - Measurement scale tension setting tool - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scale tape tension setting device generally called a tape measure.

[0002]

2. Description of the Related Art When measuring the positional accuracy of a black ink on a concrete foundation of a house, the length between two parallel black ink marks,
Alternatively, it is necessary to measure the length between the diagonal lines of each ink. As such a measuring method, as shown in FIG. 6, the tip of the scale tape (51) is hung on a jig (53) attached to an anchor bolt or the like of a foundation (52), and in this state, the scale tape (51) is fixed. 51) Pulling the scale and reading the scale is performed.

[0003]

As described above, when measuring the length with a scale tape, the length varies depending on the degree of tension of the tape, and particularly when the measurement interval is long, the deviation becomes large, and the error becomes large. There is a problem that it easily occurs. For this reason, in the foundation of a house, it is difficult to attach a frame or the like to be attached on the foundation, or there is an inconvenience that the attachment itself is forcibly caused to cause a disorder in the building itself. In general, this type of tape-type scale is shown to have a tension of 10 kg at the time of measurement, and accurate measurements can be obtained by measuring under the tension as it is . However, in the related art, there is no method for accurately setting the tension, and since the measurer measures the tension by intuition, an accurate measured value is not always obtained, and the measured value varies from person to person. There was a problem.

An object of the present invention is to solve the conventional drawbacks and to accurately set the tension of the scale, thereby improving the accuracy of dimension measurement by the scale. It is a thing.

[0005]

In order to solve the above-mentioned problems, according to the present invention, there is provided a slide table which is slidable in a direction in which a scale tape is stretched and which is attached to a setting tool body.
A fixing mechanism for fixing an intermediate portion of the scale tape to the slide table, a spring mechanism provided between the slide table and the setting tool main body to resist a force in a direction in which the scale tape is stretched, And an index for indicating the tension applied to the scale tape in accordance with the amount of sliding of the slide table that moves.

In the above, it is conceivable that the setting tool main body is provided integrally with a winding case for winding the scale tape. On the other hand, the fixing mechanism includes an eccentric roller attached to a slide table and the eccentric roller. A structure is conceivable which comprises a rotating operation tool, and the scale tape is pressed and held on the outer peripheral surface of the eccentric roller by the operation of the operation tool.

[0007] The setting tool of the present invention can be applied not only to basic measurement as in the embodiment but also to various kinds of measurement.

[0008]

[Function] When the tip of the scale tape is hung on the starting point side in the measurement direction, the middle part of the scale tape is fixed to the slide table at the measurement point side, and the setting tool body is pulled in the tape pulling direction in this state. The slide table slides with respect to the setting tool body while compressing the spring. If an index indicating the tension required for the scale tape is provided according to the slide amount of the slide table, the tension can be set to an accurate tension only by adjusting the slide table to the index.

[0009]

FIG. 1 shows a winding case (1) for winding a scale tape (2).
The tension setting device (4) of the present invention is attached to the distal end in the pull-out direction of the tape (2), which is opposite to the grip (3) for holding. In FIG. 2, (5)
It is a setting tool main body with a roughly U-shaped cross section with an open top surface,
Lid plates (6) and (7) are respectively attached to the left and right open ends of the setting tool body (5), and bolts (7) inserted into the lid plate (7) from the leading end side in the pull-out direction of the tape (2). 8) The tip of (9) is screwed into the other cover plate (6) and fixed. A mounting plate (10) is integrally protruded from the cover plate (6) on the winding case (1) side, and is fixed to the case (1) by screws (11) at the mounting plate (10). ing.

[0010] (12) is a slide table mounted so as to be slidable in the pull-out direction of the tape (2) so as to cover the opening of the upper surface of the setting tool main body (5). )), A spring receiving block (13) integrally provided on the back surface is housed in the setting tool body (5), and an upper bolt (8) for fixing the cover plates (7) and (6) is provided. It penetrates through the spring receiving block (13) and serves as a slide guide for the slide base (12). Furthermore,
This spring receiving block (13) and the cover plate (7) on the tip side
The load spring (14) is interposed between the bolt (8) and the load spring (14).

An L-shaped bearing stand (18) as viewed from the side is fixed to the upper surface of the slide stand (12), and the bearing stand (18) has an axis perpendicular to the tape pull-out direction. According to (19), the roller (20) is rotatably supported at a position eccentric from the center of the roller (20).
An operation lever (21) for rotating the roller (20) is protruded from one position on the outer periphery of the eccentric roller (20). (22) is a holding member bent in a U-shape when viewed from the side of the tape (2) in the pull-out direction.
As shown by, the elongated hole (23) formed in the vertical portion is provided between the eccentric roller (20) and the bearing base (18) by the shaft (1).
It is externally fitted to 9) and mounted so that it can move up and down. On the other hand, the horizontal holding piece (24) at the lower end is the eccentric roller (20)
And between the bearing board (18) and the upper surface of the horizontal board (26),
The upper horizontal piece (25) at the upper end is located above the eccentric roller (20).

The scale tape (2) drawn from the winding case (1) passes between the lower holding piece (24) and the substrate (26) of the bearing stand (18). At this time, since the shaft (19) of the eccentric roller (20) is eccentric from the center, as shown in FIG.
When 1) is tilted to the right side of the figure, the short part from the center of the shaft (19) to the outer peripheral surface of the eccentric roller (20) comes down, and the lower holding piece (24) There is a gap to facilitate withdrawal of the tape (2). On the other hand, when the operation lever (21) is tilted to the left as shown in FIG. 4, the long part of the eccentric roller (20) up to the outer periphery moves downward,
The tape (2) can be fixed by pressing the tape (2) downward through the lower holding piece (24). When the operating lever (21) is returned to the right side as shown in FIG. 3, the outer peripheral surface of the eccentric roller (20) having a long length up to the shaft center comes upward. The piece (25) is pushed upward to enlarge the gap below the lower holding piece (24).

As shown in FIGS. 1 and 5, a pointer (27) for indicating the amount of sliding of the slide table (12) is attached to the setting tool body (5). An index scale (28) indicating the amount of movement is displayed on the upper surface of the slide base (12) in correspondence with this,
When the slide table (12) slides, the tensile load acting on the tape (2), that is, the tension can be read.

In the above configuration, the leading end of the scale tape (2) is hung on the starting point side between the measuring sections,
In this state, pull out the tape (2), and on the measurement point side, tilt the lever (21) to the left as shown in FIG. 4 and fix the intermediate portion of the tape (2) to the slide base (12). I do. In this state, by holding the grip (3) portion of the winding case (1) and pulling the setting tool body (5) toward the winding case (1), the load spring (14) is compressed. Meanwhile, the slide table (12) relatively slides in the opposite direction. At the time of this sliding operation, while reading the index mark (28) indicated by the pointer (27), the user pulls the load to a predetermined load position, that is, a position where the tension is obtained. 2)
By reading the scale at the measurement point, it is possible to accurately measure the length from the starting point to the measurement point.

Since the tape (2) is pressed and fixed over the entire surface of the horizontal pressing piece (24) as described above, the tape (2) slips due to the load of the spring (14). There is no fear of moving. Also,
If necessary, since the operation lever (21) is tilted toward the winding case (10), the tape (2) can be more securely held by further pressing the lever (21) downward.

[0016]

As described above, according to the present invention, by fixing the scale tape by the fixing mechanism and pulling the setting tool as a whole, the tension generated on the tape can be easily measured. This makes it possible to perform accurate measurement, and there is an effect that there is no individual difference and an accurate tension can be set by anyone, as compared with the conventional measurement of tension by intuition.

According to the invention of claim 2 of the present application, since the setting tool is attached to the tip of the winding case for winding the tape, these can always be transported integrally, and can be easily carried. Operation is easy. In particular, pulling by holding the grip or the like of the large take-up case portion has an effect that the tape can be pulled easily with a smaller force than pulling the tape or holding the setting tool body portion.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a setting tool according to the present invention is attached to a leading end of a tape winding case.

FIG. 2 is a vertical sectional front view of the setting tool of the present invention.

FIG. 3 is an enlarged side view of a tape fixing portion.

FIG. 4 is an enlarged side view of a tape fixing portion in a state where the tape is fixed.

FIG. 5 is a plan view of the setting tool.

FIG. 6 is a perspective view showing a conventional foundation measuring method.

[Explanation of symbols]

 (1) Tape winding case (2) Scale tape (4) Setting tool (5) Setting tool body (12) Slide table (14) Load spring (20) Eccentric roller (21) Operation lever

Claims (3)

(57) [Claims] 1. A slide table attached to a setting tool main body so as to be slidable in a stretching direction of a scale tape, a fixing mechanism for fixing an intermediate portion of the scale tape to the slide table, the slide table and the setting tool main body A spring mechanism that is provided between the spring tape and a force that resists the force in the tension direction of the scale tape, and an index that indicates the tension applied to the slide tape in accordance with the sliding amount of the slide table that moves against the spring mechanism. A tension setting device for a measuring scale, comprising: 2. The tension setting tool for a measuring scale according to claim 1, wherein the setting tool main body is provided integrally with a winding case for winding the scale tape. 3. The fixing mechanism comprises an eccentric roller attached to a slide table and an operating tool for rotating the eccentric roller, and the scale tape is pressed and held on the outer peripheral surface of the eccentric roller by operating the operating tool. The tension setting device for a measuring scale according to claim 1 or 2, wherein: