JP3163171U - Tape measure measuring tape - Google Patents

Abstract

An object of the present invention is to provide a measuring tape having a tape measure capable of reducing the bending inward of the measuring tape that occurs in the measuring tape in the upright stretched state in the air and stably performing the measurement in the upright stretched state in the air. SOLUTION: On both sides in a width direction in which a measuring tape 1 of a tape measure is bent, a reverse bending portion 3 that is bent in a direction opposite to a bending direction of a main body bending portion 2 of the measuring tape 1 is formed. Both side portions of the measuring tape 1 are reinforced to almost the same strength as the main body curved portion 2 of the measuring tape 1 over the entire length in the longitudinal direction, and the resistance against bending of both side portions of the measuring tape 1 is increased. [Selection] Figure 1

Description

  The present invention relates to a measuring tape having a tape measure that is curved in the width direction, and more particularly to a measuring tape having a tape measure that can reduce bending inwardly occurring in the measuring tape in an upright stretched state in the air.

  Conventionally, as shown in FIG. 8, when measuring tape 12 is pulled out of a case (not shown), measuring tape 12 is bent in the width direction (curved portion 13), and measuring tape 12 is in the air. Thus, the measuring tape 12 does not hang down to a certain length when it is stretched.

  As a result, for example, when the measured tape is pulled upright, the measurement tape between the measurement point at a low position such as the floor and the measurement point at a high position such as the ceiling can be measured up to a certain length in the air. Since it can expand | extend, it can measure easily.

  In addition, there has also been proposed a method in which the measuring tape is curved into a sinusoidal shape of one cycle with peaks and valleys in the cross section in the width direction to improve the air stretch (upright) property (see, for example, Patent Document 1).

  However, when the measuring tape described above is stretched in the air in the vertical direction, the measuring tape may be bent to the inside of the measuring tape due to its own weight or the weight of the locking piece provided at the tip of the measuring tape. there were.

Further, the bending of the measuring tape described above becomes easier as the measuring tape is extended in the vertical direction, and the measuring tape is bent, and the measurement cannot be continued.
The bending was not eliminated even when the cross section in the width direction of the measuring tape was bent into a sinusoidal shape with one cycle as described above.

Japanese Utility Model Publication No. 56-65402 (first page, FIGS. 1-2)

  The present invention reduces the bending inward bending generated in the measuring tape in the aerial upright stretched state, and can provide a measuring tape having a tape measure that can stably perform the measurement in the aerial upright stretched state.

  In order to solve the above-described problems, the measuring tape of the tape measure according to the present invention is a measuring tape of a tape measure that is curved in the width direction in a normal state, and is measured on both sides of the measuring tape in the width direction. It is assumed that a reverse bending portion that is bent in the opposite direction to the bending direction of the tape body is formed.

  Further, when the measuring tape is brought into contact with the measured object on the outer side portion of the reverse curved part so that the curved surface of the measuring tape body protrudes downward, the measuring tape approaches the measured object. The extending portion extending in the direction is formed.

  Furthermore, it is assumed that a linear portion is provided at the central portion of at least one of the curved portion of the measuring tape body or the reverse curved portions on both sides.

  In addition, a linear portion is provided between the curved portion of the measuring tape main body and the opposite curved portions on both sides.

  Further, the measuring tape is composed of a metal material, a resin material, or a textile material.

  The woven fabric is composed of aramid fibers or woven aramid fibers and glass fibers.

  According to the measuring tape of the tape measure of the present invention, on both sides of the measuring tape in the width direction, the measuring tape is bent in the opposite direction to the bending direction of the measuring tape body, and the reverse bending portion is formed substantially the same as the bending portion of the measuring tape body. Therefore, both sides of the measuring tape are reinforced to the same strength as the curved part of the measuring tape body over the entire length in the longitudinal direction by the reverse curved part, and the resistance against the bending of the both side parts becomes large. Even when extended upright in the air, bending is unlikely to occur and stable measurement can be performed.

  Further, in the case where the extending portion is formed on the side portion of the reverse curved portion of the measuring tape, the extending portion is close to the upper surface of the object to be measured in a state where the measuring tape is in contact with the object to be measured. The measurement scale attached to the side of the measurement tape approaches the object to be measured, and the reading error of the dimension of the measurement object with respect to the measurement point can be reduced.

  And, as described above, after measuring the dimensions of the measuring tape on the object to be measured with the curved surface of the measuring tape body facing up, if you continue to draw a line on the upper surface of the object to be measured, Since the side portion of the measuring tape is reinforced by the formation of the reverse curved portion, the end portion of the measuring tape is deformed even if the drawing tool such as a pencil is brought into strong contact with the widthwise end portion of the measuring tape. In addition, since the end in the same width direction is close to the member to be drawn, drawing can be facilitated, and therefore the measuring tape can be used as a drawing ruler.

Hereinafter, the measuring tape of the tape measure of this invention is demonstrated based on an accompanying drawing.
As shown in FIG. 1, the measuring tape 1 includes reverse curved portions 3 on both sides of the main body curved portion 2, that is, both sides in the width direction of the measuring tape 1, and the main curved portion 2 and the reverse curved portion 3 are curved with respect to each other. The direction is configured to be opposite.

  And the curvature of the width direction in the main body curved part 2 of the measuring tape 1 and the reverse curved part 3 of both sides is made into the substantially same curvature.

  The measuring tape is composed of a metal material, a resin material, or a fiber material fabric. When the measurement tape is composed of a fiber material fabric, it is composed of aramid fiber or a material woven from aramid fiber and glass fiber. However, it is suitable for the purpose of improving measurement accuracy such as toughness and reduction of stretching error.

  In addition, the woven fabric may be formed from fibers such as nylon and epoxy in addition to the aramid fibers described above and those obtained by weaving the aramid fibers and glass fibers.

  Further, in the embodiment shown in FIG. 1, the widths of the reverse curved portions 3 formed on both sides of the main body curved portion 2 in the measuring tape 1 are substantially the same width as the main body curved portion 2. May be made slightly smaller than the width of the main body bending portion 2.

  Furthermore, also in the curvature in the width direction of the main body bending portion 2 and the opposite bending portions 3 on both sides, when the width of the measuring tape 1 is formed wide, the curvature of the reverse bending portion 3 is slightly smaller than the curvature of the main body bending portion 2. In some cases, the curvature may be smaller.

  Furthermore, as shown in FIG. 4, the extending portion 9 is formed on the outer side portion of the reverse bending portion 3 formed on both sides of the main body bending portion 2 in the measuring tape 1, and the free end of the extending portion 9 is formed. When the part is extended until it comes into contact with the object to be measured 10 and a line is drawn on the object to be measured 6 after the measurement with the measuring tape 1, the measuring tape 1 can be used as a line drawing ruler. In some cases.

  Further, in FIG. 4 in the embodiment, the free end portion of the extending portion 9 formed on the outer side of the reverse curved portion 3 formed on both sides of the main body curved portion 2 in the measuring tape 1 is in contact with the object to be measured 10. However, there may be a gap between the free end portion of the extending portion 9 and the DUT 10 so as not to affect the drawing.

  Then, as shown in FIG. 5A, a linear portion 11 may be provided at the central portion of the main body bending portion 2 of the measuring tape 1, so that the linear portion of the main body bending portion 2 is measured when measuring dimensions. There is an advantage that it can be stably abutted on the upper surface of the plate and dimension measurement can be easily performed.

  Further, as shown in FIG. 5B, in addition to the central portion of the main body bending portion 2 described above, a straight portion 11 may be provided in each of the central portions of the reverse bending portions 3 on both sides. In some cases, the balance of the bending strength at each of the curved portions 2 and the reverse curved portions 3 on both sides is stabilized.

  Furthermore, as shown in FIG. 6, there are cases in which straight portions 11 are provided between the main body curved portion 2 and the oppositely curved portions 3 on both sides of the measuring tape 1, so that most of the measurement scale 4 is measured during the dimension measurement. Can be displayed on the flat surface formed by the straight line part, making it easy to read the measurement scale 4 or making the side of one reverse curved part easily contact the upper surface of the object to be measured. There is a merit.

  FIG. 7 is a diagram (left diagram) showing a state in which the measuring tape 1 pulled out from the case 6 is stretched upright in the air (left diagram), and a cross-sectional view (right diagram) in the width direction of the measuring tape 1. The action of preventing the bending of the main body bending portion 2 or the reverse bending portion 3 of the measuring tape 1 in the upright extending state will be described.

  In the left view of FIG. 7, when the measuring tape 1 according to the present invention is pulled out from the case 6 for a predetermined length, fixed to this pulled-out position by the operation of the brake lever 8 and extended upright in the air, the measuring tape 1 is A curved inward side of the measuring tape 1 depending on the weight of the measuring tape 1 and the weight of the locking piece 5 provided at the tip of the measuring tape 1, that is, the curved inward side of the main body bending portion 2 or the reverse bending portion 3 of the measuring tape 1. Try to bend to the side.

  However, if the measuring tape 1 is to be bent in the direction of the arrow B, that is, the curved inward side of the main body bending portion 2 in the right view of FIG. 7, the reverse is formed on both sides of the main body bending portion 2 in the right view of FIG. The bending portion 3 exerts a drag force in the direction of arrow A, and the bending of the measuring tape 1 in the direction of arrow B (inward bending of the main body bending portion 2) can be prevented.

  When the measuring tape 1 is bent in the direction of the arrow A, that is, on the inward side of the reverse bending portion 3 formed on both sides of the main body bending portion 2 in the right view of FIG. 7, the main body in the right view of FIG. The bending portion 2 exerts a drag force in the direction of arrow B, and the bending of the measuring tape 1 in the direction of arrow A (inward bending of the reverse bending portion 3) can be prevented.

  Therefore, even if the case 6 is pulled out from the case 6 by a predetermined length and is fixed at the pulled-out position by the operation of the brake lever 8 and is extended upright in the air, the main body bending portion 2 or the reverse bending portion 3 of the measuring tape 1 up to a predetermined length. Therefore, it is possible to stably measure a distance between a measurement point at a low position such as a floor and a measurement point at a high position such as a ceiling.

  Reference numeral 7 in the drawings in the embodiment is a measurement tape inlet / outlet through which the measurement tape 1 of the case 6 enters and exits.

Sectional drawing of the width direction which shows an example in the measuring tape of the tape measure which concerns on this invention. The top view of the measurement tape front-end | tip part vicinity. The side view of the measurement tape front-end | tip part vicinity. Sectional drawing of the measurement tape width direction which shows the other example in a reverse curve part. Sectional drawing of the measurement tape width direction which shows the other example of a measurement tape. Sectional drawing of the measurement tape width direction which shows the other example of a measurement tape. The figure which shows the state which extended the measurement tape pulled out from the case upright in the air, and sectional drawing of the width direction in the measurement tape. Sectional drawing of the measurement tape width direction which shows the conventional measurement tape.

DESCRIPTION OF SYMBOLS 1 Measuring tape 2 Main body curved part 3 Reverse curved part 4 Measurement scale 5 Locking piece 6 Case 7 Measuring tape entrance / exit 8 Brake lever 9 Extension part 10 Measured object 11 Linear part 12 Measuring tape 13 Curved part

Claims (9)

  The measuring tape is a measuring tape having a tape measure that is curved in the width direction in a normal state, and formed on both sides in the width direction of the measuring tape are reverse curved portions that are curved in a direction opposite to the bending direction of the measuring tape body. Measuring tape with a tape measure.   When the measuring tape is brought into contact with the measured object so that the curved surface of the measuring tape body protrudes downward on the outer side of the reverse curved part, the direction of approaching the measured object The measuring tape of the tape measure of Claim 1 formed by forming the extending part extended in.   The measuring tape of a tape measure according to claim 1, wherein the measuring tape body is formed by providing a straight portion at a central portion of at least one of the curved portion of the measuring tape main body or the opposite curved portions on both sides.   The measuring tape of the tape measure of Claim 1 formed by providing a linear part between the curved part of the said measurement tape main body, and the reverse curved part of both sides, respectively.   The tape measuring tape according to claim 1, wherein the measuring tape is made of a metal material.   The tape measuring tape according to claim 1, wherein the measuring tape is formed of a resin material.   The measuring tape of a tape measure according to claim 1, wherein the measuring tape is made of a textile material.   The measuring tape of a tape measure according to claim 7, wherein the woven fabric is made of woven aramid fibers.   The measuring tape of a tape measure according to claim 7, wherein the woven fabric is composed of woven aramid fibers and glass fibers.

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