WO2020159114A1 - Blade for tape measure - Google Patents

Blade for tape measure Download PDF

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Publication number
WO2020159114A1
WO2020159114A1 PCT/KR2020/000708 KR2020000708W WO2020159114A1 WO 2020159114 A1 WO2020159114 A1 WO 2020159114A1 KR 2020000708 W KR2020000708 W KR 2020000708W WO 2020159114 A1 WO2020159114 A1 WO 2020159114A1
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WO
WIPO (PCT)
Prior art keywords
blade
curvature
tape measure
width direction
convex shape
Prior art date
Application number
PCT/KR2020/000708
Other languages
French (fr)
Korean (ko)
Inventor
최상호
Original Assignee
최상호
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020190030087A external-priority patent/KR102122871B1/en
Priority claimed from KR1020190128965A external-priority patent/KR20200094615A/en
Application filed by 최상호 filed Critical 최상호
Publication of WO2020159114A1 publication Critical patent/WO2020159114A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/10—Measuring tapes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/10—Measuring tapes
    • G01B3/1003—Measuring tapes characterised by structure or material; characterised by layout or indicia
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/10—Measuring tapes
    • G01B3/1005—Means for controlling winding or unwinding of tapes

Definitions

  • the present invention relates to a blade of a tape measure, one end of which can be pulled out from the housing of the tape measure and the other end wound around a bobbin disposed inside the housing.
  • the tape measure is provided with a rotatable bobbin 3 interlocked with a spring 8 inside the housing 6 as shown in FIG. 1, one end of which can be pulled out of the housing 6 and the other end of the bobbin 3 ) Is provided with a blade 1 wound on.
  • the user withdraws one end of the blade 1 to the outside to measure the length, and when the length measurement operation is completed, the blade 1 is wound on the bobbin 3 by the spring 8 and into the housing 6.
  • FIG. 2 the cross-sectional structure of the conventional general blade 1 is shown in FIG. 2.
  • the conventional blade 1 has a convex lower surface and a concave upper surface as shown in FIG. 2, and has a concave-convex curvature cross-section structure extending in a lengthwise direction.
  • the curved cross-sectional structure prevents the blade 1 from being bent in the longitudinal direction by the weight of the blade itself when the blade 1 is withdrawn, and also flattened when the blade 1 is wound around the bobbin 3. It is intended to be able to wind up.
  • the length at which the blade can be pulled out without being bent in the longitudinal direction that is, the standable length is very important. The longer the upright length is, the more convenient the user's length measurement work is.
  • a blade having a cross-sectional structure as shown in FIG. 3 is also proposed to extend the upright length.
  • FIG. 3 is a first curvature portion 1a in the width direction center having a first curvature radius R1 in a convex shape toward the lower portion, and a second curvature radius R2 longer than the first curvature radius in the convex shape toward the lower portion. It is a cross-sectional view of the blade (1) having a second curvature portion (1b) formed on both sides of the width direction of the first curvature portion (1a).
  • FIG. 3 Although the cross-sectional structure shown in FIG. 3 has an advantage of increasing the upright length of the blade, there is a problem that the blade is difficult to flatten due to the first curvature portion 1a having very strong rigidity when the blade is wound around the bobbin.
  • the present invention has been devised to solve the problems of the prior art as described above, and to increase the upright length of the blade or to propose a blade for tape measure having a structure in which the blade can be flattened more easily when the blade is wound on a bobbin. .
  • a groove portion for bending induction extending along the longitudinal direction of the blade is formed on the upper or lower surface of the blade It is characterized by.
  • the bending induction groove portion may be symmetrically formed on one side in the width direction and the other side in the width direction of the blade.
  • the blade has a first curvature portion in a width direction center having a first curvature radius in a convex shape toward the lower portion and a second curvature radius longer than the first curvature radius in a convex shape toward the lower portion. It comprises a second curvature portion formed on both sides in the width direction of the one curvature portion, the groove for bending can be formed along the boundary of the first curvature portion and the second curvature portion.
  • the blade has a first curvature portion in a width direction center having a first curvature radius in a convex shape toward the lower portion and a second curvature radius longer than the first curvature radius in a convex shape toward the lower portion. It comprises a second curvature portion formed on both sides in the width direction of the one curvature portion, the groove for bending can be formed in the first curvature portion.
  • the blade has a first curvature portion in the width direction center having a first curvature radius in a convex shape toward the upper portion and a second curvature radius in a convex shape toward the lower portion, on both sides in the width direction of the first curvature portion. It is made to include a second curvature portion formed, the bend inducing groove portion may be formed in the first curvature portion.
  • the blade comprises a central flat portion in the center of the width direction having a flat shape and an edge curvature portion formed on both sides of the central flat portion in a convex shape toward the lower portion, wherein the bending induction groove portion is the central flat portion Can be formed on.
  • the groove for inducing the bending may be formed in the entire longitudinal direction or a part of the longitudinal direction of the blade.
  • the length of the groove portion for bending induction is continuous at least 2 m or more.
  • the plurality of grooves for bending induction are formed while being spaced apart from each other along the longitudinal direction of the blade, and the total length of the blades formed with the grooves for bending induction is greater than the total length of the blades in which the grooves for bending induction are not formed. Long is preferred.
  • a transparent film may be adhered to the upper surface of the blade.
  • the blade in a tape measure blade having a length extending in the longitudinal direction, is convex toward the lower portion and the first curvature portion in the center of the width direction having a first radius of curvature in a convex shape toward the lower portion. It has a second radius of curvature that is longer than the first radius of curvature, and includes second curvature portions formed on both sides in the width direction of the first curvature, and the thickness of the first curvature is thinner than the thickness of the second curvature. It is characterized by.
  • the blade in a tape measure blade having a belt shape extending in a lengthwise direction, is convex toward the upper portion, toward a first curvature portion and a lower portion in the center of the width direction having a first radius of curvature. It has a second radius of curvature in a convex shape and includes second curvature portions formed on both sides in the width direction of the first curvature portion, wherein the thickness of the first curvature portion is thinner than the thickness of the second curvature portion.
  • the blade in a tape measure blade having a strip shape extending in a lengthwise direction, has a central flat portion in a width direction having a flat shape and a convex shape toward the lower portion on both sides of the central flat portion. It comprises a formed edge curvature, characterized in that the thickness of the central flat portion is thinner than the thickness of the edge curvature.
  • the present invention by inducing the blade to bend in the width direction by the self-loading of the blade due to the groove for bending induction increases the upright length of the blade or the blade due to the groove for bending induction when the blade is wound around the bobbin It provides a tape measure blade that can have a flat structure more easily.
  • FIGS. 2 and 3 are cross-sectional views of a conventional tape measure blade
  • Figure 4 is a cross-sectional view of the blade according to the first embodiment of the present invention.
  • Figure 5 is a partial perspective view of Figure 4,
  • Figure 6 is a view showing the operating state of Figure 4,
  • Figure 7 is a modified form of Figure 4,
  • Figure 8 is a view showing the operating state of Figure 7,
  • FIG. 9 is a cross-sectional view of a blade according to a second embodiment of the present invention.
  • FIG. 10 is a view showing an operating state of FIG. 9,
  • FIG. 11 is a cross-sectional view of a blade according to a third embodiment of the present invention.
  • FIG. 13 is a cross-sectional view of a blade according to a fourth embodiment of the present invention.
  • FIG. 14 is a partial perspective view of a blade according to a fifth embodiment of the present invention.
  • FIG. 17 is a cross-sectional view of the blade showing the modified form of FIG. 14,
  • FIG. 18 is a cross-sectional view of a blade according to a sixth embodiment of the present invention.
  • FIG. 19 is a bottom view of FIG. 18,
  • FIG. 20 is a cross-sectional view of a blade according to a seventh embodiment of the present invention.
  • FIG. 21 is a cross-sectional view of a blade according to an eighth embodiment of the present invention.
  • FIG. 22 is a cross-sectional view of a blade according to a ninth embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of the blade according to the first embodiment of the present invention
  • FIG. 5 is a partial perspective view of FIG. 4
  • FIG. 6 is a view showing the operating state of FIG. 4.
  • a plurality of bending guide grooves 101 are formed on the lower surface of the blade 100.
  • a groove portion for bending induction may be formed on the top surface of the blade 100, but considering the fact that a scale is printed on the top surface of the blade 100, a plurality of bending groove portions on the bottom surface of the blade 100 It is preferable that 101 is formed.
  • the blade 100 is provided with one curvature having a radius of curvature R1 in a convex shape toward the bottom.
  • the groove 101 for bending induction is formed while extending along the longitudinal direction of the blade 100.
  • a plurality of bent induction grooves 101 are provided, specifically two, and are symmetrically formed on one side in the width direction and the other side in the width direction of the blade 100.
  • the groove 101 for bending induction can be formed by passing a thin metal plate cut into a certain width through a rolling roller.
  • the groove portion 101 for bending induction may be formed on a thin metal plate cut to a certain width by a method such as polishing or laser processing.
  • the curved (concave-convex) convex shape having a convex bottom surface and a concave top surface
  • the cross-sectional structure of the curvature is formed, and then, by printing a scale on the top surface of the metal plate, the present blade 100 can be manufactured.
  • FIG. 6 is a view showing an operating state of FIG. 4.
  • the blade 100 When the blade 100 is pulled out from the housing of the tape measure, the blade 100 is bent in the width direction based on the groove 101 for bending induction as shown in FIG. 6 by the load of the blade 100 itself, thereby causing the blade ( 100), while maintaining the original shape, the first curved portion 110 in the width direction with the first radius of curvature (R1), and the groove portion 101 for bending in both directions in the width direction of the first curved beam 110 By having the second curved portion 120 bent in the width direction.
  • the blade 100 has a structure bent in the width direction due to the weight of the blade, and the structure bent in the width direction exerts a strong resistance to the blade being bent in the longitudinal direction, and thus, the conventional blade 100 In comparison, it has a longer upright length.
  • FIG. 7 is a modified form of FIG. 4, and FIG. 8 is a view showing an operating state of FIG. 7.
  • two bending guide grooves 101 and 102 are formed on both sides of the blade 100 in the width direction.
  • FIG. 7 may have three curved portions 110, 120, and 130 as shown in FIG. 8, while the bending induction groove 101 is bent.
  • the first curved portion 110 in the width direction center having the first radius of curvature R1 and the groove portion 101 for inducing bending at both sides in the width direction of the first curved portion 110 ), the second curved portion 120 bent in the width direction and the third curved portion 130 bent in the width direction by the groove portion 102 for bending in both directions in the width direction of the second curved portion 120.
  • the number of groove portions for bending induction formed in the blade 100 may be variously changed.
  • only one groove portion for bending induction may be provided, or six or eight grooves may be provided.
  • FIG. 9 is a cross-sectional view of a blade according to a second embodiment of the present invention
  • FIG. 10 is a view showing an operating state of FIG. 9.
  • the blade 200 has a first curvature portion 210 in the width direction center having a first curvature radius R1 in a convex shape toward the lower portion, and a first curvature radius R1 in a convex shape toward the lower portion. ) While having a second curvature radius R2 longer than that of the second curvature portion 220 formed on both sides in the width direction of the first curvature portion 210.
  • the bending guide groove 201 is formed along the boundary between the first curvature portion 210 and the second curvature portion 220.
  • FIG. 11 is a cross-sectional view of a blade according to a third embodiment of the present invention
  • FIG. 12 is a view showing an operating state of FIG. 11.
  • the blade 300 has a first curvature portion 310 in the width direction center having a first curvature radius R1 in a convex shape toward the lower portion, and a first curvature radius R1 in a convex shape toward the lower portion. ) While having a second curvature radius R2 longer than that of the second curvature portion 320 formed on both sides in the width direction of the first curvature portion 310.
  • a plurality of groove portions 301 for inducing bending are formed on the lower surface of the first curvature portion 310.
  • the first curvature portion 310 is bent in the width direction in the plurality of bending induction grooves 301 due to the weight of the blade 200 as shown in FIG. 12.
  • the curvature portion 310 is converted into a plurality of first curved portions 311 to have a longer upright length.
  • the structure of FIG. 12 may occur due to the weight of the blade, but the structure of FIG. 12 may occur due to external force while the blade is wound around the bobbin.
  • the blade 300 when the blade 300 is wound on the bobbin, the blade 300 may be converted into a relatively flat structure as shown in FIG. 12 by external force. Therefore, the bobbin and the housing around which the blade 300 is wound can be relatively small.
  • FIG. 13 is a cross-sectional view of a blade according to a fourth embodiment of the present invention.
  • the blade 400 has a first curvature portion 410 in the width direction center having a first curvature radius R1 in a convex shape toward the lower portion, and a first curvature radius R1 in a convex shape toward the lower portion. ) While having a second radius of curvature R2 longer than that of the second curvature 420 formed on both sides of the first curvature portion 410 in the width direction.
  • a plurality of bending guide grooves 401 are formed on the lower surface of the first curvature portion 410.
  • a groove portion 402 for inducing bending is formed along the boundary between the first curvature portion 210 and the second curvature portion 220.
  • the fourth embodiment is a combination of the second and third embodiments.
  • the groove for bending may be formed only in a part of the blade in the longitudinal direction.
  • the length of the groove portion for bending induction is preferably continuous at least 2 m or more, and more preferably, the length of the groove portion for bending induction may be 2 m or more and 4 m or less.
  • an upright length of a slightly smaller length than a groove for bending induction may be realized by forming a groove for bending induction from about one to 3 m to 4 m from one end of a blade drawn out of the housing.
  • FIG. 14 is a partial perspective view of a blade according to a fifth embodiment of the present invention
  • FIGS. 15 and 16 are cross-sectional views of the blade showing the operating state of FIG. 14.
  • the blade 500 has a first curvature portion 210 in the width direction center having a first curvature radius R1 in a convex shape toward the upper portion, and a second curvature radius R2 in a convex shape toward the lower portion. ), the second curvature portion 220 formed on both sides in the width direction of the first curvature portion 210.
  • a plurality of bending induction grooves 501 are formed on the lower surface of the first curvature portion 510.
  • Bending induction groove 501 of this embodiment is formed in a rectangular cross-sectional shape, and in the first to third embodiments, it is illustrated that the groove for bending induction is formed in a triangular cross-sectional shape. In this way, the shape of the groove portion for bending induction can be variously modified.
  • the first curvature portion 510 is bent in the width direction in the plurality of bending induction grooves 501 due to the weight of the blade 500 as shown in FIG. It will have an upright length.
  • the first curvature portion 510 is deformed into an oval shape due to the weight of the blade 500, and thus has a longer erect length.
  • the blade 500 when the blade 500 is wound on the bobbin, the blade 500 can be easily converted into a relatively flat structure as shown in FIG. 16 by external force. Therefore, the bobbin and the housing in which the blade 500 is wound can be relatively small.
  • the first curvature portion 510 of the present embodiment is convex toward the upper portion, it is difficult to wind the bobbin without the groove portion 501 for induction bending.
  • the groove portion 501 for induction bending is solved.
  • FIG. 17 is a cross-sectional view of the blade showing the modified form of FIG. 14.
  • the transparent film 630 is attached to the top surface of the blade 500.
  • the transparent film 630 can prevent the blade 500 from being damaged due to the thin thickness of the portion where the groove 500 for bending induction is formed when the blade 500 having the groove 50 for induction bending is used for a long time.
  • the transparent film 630 may be applied to other embodiments as well as this embodiment.
  • FIG. 18 is a cross-sectional view of a blade according to a sixth embodiment of the present invention
  • FIG. 19 is a bottom view of FIG. 18.
  • the blade 600 has a central flat portion 610 in the center of the width direction having a flat shape and a second curvature radius R2 in a convex shape toward the lower portion, while the width of the central flat portion 610 It consists of an edge curvature portion 620 formed on both sides of the direction.
  • a plurality of groove portions 601 for inducing bending are formed on the lower surface of the central flat portion 610.
  • the groove portion 601 for inducing bending may be continuously formed in the entire longitudinal direction of the blade 600, as shown in FIG. 19, the groove portion 601 for induction bending is mutually along the longitudinal direction of the blade 600. A plurality of spaced apart can be formed.
  • the portion L1 in which the groove portion 601 for bending induction along the longitudinal direction is formed and the portion L2 in which the groove portion 601 for bending induction along the longitudinal direction are not formed coexist, as well as L1.
  • the section and the L2 section are repeated several times or dozens of times.
  • the entire length of the blade 600 on which the bent induction groove 601 is formed (that is, the total length of the L1 section) is the bent induction groove 601. It is preferable that it is longer than the entire length of the blade 600 that is not formed (that is, the total length of the L2 section).
  • FIG. 20 is a cross-sectional view of a blade according to a seventh embodiment of the present invention.
  • the blade 700 includes a first curvature portion 710 in the width direction center having a first curvature radius R1 in a convex shape toward the lower portion, and a first curvature radius R1 in a convex shape toward the lower portion. ) While having a second curvature radius R2 longer than that of the second curvature portion 720 formed on both sides in the width direction of the first curvature portion 710.
  • the thickness t1 of the first curvature portion 710 is thinner than the thickness t2 of the second curvature portion 720.
  • Such a structure has a longer erectable length by the structures of the first curvature portion 710 and the second curvature portion 720, and the first curvature portion 710 having a thinner thickness t1 has a blade
  • the 700 When the 700 is wound on the bobbin, it can be easily converted into a relatively flat structure by external force.
  • the blade 700 has a longer upright length, and the bobbin and the housing to be wound can be relatively small.
  • 21 is a cross-sectional view of a blade according to an eighth embodiment of the present invention.
  • the blade 800 has a first curvature portion 810 in the width direction center having a first curvature radius R1 in a convex shape toward the upper portion, and a second curvature radius R2 in a convex shape toward the lower portion. ), the second curvature portion 820 formed on both sides in the width direction of the first curvature portion 810.
  • the thickness t1 of the first curvature portion 810 is thinner than the thickness t2 of the second curvature portion 820.
  • Such a structure has a longer erectable length by the structures of the first curvature portion 810 and the second curvature portion 820, and the first curvature portion 810 having a thinner thickness t1 is a blade
  • the 800 When the 800 is wound on the bobbin, it can be easily converted into a relatively flat structure by external force.
  • the blade 800 has a longer upright length, and the bobbin and the housing to be wound can be relatively small.
  • FIG. 22 is a cross-sectional view of a blade according to a ninth embodiment of the present invention.
  • the blade 900 has a central flat portion 910 in the center of the width direction having a flat shape, and a width of the central flat portion 910 while having a second radius of curvature R2 in a convex shape toward the lower portion. It consists of an edge curvature portion 920 formed on both sides of the direction.
  • the thickness t1 of the central flat portion 910 is thinner than the thickness t2 of the edge curvature portion 920.
  • the present invention can be used as a tape measure blade.

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  • General Physics & Mathematics (AREA)
  • Tape Measures (AREA)

Abstract

The present invention relates to a blade, for a tape measure, having bend-inducing groove portions such that the standout length of the blade is increased or the blade can more easily be flattened when the blade is wound around a bobbin.

Description

줄자용 블레이드Tape Measure Blade
본 발명은, 일단이 줄자의 하우징으로부터 인출될 수 있으며 타단이 하우징의 내부에 배치된 보빈에 권취되기 위한 줄자의 블레이드에 관한 것이다.The present invention relates to a blade of a tape measure, one end of which can be pulled out from the housing of the tape measure and the other end wound around a bobbin disposed inside the housing.
일반적으로 줄자는 도 1에 도시된 바와 같이 하우징(6) 내부에 스프링(8)과 연동하여 회전 가능한 보빈(3)이 구비되고, 일단이 하우징(6) 외부로 인출 가능하며 타단이 보빈(3)에 권취되는 블레이드(1)를 구비한다.Generally, the tape measure is provided with a rotatable bobbin 3 interlocked with a spring 8 inside the housing 6 as shown in FIG. 1, one end of which can be pulled out of the housing 6 and the other end of the bobbin 3 ) Is provided with a blade 1 wound on.
또한 사용자는 길이를 측정하기 위하여 블레이드(1)의 일단을 외부로 인출하며, 길이 측정 작업을 완료하면 스프링(8)에 의하여 블레이드(1)가 보빈(3)에 감기면서 하우징(6) 내부로 복귀한다.In addition, the user withdraws one end of the blade 1 to the outside to measure the length, and when the length measurement operation is completed, the blade 1 is wound on the bobbin 3 by the spring 8 and into the housing 6. To return
한편 종래의 일반적인 블레이드(1)의 단면 구조는 도 2와 같다.On the other hand, the cross-sectional structure of the conventional general blade 1 is shown in FIG. 2.
통상의 블레이드(1)는 도 2와 같이 볼록한 하면과 오목한 상면을 가지면서 휘어진 형태(concave-convex curvature)의 횡단면 구조가 길이방향으로 길게 연장되는 띠 형태이다.The conventional blade 1 has a convex lower surface and a concave upper surface as shown in FIG. 2, and has a concave-convex curvature cross-section structure extending in a lengthwise direction.
이와 같이 휘어진 횡단면 구조는 블레이드(1)를 인출하였을 때 블레이드 자체의 무게에 의하여 블레이드(1)가 길이방향으로 꺽여지는 것을 방지하며 아울러 블레이드(1)가 보빈(3)에 감길 때는 평평하게 펴지면서 감길 수 있도록 하기 위한 것이다.The curved cross-sectional structure prevents the blade 1 from being bent in the longitudinal direction by the weight of the blade itself when the blade 1 is withdrawn, and also flattened when the blade 1 is wound around the bobbin 3. It is intended to be able to wind up.
한편 줄자에 있어서, 블레이드가 길이방향으로 꺽여지지 않으면서 인출될 수 있는 길이, 즉 직립 가능 길이(standout length)는 매우 중요하다. 직립 가능 길이가 길면 길수록 사용자의 길이 측정 작업이 매우 편리하게 된다.On the other hand, in the tape measure, the length at which the blade can be pulled out without being bent in the longitudinal direction, that is, the standable length is very important. The longer the upright length is, the more convenient the user's length measurement work is.
한편 직립 가능 길이를 연장하기 위하여 도 3과 같은 횡단면 구조의 블레이드가 제안되기도 한다.Meanwhile, a blade having a cross-sectional structure as shown in FIG. 3 is also proposed to extend the upright length.
도 3은 하부를 향하여 볼록한 형태로 제1곡률반경(R1)을 가진 폭방향 중앙의 제1곡률부(1a)와, 하부를 향하여 볼록한 형태로 제1곡률반경보다 긴 제2곡률반경(R2)을 가지며 제1곡률부(1a)의 폭방향 양측에 형성된 제2곡률부(1b)를 가진 블레이드(1)의 단면도이다.3 is a first curvature portion 1a in the width direction center having a first curvature radius R1 in a convex shape toward the lower portion, and a second curvature radius R2 longer than the first curvature radius in the convex shape toward the lower portion. It is a cross-sectional view of the blade (1) having a second curvature portion (1b) formed on both sides of the width direction of the first curvature portion (1a).
도 3의 종래 기술은 미국 특허 등록 US 6,324,769 "RULE ASSEMBLY WITH INCREASED BLADE STANDOUT"(2001. 12. 4. 등록)에 제시된 것이다.The prior art of FIG. 3 is presented in US Pat. No. 6,324,769 "RULE ASSEMBLY WITH INCREASED BLADE STANDOUT" (registered on Dec. 4, 2001).
도 3과 같은 횡단면 구조는 블레이드의 직립 가능 길이를 늘린다는 장점이 있지만, 블레이드가 보빈에 감길 때 매우 강한 강성을 가진 제1곡률부(1a)로 인하여 블레이드가 평평하게 펴지기 어렵다는 문제가 있다.Although the cross-sectional structure shown in FIG. 3 has an advantage of increasing the upright length of the blade, there is a problem that the blade is difficult to flatten due to the first curvature portion 1a having very strong rigidity when the blade is wound around the bobbin.
블레이드가 보빈에 감길 때 평평하게 펴지지 않는다면 줄자의 하우징이 대형화된다는 문제가 발생한다.If the blade is not flattened when wound around the bobbin, the problem arises that the housing of the tape measure becomes large.
본 발명은 상기와 같은 종래 기술의 문제점을 해결하기 위하여 안출된 것으로서, 블레이드의 직립 가능 길이를 늘리거나 블레이드가 보빈에 감길 때 블레이드가 보다 쉽게 평평하게 펴질 수 있는 구조의 줄자용 블레이드를 제안하고자 한다.The present invention has been devised to solve the problems of the prior art as described above, and to increase the upright length of the blade or to propose a blade for tape measure having a structure in which the blade can be flattened more easily when the blade is wound on a bobbin. .
상기의 과제를 해결하기 위하여 본 발명은, 길이방향으로 길게 연장되는 띠 형태의 줄자용 블레이드에 있어서, 상기 블레이드의 상면 또는 하면에 상기 블레이드의 길이방향을 따라 연장되는 꺽임 유도용 홈부가 형성되는 것을 특징으로 한다.In order to solve the above problems, the present invention, in the blade for a tape measure in the form of a strip extending in the longitudinal direction, a groove portion for bending induction extending along the longitudinal direction of the blade is formed on the upper or lower surface of the blade It is characterized by.
상기에 있어서, 상기 꺽임 유도용 홈부는 상기 블레이드의 폭방향 일측 및 폭방향 타측에 대칭적으로 형성될 수 있다.In the above, the bending induction groove portion may be symmetrically formed on one side in the width direction and the other side in the width direction of the blade.
상기에 있어서, 상기 블레이드는 하부를 향하여 볼록한 형태로 제1곡률반경을 가진 폭방향 중앙의 제1곡률부와 하부를 향하여 볼록한 형태로 상기 제1곡률반경보다 긴 제2곡률반경을 가지면서 상기 제1곡률부의 폭방향 양측에 형성된 제2곡률부를 포함하여 이루어지며, 상기 꺽임 유도용 홈부는 상기 제1곡률부와 상기 제2곡률부의 경계를 따라 형성될 수 있다.In the above, the blade has a first curvature portion in a width direction center having a first curvature radius in a convex shape toward the lower portion and a second curvature radius longer than the first curvature radius in a convex shape toward the lower portion. It comprises a second curvature portion formed on both sides in the width direction of the one curvature portion, the groove for bending can be formed along the boundary of the first curvature portion and the second curvature portion.
상기에 있어서, 상기 블레이드는 하부를 향하여 볼록한 형태로 제1곡률반경을 가진 폭방향 중앙의 제1곡률부와 하부를 향하여 볼록한 형태로 상기 제1곡률반경보다 긴 제2곡률반경을 가지면서 상기 제1곡률부의 폭방향 양측에 형성된 제2곡률부를 포함하여 이루어지며, 상기 꺽임 유도용 홈부는 상기 제1곡률부에 형성될 수 있다.In the above, the blade has a first curvature portion in a width direction center having a first curvature radius in a convex shape toward the lower portion and a second curvature radius longer than the first curvature radius in a convex shape toward the lower portion. It comprises a second curvature portion formed on both sides in the width direction of the one curvature portion, the groove for bending can be formed in the first curvature portion.
상기에 있어서, 상기 블레이드는 상부를 향하여 볼록한 형태로 제1곡률반경을 가진 폭방향 중앙의 제1곡률부와 하부를 향하여 볼록한 형태로 제2곡률반경을 가지면서 상기 제1곡률부의 폭방향 양측에 형성된 제2곡률부를 포함하여 이루어지며, 상기 꺽임 유도용 홈부는 상기 제1곡률부에 형성될 수 있다.In the above, the blade has a first curvature portion in the width direction center having a first curvature radius in a convex shape toward the upper portion and a second curvature radius in a convex shape toward the lower portion, on both sides in the width direction of the first curvature portion. It is made to include a second curvature portion formed, the bend inducing groove portion may be formed in the first curvature portion.
상기에 있어서, 상기 블레이드는 평면 형태를 가진 폭방향 중앙의 중앙 평탄부와 하부를 향하여 볼록한 형태로 상기 중앙 평탄부의 양측에 형성된 가장자리 곡률부를 포함하여 이루어지며, 상기 꺽임 유도용 홈부는 상기 중앙 평탄부에 형성될 수 있다.In the above, the blade comprises a central flat portion in the center of the width direction having a flat shape and an edge curvature portion formed on both sides of the central flat portion in a convex shape toward the lower portion, wherein the bending induction groove portion is the central flat portion Can be formed on.
상기에 있어서, 상기 꺽임 유도용 홈부는 상기 블레이드의 길이방향 전체 또는 길이방향 일부에 형성될 수 있다.In the above, the groove for inducing the bending may be formed in the entire longitudinal direction or a part of the longitudinal direction of the blade.
상기에 있어서, 상기 꺽임 유도용 홈부의 길이는 적어도 2m 이상 연속되는 것이 바람직하다.In the above, it is preferable that the length of the groove portion for bending induction is continuous at least 2 m or more.
상기에 있어서, 상기 꺽임 유도용 홈부는 상기 블레이드의 길이방향을 따라 서로 이격되면서 복수개 형성되며, 상기 꺽임 유도용 홈부가 형성된 블레이드의 전체 길이는 상기 꺽임 유도용 홈부가 형성되지 않은 블레이드의 전체 길이보다 긴 것이 바람직하다.In the above, the plurality of grooves for bending induction are formed while being spaced apart from each other along the longitudinal direction of the blade, and the total length of the blades formed with the grooves for bending induction is greater than the total length of the blades in which the grooves for bending induction are not formed. Long is preferred.
상기에 있어서, 상기 블레이드의 상면에 투명필름이 접착될 수 있다.In the above, a transparent film may be adhered to the upper surface of the blade.
본 발명의 다른 사상으로, 길이방향으로 길게 연장되는 띠 형태의 줄자용 블레이드에 있어서, 상기 블레이드는 하부를 향하여 볼록한 형태로 제1곡률반경을 가진 폭방향 중앙의 제1곡률부와 하부를 향하여 볼록한 형태로 상기 제1곡률반경보다 긴 제2곡률반경을 가지면서 상기 제1곡률부의 폭방향 양측에 형성된 제2곡률부를 포함하여 이루어지며, 상기 제1곡률부의 두께는 상기 제2곡률부의 두께보다 얇은 것을 특징으로 한다.In another aspect of the present invention, in a tape measure blade having a length extending in the longitudinal direction, the blade is convex toward the lower portion and the first curvature portion in the center of the width direction having a first radius of curvature in a convex shape toward the lower portion. It has a second radius of curvature that is longer than the first radius of curvature, and includes second curvature portions formed on both sides in the width direction of the first curvature, and the thickness of the first curvature is thinner than the thickness of the second curvature. It is characterized by.
본 발명의 또다른 사상으로, 길이방향으로 길게 연장되는 띠 형태의 줄자용 블레이드에 있어서, 상기 블레이드는 상부를 향하여 볼록한 형태로 제1곡률반경을 가진 폭방향 중앙의 제1곡률부와 하부를 향하여 볼록한 형태로 제2곡률반경을 가지면서 상기 제1곡률부의 폭방향 양측에 형성된 제2곡률부를 포함하여 이루어지며, 상기 제1곡률부의 두께는 상기 제2곡률부의 두께보다 얇은 것을 특징으로 한다.In still another aspect of the present invention, in a tape measure blade having a belt shape extending in a lengthwise direction, the blade is convex toward the upper portion, toward a first curvature portion and a lower portion in the center of the width direction having a first radius of curvature. It has a second radius of curvature in a convex shape and includes second curvature portions formed on both sides in the width direction of the first curvature portion, wherein the thickness of the first curvature portion is thinner than the thickness of the second curvature portion.
본 발명의 또다른 사상으로, 길이방향으로 길게 연장되는 띠 형태의 줄자용 블레이드에 있어서, 상기 블레이드는 평면 형태를 가진 폭방향 중앙의 중앙 평탄부와 하부를 향하여 볼록한 형태로 상기 중앙 평탄부의 양측에 형성된 가장자리 곡률부를 포함하여 이루어지며, 상기 중앙 평탄부의 두께는 상기 가장자리 곡률부의 두께보다 얇은 것을 특징으로 한다.In another aspect of the present invention, in a tape measure blade having a strip shape extending in a lengthwise direction, the blade has a central flat portion in a width direction having a flat shape and a convex shape toward the lower portion on both sides of the central flat portion. It comprises a formed edge curvature, characterized in that the thickness of the central flat portion is thinner than the thickness of the edge curvature.
상기와 같이 본 발명은, 꺽임 유도용 홈부로 인하여 블레이드의 자체 하중에 의하여 블레이드가 폭방향으로 꺽이도록 유도하여 블레이드의 직립 가능 길이를 늘리거나 혹은 블레이드가 보빈에 감길 때 꺽임 유도용 홈부로 인하여 블레이드가 보다 쉽게 평평한 구조를 가질 수 있는 줄자용 블레이드를 제공한다.As described above, the present invention, by inducing the blade to bend in the width direction by the self-loading of the blade due to the groove for bending induction increases the upright length of the blade or the blade due to the groove for bending induction when the blade is wound around the bobbin It provides a tape measure blade that can have a flat structure more easily.
도 1은 종래의 기술의 줄자의 개념도,1 is a conceptual diagram of a tape measure of the prior art,
도 2 및 도 3은 종래의 줄자용 블레이드의 횡단면도,2 and 3 are cross-sectional views of a conventional tape measure blade,
도 4는 본 발명의 제1실시예에 의한 블레이드의 횡단면도, Figure 4 is a cross-sectional view of the blade according to the first embodiment of the present invention,
도 5는 도 4의 부분 사시도, Figure 5 is a partial perspective view of Figure 4,
도 6은 도 4의 작동 상태를 도시한 도면,Figure 6 is a view showing the operating state of Figure 4,
도 7은 도 4의 변형된 형태, Figure 7 is a modified form of Figure 4,
도 8은 도 7의 작동 상태를 도시한 도면,Figure 8 is a view showing the operating state of Figure 7,
도 9는 본 발명의 제2실시예에 의한 블레이드의 횡단면도, 9 is a cross-sectional view of a blade according to a second embodiment of the present invention,
도 10은 도 9의 작동 상태를 도시한 도면,10 is a view showing an operating state of FIG. 9,
도 11는 본 발명의 제3실시예에 의한 블레이드의 횡단면도, 11 is a cross-sectional view of a blade according to a third embodiment of the present invention,
도 12는 도 11의 작동 상태를 도시한 도면,12 is a view showing the operating state of Figure 11,
도 13은 본 발명의 제4실시예에 의한 블레이드의 횡단면도,13 is a cross-sectional view of a blade according to a fourth embodiment of the present invention,
도 14는 본 발명의 제5실시예에 의한 블레이드의 부분 사시도,14 is a partial perspective view of a blade according to a fifth embodiment of the present invention,
도 15 및 도 16은 도 14의 작동 상태를 도시한 블레이드의 횡단면도,15 and 16 are cross-sectional views of the blade showing the operating state of Figure 14,
도 17은 도 14의 변형된 형태를 보이는 블레이드의 횡단면도,17 is a cross-sectional view of the blade showing the modified form of FIG. 14,
도 18은 본 발명의 제6실시예에 의한 블레이드의 횡단면도,18 is a cross-sectional view of a blade according to a sixth embodiment of the present invention,
도 19는 도 18의 저면도,19 is a bottom view of FIG. 18,
도 20는 본 발명의 제7실시예에 의한 블레이드의 횡단면도, 20 is a cross-sectional view of a blade according to a seventh embodiment of the present invention,
도 21은 본 발명의 제8실시예에 의한 블레이드의 횡단면도,21 is a cross-sectional view of a blade according to an eighth embodiment of the present invention,
도 22는 본 발명의 제9실시예에 의한 블레이드의 횡단면도.22 is a cross-sectional view of a blade according to a ninth embodiment of the present invention.
아래에서는 첨부한 도면을 참조하여 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 본 발명의 실시예를 상세히 설명한다. 그러나 본 발명은 여러 가지 상이한 형태로 구현될 수 있으며 여기에서 설명하는 실시예에 한정되지 않는다. 그리고 도면에서 본 발명을 명확하게 설명하기 위해서 설명과 관계없는 부분은 생략하였으며, 명세서 전체를 통하여 유사한 부분에 대해서는 유사한 도면 부호를 부여하였다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains may easily practice. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. In addition, in order to clearly describe the present invention in the drawings, parts irrelevant to the description are omitted, and like reference numerals are assigned to similar parts throughout the specification.
명세서 전체에서, 어떤 부분이 어떤 구성요소를 "포함"한다고 할 때, 이는 특별히 반대되는 기재가 없는 한 다른 구성요소를 제외하는 것이 아니라 다른 구성요소를 더 포함할 수 있는 것을 의미한다.Throughout the specification, when a part “includes” a certain component, it means that the component may further include other components, not to exclude other components, unless otherwise stated.
본 발명의 제1실시예를 설명한다.The first embodiment of the present invention will be described.
도 4는 본 발명의 제1실시예에 의한 블레이드의 횡단면도이며, 도 5는 도 4의 부분 사시도이며, 도 6은 도 4의 작동 상태를 도시한 도면이다.4 is a cross-sectional view of the blade according to the first embodiment of the present invention, FIG. 5 is a partial perspective view of FIG. 4, and FIG. 6 is a view showing the operating state of FIG. 4.
본 실시예는 블레이드(100)의 하면에 복수의 꺽임 유도용 홈부(101)가 형성되어 있다. In this embodiment, a plurality of bending guide grooves 101 are formed on the lower surface of the blade 100.
실시예에 따라서는 블레이드(100)의 상면에 꺽임 유도용 홈부가 형성될 수도 있지만, 블레이드(100)의 상면에는 눈금이 인쇄된다는 점을 고려하면 블레이드(100)의 하면에 복수의 꺽임 유도용 홈부(101)가 형성되는 것이 바람직하다.Depending on the embodiment, a groove portion for bending induction may be formed on the top surface of the blade 100, but considering the fact that a scale is printed on the top surface of the blade 100, a plurality of bending groove portions on the bottom surface of the blade 100 It is preferable that 101 is formed.
블레이드(100)는 하부를 향하여 볼록한 형태로 하나의 곡률반경(R1)을 가진 하나의 곡률부를 구비하고 있다.The blade 100 is provided with one curvature having a radius of curvature R1 in a convex shape toward the bottom.
꺽임 유도용 홈부(101)는 블레이드(100)의 길이방향을 따라 연장되면서 형성된다.The groove 101 for bending induction is formed while extending along the longitudinal direction of the blade 100.
아울러 꺽임 유도용 홈부(101)는 복수개, 구체적으로는 2개가 마련되며, 블레이드(100)의 폭방향 일측 및 폭방향 타측에 대칭적으로 형성된다.In addition, a plurality of bent induction grooves 101 are provided, specifically two, and are symmetrically formed on one side in the width direction and the other side in the width direction of the blade 100.
꺽임 유도용 홈부(101)는, 일정한 폭으로 절단된 얇은 금속 판재를 압연 롤러를 통과하도록 하여 형성할 수 있다. 혹은 일정한 폭으로 절단된 얇은 금속 판재에 연마 또는 레이저 가공 등의 방법으로 꺽임 유도용 홈부(101)를 형성할 수도 있다.The groove 101 for bending induction can be formed by passing a thin metal plate cut into a certain width through a rolling roller. Alternatively, the groove portion 101 for bending induction may be formed on a thin metal plate cut to a certain width by a method such as polishing or laser processing.
금속 판재에 꺽임 유도용 홈부(101)를 형성한 후, 금속 판재에 열을 가한 다음 냉각 다이스를 통과하면서 볼록한 하면과 오목한 상면을 가지면서 휘어진(구체적으로는 하부를 향하여 볼록한) 형태(concave-convex curvature)의 횡단면 구조가 형성되며, 이후 금속 판재의 상면에 눈금을 인쇄하면 본 블레이드(100)가 제조될 수 있다.After forming the groove portion 101 for bending induction in the metal plate, after heating the metal plate, while passing through the cooling die, the curved (concave-convex) convex shape having a convex bottom surface and a concave top surface The cross-sectional structure of the curvature is formed, and then, by printing a scale on the top surface of the metal plate, the present blade 100 can be manufactured.
이와 같은 블레이드 제조 방법은 종래에 이미 널리 알려져 있으므로 상세한 설명을 생략한다.Since such a blade manufacturing method has been widely known in the related art, a detailed description is omitted.
도 6은 도 4의 작동 상태를 도시한 도면이다.FIG. 6 is a view showing an operating state of FIG. 4.
줄자의 하우징에서 블레이드(100)가 길게 인출되면 블레이드(100) 자체의 하중에 의하여 도 6과 같이 꺽임 유도용 홈부(101)를 기준으로 블레이드(100)가 폭방향으로 꺽이게 되며 이에 의하여 블레이드(100)는, 원래의 형태를 유지하면서 제1곡률반경(R1)을 가진 폭방향 중앙의 제1만곡부(110)와, 제1만곡보(110)의 폭방향 양측에서 꺽임 유도용 홈부(101)에 의하여 폭방향으로 꺽인 제2만곡부(120)를 가지게 된다.When the blade 100 is pulled out from the housing of the tape measure, the blade 100 is bent in the width direction based on the groove 101 for bending induction as shown in FIG. 6 by the load of the blade 100 itself, thereby causing the blade ( 100), while maintaining the original shape, the first curved portion 110 in the width direction with the first radius of curvature (R1), and the groove portion 101 for bending in both directions in the width direction of the first curved beam 110 By having the second curved portion 120 bent in the width direction.
이와 같이 본 블레이드(100)는 블레이드의 자중으로 인하여 폭방향으로 꺽인 구조를 가지게 되며, 이와 같이 폭방향으로 꺽인 구조는 블레이드가 길이방향으로 꺽이는 것에 대하여 강한 저항력을 발휘하며, 이로 인하여 종래의 블레이드에 비하여 보다 긴 직립 가능 길이를 가지게 된다.As described above, the blade 100 has a structure bent in the width direction due to the weight of the blade, and the structure bent in the width direction exerts a strong resistance to the blade being bent in the longitudinal direction, and thus, the conventional blade 100 In comparison, it has a longer upright length.
도 7은 도 4의 변형된 형태이며, 도 8은 도 7의 작동 상태를 도시한 도면이다.FIG. 7 is a modified form of FIG. 4, and FIG. 8 is a view showing an operating state of FIG. 7.
도 7에서는 블레이드(100)의 폭방향 양측에 각각 2개씩의 꺽임 유도용 홈부(101, 102)가 형성된다.In FIG. 7, two bending guide grooves 101 and 102 are formed on both sides of the blade 100 in the width direction.
따라서 도 7은 꺽임 유도용 홈부(101)가 꺽이면서 도 8과 같이 3개의 만곡부(110, 120, 130)를 가질 수 있다.Therefore, FIG. 7 may have three curved portions 110, 120, and 130 as shown in FIG. 8, while the bending induction groove 101 is bent.
즉 블레이드(100)는 원래의 형태를 유지하면서 제1곡률반경(R1)을 가진 폭방향 중앙의 제1만곡부(110)와, 제1만곡부(110)의 폭방향 양측에서 꺽임 유도용 홈부(101)에 의하여 폭방향으로 꺽인 제2만곡부(120)와, 제2만곡부(120)의 폭방향 양측에서 꺽임 유도용 홈부(102)에 의하여 폭방향으로 꺽인 제3만곡부(130)를 가지게 된다.That is, while maintaining the original shape of the blade 100, the first curved portion 110 in the width direction center having the first radius of curvature R1 and the groove portion 101 for inducing bending at both sides in the width direction of the first curved portion 110 ), the second curved portion 120 bent in the width direction and the third curved portion 130 bent in the width direction by the groove portion 102 for bending in both directions in the width direction of the second curved portion 120.
상기와 같이 블레이드(100)에 형성되는 꺽임 유도용 홈부의 개수는 다양하게 변경될 수 있다.As described above, the number of groove portions for bending induction formed in the blade 100 may be variously changed.
즉 꺽임 유도용 홈부는 오직 1개가 마련될 수도 있으며, 혹은 6개, 8개 등이 마련될 수도 있다.That is, only one groove portion for bending induction may be provided, or six or eight grooves may be provided.
도 9는 본 발명의 제2실시예에 의한 블레이드의 횡단면도이며, 도 10은 도 9의 작동 상태를 도시한 도면이다.9 is a cross-sectional view of a blade according to a second embodiment of the present invention, and FIG. 10 is a view showing an operating state of FIG. 9.
본 실시예에서 블레이드(200)는, 하부를 향하여 볼록한 형태로 제1곡률반경(R1)을 가진 폭방향 중앙의 제1곡률부(210)와, 하부를 향하여 볼록한 형태로 제1곡률반경(R1)보다 긴 제2곡률반경(R2)을 가지면서 제1곡률부(210)의 폭방향 양측에 형성된 제2곡률부(220)로 이루어진다.In this embodiment, the blade 200 has a first curvature portion 210 in the width direction center having a first curvature radius R1 in a convex shape toward the lower portion, and a first curvature radius R1 in a convex shape toward the lower portion. ) While having a second curvature radius R2 longer than that of the second curvature portion 220 formed on both sides in the width direction of the first curvature portion 210.
아울러 꺽임 유도용 홈부(201)는 제1곡률부(210)와 제2곡률부(220)의 경계를 따라 형성된다.In addition, the bending guide groove 201 is formed along the boundary between the first curvature portion 210 and the second curvature portion 220.
이와 같은 본 실시예는 블레이드(200)가 인출되면 도 10과 같이 블레이드(200)의 자중으로 인하여 꺽임 유도용 홈부(201)에서 제2곡률부(220)가 제1곡률부(210)에 대하여 폭방향으로 꺽이게 되며, 이와 같이 폭방향으로 꺽인 구조는 블레이드가 길이방향으로 꺽이는 것에 대하여 강한 저항력을 발휘하며, 이로 인하여 종래의 블레이드에 비하여 보다 긴 직립 가능 길이를 가지게 된다.In the present exemplary embodiment, when the blade 200 is withdrawn, the second curvature portion 220 in the groove portion 201 for bending induction due to the weight of the blade 200, as shown in FIG. 10, with respect to the first curvature portion 210 It is bent in the width direction, and the structure bent in the width direction exerts a strong resistance to the blade being bent in the longitudinal direction, and thus has a longer upright length than the conventional blade.
도 11는 본 발명의 제3실시예에 의한 블레이드의 횡단면도이며, 도 12는 도 11의 작동 상태를 도시한 도면이다.11 is a cross-sectional view of a blade according to a third embodiment of the present invention, and FIG. 12 is a view showing an operating state of FIG. 11.
본 실시예에서 블레이드(300)는, 하부를 향하여 볼록한 형태로 제1곡률반경(R1)을 가진 폭방향 중앙의 제1곡률부(310)와, 하부를 향하여 볼록한 형태로 제1곡률반경(R1)보다 긴 제2곡률반경(R2)을 가지면서 제1곡률부(310)의 폭방향 양측에 형성된 제2곡률부(320)로 이루어진다.In this embodiment, the blade 300 has a first curvature portion 310 in the width direction center having a first curvature radius R1 in a convex shape toward the lower portion, and a first curvature radius R1 in a convex shape toward the lower portion. ) While having a second curvature radius R2 longer than that of the second curvature portion 320 formed on both sides in the width direction of the first curvature portion 310.
아울러 꺽임 유도용 홈부(301)은 제1곡률부(310)의 하면에 복수개 형성된다.In addition, a plurality of groove portions 301 for inducing bending are formed on the lower surface of the first curvature portion 310.
이와 같은 본 실시예는 블레이드(300)가 인출되면서 도 12와 같이 블레이드(200)의 자중으로 인하여 제1곡률부(310)가 복수의 꺽임 유도용 홈부(301)에서 폭방향으로 꺽이면서 제1곡률부(310)가 복수의 제1만곡부(311)로 변환되어 보다 긴 직립 가능 길이를 가지게 된다.In this embodiment, as the blade 300 is drawn out, the first curvature portion 310 is bent in the width direction in the plurality of bending induction grooves 301 due to the weight of the blade 200 as shown in FIG. 12. The curvature portion 310 is converted into a plurality of first curved portions 311 to have a longer upright length.
도 12의 구조는 블레이드의 자중에 의하여 발생할 수도 있지만, 도 12의 구조는 블레이드가 보빈에 감기면서 외력에 의하여 발생할 수도 있다.The structure of FIG. 12 may occur due to the weight of the blade, but the structure of FIG. 12 may occur due to external force while the blade is wound around the bobbin.
즉 블레이드(300)가 보빈에 감길 때 외력에 의하여 블레이드(300)는 도 12와 같이 비교적 평탄한 구조로 변환될 수 있다. 따라서 블레이드(300)가 감기는 보빈 및 하우징 등이 비교적 소형화될 수 있다.That is, when the blade 300 is wound on the bobbin, the blade 300 may be converted into a relatively flat structure as shown in FIG. 12 by external force. Therefore, the bobbin and the housing around which the blade 300 is wound can be relatively small.
도 13은 본 발명의 제4실시예에 의한 블레이드의 횡단면도이다.13 is a cross-sectional view of a blade according to a fourth embodiment of the present invention.
본 실시예에서 블레이드(400)는, 하부를 향하여 볼록한 형태로 제1곡률반경(R1)을 가진 폭방향 중앙의 제1곡률부(410)와, 하부를 향하여 볼록한 형태로 제1곡률반경(R1)보다 긴 제2곡률반경(R2)을 가지면서 제1곡률부(410)의 폭방향 양측에 형성된 제2곡률부(420)로 이루어진다.In this embodiment, the blade 400 has a first curvature portion 410 in the width direction center having a first curvature radius R1 in a convex shape toward the lower portion, and a first curvature radius R1 in a convex shape toward the lower portion. ) While having a second radius of curvature R2 longer than that of the second curvature 420 formed on both sides of the first curvature portion 410 in the width direction.
제1곡률부(410)의 하면에 복수의 꺽임 유도용 홈부(401)가 형성된다.A plurality of bending guide grooves 401 are formed on the lower surface of the first curvature portion 410.
또한 제1곡률부(210)와 제2곡률부(220)의 경계를 따라 꺽임 유도용 홈부(402)가 형성된다.In addition, along the boundary between the first curvature portion 210 and the second curvature portion 220, a groove portion 402 for inducing bending is formed.
즉 제4실시예는 제2실시예와 제3실시예를 복합한 형태이다. That is, the fourth embodiment is a combination of the second and third embodiments.
한편 상기 실시예들은 꺽임 유도용 홈부가 블레이드의 길이방향 전체에 걸쳐 형성되는 것으로 한다.On the other hand, in the above embodiments, it is assumed that the groove for bending induction is formed over the entire length of the blade.
그러나 실시예에 따라서는 꺽임 유도용 홈부는 블레이드의 길이방향 일부에만 형성될 수도 있다. 그러나 이 경우에도 꺽임 유도용 홈부의 길이는 적어도 2m 이상 연속되는 것이 바람직하며, 더욱 바람직하기로는 꺽임 유도용 홈부의 길이는 2m 이상 4m 이하일 수 있다.However, depending on the embodiment, the groove for bending may be formed only in a part of the blade in the longitudinal direction. However, even in this case, the length of the groove portion for bending induction is preferably continuous at least 2 m or more, and more preferably, the length of the groove portion for bending induction may be 2 m or more and 4 m or less.
가령 5m 길이의 줄자에 있어서, 하우징 외부로 인출되는 블레이드의 일단부터 대략 3m~4m 정도로 꺽임 유도용 홈부를 형성하는 것으로 꺽임 유도용 홈부보다 다소 작은 길이의 직립 가능 길이를 구현할 수도 있다.For example, in a tape measure having a length of 5 m, an upright length of a slightly smaller length than a groove for bending induction may be realized by forming a groove for bending induction from about one to 3 m to 4 m from one end of a blade drawn out of the housing.
도 14는 본 발명의 제5실시예에 의한 블레이드의 부분 사시도이며, 도 15 및 도 16은 도 14의 작동 상태를 도시한 블레이드의 횡단면도이다.14 is a partial perspective view of a blade according to a fifth embodiment of the present invention, and FIGS. 15 and 16 are cross-sectional views of the blade showing the operating state of FIG. 14.
본 실시예에서 블레이드(500)는, 상부를 향하여 볼록한 형태로 제1곡률반경(R1)을 가진 폭방향 중앙의 제1곡률부(210)와, 하부를 향하여 볼록한 형태로 제2곡률반경(R2)을 가지면서 제1곡률부(210)의 폭방향 양측에 형성된 제2곡률부(220)로 이루어진다.In this embodiment, the blade 500 has a first curvature portion 210 in the width direction center having a first curvature radius R1 in a convex shape toward the upper portion, and a second curvature radius R2 in a convex shape toward the lower portion. ), the second curvature portion 220 formed on both sides in the width direction of the first curvature portion 210.
아울러 꺽임 유도용 홈부(501)은 제1곡률부(510)의 하면에 복수개 형성된다.In addition, a plurality of bending induction grooves 501 are formed on the lower surface of the first curvature portion 510.
본 실시예의 꺽임 유도용 홈부(501)는 사각 단면 형태로 형성되며, 제1실시예 내지 제3실시예에서 꺽임 유도용 홈부는 삼각 단면 형태로 형성되는 것으로 도시하였다. 이와 같이 꺽임 유도용 홈부의 형태는 다양하게 변형될 수 있다. Bending induction groove 501 of this embodiment is formed in a rectangular cross-sectional shape, and in the first to third embodiments, it is illustrated that the groove for bending induction is formed in a triangular cross-sectional shape. In this way, the shape of the groove portion for bending induction can be variously modified.
이와 같은 본 실시예는 블레이드(500)가 인출되면서 도 15와 같이 블레이드(500)의 자중으로 인하여 제1곡률부(510)가 복수의 꺽임 유도용 홈부(501)에서 폭방향으로 꺽이면서 보다 긴 직립 가능 길이를 가지게 된다.In this embodiment, as the blade 500 is drawn out, the first curvature portion 510 is bent in the width direction in the plurality of bending induction grooves 501 due to the weight of the blade 500 as shown in FIG. It will have an upright length.
즉 블레이드(500)가 인출되면 블레이드(500)의 자중으로 인하여 제1곡률부(510)가 오므라드는 형태로 변형되면서 보다 긴 직립 가능 길이를 가지게 된다.That is, when the blade 500 is withdrawn, the first curvature portion 510 is deformed into an oval shape due to the weight of the blade 500, and thus has a longer erect length.
또한 블레이드(500)가 보빈에 감길 때 외력에 의하여 블레이드(500)는 도 16와 같이 비교적 평탄한 구조로 쉽게 변환될 수 있다. 따라서 블레이드(500)가 감기는 보빈 및 하우징 등이 비교적 소형화될 수 있다.In addition, when the blade 500 is wound on the bobbin, the blade 500 can be easily converted into a relatively flat structure as shown in FIG. 16 by external force. Therefore, the bobbin and the housing in which the blade 500 is wound can be relatively small.
특히 본 실시예의 제1곡률부(510)는 상부를 향하여 볼록한 형태이므로, 꺽임 유도용 홈부(501)가 없다면 보빈에 감기기 어려운 형태이다.이러한 문제를 꺽임 유도용 홈부(501)가 해결하게 된다.Particularly, since the first curvature portion 510 of the present embodiment is convex toward the upper portion, it is difficult to wind the bobbin without the groove portion 501 for induction bending. The groove portion 501 for induction bending is solved.
도 17은 도 14의 변형된 형태를 보이는 블레이드의 횡단면도이다.17 is a cross-sectional view of the blade showing the modified form of FIG. 14.
본 실시예에서는 블레이드(500)의 상면에 투명필름(630)이 접착된 형태를 보이고 있다.In this embodiment, the transparent film 630 is attached to the top surface of the blade 500.
투명필름(630)은, 꺽임 유도용 홈부(501)가 형성된 블레이드(500)의 장기간 사용시 꺽임 유도용 홈부(501)가 형성된 부위의 얇은 두께로 인하여 블레이드(500)가 파손되는 것을 예방할 수 있다.The transparent film 630 can prevent the blade 500 from being damaged due to the thin thickness of the portion where the groove 500 for bending induction is formed when the blade 500 having the groove 50 for induction bending is used for a long time.
투명필름(630)은 본 실시예 뿐만 아니라 다른 실시예에도 적용될 수 있다.The transparent film 630 may be applied to other embodiments as well as this embodiment.
도 18은 본 발명의 제6실시예에 의한 블레이드의 횡단면도이며, 도 19는 도 18의 저면도이다. 18 is a cross-sectional view of a blade according to a sixth embodiment of the present invention, and FIG. 19 is a bottom view of FIG. 18.
본 실시예에서 블레이드(600)는, 평면 형태를 가진 폭방향 중앙의 중앙 평탄부(610)와, 하부를 향하여 볼록한 형태로 제2곡률반경(R2)을 가지면서 중앙 평탄부(610)의 폭방향 양측에 형성된 가장자리 곡률부(620)로 이루어진다.In this embodiment, the blade 600 has a central flat portion 610 in the center of the width direction having a flat shape and a second curvature radius R2 in a convex shape toward the lower portion, while the width of the central flat portion 610 It consists of an edge curvature portion 620 formed on both sides of the direction.
아울러 꺽임 유도용 홈부(601)은 중앙 평탄부(610)의 하면에 복수개 형성된다.In addition, a plurality of groove portions 601 for inducing bending are formed on the lower surface of the central flat portion 610.
이와 같은 본 실시예의 작동은, 실질적으로 제5실시예의 작동과 동일하다고 볼 수 있다.It can be considered that the operation of this embodiment is substantially the same as the operation of the fifth embodiment.
한편 꺽임 유도용 홈부(601)는 블레이드(600)의 길이방향 전체에 연속적으로 형성될 수도 있지만, 도 19에 도시된 바와 같이 꺽임 유도용 홈부(601)는 블레이드(600)의 길이방향을 따라 서로 이격되면서 복수개 형성될 수 있다.On the other hand, although the groove portion 601 for inducing bending may be continuously formed in the entire longitudinal direction of the blade 600, as shown in FIG. 19, the groove portion 601 for induction bending is mutually along the longitudinal direction of the blade 600. A plurality of spaced apart can be formed.
즉 블레이드(600)에는 길이 방향을 따라 꺽임 유도용 홈부(601)가 형성된 부위(L1)와 길이 방향을 따라 꺽임 유도용 홈부(601)가 형성되지 않은 부위(L2)가 공존할 뿐만 아니라, L1 구간과 L2 구간이 수회 또는 수십회 반복되는 형태가 된다.That is, in the blade 600, the portion L1 in which the groove portion 601 for bending induction along the longitudinal direction is formed and the portion L2 in which the groove portion 601 for bending induction along the longitudinal direction are not formed coexist, as well as L1. The section and the L2 section are repeated several times or dozens of times.
이와 같이 꺽임 유도용 홈부(601)를 형성하는 경우에도 실질적으로 본 발명이 의도하는 효과를 어느 정도 달성할 수 있다.In this way, even when forming the groove portion 601 for induction, it is possible to substantially achieve the desired effect of the present invention.
그럼에도 불구하고, 본 발명이 의도하는 효과를 효과적으로 달성하기 위하여는, 꺽임 유도용 홈부(601)가 형성된 블레이드(600)의 전체 길이(즉 L1 구간의 합계 길이)는 꺽임 유도용 홈부(601)가 형성되지 않은 블레이드(600)의 전체 길이(즉 L2 구간의 합계 길이)보다 긴 것이 바람직하다.Nevertheless, in order to effectively achieve the intended effect of the present invention, the entire length of the blade 600 on which the bent induction groove 601 is formed (that is, the total length of the L1 section) is the bent induction groove 601. It is preferable that it is longer than the entire length of the blade 600 that is not formed (that is, the total length of the L2 section).
도 20는 본 발명의 제7실시예에 의한 블레이드의 횡단면도이다.20 is a cross-sectional view of a blade according to a seventh embodiment of the present invention.
본 실시예에서 블레이드(700)는, 하부를 향하여 볼록한 형태로 제1곡률반경(R1)을 가진 폭방향 중앙의 제1곡률부(710)와, 하부를 향하여 볼록한 형태로 제1곡률반경(R1)보다 긴 제2곡률반경(R2)을 가지면서 제1곡률부(710)의 폭방향 양측에 형성된 제2곡률부(720)로 이루어진다.In this embodiment, the blade 700 includes a first curvature portion 710 in the width direction center having a first curvature radius R1 in a convex shape toward the lower portion, and a first curvature radius R1 in a convex shape toward the lower portion. ) While having a second curvature radius R2 longer than that of the second curvature portion 720 formed on both sides in the width direction of the first curvature portion 710.
한편 제1곡률부(710)의 두께(t1)는 제2곡률부(720)의 두께(t2)보다 얇다.Meanwhile, the thickness t1 of the first curvature portion 710 is thinner than the thickness t2 of the second curvature portion 720.
이와 같은 구조는 제1곡률부(710)와 제2곡률부(720)의 구조에 의하여 보다 긴 직립 가능 길이를 가지도록 하고, 보다 얇은 두께(t1)를 가진 제1곡률부(710)는 블레이드(700)가 보빈에 감길 때 외력에 의하여 비교적 평탄한 구조로 쉽게 변환될 수 있다. Such a structure has a longer erectable length by the structures of the first curvature portion 710 and the second curvature portion 720, and the first curvature portion 710 having a thinner thickness t1 has a blade When the 700 is wound on the bobbin, it can be easily converted into a relatively flat structure by external force.
따라서 블레이드(700)는 보다 긴 직립 가능 길이를 가지면서, 감기는 보빈 및 하우징 등이 비교적 소형화될 수 있다.Therefore, the blade 700 has a longer upright length, and the bobbin and the housing to be wound can be relatively small.
도 21은 본 발명의 제8실시예에 의한 블레이드의 횡단면도이다.21 is a cross-sectional view of a blade according to an eighth embodiment of the present invention.
본 실시예에서 블레이드(800)는, 상부를 향하여 볼록한 형태로 제1곡률반경(R1)을 가진 폭방향 중앙의 제1곡률부(810)와, 하부를 향하여 볼록한 형태로 제2곡률반경(R2)을 가지면서 제1곡률부(810)의 폭방향 양측에 형성된 제2곡률부(820)로 이루어진다.In this embodiment, the blade 800 has a first curvature portion 810 in the width direction center having a first curvature radius R1 in a convex shape toward the upper portion, and a second curvature radius R2 in a convex shape toward the lower portion. ), the second curvature portion 820 formed on both sides in the width direction of the first curvature portion 810.
한편 제1곡률부(810)의 두께(t1)는 제2곡률부(820)의 두께(t2)보다 얇다.Meanwhile, the thickness t1 of the first curvature portion 810 is thinner than the thickness t2 of the second curvature portion 820.
이와 같은 구조는 제1곡률부(810)와 제2곡률부(820)의 구조에 의하여 보다 긴 직립 가능 길이를 가지도록 하고, 보다 얇은 두께(t1)를 가진 제1곡률부(810)는 블레이드(800)가 보빈에 감길 때 외력에 의하여 비교적 평탄한 구조로 쉽게 변환될 수 있다. Such a structure has a longer erectable length by the structures of the first curvature portion 810 and the second curvature portion 820, and the first curvature portion 810 having a thinner thickness t1 is a blade When the 800 is wound on the bobbin, it can be easily converted into a relatively flat structure by external force.
따라서 블레이드(800)는 보다 긴 직립 가능 길이를 가지면서, 감기는 보빈 및 하우징 등이 비교적 소형화될 수 있다.Therefore, the blade 800 has a longer upright length, and the bobbin and the housing to be wound can be relatively small.
도 22는 본 발명의 제9실시예에 의한 블레이드의 횡단면도이다.22 is a cross-sectional view of a blade according to a ninth embodiment of the present invention.
본 실시예에서 블레이드(900)는, 평면 형태를 가진 폭방향 중앙의 중앙 평탄부(910)와, 하부를 향하여 볼록한 형태로 제2곡률반경(R2)을 가지면서 중앙 평탄부(910)의 폭방향 양측에 형성된 가장자리 곡률부(920)로 이루어진다.In this embodiment, the blade 900 has a central flat portion 910 in the center of the width direction having a flat shape, and a width of the central flat portion 910 while having a second radius of curvature R2 in a convex shape toward the lower portion. It consists of an edge curvature portion 920 formed on both sides of the direction.
한편 중앙 평탄부(910)의 두께(t1)는 가장자리 곡률부(920)의 두께(t2)보다 얇다.Meanwhile, the thickness t1 of the central flat portion 910 is thinner than the thickness t2 of the edge curvature portion 920.
이와 같은 본 실시예의 작동은, 실질적으로 제8실시예의 작동과 동일하다고 볼 수 있다.The operation of this embodiment can be regarded as substantially the same as the operation of the eighth embodiment.
전술한 본 발명의 설명은 예시를 위한 것이며, 본 발명이 속하는 기술분야의 통상의 지식을 가진 자는 본 발명의 기술적 사상이나 필수적인 특징을 변경하지 않고서 다른 구체적인 형태로 쉽게 변형이 가능하다는 것을 이해할 수 있을 것이다. 그러므로 이상에서 기술한 실시예들은 모든 면에서 예시적인 것일 뿐 한정적이 아닌 것으로 이해되어야만 한다. 예를 들어, 단일형으로 설명되어 있는 각 구성 요소는 분산되어 실시될 수도 있으며, 마찬가지로 분산된 것으로 설명되어 있는 구성 요소들도 결합된 형태로 실시될 수 있다.The above description of the present invention is for illustration only, and those skilled in the art to which the present invention pertains can understand that the present invention can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the above-described embodiments are merely illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.
본 발명의 범위는 상기 상세한 설명보다는 후술하는 특허청구범위에 의하여 나타내어지며, 특허청구범위의 의미 및 범위 그리고 그 균등 개념으로부터 도출되는 모든 변경 또는 변형된 형태가 본 발명의 범위에 포함되는 것으로 해석되어야 한다.The scope of the present invention is indicated by the following claims rather than the above detailed description, and it should be interpreted that all changes or modified forms derived from the meaning and scope of the claims and equivalent concepts thereof are included in the scope of the present invention. do.
본 발명은, 줄자의 블레이드로 이용될 수 있다.The present invention can be used as a tape measure blade.

Claims (13)

  1. 길이방향으로 길게 연장되는 띠 형태의 줄자용 블레이드에 있어서, In the blade for the tape measure in the form of a strip extending in the longitudinal direction,
    상기 블레이드의 상면 또는 하면에 상기 블레이드의 길이방향을 따라 연장되는 꺽임 유도용 홈부가 형성되는 것을 특징으로 하는 줄자용 블레이드.A tape measure blade, characterized in that a groove portion for bending induction extending along the longitudinal direction of the blade is formed on the upper or lower surface of the blade.
  2. 제 1 항에 있어서, According to claim 1,
    상기 꺽임 유도용 홈부는 상기 블레이드의 폭방향 일측 및 폭방향 타측에 대칭적으로 형성되는 것을 특징으로 하는 줄자용 블레이드.The bending guide groove is a tape measure blade, characterized in that formed symmetrically on the other side of the width direction and the other side of the blade.
  3. 제 1 항에 있어서, According to claim 1,
    상기 블레이드는 하부를 향하여 볼록한 형태로 제1곡률반경을 가진 폭방향 중앙의 제1곡률부와 하부를 향하여 볼록한 형태로 상기 제1곡률반경보다 긴 제2곡률반경을 가지면서 상기 제1곡률부의 폭방향 양측에 형성된 제2곡률부를 포함하여 이루어지며, 상기 꺽임 유도용 홈부는 상기 제1곡률부와 상기 제2곡률부의 경계를 따라 형성되는 것을 특징으로 하는 줄자용 블레이드.The blade has a first curvature portion in a width direction center having a first curvature radius in a convex shape toward the lower portion and a second curvature radius longer than the first curvature radius in a convex shape toward the lower portion while having a width of the first curvature portion It comprises a second curvature portion formed on both sides of the direction, the bending guide groove portion is taped blade, characterized in that formed along the boundary of the first and second curvature portion.
  4. 제 1 항에 있어서, According to claim 1,
    상기 블레이드는 하부를 향하여 볼록한 형태로 제1곡률반경을 가진 폭방향 중앙의 제1곡률부와 하부를 향하여 볼록한 형태로 상기 제1곡률반경보다 긴 제2곡률반경을 가지면서 상기 제1곡률부의 폭방향 양측에 형성된 제2곡률부를 포함하여 이루어지며, 상기 꺽임 유도용 홈부는 상기 제1곡률부에 형성되는 것을 특징으로 하는 줄자용 블레이드.The blade has a first curvature portion in a width direction center having a first curvature radius in a convex shape toward the lower portion and a second curvature radius longer than the first curvature radius in a convex shape toward the lower portion while having a width of the first curvature portion It is made to include a second curvature portion formed on both sides of the direction, the bending guide groove portion for the tape measure, characterized in that formed in the first curvature portion.
  5. 제 1 항에 있어서, According to claim 1,
    상기 블레이드는 상부를 향하여 볼록한 형태로 제1곡률반경을 가진 폭방향 중앙의 제1곡률부와 하부를 향하여 볼록한 형태로 제2곡률반경을 가지면서 상기 제1곡률부의 폭방향 양측에 형성된 제2곡률부를 포함하여 이루어지며, 상기 꺽임 유도용 홈부는 상기 제1곡률부에 형성되는 것을 특징으로 하는 줄자용 블레이드.The blade has a first curvature portion in a width direction center having a first curvature radius in a convex shape toward the top and a second curvature radius in a convex shape toward the lower portion, and a second curvature formed on both sides in the width direction of the first curvature portion A tape measure blade comprising a portion, wherein the groove for bending is formed in the first curvature portion.
  6. 제 1 항에 있어서, According to claim 1,
    상기 블레이드는 평면 형태를 가진 폭방향 중앙의 중앙 평탄부와 하부를 향하여 볼록한 형태로 상기 중앙 평탄부의 양측에 형성된 가장자리 곡률부를 포함하여 이루어지며, 상기 꺽임 유도용 홈부는 상기 중앙 평탄부에 형성되는 것을 특징으로 하는 줄자용 블레이드.The blade comprises a central flat portion in the center of the width direction having a flat shape and an edge curvature formed on both sides of the central flat portion in a convex shape toward the lower portion, wherein the bending induction groove portion is formed in the central flat portion. Features a tape measure blade.
  7. 제 1 항에 있어서, According to claim 1,
    상기 꺽임 유도용 홈부는 상기 블레이드의 길이방향 전체 또는 길이방향 일부에 형성되는 것을 특징으로 하는 줄자용 블레이드.The bending guide groove is a tape measure blade, characterized in that formed in the entire longitudinal direction or a part of the longitudinal direction of the blade.
  8. 제 7 항에 있어서, The method of claim 7,
    상기 꺽임 유도용 홈부의 길이는 적어도 2m 이상 연속되는 것을 특징으로 하는 줄자용 블레이드.The length of the groove for bending the tape measure, characterized in that the continuous tapered at least 2m or more.
  9. 제 7 항에 있어서, The method of claim 7,
    상기 꺽임 유도용 홈부는 상기 블레이드의 길이방향을 따라 서로 이격되면서 복수개 형성되며, 상기 꺽임 유도용 홈부가 형성된 블레이드의 전체 길이는 상기 꺽임 유도용 홈부가 형성되지 않은 블레이드의 전체 길이보다 긴 것을 특징으로 하는 줄자용 블레이드.The plurality of grooves for bending induction are formed while being spaced apart from each other along the longitudinal direction of the blade, and the total length of the blades formed with the grooves for bending induction is longer than the total length of the blades in which the grooves for bending are not formed. Blade for tape measure.
  10. 제 1 항에 있어서, According to claim 1,
    상기 블레이드의 상면에 투명필름이 접착된 것을 특징으로 하는 줄자용 블레이드.Tape for a tape measure, characterized in that a transparent film is attached to the upper surface of the blade.
  11. 길이방향으로 길게 연장되는 띠 형태의 줄자용 블레이드에 있어서, In the blade for the tape measure in the form of a strip extending in the longitudinal direction,
    상기 블레이드는 하부를 향하여 볼록한 형태로 제1곡률반경을 가진 폭방향 중앙의 제1곡률부와 하부를 향하여 볼록한 형태로 상기 제1곡률반경보다 긴 제2곡률반경을 가지면서 상기 제1곡률부의 폭방향 양측에 형성된 제2곡률부를 포함하여 이루어지며, 상기 제1곡률부의 두께는 상기 제2곡률부의 두께보다 얇은 것을 특징으로 하는 줄자용 블레이드.The blade has a first curvature portion in a width direction center having a first curvature radius in a convex shape toward the lower portion and a second curvature radius longer than the first curvature radius in a convex shape toward the lower portion while having a width of the first curvature portion It comprises a second curvature portion formed on both sides of the direction, the thickness of the first curvature portion is a tape measure blade, characterized in that thinner than the thickness of the second curvature portion.
  12. 길이방향으로 길게 연장되는 띠 형태의 줄자용 블레이드에 있어서, In the blade for the tape measure in the form of a strip extending in the longitudinal direction,
    상기 블레이드는 상부를 향하여 볼록한 형태로 제1곡률반경을 가진 폭방향 중앙의 제1곡률부와 하부를 향하여 볼록한 형태로 제2곡률반경을 가지면서 상기 제1곡률부의 폭방향 양측에 형성된 제2곡률부를 포함하여 이루어지며, 상기 제1곡률부의 두께는 상기 제2곡률부의 두께보다 얇은 것을 특징으로 하는 줄자용 블레이드.The blade has a first curvature portion in a width direction center having a first curvature radius in a convex shape toward the top and a second curvature radius in a convex shape toward the lower portion, and a second curvature formed on both sides in the width direction of the first curvature portion A tape measure blade comprising a portion, wherein the thickness of the first curvature portion is thinner than the thickness of the second curvature portion.
  13. 길이방향으로 길게 연장되는 띠 형태의 줄자용 블레이드에 있어서, In the blade for the tape measure in the form of a strip extending in the longitudinal direction,
    상기 블레이드는 평면 형태를 가진 폭방향 중앙의 중앙 평탄부와 하부를 향하여 볼록한 형태로 상기 중앙 평탄부의 양측에 형성된 가장자리 곡률부를 포함하여 이루어지며, 상기 중앙 평탄부의 두께는 상기 가장자리 곡률부의 두께보다 얇은 것을 특징으로 하는 줄자용 블레이드.The blade comprises a central flat portion in the widthwise center having a flat shape and an edge curvature formed on both sides of the central flat portion in a convex shape toward the lower portion, wherein the thickness of the central flat portion is thinner than the thickness of the edge curvature portion. Features a tape measure blade.
PCT/KR2020/000708 2019-01-30 2020-01-15 Blade for tape measure WO2020159114A1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR20190012935 2019-01-30
KR10-2019-0012935 2019-01-30
KR1020190030087A KR102122871B1 (en) 2019-03-14 2019-03-14 A tape measure blade having a curvature converting portion
KR10-2019-0030087 2019-03-14
KR10-2019-0128965 2019-10-17
KR1020190128965A KR20200094615A (en) 2019-01-30 2019-10-17 Blade for tape measure

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WO2020159114A1 true WO2020159114A1 (en) 2020-08-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115008181A (en) * 2022-05-31 2022-09-06 慈溪沃胜自动化设备厂 Level bar assembly quality

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6324769B1 (en) * 1999-08-04 2001-12-04 The Stanley Works Rule assembly with increased blade standout
KR200275789Y1 (en) * 2002-01-26 2002-05-17 유권종 Tape measure
JP2008268142A (en) * 2007-04-25 2008-11-06 Hara Doki Kk Measuring tape for measure
KR20090007068A (en) * 2007-07-13 2009-01-16 최용종 A tape measure
JP2014106193A (en) * 2012-11-29 2014-06-09 Muratec-Kds Corp Tape measure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6324769B1 (en) * 1999-08-04 2001-12-04 The Stanley Works Rule assembly with increased blade standout
KR200275789Y1 (en) * 2002-01-26 2002-05-17 유권종 Tape measure
JP2008268142A (en) * 2007-04-25 2008-11-06 Hara Doki Kk Measuring tape for measure
KR20090007068A (en) * 2007-07-13 2009-01-16 최용종 A tape measure
JP2014106193A (en) * 2012-11-29 2014-06-09 Muratec-Kds Corp Tape measure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115008181A (en) * 2022-05-31 2022-09-06 慈溪沃胜自动化设备厂 Level bar assembly quality
CN115008181B (en) * 2022-05-31 2024-02-23 慈溪沃胜自动化设备厂 Level bar assembly quality

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