WO2022250198A1

WO2022250198A1 - Length measurement device

Info

Publication number: WO2022250198A1
Application number: PCT/KR2021/008264
Authority: WO
Inventors: 박수홍; 손민기
Original assignee: 주식회사 베이글랩스
Priority date: 2021-05-27
Filing date: 2021-06-30
Publication date: 2022-12-01
Also published as: KR20220160367A

Abstract

The present invention comprises: a case comprising a front part, a rear part, and a lateral part; a first curved part (120-1) formed on the lateral part; a tape-withdrawing face (120-3) which is formed at one end of the first curved part, and through which tape inside the case is withdrawn; a tape tip (150) which is attached to the end of the tape and which is disposed to be in contact with the tape-withdrawing face; and a hanging part (120-5), which is provided at the first curved part (120-1) and fixes the tape tip during length measurement, wherein the tape tip comprises: a first tip part (152) having a curved part (152a); and a second tip part (154) having a hook (154a) provided at the front of the first tip part so as to be hooked on the hanging part (120-5), and the curved part (152a) of the first tip part comes in contact with a curved part of an object to be measured, in a state in which the hook (154a) is hooked on the hanging part (120-5).

Description

length measuring device

The present invention relates to a length measuring device, and more particularly, to a length measuring device with increased accuracy of measuring the length of a curved part.

In general, a tape measure is made in the form of a tape and has a scale indicating length on its surface, so it is used to measure the width or area of a certain space or to measure the size, length or width of an object to be measured. There are many types of tape measure, but a typical tape measure includes a case composed of a ruler wound in a coil form and marked with graduations on the surface, an internal space for storing the ruler, and an entrance that guides the entry and withdrawal of the ruler stored in the internal space. The length of the measurement object could be measured by the user pulling the ruler marked with the scale for a long time and reading the scale reaching the end of the measurement object with respect to the tip of the ruler and the marked part near the body.

In addition, an electronic length measurement device that electronically measures the length of a line drawn and displays a value instead of directly reading the scale marked on the tape measure has recently been developed. The measurement of the draw length in the electronic length measuring device detects the number of revolutions of the bobbin on which the electrons are wound, and calculates the draw length through this.

However, since the conventional length measuring device has a structure for measuring the length of a straight line part, there is a problem in that the accuracy of the measurement is lowered when measuring the length of a curved section equal to the length of an arc.

In addition, in the process of using the length measuring device, the tape inside the case continues to be repeatedly pulled out and pulled in, and both ends of the tape are easily damaged during the operation. The problems of the prior art will be explained through FIGS. 10 and 11 .

Figure 10 (a) is a state in which the tape 50 is pulled out through the tape take-out hole 30 in the length measuring device 10 according to the prior art, the tape 50 is the central portion of the tape take-out hole 30 It is a normal appearance that is drawn out as . FIG. 10(b) is an enlarged cross-sectional view of the tape take-out hole 30 in FIG. 10(a). 10 shows a normal operation in which both ends of the tape 50 are located at both edges of the tape take-out hole 30 .

Figure 11 (a) shows that the tape 50 is biased to one side and pulled out in an abnormal direction in the length measuring device according to the prior art, and both ends of the tape 50 receive a force biased to one side, and the tape is pulled out. It overlaps at the edge of the hole 30, and FIG. 11(b) shows a state in which one side end of the tape is overlapped in this way.

As described above, in the prior art, the side ends of the tape are overlapped or wrinkled in the process of being biased to one side during the tape withdrawal process, and this causes a problem in that both ends of the tape are easily damaged, resulting in a problem with the durability of the length measuring device. This problem exists due to the rectangular structure of the structure of the hole through which the tape is taken out of the device.

An object of the present invention is to improve the reliability of a measurement value by providing a structure capable of accurately measuring the length of a curved portion even when the measurement portion of a measurement object is curved.

In addition, an object of the present invention is to propose an improved structure of a case outlet that prevents damage to both ends of a tape that is repeatedly drawn out from a case of a length measuring device.

The present invention is a case consisting of a front part and a rear part and a side part; a first curved portion 120-1 formed on the side portion; a tape take-out surface (120-3) formed at one end of the first curved portion and through which the tape inside the case is drawn; a tape tip 150 attached to an end of the tape and placed in contact with the tape withdrawal surface; and a hook 120-5 provided on the first curved portion 120-1 and fixing the tape tip in a length measurement process, wherein the tape tip includes a first curved portion 152a. It is composed of a tip part 152 and a second tip part 154 having a hook 154a provided in front of the first tip part and hooked to the hook part 120-5, wherein the hook 154a is the hook part In the state caught by (120-5), the curved portion 152a of the first tip is for a length measuring device characterized in that it contacts the curved portion of the object to be measured.

When the tape tip 150 is viewed from the side, the second tip portion does not have the same continuous curvature as the first tip portion, and the second tip portion has a predetermined relationship with the first tip portion in a direction opposite to the direction in which the measurement object is located. The angle θ is made so that the measured value of the length of the curved member is accurate.

and a tape take-out hole 160 formed on the tape take-out surface through which the tape passes, wherein the tape take-out hole 160 has a round shape at both ends, so that both sides of the tape are drawn in and out repeatedly while the tape is drawn in and out repeatedly. Be sure to prevent damage to the ends.

The tape withdrawal hole 160 is composed of a central portion 161, which is a passage through which the tape is extracted, and edge portions 162 provided at both ends of the central portion, and the inner surface of the edge portion is generally curved.

a bobbin provided inside the case and around which the tape is wound; and a manipulation gear 180 provided on the second curved portion 120-2 and manipulating rotation of the bobbin inside the case.

The present invention is also a case consisting of a front part and a rear part and a side part; a tape take-out surface 120-3 formed on the side part and through which the tape inside the case is drawn; and a tape take-out hole 160 formed on the tape take-out surface through which the tape passes, wherein the tape take-out hole 160 has a central portion 161 having a width of a predetermined interval and both ends of the central portion. It consists of an edge portion 162 provided, and the inner surface of the edge portion forms a curved portion as a whole.

The width d2 of the edge portion is larger than the width d1 of the central portion, and the central portion 161 has a first surface 161a and a second surface facing the first surface at a predetermined interval. It is composed of a surface 161b, and the edge portion has a first curve starting point S1 at which the curved portion starts from the first surface 161a and a second curve starting point S2 at which the curved portion starts at the second surface 161b. It is a part connecting, and the first curve starting point (S1) is located inside the second curve starting point (S2).

When a direction from the central portion toward the first surface 161a is referred to as a first direction, and a direction from the central portion toward the second surface 161b is referred to as a second direction, the inner surface of the edge portion is the first direction. It is preferable to protrude in the first direction based on (161a), but not to protrude in the second direction based on the second surface (161b).

According to the present invention, an advantageous effect of improving the accuracy of the measured value occurs even when the measurement object is a curved portion by the above configuration, and the tape is repeatedly drawn in and out due to the round structure at both ends of the tape take-out hole. The effect of preventing both ends from being damaged is exhibited.

1 and 2 are schematic perspective views of a length measuring device according to the present invention,

3 to 4 are a plan view and a front view of a state in which the tape tip is removed from the length measuring device according to the present invention,

5 to 6 are some detailed views of the length measuring device according to the present invention,

7 is a use state diagram of the length measuring device according to the present invention.

8 and 9 are tape withdrawals from the length measuring device according to the present invention,

10 and 11 are the appearance of the tape drawn from the length measuring device according to the prior art.

Objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments taken in conjunction with the accompanying drawings. In addition, the terms used are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of the user operator. Therefore, definitions of these terms should be made based on the content throughout the present specification.

The length measuring device (or also referred to as an electronic length measuring device) of the present invention is to calculate the length of the measurement target by calculating the extent to which the tape is drawn through a tape measure (hereinafter referred to as 'tape') drawn out from the case 100. , Specifically, it is a tool that detects the amount of rotation of the rotating body around which the tape is wound, and then calculates the degree of withdrawal of the tape based on this amount of rotation to obtain the length of the measuring part.

Referring to FIGS. 1 and 2 , the length measuring device 100 according to the present invention includes a case, a tape drawn inside and outside the case to measure the length, and a tape tip coupled to the front end of the tape to draw the tape. Specifically, the case of the present invention consists of a front part 110, a rear part (not shown) opposite the front part, and a side part 120 connecting the front part and the rear part. In addition, the present invention is characterized in that the region from which the tape is drawn out from the side part is formed with two curved parts.

That is, the side part 120 has a first curved part 120-1 and a second curved part 120-2, and the tape 140 is drawn between the first curved part and the second curved part. and a tape extraction surface 120-3 provided with a hole to be formed. The hole through which the tape is taken out is called the tape take-out hole 160 and will be described in detail below.

A tape tip 150 is attached to the end of the tape to pull and withdraw the tape, and the tape tip is normally placed in contact with the tape withdrawal surface. A hook 120-5 for fixing the tape tip in the length measurement process is positioned on the first curved portion 120-1.

Looking at the structure of the tape tip 150, it is composed of a first tip portion 152 having a curved portion 152a and a second tip portion 154 having a ring 154a. The hook 154a of the second tip part is hooked and fixed to the hook part 120-5 of the first curved surface part in the process of measuring the length.

3 to 4 is a state in which the tape tip 150 is removed for convenience of description in the length measuring device.

The present invention is characterized by measuring a curved distance rather than measuring a linear distance. 7 shows a state in which the hook 154a of the tape tip is caught on the hook 120-5 in a state in which the tape is pulled out and wound around the object to be measured. In this case, the first It can be seen that the curved portion 152a of the tip portion 152 comes into contact with the curved portion of the object to be measured, and through this, the accuracy of measuring the length of the curved portion can be increased.

Looking at the structure of the tape tip 150 in detail with reference to FIGS. 5 and 6, when viewed from the side, the first tip portion 152 has a curved structure having a predetermined curvature, and the second tip portion 154 did not have the same continuous curvature as the first tip portion 152. That is, the second tip portion forms a predetermined angle θ with the first tip portion in a direction opposite to a direction in which the measurement object is located (a downward direction in FIG. 6 ). Through this structure, the curved part 152a of the first tip part 152 comes into contact with the curved part of the object to be measured in a state where the hook 154a of the second tip part is caught on the hook part 120-5. Therefore, the accuracy of the measured value of the length of the curved member is increased.

7 is a use state diagram for measuring the circumferential length of the measurement object (R) using the length measuring device according to the present invention. In a state in which the tape is pulled out and wound around the object to be measured, in a state in which the loop 154a of the tape tip 150 is caught on the hook 120-5, the curved portion 152a of the first tip portion 152 is Because it is in contact with the curved part of the object to be measured, the circumference of the curved part can be accurately measured.

Hereinafter, the structure of the tape take-out hole 160 of the present invention will be described in detail with reference to FIGS. 4, 8, and 9.

As shown in FIG. 4, the present invention newly derived the shape of the hole through which the tape passes in order to prevent both ends of the tape from being damaged while the tape is repeatedly drawn in and out of the case. The tape take-out surface 120-3 is provided with a tape take-out hole 160 through which the tape passes, and the tape take-out hole 160 has a round shape at both ends.

That is, the tape withdrawal hole 160 is composed of a central portion 161, which is a passage through which the tape is drawn in and out, and edge portions 162 provided at both ends of the central portion, and the inner surface of the edge portion is generally curved. achieve The width d2 of the edge portion is greater than the width d1 of the central portion, and the inner surface of the edge portion has a curved structure. Since the conventional tape take-out hole has a rectangular straight structure, both ends of the tape are often damaged while colliding with the edge straight section of the take-out hole, so this problem is solved by introducing a curved shape.

In more detail with reference to FIG. 4 , the width d2 of the edge portion is preferably formed larger than the width d1 of the central portion, and the central portion 161 includes the first surface 161a and the first surface. and a second surface 161b facing each other and forming a width of a predetermined interval. The edge portion is a portion connecting the first curve starting point S1 at which the curved portion starts on the first surface 161a and the second curve starting point S2 at which the curved portion starts on the second surface 161b. The first curve starting point (S1) is located inside the second curve starting point (S2).

When a direction from the central portion toward the first surface 161a is referred to as a first direction, and a direction from the central portion toward the second surface 161b is referred to as a second direction, the inner surface of the edge portion is the first direction. It is preferable to protrude in the first direction based on (161a), but not to protrude in the second direction based on the second surface (161b). That is, the shape of the curved portion of the edge portion 162 is formed so that the shape of the inner space constituting the curved portion is biased in the first direction toward the first surface 161a, and in the second direction toward the second surface 161b. means that it does not protrude, and means that the surface forming the edge portion 162 does not protrude further downward than the second surface 161b. This is to prevent damage to both ends of the tape as described in FIGS. 8 and 9 below, and a detailed description is as follows.

Figure 8 (a) shows that the tape 140 is normally drawn out in the length measuring device according to the present invention, and the tape 140 is drawn out to the center of the tape withdrawal hole 160, Figure 8 (b) is an enlarged cross-sectional view of the tape take-out hole 160 in the state of FIG. 8 (a), and FIG. 8 shows a process in which the tape is normally taken out.

Figure 9 (a) shows that the tape 140 is biased to one side and pulled out in an abnormal direction in the length measuring device according to the present invention. Both ends of the tape 140 come into contact with the edges of the tape take-out hole 160 and are gently bent. 9(b) is an enlarged cross-sectional view of the tape take-out hole 160 in this case. The side end portion of the tape 140 is gently bent without being crumpled or overlapped due to the curved structure of the edge portion 162 .

As described above, in the present invention, since the edge of the tape take-out hole has a curved structure, even when the tape is pulled out biased to one side, the side part of the tape is gently bent along the curved part of the tape take-out hole, and as a result, both ends of the tape are not damaged and durability is maintained. This improving effect is exerted. That is, the present invention solves the problem that both ends of the tape are easily damaged in the prior art length measuring device.

In addition, the length measuring device of the present invention is provided on the bobbin (not shown) on which the tape is wound and is provided on the inside of the case and is provided on the second curved portion 120-2, and operates to rotate the bobbin inside the case. It further includes a gear 180, and on the front surface of the length measuring device, an operation button such as a power button for operation and a display unit for displaying necessary information such as the measured length are provided. Since this configuration is general, a detailed description will not be given. omit it. The manipulating gear 180 rotates in conjunction with the bobbin inside the case, and the bobbin can be rotated by a user manipulating and rotating the manipulating gear by hand. This can be easily utilized when trying to pull the tape tighter in a state where the tape is rolled on a bobbin in a roll form. For example, in the process of measuring the length, when the user rotates the operating gear while the tape tip is fixed at a specific position, the bobbin rotates, thereby making the tape more taut.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concept of the present invention defined in the following claims are also made according to the present invention. falls within the scope of the rights of

Claims

A case consisting of a front part, a rear part and a side part;

a first curved portion 120-1 formed on the side portion;

a tape take-out surface (120-3) formed at one end of the first curved portion and through which the tape inside the case is drawn;

a tape tip 150 attached to an end of the tape and placed in contact with the tape withdrawal surface; and

A hook 120-5 provided on the first curved portion 120-1 and fixing the tape tip during the length measurement process;

The tape tip includes a first tip portion 152 having a curved portion 152a and a second tip portion 154 having a hook 154a provided in front of the first tip portion and hooked to the hook portion 120-5. ),

Length measuring device, characterized in that in the state that the ring (154a) is caught on the hook portion (120-5), the curved portion (152a) of the first tip is in contact with the curved portion of the measurement object.
According to claim 1,

When the tape tip 150 is viewed from the side, the second tip portion does not have the same continuous curvature as the first tip portion, and the second tip portion has a predetermined relationship with the first tip portion in a direction opposite to the direction in which the measurement object is located. Length measuring device, characterized in that forming an angle (θ).
According to claim 1,

A tape take-out hole 160 formed on the tape take-out surface through which the tape passes,

The tape take-out hole 160 is a length measuring device, characterized in that it has a round shape at both ends.
According to claim 3,

The tape withdrawal hole 160 is composed of a central portion 161 having a width at a predetermined interval and edge portions 162 provided at both ends of the central portion,

The length measuring device, characterized in that the inner surface of the edge portion is curved as a whole.
According to claim 1,

a second curved portion 120-2 formed on the side portion and formed on the opposite side of the first curved portion with respect to the tape extraction surface;

a bobbin provided inside the case and around which the tape is wound; and

The length measuring device further comprising a manipulation gear 180 provided on the second curved portion 120-2 and manipulating rotation of the bobbin inside the case.
A case consisting of a front part, a rear part and a side part;

a tape take-out surface 120-3 formed on the side part and through which the tape inside the case is drawn; and

A tape take-out hole 160 formed on the tape take-out surface through which the tape passes,

The tape withdrawal hole 160 is composed of a central portion 161 having a width at a predetermined interval and edge portions 162 provided at both ends of the central portion,

The length measuring device, characterized in that the inner surface of the edge portion forms a curved portion as a whole.
According to claim 6,

The width (d2) of the edge portion is formed larger than the width (d1) of the central portion,

The length measuring device, characterized in that the tape withdrawal surface (120-3) is a surface connecting the first curved portion and the second curved portion.
According to claim 6,

The central portion 161 is composed of a first surface 161a and a second surface 161b facing each other at a predetermined distance from the first surface,

The edge portion is a portion connecting the first curve starting point S1 at which the curved portion starts on the first surface 161a and the second curve starting point S2 at which the curved portion starts on the second surface 161b. 1 curve starting point (S1) is characterized in that the second curve starting point (S2) located inside the length measuring device.
According to claim 8,

If a direction from the central portion toward the first surface 161a is referred to as a first direction, and a direction from the central portion toward the second surface 161b is referred to as a second direction,

The inner surface of the edge portion is formed to protrude in a first direction based on the first surface 161a, but does not protrude in a second direction based on the second surface 161b. Device.