Classifications

• • 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
• • E—FIXED CONSTRUCTIONS
  • E03—WATER SUPPLY; SEWERAGE
  • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
  • E03B9/00—Methods or installations for drawing-off water
  • E03B9/02—Hydrants; Arrangements of valves therein; Keys for hydrants
  • E03B9/08—Underground hydrants
• • E—FIXED CONSTRUCTIONS
  • E03—WATER SUPPLY; SEWERAGE
  • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
  • E03B9/00—Methods or installations for drawing-off water
  • E03B9/02—Hydrants; Arrangements of valves therein; Keys for hydrants
  • E03B9/14—Draining devices for hydrants
• • 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
  • G01B3/1041—Measuring tapes characterised by casings
• • 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
  • G01B3/1041—Measuring tapes characterised by casings
  • G01B3/1043—Details of internal structure thereof, e.g. means for coupling separately moulded casing halves
• • 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
  • G01B2003/1023—Winding mechanisms
  • G01B2003/103—Winding mechanisms operated by springs
• • 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
  • G01B2003/1058—Manufacturing or assembling methods

Definitions

• the present invention relates to a tape measure, and more particularly, to a tape measure in which a user or operator can easily mount a bobbin and a blade.
• a general tape measure includes a housing, a reel elastically supported inside the housing, a blade wound in a coil form on the reel, and an end hook coupled to an end of the blade. The user withdraws the blade from the end to which the end hook is coupled for measurement, and can measure the length or distance of the object by withdrawing the desired length.
• the elastically actuated reel includes a spring and a bobbin accommodating the mainspring, and the blade is wound around the outer surface of the bobbin and is drawn out into the housing, and the restoring force of the spring is applied. The blade drawn out by the can be returned to the winding direction on the bobbin.
• the present invention relates to a tape measure that is easy to install and, if necessary, easy to replace when a reel, spool or bobbin for winding a blade is mounted on a tape measure.
• the present invention relates to a tape measure capable of indirectly connecting a spring and a bobbin without directly connecting the bobbin, so that the bobbin can be mounted, detached or replaced separately from the spring.
• a tape measure including a mountable bobbin includes a first housing module, a mountable bobbin and a second housing module
• 1 housing module includes a first housing providing a spring space to one side, a rotation shaft having one end rotatably mounted to the first housing, one end coupled to the first housing in the spring space, and the other end coupled to the rotation shaft, the first A spring for rotating the rotation shaft with respect to the housing, and a first cover covering the spring space
• the second housing module includes a second housing corresponding to the first housing and a power transmission unit for transmitting rotation of the rotation shaft to the bobbin
• the bobbin can be mounted and detached around the rotational shaft while being in close contact with the rotational shaft or the first cover among the first housing modules, the bobbin is mounted on the first housing module, and the second housing module is assembled with the second housing module.
• the housing, the spring, the rotating shaft, the power transmission unit, and the bobbin may be mechanically connected.
• the first cover may further include a cylindrical extension protruding to accommodate the outer surface of the rotating shaft, in which case the outer surface of the rotating shaft or the extension is in contact with the inner surface of the bobbin, facilitating mounting of the bobbin and stably rotating the bobbin can support Since the bobbin is mounted in close contact with the outer surface of the rotating shaft, the space of the bobbin can be more efficiently utilized. For example, since the space between the bobbin and the shaft is omitted, the blade wound around the bobbin can be provided in various lengths, without increasing the overall size of the housing while increasing the length of the blade.
• the power transmission unit of the second housing module may mechanically connect the free end of the rotation shaft and the bobbin using a gear or a gear train.
• the power transmission unit is mounted inside the second housing and includes a first gear meshed with the other end of the rotation shaft, a second gear meshed with the first gear, and a third gear meshed with the second gear to transmit rotation to the bobbin.
• the second housing module may further include a second cover that covers the space of the gear in which the first gear and the second gear are mounted.
• the third gear may also be mounted in the gear space or formed integrally with the bobbin.
• the third gear when the third gear is integrally formed with the bobbin, when the second housing module is coupled to the first housing module, the third gear may pass through the second cover and mesh with the second gear, When the gear is separated from the bobbin and mounted in the gear space, when the second housing module is coupled to the first housing module, the third gear may be coupled to the bobbin.
• the first housing may be connected from the outside of the spring, but may also be connected from the inside of the spring.
• the rotating shaft may further include a flange rotating along the outer periphery of the spring space, the other end located outside the spring is bound to the flange, and one end located inside the spring is bound to the first housing in the center of the spring space.
• the fixing protrusion may be directly fixed to one end located inside the spring, and may be rotatably coupled to the rotation shaft at the rotation center of the flange. Accordingly, the fixing protrusion is bound to the rotating shaft, but as the fixing protrusion is bound to the non-circular protrusion of the assembled first housing, one end of the spring is fixed to the first housing and the other end of the spring is fixed to the rotating shaft.
• a tape measure including a mountable bobbin includes a first housing module, a mountable bobbin and a second housing module, the first housing module having one side a first housing providing a spring space with a rotation shaft, one end of which is rotatably mounted to the first housing, and one end is coupled to the first housing in the spring space, and the other end is coupled to the rotation shaft to provide a rotation shaft with respect to the first housing a spring for rotating and a first cover covering the spring space, the second housing module includes a second housing corresponding to the first housing, and the bobbin is a rotation shaft of the first housing module or a rotation shaft while in close contact with the first cover.
• the bobbin While the bobbin is mounted on the first housing module, it is directly bound to the free end of the rotation shaft, and the second housing module While being assembled with the first housing module, the first housing, the spring, the rotating shaft and the bobbin may be mechanically connected.
• the free end of the rotating shaft may be directly coupled to the bobbin while the bobbin is closely attached to the rotating shaft or the first cover without a power transmission unit using a gear or a gear train.
• the free end of the rotating shaft may be formed in a polygonal column shape such as a square or triangular shape, and a corresponding groove may be formed in the bobbin to physically directly bind the other end of the rotating shaft to the bobbin.
• the first cover may further include a cylindrical extension that protrudes to accommodate the outer surface of the rotating shaft, and the inner surface of the bobbin may be provided in a shape that can be in contact with the outer surface of the rotating shaft or the extension.
• the tape measure of the present invention is substantially provided as a semi-finished module such as a first housing module and a second housing module, a bobbin for winding a blade is mounted therebetween, and the mounting process is facilitated by assembling the housing module and easy to replace.
• the restoring force of the spring was transmitted in the order of the bobbin and the blade with respect to the rotating shaft.
• FIG. 1 is a perspective view of a tape measure according to an embodiment of the present invention.
• FIG. 2 is an exploded perspective view of the tape measure of FIG. 1 .
• 3 is a perspective view for explaining the inside of the second housing of the tape measure of FIG. 4 is a cross-sectional view illustrating a cross-section AA of FIG. 1 .
• 5 is a cross-sectional view for explaining a process of combining the tape measure of FIG. 1 .
• 6 is a cross-sectional view for explaining a process of diversifying the length of the blade using a tape measure having a structure similar to that of FIG. 1 .
• 7 is a cross-sectional view for explaining the structure of a tape measure according to other embodiments of the present invention.
• 8 is a cross-sectional view for explaining the structure of a tape measure according to other embodiments of the present invention.
• 9 is a cross-sectional view for explaining the structure of a tape measure according to another embodiment of the present invention.
• FIG. 1 is a perspective view of a tape measure according to an embodiment of the present invention
• Figure 2 is an exploded perspective view of the tape measure of Figure 1
• Figure 3 is a perspective view for explaining the inside of the second housing of the tape measure of Figure 1
• Figure 4 is It is a cross-sectional view for explaining a cross-section AA of FIG.
• FIG. 5 is a cross-sectional view for explaining a coupling process of the tape measure of FIG. 1 . 1 to 5
• the tape measure 100 according to the present embodiment includes a bobbin 140 that can be mounted, detached or replaced, and a first housing module (I) and a first housing module (I) centering on the bobbin 140 2
• the housing module (II) is assembled to complete the assembly of the tape measure. That is, by mounting the desired blade 180 and bobbin 140 to the first housing module (I), and assembling by covering the opposite side with the second housing module (II), assembling and repairing can be facilitated compared to the existing tape measure.
• a tape measure 100 including a mountable bobbin includes a first housing module (I), a bobbin 140 and a second housing module (n).
• the first housing module (I) includes a first housing 110 providing a spring space 112 therein, a rotation shaft 130 having one end rotatably mounted to the first housing 110 , and a spring space 112 . In one end is bound to the first housing 110, the other end is bound to the rotation shaft 130, a spring 190 and a spring space 112 for restoring and rotating the rotation shaft 130 with respect to the first housing 110 It includes a first cover 160 to cover, these elements may be provided semi-assembled in the form of a semi-finished product.
• the second housing module II may include a second housing 120 corresponding to the first housing 110 and a power transmission unit 150 that transmits the rotation of the rotation shaft 130 to the bobbin 140 .
• the bobbin 140 may be covered and the other end of the rotation shaft 130 may be rotatably fixed. In the existing tape measure, the restoring force of the spring was transmitted in the order of the bobbin and the blade based on the rotational axis.
• the restoring force of the spring is transmitted in the order of the rotating shaft, the power transmission unit, the bobbin and the blade based on the housing.
• all of the springs can be released, and once the spring is released, it is impossible to wind the entire spring with the power of an ordinary person.
• the bobbin 140 in a state in which the blades are completely wound is inserted into the rotation shaft 130, and the second housing module (II) is assembled as it is, or the rotation shaft 130 is wound around 90 degrees to put the second Only the process of fixing the housing module (II) can complete the assembly process.
• the spring 190 is in a state confined in the spring space 112 , so there is no fear of separation, and the spring space 112 is It is not dangerous as it is in a state that is fully released from the .
• the spring 190 and the bobbin 140 are not directly connected, and the spring 190 and the bobbin 140 are indirectly transmitted through the rotating shaft 130 and the power transmission unit 150, the spring ( It is possible to separate or replace the bobbin 140 and the blade from the tape measure without disassembling the 190).
• the spring 190 may be provided in the shape of a mainspring, and may be formed to have a narrower width and thicker thickness than in the related art.
• the spring 190 may continuously provide a force for winding the blade 180 , and may allow the blade 180 drawn out of the housing to return to the inside of the housing and wound in the center of the bobbin 140 .
• the spring may be provided in other forms, and in some cases, an electric motor may replace or assist the restoring force instead of the spring.
• a rotation shaft 130 , a first cover 160 , a bobbin 140 , a second cover 170 , and a power transmission unit 150 may be provided between the first housing 110 and the second housing 120 . .
• the rotation shaft 130 is not fixed to the first housing 110 and the second housing 120 and can rotate in the housing, and the spring 190 is accommodated in the spring space 112 .
• the outer side is fixed to the first housing 110 , and the inner side of the spring 190 may transmit the rotational force of the spring to the rotation shaft 130 .
• the first cover 160 having the cylindrical extension 162 formed thereon may be fixed to the inside of the first housing 110 .
• the spring 190, the rotation shaft 130 and the first cover 160 based on the first housing 110 are One integrally connected semi-assembly part may be provided.
• a gear space 122 may be formed inside the second housing 120 , and the first gear 152 and the second gear 154 are provided in the gear space 122 .
• the second gear 154 may be mounted on three protrusion shafts 124 formed in the gear space 122 , and three second gears 154 may be meshed with the first gear 152 as the center.
• the third gear 156 may be provided inside the second gears 154, and the center of the third gear 156 is provided as a hollow so that the binding portion of the first gear 152 is exposed. can As shown on the left side of FIG.
• the first gear 152 , the second gear 154 , the third gear 156 and the second cover 170 are integrally connected based on the second housing 120 .
• Semi-assembled parts may be provided.
• the bobbin 140 on which the blade 180 is wound is provided, the bobbin 140 is inserted into the portion in which the rotation shaft 130 and the cylindrical extension 162 protrude, and the second housing 120 is included.
• the second housing module (II) can be assembled to the first housing module (I). In this process, the stopper 118 and the like may be mounted between the first housing 110 and the second housing 120 .
• the end coupling portion 132 of the rotation shaft 130 may be coupled to the first gear 152 , and the third gear 156 may also be coupled to the inner side of the bobbin 140 . Accordingly, the rotation of the rotary shaft 130 is transmitted to the first gear 152 through the end coupling portion 132 , and the rotation of the first gear 152 is transmitted through the second gear 154 to the third gear 156 . is transmitted, and the rotation of the third gear 156 may be transmitted back to the bobbin 140 .
• the reduction ratio of the gear the rotation ratio of the spring 190 and the rotation ratio of the bobbin 140 can be appropriately adjusted.
• FIG. 6 is a cross-sectional view for explaining a process of diversifying the length of the blade using a tape measure having a structure similar to that of FIG. 1 . 6, the first housing 110, the second housing 120, the rotation shaft 130, the spring 190, the first cover, the second cover, and the blades corresponding to various lengths while maintaining the same gears. and bobbin can be installed or replaced.
• the producer or user can extend the measured length by differently installing the blade (180-m, 180) and the bobbin (140-m, 140) that are fitted in the same structure. And in this process, the sizes of the housings 110 and 120 are maintained as they are, and it may be possible to increase the blade area in the bobbin. From this point of view, producers can form a variety of product groups by using the same structure and housing of the same size, but with different blades and bobbins. It is also possible to In addition, as shown in FIG.
• the bobbin 140 on which the blade 180 is wound is mounted. Even when, the producer or the like before engaging the first gear 152 and the rotary shaft 130 through the central through-hole 126 of the second housing 120 by a small angle , for example, about 90 degrees By turning only the degree, the housing coupling can be completed while binding the first gear 152 and the rotation shaft 130 in this state. That is, the process of maintaining the maximum tension by turning the spring almost all the way before assembly can be omitted.
• the first cover 160 may have a T-shaped cross section as a whole, and a hollow cylindrical extension 162 that can accommodate the rotation shaft 130 may be provided in the center.
• the cylindrical extension 162 may serve as a shaft bearing function of the rotary shaft 130 as an inner surface, and the rotary shaft 130 and the extension 162 may function as a shaft bearing of the bobbin 140 on the outer surface. Since direct contact between the rotary shaft 130 and the bobbin 140 can be prevented or reduced by the cylindrical extension 162 , the sliding between the rotary shaft 130 and the bobbin 140 can be made more smoothly.
• the power transmission unit 150 of this embodiment may use a gear train using the first gear 152 , the second gear 154 , and the third gear 156 , and these gear trains have a through-hole formed in the center. 2 can be protected by a cover 170 .
• FIG. 7 is a cross-sectional view illustrating the structure of a tape measure according to other embodiments of the present invention
• FIG. 8 is a cross-sectional view illustrating the structure of a tape measure according to other embodiments of the present invention. Referring to Figure 7 (a), it is also possible to form the third gear (156-a) integrally with the bobbin (140-a).
• the third gear 156-a of the power transmission unit may be integrally formed with the bobbin 140-a, and the third gear 156-a enters the second cover 170 of the second housing 120. A space can be created. As the second housing 120 and the first housing 110 are coupled, the third gear 156-a integral with the bobbin 140-a passes through the second cover 170 to the second gear 154 and can be engaged, and once engaged, the restoring force transmitted from the rotation shaft 130 can be transmitted to the bobbin 140 . Referring to (b) of Figure 7, the inner side of the bobbin (140-b) and the end binding portion (132-b) of the rotary shaft (130-b) without a power transmission unit can be directly connected.
• the end binding portion 132-b of the rotation shaft 130 is not circular, but non-circular, for example, may be provided in the shape of a polygonal pole such as a square pole, a triangular pole, and the portion bound to the bobbin 140 is also a polygonal pole By forming a groove or hole corresponding to the shape, it may be physically directly bound to the other end of the rotation shaft 130-b.
• the first cover 160-c may be provided in a disk shape without a cylindrical extension.
• the rotating shaft 130-c may transmit a rotational force to the bobbin 140-c through the first gear 152 , the second gear 154 , and the third gear 156-c.
• it may be provided without a power transmission part and a cylindrical extension part, and the end binding part 132-d and the bobbin 140-d of the rotating shaft 130-d may be directly coupled.
• the portion bound to the bobbin 140-d in the end binding portion 132-d may be provided in a polygonal column shape, and the portion inserted into the second housing 120-d may have a cylindrical or truncated cone shape. can be provided.
• the first cover 160-d may be provided in a disk shape without a cylindrical extension,
• the second cover together with the gear space can also be omitted.
• 9 is a cross-sectional view for explaining the structure of a tape measure according to another embodiment of the present invention.
• the tape measure is provided as a first housing module (I) and a second housing module (II) in a semi-finished assembled state, and may include a bobbin (140-e) mounted therebetween.
• the rotation shaft 130-e of the first housing module I may have a structure including a flange 134-e in addition to a simple shaft structure.
• the base of the rotating shaft 130 may further include a flange 134-e that can accommodate the spring 190, and the outer side of the spring 190-e is formed by the flange 134-e. It is connected to the rotating shaft (130-e), the inner side of the spring (190-e) can be fixed to the first housing (110-e).
• the flange (134-e) is integrally formed with the rotating shaft (130-e), and can rotate along the outer periphery or rim of the spring space (112-e), and using the fixing protrusion (114-e), the rotary ( 130-e) may be rotatably mounted relative to the first housing 110-e.
• the fixing protrusion 114-e may include a non-circular groove with respect to the first housing 110-e, and the first housing 110-mountain may include a projection corresponding to the non-circular groove. (114-e) may be bound to the inner end of the spring (190-e), the inner surface of the flange (134-e) may be bound to the outer end of the spring (190-e).
• the rotation shaft 130 - e) , the flange (134-e), the fixing projection (114-e) and the spring (190-e) can also be provided as one semi-assembled part, the manufacturer attaching the rotating shaft to the first housing (110-e) After mounting the semi-finished part including (130-e), inserting the blade 180 and the bobbin (140-e) thereon, and finally including the first gear 152 and the second gear 154
• the assembly of the tape measure may be completed by assembling the second housing 120 .
• the bobbin 140-e and the third gear 156-e may be provided integrally, and the third gear 156-e is coupled to the second gear 154 while the second housing 120 is coupled. can be interlocked.
• those skilled in the art can variously modify and modify the present invention within the scope without departing from the spirit and scope of the present invention as set forth in the following claims. You will understand that it can be changed.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Hydrology & Water Resources (AREA)
• Public Health (AREA)
• Water Supply & Treatment (AREA)
• Tape Measures (AREA)

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• 2020
  • 2020-10-21 KR KR1020200136482A patent/KR102408521B1/ko active Active
• 2021
  • 2021-09-23 WO PCT/IB2021/058683 patent/WO2022084769A1/ko not_active Ceased
  • 2021-09-23 GB GB2305836.5A patent/GB2615226B/en active Active
  • 2021-09-23 JP JP2023524316A patent/JP7586578B2/ja active Active
  • 2021-09-23 US US18/032,769 patent/US12455154B2/en active Active

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