EP1512337A1 - Procede et dispositif de creation de modeles de chaussure, dispositif de mesure du pied et dispositif de positionnement du pied d'un dispositif de mesure du pied - Google Patents

Procede et dispositif de creation de modeles de chaussure, dispositif de mesure du pied et dispositif de positionnement du pied d'un dispositif de mesure du pied Download PDF

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Publication number
EP1512337A1
EP1512337A1 EP02736048A EP02736048A EP1512337A1 EP 1512337 A1 EP1512337 A1 EP 1512337A1 EP 02736048 A EP02736048 A EP 02736048A EP 02736048 A EP02736048 A EP 02736048A EP 1512337 A1 EP1512337 A1 EP 1512337A1
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EP
European Patent Office
Prior art keywords
foot
shoe last
data
configuration
shoe
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP02736048A
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German (de)
English (en)
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EP1512337A4 (fr
Inventor
Hisayo 803 La Classe Nishi-Terao ISHIMARU
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Jannet Inc
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Jannet Inc
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Filing date
Publication date
Application filed by Jannet Inc filed Critical Jannet Inc
Publication of EP1512337A1 publication Critical patent/EP1512337A1/fr
Publication of EP1512337A4 publication Critical patent/EP1512337A4/fr
Withdrawn legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D1/00—Foot or last measuring devices; Measuring devices for shoe parts
    • A43D1/02—Foot-measuring devices
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D1/00—Foot or last measuring devices; Measuring devices for shoe parts
    • A43D1/02—Foot-measuring devices
    • A43D1/025—Foot-measuring devices comprising optical means, e.g. mirrors, photo-electric cells, for measuring or inspecting feet

Definitions

  • the present invention relates to a shoe last design method for designing a shoe last used for shoe manufacturing, a shoe last design unit, a preferable foot measurement unit for designing a shoe last, and a foot spot determination unit of a foot measuring unit.
  • a shoe last is used to make a pattern paper for producing each part of a shoe.
  • a shoe last is also a workbench for installing an inner sole and an outsole when a shoe is assembled.
  • a shoe last further functions as an ironing board for determining a style of a shoe by maintaining its assembled shape until the glue used in the assembly process, along with any other moisture, evaporates after the shoe is assembled.
  • a shoe last functions in various manners when a shoe is manufactured. Further, the configuration of a shoe last determines the configuration of the completed shoe.
  • Shoe lasts fall into two categories: mass production shoe lasts used for mass production of shoes; and a custom order shoe last used for manufacturing a custom order shoe (where a shoe is manufactured according to the measurements of the foot of an individual user).
  • a custom order shoe last generally is produced in accordance with the measured values of sizes (referring to sizes of several spots of the foot) of the foot (the spots below the ankle) of the user.
  • the present invention was developed to overcome the stated problems of the conventional art, and its objective is to facilitate production of a shoe last which does not require a toilsome operation.
  • the present invention provides a shoe last design method comprising: an inputting step for inputting size data of a foot of a user; and a shoe last configuration production step for producing, on the basis of the inputted size data of a foot, configuration data of a shoe last used for manufacturing a shoe of the user.
  • the present invention provides a unit for designing a shoe last comprising: inputting means for inputting size data of a foot of a user who orders a shoe; and shoe last size configuration production means for producing configuration data of a shoe last, on the basis of the inputted size data of a foot.
  • the present invention provides a foot measurement unit, wherein a configuration of a foot of a user is determined on the basis of images obtained as a result of shooting the foot of the user to be measured, comprising: foot spot determination means for placing the foot at a designated spot by placing the dorsum of the foot to be measured in contact with a foot spot determination unit of the foot measurement unit; and shooting means for shooting the foot which is placed at the designated spot by the foot spot determination means.
  • the present invention provides a foot spot determination unit in which, during shooting, a foot is placed in a designated spot, of a foot measurement unit which measures a configuration of a foot of a user on the basis of an image obtained as a result of shooting a foot, comprising: foot spot determination means for placing the foot at a designated spot by touching the dorsum of the foot.
  • the shoe last manufacturing system of the present embodiment comprises foot measurement unit 10, personal computer system (shoe last design unit) 11, and NC (Numerically Controlled) machine tool 12.
  • Foot measurement unit 10 is a unit for producing size data showing a foot size of a user by measuring the configuration of a foot of the user.
  • Foot measurement unit 10 uses a non-contacting type three dimensional configuration measurement unit in the present embodiment as shown in Fig.2.
  • foot measurement unit 10 comprises tightening unit 22, foot configuration measurement unit 24, and displaying unit 26.
  • Tightening unit 22 prevents movement of the user's foot during measurement, and comprises, as shown in the figure, rolling unit 22a to be rolled around a calf of the user, and supporting unit 22b for supporting and fixing rolling unit 22a.
  • rolling unit 22a is rolled around the calf of the user to prevent movement of the foot.
  • Foot configuration measurement unit 24, as shown in Fig.3, comprises bottom unit 24a, and two side units 24b.
  • Foot configuration measurement unit 24 when a calf of the user is held by tightening unit 22 (refer to Fig. 2), is placed such that foot 1 is above bottom unit 24a, and between two side units 24b, and such that foot 1 is not in contact with foot configuration measurement unit 24.
  • a laser pointer 25 On each of bottom unit 24a of foot configuration measurement unit 24, and two side units 24b, is installed a laser pointer 25 which emits a laser slit beam.
  • Each laser pointer 25, as shown in Fig.4 is positioned so as to emit a laser slit beam from three directions (from both sides above the top of foot 1, and below the bottom of foot 1).
  • each laser pointer 25 emits a laser slit beam at foot 1
  • one slit image 25a is projected onto foot 1 as a result of each slit beam overlapping.
  • Slit image 25a is recorded by a video camera (not shown), and the external configuration (outline) of foot 1 of the spot where the above-mentioned slit image 25a is projected is measured by the beam cutting measuring method on the basis of the recorded image.
  • three laser pointers 25 are installed so as to be movable along the length of foot 1 (between the toes and the heel). The overall configuration of foot 1 is measured when each laser pointer 25 moves from the toes of foot 1 toward the heel, and by sequentially emitting a laser slit beam toward foot 1.
  • foot configuration measurement unit 24 which can measure sizes of approximately 60,000 spots of a foot is used.
  • Displaying unit 26 comprises CRT (Cathode Ray Tube), LCD (Liquid Crystal Display) and so forth, and displays a three dimensional configuration showing the entire foot 1, the configuration being determined by each measurement made by foot configuration measurement unit 24, settings of the above-mentioned foot measurement unit 10, and so forth.
  • CRT Cathode Ray Tube
  • LCD Liquid Crystal Display
  • Foot measurement unit 10 of the above-mentioned configuration is only one example, and any type of a foot measurement unit can be used as long as a three dimensional configuration of foot 1 can be measured in a non-contacting manner. Foot measurement unit 10 uses a non-contacting method to prevent changes in the measured configuration of foot 1 when the measurement head and so forth of foot measurement unit 10 touch foot 1.
  • measurement data produced by foot measurement unit 10 of the above-mentioned configuration is inputted into personal computer system 11.
  • measurement data can be forwarded to personal computer system 11 from foot measurement unit 10 by connecting foot measurement unit 10 and personal computer system 11 by a signal cable or the like.
  • Measurement data can be inputted into personal computer system 11 by storing measurement data produced in foot measurement unit 10 in a medium such as floppy disc, MO (Magnet-optical Disc), CD-R (Compact Disc-Recordable), and causing the reading unit (such as a floppy disc drive or CD-ROM drive) installed in personal computer system 11 to read out measurement data stored in the above-mentioned medium.
  • a medium such as floppy disc, MO (Magnet-optical Disc), CD-R (Compact Disc-Recordable)
  • the reading unit such as a floppy disc drive or CD-ROM drive
  • Personal computer system 11 as a general personal computer system, comprises CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), a hard disc unit, operation units such as a keyboard or a mouse, and a displaying unit such as CRT or LCD. Also, in the above-mentioned hard disc, is installed CAD (Computer Aided Design) conversion software for carrying out an operation for producing measurement data showing the configuration of the shoe last for producing a shoe which will comfortably fit a foot on the basis of measurement data of the foot produced in foot measurement unit 10.
  • CAD Computer Aided Design
  • personal computer system 11 comprises foot size data inputting unit 31, shoe last configuration data production unit 32, conversion table 33, and displaying unit 34.
  • Foot size data inputting unit 31 obtains measurement data of a foot produced by foot measurement unit 10, inputs measurement data of a foot, and provides measurement data of a foot to shoe last configuration data production unit 32.
  • foot size data inputting unit 31 is a reading unit such as a floppy disc drive unit.
  • Shoe last configuration data production unit 32 on the basis of a foot size provided from foot size data inputting unit 31, produces CAD data by which the measured foot is expressed in a stereoscopic configuration.
  • Shoe last configuration data production unit 32 on the basis of sizes of several spots of the foot expressed by produced CAD data, produces, by referring to conversion table 33, configuration data showing the configuration of the shoe last used for the custom order shoe fitting for the above-mentioned foot 1.
  • Conversion table 33 shows stored conversion data for converting sizes of several spots of a foot shown in CAD data produced on the basis of measurement data of foot 1 provided by foot size data inputting unit 31, into the configuration of a shoe last corresponding to the above-mentioned spots.
  • Shoe last configuration data production unit 32 by referring to data for conversion stored in conversion table 33, converts the inputted size data of foot 1 into configuration data of a shoe last.
  • Data for conversion stored in conversion table 33 is data produced on the basis of an outcome of an experiment in which the relationship between the size of foot 1 and the configuration of the shoe last for producing the shoe fitting in foot 1 is detected by using several samples. Specifically, the configuration of the user's foot is measured by the above-mentioned foot measurement unit 10. Also, shoe last gypsum is produced by pouring gypsum into a shoe which is comfortable to the user, and the configuration of the shoe last gypsum is measured by the above-mentioned foot measurement unit 10.
  • cross sectional surfaces D1 to Dn are produced by segmenting from the ankle to toes for each equal space d.
  • the number n of surfaces can be fixed in this manner, surfaces can be segmented from the ankle by determining the distance between each surface to be a constant distance (for example, 5mm).
  • Fig.8 data contents for conversion with regard to surface Dm, which is one of surfaces D1 to Dn, are explained.
  • the solid line shows the configuration of the measured foot 1 with regard to surface Dm.
  • the chain line shows a shoe last having an ideal configuration for the configuration of foot 1.
  • Conversion data stored in conversion table 33 is stored for each of a plurality of measured sizes S1 to Sk along the length of the foot as a result of segmenting by equal space the space in the surface configuration of the foot between bottom line L1 and function line Lk of the foot set for each surface (denoted by code b in the figure).
  • the configuration of the shoe last, when the size of the foot measured along its length of a certain foot is Sy, is a size determined by adding to Sy slack portion Sa on the right of the figure and slack portion Sb on the left of the figure.
  • ratio data of Sa to Sy is stored, and when foot size Sy is determined, size Sa of the slack portion can be calculated.
  • ratio data is stored for each size on the horizontal line between S1 and Sk, and a plurality of configurations of the shoe last toward the horizontal direction can be calculated on the basis of size data of the foot.
  • conversion table 33 is stored ratio data for calculating the configuration of the shoe last for each of the surfaces D1 to Dn.
  • conversion table 33 is stored a specific function for determining the configuration of the shoe last which is above function line Lk (denoted by code a in the figure).
  • the height y from function line Lk is inputted into the above-mentioned specific function f (y) and g (y).
  • the calculation result of the function is the coordinate of the horizontal direction (the direction of x).
  • the configuration of the shoe last in the surface is calculated from the horizontal direction on surface Dm.
  • the specific function required can be linear function (in other words, the straight line), quadratic function, cubic function or a function of higher degree than quartic function.
  • any function by which a configuration, close to the configuration of the ideal shoe last calculated by an experiment is calculated can be adopted.
  • the reference position of the coordinate calculated by function f(y) becomes the coordinate of the x direction of point FP calculated by the above-mentioned ratio data.
  • f (0) (the coordinate of the x direction of FP).
  • the coordinate value of the x direction of FP on the surface is xf
  • the x coordinate of the configuration line of the shoe last at height Y1 is f (y1) + xf.
  • the reference position of the coordinate calculated by function g (y) is the coordinate of the x direction of point GP calculated by the above-mentioned ratio data.
  • conversion table 33 are stored information showing the height of function line Lk, and the function for calculating the configuration of the shoe last above function line Lk for each surface D1 to Dn.
  • conversion table 33 instead of storing the above-mentioned ratio data, area ratio data showing the ratio between the cross sectional area of each of the surfaces D1 to Dn, and the ideal cross sectional area of a shoe last calculated experimentally can be stored. Then, by calculating the cross sectional area of the shoe last fitting on the basis of area ratio data stored for each of the cross sectional areas of each of surfaces D1 to Dn, which in turn are calculated on the basis of size data of the foot, the measured size of each part of the foot can be converted into the configuration of the calculated cross sectional area of the shoe last.
  • the configuration of the ideal shoe last can be calculated on the basis of a plurality of parameters, besides the above-mentioned cross sectional area, such as the peripheral length of foot 1 (the length of the border line of the surface), the foot length between the toes and the ankle, the width (the horizontal length in Fig.8), and the height (the vertical length in Fig.8) which are expressed by each of surfaces D1 to Dn.
  • the surface configuration of the ideal shoe last is determined on the basis of the above-mentioned surface area, peripheral length and height expressed by a certain surface Dm.
  • the ideal shoe last configuration is determined on the basis of each of the surface configurations denoted by each of surfaces D1 to Dn of foot 1 by connecting each surface configuration.
  • conversion table 33 is required data for converting data of the foot size into the configuration of the ideal shoe last which is experimentally calculated.
  • Shoe last configuration data production unit 32 on the basis of size data of a foot provided by foot size data inputting unit 31, obtains configuration data of a shoe last on the basis of the size data of the foot for each of surfaces D1 to Dn, and produces configuration data of the entire shoe last matching the inputted size data of the foot.
  • displaying unit 34 In displaying unit 34, as mentioned above, are displayed a stereoscopic image of a shoe last on the basis of CAD data for stereoscopically showing the shoe last corresponding to configuration data of the shoe last which is produced by shoe last configuration data production unit 32, and a stereoscopic image of a foot on the basis of CAD data for stereoscopically showing the foot corresponding to size data of the foot provided by the above-mentioned foot size data inputting unit 31.
  • a designer operating personal computer system 11 when he/she determines that the configuration of the shoe last automatically produced by shoe last configuration data production unit 32 needs to be corrected by using a mouse or a keyboard, can input a correction command by referring to displaying unit 34.
  • the designer can input a correction command accordingly.
  • CAD/NC conversion software for converting CAD data stereoscopically showing an image of a shoe last and so forth into NC data for numerically controlling NC machine tool 12.
  • personal computer system 11 by executing the CAD/NC conversion software, converts CAD data stereoscopically showing the shoe last in accordance with configuration data of the shoe last produced in the above-mentioned manner into NC data for processing by NC machine tool 12 the shoe last of the configuration denoted by the configuration data.
  • NC data corresponding to configuration data of the shoe last produced by personal computer system 11 is inputted into NC machine tool 12.
  • NC data can be forwarded to NC machine tool 12 from personal computer system 11 by connecting personal computer system 11 and NC machine tool 12 by a signal cable and so forth.
  • NC data also can be inputted into NC machine tool 12 by storing NC data produced by personal computer system 11 in a medium such as floppy disc, MO, or CD-R, and reading out NC data stored in the medium by a reading unit or the like installed in NC machine tool 12.
  • NC machine tool 12 cuts shoe last material such as woods, metal, or plastic, and produces a shoe last on the basis of NC data produced by personal computer system 11.
  • NC data provided to NC machine tool 12 is data for controlling NC machine tool 12 to carry out the cutting operation in accordance with the configuration of the shoe last which matches the user's foot as calculated by the above-mentioned personal computer system 11.
  • the shoe last produced by NC machine tool 12 is preferable shoe last for producing a shoe which is comfortable for the user.
  • personal computer system 11 automatically determines the configuration of the shoe last for producing a shoe which is comfortable for the user by providing size data of the user's foot to personal computer system 11, and NC data is produced for producing a shoe last of the above-mentioned configuration.
  • configuration data of the shoe last is produced on the basis of the foot size, by referring to conversion table 33 produced on the basis of the relationship between foot sizes determined by an experiment using several samples and the configuration of the shoe last which seems most suitable. Therefore, by providing the NC data to NC machine tool 12, a preferable shoe last for manufacturing a shoe which is comfortable for the user can be produced.
  • the user's foot measurements cannot be used without modification to produce a custom order shoe last for the manufacture of a comfortable shoe.
  • Processes such as determining the configuration by relying upon experience, intuition and so forth in accordance with the measured foot size, and producing the shoe last in accordance with the determined configuration are required for a shoe last producer.
  • a shoe last producer produces a shoe last, a shoe last of an appropriate configuration can be produced for manufacturing a shoe on the basis of the measured foot size of the user, but a shoe producer without much experience might not be able to produce a shoe last of an appropriate configuration.
  • there are relatively few skilled producers of shoe lasts Consequently, it is relatively expensive to produce a shoe last for manufacturing a custom order shoe.
  • the configuration of the preferable shoe last which is normally determined by a skilled producer by relying upon his/her experience or intuition can automatically be determined by using personal computer system 11; therefore, the above-mentioned processes are not required for a shoe last producer. Furthermore, the cost of producing a shoe last can be decreased; hence, the production cost for a custom order shoe can be decreased.
  • the present invention is not limited by the above-mentioned first embodiment, but various kinds of modifications such as those explained below are possible.
  • the configuration of the shoe last is adjusted by a manual inputting operation in accordance with information such as the design of the shoe, the height of the heel, the type of the foot (such as Egyptian foot, Greek foot, hallux valgus, or pes latus), or fleshiness of the user's foot (for example, the percentage of subcutaneous fat), but the configuration of the shoe last taking the above-mentioned information into account can automatically be determined.
  • information such as the design of the shoe, the height of the heel, the type of the foot (such as Egyptian foot, Greek foot, hallux valgus, or pes latus), or fleshiness of the user's foot (for example, the percentage of subcutaneous fat), but the configuration of the shoe last taking the above-mentioned information into account can automatically be determined.
  • personal computer system 11 of the present modification comprises foot size data inputting unit 31, shoe last configuration data production unit 32, and displaying unit, which are the same as those of the above-mentioned embodiment.
  • personal computer system 11 of the present modification also comprises conversion table group 71 instead of conversion table 33 of the above-mentioned embodiment, and foot type detection unit 70.
  • Foot type detection unit 70 detects the type of the foot on the basis of foot size data provided by foot size data inputting unit 31.
  • the type of the foot can be Egyptian foot, Greek foot, hallux valgus, pes latus, and so forth.
  • the above-mentioned types are classified on the basis of the external configuration of the foot.
  • CAD data stereoscopically showing the external configuration of the foot is produced as mentioned above on the basis of size data of the foot provided by foot size data inputting unit 31.
  • Foot type detection unit 70 outputs to shoe last configuration data production unit 32 foot type information showing the foot type of the user detected in this manner.
  • Conversion table group 71 has conversion tables for each foot type (Egyptian foot conversion table 71a, Greek foot conversion table 71b, hallux valgus conversion table 71c, and so forth) which can be detected by the above-mentioned foot type detection unit 70.
  • Conversion table group 71 contains Egyptian foot conversion table 71a, Greek foot conversion table 71b, hallux valgus conversion table 71c, and so forth, conversion data being produced on the basis of the relationship between sizes of feet of each type, and the configuration of the ideal shoe last calculated by an experiment using several samples.
  • In each conversion table are stored ratio data for conversion for each of surfaces D1 to Dn, function data and so forth as conversion table 33 of the above-mentioned embodiment.
  • shoe last configuration data production unit 32 When shoe last configuration data production unit 32 produces s configuration data of a shoe last on the basis of size data of a foot provided by foot size data inputting unit 31, it chooses one conversion table from several conversion tables in conversion table group 71 in accordance with foot type information provided by foot type detection unit 70, and produces configuration data of a shoe last by referring to the chosen conversion table. For example, when foot type information showing that the foot type of the user is Egyptian foot is provided by foot type detection unit 70, shoe last configuration data production unit 32 chooses Egyptian foot conversion table 71a from conversion table group 71, and produces shoe last configuration data by referring to Egyptian foot conversion table 71a.
  • conversion table group 71 and foot type detection unit 70 By installing conversion table group 71 and foot type detection unit 70, the configuration of the preferable shoe last taking the type of the user's foot into account can be automatically determined.
  • FIG. 10 is the functional configuration of personal computer system 11 for executing the shoe last configuration data production process by which configuration data of shoe last, taking fleshiness of the user's foot (for example, the percentage of subcutaneous fat) into account, can be automatically produced.
  • personal computer system 11 of the present modification comprises foot size data inputting unit 31, shoe last configuration data production unit 32, and displaying unit which are the same as those in the above-mentioned embodiment.
  • personal computer system 11 of the present modification also comprises conversion table group 81 instead of conversion table 33 of the above-mentioned embodiment, height-weight inputting unit 83, and subcutaneous fat percentage measurement unit 82.
  • Height-weight inputting unit 83 receives data showing the height and the weight of the user, and provides the data to subcutaneous fat percentage measurement unit 82.
  • size measurement of the foot by the above-mentioned foot measurement unit 10 is carried out. Then, information showing the height and the weight of the user is obtained and provided to personal computer system 11.
  • Subcutaneous fat measurement unit 82 on the basis of information on the height and the weight of the user provided by height-weight inputting unit 83, infers a subcutaneous fat percentage of the user's foot, and outputs subcutaneous fat percentage information showing the subcutaneous percentage to shoe last configuration data production unit 32.
  • Conversion table group 81 has a conversion table for each range of the subcutaneous fat percentage (0 to A%, A% to B%, B% to C% and so forth).
  • Conversion table 81a for 0 to A%, conversion table 81b for A to B%, conversion table 81c for B to C% and so forth have conversion data produced on the basis of the relationship between the foot size of the user, of the subcutaneous fat percentage within each corresponding range, and the configuration of the ideal shoe last calculated by an experiment.
  • In each of the conversion tables are stored ratio data for conversion for each of surfaces D1 to Dn , function data and so forth, as in the above-mentioned conversion table 33.
  • shoe last configuration data production unit 32 When shoe last configuration data production unit 32 produces configuration data of a shoe last on the basis of size data of a foot provided from foot size data inputting unit 31, it chooses one conversion table from among several conversion tables in conversion table group 81 in accordance with subcutaneous fat percentage information provided from subcutaneous fat percentage measurement unit 82, and produces configuration data of a shoe last by referring to the chosen conversion table. For example, when information showing that subcutaneous fat percentage of the user's foot is x% (A ⁇ x ⁇ B) is provided by subcutaneous fat percentage measurement unit 82, shoe last configuration data production unit 32 chooses conversion table 81b for A to B% from conversion table group 81, and produces shoe last configuration data by referring to conversion table 81b for A to B%.
  • fleshiness of the foot (such as being soft or hard) can be inferred by comparing size data obtained non-contactingly by the above-mentioned foot measurement unit 10, and size data obtained from a foot on the ground.
  • size data obtained non-contactingly by the above-mentioned foot measurement unit 10
  • size data obtained from a foot on the ground.
  • the configuration of the foot changes from the condition when the foot is not in contact with any surface since the foot must bear the weight of the user (the sole spreads).
  • fleshiness of the foot can be inferred.
  • configuration data of the shoe last can be produced by choosing the conversion table in accordance with the inferred fleshiness.
  • both size data of the foot obtained when the foot is not in contact with any surface, and when the foot is on the ground can be used, but configuration data of the appropriate shoe last can be produced when size data of the foot obtained by any one of the described measurement methods is inputted.
  • the conversion table for when the foot is not in contact with any surface for producing shoe last configuration data from size data of the foot measured when the foot is not in contact with any surface, and the conversion table for producing shoe last configuration data from size data of the foot measured when the foot is on the ground need to be prepared.
  • measurement method identification data showing whether data is measured when the foot is not in contact with any surface or on the ground is provided along with measurements of the foot size.
  • configuration data of the shoe last can be produced by referring to the conversion table corresponding to the measurement method identified by the measurement method identification data.
  • Configuration, fleshiness and so forth of a foot differ according to the race of the user (northern European, southern European, southern Asian, eastern Asian), and a conversion table can be prepared for each race. Then, configuration data of the shoe last can be produced by choosing a conversion table in accordance with the race information by asking the user to provide the race information when the foot size is measured.
  • shoe last data can be produced by preparing a conversion table for classification of a plurality of designs of shoes or the height of each heel (for example, 0 to 1cm, 1cm to 2cm), choosing a conversion table in accordance with the designated design or height of the heel, and referring to the chosen conversion table.
  • configuration data of shoe lasts taking into account the several types of information mentioned above can be produced, but on the basis of configuration data of the shoe last produced by shoe last configuration data production unit 32 of the first embodiment mentioned above, the basic configuration data can be amended by taking into account information such as the design of the shoe, the height of the heel, the type of the foot (such as Egyptian foot, Greek foot, hallux valgus, or pes latus), or fleshiness of the user's foot (such as the subcutaneous fat percentage).
  • FIG.11 Shown in Fig.11 is a functional configuration of personal computer system 11 used for executing a shoe last configuration data production process by which configuration data of the shoe last can be automatically produced by amending the basic configuration data by taking the type of the foot into account.
  • personal computer system 11 of the present modification comprises foot type detection unit 70 and amendment unit 90 in addition to foot size data inputting unit 31, shoe last configuration data production unit 32, conversion table 33 and displaying unit 34 which are the same as those in the above-mentioned embodiment.
  • Foot type detection unit 70 detects the foot type on the basis of the data provided by foot size data inputting unit 31.
  • the foot type refers to Egyptian foot, Greek foot, hallux valgus, or pes latus and so forth, and types of feet can be classified on the basis of the external configuration of the foot.
  • CAD data for stereoscopically expressing the external configuration of the foot is produced from data provided by foot size data inputting unit 31 as mentioned above, and by comparing the foot configuration expressed by the CAD data to the pre-stored external configuration of each type of foot, the foot type of the configuration most resembling the foot configuration on the basis of the size data is determined to be the foot type of the user.
  • Foot type detection unit 70 outputs foot type information, showing the foot type of the user detected in this manner, to amendment unit 90.
  • shoe last configuration data production unit 32 by referring to conversion table 33, produces configuration data of the shoe last on the basis of data inputted by foot size data inputting unit 31.
  • shoe last configuration data production unit 32 outputs to amendment unit 90 the produced configuration data of the shoe last (hereinafter, referred to as basic configuration data) to carry out amendment in accordance with the foot type such as Egyptian foot, Greek foot, hallux valgus, or pes latus.
  • Amendment unit 90 carries out an amendment process to basic configuration data provided by shoe last configuration data production unit 32 in accordance with foot type information detected by foot type detection unit 70.
  • amendment unit 90 has data for each foot type, and carries out an amendment process by using data for amendment in accordance with foot type information provided by foot type detection unit 70.
  • Data for amendment of a shoe last for each type of foot is produced, by determining how the basic configuration data should be amended to produce a shoe last having an ideal configuration on the basis of the relationship between foot size of each foot type and the configuration of the ideal shoe last experimentally calculated, and the above data is produced on the basis of that amendment.
  • Data for amendment mentioned above is, for example, data shown in Fig. 8 such that size Sa of the slack portion and size Sb of the slack portion are enlarged by 2% respectively.
  • the configuration of the most appropriate shoe last, taking the user's foot type into account can be automatically determined.
  • the basic configuration data produced by shoe last configuration data production unit 32 can be amended by taking into account information explained in the above-mentioned various modifications such as the design of the shoe, the height of the heel, or fleshiness of the user's foot (such as subcutaneous fat percentage), instead of the foot type.
  • the design of the shoe is a shoe with a shoestring
  • the basic configuration data is amended by taking tightness of the shoestring into account.
  • the design of the shoe and the desired color of the shoe can be taken into account.
  • Foot sizes of human beings differ depending on the time of day when measurement is carried out. For example, foot sizes of human beings become larger in the afternoon than in the morning due to swelling and so forth.
  • configuration data of a shoe last can be produced by taking the time information into account by providing to personal computer system 11 information on the time of day when the foot size is measured to produce size data of the foot along with size data of the foot provided from foot measurement unit 10.
  • personal computer system 11 preferable to the present modification comprises time information inputting unit 41 and foot size data amendment unit 42 in addition to foot size data inputting unit 31, shoe last configuration data production unit 32, conversion table 33 and displaying unit 34 as in the above-mentioned embodiment.
  • Time information inputting unit 41 obtains and inputs information showing the time when the foot is measured, for producing foot size data provided by foot measurement unit 10. Then, information showing the time is provided to foot size data amendment unit 42.
  • Foot size data amendment unit 42 amends foot size data provided by foot size data inputting unit 31 in accordance with time information provided by time information inputting unit 41.
  • foot size data amendment unit 42 stores a table for size amendment storing the foot size measured at the basic time (for example, 2:00 pm), and data showing the average amount of fluctuation of the size determined on the basis of the foot sizes measured at different times (for example, every one hour such as 0:00, 1:00, 2:00) for each of various parts of the foot. Then, when information showing a time other than the basic time is provided, size data in which sizes of several parts of the foot shown in foot size data provided by foot size data inputting unit 31 is amended accordingly.
  • Shoe last configuration data production unit 32 on the basis of foot size data amended by foot size data amendment unit 42, produces configuration data of the shoe last by referring to conversion table 33.
  • data for conversion stored in conversion table 33 is data produced on the basis of the relationship between foot size measured at the basic time, and the configuration of the ideal shoe last.
  • configuration data of a shoe last taking into account the time when measurement is carried out is produced by providing to shoe last configuration data production unit 32 foot size data provided by foot size data inputting unit 31 after amendment of the data by foot size data amendment unit 42; however, the produced configuration data of the shoe last can be amended in accordance with time information after foot size data is provided to shoe last configuration data production unit 32 by foot size data inputting unit 31, and producing configuration data of the shoe last.
  • personal computer system 11 can automatically produce shoe last configuration data by using foot size data; therefore, even if a user lives in a region where there is no producer of shoe lasts, by using the shoe last design method of the present invention, a network service by which a custom shoe can be ordered via a communication network can be provided
  • the system comprises personal computer (PC) 51a which is connected to communication network 2, personal computer (PC) 51b, custom order shoe reception center unit 54, NC machine tool 12, and shoe manufacturing machine 53.
  • Each of personal computers 51a and 51b is installed in reception shops 52a and 52b for receiving an order of a custom order shoe from a user.
  • reception shops 52a and 52b In the reception shops 52a and 52b, is installed foot measurement unit 10 which is described in the above-mentioned embodiment.
  • the number of reception shops of the above-mentioned configuration being connected to communication network 2 is not necessarily restricted to two.
  • the user's foot is measured by foot measurement unit 10, and size data of the user's foot is produced. Then size data of the user's foot is provided to personal computer 51a.
  • Personal computer 51a in addition to measuring the foot, displays images of shoes of several types of designs or color which can be used for manufacturing a custom order shoe on the displaying unit (LCD or CRT), and prompts the user to select a design and color of a shoe.
  • a clerk inputs information into personal computer 51a based on the customer's selection.
  • custom order shoe reception center unit 54 When the inputting operation is completed, the clerk accesses custom order shoe reception center unit 54 via communication network 2 by using personal computer 51a. Then, when communication connection is established between personal computer 51a and custom order shoe reception center unit 54 via communication network 2, personal computer 51a transmits to custom order shoe reception center unit 54 order information containing foot size data, design data, color data and so forth, and client information (such as the name and the address to which the custom order shoe is to be shipped).
  • custom order shoe reception center unit 54 When custom order shoe reception center unit 54 receives order information transmitted from personal computer 51a via network 2, it produces configuration data of the shoe last by executing the same process as that of personal computer system 11 of the above-mentioned embodiment on the basis of size data contained in the order information, and produces NC data for producing the shoe last denoted by the size data. Then, the produced NC data is provided to NC machine tool 12. Also, custom order shoe reception center unit 54 provides to shoe manufacturing machine 53 data showing design and color, and client information contained in the received order information.
  • the shoe last is produced on the basis of NC data provided by custom order shoe reception center unit 54 as in the embodiment described above. Then, the produced shoe last is provided to shoe manufacturing machine 53.
  • shoe manufacturing machine 53 the shoe is produced on the basis of the shoe last provided from NC machine tool 12, and data showing the design and coloration of the shoe provided from custom order shoe reception center unit 54. Then, the manufactured shoe is shipped to the address contained in client information.
  • the custom order shoe the user orders at reception shop 52a is manufactured, and shipped to the address designated by the user.
  • the shoe shipped to the user is the shoe of the design and color specified by the user, and has the size which fits in the user's foot. In the above-mentioned system, the shoe comfortable to the user preference and foot can be provided in this manner.
  • the user orders a custom order shoe by going to a shop such as reception shop 52a or 52b, but the user can place an order with custom order shoe reception server unit 60 from home and so forth.
  • a shop such as reception shop 52a or 52b
  • custom order shoe reception server unit 60 from home and so forth.
  • the system comprises personal computer (PC) 61 a connected to the Internet 3, personal computer (PC) 61b, custom order shoe reception server unit 60, NC machine tool 12, and shoe manufacturing machine 53.
  • Each of personal computers 61 a and 61 b is installed in the user's home 62a and 62b.
  • Several computers are connected to the Internet 3, but, for simplicity, only two computers are shown in the figure.
  • the size of the user's foot needs to be measured.
  • size data of the foot needs to be obtained by a different method.
  • the following method may be used.
  • the user notifies a service provider that he/she will place an order for a custom order shoe by a certain method (for example, by accessing the Web site of the service provider by using the Internet).
  • the service provider sends to the user's home 62a a measurement unit by which the foot size can be easily measured in home 62a.
  • a measurement unit for example, a measurement unit of a sock-type can be used.
  • a sock-type measurement unit can be worn on the user's foot in the same manner as an ordinary sock.
  • sensors installed on several spots of the sock such as distortion sensors
  • size data of the user's foot on the basis of the detected outcome When size data of the foot produced by the method mentioned above is inputted into personal computer 61a, the user accesses the Web page in custom order shoe reception server unit 60 via Internet 3 by use of personal computer 61a.
  • On the hard disc of custom order shoe reception server unit 60 is stored a Web page for reception for receiving an order of a custom order shoe from the user via the Internet 3. The user accesses the Web page for reception by using personal computer 61a.
  • Custom order shoe reception server unit 60 when receiving order information from personal computer 61 a, produces configuration data of the shoe last by executing the same process as of personal computer system 11 of the above embodiment on the basis of size data of the foot contained in the order information, and produces NC data for producing the shoe last denoted by the size data. Then, the produced NC data is provided to NC machine tool 12. Also, custom order shoe reception server unit 60 provides to shoe manufacturing unit 53 data showing the design and color contained in the received order information, and user information.
  • the shoe last is produced on the basis of NC data provided by custom order shoe reception server unit 60 as in the above embodiment. Then the produced shoe last is provided to shoe manufacturing machine 53.
  • shoe manufacturing machine 53 the shoe is manufactured on the basis of the shoe last provided by NC machine tool 12 and data denoting the design and color of the shoe provided from custom order shoe reception server unit 60. Then, the manufactured shoe is shipped to the shipping address contained in user information.
  • the custom order shoe ordered by the user at home 62a is manufactured, and is shipped to the shipping address specified by the user. At this stage, the shoe shipped to the user is in the design and color designated by the user, and comfortable to the user.
  • the shoe fitting in the user's preference and foot can be provided in this manner.
  • the foot measurement unit As a foot measurement unit, a type by which the calf is held in place while a foot is shot is exemplified.
  • the shoe manufacturer does not have to carry out a troublesome operation such as measuring the user's foot using a measure.
  • the user needs to keep the foot still at the spot where the foot is shot while shooting is carried out; therefore, in the foot measurement unit of the first embodiment, the configuration is such that shooting is carried out by fixing the calf and so forth by use of a tightening unit so as not to interrupt shooting.
  • the foot itself is not fixed; hence, the foot may move during shooting, and the foot size may not be measured precisely as a result. In this case, shoe last produced on the basis of the measured foot size may produce an uncomfortable shoe. Therefore, in the present embodiment, a foot measurement unit by which more precise measurement of the foot size can be carried out is explained.
  • foot measurement unit 10' of the present embodiment comprises shooting unit 100 for shooting foot 1 from a plurality of directions by a plurality of digital cameras by fixing foot 1 to be measured at a designated spot.
  • Shooting unit 100 comprises a plurality of digital cameras 110a, 110b, 110c....110m in which a flash light unit which flashes during shooting is installed, spot determination unit 130 for determining the designated spot of foot 1 to be measured, digital cameras 110a, 110b, 110c Vietnamese110m and retention unit 200 for fixing and retaining spot determination unit 130.
  • Shooting unit 100 outputs image data of foot 1 which is shot from a plurality of directions by each of digital cameras 110a, 110b, 110c Vietnamese110m to the computer system (not shown) via a cable and so forth. Then, analysis for each image is carried out by the computer system, and the configuration of foot 1 to be measured is determined.
  • Retention unit 200 is a unit which mainly consists of three units, in other words, base unit 210, cavity forming unit 220, and heel unit 230.
  • Base unit 210 is the unit installed in the ground and so forth when shooting unit 100 is used.
  • Base unit 210 is a flat rectangular portion having thickness in which a digital camera can be mounted.
  • two digital cameras 110a and 110b are mounted as shown in Fig. 15 and Fig. 16 in spots opposite to the bottom of foot 1 which is placed at a designated spot.
  • Digital cameras 110a and 110b are fixed and retained at each spot.
  • Digital cameras 110a and 110b shoot the bottom of foot 1.
  • Heel unit 230 is the portion mounted toward the top of base unit 210 at the heel of foot 1 which is placed at a designated spot.
  • Surface 230a of heel unit 230 (refer to Fig. 17) is a curved surface. The curved surface curves to face foot 1 whose designated spot is determined.
  • In heel unit 230 are mounted digital cameras 110c, 110d, and 110e to shoot foot 1 whose designated spot is determined from the heel side, and each of cameras is fixed and retained at each spot.
  • Each of digital cameras 110c, 110d, and 110e shoots foot 1 from behind obliquely toward the left, from directly behind, and from behind obliquely toward the right.
  • Cavity forming unit 220 is a portion covering the toe end of foot 1 whose designated spot is determined. Cavity forming unit 220 forms cavity S into which foot 1 is inserted along with base unit 210. Width T of Cavity S is approximately 0.15m (refer to Fig. 17). Height Ta of cavity S on the toe side is approximately 0.08m (refer to Fig. 16). Height Tb of Cavity S on the dorsum side is 0.13m (refer to Fig. 16). Hence, the cavity is sufficiently large for a man's foot to be inserted.
  • the size of the cavity formed by cavity forming unit 220 and base unit 210 is not limited to the above-mentioned size. The size of cavity S should be such that foot 1 to be measured can easily be inserted.
  • digital cameras 110f, 110g, 110h, 110i, 110j, 110k, 110l, and 110m for shooting foot 1, placed at the designated spot, from its dorsum side.
  • Digital cameras 110f, 110g, 110h, 110i, 110j, 110k, 110l, and 110m are fixed and retained at each of their designated spots.
  • Digital cameras 110f, 110g, and 110i are mounted above and behind the dorsum of foot 1 obliquely toward the left.
  • Digital cameras 110k, 110l, and 110m are mounted above and behind the dorsum of foot 1 obliquely toward the right.
  • Digital cameras 110i, and 110j are mounted above the dorsum of foot 1.
  • Digital cameras shoot foot 1 from each direction of mounted digital cameras.
  • both end units 130a and 130b of spot determination unit 130 are fixed both end units 130a and 130b of spot determination unit 130.
  • the central portion of spot determination unit 130 is tangent unit 130c which curves to project upwards.
  • Tangent unit 130c is in a curved configuration which resembles the dorsum of the foot.
  • foot 1 when the dorsum of foot 1 is placed beneath tangent unit 130c of spot determination unit 130, foot 1 is not in contact with any surface above base unit 210. In other words, in spot determination unit 130, the spot of foot 1 is determined as a spot without touching any surface.
  • spot determination unit 130 the spot of foot 1 is determined as a spot without touching any surface.
  • a plurality of digital cameras 110a to 110m are fixed at predetermined spots in retention unit 200.
  • the spot of foot 1 is fixed at approximately the constant spot during shooting by spot determination unit 130.
  • the relationship of spots between foot 1 whose spot is determined by spot determination unit 130 to be measured, and digital cameras 110a to 110m always is approximately constant.
  • an operation such as adjusting the spots of digital cameras 110a to 110m by shining is not necessary.
  • Shooting foot 1 from several directions especially is preferable for improving precision of measurement, but several digital cameras are required to shoot from several directions.
  • the operation of adjusting the spot becomes more troublesome.
  • shooting unit 100 since the relationship of spots between foot 1 whose spot is fixed, and digital cameras 110a to 110m is approximately constant, a toilsome operation for adjusting the spot is not required even if several digital cameras are used.
  • shooting by several digital cameras 110a to 110m can begin immediately after foot 1 is fixed at the designated spot by spot determination unit 130. Also, shooting can end in a short period of time (shooting time when shooting is carried out by each of digital cameras 110a to 110m all at once). (Shooting ends momentarily if shooting is carried out by each of digital cameras 110a to 110m the same time.)
  • the burden such as fixing foot 1 at a designated spot for a long period of time is alleviated. Alleviation of the burden is great especially when the spot of foot 1 is not in contact with any surface as in the present embodiment.
  • spot determination unit 130 since foot 1 is fixed at a designated spot by placing the dorsum of foot 1 beneath spot determination unit 130, a spot determination unit and so forth necessary for shoe last production are not required for the bottom side, toes and so forth of foot 1. In other words, there is no unit covering toes or the bottom side of the foot necessary for shoe last production, and only the dorsum of foot 1 whose measurement is not necessary for shoe last production is covered by spot determination unit 130. Hence, spot determination unit 130 for determining the spot of foot 1 does not hinder shooting of foot 1 by digital cameras 110a to 110m.
  • the present invention is not limited to the above-mentioned embodiment. Various modifications such as the ones described below are possible.
  • foot 1 is shot from a plurality of directions by several digital cameras 110a to 110m.
  • a control unit shown in Fig. 19 can be mounted in foot measurement unit 10'.
  • control unit is equipped with timing control unit 500 for controlling the timing of shooting by each of digital cameras 110a to 110m.
  • Timing control unit 500 outputs the signal for commencement for ordering each of digital cameras 110a to 110m the commencement of shooting.
  • Timing control unit 500 controls the timing of commencement for shooting by each of digital cameras 110a to 110m by the timing described below.
  • timing control unit 500 outputs a commencement signal to shift the timing of commencement for shooting by digital cameras 110a and 110b, and digital cameras 110i and 110j by a designated amount of time (one or two seconds).
  • timing control unit 500 can output the commencement signal at the same timing as of digital cameras 110i, and 110j.
  • commencement signal is outputted at the same timing as that of digital cameras 110a and 110b.
  • spot determination unit 130 for fixing foot 1 at the designated spot and the method for installing spot determination unit 130 in retention unit 200 are not limited to those explained in the above embodiment. Any configuration of spot determination unit 130, and method for installing spot determination unit 130 in retention unit 200 can be adopted as long as the spot of foot 1 can be determined by placing the dorsum of foot 1.
  • the configuration can be such that one end unit 130d of spot determination unit 130' is fixed on the surface of any one of internal units 220a and 220b (shown in the figure is internal unit 220a), and the other end is tangent unit 130e in a curved configuration.
  • the configuration can be such that the spot of foot 1 is determined by using two units such as spot determination units 1300 and 1310 installed in each of internal units 220a and 220b.
  • spot determination units 1300 and 1310 installed in each of internal units 220a and 220b.
  • end units 1300a and 1310a of spot determination units 1300 and 1310 are fixed to internal units 220a and 220b, the configuration of end units 1300b, and 1310b is curved toward the top.
  • contraction unit 1300c and 1310c which contract.
  • a biasing means such as a spring.
  • end unit 1300b is pressed toward end unit 1310b
  • end unit 1310b is pressed toward end unit 1300b (the stretched state).
  • the curved configuration formed by end units 1300b and 1310b is smaller than the curve formed by tangent unit 130c of the embodiment mentioned above.
  • contraction units 1300c and 1310c shrink in accordance with the size of the dorsum of inserted foot 1 as shown in Fig.22.
  • end units 1300b and 1310b can shift toward the direction of which end units 1300b and 1310b spread from each other by keeping the dorsum of foot 1 placed on end units 1300b and 1310b.
  • spot determination units 1300 and 1310 mentioned above individual differences of the size of foot 1 to be measured can be assimilated. Therefore, despite the differences of the size of the foot to be measured, end units 1300b and 1310b are constantly placed on the dorsum of foot 1, and the movement of foot 1 can be deterred during shooting.
  • retention unit 200 having three units such as base unit 210, cavity forming unit 220, and heel unit 230 retains spot determination unit 130, and relationship of the spots between the spot of foot 1 which is determined by spot determination unit 130 and the spots of each of digital cameras 110a to 110m becomes approximately constant.
  • the configuration of retention unit 200 is not limited to the one explained in the embodiment mentioned above.
  • the configuration of retention unit 200 can be in any configuration as long as the relationship of spots between the spot of foot 1 and the spots of each of digital cameras becomes approximately constant.
  • the configuration of retention unit can be such that cavity S and so forth are not formed.
  • spot determination unit 130 can be used in a condition such that spot determination unit 130 is retained by retention means other than retention unit 200.
  • foot 1 can be shot by placing units other than digital cameras in the manner exemplified above.
  • foot 1 can be shot by an ordinary camera.
  • the picture image as a result of shooting by the ordinary camera can be read in as image data by a scanner and so forth, and analytical process for measuring the configuration can be carried out to the image data.
  • the number of digital cameras can be a number sufficient to obtain a plurality of images necessary for determining the configuration of foot 1. In other words, since images of at least four surfaces; the top (the dorsum), the bottom (the sole), and both sides of foot 1 need to be obtained, there should be one camera for each of the surfaces, in other words, four cameras overall.

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  • Life Sciences & Earth Sciences (AREA)
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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP02736048A 2002-06-11 2002-06-11 Procede et dispositif de creation de modeles de chaussure, dispositif de mesure du pied et dispositif de positionnement du pied d'un dispositif de mesure du pied Withdrawn EP1512337A4 (fr)

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WO2003103433A1 (fr) 2003-12-18
EP1512337A4 (fr) 2007-06-13
CN1289015C (zh) 2006-12-13
US20040168329A1 (en) 2004-09-02
CN1520263A (zh) 2004-08-11
AU2002311171A1 (en) 2003-12-22

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