US20220110417A1 - Spool and lacing module provided with same - Google Patents
Spool and lacing module provided with same Download PDFInfo
- Publication number
- US20220110417A1 US20220110417A1 US17/497,982 US202117497982A US2022110417A1 US 20220110417 A1 US20220110417 A1 US 20220110417A1 US 202117497982 A US202117497982 A US 202117497982A US 2022110417 A1 US2022110417 A1 US 2022110417A1
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- United States
- Prior art keywords
- shaft
- connection
- trunk
- disposed
- spool
- 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.)
- Abandoned
Links
- 210000000078 claw Anatomy 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 11
- 230000003746 surface roughness Effects 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43C—FASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
- A43C11/00—Other fastenings specially adapted for shoes
- A43C11/16—Fastenings secured by wire, bolts, or the like
- A43C11/165—Fastenings secured by wire, bolts, or the like characterised by a spool, reel or pulley for winding up cables, laces or straps by rotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/04—Kinds or types
- B65H75/08—Kinds or types of circular or polygonal cross-section
- B65H75/14—Kinds or types of circular or polygonal cross-section with two end flanges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/18—Constructional details
- B65H75/22—Constructional details collapsible; with removable parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/18—Constructional details
- B65H75/28—Arrangements for positively securing ends of material
- B65H75/285—Holding devices to prevent the wound material from unwinding
Definitions
- the present disclosure relates to a spool and a lacing module provided with the spool.
- a conventional spool for tightening a shoelace or the like often includes an upper plate, a lower plate, and a drum disposed between the upper plate and the lower plate.
- a winding passage in which a string material is disposed is provided on the upper surface of the upper plate. With the forward or reverse rotation of the drum, the string material is wound around or unwound around the radially outer surface of the drum.
- the conventional spool has a problem that the string material is disengaged from the spool.
- An exemplary spool of the present disclosure includes a shaft, a trunk portion, and a connection portion.
- the shaft rotates around a central axis extending vertically.
- a string material is wound on a radially outer surface.
- the connection portion connects the shaft and the trunk portion.
- the trunk portion has a first recess portion and a lower flange portion.
- the first recess portion is recessed axially upward from a lower surface of the trunk portion.
- the lower flange portion protrudes radially outward from a lower end portion of the trunk portion and is formed in an annular shape.
- the connection portion is disposed inside the first recess portion and engaged with the trunk portion in a circumferential direction and a lower surface is connected to the shaft.
- connection portion has a first groove portion and an engagement claw.
- the first groove portion is recessed axially downward from an upper surface of the connection portion and is disposed with the string material.
- the engagement claw is disposed in an upper end portion of the connection portion.
- the trunk portion has an engagement portion. The engagement portion is disposed on a radially inner surface of the first recess portion and engaged axially with the engagement claw.
- FIG. 1 is a perspective view schematically illustrating a configuration of a lacing module according to a first exemplary embodiment of the present disclosure
- FIG. 2 is a perspective view of a spool according to the first exemplary embodiment of the present disclosure as viewed from above;
- FIG. 3 is a perspective view of the spool according to the first exemplary embodiment of the present disclosure as viewed from below;
- FIG. 4 is a side view of the spool according to the first exemplary embodiment of the present disclosure.
- FIG. 5 is a perspective view of a connection portion of the spool according to the first exemplary embodiment of the present disclosure
- FIG. 6 is a longitudinal sectional view illustrating a part of the spool according to the first exemplary embodiment of the present disclosure.
- FIG. 7 is a longitudinal sectional view illustrating a part of a spool according to a second exemplary embodiment of the present disclosure.
- a direction in which a central axis of a shaft of a spool extends is simply referred to as an “axial direction”
- a direction orthogonal to the central axis of the shaft of the spool as the center is simply referred to as a “radial direction”
- a direction extending along a circular arc centered on the central axis of the shaft of the spool is simply referred to as a “circumferential direction”.
- the shapes and positional relations of portions will be described on the assumption that the axial direction is a vertical direction, and the vertical direction in FIG.
- FIG. 3 is the vertical direction of the shaft of the spool.
- the above definition of the vertical direction is not meant to restrict the orientation of, or positional relationships among parts of, the spool during use.
- a section parallel to the axial direction is referred to as a “longitudinal section”.
- parallel used in the specification does not mean parallel in a strict sense, but includes substantially parallel.
- FIG. 1 is a top view schematically illustrating a configuration of a lacing module 10 according to an exemplary embodiment of the present disclosure.
- the lacing module 10 is attached to footwear such as an exercise shoe, and can electrically tighten or loosen a shoelace (string material) S of the footwear.
- the lacing module 10 includes a motor 11 , a spool 20 , a battery 13 , and a housing 14 .
- the motor 11 is electrically connected to the battery 13 , and rotates about a rotation shaft C by the current supplied from the battery 13 .
- the gear 12 is connected to the rotation shaft C of the motor 11 and is connected to a shaft 40 of the spool 20 described later via an intermediate gear (not illustrated).
- the driving of the motor 11 causes the gear 12 to rotate in both forward and reverse directions about the rotation shaft C.
- the shaft 40 rotates in both forward and reverse directions about a central axis J (see FIG. 2 ) in conjunction with the rotation of the gear 12 .
- a shoelace S is wound or unwound around the spool 20 by forward and reverse rotation of the shaft 40 .
- the housing 14 houses the motor 11 , the spool 20 , and the battery 13 therein.
- outlets 14 a and 14 b are opened, and the shoelace S is drawn out to the outside of the housing 14 through the outlets 14 a and 14 b.
- FIG. 2 is a perspective view of the spool 20 as viewed from above
- FIG. 3 is a perspective view of the spool 20 as viewed from below
- FIG. 4 is a side view of the spool 20 .
- the spool 20 includes a trunk portion 30 , the shaft 40 , and a connection portion 50 .
- the shaft 40 has a columnar shape and rotates about the central axis J extending vertically.
- the trunk portion 30 is formed in a disk shape having a diameter larger than that of the shaft 40 , and the shoelace S is wound around the radially outer surface.
- the trunk portion 30 includes an upper flange portion 31 , a lower flange portion 32 , a through hole (first recess portion) 33 , an engagement portion 36 , a trunk groove portion (second groove portion) 34 , and a slit 35 .
- the upper flange portion 31 protrudes radially outward from the upper end portion of the trunk portion 30 and is formed in an annular shape.
- the upper flange portion 31 prevents the shoelace S wound around the radially outer surface of the trunk portion 30 from coming off axially upward.
- the lower flange portion 32 protrudes radially outward from the lower end portion of the trunk portion 30 and is formed in an annular shape.
- the lower flange portion 32 supports the shoelace S wound around the radially outer surface of the trunk portion 30 , and prevents the shoelace S from coming off axially downward.
- the through hole 33 penetrates the trunk portion 30 in the axial direction.
- a non-penetrating recess portion recessed axially upward from the lower surface of the trunk portion 30 may be provided.
- the lower portion of the through hole 33 is formed in a quadrangular prism shape and is fitted to the connection portion 50 described later.
- the engagement portion 36 protrudes radially inward from the radially inner surface of the through hole 33 and is formed in an annular shape. That is, the engagement portion 36 is disposed on the radially inner surface of the through hole 33 (see FIG. 6 ).
- the trunk groove portion 34 is recessed axially upward from the lower surface of the trunk portion 30 and extends radially outward from the through hole 33 .
- the shoelace S is disposed inside the trunk groove portion 34 . Thus, the shoelace S can be easily guided radially outward from the through hole 33 .
- the slit 35 penetrates the lower flange portion 32 in the axial direction and extends radially inward from the radially outer peripheral edge of the lower flange portion 32 . Further, the slit 35 linearly extends continuously with the trunk groove portion 34 . Thus, the shoelace S can be inserted into the slit 35 from the trunk groove portion 34 and easily guided to the radially outer surface of the trunk portion 30 .
- the shoelace S can be easily inserted into the slit 35 from the trunk groove portion 34 , and the assembling workability of the spool 20 is improved. Further, the shoelace S guided to the radially outer surface of the trunk portion 30 can be prevented from coming off axially downward from the slit 35 .
- FIG. 5 is a perspective view of the connection portion 50
- FIG. 6 is a longitudinal sectional view illustrating a part of the spool 20 .
- the connection portion 50 is a resin molded article and is formed in a cubic shape.
- the connection portion 50 is disposed inside the through hole 33 to be engaged with the trunk portion 30 in the circumferential direction, and has a lower surface connected to the shaft 40 .
- the connection portion 50 has a connection groove portion (first groove portion) 51 , an engagement claw 52 , and a connection recess portion 53 .
- connection groove portion 51 is recessed axially downward from the upper surface of the connection portion 50 and disposed with the shoelace S.
- the engagement claw 52 protrudes axially upward from the upper surface of the connection portion 50 .
- a pair of engagement claws 52 is disposed with the connection groove portion 51 interposed therebetween.
- the engagement claw 52 has an erected portion 52 a and a projection portion 52 b .
- the erected portion 52 a extends axially upward from the upper surface of the connection portion 50 .
- the projection portion 52 b protrudes radially outward from the upper end portion of the erected portion 52 a .
- the erected portion 52 a is bent in the radial direction.
- connection recess portion 53 is recessed axially upward from the lower surface of the connection portion 50 , and the upper end portion of the shaft is disposed inside.
- the upper end portion of the shaft 40 and the connection recess portion 53 are bonded via an adhesive.
- a contact area between the shaft 40 and the connection portion 50 is increased so that the shaft 40 and the connection portion 50 can be firmly connected.
- the trunk portion 30 and the shaft 40 are connected via an adhesive, but the trunk portion 30 and the shaft 40 may be connected by insert molding without using the adhesive.
- a contact surface X of the shaft 40 with the connection portion 50 has a surface roughness larger than a non-contact surface Y of the shaft 40 with the connection portion 50 .
- adhesion between the shaft 40 and the connection portion 50 is improved, and the shaft 40 and the connection portion 50 can be more firmly connected.
- the surface roughness of a radially outer surface X 1 in contact with the connection recess portion 53 is larger than the surface roughness of an upper surface X 2 in contact with the connection recess portion 46 .
- the adhesion between the shaft 40 rotating about the central axis J and the connection portion 50 is further improved.
- the material configuring the shaft 40 has a higher rigidity than the material configuring the connection portion 50 . Specifically, at least a part of the shaft 40 is made of metal. Thus, a durability and low noise of the shaft 40 can be improved.
- the upper end portion of the engagement claw 52 is inserted into the through hole 33 in a state where the shoelace S is inserted into the connection groove portion 51 .
- the projection portion 52 b abuts on the radially inner surface of the engagement portion 36 , and the erected portion 52 a is bent radially inward.
- the projection portion 52 b is released axially upward from the upper end of the engagement portion 36 , and the bending of the erected portion 52 a is restored.
- connection portion 50 is fitted into the through hole 33 and is engaged with the trunk portion 30 in the circumferential direction.
- the shoelace S is held in the connection groove portion 51 and fixed to the spool 20 . Therefore, the shoelace S can be prevented from coming off from the spool 20 . Further, the shoelace S can be fixed to the spool 20 in a series of operations of connecting the shaft 40 and the trunk portion 30 . Thus, the number of portions of the spool 20 can be reduced to reduce a manufacturing cost, and an assembly workability can be improved.
- FIG. 7 is a longitudinal sectional view illustrating a part of the spool 20 according to the second embodiment.
- the second embodiment is different from the first embodiment in a structure for connecting the connection portion 50 and the shaft 40 .
- Other portions are the same as those in the first embodiment.
- the connection portion 50 has a pile portion 59 .
- the pile portion 59 protrudes axially downward from the lower surface of the connection portion 50 .
- the shaft 40 has an insertion hole 49 .
- the insertion hole 49 is recessed in the axial direction from the upper surface of the shaft 40 , and the pile portion 59 is disposed inside.
- the surface roughness of the radially inner surface of the insertion hole 49 is larger than the surface roughness of the radially outer surface, and thus the adhesion between the shaft 40 and the connection portion 50 is improved so that the shaft 40 and the connection portion 50 can be more firmly connected.
- the present disclosure is applicable to, for example, a spool mounted on a lacing module.
Abstract
A spool includes a shaft, a trunk, and a connection connecting the shaft and trunk. The shaft rotates around a central axis. In the trunk, a string is wound on a radially outer surface. The trunk has a flange, and a recess recessed axially upward from a lower surface of the trunk. The flange protrudes radially outward from a lower end of the trunk. The connection is disposed inside the recess and engaged with the trunk in a circumferential direction and a lower surface is connected to the shaft. The connection has a groove recessed axially downward from an upper surface of the connection and is disposed with the string, and an engagement claw disposed in an upper end of the connection. The trunk has an engagement portion disposed on a radially inner surface of the recess and engaged axially with the engagement claw.
Description
- The present invention claims priority under 35 U.S.C. § 119 to Japanese Patent Application No. 2020-173572 filed on Oct. 14, 2020, the entire content of which is incorporated herein by reference.
- The present disclosure relates to a spool and a lacing module provided with the spool.
- A conventional spool for tightening a shoelace or the like often includes an upper plate, a lower plate, and a drum disposed between the upper plate and the lower plate. A winding passage in which a string material is disposed is provided on the upper surface of the upper plate. With the forward or reverse rotation of the drum, the string material is wound around or unwound around the radially outer surface of the drum.
- However, the conventional spool has a problem that the string material is disengaged from the spool.
- An exemplary spool of the present disclosure includes a shaft, a trunk portion, and a connection portion. The shaft rotates around a central axis extending vertically. In the trunk portion, a string material is wound on a radially outer surface. The connection portion connects the shaft and the trunk portion. The trunk portion has a first recess portion and a lower flange portion. The first recess portion is recessed axially upward from a lower surface of the trunk portion. The lower flange portion protrudes radially outward from a lower end portion of the trunk portion and is formed in an annular shape. The connection portion is disposed inside the first recess portion and engaged with the trunk portion in a circumferential direction and a lower surface is connected to the shaft. The connection portion has a first groove portion and an engagement claw. The first groove portion is recessed axially downward from an upper surface of the connection portion and is disposed with the string material. The engagement claw is disposed in an upper end portion of the connection portion. The trunk portion has an engagement portion. The engagement portion is disposed on a radially inner surface of the first recess portion and engaged axially with the engagement claw.
- The above and other elements, features, steps, characteristics and advantages of the present disclosure will become more apparent from the following detailed description of the preferred embodiments with reference to the attached drawings.
-
FIG. 1 is a perspective view schematically illustrating a configuration of a lacing module according to a first exemplary embodiment of the present disclosure; -
FIG. 2 is a perspective view of a spool according to the first exemplary embodiment of the present disclosure as viewed from above; -
FIG. 3 is a perspective view of the spool according to the first exemplary embodiment of the present disclosure as viewed from below; -
FIG. 4 is a side view of the spool according to the first exemplary embodiment of the present disclosure; -
FIG. 5 is a perspective view of a connection portion of the spool according to the first exemplary embodiment of the present disclosure; -
FIG. 6 is a longitudinal sectional view illustrating a part of the spool according to the first exemplary embodiment of the present disclosure; and -
FIG. 7 is a longitudinal sectional view illustrating a part of a spool according to a second exemplary embodiment of the present disclosure. - Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the drawings. In the specification, a direction in which a central axis of a shaft of a spool extends is simply referred to as an “axial direction”, a direction orthogonal to the central axis of the shaft of the spool as the center is simply referred to as a “radial direction”, and a direction extending along a circular arc centered on the central axis of the shaft of the spool is simply referred to as a “circumferential direction”. Further, in this specification, for the sake of convenience of the description, the shapes and positional relations of portions will be described on the assumption that the axial direction is a vertical direction, and the vertical direction in
FIG. 3 is the vertical direction of the shaft of the spool. Incidentally, the above definition of the vertical direction is not meant to restrict the orientation of, or positional relationships among parts of, the spool during use. Further, in the specification, a section parallel to the axial direction is referred to as a “longitudinal section”. Further, the term “parallel” used in the specification does not mean parallel in a strict sense, but includes substantially parallel. -
FIG. 1 is a top view schematically illustrating a configuration of alacing module 10 according to an exemplary embodiment of the present disclosure. Thelacing module 10 is attached to footwear such as an exercise shoe, and can electrically tighten or loosen a shoelace (string material) S of the footwear. - The
lacing module 10 includes amotor 11, aspool 20, abattery 13, and ahousing 14. Themotor 11 is electrically connected to thebattery 13, and rotates about a rotation shaft C by the current supplied from thebattery 13. - The
gear 12 is connected to the rotation shaft C of themotor 11 and is connected to ashaft 40 of thespool 20 described later via an intermediate gear (not illustrated). The driving of themotor 11 causes thegear 12 to rotate in both forward and reverse directions about the rotation shaft C. Theshaft 40 rotates in both forward and reverse directions about a central axis J (seeFIG. 2 ) in conjunction with the rotation of thegear 12. A shoelace S is wound or unwound around thespool 20 by forward and reverse rotation of theshaft 40. - The
housing 14 houses themotor 11, thespool 20, and thebattery 13 therein. In thehousing 14,outlets housing 14 through theoutlets -
FIG. 2 is a perspective view of thespool 20 as viewed from above, andFIG. 3 is a perspective view of thespool 20 as viewed from below. Further,FIG. 4 is a side view of thespool 20. Thespool 20 includes atrunk portion 30, theshaft 40, and aconnection portion 50. Theshaft 40 has a columnar shape and rotates about the central axis J extending vertically. - The
trunk portion 30 is formed in a disk shape having a diameter larger than that of theshaft 40, and the shoelace S is wound around the radially outer surface. Thetrunk portion 30 includes anupper flange portion 31, alower flange portion 32, a through hole (first recess portion) 33, anengagement portion 36, a trunk groove portion (second groove portion) 34, and aslit 35. - The
upper flange portion 31 protrudes radially outward from the upper end portion of thetrunk portion 30 and is formed in an annular shape. Theupper flange portion 31 prevents the shoelace S wound around the radially outer surface of thetrunk portion 30 from coming off axially upward. - The
lower flange portion 32 protrudes radially outward from the lower end portion of thetrunk portion 30 and is formed in an annular shape. Thelower flange portion 32 supports the shoelace S wound around the radially outer surface of thetrunk portion 30, and prevents the shoelace S from coming off axially downward. - The through
hole 33 penetrates thetrunk portion 30 in the axial direction. Incidentally, instead of the throughhole 33, a non-penetrating recess portion recessed axially upward from the lower surface of thetrunk portion 30 may be provided. The lower portion of thethrough hole 33 is formed in a quadrangular prism shape and is fitted to theconnection portion 50 described later. Theengagement portion 36 protrudes radially inward from the radially inner surface of thethrough hole 33 and is formed in an annular shape. That is, theengagement portion 36 is disposed on the radially inner surface of the through hole 33 (seeFIG. 6 ). - The
trunk groove portion 34 is recessed axially upward from the lower surface of thetrunk portion 30 and extends radially outward from the throughhole 33. The shoelace S is disposed inside thetrunk groove portion 34. Thus, the shoelace S can be easily guided radially outward from the throughhole 33. - The
slit 35 penetrates thelower flange portion 32 in the axial direction and extends radially inward from the radially outer peripheral edge of thelower flange portion 32. Further, theslit 35 linearly extends continuously with thetrunk groove portion 34. Thus, the shoelace S can be inserted into theslit 35 from thetrunk groove portion 34 and easily guided to the radially outer surface of thetrunk portion 30. - Thus, the shoelace S can be easily inserted into the
slit 35 from thetrunk groove portion 34, and the assembling workability of thespool 20 is improved. Further, the shoelace S guided to the radially outer surface of thetrunk portion 30 can be prevented from coming off axially downward from theslit 35. -
FIG. 5 is a perspective view of theconnection portion 50, andFIG. 6 is a longitudinal sectional view illustrating a part of thespool 20. Theconnection portion 50 is a resin molded article and is formed in a cubic shape. Theconnection portion 50 is disposed inside the throughhole 33 to be engaged with thetrunk portion 30 in the circumferential direction, and has a lower surface connected to theshaft 40. Theconnection portion 50 has a connection groove portion (first groove portion) 51, anengagement claw 52, and aconnection recess portion 53. - The
connection groove portion 51 is recessed axially downward from the upper surface of theconnection portion 50 and disposed with the shoelace S. Theengagement claw 52 protrudes axially upward from the upper surface of theconnection portion 50. A pair ofengagement claws 52 is disposed with theconnection groove portion 51 interposed therebetween. - The
engagement claw 52 has an erectedportion 52 a and aprojection portion 52 b. The erectedportion 52 a extends axially upward from the upper surface of theconnection portion 50. Theprojection portion 52 b protrudes radially outward from the upper end portion of the erectedportion 52 a. The erectedportion 52 a is bent in the radial direction. - The
connection recess portion 53 is recessed axially upward from the lower surface of theconnection portion 50, and the upper end portion of the shaft is disposed inside. The upper end portion of theshaft 40 and theconnection recess portion 53 are bonded via an adhesive. By providing theconnection recess portion 53, a contact area between theshaft 40 and theconnection portion 50 is increased so that theshaft 40 and theconnection portion 50 can be firmly connected. Incidentally, in this embodiment, thetrunk portion 30 and theshaft 40 are connected via an adhesive, but thetrunk portion 30 and theshaft 40 may be connected by insert molding without using the adhesive. - A contact surface X of the
shaft 40 with theconnection portion 50 has a surface roughness larger than a non-contact surface Y of theshaft 40 with theconnection portion 50. Thus, adhesion between theshaft 40 and theconnection portion 50 is improved, and theshaft 40 and theconnection portion 50 can be more firmly connected. Further, at the upper end portion of theshaft 40, the surface roughness of a radially outer surface X1 in contact with theconnection recess portion 53 is larger than the surface roughness of an upper surface X2 in contact with the connection recess portion 46. Thus, the adhesion between theshaft 40 rotating about the central axis J and theconnection portion 50 is further improved. - The material configuring the
shaft 40 has a higher rigidity than the material configuring theconnection portion 50. Specifically, at least a part of theshaft 40 is made of metal. Thus, a durability and low noise of theshaft 40 can be improved. - When the
trunk portion 30 and theshaft 40 are connected, the upper end portion of theengagement claw 52 is inserted into the throughhole 33 in a state where the shoelace S is inserted into theconnection groove portion 51. At this time, theprojection portion 52 b abuts on the radially inner surface of theengagement portion 36, and the erectedportion 52 a is bent radially inward. Further, by inserting theconnection portion 50 into the throughhole 33, theprojection portion 52 b is released axially upward from the upper end of theengagement portion 36, and the bending of the erectedportion 52 a is restored. At this time, the lower surface of theprojection portion 52 b comes into contact with the upper surface of theengagement portion 36, and theengagement claw 52 and theengagement portion 36 are engaged in the axial direction. Further, theconnection portion 50 is fitted into the throughhole 33 and is engaged with thetrunk portion 30 in the circumferential direction. - At this time, the shoelace S is held in the
connection groove portion 51 and fixed to thespool 20. Therefore, the shoelace S can be prevented from coming off from thespool 20. Further, the shoelace S can be fixed to thespool 20 in a series of operations of connecting theshaft 40 and thetrunk portion 30. Thus, the number of portions of thespool 20 can be reduced to reduce a manufacturing cost, and an assembly workability can be improved. - When a pair of the
engagement claws 52 is provided with theconnection groove portion 51 interposed therebetween, theengagement claws 52 and theengagement portion 36 can be more firmly engaged in the axial direction. - Next, a second exemplary embodiment of the present disclosure will be described below.
FIG. 7 is a longitudinal sectional view illustrating a part of thespool 20 according to the second embodiment. For convenience of explanation, the same portions as those in the first embodiment illustrated inFIGS. 1 to 6 are denoted by the same reference numerals. The second embodiment is different from the first embodiment in a structure for connecting theconnection portion 50 and theshaft 40. Other portions are the same as those in the first embodiment. - The
connection portion 50 has apile portion 59. Thepile portion 59 protrudes axially downward from the lower surface of theconnection portion 50. Theshaft 40 has aninsertion hole 49. Theinsertion hole 49 is recessed in the axial direction from the upper surface of theshaft 40, and thepile portion 59 is disposed inside. By providing thepile portion 59, a contact area between theshaft 40 and theconnection portion 50 is increased so that theshaft 40 and theconnection portion 50 can be more firmly connected. - In the
shaft 40, the surface roughness of the radially inner surface of theinsertion hole 49 is larger than the surface roughness of the radially outer surface, and thus the adhesion between theshaft 40 and theconnection portion 50 is improved so that theshaft 40 and theconnection portion 50 can be more firmly connected. - The present disclosure is applicable to, for example, a spool mounted on a lacing module.
- Features of the above-described preferred embodiments and the modifications thereof may be combined appropriately as long as no conflict arises.
- While preferred embodiments of the present disclosure have been described above, it is to be understood that variations and modifications will be apparent to those skilled in the art without departing from the scope and spirit of the present disclosure. The scope of the present disclosure, therefore, is to be determined solely by the following claims.
Claims (12)
1. A spool comprising:
a shaft which rotates about a central axis extending vertically;
a trunk portion in which a string material is wound on a radially outer surface; and
a connection portion which connects the shaft and the trunk portion, wherein
the trunk portion has a first recess portion which is recessed axially upward from a lower surface, an annular lower flange portion which protrudes radially outward from a lower end portion, and an engagement portion which is disposed on a radially inner surface of the first recess portion, and
the connection portion is disposed inside the first recess portion such that a lower surface is connected to the shaft, and has a first groove portion which is recessed axially downward from an upper surface and disposed with the string material and an engagement claw which is disposed in an upper end portion and engaged axially with the engagement portion.
2. The spool according to claim 1 , wherein
a pair of the engagement claws is disposed with the first groove portion interposed therebetween.
3. The spool according to claim 1 , wherein
the engagement claw has
an erected portion which extends axially upward from the upper surface of the connection portion, and
a projection portion which protrudes radially outward from an upper end portion of the erected portion, and
the engagement portion protrudes radially inward from a radially inner surface of the first recess portion, and an upper surface is in contact with a lower surface of the projection portion.
4. The spool according to claim 1 , wherein
the trunk portion has a second groove portion which is recessed axially upward from the lower surface and extends radially outward from the first recess portion to be disposed with the string material.
5. The spool according to claim 4 , wherein
the trunk portion has a slit which penetrates the lower flange portion in an axial direction and extends radially inward from a radially outer peripheral edge of the lower flange portion.
6. The spool according to claim 5 , wherein
an inner wall of the slit has an inclined surface of which a width narrows toward an axially upper side.
7. The spool according to claim 1 , wherein
the connection portion is made of resin, and
at least a part of the shaft is made of metal.
8. The spool according to claim 1 , wherein
a contact surface of the shaft with the connection portion has a larger surface roughness than a non-contact surface of the shaft with the connection portion.
9. The spool according to claim 1 , wherein
the connection portion has a connection recess portion which is recessed axially upward from a lower surface and disposed with an upper end portion of the shaft, and
in an upper end of the shaft, a surface roughness of a radially outer surface in contact with the connection recess portion is larger than a surface roughness of an upper surface in contact with the connection recess portion.
10. The spool according to claim 1 , wherein
the connection portion has a pile portion which protrudes axially downward from a lower surface, and
the shaft has an insertion hole which is recessed axially downward from an upper surface and disposed with the pile portion.
11. The spool according to claim 10 , wherein
in the shaft, a surface roughness of a radially inner surface of the insertion hole is larger than a surface roughness of a radially outer surface.
12. A lacing module comprising:
the spool according to claim 1 .
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2020173572A JP2022064759A (en) | 2020-10-14 | 2020-10-14 | Spool and lacing module including the same |
JP2020-173572 | 2020-10-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20220110417A1 true US20220110417A1 (en) | 2022-04-14 |
Family
ID=81078416
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US17/497,982 Abandoned US20220110417A1 (en) | 2020-10-14 | 2021-10-11 | Spool and lacing module provided with same |
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Country | Link |
---|---|
US (1) | US20220110417A1 (en) |
JP (1) | JP2022064759A (en) |
CN (1) | CN216961677U (en) |
Cited By (3)
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---|---|---|---|---|
US20220104586A1 (en) * | 2016-03-15 | 2022-04-07 | Nike, Inc. | Modular spool for automated footwear platform |
US20220110414A1 (en) * | 2020-10-14 | 2022-04-14 | Nidec Corporation | Spool and lacing module provided with same |
US20220175090A1 (en) * | 2020-12-08 | 2022-06-09 | Nidec Corporation | Lacing module |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220104586A1 (en) * | 2016-03-15 | 2022-04-07 | Nike, Inc. | Modular spool for automated footwear platform |
US11864632B2 (en) * | 2016-03-15 | 2024-01-09 | Nike, Inc. | Modular spool for automated footwear platform |
US20220110414A1 (en) * | 2020-10-14 | 2022-04-14 | Nidec Corporation | Spool and lacing module provided with same |
US20220175090A1 (en) * | 2020-12-08 | 2022-06-09 | Nidec Corporation | Lacing module |
US11627779B2 (en) * | 2020-12-08 | 2023-04-18 | Nidec Corporation | Lacing module |
Also Published As
Publication number | Publication date |
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CN216961677U (en) | 2022-07-15 |
JP2022064759A (en) | 2022-04-26 |
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