WO2020087975A1 - 紧固装置 - Google Patents

紧固装置 Download PDF

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Publication number
WO2020087975A1
WO2020087975A1 PCT/CN2019/095128 CN2019095128W WO2020087975A1 WO 2020087975 A1 WO2020087975 A1 WO 2020087975A1 CN 2019095128 W CN2019095128 W CN 2019095128W WO 2020087975 A1 WO2020087975 A1 WO 2020087975A1
Authority
WO
WIPO (PCT)
Prior art keywords
unit
fastening device
knob
ratchet arm
detent
Prior art date
Application number
PCT/CN2019/095128
Other languages
English (en)
French (fr)
Inventor
陈金柱
Original Assignee
陈金柱
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 陈金柱 filed Critical 陈金柱
Priority to JP2020551358A priority Critical patent/JP7212057B2/ja
Priority to KR1020217007221A priority patent/KR102576704B1/ko
Priority to EP19877823.5A priority patent/EP3875414A4/en
Priority to US17/261,167 priority patent/US11825911B2/en
Publication of WO2020087975A1 publication Critical patent/WO2020087975A1/zh
Priority to JP2022175956A priority patent/JP2022190050A/ja

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Classifications

    • 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
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/44—Constructional details
    • B65H75/48—Automatic re-storing devices
    • 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
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43C—FASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
    • A43C11/00—Other fastenings specially adapted for shoes
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43C—FASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
    • A43C9/00—Laces; Laces in general for garments made of textiles, leather, or plastics
    • 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
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/44—Constructional details
    • B65H75/4481—Arrangements or adaptations for driving the reel or the material
    • B65H75/4492—Manual drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/35—Ropes, lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/36—Wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/39—Other types of filamentary materials or special applications

Definitions

  • the invention relates to a fastening device, and in particular to a fastening device capable of retracting and releasing a tether.
  • string objects such as ropes and laces are often used to consolidate items.
  • the most common means of consolidating is to use the thread body to shuttle back and forth through the holes in the item, and then fix it with a knot, such as tying rope shoes.
  • this kind of collection method is easy to cause the rope knot to loosen due to external force factors. Not only must the rope knot be re-tied, but also a lot of inconveniences are caused by the inability to securely confine the goods.
  • a simple wire harness mechanism which includes a housing, a detent unit and a spring, the housing has a perforation for the wire body to pass, which passes between the spring and the detent unit
  • the applied force makes the wire body clamped between the detent unit and the housing to achieve the fastening effect. Pressing the spring to change the position of the detent unit can pull the wire body to change the length of the wire body.
  • this type of wire harness mechanism provides the fastening force through the return force of the spring, and it is still easy to loosen the wire body due to vibration or external force factors, and this wire harness mechanism has no space to accommodate the wire body, so the wire body Exposure is also dangerous.
  • buckle that can rotatably consolidate and fix the lace.
  • the wire body can be accommodated inside the buckle, and the length of the wire body can be adjusted through the mechanical force interference of the internal components. At the same time adjust the tightness of the beam.
  • the structure of such a buckle is complicated, which increases the manufacturing cost and has the problem of difficulty in assembly and maintenance.
  • the invention provides a fastening device, which can increase the structural reliability by avoiding the shortening of the service life through the configuration of the clamping portion of the detent unit.
  • An embodiment according to an aspect of the present invention provides a fastening device, which includes a housing unit, a knob, a detent unit, and a wire reel.
  • the housing unit has an axial direction and includes a plurality of teeth.
  • the knob is covered on the housing unit along the axial direction, the detent unit is coupled with the knob and includes a clamping part, and the wire reel is used for winding a tether.
  • the knob drives the detent unit to switch between a first position and a second position in the axial direction.
  • the detent unit When the detent unit is in the first position, the detent unit prevents the reel from releasing the tether; when the detent unit is in the second position When the locking part is engaged with at least one bite tooth, the detent unit does not prevent the reel from releasing the tether.
  • the structural relationship between the locking portion and the at least one bite tooth helps to smoothly switch the latching unit from the second position to the first position and increase structural reliability.
  • the detent unit may further include a ratchet arm to selectively engage with at least one bite tooth, and the catch portion may be located on the ratchet arm and outward in a radial direction of the housing unit Protruding.
  • the ratchet arm may have a first height H 1 , and the card portion has a second height H 2 , satisfying the relationship of H 2 ⁇ (H 1/2 ).
  • the ratchet arm may have a height centerline, and the card portion is lower than or equal to the height centerline.
  • a fastening device which includes a housing unit, a knob, a detent unit, and a wire reel.
  • the housing unit has an axial direction.
  • the knob is covered on the housing unit along the axial direction.
  • the detent unit is coupled with the knob and includes a clamping part.
  • the wire reel is provided for a tether coupling.
  • one of the knob or the housing unit includes a plurality of teeth, and the rotation of the knob drives the switching unit to switch between a first position and a second position in the axial direction.
  • the switching unit When the switching unit is in the first position, the switching unit Prevent the reel from releasing the tether; when the detent unit is in the second position, the catch portion engages with at least one bite tooth, and the detent unit does not prevent the reel from releasing the tether.
  • the detent unit may further include a ratchet arm to selectively engage with at least one bite tooth, and the catch portion is located on the ratchet arm and protrudes outward in a radial direction of the housing unit Out.
  • the ratchet arm may have a first height H 1 , and the card portion has a second height H 2 , satisfying the relationship of H 2 ⁇ (H 1/2 ).
  • the ratchet arm may have a height centerline, and the card portion is lower than or equal to the height centerline.
  • FIG. 1 is a schematic perspective view of a fastening device according to an embodiment of the invention.
  • FIG. 2 is an exploded schematic view of the fastening device of FIG. 1;
  • FIG. 3 shows another explosion schematic diagram of the fastening device of FIG. 1;
  • FIG. 4 is a schematic cross-sectional view of the fastening device of FIG. 1;
  • FIG. 5 is another schematic cross-sectional view of the fastening device of FIG. 1;
  • FIG. 6 is a schematic cross-sectional view of the fastening device of FIG. 4 along the cutting plane line 6-6;
  • FIG. 7 is a schematic cross-sectional view of the fastening device of FIG. 5 along the cutting plane line 7-7;
  • FIG. 8 is a schematic cross-sectional view of the fastening device of FIG. 4 along the cutting plane line 8-8;
  • FIG. 9 is a schematic perspective view of a fastening device according to another embodiment of the invention.
  • FIG. 10 is an exploded schematic view of the fastening device of FIG. 9;
  • FIG. 11 is a schematic diagram of another explosion of the fastening device of FIG. 9;
  • FIG. 12 is a schematic cross-sectional view of the fastening device of FIG. 9.
  • FIG. 13 is another schematic cross-sectional view of the fastening device of FIG. 9.
  • an element or mechanism or module, etc.
  • connection when an element (or mechanism or module, etc.) is "connected”, “set” or “coupled” to another element herein, it may mean that the element is directly connected, directly set or directly coupled to another element, It can also mean that an element is indirectly connected, indirectly arranged, or indirectly coupled to another element, which means that there are other elements between the element and the other element.
  • an element when it is explicitly stated that an element is “directly connected”, “directly arranged” or “directly coupled” to another element, it means that no other element is interposed between the element and the other element.
  • the first, second, and third terms are only used to describe different elements or components, and there is no limitation on the elements / components themselves. Therefore, the first elements / components can also be renamed as the second elements / components.
  • FIG. 1 illustrates a perspective schematic view of a fastening device 100 according to an embodiment of the present invention
  • FIG. 2 FIG. 3 is an exploded schematic view of the fastening device 100 of FIG. 1
  • FIG. 3 is another exploded schematic view of the fastening device 100 of FIG. 1
  • FIG. 4 is a cross-sectional schematic view of the fastening device 100 of FIG. 1
  • FIG. 5 1 is another schematic cross-sectional view of the fastening device 100 of FIG.
  • FIG. 6 is a schematic cross-sectional view of the fastening device 100 of FIG. 4 along the cutting plane line 6-6
  • FIG. 7 is a fastening device of FIG. 5.
  • FIG. 100 is a schematic cross-sectional view along the cutting plane line 7-7
  • FIG. 8 is a schematic cross-sectional view of the fastening device 100 of FIG. 4 along the cutting plane line 8-8.
  • the fastening device 100 includes a housing unit 200, a knob 500, a trigger unit 400 and a wire reel 300.
  • the housing unit 200 has an axial direction I1 and includes a plurality of engaging teeth 230.
  • the knob 500 covers the housing unit 200 along the axial direction I1.
  • the detent unit 400 is coupled to the knob 500 and includes a clamping portion 460.
  • the thread (not shown) is wound. Wherein, the rotation of the knob 500 drives the switching unit 400 to switch between a first position and a second position along the axial direction I1.
  • the switching unit 400 When the switching unit 400 is in the first position, the switching unit 400 prevents the reel 300 from releasing the tether, ie To prevent the reel 300 from rotating in a first direction A1; when the detent unit 400 is in the second position, the locking portion 460 engages with at least one bite tooth 230, and the detent unit 400 does not prevent the reel 300 from releasing the tether, ie , Does not prevent the reel 300 from rotating in the first direction A1.
  • the latching unit 400 when the latching unit 400 is located at the second position, the structural relationship between the engaging portion 460 and the at least one biting tooth 230 helps the latching unit 400 to smoothly switch from the second position to the first position Structural reliability.
  • the detailed structure of the fastening device 100 will be described later.
  • the housing unit 200 has a radial direction, and the housing unit 200 further includes a ring wall 220 and a base 210.
  • the ring wall 220 surrounds an internal space 240.
  • the base 210 is provided for the ring wall 220, and the ring wall 220 may be engaged ⁇ ⁇ ⁇ ⁇ ⁇ 210 ⁇ The way is set on the base 210.
  • a plurality of occlusal teeth 230 are located on the ring wall 220 and face the inner space 240, and the occlusal teeth 230 are located on an upper end of the ring wall 220.
  • the wire reel 300 is in a hollow ring shape.
  • the wire reel 300 is located in the inner space 240 and includes a ring-shaped track 310 and a plurality of fitting teeth 320.
  • the ring-shaped track 310 is used for winding the tether, and the fitting teeth 320 are selectively engaged with the stopper.
  • the mobile unit 400 is coupled. When the reel 300 is driven to rotate, the tether can be retracted or released as the reel 300 rotates in different directions.
  • the knob 500 includes a guide rail 510, a convex post 520, and two positioning blocks 540.
  • the guide rail 510 is disposed on an inner wall of the knob 500.
  • the convex post 520 protrudes toward the inner space 240 along the axial direction I1, and the two positioning blocks 540 are It is symmetrically arranged on the outer side of the convex post 520 in the radial direction.
  • the detent unit 400 includes a ring-shaped body 440, two holding portions 410, 420, three guide portions 430, three ratchet arms 450, three clamping portions 460, a plurality of locking teeth 470, a central hole (not shown) and two The bumps 491, 492.
  • the central hole is located in the center of the ring-shaped body 440, and the guide portion 430 is a helical tooth structure protruding outward from the ring-shaped body 440 and used for coupling with the knob 500.
  • the two holding portions 410, 420 protrude inward from the ring-shaped body 440 and are symmetrically arranged with each other.
  • the holding portions 410, 420 each include a free end 411, 421.
  • the free ends 411, 421 can move in the radial direction after being stressed, and after the external force is released To reset.
  • the two bumps 491 and 492 protrude inward from the ring-shaped body 440, and there is a space between the two bumps 491 and 492 and the two free ends 411 and 421.
  • the engaging teeth 470 are located below the ring-shaped body 440 and can selectively mesh with the engaging teeth 320 of the wire reel 300.
  • Each ratchet arm 450 is selectively engaged with at least one bite tooth 230, and each ratchet arm 450 includes a distal end 452 and a proximal end 451, the proximal end 451 is connected to the outside of the ring-shaped body 440, and the distal end 452 is used to The bite teeth 230 are detachably engaged.
  • the three locking portions 460 are located on the ratchet arm 450 and protrude outward in the radial direction, and the locking portion 460 has a single-tooth structure.
  • the ratchet arm 450 has a first height H 1
  • the clamping portion 460 has a second height H 2 , satisfying the relationship of H 2 ⁇ (H 1/2 ).
  • the ratchet arm 450 has a height center line L1, and the locking portion 460 is lower than or equal to the height center line L1, and in the embodiment of FIG. 4, the locking portion 460 is lower than the height center line L1.
  • first height H 1 refers to the maximum height of the ratchet arm 450 in the axial direction I1. Therefore, if the height of each part of the ratchet arm 450 is different, the maximum height is used as the first height H 1 .
  • the detent unit 400 is located at the first position, the engaging teeth 470 of the detent unit 400 mesh with the engaging teeth 320 of the reel 300, and when the above conditions are satisfied, the ratchet
  • the distal end 452 of the arm 450 (see FIG. 2) meshes with the occlusal teeth 230 in the first direction A1 (see FIG. 2), and the distal end 452 of the ratchet arm 450 continuously engages with the second direction A2 (see FIG. 2)
  • the bite teeth 230 are separated, and the latch portion 460 is not engaged with the bite teeth 230 due to the position being relatively lower than the bite teeth 230.
  • turning the knob 500 in the second direction A2 can drive the detent unit 400 to interlock the wire reel 300, and when the knob 500 is not actuated, the distal end 452 of the ratchet arm 450 abuts the bite tooth 230 to prevent the wire reel 300 rotates in the first direction A1, and the tether can be prevented from being released.
  • turning the knob 500 in the first direction A1 can drive the detent unit 400 to rise in the axial direction I1 to separate the detent unit 400 from the reel 300. More specifically, when the detent unit 400 is in the first position, the guide portion 430 is engaged with the guide rail 510 of the knob 500, and as shown in FIG. 8, one of the positioning blocks 540 is located at the free end 411 of the holding portion 410 and Between the protrusions 491, another positioning block 540 is located between the free end 421 of the holding portion 420 and the protrusion 492.
  • the detent unit 400 When the knob 500 rotates in a first direction A1, the detent unit 400 is limited by the engagement relationship between the ratchet arm 450 and the bite tooth 230 and cannot rotate together, so the two positioning blocks 540 are pressed against the two free ends 411 and 421, respectively.
  • the free ends 411 and 421 are deformed in the radial direction so that the knob 500 can rotate relative to the detent unit 400, and the guide portion 430 is guided by the guide rail 510 to rise in the axial direction I1 relative to the guide rail 510 to switch the detent unit 400 Located in the second position.
  • one of the aforementioned positioning blocks 540 is changed between the free end 411 of the holding portion 410 and the protrusion 492, and the other positioning block 540 is changed between the free end 421 of the holding portion 420 and the protrusion 491.
  • the detent unit 400 since the detent unit 400 is located at the second position, the engaging teeth 470 of the detent unit 400 are separated from the fitting teeth 320 of the wire reel 300, and the reel 300 is not affected by the detent unit 400 at this time. It can be rotated in the first direction A1 (see Figure 2), and the string can be released by pulling the tether.
  • the relative position of the engaging portion 460 and the engaging teeth 230 changes, so that the engaging portion 460 engages with the engaging teeth 230.
  • the two positioning blocks 540 are pressed against the two free ends 411 and 421, respectively, and the two free ends 411 and 421 are deformed in the radial direction to make the knob 500 Relative to the detent unit 400, one of the positioning blocks 540 is reset between the free end 411 of the holding portion 410 and the protrusion 491, and the other positioning block 540 is reset between the free end 421 of the holding portion 420 and the protrusion 492 Room.
  • the ability of the ratchet arm 450 to deform in the radial direction after being stressed is smaller than the ability of the holding portions 410 and 420 to deform in the radial direction after being stressed. Therefore, when the knob 500 is turned in the second direction A2, the ratchet arm 450 is not easily deformed and the frictional force between the ratchet teeth 230 and the bite teeth 230 is greater than the pressure that the holding portions 410 and 420 can withstand, so as to avoid the rotation of the detent unit 400 following the knob 500 Therefore, the two free ends 411 and 421 of the second holding portions 410 and 420 can be pressed against the radial deformation, so as to achieve the purpose of the switching position of the detent unit 400.
  • the ratchet arm 450 of the detent unit 400 is in a bent state for a long time, it is easy to be shaped. Therefore, when the detent unit 400 is in the second position and the knob 500 is to be turned in the second direction A2 to switch the detent unit 400 back to the first position, without the assistance of the locking portion 460, the ratchet arm 450 and the bite tooth 230 The friction force is insufficient due to the setting factors.
  • the knob 500 is turned in the second direction A2
  • the ratchet arm 450 and the bite tooth 230 will be continuously loosened, which will cause the second positioning block 540 to be unable to press against the two free ends 411, 421 and deform Resulting in a situation where the switching unit 400 cannot switch positions.
  • the ratchet arm 450 cannot be loosened from the bite tooth 230, and the two positioning blocks 540 can apply force The two free ends 411 and 421 are deformed to achieve the purpose of switching positions.
  • the clamping portion may also be disposed on the ring-shaped body and located below the guide portion, which is not limited thereto.
  • the distal end 452 of the ratchet arm 450 is still engaged with the bite tooth 230 when the detent unit 400 is in the second position
  • the distal end of the ratchet arm can be completely disengaged from the engagement tooth when the detent unit is in the second position, and only the engaging portion can be engaged with the engagement tooth, which is not limited to the above disclosure.
  • the teeth can also be located on the knob.
  • one of the knob or the housing unit may include a plurality of teeth, which is not limited to the disclosure in the drawings.
  • FIG. 9 illustrates a perspective schematic view of a fastening device 100 a according to another embodiment of the invention
  • FIG. 10 illustrates the fastening device of FIG. 9
  • An explosion schematic diagram of 100a FIG. 11 shows another explosion schematic diagram of the fastening device 100a of FIG. 9,
  • FIG. 12 shows a schematic sectional view of the fastening device 100a of FIG. 9,
  • FIG. 13 shows the fastening device of FIG. Another schematic cross-sectional view of 100a.
  • the fastening device 100a includes a housing unit 200a, a knob 500a, a detent unit 400a and a wire reel 300a.
  • the operation principle of the fastening device 100a is similar to that of the fastening device 100 of FIG. 1, and is described as follows.
  • the housing unit 200a includes a ring wall 220a, a housing 270a, a base 210a, a wire coil space 250a, an internal space 240a, a communication space 260a, and a plurality of teeth 230a.
  • the wire coil space 250a is located on the base 210a and the housing 270a
  • the cover is provided on the base 210a to close the coil space 250a.
  • the internal space 240a is located in the housing 270a.
  • the communication space 260a is also located in the housing 270a and below the internal space 240a, and communicates with the internal space 240a.
  • the ring wall 220a is located in the inner space 240a, and the engaging teeth 230a are disposed on the ring wall 220a and face the inner space 240a.
  • the detent unit 400a includes a ring-shaped body (not shown), two driving blocks 490a, three guide parts 430a, three holding parts 410a, three ratchet arms 450a, three clamping parts 460a, and a plurality of engaging teeth 470a, three guide parts 430a, three holding parts 410a and three ratchet arms 450a are protrudingly arranged on the outer surface of the ring-shaped body, two driving blocks 490a are protrudingly arranged on the inner surface of the ring-shaped body, three clamping parts 460a are respectively located on the three ratchet arms 450a, and the clamping part 460a has Double-tooth structure can help to increase the stability of the structure.
  • the knob 500a includes a convex post (not shown), a guide rail 510a, two positioning blocks 540a, and a three pusher block 530a.
  • the guide rail 510a and the three pusher block 530a are disposed on an inner wall of the knob 500a.
  • the relationship between the positioning block 540a is similar to the structural relationship between the convex post 520 and the two positioning blocks 540 in FIG.
  • each pushing block 530a presses against each holding portion 410a to deform, so that the knob 500a can rotate relative to the detent unit 400a, and the guide portion 430a is guided by the guide rail 510a to relatively guide
  • the guide rail 510a rises in the axial direction, and the switching actuator 400a is located at the second position.
  • each pushing block 530a presses against each holding portion 410a to deform, so that the knob 500a can rotate relative to the trigger unit 400a, and the guiding portion 430a is guided by the guiding rail 510a
  • the guide rail 510a descends in the axial direction, and the switching actuator 400a is located at the first position.
  • the fastening device 100a further includes a first transmission gear 610a and a second transmission gear 620a.
  • the first transmission gear 610a includes an upper tooth portion 611a and a lower tooth portion 612a
  • the second transmission gear 620a includes an outer tooth portion 622a and a Internal tooth portion 621a.
  • the wire reel 300a is accommodated in the wire reel space 250a and includes fitting teeth 320a, the second transmission gear 620a is disposed above the wire reel 300a, and the internal tooth portion 621a meshes with the fitting teeth 320a.
  • the first transmission gear 610a is disposed in the communication space 260a
  • the detent unit 400a is disposed in the internal space 240a
  • the upper tooth portion 611a of the first transmission gear 610a meshes with the intermeshing teeth 470a of the detent unit 400a
  • the tooth portion 612a is detachably meshed with the external tooth portion 622a of the second transmission gear 620a.
  • the detent unit 400a is located at the first position, the lower tooth portion 612a of the first transmission gear 610a meshes with the second transmission gear 620a, and when the above condition is satisfied, the distal end of the ratchet arm 450a (Marked) in the first direction A1 is engaged with the bite tooth 230a, the distal end of the ratchet arm 450a is continuously separated from the bite tooth 230a in the second direction A2, and the locking portion 460a is relatively lower than the bite tooth 230a, there is no difference The occlusal teeth 230a mesh.
  • turning the knob 500a in the second direction A2 can drive the latching unit 400a to rotate the wire reel 300a in the first direction A1, and when the knob 500a is not actuated, the distal end of the ratchet arm 450a abuts the bite tooth 230a prevents the reel 300a from rotating, and prevents the tether from being released.
  • the knob 500 raises the guide portion 430a along the guide rail 510a, and switches the detent unit 400a from the first position to the second position. Therefore, as shown in FIG. 13, the detent unit 400a drives the first transmission gear 610a to rise, and the lower tooth portion 612a of the first transmission gear 610a is separated from the second transmission gear 620a. At this time, the reel 300a is not affected by the detent unit 400a , And can rotate in the second direction A2, you can pull the tether to pay off. At this time, since the detent unit 400a rises in the axial direction, the relative position of the catch portion 460a and the engaging teeth 230a changes, so that the catch portion 460a is engaged with the engaging teeth 230a.

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  • Clamps And Clips (AREA)
  • Mechanical Control Devices (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)

Abstract

一种紧固装置（100），其包含一外壳单元（200）、一旋钮（500）、一掣动单元（400）及一线盘（300），旋钮带动掣动单元沿轴向于一第一位置及一第二位置切换，当掣动单元位于第一位置时，掣动单元阻止线盘往一第一方向转动，当掣动单元位于第二位置时，卡部（460）与至少一咬合齿（230）卡合，掣动单元不阻止线盘往第一方向转动，应用上述紧固装置可增加结构可靠度。

Description

紧固装置 技术领域
本发明是有关于一种紧固装置，且尤其是有关一种能收放系线的紧固装置。
背景技术
在日常生活中，常使用绳子及系带等线体来收束物品，最常见的收束手段是利用线体来回穿梭于物品上的孔洞，再以绳结固定，例如绑绳鞋类等。但是此种收束手段容易因为外力因素而导致绳结松脱，不仅必须重绑绳结，也因为无法稳固的收束物品而带来许多的不便。
为了解决此类的问题，有业者发展出简易束线机构，其包含一壳体，一掣动单元及一弹簧，壳体上具有穿孔供线体通过，其透过弹簧与掣动单元之间的作用力使线体被夹在掣动单元及壳体之间而达到紧固效果，按压弹簧改变掣动单元位置即可拉动线体以改变线体长度。但，此种束线机构是透过弹簧的复位力来提供紧固力，仍然容易因为振动或外力因素而使线体松脱，且此种束线机构并无空间容纳线体，因此线体外露也容易造成危险。
是以又有业者发展出另一种可旋转收束并固定系带的扣具，其线体可容置在扣具内部，且透过内部构件的机械力干涉使得线体长度可以被调整，同时调整收束的紧度。然而，此种扣具的结构复杂，使得制造成本提升，同时具有组装及维修困难的问题。
因此，不断有业者针对扣具内部的结构进行调整及改良，皆希望可以在结构简化的前提下，仍保有扣具的紧固能力，并增加结构可靠度以避免寿命减短。
有鉴于此，如何有效改善扣具等紧固装置的结构，遂成相关业者努力的目标。
发明内容
本发明提供一种紧固装置，透过掣动单元的卡部配置，可以增加结构可靠度以避免寿命减短。
依据本发明的一态样的一实施方式提供一种紧固装置，其包含一外壳单元、 一旋钮、一掣动单元及一线盘。外壳单元具有一轴向且包含多个咬合齿。旋钮沿轴向盖设于外壳单元，掣动单元与旋钮耦合且包含一卡部，线盘供一系线卷绕。其中，旋钮带动掣动单元沿轴向于一第一位置及一第二位置切换，当掣动单元位于第一位置时，掣动单元阻止线盘释放系线；当掣动单元位于第二位置时，卡部与至少一咬合齿卡合，掣动单元不阻止线盘释放系线。
借此，透过掣动单元位于第二位置时，卡部与至少一咬合齿卡合的结构关系，有助于掣动单元顺利由第二位置切换为第一位置，并增加结构可靠度。
依据前述的紧固装置的多个实施例，其中掣动单元可还包含一棘臂选择性地与至少一咬合齿卡合，卡部可位于棘臂上且沿外壳单元的一径向朝外凸出。或棘臂可具有一第一高度H 1，卡部具有一第二高度H 2，满足H 2≦(H 1/2)的关系。或棘臂可具有一高度中心线，卡部低于或等高于高度中心线。
依据前述的紧固装置的多个实施例，其中掣动单元可包含一环状本体，棘臂包含一近端及一远端，近端连接环状本体，近端与远端之间具有一第一距离D 1，卡部与近端之间具有一第二距离D 2，满足D 2≦(2D 1/3)的关系。或第一距离D 1与第二距离D 2可满足D 2＝(D 1/2)的关系。
依据本发明的一态样的另一实施方式提供一种紧固装置，其包含一外壳单元、一旋钮、一掣动单元及一线盘。外壳单元具有一轴向。旋钮沿轴向盖设于外壳单元，掣动单元与旋钮耦合且包含一卡部，线盘供一系线耦合。其中，旋钮或外壳单元中其中之一包含多个咬合齿，旋钮转动带动掣动单元沿轴向于一第一位置及一第二位置切换，当掣动单元位于第一位置时，掣动单元阻止线盘释放系线；当掣动单元位于第二位置时，卡部与至少一咬合齿卡合，掣动单元不阻止线盘释放系线。
依据前述的紧固装置的多个实施例，其中掣动单元可还包含一棘臂选择性地与至少一咬合齿卡合，卡部位于棘臂上且沿外壳单元的一径向朝外凸出。或棘臂可具有一第一高度H 1，卡部具有一第二高度H 2，满足H 2≦(H 1/2)的关系。或棘臂可具有一高度中心线，卡部低于或等高于高度中心线。
依据前述的紧固装置的多个实施例，其中掣动单元可包含一环状本体，棘臂包含一近端及一远端，近端连接环状本体，近端与远端之间具有一第一距离D 1，卡部与近端之间具有一第二距离D 2，满足D 2≦(2D 1/3)的关系。或第一距 离D 1与第二距离D 2可满足D 2＝(D 1/2)的关系。
附图说明
图1绘示依照本发明一实施例的一种紧固装置的立体示意图；
图2绘示图1的紧固装置的一爆炸示意图；
图3绘示图1的紧固装置的另一爆炸示意图；
图4绘示图1的紧固装置的一剖视示意图；
图5绘示图1的紧固装置的另一剖视示意图；
图6绘示图4的紧固装置沿割面线6-6的一剖视示意图；
图7绘示图5的紧固装置沿割面线7-7的一剖视示意图；
图8绘示图4的紧固装置沿割面线8-8的一剖视示意图；
图9绘示依照本发明另一实施例的一种紧固装置的立体示意图；
图10绘示图9的紧固装置的一爆炸示意图；
图11绘示图9的紧固装置的另一爆炸示意图；
图12绘示图9的紧固装置的一剖视示意图；以及
图13绘示图9的紧固装置的另一剖视示意图。
具体实施方式
以下将参照附图说明本发明的实施例。为明确说明起见，许多实务上的细节将在以下叙述中一并说明。然而，阅读者应了解到，这些实务上的细节不应用以限制本发明。也就是说，在本发明部分实施例中，这些实务上的细节是非必要的。此外，为简化附图起见，一些已知惯用的结构与元件在附图中将以简单示意的方式绘示；并且重复的元件将可能使用相同的编号或类似的编号表示。
此外，本文中当某一元件(或机构或模块等)“连接”、“设置”或“耦合”于另一元件，可指所述元件是直接连接、直接设置或直接耦合于另一元件，亦可指某一元件是间接连接、间接设置或间接耦合于另一元件，意即，有其他元件介于所述元件及另一元件之间。而当有明示某一元件是“直接连接”、“直接设置”或“直接耦合”于另一元件时，才表示没有其他元件介于所述元件及另一元件之间。而第一、第二、第三等用语只是用来描述不同元件或成分，而 对元件/成分本身并无限制，因此，第一元件/成分亦可改称为第二元件/成分。且本文中的元件/成分/机构/模块的组合非此领域中的一般周知、常规或已知的组合，不能以元件/成分/机构/模块本身是否为已知，来判定其组合关系是否容易被技术领域中的通常知识者轻易完成。
请参阅图1、图2、图3、图4、图5、图6、图7及图8，其中图1绘示依照本发明一实施例的一种紧固装置100的立体示意图，图2绘示图1的紧固装置100的一爆炸示意图，图3绘示图1的紧固装置100的另一爆炸示意图，图4绘示图1的紧固装置100的一剖视示意图，图5绘示图1的紧固装置100的另一剖视示意图，图6绘示图4的紧固装置100沿割面线6-6的一剖视示意图，图7绘示图5的紧固装置100沿割面线7-7的一剖视示意图，图8绘示图4的紧固装置100沿割面线8-8的一剖视示意图。紧固装置100包含一外壳单元200、一旋钮500、一掣动单元400及一线盘300。
外壳单元200具有一轴向I1且包含多个咬合齿230，旋钮500沿轴向I1盖设于外壳单元200，掣动单元400与旋钮500耦合且包含一卡部460，线盘300供一系线(未绘示)卷绕。其中，旋钮500转动带动掣动单元400沿轴向I1于一第一位置及一第二位置切换，当掣动单元400位于第一位置时，掣动单元400阻止线盘300释放系线，即，阻止线盘300往一第一方向A1转动；当掣动单元400位于第二位置时，卡部460与至少一咬合齿230卡合，掣动单元400不阻止线盘300释放系线，即，不阻止线盘300往第一方向A1转动。
借此，透过掣动单元400位于第二位置时，卡部460与至少一咬合齿230卡合的结构关系，有助于掣动单元400顺利由第二位置切换为第一位置，并增加结构可靠度。后面将详述紧固装置100的细部结构。
外壳单元200具有一径向，且外壳单元200还包含一环壁220及一底座210，环壁220围绕一内部空间240，底座210供环壁220设置，且环壁220可以是以卡合的方式设置于底座210。多个咬合齿230位于环壁220且朝向内部空间240，且咬合齿230是位于环壁220的一上端。
线盘300呈中空环状，线盘300位于内部空间240且包含一环状轨道310及多个嵌合齿320，环状轨道310供系线卷绕，而嵌合齿320选择性地与掣动单元400耦合。当线盘300被带动旋转时，系线可随着线盘300往不同方向旋 转收回或释放。
旋钮500包含一导引轨道510、一凸柱520及二定位块540，导引轨道510设于旋钮500的一内壁，凸柱520沿轴向I1朝内部空间240凸出，二定位块540则沿径向对称设罝于凸柱520的外侧。
掣动单元400包含一环状本体440、二保持部410、420、三导引部430、三棘臂450、三卡部460、多个嵌卡齿470、一中心孔(未标示)及二凸块491、492。中心孔位于环状本体440中央，导引部430为自环状本体440朝外突伸的斜齿结构且用以与旋钮500耦合。二保持部410、420自环状本体440向内突出且彼此对称设置，保持部410、420各自包含一自由端411、421，自由端411、421受力后可沿径向移动，外力解除后即可复位。二凸块491、492自环状本体440向内突出，且二凸块491、492与二自由端411、421之间具有间隔。嵌卡齿470位于环状本体440的下方，而能与线盘300的嵌合齿320可选择地啮合。
各棘臂450选择性地与至少一咬合齿230卡合，且各棘臂450包含一远端452及一近端451，近端451连接环状本体440的外面，远端452则用来与咬合齿230可分离地啮合。三个卡部460位于棘臂450上且沿径向朝外凸出，且卡部460具有单齿结构。较佳地，棘臂450具有一第一高度H 1，卡部460具有一第二高度H 2，满足H 2≦(H 1/2)的关系。更佳地，棘臂450具有一高度中心线L1，卡部460低于或等高于高度中心线L1，而在图4的实施例中，卡部460低于高度中心线L1。在此要特别说明的是，上述的第一高度H 1是指棘臂450沿轴向I1的最大高度，因此，若棘臂450各部位的高度不同，则以最大的高度做为第一高度H 1。
如图4所示及图6所示，掣动单元400位于第一位置，掣动单元400的嵌卡齿470与线盘300的嵌合齿320啮合，且在满足上述条件的情况下，棘臂450的远端452(见图2)于第一方向A1(见图2)上啮合于咬合齿230，棘臂450的远端452于一第二方向A2(见图2)上不断地与咬合齿230分离，而卡部460则因位置相对低于咬合齿230，无与咬合齿230啮合。因此，朝第二方向A2转动旋钮500，可带动掣动单元400连动线盘300收线，且旋钮500无作动时，棘臂450的远端452抵顶于咬合齿230以防止线盘300朝第一方向A1转动， 而能防止系线被释放。
又，旋钮500朝第一方向A1转动可带动掣动单元400沿轴向I1上升，以使掣动单元400与线盘300分离。更仔细地说，掣动单元400位于第一位置时，导引部430与旋钮500的导引轨道510啮合，且如图8所示，其中一定位块540位于保持部410的自由端411与凸块491之间，另一定位块540位于保持部420的自由端421与凸块492之间。当旋钮500朝一第一方向A1转动时，掣动单元400受限于棘臂450与咬合齿230的啮合关系而无法一同转动，因此二定位块540分别压抵于二自由端411、421，二自由端411、421沿径向变形而使得旋钮500可相对掣动单元400转动，导引部430受导引轨道510导引以相对导引轨道510沿轴向I1往上升，切换掣动单元400位于第二位置。此时，前述其中一定位块540改位于保持部410的自由端411与凸块492之间，前述另一定位块540改位于保持部420的自由端421与凸块491之间。
如图5所示，由于掣动单元400位于第二位置，掣动单元400的嵌卡齿470与线盘300的嵌合齿320分离，此时线盘300不受掣动单元400影响，而能朝第一方向A1(见图2)转动，拉动系线即可放线。
如图7所示，由于掣动单元400沿轴向I1上升后，卡部460与咬合齿230的相对位置改变，而使得卡部460啮合于咬合齿230。当欲再度固定或收束系带，只要将旋钮500朝第二方向A2转动，二定位块540分别压抵于二自由端411、421，二自由端411、421沿径向变形而使得旋钮500相对掣动单元400转动，使前述其中一定位块540复位于保持部410的自由端411与凸块491之间，前述另一定位块540复位于保持部420的自由端421与凸块492之间即可。
一般而言，在施予相同力量的情况下，棘臂450受力后沿径向变形的能力会小于保持部410、420受力后沿径向变形的能力。因此，朝第二方向A2转动旋钮500时，棘臂450不易变形且其与咬合齿230之间的摩擦力会大于保持部410、420可承受的压力，以避免掣动单元400跟随旋钮500转动，故二保持部410、420的二自由端411、421可被压抵沿径向变形，而达掣动单元400切换位置的目的。
然而，由于掣动单元400的棘臂450长期处于被弯曲的状态，因此容易被 定型。是以，当掣动单元400位于第二位置，且欲朝第二方向A2转动旋钮500切换掣动单元400回复第一位置时，若无卡部460的辅助，则棘臂450与咬合齿230之间会因为定型因素而导致摩擦力不足，朝第二方向A2转动旋钮500时会不断使棘臂450与咬合齿230松脱，进而导致二定位块540无法压抵二自由端411、421变形，最终产生掣动单元400无法切换位置的状况。
当有卡部460的设置时，则因为卡部460会啮合咬合齿230，故朝第二方向A2转动旋钮500时会使棘臂450无法与咬合齿230松脱，二定位块540得以施力于二自由端411、421上使之变形，进而达到切换位置的目的。
较佳地，近端451与远端452之间具有一第一距离D 1，卡部460与近端451之间具有一第二距离D 2，其满足D 2≦(2D 1/3)的关系。更佳地，第一距离D 1与第二距离D 2满足D 2＝(D 1/2)的关系。由棘臂450与咬合齿230卡合时，近端451的变形量小于远端452的变形量，因此，在长时间的使用下，其被定型的影响也较小，故当卡部460的设置符合上述关系时，可有助于增加结构的稳定性。在其他实施例中，卡部亦可以是设置于环状本体且位于导引部的下方，不以此为限。
在此要特别说明的是，在图1至图7的实施例中，虽然棘臂450的远端452在掣动单元400位于第二位置时仍卡合于咬合齿230，但在其他实施例中，棘臂的远端在掣动单元位于第二位置时，可完全脱离与咬合齿的啮合，而仅有卡部啮合于咬合齿即可，不以上述揭露为限。
而在其他实施例中，咬合齿亦可以位于旋钮。换句话说，可以是旋钮或外壳单元中其中之一包含多个咬合齿，不以附图揭露为限。
请参阅图9、图10、图11、图12及图13，其中图9绘示依照本发明另一实施例的一种紧固装置100a的立体示意图，图10绘示图9的紧固装置100a的一爆炸示意图，图11绘示图9的紧固装置100a的另一爆炸示意图，图12绘示图9的紧固装置100a的一剖视示意图，图13绘示图9的紧固装置100a的另一剖视示意图。紧固装置100a包含一外壳单元200a、一旋钮500a、一掣动单元400a及一线盘300a。紧固装置100a的作动原理与图1的紧固装置100类似，说明如下。
外壳单元200a包含一环壁220a、一壳体270a、一底座210a、一线盘空间 250a、一内部空间240a、一连通空间260a及多个咬合齿230a，线盘空间250a位于底座210a，壳体270a盖设于底座210a以封闭线盘空间250a，内部空间240a位于壳体270a，连通空间260a亦位于壳体270a且位于内部空间240a的下方，并与内部空间240a连通。环壁220a位于内部空间240a，咬合齿230a设置于环壁220a上且朝向内部空间240a。
掣动单元400a包含环状本体(未标示)、二带动块490a、三导引部430a、三保持部410a、三棘臂450a、三卡部460a及多个嵌卡齿470a，三导引部430a、三保持部410a及三棘臂450a凸设于环状本体的外面，二带动块490a凸设于环状本体的内面，三卡部460a分别位于三棘臂450a上，且卡部460a具有双齿结构，而能更有助于增加结构的稳定性。
旋钮500a包含一凸柱(未标示)、一导引轨道510a、二定位块540a及三推抵块530a，导引轨道510a及三推抵块530a设于旋钮500a的一内壁，凸柱与二定位块540a的关系和图3的凸柱520及二定位块540的结构关系类似。
当旋钮500a往第一方向A1转动时，各推抵块530a压抵各保持部410a变形，以使旋钮500a可相对掣动单元400a转动，导引部430a受导引轨道510a导引以相对导引轨道510a沿轴向往上升，切换掣动单元400a位于第二位置。反之，当旋钮500a往第二方向A2转动时，各推抵块530a压抵各保持部410a变形，以使旋钮500a可相对掣动单元400a转动，导引部430a受导引轨道510a导引以相对导引轨道510a沿轴向往下降，切换掣动单元400a位于第一位置。
紧固装置100a还包含一第一传动齿轮610a及一第二传动齿轮620a，第一传动齿轮610a包含一上齿部611a及一下齿部612a，第二传动齿轮620a包含一外齿部622a及一内齿部621a。
线盘300a容设于线盘空间250a且包含嵌合齿320a，第二传动齿轮620a设置于线盘300a上方，且内齿部621a与嵌合齿320a啮合。第一传动齿轮610a设置于连通空间260a，掣动单元400a设置于内部空间240a，第一传动齿轮610a的上齿部611a与掣动单元400a的嵌卡齿470a啮合，第一传动齿轮610a的下齿部612a则与第二传动齿轮620a的外齿部622a可分离地啮合。
如图12所示，掣动单元400a位于第一位置，第一传动齿轮610a的下齿部612a与第二传动齿轮620a啮合，且在满足上述条件的情况下，棘臂450a 的远端(未标示)于第一方向A1上啮合于咬合齿230a，棘臂450a的远端于第二方向A2上不断地与咬合齿230a分离，而卡部460a则因位置相对低于咬合齿230a，无与咬合齿230a啮合。因此，朝第二方向A2转动旋钮500a，可带动掣动单元400a连动线盘300a往第一方向A1转动收线，且旋钮500a无作动时，棘臂450a的远端抵顶于咬合齿230a以防止线盘300a转动，而能防止系线被释放。
转动旋钮500使导引部430a沿导引轨道510a上升，而使掣动单元400a由第一位置切换为第二位置。因此，如图13所示，掣动单元400a带动第一传动齿轮610a上升，第一传动齿轮610a的下齿部612a与第二传动齿轮620a分离，此时线盘300a不受掣动单元400a影响，而能朝第二方向A2转动，拉动系线即可放线。此时，由于掣动单元400a沿轴向上升，卡部460a与咬合齿230a的相对位置改变，而使得卡部460a啮合于咬合齿230a。
虽然本发明已以实施例揭露如上，然其并非用以限定本发明，任何熟悉此技艺者，在不脱离本发明的精神和范围内，当可作各种的更动与润饰，因此本发明的保护范围当视所附的权利要求书所界定的范围为准。

Claims (12)

  1. 一种紧固装置，其特征在于，包含：
    一外壳单元，具有一轴向且包含多个咬合齿；
    一旋钮，沿该轴向盖设于该外壳单元；
    一掣动单元，与该旋钮耦合且包含一卡部；以及
    一线盘，供一系线卷绕；
    其中，该旋钮带动该掣动单元沿该轴向于一第一位置及一第二位置切换，当该掣动单元位于该第一位置时，该掣动单元阻止该线盘释放该系线，当该掣动单元位于该第二位置时，该卡部与至少一该咬合齿卡合，该掣动单元不阻止该线盘释放该系线。
  2. 根据权利要求1所述的紧固装置，其特征在于，该掣动单元还包含一棘臂选择性地与至少一该咬合齿卡合，该卡部位于该棘臂上且沿该外壳单元的一径向朝外凸出。
  3. 根据权利要求2所述的紧固装置，其特征在于，该棘臂具有一第一高度H 1，该卡部具有一第二高度H 2，满足H 2≦(H 1/2)的关系。
  4. 根据权利要求2所述的紧固装置，其特征在于，该棘臂具有一高度中心线，该卡部低于或等高于该高度中心线。
  5. 根据权利要求2所述的紧固装置，其特征在于，该掣动单元还包含一环状本体，该棘臂包含一近端及一远端，该近端连接该环状本体，该近端与该远端之间具有一第一距离D 1，该卡部与该近端之间具有一第二距离D 2，满足D 2≦(2D 1/3)的关系。
  6. 根据权利要求5所述的紧固装置，其特征在于，该第一距离D1与该第二距离D 2满足D 2＝(D 1/2)的关系。
  7. 一种紧固装置，其特征在于，包含：
    一外壳单元，其具有一轴向；
    一旋钮，沿该轴向盖设于该外壳单元；
    一掣动单元，与该旋钮耦合且包含一卡部；以及
    一线盘，供一系线耦合；
    其中，该旋钮或该外壳单元中其中之一包含多个咬合齿，该旋钮转动带动该掣动单元沿该轴向于一第一位置及一第二位置切换，当该掣动单元位于该第一位置时，该掣动单元阻止该线盘释放该系线，当该掣动单元位于该第二位置时，该卡部与至少一该咬合齿卡合，该掣动单元不阻止该线盘释放该系线。
  8. 根据权利要求7所述的紧固装置，其特征在于，该掣动单元还包含一棘臂选择性地与至少一该咬合齿卡合，该卡部位于该棘臂上且沿该外壳单元的一径向朝外凸出。
  9. 根据权利要求8所述的紧固装置，其特征在于，该棘臂具有一第一高度H 1，该卡部具有一第二高度H 2，满足H 2≦(H 1/2)的关系。
  10. 根据权利要求9所述的紧固装置，其特征在于，该棘臂具有一高度中心线，该卡部低于或等高于该高度中心线。
  11. 根据权利要求10所述的紧固装置，其特征在于，该掣动单元还包含一环状本体，该棘臂包含一近端及一远端，该近端连接该环状本体，该近端与该远端之间具有一第一距离D 1，该卡部与该近端之间具有一第二距离D 2，满足D 2≦(2D 1/3)的关系。
  12. 根据权利要求11所述的紧固装置，其特征在于，该第一距离D 1与该第二距离D 2满足D 2＝(D 1/2)的关系。
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