TWI719354B - Fastening device - Google Patents

Abstract

The present disclosure provides a fastening device including a case unit, a spool, a driving unit, a knob and a connecting unit. The case unit includes an annular. The annular wall surrounds an inner space. The spool is disposed within the inner space and includes an axel space. The axel space includes a large-diameter segment and a small-diameter segment connecting to the large-diameter segment along an axel direction. The driving unit is located above the spool. The knob is located above the driving unit along the axel direction and is coupled to the driving unit. The connecting unit includes a first part and a second part. The first part connects to the knob. The second part is disposed within the axel space to connect to the first part, and the second part is limited by the large-diameter segment. Therefore, the reliability of the fastening device can be improved.

Description

Fastening device

The present invention relates to a fastening device, and in particular to a fastening device capable of retracting and releasing a tether.

In daily life, cords and ties are often used to condense items. The most common constriction method is to use the cord to shuttle back and forth through the holes in the items, and then fasten them with knots, such as tying ropes and shoes. However, this kind of binding method is prone to loose knots due to external forces. Not only must the knots be re-tied, but it also brings a lot of inconveniences due to the inability to securely bind the objects.

In order to solve such problems, some companies have developed a simple wire harness mechanism, which includes a housing, a detent unit and a spring. The housing has a hole for the wire to pass through, which passes through the spring and the detent unit. The force causes the wire body to be clamped between the detent unit and the housing to achieve a tightening effect. The length of the wire body can be changed by pulling the spring to change the position of the detent unit. However, this kind of wire harness mechanism provides the tightening force through the return force of the spring, and it is still easy to loose the wire body due to vibration or external force factors, and this kind of wire harness mechanism has no space to accommodate the wire body, so the wire body is exposed. It is also easy to cause danger.

Therefore, another industry has developed another type of buckle that can be rotatably constricted and fixed. The thread body can be accommodated inside the buckle and pass through the mechanism of the internal components. The mechanical interference allows the length of the line body to be adjusted, while adjusting the tightness of the bundle. However, the structure of this kind of fastener is complicated, which increases the manufacturing cost and also has the problem of difficulty in assembly and maintenance.

Therefore, manufacturers continue to adjust and improve the internal structure of the buckle, hoping to maintain the fastening ability of the buckle under the premise of simplifying the structure, and increase the reliability of the structure to avoid shortening the life.

In view of this, how to effectively improve the structure of fasteners and other fastening devices has become the goal of the relevant industry.

The invention provides a fastening device, which can increase the reliability of the structure through the structural configuration of the wire reel and the connecting unit.

According to an embodiment of the present invention, a fastening device is provided, which includes a housing unit, a wire reel, a detent unit, a knob, and a connecting unit. The housing unit has a radial direction and an axial direction and includes A ring wall surrounds an internal space. The spool is located in the internal space and includes an axial space. The axial space includes a large-diameter section and a small-diameter section. The small-diameter section is axially connected to the large-diameter section; the detent unit is arranged above the spool in the axial direction. , The detent unit selectively blocks the reel from rotating in a release direction; the knob is arranged above the detent unit in the axial direction, and the knob is coupled to the detent unit. The connecting unit includes a first component group and a second component group, the first component group is connected to the knob, the second component group penetrates the axial space to connect the first component group, and the second component group is restricted by the large diameter section .

In this way, by making the axis space of the spool have a large-diameter section and a small-diameter section, the connecting unit can be limited to the large-diameter section, and the housing unit, the spool, the detent unit and the knob are prevented from loosening during the rotation. De-separation can help increase structural reliability.

According to multiple embodiments of the aforementioned fastening device, the first component group may include a screw, and the second component group may include a connecting sleeve. The connecting sleeve includes a top portion and a barrel portion, the barrel portion is connected to the top portion, and the barrel portion It passes through the small diameter section and is locked by the screw, and the top is limited to the large diameter section. Or the knob may include a protruding column protruding toward the inner space in the axial direction, and the barrel part is engaged with the protruding column, so that the connecting sleeve and the knob can move simultaneously.

According to the plural embodiments of the aforementioned fastening device, the first component group may include a locking sleeve, and the second component group may include a stop ring and a screw, the stop ring is limited to the large diameter section, and the screw passes through The stop ring and the small diameter section are locked to the locking shaft sleeve. Or the locking shaft sleeve may include a lower inserting part, and the stop ring includes an inner inserting groove for inserting with the lower inserting part. Or the knob may include a protruding column protruding toward the inner space in the axial direction, and the locking sleeve includes an upper inserting portion connected to the lower inserting portion, and the upper inserting portion is engaged with the protruding column. Or the locking shaft sleeve may include a lower end surface, and after the screw rod is locked into the locking shaft sleeve, the stop ring is pressed against the lower end surface.

According to the multiple embodiments of the aforementioned fastening device, the first component group may include a locking sleeve, and the second component group may include a screw. The screw includes a head and a rod. The rod is connected to the head, and the rod is connected to the head. The part penetrates the shaft center space to be locked to the locking shaft sleeve, and the head is restricted by the large-diameter section.

According to multiple embodiments of the aforementioned fastening device, the housing unit may further include an inner ring recess, which is recessed at the lower end of the ring wall. Or shell sheet The element may further include a stopper, which is located on the ring wall and protrudes radially toward the inner space, and the wire reel is located below the stopper.

According to another embodiment of one aspect of the present invention, a fastening device is provided, which includes a housing unit, a wire reel, a detent unit, a knob, and a connecting unit. The housing unit has a radial direction and an axial direction. Contains a ring wall that surrounds an internal space. The spool is located in the internal space and includes an axial space. The axial space includes a large-diameter section and a small-diameter section. The small-diameter section is axially connected to the large-diameter section; the detent unit is arranged above the spool in the axial direction. , The detent unit selectively blocks the reel from rotating in a release direction; the knob is arranged above the detent unit in the axial direction and is coupled to the detent unit, the knob rotates in the release direction to drive the detent unit to rise in the axial direction, so that The detent unit is separated from the wire reel. The connecting unit is connected to the knob, and the connecting unit penetrates the axial space and is restricted by the large diameter section.

According to multiple embodiments of the aforementioned fastening device, the connecting unit includes a first component group and a second component group, the first component group is connected to the knob, and the second component group penetrates the axial space to connect to the first component group , And the second component group is limited by the large diameter section. Or the first component group can include a screw, and the second component group can include a connecting sleeve. The connecting sleeve includes a top and a barrel. The barrel is connected to the top. The barrel passes through the small diameter section and is locked by the screw. It is restricted to the large diameter section. Or the knob may include a protruding column protruding toward the inner space in the axial direction, and the barrel part is engaged with the protruding column, so that the connecting sleeve and the knob can move simultaneously.

According to the plural embodiments of the aforementioned fastening device, the first component group may include a locking sleeve, and the second component group may include a stop ring and a screw, the stop ring is limited to the large diameter section, and the screw passes through The stop ring and the small diameter section are locked to the locking shaft sleeve. Or the locking sleeve can include a lower fitting part, and the stop ring includes a The inner fitting groove is fitted with the lower fitting part. Or the knob may include a protruding column protruding toward the inner space in the axial direction, and the locking sleeve includes an upper inserting portion connected to the lower inserting portion, and the upper inserting portion is engaged with the protruding column. Or the locking shaft sleeve may include a lower end surface, and after the screw rod is locked into the locking shaft sleeve, the stop ring is pressed against the lower end surface.

According to the multiple embodiments of the aforementioned fastening device, the first component group may include a locking sleeve, and the second component group may include a screw. The screw includes a head and a rod. The rod is connected to the head, and the rod is connected to the head. The part penetrates the shaft center space to be locked to the locking shaft sleeve, and the head is restricted by the large-diameter section. Or the housing unit may further include a stopper, which is located on the ring wall and protrudes radially toward the inner space, and the wire reel is located below the stopper.

100‧‧‧Fastening device

200‧‧‧Shell unit

210‧‧‧Base

220‧‧‧ring wall

230‧‧‧bite teeth

240‧‧‧Internal space

250‧‧‧stop

260‧‧‧Inner ring concave

300‧‧‧Spool

310‧‧‧Circular track

320‧‧‧Interlocking teeth

330‧‧‧Lower opening

340‧‧‧Axial space

341‧‧‧ Trail section

342‧‧‧Large diameter section

350‧‧‧Inner peripheral surface

351‧‧‧Extended Area

352‧‧‧Straight Area

620‧‧‧Connecting sleeve

621‧‧‧tube

622‧‧‧Top

100a‧‧‧fastening device

220a‧‧‧ring wall

300a‧‧‧Spool

400a‧‧‧Motion unit

500a‧‧‧Knob

600a‧‧‧Connecting unit

610a‧‧‧Locking sleeve

611a‧‧‧Lower fitting part

612a‧‧‧Upper fitting part

620a‧‧‧Second component group

621a‧‧‧stop ring

6211a‧‧‧Inner fitting groove

6212a‧‧‧Body

6213a‧‧‧Bottom

622a‧‧‧Screw

360‧‧‧Sheung Wan Department

370‧‧‧Lower Ring

380‧‧‧Hollow shaft column

400‧‧‧Motion unit

410‧‧‧The first holding part

411, 421‧‧‧ free end

420‧‧‧Second holding part

430‧‧‧Guiding Department

440‧‧‧Ring body

450‧‧‧Spindle Arm

451‧‧‧Proximal

452‧‧‧Remote

460‧‧‧Card Department

470‧‧‧Clamping teeth

480‧‧‧Center hole

491, 492‧‧‧ bump

500‧‧‧Knob

510‧‧‧Guide Track

520‧‧‧Protrusion

530‧‧‧Through hole

540‧‧‧Positioning block

600‧‧‧Connecting unit

610‧‧‧Screw

100b‧‧‧fastening device

220b‧‧‧ring wall

300b‧‧‧Spool

400b‧‧‧Motion unit

500b‧‧‧Knob

600b‧‧‧Connecting unit

610b‧‧‧Locking sleeve

611b‧‧‧Lower end surface

620b‧‧‧Second component group

621b‧‧‧stop ring

622b‧‧‧Screw

100c‧‧‧fastening device

220c‧‧‧ring wall

300c‧‧‧Spool

400c‧‧‧Motion unit

500c‧‧‧Knob

600c‧‧‧Connecting unit

610c‧‧‧Locking sleeve

620c‧‧‧Screw

621c‧‧‧Pole

622c‧‧‧Head

A1‧‧‧Release direction

A2‧‧‧Tightening direction

I1‧‧‧Axial

Fig. 1 is a perspective schematic diagram of a fastening device according to a first embodiment of the present invention; Fig. 2 is an exploded schematic diagram of the fastening device of Fig. 1; Fig. 3 shows the fastening of Fig. 1 Another exploded schematic diagram of the device; Fig. 4 shows a schematic cross-sectional view of the fastening device of Fig. 1; Fig. 5 shows another schematic cross-sectional view of the fastening device of Fig. 1; Fig. 6 shows the following A three-dimensional exploded schematic view of a fastening device according to a second embodiment of the present invention; Fig. 7 shows a schematic cross-sectional view of the fastening device of Fig. 6; Fig. 8 shows a third embodiment according to the present invention The three-dimensional exploded schematic diagram of the fastening device; Figure 9 shows a schematic cross-sectional view of the fastening device of Figure 8; Figure 10 shows a three-dimensional exploded schematic view of a fastening device according to a fourth embodiment of the present invention; and Figure 11 shows Figure 10 A schematic cross-sectional view of the fastening device.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. For the sake of clarity, many practical details will be explained in the following description. However, the reader should understand that these practical details should not be used to limit the present invention. That is to say, in some embodiments of the present invention, these practical details are unnecessary. In addition, for the sake of simplification of the drawings, some conventionally used structures and elements will be drawn in a simple schematic manner in the drawings; and repeated elements may be represented by the same or similar numbers.

In addition, when a component (or mechanism or module, etc.) is “connected”, “configured” or “coupled” to another component in this document, it can mean that the component is directly connected, directly disposed, or directly coupled to another component It can also mean that an element is indirectly connected, indirectly disposed, or indirectly coupled to another element, that is, there are other elements between the element and another element. When it is clearly stated that a certain element is "directly connected", "directly arranged" or "directly coupled" to another element, it means that there is no other element between the element and another element. The terms first, second, third, etc. are only used to describe different elements or components, and there are no restrictions on the elements/components themselves. Therefore, the first element/component can also be referred to as the second element/component. And the combination of components/components/mechanisms/modules in this article is not a combination of general well-known, conventional or conventional in this field, and cannot be combined with components/ Whether the components/organizations/modules themselves are known to determine whether the combination relationship can be easily completed by ordinary knowledge in the technical field.

Please refer to FIG. 1, FIG. 2, FIG. 3, FIG. 4, and FIG. 5. FIG. 1 is a perspective view of a fastening device 100 according to a first embodiment of the present invention, and FIG. 2 is Shows an exploded schematic view of the fastening device 100 in Fig. 1, Fig. 3 shows another exploded schematic view of the fastening device 100 in Fig. 1, and Fig. 4 shows a cross-sectional view of the fastening device 100 in Fig. 1 Schematic diagram, FIG. 5 shows another cross-sectional schematic diagram of the fastening device 100 of FIG. 1. The fastening device 100 includes a housing unit 200, a wire reel 300, a detent unit 400, a knob 500 and a connection unit 600.

The housing unit 200 has a radial direction (not shown) and an axial direction I1 and includes a ring wall 220 that surrounds an inner space 240. The bobbin 300 is located in the inner space 240 and includes an axial space 340. The axial space 340 includes a large diameter section 342 and a small diameter section 341. The small diameter section 341 is connected to the large diameter section 342 along the axial direction I1; the detent unit 400 is arranged above the bobbin 300 along the axial direction I1, the detent unit 400 selectively blocks the rotation of the bobbin 300 in a release direction A1; the knob 500 is arranged above the detent unit 400 along the axial direction I1, and the knob 500 is coupled to棣动unit 400. The connecting unit 600 is connected to the knob 500, and the connecting unit 600 penetrates the axial space 340 and is restricted by the large diameter section 342.

Thereby, by allowing the axial space 340 of the wire reel 300 to have a large-diameter section 342 and a small-diameter section 341, the connecting unit 600 can be confined to the large-diameter section 342, so as to avoid the housing unit 200, the wire reel 300, and the movement The unit 400 and the knob 500 are loosened and separated during the rotation, which can help increase the reliability of the structure. The detailed structure of the fastening device 100 will be described in detail later.

The housing unit 200 may further include a stop part 250, the stop part 250 is located on the ring wall 220 and protrudes radially toward the inner space 240, and the wire reel 300 is located below the stop part 250. The housing unit 200 further includes a base 210, a plurality of occlusal teeth 230, and an inner ring recess 260. The base 210 is provided with the ring wall 220, and the ring wall 220 can be arranged on the base 210 in a snap-fit manner. The plurality of occlusal teeth 230 are located on the ring wall 220 and face the inner space 240. The occlusal teeth 230 are located at an upper end of the ring wall 220. The inner ring recess 260 is recessed at the lower end of the ring wall 220. The stop portion 250 has a convex ring structure and is adjacent to Bite the teeth 230. In other words, the inner ring recess 260 and the stop portion 250 can be formed through the change of the inner diameter of the ring wall 220.

The bobbin 300 includes a hollow shaft 380, an upper ring portion 360 and a lower ring portion 370. The upper ring portion 360 and the lower ring portion 370 respectively protrude radially outward from the hollow shaft column 380, and the upper ring portion 360 is located along the axial direction I1. Above the lower ring portion 370, an annular track 310 can be formed between the upper ring portion 360 and the lower ring portion 370, and the annular track 310 can be wound by a tie wire (not shown). The bobbin 300 may further include a plurality of inserting teeth 320 located above the upper ring portion 360 along the axial direction I1, and an inner peripheral surface 350 of the hollow shaft 380 surrounds the shaft center space 340, which can be changed by the inner diameter of the hollow shaft 380 A large-diameter section 342 and a small-diameter section 341 that are connected to each other are formed, and the large-diameter section 342 is located below the small-diameter section 341. The inner peripheral surface 350 of the hollow shaft column 380 may include an outer expansion area 351 and a straight area 352. Both the outer expansion area 351 and the straight area 352 are located in the large-diameter section 342. The bobbin 300 may further include a lower opening 330 to communicate with the shaft center space. 340.

The detent unit 400 includes a ring-shaped body 440, a first holding portion 410, a second holding portion 420, three guiding portions 430, three spur arms 450, three clamping portions 460, a plurality of clamping teeth 470, and a central hole 480 and two bumps 491, 492. The central hole 480 is located in the center of the ring body 440, and the guiding portion 430 is a helical tooth structure protruding outward from the ring body 440 and is used for coupling with the knob 500. The first holding portion 410 and the second holding portion 420 protrude inward from the annular body 440, and the first holding portion 410 and the second holding portion 420 each include a free end 411, 421, the free end 411, 421 can be Move in the radial direction and reset after the external force is relieved. The two protrusions 491 and 492 protrude inwardly from the annular body 440, and there is an interval between the two protrusions 491 and 492 and the two free ends 411 and 421. The ratchet arm 450 includes a distal end 452 and a proximal end 451, the proximal end 451 is connected to the outer surface of the ring body 440, and the distal end 452 is used to detachably engage with the bite tooth 230. The three clamping parts 460 are respectively located on the three spine arms 450. The cogging teeth 470 are located below the annular body 440 and can be selectively engaged with the engaging teeth 320 of the wire reel 300.

The knob 500 includes a guide rail 510, a protrusion 520, a through hole 530, and two positioning blocks 540. The guide rail 510 is provided on an inner wall of the knob 500, and the protrusion 520 protrudes toward the inner space 240 along the axial direction I1. The through hole 530 penetrates the convex column 520, and the two positioning blocks 540 are symmetrically arranged on the outer side of the convex column 520 along the radial direction. It should be noted here that only one positioning block 540 can be seen in Figure 3 due to the viewing angle. However, the reader can know that there is another positioning block 540 on the side that is not visible from the viewing angle.

The connecting unit 600 includes a first component group (not labeled) and a second component group (not labeled). The first component group is connected to the knob 500, and the second component group penetrates through the axial space 340 to connect to the first component group. And the second component group is restricted by the large diameter section 342. In the first embodiment, the first component group of the connecting unit 600 includes a screw 610, and the second component group includes a connecting sleeve 620, which is connected to The sleeve 620 includes a top portion 622 and a barrel portion 621, the barrel portion 621 is connected to the top portion 622, the barrel portion 621 passes through the small diameter section 341 and is locked by the screw 610, and the top portion 622 is limited to the large diameter section 342.

More specifically, when the bobbin 300 is inserted into the internal space 240 from below the ring wall 220, as shown in Figure 4, the upper ring portion 360 and the lower ring portion 370 are respectively restricted by the stop portion 250 and the inner ring recess 260 Therefore, the wire reel 300 cannot be detached from above the ring wall 220. The guiding part 430 (see Fig. 3) is coupled to the guiding rail 510 to connect the knob 500 and the detent unit 400, and the protrusion 520 of the knob 500 protrudes into the central hole 480 of the detent unit 400 (see Fig. 2) .

The connecting sleeve 620 can be inserted into the axial space 340 from the bottom to the top through the lower opening 330 of the wire reel 300 (see Figure 3). Due to the diameter of the small diameter section 341, the large diameter section 342, the top 622 and the barrel 621, The cylinder 621 can pass through the small diameter section 341, and the top 622 is left in the large diameter section 342. At this time, as long as the screw 610 is locked into the barrel 621, the knob 500 and the detent unit 400 can be combined with the wire reel 300. And because of the stopper portion 250, after the screw 610 is locked into the barrel portion 621, the knob 500, the detent unit 400, the wire reel 300, and the ring wall 220 cannot be separated, and the assembly can be completed. In other embodiments, the stopper may not be provided, but the occlusal teeth protrude toward the inner space to prevent the wire reel from escaping from the ring wall; or the stopper and the inner ring are recessed on the ring wall. , Not limited to the above disclosure.

Preferably, the barrel 621 can be fitted with the protruding column 520 so that the connecting sleeve 620 and the knob 500 can move simultaneously. Wherein, the shape of the outer wall of the cylindrical portion 621 can be matched with the inner wall of the through hole 530, so that the cylindrical portion 621 can be fitted into the boss 520. Preferably, the outer wall section of the cylindrical portion 621 and the inner wall section of the through hole 530 are both Non-round shape. When the tether is pulled to rotate the spool 300 in the release direction A1, the spool 300 may rub against the second component group. If the barrel portion 621 of the second component group is fitted with the boss 520, it can help prevent the second component The group is affected by friction to generate rotation, thereby avoiding the locking separation between it and the first component group.

As shown in Figure 4, the detent unit 400 is located at the first position, the cogging teeth 470 of the detent unit 400 engages with the engaging teeth 320 of the wire reel 300, and the distal end 452 of the ratchet arm 450 (see Figure 2) Engaged with the occlusal tooth 230 in the release direction A1 (see Figure 2), the distal end 452 of the ratchet arm 450 is continuously separated from the occlusal tooth 230 in a tightening direction A2 (see Figure 2), and the clamping portion 460 is Because the position is relatively lower than the occlusal teeth 230, there is no meshing with the occlusal teeth 230. Therefore, turning the knob 500 in the tightening direction A2 can drive the detent unit 400 to link the wire reel 300 to take up the wire, and when the knob 500 is inactive, the distal end 452 of the ratchet arm 450 abuts against the bite tooth 230 to prevent the wire reel 300 from facing Rotation in the release direction A1 can prevent the tether from being released.

Furthermore, rotating the knob 500 in a release direction A1 can drive the detent unit 400 to rise along the axial direction I1, so that the detent unit 400 is separated from the wire reel 300. More specifically, when the detent unit 400 is in the first position, the guiding portion 430 is engaged with the guiding track 510 of the knob 500, and one of the positioning blocks 540 is located between the free end 411 of the first holding portion 410 and the protrusion 491 , The other positioning block 540 is located between the free end 421 of the second holding portion 420 and the protrusion 492. When the knob 500 rotates in the release direction A1, the detent unit 400 cannot rotate together due to the meshing relationship between the ratchet arm 450 and the bite tooth 230. Therefore, the two positioning blocks 540 are pressed against the two free ends 411 and 421, respectively. The 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 and can move upward in the axial direction I1 relative to the guide rail 510 Rise to switch the detent unit 400 to the second position. At this time, one of the aforementioned positioning blocks 540 is changed to be located between the free end 411 of the first holding portion 410 and the protrusion 492, and the aforementioned other positioning block 540 is changed to be located between the free end 421 of the second holding portion 420 and the protrusion 491. .

Therefore, as shown in Figure 5, since the detent unit 400 is in the second position, the interlocking teeth 470 of the detent unit 400 are separated from the engaging teeth 320 of the wire reel 300, and the wire reel 300 is not affected by the detent unit 400 at this time. Influence, and can rotate in the release direction A1, pull the tie line to release the line.

Please refer to FIGS. 6 and 7, where FIG. 6 shows a three-dimensional exploded view of a fastening device 100a according to a second embodiment of the present invention, and FIG. 7 shows an exploded view of the fastening device 100a in FIG. 6 Schematic cross-sectional view. The fastening device 100a includes a housing unit (not labeled), a wire reel 300a, a detent unit 400a, a knob 500a, and a connecting unit 600a. The structure and relationship of the housing unit, the wire reel 300a, the detent unit 400a and the knob 500a It is similar to the housing unit 200, the wire reel 300, the detent unit 400 and the knob 500 of the first embodiment, but the structure of the connection unit 600a is different from the connection unit 600 of the first embodiment.

The connecting unit 600a includes a first component group and a second component group 620a. The first component group includes a locking sleeve 610a. The second component group 620a includes a stop ring 621a and a screw 622a. The stop ring 621a is limited to a large In the diameter section (not marked), the screw 622a passes through the stop ring 621a and the small diameter section (not marked) is locked to the locking sleeve 610a. The locking sleeve 610a includes a lower fitting portion 611a, the stop ring 621a includes an inner fitting groove 6211a, and the inner fitting groove 6211a is fitted with the lower fitting portion 611a. Knob 500a includes a boss (not marked) along the axis Protruding toward the inner space (not labeled), the locking sleeve 610a further includes an upper fitting portion 612a connected to the lower fitting portion 611a, and the upper fitting portion 612a is fitted with the protruding post.

In detail, the stop ring 621a further includes a bottom portion 6213a and a body portion 6212a. The body portion 6212a is connected to the bottom portion 6213a, and the inner fitting groove 6211a is located on the body portion 6212a. The shape of the upper fitting portion 612a of the locking sleeve 610a is matched with the through hole (not labeled) located in the boss, and the shape of the lower fitting portion 611a is matched with the inner fitting groove 6211a. Therefore, when the locking sleeve 610a passes through When entering the through hole, the upper fitting portion 612a is fitted with the protruding post, and the lower fitting portion 611a is exposed on the protruding post and protrudes into the small diameter section.

In addition, as shown in Figure 7, the body 6212a of the stop ring 621a enters the small-diameter section, the inner fitting groove 6211a is fitted with the lower fitting section 611a, and the bottom 6213a is left in the large-diameter section and restricted by the large-diameter section. , And the screw 622a can be locked into the locking sleeve 610a from bottom to top in the axial direction to complete the combination of the knob 500a, the detent unit 400a, the wire reel 300a and the ring wall 220a. When the spool 300a rotates in the release direction due to the pulling of the tether, the spool 300a may rub against the second component group 620a, because the stop ring 621a of the second component group 620a fits with the boss through the locking sleeve 610a, This helps prevent the second component group 620a from rotating due to friction, thereby avoiding the locking separation between it and the first component group.

Please refer to Figures 8 and 9, where Figure 8 shows a three-dimensional exploded view of a fastening device 100b according to a third embodiment of the present invention, and Figure 9 shows a part of the fastening device 100b of Figure 8 Schematic cross-sectional view. The fastening device 100b includes a housing unit (not labeled), a wire reel 300b, a detent unit 400b, a knob 500b, and a connecting unit 600b. The housing unit, The structure and relationship of the wire reel 300b, the detent unit 400b, and the knob 500b are similar to those of the housing unit, wire reel 300a, detent unit 400a, and knob 500a of the second embodiment in FIG. 6, but the structure of the connecting unit 600b is similar to that of the second embodiment. The connection unit 600a of the example is different.

More specifically, the first component group of the connecting unit 600b includes a locking sleeve 610b, and the second component group 620b includes a stop ring 621b and a screw 622b. The structure of the locking sleeve 610b is similar to that of the second embodiment. The locking sleeve 610a is the same, but it can also not include the lower fitting part, but lengthen the length of the upper fitting part in the axial direction so that it protrudes into the small diameter section, including but not limited to the above disclosure. In the third embodiment, the stop ring 621b has an annular structure, and the locking sleeve 610b includes a lower end surface 611b. After the screw 622b is locked into the locking sleeve 610b, the stop ring 621b can abut the lower end surface 611b. This completes the assembly of the knob 500b, the detent unit 400b, the wire reel 300b and the ring wall 220b. When the wire reel 300b rotates in the release direction due to the pulling of the tether, the wire reel 300b may rub against the second component group 620b, because the stop ring 621b is pressed against the lower end surface 611b by the screw 622b, the stop ring 621b, the screw The frictional force between the 622b and the lower end surface 611b is greater than the frictional force of the bobbin 300b friction stop ring 621b, which can help prevent the second component group 620b from rotating due to friction, thereby avoiding the friction between the second component group 620b and the first component group. Locked and separated.

Please refer to Figures 10 and 11, where Figure 10 shows a perspective exploded view of a fastening device 100c according to a fourth embodiment of the present invention, and Figure 11 shows a part of the fastening device 100c in Figure 10 Schematic cross-sectional view.

The fastening device 100c includes a housing unit (not shown), a wire reel 300c, a detent unit 400c, a knob 500c, and a connecting unit 600c, the structure and relationship of the housing unit, the wire reel 300c, the detent unit 400c, and the knob 500c are similar to those of the housing unit, the reel 300b, the detent unit 400b, and the knob 500b of the third embodiment, but the structure of the connection unit 600c is similar to that of the first embodiment. The connection unit 600b of the 3 embodiments is different.

More specifically, the first component group of the connecting unit 600c includes a locking sleeve 610c, and the second component group includes a screw 620c. The screw 620c includes a head 622c and a rod 621c. The rod 621c is connected to the head 622c. The rod 621c penetrates through the axial space to be locked to the locking sleeve 610c, and the head 622c is restricted by the large-diameter section. In terms of structural configuration, the diameter of the head 622c can be larger than the diameter of the small diameter section, and the diameter of the screw 620c can be smaller than the diameter of the large diameter section, and the screw 620c can be confined to the large diameter section to complete the knob 500c and the detent unit Assembly of 400c, bobbin 300c and ring wall 220c. When the tie wire is pulled to rotate the wire reel 300c in the release direction, the wire reel 300c may rub against the second component group. When the screw 620c is locked, the locking force between the screw 620c and the locking sleeve 610c can be strengthened, for example The method of widening the thread, dispensing, etc. can be used to make the locking force between the screw 620c and the locking sleeve 610c greater than the friction force of the spool 300c against the screw 620c, which can help prevent the second component group from being affected by friction Rotation is generated, thereby avoiding the locking separation between it and the first component group.

In other embodiments, the connecting unit may also have a convex column structure, which may be integrally connected to the knob and protrude toward the axial space, or be fixed to the knob by gluing. The connecting unit may include a lower flange. The upper end of the connecting unit is connected to the knob and the lower flange is limited to the large diameter section to complete the assembly of the knob, the detent unit, the wire reel and the ring wall.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone familiar with the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection of the present invention The scope shall be subject to the definition of the attached patent application scope.

100‧‧‧Fastening device

200‧‧‧Shell unit

210‧‧‧Base

220‧‧‧ring wall

230‧‧‧bite teeth

250‧‧‧stop

260‧‧‧Inner ring concave

300‧‧‧Spool

310‧‧‧Circular track

320‧‧‧Interlocking teeth

340‧‧‧Axial space

341‧‧‧ Trail section

370‧‧‧Lower Ring

380‧‧‧Hollow shaft column

400‧‧‧Motion unit

440‧‧‧Ring body

450‧‧‧Spindle Arm

460‧‧‧Card Department

470‧‧‧Clamping teeth

500‧‧‧Knob

510‧‧‧Guide Track

520‧‧‧Protrusion

530‧‧‧Through hole

600‧‧‧Connecting unit

342‧‧‧Large diameter section

350‧‧‧Inner peripheral surface

351‧‧‧Extended Area

352‧‧‧Straight Area

360‧‧‧Sheung Wan Department

610‧‧‧Screw

620‧‧‧Connecting sleeve

621‧‧‧tube

622‧‧‧Top

I1‧‧‧Axial

Claims (10)

A fastening device includes: a housing unit, which has a radial direction and an axial direction, and includes: a ring wall surrounding an inner space; and an inner ring recess, which is recessed at the lower end of the ring wall; and a wire reel, Located in the internal space and including an axial space, the axial space includes a large-diameter section and a small-diameter section, the small-diameter section is connected to the large-diameter section along the axial direction; a detent unit, along the axial direction Is arranged above the spool, the detent unit selectively blocks the spool from rotating in a release direction; a knob is arranged above the detent unit along the axial direction and is coupled to the detent unit, the knob faces The release direction is rotated to drive the detent unit to rise in the axial direction, so that the detent unit is separated from the bobbin; and a connecting unit connected to the knob, and the connecting unit penetrates the axial space and directly Limited by the large diameter section. As for the fastening device described in claim 1, wherein the connecting unit includes: a first component group connected to the knob; and a second component group passing through the axial space to connect the first component Group, and the second component group is restricted by the large-diameter section. As for the fastening device described in claim 2, wherein the first component group includes a screw, the second component group includes a connecting sleeve, the connecting sleeve includes a top portion and a barrel portion, and the barrel portion The top is connected, the barrel passes through the small diameter section and is locked by the screw rod, and the top is limited to the large diameter section. As for the fastening device described in item 3 of the scope of patent application, wherein the knob includes a protruding column protruding toward the inner space along the axial direction, and the cylindrical portion is fitted with the protruding column so that the connecting sleeve and the The knobs move at the same time. For the fastening device described in item 2 of the scope of patent application, wherein the first component group includes a locking sleeve, the second component group includes a stop ring and a screw, and the stop ring is limited to the large diameter Section, the screw rod passes through the stop ring and the small-diameter section and is locked to the locking sleeve. The fastening device according to item 5 of the scope of patent application, wherein the locking sleeve includes a lower fitting portion, the stop ring includes an inner fitting groove, and the inner fitting groove is fitted with the lower fitting portion . The fastening device described in item 6 of the scope of patent application, wherein the knob includes a protruding column protruding toward the inner space along the axial direction, and the locking The shaft sleeve includes an upper fitting part connected to the lower fitting part, and the upper fitting part is fitted with the protruding post. For the fastening device described in item 5 of the scope of patent application, the locking sleeve includes a lower end surface, and after the screw is locked into the locking sleeve, the stop ring is pressed against the lower end surface. As for the fastening device described in claim 2, wherein the first component group includes a locking sleeve, the second component group includes a screw, the screw includes a head and a rod, the rod The head is connected, the rod part penetrates the shaft center space to be locked to the locking sleeve, and the head is restricted by the large-diameter section. As for the fastening device described in claim 1, wherein the housing unit further includes: a stopper located on the ring wall and protruding toward the inner space along the radial direction; wherein, the wire reel is located at the stop Below the stop.

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