CN111114877B - Fastening device - Google Patents

Abstract

The invention provides a fastening device, which comprises a casing unit and a wire disc, the casing unit includes a side wall, an upper opening and a lower opening, the side wall surrounds to form an accommodating space, the upper opening communicates with the accommodating space, and the lower opening On the contrary, the upper opening is connected to the accommodating space, and the spool is located in the accommodating space. Wherein, the spool is limited by the side wall, and the side wall prevents the spool from escaping from the accommodating space from the upper opening. Thereby, the spool can be installed into the housing unit from bottom to top, and the spool can be prevented from being separated from the housing unit from the upper opening, which facilitates easy assembly and improves the structural stability of the fastening device.

Description

Fastening device

technical field

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

Background technique

In daily life, ropes and laces are often used to bind objects. The most common binding method is to use the threads to shuttle back and forth through the holes on the objects, and then fix them with knots, such as tying shoes and so on. However, this kind of binding method is easy to cause the knot to loosen due to external force, which not only has to tie the knot again, but also brings a lot of inconvenience because the object cannot be stably bound.

In order to solve such problems, some manufacturers have developed a simple wire harnessing mechanism, which includes a casing, a detent unit and a spring. The casing has a perforated hole for the wire body to pass through, which passes through the space between the spring and the detent unit. The acting force of the wire body is clamped between the detent unit and the casing to achieve the fastening effect, and the wire body can be pulled to change the length of the wire body by pressing the spring to change the position of the detent unit. However, this kind of wire harnessing mechanism provides the tightening force through the restoring force of the spring, and it is still easy to loosen the wire body due to vibration or external force, and this kind of wire harnessing mechanism has no space to accommodate the wire body, so the wire body Exposure can also be dangerous.

Therefore, another industry has developed another buckle that can be rotatably collected and fixed. The wire can be accommodated inside the buckle, and the length of the wire can be adjusted through the mechanical interference of the internal components. At the same time adjust the tightness of the bandha. However, the structure of such a fastener is complicated, which increases the manufacturing cost, and also has the problems of difficulty in assembly and maintenance.

Therefore, there are constantly adjustments and improvements to the internal structure of the fastener, hoping to maintain the fastening capability of the fastener and increase the structural stability under the premise of simplifying the structure.

In view of this, how to effectively improve the structure of fastening devices such as buckles has become the goal of the relevant industry.

SUMMARY OF THE INVENTION

The present invention provides a fastening device, which can prevent the wire reel from being separated from the casing unit through the upper opening through the structural configuration.

An embodiment according to an aspect of the present invention provides a fastening device, which includes a housing unit and a wire disc, the housing unit includes a side wall, an upper opening and a lower opening, and the side wall surrounds to form an accommodating space, The side wall includes an inner peripheral surface and a plurality of protruding teeth protruding toward the accommodating space, the upper opening communicates with the accommodating space, the lower opening is opposite to the upper opening and communicates with the accommodating space, and the spool is located in the accommodating space. The diameter of a virtual circle formed by the connecting line of the tooth tips of the protruding teeth is smaller than the diameter of the inner peripheral surface, and the lower edge of the protruding teeth prevents the spool from escaping from the accommodating space from the upper opening.

In this way, the spool can be allowed to be loaded into the housing unit from bottom to top, and the separation of the spool from the housing unit from the upper opening can be avoided, which can facilitate easy assembly and increase the structural stability of the fastening device. .

According to various embodiments of the aforementioned fastening device, the side wall may include an inner ring groove, the inner ring groove includes a ring top surface, the spool includes a lower ring portion, and the lower ring portion is correspondingly accommodated in the inner ring The groove is formed, and the top surface of the ring blocks the spool from the upper opening from the accommodating space.

According to various embodiments of the aforementioned fastening device, it may further include a knob and a detent unit, the knob cover is disposed on the housing unit, the detent unit is located in the accommodating space and coupled to the knob, and the detent unit includes a first drive part; wherein, the reel includes a second drive part corresponding to the first drive part, the knob drives the detent unit to switch between a first position and a second position along an axis, when the knob is at the first position, the first The driving part is coupled to the second driving part, the detent unit corresponds to the protruding teeth and is engaged with at least one protruding tooth to prevent the spool from rotating in a first direction, and the knob is rotated in a second direction opposite to the first direction, and the detent The moving unit is separated from the at least one protruding tooth and does not prevent the spool from rotating in the second direction; when the knob is at the second position, the detent unit does not prevent the spool from rotating in the first direction.

According to various embodiments of the aforementioned fastening device, it may further include at least one engaging claw protruding downward, the aforementioned at least one engaging claw is disposed on a main body of the detent unit or an inner top surface of the knob, and the spool includes An engaging portion, when the knob is at the first position, at least one engaging claw is coupled to the engaging portion, and when the knob is at the second position, at least one engaging claw is separated from the engaging portion. In addition, the aforementioned fastening device may further include two protruding arms and two limiting protrusions, the two protruding arms are symmetrically arranged on a main body of the detent unit or an inner top surface of the knob, and the two protruding arms protrude downward respectively, each limiting The position protrusion is located at a distal end of each convex arm, and the spool also includes a middle through hole for the two convex arms and the two limit protrusions to pass through. When the knob is switched between the first position and the second position, The two protruding arms are displaced relative to the middle through hole in the axial direction, and the two limit protrusions are limited by the middle through hole.

Another embodiment according to an aspect of the present invention provides a fastening device, which includes a casing unit, a wire disc, a knob and a detent unit, the casing unit includes a side wall, an upper opening and a lower opening, The side wall surrounds to form an accommodating space. The side wall includes an inner peripheral surface and a plurality of protruding teeth protruding toward the accommodating space. accommodation space. The knob cover is arranged on the housing unit, the detent unit is located in the accommodating space and above the wire reel, and the detent unit is coupled to the knob. The diameter of a virtual circle formed by the connecting line of the tooth tips of the protruding teeth is smaller than the diameter of the inner peripheral surface, the lower edge of the protruding teeth blocks the spool from the upper opening from the accommodating space, and the knob drives the detent unit in an axial direction When switching between a first position and a second position, the relative position of the spool and the side wall is fixed.

According to various embodiments of the aforementioned fastening device, the side wall may include an inner ring groove, the inner ring groove includes a ring top surface, the spool includes a lower ring portion, and the lower ring portion is correspondingly accommodated in the inner ring The groove is formed, and the top surface of the ring blocks the spool from the upper opening from the accommodating space.

According to various embodiments of the aforementioned fastening device, at least one engaging claw protruding downward, the aforementioned at least one engaging claw is disposed on an inner top surface of a main body or a knob of the detent unit, and the spool includes a In the engaging portion, when the knob is located at the first position, at least one engaging claw is coupled to the engaging portion, and when the knob is located at the second position, at least one engaging claw is separated from the engaging portion. In addition, the aforementioned fastening device may further include two protruding arms and two limiting protrusions, the two protruding arms are symmetrically arranged on a main body of the detent unit or an inner top surface of the knob, and the two protruding arms protrude downward respectively, each limiting The position protrusion is located at a distal end of each convex arm, and the spool also includes a middle through hole for the two convex arms and the two limit protrusions to pass through. When the knob is switched between the first position and the second position, The two protruding arms are displaced relative to the middle through hole in the axial direction, and the two limit protrusions are limited by the middle through hole.

Description of drawings

1 is a schematic perspective view of a fastening device according to a first embodiment of the present invention;

FIG. 2 is an exploded schematic view of the fastening device of FIG. 1;

FIG. 3 shows another exploded schematic view of the fastening device of FIG. 1;

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;

6 is an exploded schematic diagram of a fastening device according to a second embodiment of the present invention;

FIG. 7 is another exploded schematic view of the fastening device of FIG. 6;

8 is a schematic cross-sectional view of the fastening device of FIG. 6;

FIG. 9 shows another schematic cross-sectional view of the fastening device of FIG. 6;

10 is an exploded schematic diagram of a fastening device according to a third embodiment of the present invention;

Fig. 11 is another exploded schematic view of the fastening device of Fig. 10;

FIG. 12 is a schematic cross-sectional view of the fastening device of FIG. 10;

FIG. 13 shows another schematic cross-sectional view of the fastening device of FIG. 10;

14 is an exploded schematic diagram of a fastening device according to a fourth embodiment of the present invention;

Fig. 15 is another exploded schematic view of the fastening device of Fig. 14;

FIG. 16 is a schematic cross-sectional view of the fastening device of FIG. 14;

FIG. 17 is another schematic cross-sectional view of the fastening device of FIG. 14;

18 is an exploded schematic diagram of a fastening device according to a fifth embodiment of the present invention;

Fig. 19 shows another exploded schematic view of the fastening device of Fig. 18;

FIG. 20 is a schematic cross-sectional view of the fastening device of FIG. 18;

FIG. 21 shows another schematic cross-sectional view of the fastening device of FIG. 18;

22 is an exploded schematic diagram of a fastening device according to a sixth embodiment of the present invention;

Fig. 23 shows another exploded schematic view of the fastening device of Fig. 22;

FIG. 24 is a schematic cross-sectional view of the fastening device of FIG. 22; and

FIG. 25 is another schematic cross-sectional view of the fastening device of FIG. 22 .

【Symbol Description】

100 Fastening device

200 housing units

210 Chassis

220 Sidewall

221 convex teeth

2211 Lower edge

222 Outer ring concave

230 accommodating space

240 upper opening

250 openings

260 wire holes

300 reels

310 Second drive unit

320 engaging part

330 Sheung Wan

340 Lower ring

400 switch units

410 Subject

420 Combination Arm

430 Ratchet

440 First drive unit

450 Claws

500 knobs

510 card slot

520 inner wall

530 Flange

100a Fastening device

300a reel

350a center through hole

400a Trigger Unit

410a Subject

440a Raised arm

450a Limit convex

500a Knob

100b Fastening device

220b Sidewall

270b Inner Ring Groove

271b Ring Top

300b reel

340b lower ring

350b center through hole

400b Trigger Unit

460b center hole

500b Knob

501b inner top surface

540b Raised Arm

550b limit convex

100c Fastener

220c Sidewall

270c Inner Ring Groove

100d Fastener

220d sidewall

221d convex teeth

223d upper ring groove

300d reel

310d second drive

400d Trigger Unit

430d Ratchet

440d first drive

500d knob

100e Fastener

300e reel

320e engaging part

400e Trigger Unit

500e Knob

560e snap jaws

I1 Axial

R1 first direction

R2 second direction

Detailed ways

Embodiments of the present invention will be described below with reference to the accompanying drawings. For the sake of clarity, many practical details are set forth in the following description. The reader should understand, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the present invention, these practical details are unnecessary. Furthermore, for the purpose of simplifying the drawings, some well-known and conventional structures and elements will be shown in the drawings in a simplified and schematic manner; and repeated elements will possibly be designated by the same or similar numerals.

In addition, when a certain element (or mechanism or module, etc.) is "connected", "arranged" or "coupled" to another element herein, it may mean that the element is directly connected, directly arranged or directly coupled to the other element , can also mean that an element is indirectly connected, indirectly arranged or indirectly coupled to another element, that is, there are other elements interposed between the element and the other element. When it is expressly 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 said element and the other element. The terms first, second, and third are only used to describe different elements or components, and do not limit the elements/components themselves. Therefore, the first element/component may also be renamed as the second element/component. And the combination of elements/components/mechanisms/modules in this article is not a generally well-known, conventional or known combination in this field, and the combination relationship cannot be determined by whether the components/components/mechanisms/modules themselves are known or not. Is it easy to be done easily by a person of ordinary knowledge in the technical field.

Please refer to FIG. 1 , FIG. 2 , FIG. 3 , FIG. 4 and FIG. 5 , wherein, FIG. 1 is a three-dimensional schematic diagram of a fastening device 100 according to a first embodiment of the present invention, and FIG. An exploded schematic view of the fastening device 100 , FIG. 3 is another exploded schematic view of the fastening device 100 of FIG. 1 , and FIG. 4 is a schematic cross-sectional view of the fastening device 100 of FIG. 1 . The fastening device 100 includes a housing unit 200 and a wire reel 300 .

The housing unit 200 includes a side wall 220 , an upper opening 240 and a lower opening 250 . The side wall 220 surrounds and forms an accommodating space 230 , the upper opening 240 communicates with the accommodating space 230 , and the lower opening 250 is opposite to the upper opening 240 and communicates with the accommodating space. space 230 , and the spool 300 is located in the accommodating space 230 . The spool 300 is limited by the side wall 220 , and the side wall 220 prevents the spool 300 from leaving the accommodating space 230 from the upper opening 240 .

In this way, the spool 300 can be allowed to be loaded into the housing unit 200 from bottom to top, and the spool 300 can be prevented from being separated from the housing unit 200 through the upper opening 240 . The structural details of the fastening device 100 will be explained in more detail later.

The side wall 220 may include a plurality of protruding teeth 221 protruding toward the accommodating space 230 , and a lower edge 2211 of the protruding teeth 221 blocks the spool 300 from leaving the accommodating space 230 from the upper opening 240 . Specifically, the side wall 220 includes an inner peripheral surface (not marked), the diameter of the inner peripheral surface is the same, and the protruding teeth 221 are radially protruded from the inner peripheral surface. The diameter of the virtual circle will be smaller than the diameter of the inner peripheral surface.

The bobbin 300 has a hollow annular shape and can include an upper ring portion 330 and a lower ring portion 340. A winding track (not shown) can be formed between the upper ring portion 330 and the lower ring portion 340, and the winding track can be used for a series of The wire (not shown) is wound. In terms of structural configuration, the diameter of the upper ring portion 330 can be made larger than the diameter of the virtual circle formed by the protruding teeth 221 , so that the lower edge 2211 of the protruding teeth 221 can prevent the spool 300 from disengaging from the upper opening 240 .

The housing unit 200 may further include a second wire hole 260 and a chassis 210. The second wire hole 260 is located on the side wall 220 and can be communicated with the accommodating space 230. The tether can enter and exit the accommodating space 230 through the second wire hole 260 to be released or wound around the accommodating space 230. The winding track and the chassis 210 are detachably assembled on the side wall 220 . After the spool 300 is placed into the accommodating space 230 through the lower opening 250 , the chassis 210 can be assembled on the side wall 220 to prevent the spool 300 from being separated from the housing unit 200 .

The fastening device 100 may further include a knob 500 and a detent unit 400 , the knob 500 is covered on the housing unit 200 , the detent unit 400 is located in the accommodating space 230 and above the reel 300 , and the detent unit 400 can be coupled to The knob 500 can also include a first driving part 440 . The spool 300 includes a second driving portion 310 corresponding to the first driving portion 440. The knob 500 drives the detent unit 400 to switch between a first position and a second position along an axis I1. When the knob 500 is at the first position In the position, the first driving part 440 is coupled to the second driving part 310 , and the detent unit 400 corresponds to the protruding teeth 221 and engages with at least one protruding tooth 221 to prevent the spool 300 from rotating in a first direction R1 . Turn the knob 500 toward Contrary to the rotation in a second direction R2 of the first direction R1, the detent unit 400 is separated from the at least one protruding tooth 221 and does not prevent the reel 300 from rotating in the second direction R2; when the knob 500 is in the second position, the detent unit 400 does not prevent the reel 300 from rotating in the first direction R1.

The detent unit 400 may include a main body 410 , three engaging arms 420 and three ratchet arms 430 . The three engaging arms 420 are disposed on the main body 410 at intervals, and the three ratchet arms 430 are also disposed on the main body 410 at intervals. The coupling arm 420 is away from the knob 500 . Each ratchet arm 430 has a flexible arc arm structure protruding toward the first direction R1, and each coupling arm 420 has a flexible arc arm structure protruding toward the second direction R2. The main body 410 of the detent unit 400 may include a notch (not shown) located below, and the first driving portion 440 has a tooth structure and is disposed in the notch. The second driving portion 310 of the spool 300 can be disposed on the top surface of the upper ring portion 330, and has an engaging structure corresponding to the first driving portion 440, so when the detent unit 400 is located above the spool 300, and the knob 500 is located on the first driving portion 440. In one position, the second driving part 310 can protrude into the notch to be coupled to the first driving part 440; on the contrary, when the knob 500 is switched to the second position, the detent unit 400 is displaced upward along the axis I1, so that the first The driving part 440 is separated from the second driving part 310 . In other embodiments, when the knob is located at the second position, the first driving part and the second driving part may not be separated, which is not limited thereto.

The knob 500 may include three engaging slots 510 . The three engaging slots 510 are arranged at intervals on an inner wall 520 of the knob 500 . The shape of each engaging slot 510 corresponds to the shape of each combining arm 420 for engaging the combining arms 420 . The knob 500 is coupled with the detent unit 400 to move together.

The knob 500 may further include three flanges 530 disposed on the inner wall 520 of the knob 500 at intervals, and the position of the three flanges 530 is adjacent to the lower end edge of the inner wall 520, and the side wall 220 may further include an outer annular recess 222. After the side wall 220 , the three flanges 530 are correspondingly limited to the outer ring recess 222 to prevent the knob 500 from being separated from the side wall 220 .

In the first embodiment, the fastening device 100 may further include at least one engaging claw 450 (the number of engaging claw 450 in FIG. 3 is three and is disposed on the main body 410 of the detent unit 400 ) protruding downward, and the wire reel 300 includes an engaging portion 320. When the knob 500 is located at the first position, at least one engaging claw 450 is coupled to the engaging portion 320. When the knob 500 is located at the second position, at least one engaging claw 450 is connected to the engaging portion 320. separation. The engaging portion 320 can be a groove structure, which is disposed on the top surface of the upper ring portion 330 and located below the second driving portion 310 . The three engaging claws 450 surround the notch of the detent unit 400 . It is flexible and radially displaced after being stressed, so when the user pulls the knob 500 upward to switch to the second position, the engaging claw 450 can radially displace and separate from the engaging portion 320 .

Therefore, as shown in FIG. 4 , the knob 500 is located at the first position, and the first driving part 440 of the detent unit 400 is engaged with the second driving part 310 of the spool 300 , so that when the user turns the knob 500 in the second direction R2 During rotation, the ratchet arm 430 is continuously separated from the protruding teeth 221, and the detent unit 400 can drive the spool 300 to tie the tethering line; The spool 300 is restricted by the detent unit 400, and cannot rotate in the first direction R1, so that the tightening effect can be achieved.

As shown in FIG. 5 , when the user wants to release the tether, the knob 500 can be pulled up along the axial direction I1 , and at this time the detent unit 400 is also moved upward along the axial direction I1 to make the first driving part 440 Separated from the second driving part 310, the rotation of the spool 300 is not restricted by the detent unit 400, and the tether can be released.

Please refer to FIG. 6 , FIG. 7 , FIG. 8 and FIG. 9 , wherein, FIG. 6 is an exploded schematic diagram of a fastening device 100 a according to a second embodiment of the present invention, and FIG. 7 is the fastening device of FIG. 6 Another exploded schematic view of 100a is shown. FIG. 8 is a schematic cross-sectional view of the fastening device 100a of FIG. 6 , and FIG. 9 is another schematic cross-sectional view of the fastening device 100a of FIG. 6 . The structure of the fastening device 100a is similar to that of the fastening device 100 of the first embodiment, but the structure of the detent unit 400a is slightly different. The difference between the fastening device 100a and the fastening device 100 will be described below, but the structure is the same or approximations will not be repeated.

The detent unit 400a includes a main body 410a, two protruding arms 440a and two limiting protrusions 450a. The two protruding arms 440a are symmetrically arranged on the main body 410a and protrude downward respectively, and each limiting protrusion 450a is located at a distal end of each protruding arm 440a . The spool 300a may include a middle through hole 350a for passing through the two protruding arms 440a and the two limiting protrusions 450a, wherein when the knob 500a is switched between the first position and the second position, the two protruding arms 440a are along the axial direction I1 Relative to the displacement of the middle through hole 350a, the two limiting protrusions 450a are limited by the middle through hole 350a.

The middle through hole 350a includes a large diameter section (not marked) and a small diameter section (not marked). Since the protruding arm 440a can generate radial displacement after being subjected to force, when the detent unit 400a is placed above the spool 300a, the force can be used Insert the two protruding arms 440a downward, so that the two protruding arms 440a are radially displaced through the small-diameter section, and then enter the large-diameter section for radial reset. In this way, the detent unit 400a can be limited to the spool 300a.

Please refer to FIG. 10 , FIG. 11 , FIG. 12 and FIG. 13 , wherein FIG. 10 shows an exploded schematic view of a fastening device 100 b according to a third embodiment of the present invention, and FIG. 11 shows the fastening device of FIG. 10 Another exploded schematic view of 100b is shown. FIG. 12 is a schematic cross-sectional view of the fastening device 100b of FIG. 10 , and FIG. 13 is another schematic cross-sectional view of the fastening device 100b of FIG. 10 . The structure of the fastening device 100b is similar to that of the fastening device 100a of the second embodiment, but the structures of the knob 500b, the detent unit 400a and the side wall 220b are slightly different. The fastening device 100b and the fastening device 100a will be described below. The differences are not repeated for the same or similar structures.

In the third embodiment, two protruding arms 540b are symmetrically disposed on an inner top surface 501b of the knob 500b, and each limiting protrusion 550b is located at a distal end of each protruding arm 540b. The detent unit 400b may include a central hole 460b. The two protruding arms 540b and the two limiting protrusions 550b pass through the central hole 460b and then enter the central through hole 350b of the spool 300b to limit the knob 500b and the spool 300b.

In addition, the side wall 220b may include an inner ring groove 270b, the inner ring groove 270b includes a ring top surface 271b, the spool 300b includes a lower ring portion 340b, and the lower ring portion 340b is correspondingly accommodated in the inner ring groove 270b, and The ring top surface 271b blocks the spool 300b from escaping from the accommodating space (not shown) from the upper opening (not shown). In terms of structural configuration, the diameters from small to large are the upper ring portion (not shown) of the spool 300b, the inner peripheral surface of the side wall 220b, the lower ring portion 340b of the spool 300b, and the inner ring groove 270b. The spool 300b can enter the accommodating space from bottom to top, and the lower ring portion 340b is correspondingly accommodated in the inner ring groove 270b to limit the spool 300b in the accommodating space. In other embodiments, since the sidewall may include an inner ring groove to limit the spool, the plurality of protruding teeth may face the accommodating space without the lower edge blocking the spool, which is not limited thereto.

Please refer to FIGS. 14 , 15 , 16 and 17 , wherein FIG. 14 shows an exploded schematic view of a fastening device 100 c according to a fourth embodiment of the present invention, and FIG. 15 shows the fastening device of FIG. 14 Another exploded schematic view of 100c is shown. FIG. 16 is a schematic cross-sectional view of the fastening device 100c of FIG. 14 , and FIG. 17 is another schematic cross-sectional view of the fastening device 100c of FIG. 14 . The structure of the fastening device 100c is similar to that of the fastening device 100a of the second embodiment, but the structure of the side wall 220c is slightly different. The structure of the groove 270c is the same as that of the inner ring groove 270b of the third embodiment, so details are not repeated here.

Please refer to FIG. 18 , FIG. 19 , FIG. 20 and FIG. 21 , wherein FIG. 18 shows an exploded schematic view of a fastening device 100 d according to a fifth embodiment of the present invention, and FIG. 19 shows the fastening device of FIG. 18 Another schematic exploded view of 100d is shown in FIG. 20 . FIG. 20 is a schematic cross-sectional view of the fastening device 100d of FIG. 18 , and FIG. 21 is another schematic cross-sectional view of the fastening device 100d of FIG. 18 . The structure of the fastening device 100d is similar to that of the fastening device 100c of the fourth embodiment, and only the details are different.

Specifically, the side wall 220d may further include an upper ring groove 223d located above the protruding teeth 221d. When the knob 500d is in the first position, the ratchet arm 430d of the detent unit 400d corresponds to the protruding teeth 221d, and the first driving part 440d and the second driving part 310d of the spool 300d are coupled to each other; and when the knob 500d is in the second position, The ratchet arm 430d corresponds to the upper ring groove 223d and is completely separated from the protruding teeth 221d, but the first driving part 440d and the second driving part 310d are still coupled to each other.

Please refer to FIG. 22 , FIG. 23 , FIG. 24 and FIG. 25 , wherein FIG. 22 shows an exploded schematic view of a fastening device 100e according to a sixth embodiment of the present invention, and FIG. 23 shows the fastening device of FIG. 22 Another exploded schematic view of 100e is shown. FIG. 24 is a schematic cross-sectional view of the fastening device 100e of FIG. 22 , and FIG. 25 is another schematic cross-sectional view of the fastening device 100e of FIG. 22 . The structure of the fastening device 100e is similar to that of the fastening device 100d of the fifth embodiment, but the structures of the detent unit 400e and the knob 500e are slightly different. The difference between the fastening device 100e and the fastening device 100d will be described below. Where the structures are the same or similar, no further description will be given.

In the sixth embodiment, the fastening device 100e may further include at least one engaging claw 560e (the number of engaging claw 560e in FIG. 23 is three and is disposed on an inner top surface of the knob 500e) protruding downward, and the claw The moving unit 400e does not include an engaging claw, so when the knob 500e is located at the first position, the engaging claw 560e is coupled to the engaging portion 320e of the spool 300e, and when the knob 500e is located at the second position, the engaging claw 560e is engaged with Section 320e is separated.

Therefore, as can be seen from all the above-mentioned embodiments, the two protruding arms of the fastening device can be symmetrically arranged on a main body of the detent unit or an inner top surface of the knob, so that the spool and the detent unit or the spool and the knob are limited in position ; At least one engaging claw can be arranged on the inner top surface of the main body of the detent unit or the knob for selective coupling with the engaging portion of the reel.

Although the present invention has been disclosed by the above embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection shall be subject to the scope defined by the appended claims.

Claims (9)

1. A fastening device, comprising:

a housing unit, comprising: a side wall surrounding to form a containing space, wherein the side wall comprises an inner circumferential surface and a plurality of convex teeth protruding towards the containing space; an upper opening communicated with the accommodating space; the lower opening is opposite to the upper opening and is communicated with the accommodating space; and

a wire coil positioned in the accommodating space;

the diameter of a virtual circle formed by connecting tooth tips of the plurality of convex teeth is smaller than that of the inner circumferential surface, and a lower edge of the plurality of convex teeth prevents the wire coil from separating from the accommodating space from the upper opening.

2. The fastening device according to claim 1, wherein the side wall includes an inner annular groove, the inner annular groove includes an annular top surface, the wire coil includes a lower annular portion correspondingly received in the inner annular groove, and the annular top surface blocks the wire coil from being separated from the receiving space from the upper opening.

3. The fastening device of claim 1, further comprising:

a knob covering the housing unit; and

a brake unit located in the containing space and coupled to the knob, the brake unit including a first driving part;

the wire coil comprises a first driving part, a knob, a plurality of convex teeth and a plurality of braking units, wherein the knob comprises a second driving part corresponding to the first driving part, the knob drives the braking units to be switched between a first position and a second position along an axial direction, when the knob is positioned at the first position, the first driving part is coupled with the second driving part, the braking units correspond to the convex teeth and are clamped with the at least one convex tooth to prevent the wire coil from rotating towards a first direction, the knob rotates towards a second direction opposite to the first direction, the braking units are separated from the at least one convex tooth to prevent the wire coil from rotating towards the second direction, and when the knob is positioned at the second position, the braking units do not prevent the wire coil from rotating towards the first direction.

4. The tightening device according to claim 3, further comprising at least one engaging claw protruding downward, the at least one engaging claw being disposed on an inner top surface of a main body of the click unit or the knob, the wire coil including an engaging portion, the at least one engaging claw being coupled to the engaging portion when the knob is in the first position, and the at least one engaging claw being separated from the engaging portion when the knob is in the second position.

5. The fastening device according to claim 3, further comprising two protruding arms and two limiting protrusions, wherein the two protruding arms are symmetrically disposed on an inner top surface of a main body of the detent unit or the knob, and the two protruding arms protrude downward respectively, each limiting protrusion is located at a distal end of each protruding arm, the wire coil further comprises a middle through hole for the two protruding arms and the two limiting protrusions to penetrate through, wherein when the knob is switched between the first position and the second position, the two protruding arms are displaced relative to the middle through hole along the axial direction, and the two limiting protrusions are limited by the middle through hole.

6. A fastening device, comprising:

a housing unit, comprising: a side wall surrounding to form a containing space, wherein the side wall comprises an inner circumferential surface and a plurality of convex teeth protruding towards the containing space; an upper opening communicated with the accommodating space; the lower opening is opposite to the upper opening and is communicated with the accommodating space;

a wire coil positioned in the accommodating space;

a knob covering the housing unit; and

a brake unit located in the containing space and above the wire coil, the brake unit coupled to the knob;

the diameter of a virtual circle formed by tooth tip connecting lines of the plurality of convex teeth is smaller than that of the inner peripheral surface, a lower edge of the plurality of convex teeth prevents the wire coil from separating from the accommodating space from the upper opening, and when the knob drives the braking unit to switch between a first position and a second position along an axial direction, the relative position of the wire coil and the side wall is fixed.

7. The fastening device according to claim 6, wherein the side wall includes an inner annular groove, the inner annular groove includes an annular top surface, the wire coil includes a lower annular portion correspondingly received in the inner annular groove, and the annular top surface blocks the wire coil from being separated from the receiving space from the upper opening.

8. The fastening device according to claim 6 or 7, further comprising at least one engaging claw protruding downward, the at least one engaging claw being disposed on an inner top surface of a main body of the click unit or the knob, the wire coil comprising an engaging portion, the at least one engaging claw being coupled to the engaging portion when the knob is in the first position, and the at least one engaging claw being separated from the engaging portion when the knob is in the second position.

9. The fastening device according to claim 7, further comprising two protruding arms and two limiting protrusions, the two protruding arms are symmetrically disposed on an inner top surface of a main body of the detent unit or the knob, and the two protruding arms protrude downward respectively, each limiting protrusion is located at a distal end of each protruding arm, the wire coil further comprises a middle through hole for the two protruding arms and the two limiting protrusions to penetrate through, wherein when the knob is switched between the first position and the second position, the two protruding arms move relative to the middle through hole along the axial direction, and the two limiting protrusions are limited by the middle through hole.

Images